Updated meshoptimizer.

3rdparty/meshoptimizer/.clang-format

@@ -1,12 +0,0 @@
-Standard: Cpp03
-UseTab: ForIndentation
-TabWidth: 4
-IndentWidth: 4
-AccessModifierOffset: -4
-BreakBeforeBraces: Allman
-IndentCaseLabels: false
-ColumnLimit: 0
-PointerAlignment: Left
-BreakConstructorInitializersBeforeComma: true
-NamespaceIndentation: None
-AlignEscapedNewlines: DontAlign

3rdparty/meshoptimizer/.github/workflows/build.yml

@@ -1,52 +0,0 @@
-name: build
-
-on: [push, pull_request]
-
-jobs:
-  unix:
-    strategy:
-      matrix:
-        os: [ubuntu, macos]
-    name: ${{matrix.os}}
-    runs-on: ${{matrix.os}}-latest
-    steps:
-    - uses: actions/checkout@v1
-    - name: make test
-      run: |
-        make -j2 config=sanitize test
-        make -j2 config=debug test
-        make -j2 config=release test
-        make -j2 config=release gltfpack
-        strip gltfpack
-    - name: make coverage
-      run: |
-        make -j2 config=coverage test
-        find . -type f -name '*.gcno' -exec gcov -p {} +
-        sed -i -e "s/#####\(.*\)\(\/\/ unreachable.*\)/    -\1\2/" *.gcov
-        bash <(curl -s https://codecov.io/bash) -f 'src#*.gcov' -X search -t ${{secrets.CODECOV_TOKEN}} -B ${{github.ref}}
-    - uses: actions/upload-artifact@v1
-      with:
-        name: gltfpack-${{matrix.os}}
-        path: gltfpack
-
-  windows:
-    runs-on: windows-latest
-    strategy:
-      matrix:
-        arch: [Win32, x64]
-    steps:
-    - uses: actions/checkout@v1
-    - name: cmake configure
-      run: cmake . -DMESHOPT_BUILD_DEMO=ON -DMESHOPT_BUILD_TOOLS=ON -DCMAKE_MSVC_RUNTIME_LIBRARY="MultiThreaded$<$<CONFIG:Debug>:Debug>" -A ${{matrix.arch}}
-    - name: cmake test
-      shell: bash # necessary for fail-fast
-      run: |
-        cmake --build . -- -property:Configuration=Debug -verbosity:minimal
-        Debug/demo.exe demo/pirate.obj
-        cmake --build . -- -property:Configuration=Release -verbosity:minimal
-        Release/demo.exe demo/pirate.obj
-    - uses: actions/upload-artifact@v1
-      with:
-        name: gltfpack-windows
-        path: Release/gltfpack.exe
-      if: matrix.arch == 'x64'

3rdparty/meshoptimizer/.gitignore

@@ -1,2 +0,0 @@
-/build/
-/data/

3rdparty/meshoptimizer/.travis.yml

@@ -1,41 +0,0 @@
-language: cpp
-
-jobs:
-  include:
-  - os: linux
-    compiler: gcc
-  - os: linux
-    compiler: clang
-  - os: linux
-    compiler: gcc
-    arch: arm64
-  - os: osx
-    compiler: clang
-  - os: windows
-    compiler: cl
-    env:
-      - TARGET="Visual Studio 15 2017"
-  - os: windows
-    compiler: cl
-    env:
-      - TARGET="Visual Studio 15 2017 Win64"
-
-script:
-  - if [[ "$TRAVIS_COMPILER" == "gcc" ]]; then make -j2 config=coverage test; fi
-  - if [[ "$TRAVIS_COMPILER" == "clang" ]]; then make -j2 config=sanitize test; fi
-  - if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then make -j2 config=debug test; fi
-  - if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then make -j2 config=release test; fi
-  - if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then make -j2 config=release gltfpack; fi
-  - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then cmake -G "$TARGET" -DMESHOPT_BUILD_DEMO=ON -DMESHOPT_BUILD_TOOLS=ON; fi
-  - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then cmake --build . -- -property:Configuration=Debug -verbosity:minimal; fi
-  - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then ./Debug/demo.exe demo/pirate.obj; fi
-  - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then cmake --build . -- -property:Configuration=Release -verbosity:minimal; fi
-  - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then ./Release/demo.exe demo/pirate.obj; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then make -j2 config=iphone; fi
-
-after_script:
-  - if [[ "$TRAVIS_COMPILER" == "gcc" ]]; then
-    find . -type f -name '*.gcno' -exec gcov -p {} +;
-    sed -i -e "s/#####\(.*\)\(\/\/ unreachable.*\)/    -\1\2/" *.gcov;
-    bash <(curl -s https://codecov.io/bash) -f 'src#*.gcov' -X search;
-    fi

3rdparty/meshoptimizer/CMakeLists.txt

@@ -1,122 +0,0 @@
-cmake_minimum_required(VERSION 3.0)
-
-if (CMAKE_VERSION VERSION_GREATER 3.15 OR CMAKE_VERSION VERSION_EQUAL 3.15)
-    cmake_policy(SET CMP0091 NEW) # Enables use of MSVC_RUNTIME_LIBRARY
-    cmake_policy(SET CMP0092 NEW) # Enables clean /W4 override for MSVC
-endif()
-
-project(meshoptimizer VERSION 0.13 LANGUAGES CXX)
-
-option(MESHOPT_BUILD_DEMO "Build demo" OFF)
-option(MESHOPT_BUILD_TOOLS "Build tools" OFF)
-option(MESHOPT_BUILD_SHARED_LIBS "Build shared libraries" OFF)
-set(MESHOPT_BUILD_TOOLS_GLFW_FOLDER_NAME "" CACHE STRING "Custom folder to look for GLFW")
-
-set(SOURCES
-    src/meshoptimizer.h
-    src/allocator.cpp
-    src/clusterizer.cpp
-    src/indexcodec.cpp
-    src/indexgenerator.cpp
-    src/overdrawanalyzer.cpp
-    src/overdrawoptimizer.cpp
-    src/simplifier.cpp
-    src/spatialorder.cpp
-    src/stripifier.cpp
-    src/vcacheanalyzer.cpp
-    src/vcacheoptimizer.cpp
-    src/vertexcodec.cpp
-    src/vfetchanalyzer.cpp
-    src/vfetchoptimizer.cpp
-)
-
-if(MSVC)
-    add_compile_options(/W4 /WX)
-else()
-    add_compile_options(-Wall -Wextra -Wshadow -Wno-missing-field-initializers -Werror)
-endif()
-
-add_library(meshoptimizer ${SOURCES})
-target_include_directories(meshoptimizer INTERFACE "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>")
-
-if(MESHOPT_BUILD_SHARED_LIBS)
-    set_target_properties(meshoptimizer PROPERTIES CXX_VISIBILITY_PRESET hidden)
-    set_target_properties(meshoptimizer PROPERTIES VISIBILITY_INLINES_HIDDEN ON)
-
-    if(WIN32)
-        target_compile_definitions(meshoptimizer INTERFACE "MESHOPTIMIZER_API=__declspec(dllimport)")
-        target_compile_definitions(meshoptimizer PRIVATE "MESHOPTIMIZER_API=__declspec(dllexport)")
-    else()
-        target_compile_definitions(meshoptimizer PUBLIC "MESHOPTIMIZER_API=__attribute__((visibility(\"default\")))")
-    endif()
-endif()
-
-set(TARGETS meshoptimizer)
-
-if(MESHOPT_BUILD_DEMO)
-    add_executable(demo demo/main.cpp demo/miniz.cpp demo/tests.cpp tools/meshloader.cpp)
-    target_link_libraries(demo meshoptimizer)
-endif()
-
-if(MESHOPT_BUILD_TOOLS)
-    add_executable(gltfpack tools/gltfpack.cpp tools/meshloader.cpp tools/basistoktx.cpp)
-    target_link_libraries(gltfpack meshoptimizer)
-    list(APPEND TARGETS gltfpack)
-
-    if(MESHOPT_BUILD_SHARED_LIBS)
-        string(CONCAT RPATH "$ORIGIN/../" ${CMAKE_INSTALL_LIBDIR})
-        set_target_properties(gltfpack PROPERTIES INSTALL_RPATH ${RPATH})
-    endif()
-
-    if(NOT (MESHOPT_BUILD_TOOLS_GLFW_FOLDER_NAME STREQUAL ""))
-        message(STATUS "Using GLFW3 from: ${MESHOPT_BUILD_TOOLS_GLFW_FOLDER_NAME}")
-        set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "")
-        set(GLFW_BUILD_TESTS OFF CACHE BOOL "")
-        set(GLFW_BUILD_DOCS OFF CACHE BOOL "")
-        set(GLFW_INSTALL OFF CACHE BOOL "")
-        add_subdirectory(${MESHOPT_BUILD_TOOLS_GLFW_FOLDER_NAME})
-        set(glfw3_FOUND TRUE)
-        set(glfw3_LIBRARY glfw)
-    else()
-        find_package(glfw3 3.3 QUIET)
-    endif()
-
-    if (glfw3_FOUND)
-        add_executable(lodviewer tools/lodviewer.cpp tools/meshloader.cpp)
-        target_link_libraries(lodviewer ${glfw3_LIBRARY} meshoptimizer)
-    endif()
-endif()
-
-include(GNUInstallDirs)
-
-install(TARGETS ${TARGETS} EXPORT meshoptimizerTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
-
-install(FILES src/meshoptimizer.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
-install(EXPORT meshoptimizerTargets DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/meshoptimizer NAMESPACE meshoptimizer::)
-
-# TARGET_PDB_FILE is available since 3.1
-if(MSVC AND NOT (CMAKE_VERSION VERSION_LESS "3.1"))
-    foreach(TARGET ${TARGETS})
-        get_target_property(TARGET_TYPE ${TARGET} TYPE)
-        if(NOT ${TARGET_TYPE} STREQUAL "STATIC_LIBRARY")
-            install(FILES $<TARGET_PDB_FILE:${TARGET}> DESTINATION ${CMAKE_INSTALL_BINDIR} OPTIONAL)
-        endif()
-    endforeach(TARGET)
-endif()
-
-include(CMakePackageConfigHelpers)
-
-configure_package_config_file(config.cmake.in
-    ${CMAKE_CURRENT_BINARY_DIR}/meshoptimizerConfig.cmake
-    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/meshoptimizer NO_SET_AND_CHECK_MACRO)
-
-write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/meshoptimizerConfigVersion.cmake COMPATIBILITY ExactVersion)
-
-install(FILES
-    ${CMAKE_CURRENT_BINARY_DIR}/meshoptimizerConfig.cmake
-    ${CMAKE_CURRENT_BINARY_DIR}/meshoptimizerConfigVersion.cmake
-    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/meshoptimizer)

3rdparty/meshoptimizer/CONTRIBUTING.md

@@ -1,54 +0,0 @@
-Thanks for deciding to contribute to meshoptimizer! These guidelines will try to help make the process painless and efficient.
-
-## Questions
-
-If you have a question regarding the library usage, please [open a GitHub issue](https://github.com/zeux/meshoptimizer/issues/new).
-Some questions just need answers, but it's nice to keep them for future reference in case other people want to know the same thing.
-Some questions help improve the library interface or documentation by inspiring future changes.
-
-## Bugs
-
-If the library doesn't compile on your system, compiles with warnings, doesn't seem to run correctly for your input data or if anything else is amiss, please [open a GitHub issue](https://github.com/zeux/meshoptimizer/issues/new).
-It helps if you note the version of the library this issue happens in, the version of your compiler for compilation issues, and a reproduction case for runtime bugs.
-
-Of course, feel free to [create a pull request](https://help.github.com/articles/about-pull-requests/) to fix the bug yourself.
-
-## Features
-
-New algorithms and improvements to existing algorithms are always welcome; you can open an issue or make the change yourself and submit a pull request.
-
-For major features, consider opening an issue describing an improvement you'd like to see or make before opening a pull request.
-This will give us a chance to discuss the idea before implementing it - some algorithms may not be easy to integrate into existing programs, may not be robust to arbitrary meshes or may be expensive to run or implement/maintain, so a discussion helps make sure these don't block the algorithm development.
-
-## Code style
-
-Contributions to this project are expected to follow the existing code style.
-`.clang-format` file mostly defines syntactic styling rules (you can run `make format` to format the code accordingly).
-
-As for naming conventions, this library uses `snake_case` for variables, `lowerCamelCase` for functions, `UpperCamelCase` for types, `kCamelCase` for global constants and `SCARY_CASE` for macros. All public functions/types must additionally have an extra `meshopt_` prefix to avoid symbol conflicts.
-
-## Dependencies
-
-Please note that this library uses C89 interface for all APIs and a C++98 implementation - C++11 features can not be used.
-This choice is made to maximize compatibility to make sure that any toolchain, including legacy proprietary gaming console toolchains, can compile this code.
-
-Additionally, the library code has zero external dependencies, does not depend on STL and does not use RTTI or exceptions.
-This, again, maximizes compatibility and makes sure the library can be used in environments where STL use is discouraged or prohibited, as well as maximizing runtime performance and minimizing compilation times.
-
-The demo program uses STL since it serves as an example of usage and as a test harness, not as production-ready code.
-
-## Testing
-
-All pull requests will run through a continuous integration pipeline hosted on [Travis CI](https://travis-ci.org/zeux/meshoptimizer) that will run the built-in unit tests and integration tests on Windows, macOS and Linux with gcc, clang and msvc compilers.
-You can run the tests yourself using `make test` or building the demo program with `cmake -DBUILD_DEMO=ON` and running it.
-
-Unit tests can be found in `demo/tests.cpp` and functional tests - in `demo/main.cpp`; when making code changes please try to make sure they are covered by an existing test or add a new test accordingly.
-
-## Documentation
-
-Documentation for this library resides in the `meshoptimizer.h` header, with examples as part of a usage manual available in `README.md`.
-Changes to documentation are always welcome and should use issues/pull requests as outlined above; please note that `README.md` only contains documentation for stable algorithms, as experimental algorithms may change the interface without concern for backwards compatibility.
-
-## Sensitive communication
-
-If you prefer to not disclose the issues or information relevant to the issue such as reproduction case to the public, you can always contact the author via e-mail ([email protected]).

3rdparty/meshoptimizer/Makefile

@@ -1,108 +0,0 @@
-.SUFFIXES:
-MAKEFLAGS+=-r
-
-config=debug
-files=demo/pirate.obj
-
-BUILD=build/$(config)
-
-LIBRARY_SOURCES=$(wildcard src/*.cpp)
-LIBRARY_OBJECTS=$(LIBRARY_SOURCES:%=$(BUILD)/%.o)
-
-DEMO_SOURCES=$(wildcard demo/*.c demo/*.cpp) tools/meshloader.cpp
-DEMO_OBJECTS=$(DEMO_SOURCES:%=$(BUILD)/%.o)
-
-GLTFPACK_SOURCES=tools/gltfpack.cpp tools/meshloader.cpp tools/basistoktx.cpp
-GLTFPACK_OBJECTS=$(GLTFPACK_SOURCES:%=$(BUILD)/%.o)
-
-OBJECTS=$(LIBRARY_OBJECTS) $(DEMO_OBJECTS) $(GLTFPACK_OBJECTS)
-
-LIBRARY=$(BUILD)/libmeshoptimizer.a
-EXECUTABLE=$(BUILD)/meshoptimizer
-
-CFLAGS=-g -Wall -Wextra -Werror -std=c89
-CXXFLAGS=-g -Wall -Wextra -Wshadow -Wno-missing-field-initializers -Werror -std=c++98
-LDFLAGS=
-
-WASM_SOURCES=src/vertexcodec.cpp src/indexcodec.cpp
-WASM_EXPORTS=["_meshopt_decodeVertexBuffer","_meshopt_decodeIndexBuffer","_sbrk","__start"]
-WASM_FLAGS=-O3 -DNDEBUG -s EXPORTED_FUNCTIONS='$(WASM_EXPORTS)' -s ALLOW_MEMORY_GROWTH=1 -s TOTAL_STACK=24576 -s TOTAL_MEMORY=65536
-
-ifeq ($(config),iphone)
-	IPHONESDK=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk
-	CFLAGS+=-arch armv7 -arch arm64 -isysroot $(IPHONESDK)
-	CXXFLAGS+=-arch armv7 -arch arm64 -isysroot $(IPHONESDK) -stdlib=libc++
-	LDFLAGS+=-arch armv7 -arch arm64 -isysroot $(IPHONESDK) -L $(IPHONESDK)/usr/lib -mios-version-min=7.0
-endif
-
-ifeq ($(config),trace)
-	CXXFLAGS+=-DTRACE=2
-endif
-
-ifeq ($(config),release)
-	CXXFLAGS+=-O3 -DNDEBUG
-endif
-
-ifeq ($(config),coverage)
-	CXXFLAGS+=-coverage
-	LDFLAGS+=-coverage
-endif
-
-ifeq ($(config),sanitize)
-	CXXFLAGS+=-fsanitize=address,undefined -fno-sanitize-recover=all
-	LDFLAGS+=-fsanitize=address,undefined
-endif
-
-ifeq ($(config),analyze)
-	CXXFLAGS+=--analyze
-endif
-
-all: $(EXECUTABLE)
-
-test: $(EXECUTABLE)
-	$(EXECUTABLE) $(files)
-
-check: $(EXECUTABLE)
-	$(EXECUTABLE)
-
-dev: $(EXECUTABLE)
-	$(EXECUTABLE) -d $(files)
-
-format:
-	clang-format -i $(LIBRARY_SOURCES) $(DEMO_SOURCES) $(GLTFPACK_SOURCES)
-
-gltfpack: $(GLTFPACK_OBJECTS) $(LIBRARY)
-	$(CXX) $^ $(LDFLAGS) -o $@
-
-build/decoder_base.wasm: $(WASM_SOURCES)
-	@mkdir -p build
-	emcc $^ $(WASM_FLAGS) -o $@
-
-build/decoder_simd.wasm: $(WASM_SOURCES)
-	@mkdir -p build
-	emcc $^ $(WASM_FLAGS) -o $@ -munimplemented-simd128 -mbulk-memory
-
-js/meshopt_decoder.js: build/decoder_base.wasm build/decoder_simd.wasm
-	sed -i "s#\(var wasm_base = \)\".*\";#\\1\"$$(cat build/decoder_base.wasm | hexdump -v -e '1/1 "%02X"')\";#" $@
-	sed -i "s#\(var wasm_simd = \)\".*\";#\\1\"$$(cat build/decoder_simd.wasm | hexdump -v -e '1/1 "%02X"')\";#" $@
-
-$(EXECUTABLE): $(DEMO_OBJECTS) $(LIBRARY)
-	$(CXX) $^ $(LDFLAGS) -o $@
-
-$(LIBRARY): $(LIBRARY_OBJECTS)
-	ar rcs $@ $^
-
-$(BUILD)/%.cpp.o: %.cpp
-	@mkdir -p $(dir $@)
-	$(CXX) $< $(CXXFLAGS) -c -MMD -MP -o $@
-
-$(BUILD)/%.c.o: %.c
-	@mkdir -p $(dir $@)
-	$(CC) $< $(CFLAGS) -c -MMD -MP -o $@
-
--include $(OBJECTS:.o=.d)
-
-clean:
-	rm -rf $(BUILD)
-
-.PHONY: all clean format

3rdparty/meshoptimizer/README.md

@@ -1,315 +0,0 @@
-# 🐇 meshoptimizer [![Actions Status](https://github.com/zeux/meshoptimizer/workflows/build/badge.svg)](https://github.com/zeux/meshoptimizer/actions) [![Build Status](https://travis-ci.org/zeux/meshoptimizer.svg?branch=master)](https://travis-ci.org/zeux/meshoptimizer) [![codecov.io](https://codecov.io/github/zeux/meshoptimizer/coverage.svg?branch=master)](https://codecov.io/github/zeux/meshoptimizer?branch=master) ![MIT](https://img.shields.io/badge/license-MIT-blue.svg) [![GitHub](https://img.shields.io/badge/repo-github-green.svg)](https://github.com/zeux/meshoptimizer)
-
-## Purpose
-
-When a GPU renders triangle meshes, various stages of the GPU pipeline have to process vertex and index data. The efficiency of these stages depends on the data you feed to them; this library provides algorithms to help optimize meshes for these stages, as well as algorithms to reduce the mesh complexity and storage overhead.
-
-The library provides a C and C++ interface for all algorithms; you can use it from C/C++ or from other languages via FFI (such as P/Invoke). If you want to use this library from Rust, you should use [meshopt crate](https://crates.io/crates/meshopt).
-
-[gltfpack](#gltfpack), which is a tool that can automatically optimize glTF files, is developed and distributed alongside the library.
-
-## Installing
-
-meshoptimizer is hosted on GitHub; you can download the latest release using git:
-
-```
-git clone -b v0.13 https://github.com/zeux/meshoptimizer.git
-```
-
-Alternatively you can [download the .zip archive from GitHub](https://github.com/zeux/meshoptimizer/archive/v0.13.zip).
-
-## Building
-
-meshoptimizer is distributed as a set of C++ source files. To include it into your project, you can use one of the two options:
-
-* Use CMake to build the library (either as a standalone project or as part of your project)
-* Add source files to your project's build system
-
-The source files are organized in such a way that you don't need to change your build-system settings, and you only need to add the files for the algorithms you use.
-
-## Pipeline
-
-When optimizing a mesh, you should typically feed it through a set of optimizations (the order is important!):
-
-1. Indexing
-2. Vertex cache optimization
-3. Overdraw optimization
-4. Vertex fetch optimization
-5. Vertex quantization
-6. (optional) Vertex/index buffer compression
-
-## Indexing
-
-Most algorithms in this library assume that a mesh has a vertex buffer and an index buffer. For algorithms to work well and also for GPU to render your mesh efficiently, the vertex buffer has to have no redundant vertices; you can generate an index buffer from an unindexed vertex buffer or reindex an existing (potentially redundant) index buffer as follows:
-
-First, generate a remap table from your existing vertex (and, optionally, index) data:
-
-```c++
-size_t index_count = face_count * 3;
-std::vector<unsigned int> remap(index_count); // allocate temporary memory for the remap table
-size_t vertex_count = meshopt_generateVertexRemap(&remap[0], NULL, index_count, &unindexed_vertices[0], index_count, sizeof(Vertex));
-```
-
-Note that in this case we only have an unindexed vertex buffer; the remap table is generated based on binary equivalence of the input vertices, so the resulting mesh will render the same way.
-
-After generating the remap table, you can allocate space for the target vertex buffer (`vertex_count` elements) and index buffer (`index_count` elements) and generate them:
-
-```c++
-meshopt_remapIndexBuffer(indices, NULL, index_count, &remap[0]);
-meshopt_remapVertexBuffer(vertices, &unindexed_vertices[0], index_count, sizeof(Vertex), &remap[0]);
-```
-
-You can then further optimize the resulting buffers by calling the other functions on them in-place.
-
-## Vertex cache optimization
-
-When the GPU renders the mesh, it has to run the vertex shader for each vertex; usually GPUs have a built-in fixed size cache that stores the transformed vertices (the result of running the vertex shader), and uses this cache to reduce the number of vertex shader invocations. This cache is usually small, 16-32 vertices, and can have different replacement policies; to use this cache efficiently, you have to reorder your triangles to maximize the locality of reused vertex references like so:
-
-```c++
-meshopt_optimizeVertexCache(indices, indices, index_count, vertex_count);
-```
-
-## Overdraw optimization
-
-After transforming the vertices, GPU sends the triangles for rasterization which results in generating pixels that are usually first ran through the depth test, and pixels that pass it get the pixel shader executed to generate the final color. As pixel shaders get more expensive, it becomes more and more important to reduce overdraw. While in general improving overdraw requires view-dependent operations, this library provides an algorithm to reorder triangles to minimize the overdraw from all directions, which you should run after vertex cache optimization like this:
-
-```c++
-meshopt_optimizeOverdraw(indices, indices, index_count, &vertices[0].x, vertex_count, sizeof(Vertex), 1.05f);
-```
-
-The overdraw optimizer needs to read vertex positions as a float3 from the vertex; the code snippet above assumes that the vertex stores position as `float x, y, z`.
-
-When performing the overdraw optimization you have to specify a floating-point threshold parameter. The algorithm tries to maintain a balance between vertex cache efficiency and overdraw; the threshold determines how much the algorithm can compromise the vertex cache hit ratio, with 1.05 meaning that the resulting ratio should be at most 5% worse than before the optimization.
-
-## Vertex fetch optimization
-
-After the final triangle order has been established, we still can optimize the vertex buffer for memory efficiency. Before running the vertex shader GPU has to fetch the vertex attributes from the vertex buffer; the fetch is usually backed by a memory cache, and as such optimizing the data for the locality of memory access is important. You can do this by running this code:
-
-To optimize the index/vertex buffers for vertex fetch efficiency, call:
-
-```c++
-meshopt_optimizeVertexFetch(vertices, indices, index_count, vertices, vertex_count, sizeof(Vertex));
-```
-
-This will reorder the vertices in the vertex buffer to try to improve the locality of reference, and rewrite the indices in place to match; if the vertex data is stored using multiple streams, you should use `meshopt_optimizeVertexFetchRemap` instead. This optimization has to be performed on the final index buffer since the optimal vertex order depends on the triangle order.
-
-Note that the algorithm does not try to model cache replacement precisely and instead just orders vertices in the order of use, which generally produces results that are close to optimal.
-
-## Vertex quantization
-
-To optimize memory bandwidth when fetching the vertex data even further, and to reduce the amount of memory required to store the mesh, it is often beneficial to quantize the vertex attributes to smaller types. While this optimization can technically run at any part of the pipeline (and sometimes doing quantization as the first step can improve indexing by merging almost identical vertices), it generally is easier to run this after all other optimizations since some of them require access to float3 positions.
-
-Quantization is usually domain specific; it's common to quantize normals using 3 8-bit integers but you can use higher-precision quantization (for example using 10 bits per component in a 10_10_10_2 format), or a different encoding to use just 2 components. For positions and texture coordinate data the two most common storage formats are half precision floats, and 16-bit normalized integers that encode the position relative to the AABB of the mesh or the UV bounding rectangle.
-
-The number of possible combinations here is very large but this library does provide the building blocks, specifically functions to quantize floating point values to normalized integers, as well as half-precision floats. For example, here's how you can quantize a normal:
-
-```c++
-unsigned int normal =
-	(meshopt_quantizeUnorm(v.nx, 10) << 20) |
-	(meshopt_quantizeUnorm(v.ny, 10) << 10) |
-	 meshopt_quantizeUnorm(v.nz, 10);
-```
-
-and here's how you can quantize a position:
-
-```c++
-unsigned short px = meshopt_quantizeHalf(v.x);
-unsigned short py = meshopt_quantizeHalf(v.y);
-unsigned short pz = meshopt_quantizeHalf(v.z);
-```
-
-## Vertex/index buffer compression
-
-In case storage size or transmission bandwidth is of importance, you might want to additionally compress vertex and index data. While several mesh compression libraries, like Google Draco, are available, they typically are designed to maximize the compression ratio at the cost of disturbing the vertex/index order (which makes the meshes inefficient to render on GPU) or decompression performance. They also frequently don't support custom game-ready quantized vertex formats and thus require to re-quantize the data after loading it, introducing extra quantization errors and making decoding slower.
-
-Alternatively you can use general purpose compression libraries like zstd or Oodle to compress vertex/index data - however these compressors aren't designed to exploit redundancies in vertex/index data and as such compression rates can be unsatisfactory.
-
-To that end, this library provides algorithms to "encode" vertex and index data. The result of the encoding is generally significantly smaller than initial data, and remains compressible with general purpose compressors - so you can either store encoded data directly (for modest compression ratios and maximum decoding performance), or further compress it with zstd/Oodle to maximize compression ratio.
-
-To encode, you need to allocate target buffers (preferably using the worst case bound) and call encoding functions:
-
-```c++
-std::vector<unsigned char> vbuf(meshopt_encodeVertexBufferBound(vertex_count, sizeof(Vertex)));
-vbuf.resize(meshopt_encodeVertexBuffer(&vbuf[0], vbuf.size(), vertices, vertex_count, sizeof(Vertex)));
-
-std::vector<unsigned char> ibuf(meshopt_encodeIndexBufferBound(index_count, vertex_count));
-ibuf.resize(meshopt_encodeIndexBuffer(&ibuf[0], ibuf.size(), indices, index_count));
-```
-
-You can then either serialize `vbuf`/`ibuf` as is, or compress them further. To decode the data at runtime, call decoding functions:
-
-```c++
-int resvb = meshopt_decodeVertexBuffer(vertices, vertex_count, sizeof(Vertex), &vbuf[0], vbuf.size());
-int resib = meshopt_decodeIndexBuffer(indices, index_count, &buffer[0], buffer.size());
-assert(resvb == 0 && resib == 0);
-```
-
-Note that vertex encoding assumes that vertex buffer was optimized for vertex fetch, and that vertices are quantized; index encoding assumes that the vertex/index buffers were optimized for vertex cache and vertex fetch. Feeding unoptimized data into the encoders will produce poor compression ratios. Both codecs are lossless - the only lossy step is quantization that happens before encoding.
-
-Decoding functions are heavily optimized and can directly target write-combined memory; you can expect both decoders to run at 1-3 GB/s on modern desktop CPUs. Compression ratios depend on the data; vertex data compression ratio is typically around 2-4x (compared to already quantized data), index data compression ratio is around 5-6x (compared to raw 16-bit index data). General purpose lossless compressors can further improve on these results.
-
-Due to a very high decoding performance and compatibility with general purpose lossless compressors, the compression is a good fit for the use on the web. To that end, meshoptimizer provides both vertex and index decoders compiled into WebAssembly and wrapped into a module with JavaScript-friendly interface, `js/meshopt_decoder.js`, that you can use to decode meshes that were encoded offline:
-
-```js
-// ready is a Promise that is resolved when (asynchronous) WebAssembly compilation finishes
-await MeshoptDecoder.ready;
-
-// decode from *Data (Uint8Array) into *Buffer (Uint8Array)
-MeshoptDecoder.decodeVertexBuffer(vertexBuffer, vertexCount, vertexSize, vertexData);
-MeshoptDecoder.decodeIndexBuffer(indexBuffer, indexCount, indexSize, indexData);
-```
-
-[Usage example](https://meshoptimizer.org/demo/) is available, with source in `demo/index.html`; this example uses .GLB files encoded using `gltfpack`.
-
-## Triangle strip conversion
-
-On most hardware, indexed triangle lists are the most efficient way to drive the GPU. However, in some cases triangle strips might prove beneficial:
-
-- On some older GPUs, triangle strips may be a bit more efficient to render
-- On extremely memory constrained systems, index buffers for triangle strips could save a bit of memory
-
-This library provides an algorithm for converting a vertex cache optimized triangle list to a triangle strip:
-
-```c++
-std::vector<unsigned int> strip(meshopt_stripifyBound(index_count));
-unsigned int restart_index = ~0u;
-size_t strip_size = meshopt_stripify(&strip[0], indices, index_count, vertex_count, restart_index);
-```
-
-Typically you should expect triangle strips to have ~50-60% of indices compared to triangle lists (~1.5-1.8 indices per triangle) and have ~5% worse ACMR.
-Note that triangle strips can be stitched with or without restart index support. Using restart indices can result in ~10% smaller index buffers, but on some GPUs restart indices may result in decreased performance.
-
-## Deinterleaved geometry
-
-All of the examples above assume that geometry is represented as a single vertex buffer and a single index buffer. This requires storing all vertex attributes - position, normal, texture coordinate, skinning weights etc. - in a single contiguous struct. However, in some cases using multiple vertex streams may be preferable. In particular, if some passes require only positional data - such as depth pre-pass or shadow map - then it may be beneficial to split it from the rest of the vertex attributes to make sure the bandwidth use during these passes is optimal. On some mobile GPUs a position-only attribute stream also improves efficiency of tiling algorithms.
-
-Most of the functions in this library either only need the index buffer (such as vertex cache optimization) or only need positional information (such as overdraw optimization). However, several tasks require knowledge about all vertex attributes.
-
-For indexing, `meshopt_generateVertexRemap` assumes that there's just one vertex stream; when multiple vertex streams are used, it's necessary to use `meshopt_generateVertexRemapMulti` as follows:
-
-```c++
-meshopt_Stream streams[] = {
-    {&unindexed_pos[0], sizeof(float) * 3, sizeof(float) * 3},
-    {&unindexed_nrm[0], sizeof(float) * 3, sizeof(float) * 3},
-    {&unindexed_uv[0], sizeof(float) * 2, sizeof(float) * 2},
-};
-
-std::vector<unsigned int> remap(index_count);
-size_t vertex_count = meshopt_generateVertexRemapMulti(&remap[0], NULL, index_count, index_count, streams, sizeof(streams) / sizeof(streams[0]));
-```
-
-After this `meshopt_remapVertexBuffer` needs to be called once for each vertex stream to produce the correctly reindexed stream.
-
-Instead of calling `meshopt_optimizeVertexFetch` for reordering vertices in a single vertex buffer for efficiency, calling `meshopt_optimizeVertexFetchRemap` and then calling `meshopt_remapVertexBuffer` for each stream again is recommended.
-
-Finally, when compressing vertex data, `meshopt_encodeVertexBuffer` should be used on each vertex stream separately - this allows the encoder to best utilize corellation between attribute values for different vertices.
-
-## Simplification
-
-All algorithms presented so far don't affect visual appearance at all, with the exception of quantization that has minimal controlled impact. However, fundamentally the most effective way at reducing the rendering or transmission cost of a mesh is to make the mesh simpler.
-
-This library provides two simplification algorithms that reduce the number of triangles in the mesh. Given a vertex and an index buffer, they generate a second index buffer that uses existing vertices in the vertex buffer. This index buffer can be used directly for rendering with the original vertex buffer (preferably after vertex cache optimization), or a new compact vertex/index buffer can be generated using `meshopt_optimizeVertexFetch` that uses the optimal number and order of vertices.
-
-The first simplification algorithm, `meshopt_simplify`, follows the topology of the original mesh in an attempt to preserve attribute seams, borders and overall appearance. For meshes with inconsistent topology or many seams, such as faceted meshes, it can result in simplifier getting "stuck" and not being able to simplify the mesh fully; it's recommended to preprocess the index buffer with `meshopt_generateShadowIndexBuffer` to discard any vertex attributes that aren't critical and can be rebuilt later such as normals.
-
-```c++
-float threshold = 0.2f;
-size_t target_index_count = size_t(index_count * threshold);
-float target_error = 1e-2f;
-
-std::vector<unsigned int> lod(index_count);
-lod.resize(meshopt_simplify(&lod[0], indices, index_count, &vertices[0].x, vertex_count, sizeof(Vertex), target_index_count, target_error));
-```
-
-Target error is an approximate measure of the deviation from the original mesh using distance normalized to 0..1 (so 1e-2f means that simplifier will try to maintain the error to be below 1% of the mesh extents). Note that because of topological restrictions and error bounds simplifier isn't guaranteed to reach the target index count and can stop earlier.
-
-The second simplification algorithm, `meshopt_simplifySloppy`, doesn't follow the topology of the original mesh. This means that it doesn't preserve attribute seams or borders, but it can collapse internal details that are too small to matter better because it can merge mesh features that are topologically disjoint but spatially close.
-
-```c++
-float threshold = 0.2f;
-size_t target_index_count = size_t(index_count * threshold);
-
-std::vector<unsigned int> lod(target_index_count);
-lod.resize(meshopt_simplifySloppy(&lod[0], indices, index_count, &vertices[0].x, vertex_count, sizeof(Vertex), target_index_count));
-```
-
-This algorithm is guaranteed to return a result at or below the target index count. It is 5-6x faster than `meshopt_simplify` when simplification ratio is large, and is able to reach ~20M triangles/sec on a desktop CPU (`meshopt_simplify` works at ~3M triangles/sec).
-
-When a sequence of LOD meshes is generated that all use the original vertex buffer, care must be taken to order vertices optimally to not penalize mobile GPU architectures that are only capable of transforming a sequential vertex buffer range. It's recommended in this case to first optimize each LOD for vertex cache, then assemble all LODs in one large index buffer starting from the coarsest LOD (the one with fewest triangles), and call `meshopt_optimizeVertexFetch` on the final large index buffer. This will make sure that coarser LODs require a smaller vertex range and are efficient wrt vertex fetch and transform.
-
-## Efficiency analyzers
-
-While the only way to get precise performance data is to measure performance on the target GPU, it can be valuable to measure the impact of these optimization in a GPU-independent manner. To this end, the library provides analyzers for all three major optimization routines. For each optimization there is a corresponding analyze function, like `meshopt_analyzeOverdraw`, that returns a struct with statistics.
-
-`meshopt_analyzeVertexCache` returns vertex cache statistics. The common metric to use is ACMR - average cache miss ratio, which is the ratio of the total number of vertex invocations to the triangle count. The worst-case ACMR is 3 (GPU has to process 3 vertices for each triangle); on regular grids the optimal ACMR approaches 0.5. On real meshes it usually is in [0.5..1.5] range depending on the amount of vertex splits. One other useful metric is ATVR - average transformed vertex ratio - which represents the ratio of vertex shader invocations to the total vertices, and has the best case of 1.0 regardless of mesh topology (each vertex is transformed once).
-
-`meshopt_analyzeVertexFetch` returns vertex fetch statistics. The main metric it uses is overfetch - the ratio between the number of bytes read from the vertex buffer to the total number of bytes in the vertex buffer. Assuming non-redundant vertex buffers, the best case is 1.0 - each byte is fetched once.
-
-`meshopt_analyzeOverdraw` returns overdraw statistics. The main metric it uses is overdraw - the ratio between the number of pixel shader invocations to the total number of covered pixels, as measured from several different orthographic cameras. The best case for overdraw is 1.0 - each pixel is shaded once.
-
-Note that all analyzers use approximate models for the relevant GPU units, so the numbers you will get as the result are only a rough approximation of the actual performance.
-
-## Memory management
-
-Many algorithms allocate temporary memory to store intermediate results or accelerate processing. The amount of memory allocated is a function of various input parameters such as vertex count and index count. By default memory is allocated using `operator new` and `operator delete`; if these operators are overloaded by the application, the overloads will be used instead. Alternatively it's possible to specify custom allocation/deallocation functions using `meshopt_setAllocator`, e.g.
-
-```c++
-meshopt_setAllocator(malloc, free);
-```
-
-> Note that the library expects the allocation function to either throw in case of out-of-memory (in which case the exception will propagate to the caller) or abort, so technically the use of `malloc` above isn't safe. If you want to handle out-of-memory errors without using C++ exceptions, you can use `setjmp`/`longjmp` instead.
-
-Vertex and index decoders (`meshopt_decodeVertexBuffer` and `meshopt_decodeIndexBuffer`) do not allocate memory and work completely within the buffer space provided via arguments.
-
-All functions have bounded stack usage that does not exceed 32 KB for any algorithms.
-
-## gltfpack
-
-meshoptimizer provides many algorithms that can be integrated into a content pipeline or a rendering engine to improve performance. Often integration requires some conscious choices for optimal results - should we optimize for overdraw or not? what should the vertex format be? do we use triangle lists or strips? However, in some cases optimality is not a requirement.
-
-For engines that want a relatively simple way to load meshes, and would like the meshes to perform reasonably well on target hardware and be reasonably fast to load, meshoptimizer provides a command-line tool, `gltfpack`. `gltfpack` can take an `.obj` or `.gltf` file as an input, and produce a `.gltf` or `.glb` file that is optimized for rendering performance and download size.
-
-To build gltfpack on Linux/macOS, you can use make:
-
-```
-make config=release gltfpack
-```
-
-On Windows (and other platforms), you can use CMake:
-
-```
-cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_TOOLS=ON
-cmake --build . --config Release --target gltfpack
-```
-
-You can then run the resulting command-line binary like this (run it without arguments for a list of options):
-
-```
-gltfpack -i scene.gltf -o scene.glb
-```
-
-gltfpack substantially changes the glTF data by optimizing the meshes for vertex fetch and transform cache, quantizing the geometry to reduce the memory consumption and size, merging meshes to reduce the draw call count, quantizing and resampling animations to reduce animation size and simplify playback, and pruning the node tree by removing or collapsing redundant nodes. It will also simplify the meshes when requested to do so.
-
-gltfpack can produce three types of output files:
-
-- By default gltfpack outputs regular `.glb`/`.gltf` files that have been optimized for GPU consumption using various cache optimizers and quantization. These files can be loaded by standard GLTF loaders present in frameworks such as [three.js](https://threejs.org/) (r111+) and [Babylon.js](https://www.babylonjs.com/) (4.1+).
-- When using `-c` option, gltfpack outputs compressed `.glb`/`.gltf` files that use meshoptimizer codecs to reduce the download size further. Loading these files requires extending GLTF loaders with support for `MESHOPT_compression` extension; `demo/GLTFLoader.js` contains a custom version of three.js loader that can be used to load them.
-- When using `-cf` option, gltfpack outputs compressed files and an extra `.fallback.bin` file with uncompressed data. These files can be loaded by standard glTF loaders; loaders with decompression support don't need to load the fallback.
-
-When using compressed files, `js/meshopt_decoder.js` needs to be loaded to provide the WebAssembly decoder module like this:
-
-```js
-<script src="js/meshopt_decoder.js"></script>
-
-...
-
-var loader = new THREE.GLTFLoader();
-loader.setMeshoptDecoder(MeshoptDecoder);
-loader.load('pirate.glb', function (gltf) { scene.add(gltf.scene); });
-```
-
-Additionally, gltfpack can compress textures using Basis Universal format, either storing .basis images directly (`-tb` flag, supported by three.js) or using KTX2 container (`-tc` flag, requires support for `KHR_image_ktx2`). Compression is performed using `basisu` executable.
-
-## License
-
-This library is available to anybody free of charge, under the terms of MIT License (see LICENSE.md).

3rdparty/meshoptimizer/codecov.yml

@@ -1,10 +0,0 @@
-comment: false
-
-coverage:
-  status:
-    project: off
-    patch: off
-
-ignore:
-  - demo
-  - tools

3rdparty/meshoptimizer/config.cmake.in

@@ -1,4 +0,0 @@
-@PACKAGE_INIT@
-
-include("${CMAKE_CURRENT_LIST_DIR}/meshoptimizerTargets.cmake")
-check_required_components(meshoptimizer)

3rdparty/meshoptimizer/demo/GLTFLoader.js

@@ -1,3284 +0,0 @@
-/**
- * @author Rich Tibbett / https://github.com/richtr
- * @author mrdoob / http://mrdoob.com/
- * @author Tony Parisi / http://www.tonyparisi.com/
- * @author Takahiro / https://github.com/takahirox
- * @author Don McCurdy / https://www.donmccurdy.com
- */
-
-THREE.GLTFLoader = ( function () {
-
-	function GLTFLoader( manager ) {
-
-		THREE.Loader.call( this, manager );
-
-		this.dracoLoader = null;
-		this.ddsLoader = null;
-		this.basisLoader = null;
-		this.meshoptDecoder = null;
-
-	}
-
-	GLTFLoader.prototype = Object.assign( Object.create( THREE.Loader.prototype ), {
-
-		constructor: GLTFLoader,
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var scope = this;
-
-			var resourcePath;
-
-			if ( this.resourcePath !== '' ) {
-
-				resourcePath = this.resourcePath;
-
-			} else if ( this.path !== '' ) {
-
-				resourcePath = this.path;
-
-			} else {
-
-				resourcePath = THREE.LoaderUtils.extractUrlBase( url );
-
-			}
-
-			// Tells the LoadingManager to track an extra item, which resolves after
-			// the model is fully loaded. This means the count of items loaded will
-			// be incorrect, but ensures manager.onLoad() does not fire early.
-			scope.manager.itemStart( url );
-
-			var _onError = function ( e ) {
-
-				if ( onError ) {
-
-					onError( e );
-
-				} else {
-
-					console.error( e );
-
-				}
-
-				scope.manager.itemError( url );
-				scope.manager.itemEnd( url );
-
-			};
-
-			var loader = new THREE.FileLoader( scope.manager );
-
-			loader.setPath( this.path );
-			loader.setResponseType( 'arraybuffer' );
-
-			if ( scope.crossOrigin === 'use-credentials' ) {
-
-				loader.setWithCredentials( true );
-
-			}
-
-			loader.load( url, function ( data ) {
-
-				try {
-
-					scope.parse( data, resourcePath, function ( gltf ) {
-
-						onLoad( gltf );
-
-						scope.manager.itemEnd( url );
-
-					}, _onError );
-
-				} catch ( e ) {
-
-					_onError( e );
-
-				}
-
-			}, onProgress, _onError );
-
-		},
-
-		setDRACOLoader: function ( dracoLoader ) {
-
-			this.dracoLoader = dracoLoader;
-			return this;
-
-		},
-
-		setDDSLoader: function ( ddsLoader ) {
-
-			this.ddsLoader = ddsLoader;
-			return this;
-
-		},
-
-		setBasisLoader: function ( basisLoader ) {
-
-			this.basisLoader = basisLoader;
-			return this;
-
-		},
-
-		setMeshoptDecoder: function ( decoder ) {
-
-			this.meshoptDecoder = decoder;
-			return this;
-
-		},
-
-		parse: function ( data, path, onLoad, onError ) {
-
-			var content;
-			var extensions = {};
-
-			if ( typeof data === 'string' ) {
-
-				content = data;
-
-			} else {
-
-				var magic = THREE.LoaderUtils.decodeText( new Uint8Array( data, 0, 4 ) );
-
-				if ( magic === BINARY_EXTENSION_HEADER_MAGIC ) {
-
-					try {
-
-						extensions[ EXTENSIONS.KHR_BINARY_GLTF ] = new GLTFBinaryExtension( data );
-
-					} catch ( error ) {
-
-						if ( onError ) onError( error );
-						return;
-
-					}
-
-					content = extensions[ EXTENSIONS.KHR_BINARY_GLTF ].content;
-
-				} else {
-
-					content = THREE.LoaderUtils.decodeText( new Uint8Array( data ) );
-
-				}
-
-			}
-
-			var json = JSON.parse( content );
-
-			if ( json.asset === undefined || json.asset.version[ 0 ] < 2 ) {
-
-				if ( onError ) onError( new Error( 'THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported.' ) );
-				return;
-
-			}
-
-			if ( json.extensionsUsed ) {
-
-				for ( var i = 0; i < json.extensionsUsed.length; ++ i ) {
-
-					var extensionName = json.extensionsUsed[ i ];
-					var extensionsRequired = json.extensionsRequired || [];
-
-					switch ( extensionName ) {
-
-						case EXTENSIONS.KHR_LIGHTS_PUNCTUAL:
-							extensions[ extensionName ] = new GLTFLightsExtension( json );
-							break;
-
-						case EXTENSIONS.KHR_MATERIALS_UNLIT:
-							extensions[ extensionName ] = new GLTFMaterialsUnlitExtension();
-							break;
-
-						case EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS:
-							extensions[ extensionName ] = new GLTFMaterialsPbrSpecularGlossinessExtension();
-							break;
-
-						case EXTENSIONS.KHR_DRACO_MESH_COMPRESSION:
-							extensions[ extensionName ] = new GLTFDracoMeshCompressionExtension( json, this.dracoLoader );
-							break;
-
-						case EXTENSIONS.MSFT_TEXTURE_DDS:
-							extensions[ extensionName ] = new GLTFTextureDDSExtension( this.ddsLoader );
-							break;
-
-						case EXTENSIONS.KHR_TEXTURE_TRANSFORM:
-							extensions[ extensionName ] = new GLTFTextureTransformExtension();
-							break;
-
-						case EXTENSIONS.KHR_MESH_QUANTIZATION:
-							extensions[ extensionName ] = new GLTFMeshQuantizationExtension();
-							break;
-
-						case EXTENSIONS.MESHOPT_COMPRESSION:
-							extensions[ extensionName ] = new GLTFMeshoptCompressionExtension( this.meshoptDecoder );
-							break;
-
-						default:
-
-							if ( extensionsRequired.indexOf( extensionName ) >= 0 ) {
-
-								console.warn( 'THREE.GLTFLoader: Unknown extension "' + extensionName + '".' );
-
-							}
-
-					}
-
-				}
-
-			}
-
-			var parser = new GLTFParser( json, extensions, {
-
-				path: path || this.resourcePath || '',
-				crossOrigin: this.crossOrigin,
-				manager: this.manager,
-				ddsLoader: this.ddsLoader,
-				basisLoader: this.basisLoader,
-
-			} );
-
-			parser.parse( onLoad, onError );
-
-		}
-
-	} );
-
-	/* GLTFREGISTRY */
-
-	function GLTFRegistry() {
-
-		var objects = {};
-
-		return	{
-
-			get: function ( key ) {
-
-				return objects[ key ];
-
-			},
-
-			add: function ( key, object ) {
-
-				objects[ key ] = object;
-
-			},
-
-			remove: function ( key ) {
-
-				delete objects[ key ];
-
-			},
-
-			removeAll: function () {
-
-				objects = {};
-
-			}
-
-		};
-
-	}
-
-	/*********************************/
-	/********** EXTENSIONS ***********/
-	/*********************************/
-
-	var EXTENSIONS = {
-		KHR_BINARY_GLTF: 'KHR_binary_glTF',
-		KHR_DRACO_MESH_COMPRESSION: 'KHR_draco_mesh_compression',
-		KHR_LIGHTS_PUNCTUAL: 'KHR_lights_punctual',
-		KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS: 'KHR_materials_pbrSpecularGlossiness',
-		KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
-		KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
-		KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
-		MSFT_TEXTURE_DDS: 'MSFT_texture_dds',
-		MESHOPT_COMPRESSION: 'MESHOPT_compression',
-	};
-
-	/**
-	 * DDS Texture Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_texture_dds
-	 *
-	 */
-	function GLTFTextureDDSExtension( ddsLoader ) {
-
-		if ( ! ddsLoader ) {
-
-			throw new Error( 'THREE.GLTFLoader: Attempting to load .dds texture without importing THREE.DDSLoader' );
-
-		}
-
-		this.name = EXTENSIONS.MSFT_TEXTURE_DDS;
-		this.ddsLoader = ddsLoader;
-
-	}
-
-	/**
-	 * Punctual Lights Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual
-	 */
-	function GLTFLightsExtension( json ) {
-
-		this.name = EXTENSIONS.KHR_LIGHTS_PUNCTUAL;
-
-		var extension = ( json.extensions && json.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ] ) || {};
-		this.lightDefs = extension.lights || [];
-
-	}
-
-	GLTFLightsExtension.prototype.loadLight = function ( lightIndex ) {
-
-		var lightDef = this.lightDefs[ lightIndex ];
-		var lightNode;
-
-		var color = new THREE.Color( 0xffffff );
-		if ( lightDef.color !== undefined ) color.fromArray( lightDef.color );
-
-		var range = lightDef.range !== undefined ? lightDef.range : 0;
-
-		switch ( lightDef.type ) {
-
-			case 'directional':
-				lightNode = new THREE.DirectionalLight( color );
-				lightNode.target.position.set( 0, 0, - 1 );
-				lightNode.add( lightNode.target );
-				break;
-
-			case 'point':
-				lightNode = new THREE.PointLight( color );
-				lightNode.distance = range;
-				break;
-
-			case 'spot':
-				lightNode = new THREE.SpotLight( color );
-				lightNode.distance = range;
-				// Handle spotlight properties.
-				lightDef.spot = lightDef.spot || {};
-				lightDef.spot.innerConeAngle = lightDef.spot.innerConeAngle !== undefined ? lightDef.spot.innerConeAngle : 0;
-				lightDef.spot.outerConeAngle = lightDef.spot.outerConeAngle !== undefined ? lightDef.spot.outerConeAngle : Math.PI / 4.0;
-				lightNode.angle = lightDef.spot.outerConeAngle;
-				lightNode.penumbra = 1.0 - lightDef.spot.innerConeAngle / lightDef.spot.outerConeAngle;
-				lightNode.target.position.set( 0, 0, - 1 );
-				lightNode.add( lightNode.target );
-				break;
-
-			default:
-				throw new Error( 'THREE.GLTFLoader: Unexpected light type, "' + lightDef.type + '".' );
-
-		}
-
-		// Some lights (e.g. spot) default to a position other than the origin. Reset the position
-		// here, because node-level parsing will only override position if explicitly specified.
-		lightNode.position.set( 0, 0, 0 );
-
-		lightNode.decay = 2;
-
-		if ( lightDef.intensity !== undefined ) lightNode.intensity = lightDef.intensity;
-
-		lightNode.name = lightDef.name || ( 'light_' + lightIndex );
-
-		return Promise.resolve( lightNode );
-
-	};
-
-	/**
-	 * Unlit Materials Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit
-	 */
-	function GLTFMaterialsUnlitExtension() {
-
-		this.name = EXTENSIONS.KHR_MATERIALS_UNLIT;
-
-	}
-
-	GLTFMaterialsUnlitExtension.prototype.getMaterialType = function () {
-
-		return THREE.MeshBasicMaterial;
-
-	};
-
-	GLTFMaterialsUnlitExtension.prototype.extendParams = function ( materialParams, materialDef, parser ) {
-
-		var pending = [];
-
-		materialParams.color = new THREE.Color( 1.0, 1.0, 1.0 );
-		materialParams.opacity = 1.0;
-
-		var metallicRoughness = materialDef.pbrMetallicRoughness;
-
-		if ( metallicRoughness ) {
-
-			if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
-
-				var array = metallicRoughness.baseColorFactor;
-
-				materialParams.color.fromArray( array );
-				materialParams.opacity = array[ 3 ];
-
-			}
-
-			if ( metallicRoughness.baseColorTexture !== undefined ) {
-
-				pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture ) );
-
-			}
-
-		}
-
-		return Promise.all( pending );
-
-	};
-
-	/* BINARY EXTENSION */
-	var BINARY_EXTENSION_HEADER_MAGIC = 'glTF';
-	var BINARY_EXTENSION_HEADER_LENGTH = 12;
-	var BINARY_EXTENSION_CHUNK_TYPES = { JSON: 0x4E4F534A, BIN: 0x004E4942 };
-
-	function GLTFBinaryExtension( data ) {
-
-		this.name = EXTENSIONS.KHR_BINARY_GLTF;
-		this.content = null;
-		this.body = null;
-
-		var headerView = new DataView( data, 0, BINARY_EXTENSION_HEADER_LENGTH );
-
-		this.header = {
-			magic: THREE.LoaderUtils.decodeText( new Uint8Array( data.slice( 0, 4 ) ) ),
-			version: headerView.getUint32( 4, true ),
-			length: headerView.getUint32( 8, true )
-		};
-
-		if ( this.header.magic !== BINARY_EXTENSION_HEADER_MAGIC ) {
-
-			throw new Error( 'THREE.GLTFLoader: Unsupported glTF-Binary header.' );
-
-		} else if ( this.header.version < 2.0 ) {
-
-			throw new Error( 'THREE.GLTFLoader: Legacy binary file detected.' );
-
-		}
-
-		var chunkView = new DataView( data, BINARY_EXTENSION_HEADER_LENGTH );
-		var chunkIndex = 0;
-
-		while ( chunkIndex < chunkView.byteLength ) {
-
-			var chunkLength = chunkView.getUint32( chunkIndex, true );
-			chunkIndex += 4;
-
-			var chunkType = chunkView.getUint32( chunkIndex, true );
-			chunkIndex += 4;
-
-			if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON ) {
-
-				var contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength );
-				this.content = THREE.LoaderUtils.decodeText( contentArray );
-
-			} else if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN ) {
-
-				var byteOffset = BINARY_EXTENSION_HEADER_LENGTH + chunkIndex;
-				this.body = data.slice( byteOffset, byteOffset + chunkLength );
-
-			}
-
-			// Clients must ignore chunks with unknown types.
-
-			chunkIndex += chunkLength;
-
-		}
-
-		if ( this.content === null ) {
-
-			throw new Error( 'THREE.GLTFLoader: JSON content not found.' );
-
-		}
-
-	}
-
-	/**
-	 * DRACO Mesh Compression Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_draco_mesh_compression
-	 */
-	function GLTFDracoMeshCompressionExtension( json, dracoLoader ) {
-
-		if ( ! dracoLoader ) {
-
-			throw new Error( 'THREE.GLTFLoader: No DRACOLoader instance provided.' );
-
-		}
-
-		this.name = EXTENSIONS.KHR_DRACO_MESH_COMPRESSION;
-		this.json = json;
-		this.dracoLoader = dracoLoader;
-
-	}
-
-	GLTFDracoMeshCompressionExtension.prototype.decodePrimitive = function ( primitive, parser ) {
-
-		var json = this.json;
-		var dracoLoader = this.dracoLoader;
-		var bufferViewIndex = primitive.extensions[ this.name ].bufferView;
-		var gltfAttributeMap = primitive.extensions[ this.name ].attributes;
-		var threeAttributeMap = {};
-		var attributeNormalizedMap = {};
-		var attributeTypeMap = {};
-
-		for ( var attributeName in gltfAttributeMap ) {
-
-			var threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
-
-			threeAttributeMap[ threeAttributeName ] = gltfAttributeMap[ attributeName ];
-
-		}
-
-		for ( attributeName in primitive.attributes ) {
-
-			var threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
-
-			if ( gltfAttributeMap[ attributeName ] !== undefined ) {
-
-				var accessorDef = json.accessors[ primitive.attributes[ attributeName ] ];
-				var componentType = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
-
-				attributeTypeMap[ threeAttributeName ] = componentType;
-				attributeNormalizedMap[ threeAttributeName ] = accessorDef.normalized === true;
-
-			}
-
-		}
-
-		return parser.getDependency( 'bufferView', bufferViewIndex ).then( function ( bufferView ) {
-
-			return new Promise( function ( resolve ) {
-
-				dracoLoader.decodeDracoFile( bufferView, function ( geometry ) {
-
-					for ( var attributeName in geometry.attributes ) {
-
-						var attribute = geometry.attributes[ attributeName ];
-						var normalized = attributeNormalizedMap[ attributeName ];
-
-						if ( normalized !== undefined ) attribute.normalized = normalized;
-
-					}
-
-					resolve( geometry );
-
-				}, threeAttributeMap, attributeTypeMap );
-
-			} );
-
-		} );
-
-	};
-
-	/**
-	 * Texture Transform Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_transform
-	 */
-	function GLTFTextureTransformExtension() {
-
-		this.name = EXTENSIONS.KHR_TEXTURE_TRANSFORM;
-
-	}
-
-	GLTFTextureTransformExtension.prototype.extendTexture = function ( texture, transform ) {
-
-		texture = texture.clone();
-
-		if ( transform.offset !== undefined ) {
-
-			texture.offset.fromArray( transform.offset );
-
-		}
-
-		if ( transform.rotation !== undefined ) {
-
-			texture.rotation = transform.rotation;
-
-		}
-
-		if ( transform.scale !== undefined ) {
-
-			texture.repeat.fromArray( transform.scale );
-
-		}
-
-		if ( transform.texCoord !== undefined ) {
-
-			console.warn( 'THREE.GLTFLoader: Custom UV sets in "' + this.name + '" extension not yet supported.' );
-
-		}
-
-		texture.needsUpdate = true;
-
-		return texture;
-
-	};
-
-	/**
-	 * Specular-Glossiness Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness
-	 */
-	function GLTFMaterialsPbrSpecularGlossinessExtension() {
-
-		return {
-
-			name: EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS,
-
-			specularGlossinessParams: [
-				'color',
-				'map',
-				'lightMap',
-				'lightMapIntensity',
-				'aoMap',
-				'aoMapIntensity',
-				'emissive',
-				'emissiveIntensity',
-				'emissiveMap',
-				'bumpMap',
-				'bumpScale',
-				'normalMap',
-				'displacementMap',
-				'displacementScale',
-				'displacementBias',
-				'specularMap',
-				'specular',
-				'glossinessMap',
-				'glossiness',
-				'alphaMap',
-				'envMap',
-				'envMapIntensity',
-				'refractionRatio',
-			],
-
-			getMaterialType: function () {
-
-				return THREE.ShaderMaterial;
-
-			},
-
-			extendParams: function ( materialParams, materialDef, parser ) {
-
-				var pbrSpecularGlossiness = materialDef.extensions[ this.name ];
-
-				var shader = THREE.ShaderLib[ 'standard' ];
-
-				var uniforms = THREE.UniformsUtils.clone( shader.uniforms );
-
-				var specularMapParsFragmentChunk = [
-					'#ifdef USE_SPECULARMAP',
-					'	uniform sampler2D specularMap;',
-					'#endif'
-				].join( '\n' );
-
-				var glossinessMapParsFragmentChunk = [
-					'#ifdef USE_GLOSSINESSMAP',
-					'	uniform sampler2D glossinessMap;',
-					'#endif'
-				].join( '\n' );
-
-				var specularMapFragmentChunk = [
-					'vec3 specularFactor = specular;',
-					'#ifdef USE_SPECULARMAP',
-					'	vec4 texelSpecular = texture2D( specularMap, vUv );',
-					'	texelSpecular = sRGBToLinear( texelSpecular );',
-					'	// reads channel RGB, compatible with a glTF Specular-Glossiness (RGBA) texture',
-					'	specularFactor *= texelSpecular.rgb;',
-					'#endif'
-				].join( '\n' );
-
-				var glossinessMapFragmentChunk = [
-					'float glossinessFactor = glossiness;',
-					'#ifdef USE_GLOSSINESSMAP',
-					'	vec4 texelGlossiness = texture2D( glossinessMap, vUv );',
-					'	// reads channel A, compatible with a glTF Specular-Glossiness (RGBA) texture',
-					'	glossinessFactor *= texelGlossiness.a;',
-					'#endif'
-				].join( '\n' );
-
-				var lightPhysicalFragmentChunk = [
-					'PhysicalMaterial material;',
-					'material.diffuseColor = diffuseColor.rgb;',
-					'material.specularRoughness = clamp( 1.0 - glossinessFactor, 0.04, 1.0 );',
-					'material.specularColor = specularFactor.rgb;',
-				].join( '\n' );
-
-				var fragmentShader = shader.fragmentShader
-					.replace( 'uniform float roughness;', 'uniform vec3 specular;' )
-					.replace( 'uniform float metalness;', 'uniform float glossiness;' )
-					.replace( '#include <roughnessmap_pars_fragment>', specularMapParsFragmentChunk )
-					.replace( '#include <metalnessmap_pars_fragment>', glossinessMapParsFragmentChunk )
-					.replace( '#include <roughnessmap_fragment>', specularMapFragmentChunk )
-					.replace( '#include <metalnessmap_fragment>', glossinessMapFragmentChunk )
-					.replace( '#include <lights_physical_fragment>', lightPhysicalFragmentChunk );
-
-				delete uniforms.roughness;
-				delete uniforms.metalness;
-				delete uniforms.roughnessMap;
-				delete uniforms.metalnessMap;
-
-				uniforms.specular = { value: new THREE.Color().setHex( 0x111111 ) };
-				uniforms.glossiness = { value: 0.5 };
-				uniforms.specularMap = { value: null };
-				uniforms.glossinessMap = { value: null };
-
-				materialParams.vertexShader = shader.vertexShader;
-				materialParams.fragmentShader = fragmentShader;
-				materialParams.uniforms = uniforms;
-				materialParams.defines = { 'STANDARD': '' };
-
-				materialParams.color = new THREE.Color( 1.0, 1.0, 1.0 );
-				materialParams.opacity = 1.0;
-
-				var pending = [];
-
-				if ( Array.isArray( pbrSpecularGlossiness.diffuseFactor ) ) {
-
-					var array = pbrSpecularGlossiness.diffuseFactor;
-
-					materialParams.color.fromArray( array );
-					materialParams.opacity = array[ 3 ];
-
-				}
-
-				if ( pbrSpecularGlossiness.diffuseTexture !== undefined ) {
-
-					pending.push( parser.assignTexture( materialParams, 'map', pbrSpecularGlossiness.diffuseTexture ) );
-
-				}
-
-				materialParams.emissive = new THREE.Color( 0.0, 0.0, 0.0 );
-				materialParams.glossiness = pbrSpecularGlossiness.glossinessFactor !== undefined ? pbrSpecularGlossiness.glossinessFactor : 1.0;
-				materialParams.specular = new THREE.Color( 1.0, 1.0, 1.0 );
-
-				if ( Array.isArray( pbrSpecularGlossiness.specularFactor ) ) {
-
-					materialParams.specular.fromArray( pbrSpecularGlossiness.specularFactor );
-
-				}
-
-				if ( pbrSpecularGlossiness.specularGlossinessTexture !== undefined ) {
-
-					var specGlossMapDef = pbrSpecularGlossiness.specularGlossinessTexture;
-					pending.push( parser.assignTexture( materialParams, 'glossinessMap', specGlossMapDef ) );
-					pending.push( parser.assignTexture( materialParams, 'specularMap', specGlossMapDef ) );
-
-				}
-
-				return Promise.all( pending );
-
-			},
-
-			createMaterial: function ( params ) {
-
-				// setup material properties based on MeshStandardMaterial for Specular-Glossiness
-
-				var material = new THREE.ShaderMaterial( {
-					defines: params.defines,
-					vertexShader: params.vertexShader,
-					fragmentShader: params.fragmentShader,
-					uniforms: params.uniforms,
-					fog: true,
-					lights: true,
-					opacity: params.opacity,
-					transparent: params.transparent
-				} );
-
-				material.isGLTFSpecularGlossinessMaterial = true;
-
-				material.color = params.color;
-
-				material.map = params.map === undefined ? null : params.map;
-
-				material.lightMap = null;
-				material.lightMapIntensity = 1.0;
-
-				material.aoMap = params.aoMap === undefined ? null : params.aoMap;
-				material.aoMapIntensity = 1.0;
-
-				material.emissive = params.emissive;
-				material.emissiveIntensity = 1.0;
-				material.emissiveMap = params.emissiveMap === undefined ? null : params.emissiveMap;
-
-				material.bumpMap = params.bumpMap === undefined ? null : params.bumpMap;
-				material.bumpScale = 1;
-
-				material.normalMap = params.normalMap === undefined ? null : params.normalMap;
-
-				if ( params.normalScale ) material.normalScale = params.normalScale;
-
-				material.displacementMap = null;
-				material.displacementScale = 1;
-				material.displacementBias = 0;
-
-				material.specularMap = params.specularMap === undefined ? null : params.specularMap;
-				material.specular = params.specular;
-
-				material.glossinessMap = params.glossinessMap === undefined ? null : params.glossinessMap;
-				material.glossiness = params.glossiness;
-
-				material.alphaMap = null;
-
-				material.envMap = params.envMap === undefined ? null : params.envMap;
-				material.envMapIntensity = 1.0;
-
-				material.refractionRatio = 0.98;
-
-				material.extensions.derivatives = true;
-
-				return material;
-
-			},
-
-			/**
-			 * Clones a GLTFSpecularGlossinessMaterial instance. The ShaderMaterial.copy() method can
-			 * copy only properties it knows about or inherits, and misses many properties that would
-			 * normally be defined by MeshStandardMaterial.
-			 *
-			 * This method allows GLTFSpecularGlossinessMaterials to be cloned in the process of
-			 * loading a glTF model, but cloning later (e.g. by the user) would require these changes
-			 * AND also updating `.onBeforeRender` on the parent mesh.
-			 *
-			 * @param  {THREE.ShaderMaterial} source
-			 * @return {THREE.ShaderMaterial}
-			 */
-			cloneMaterial: function ( source ) {
-
-				var target = source.clone();
-
-				target.isGLTFSpecularGlossinessMaterial = true;
-
-				var params = this.specularGlossinessParams;
-
-				for ( var i = 0, il = params.length; i < il; i ++ ) {
-
-					var value = source[ params[ i ] ];
-					target[ params[ i ] ] = ( value && value.isColor ) ? value.clone() : value;
-
-				}
-
-				return target;
-
-			},
-
-			// Here's based on refreshUniformsCommon() and refreshUniformsStandard() in WebGLRenderer.
-			refreshUniforms: function ( renderer, scene, camera, geometry, material ) {
-
-				if ( material.isGLTFSpecularGlossinessMaterial !== true ) {
-
-					return;
-
-				}
-
-				var uniforms = material.uniforms;
-				var defines = material.defines;
-
-				uniforms.opacity.value = material.opacity;
-
-				uniforms.diffuse.value.copy( material.color );
-				uniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );
-
-				uniforms.map.value = material.map;
-				uniforms.specularMap.value = material.specularMap;
-				uniforms.alphaMap.value = material.alphaMap;
-
-				uniforms.lightMap.value = material.lightMap;
-				uniforms.lightMapIntensity.value = material.lightMapIntensity;
-
-				uniforms.aoMap.value = material.aoMap;
-				uniforms.aoMapIntensity.value = material.aoMapIntensity;
-
-				// uv repeat and offset setting priorities
-				// 1. color map
-				// 2. specular map
-				// 3. normal map
-				// 4. bump map
-				// 5. alpha map
-				// 6. emissive map
-
-				var uvScaleMap;
-
-				if ( material.map ) {
-
-					uvScaleMap = material.map;
-
-				} else if ( material.specularMap ) {
-
-					uvScaleMap = material.specularMap;
-
-				} else if ( material.displacementMap ) {
-
-					uvScaleMap = material.displacementMap;
-
-				} else if ( material.normalMap ) {
-
-					uvScaleMap = material.normalMap;
-
-				} else if ( material.bumpMap ) {
-
-					uvScaleMap = material.bumpMap;
-
-				} else if ( material.glossinessMap ) {
-
-					uvScaleMap = material.glossinessMap;
-
-				} else if ( material.alphaMap ) {
-
-					uvScaleMap = material.alphaMap;
-
-				} else if ( material.emissiveMap ) {
-
-					uvScaleMap = material.emissiveMap;
-
-				}
-
-				if ( uvScaleMap !== undefined ) {
-
-					// backwards compatibility
-					if ( uvScaleMap.isWebGLRenderTarget ) {
-
-						uvScaleMap = uvScaleMap.texture;
-
-					}
-
-					if ( uvScaleMap.matrixAutoUpdate === true ) {
-
-						uvScaleMap.updateMatrix();
-
-					}
-
-					uniforms.uvTransform.value.copy( uvScaleMap.matrix );
-
-				}
-
-				if ( material.envMap ) {
-
-					uniforms.envMap.value = material.envMap;
-					uniforms.envMapIntensity.value = material.envMapIntensity;
-
-					// don't flip CubeTexture envMaps, flip everything else:
-					//  WebGLRenderTargetCube will be flipped for backwards compatibility
-					//  WebGLRenderTargetCube.texture will be flipped because it's a Texture and NOT a CubeTexture
-					// this check must be handled differently, or removed entirely, if WebGLRenderTargetCube uses a CubeTexture in the future
-					uniforms.flipEnvMap.value = material.envMap.isCubeTexture ? - 1 : 1;
-
-					uniforms.reflectivity.value = material.reflectivity;
-					uniforms.refractionRatio.value = material.refractionRatio;
-
-					uniforms.maxMipLevel.value = renderer.properties.get( material.envMap ).__maxMipLevel;
-
-				}
-
-				uniforms.specular.value.copy( material.specular );
-				uniforms.glossiness.value = material.glossiness;
-
-				uniforms.glossinessMap.value = material.glossinessMap;
-
-				uniforms.emissiveMap.value = material.emissiveMap;
-				uniforms.bumpMap.value = material.bumpMap;
-				uniforms.normalMap.value = material.normalMap;
-
-				uniforms.displacementMap.value = material.displacementMap;
-				uniforms.displacementScale.value = material.displacementScale;
-				uniforms.displacementBias.value = material.displacementBias;
-
-				if ( uniforms.glossinessMap.value !== null && defines.USE_GLOSSINESSMAP === undefined ) {
-
-					defines.USE_GLOSSINESSMAP = '';
-					// set USE_ROUGHNESSMAP to enable vUv
-					defines.USE_ROUGHNESSMAP = '';
-
-				}
-
-				if ( uniforms.glossinessMap.value === null && defines.USE_GLOSSINESSMAP !== undefined ) {
-
-					delete defines.USE_GLOSSINESSMAP;
-					delete defines.USE_ROUGHNESSMAP;
-
-				}
-
-			}
-
-		};
-
-	}
-
-	/**
-	 * Mesh Quantization Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization
-	 */
-	function GLTFMeshQuantizationExtension() {
-
-		this.name = EXTENSIONS.KHR_MESH_QUANTIZATION;
-
-	}
-
-	/**
-	 * meshoptimizer Compression Extension
-	 */
-	function GLTFMeshoptCompressionExtension( meshoptDecoder ) {
-
-		if ( ! meshoptDecoder ) {
-
-			throw new Error( 'THREE.GLTFLoader: No MeshoptDecoder instance provided.' );
-
-		}
-
-		this.name = EXTENSIONS.MESHOPT_COMPRESSION;
-		this.meshoptDecoder = meshoptDecoder;
-
-	}
-
-	GLTFMeshoptCompressionExtension.prototype.decodeBufferView = function ( extensionDef, buffer ) {
-
-		var decoder = this.meshoptDecoder;
-
-		return decoder.ready.then( function () {
-
-			var byteOffset = extensionDef.byteOffset || 0;
-			var byteLength = extensionDef.byteLength || 0;
-
-			var count = extensionDef.count;
-			var stride = extensionDef.byteStride;
-
-			var result = new ArrayBuffer(count * stride);
-			var source = new Uint8Array(buffer, byteOffset, byteLength);
-
-			switch ( extensionDef.mode ) {
-
-				case 0:
-					decoder.decodeVertexBuffer(new Uint8Array(result), count, stride, source);
-					break;
-
-				case 1:
-					decoder.decodeIndexBuffer(new Uint8Array(result), count, stride, source);
-					break;
-
-				default:
-					throw new Error( 'THREE.GLTFLoader: Unrecognized meshopt compression mode.' );
-
-			}
-
-			return result;
-
-		} );
-
-	};
-
-	/*********************************/
-	/********** INTERPOLATION ********/
-	/*********************************/
-
-	// Spline Interpolation
-	// Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#appendix-c-spline-interpolation
-	function GLTFCubicSplineInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
-
-		THREE.Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
-
-	}
-
-	GLTFCubicSplineInterpolant.prototype = Object.create( THREE.Interpolant.prototype );
-	GLTFCubicSplineInterpolant.prototype.constructor = GLTFCubicSplineInterpolant;
-
-	GLTFCubicSplineInterpolant.prototype.copySampleValue_ = function ( index ) {
-
-		// Copies a sample value to the result buffer. See description of glTF
-		// CUBICSPLINE values layout in interpolate_() function below.
-
-		var result = this.resultBuffer,
-			values = this.sampleValues,
-			valueSize = this.valueSize,
-			offset = index * valueSize * 3 + valueSize;
-
-		for ( var i = 0; i !== valueSize; i ++ ) {
-
-			result[ i ] = values[ offset + i ];
-
-		}
-
-		return result;
-
-	};
-
-	GLTFCubicSplineInterpolant.prototype.beforeStart_ = GLTFCubicSplineInterpolant.prototype.copySampleValue_;
-
-	GLTFCubicSplineInterpolant.prototype.afterEnd_ = GLTFCubicSplineInterpolant.prototype.copySampleValue_;
-
-	GLTFCubicSplineInterpolant.prototype.interpolate_ = function ( i1, t0, t, t1 ) {
-
-		var result = this.resultBuffer;
-		var values = this.sampleValues;
-		var stride = this.valueSize;
-
-		var stride2 = stride * 2;
-		var stride3 = stride * 3;
-
-		var td = t1 - t0;
-
-		var p = ( t - t0 ) / td;
-		var pp = p * p;
-		var ppp = pp * p;
-
-		var offset1 = i1 * stride3;
-		var offset0 = offset1 - stride3;
-
-		var s2 = - 2 * ppp + 3 * pp;
-		var s3 = ppp - pp;
-		var s0 = 1 - s2;
-		var s1 = s3 - pp + p;
-
-		// Layout of keyframe output values for CUBICSPLINE animations:
-		//   [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]
-		for ( var i = 0; i !== stride; i ++ ) {
-
-			var p0 = values[ offset0 + i + stride ]; // splineVertex_k
-			var m0 = values[ offset0 + i + stride2 ] * td; // outTangent_k * (t_k+1 - t_k)
-			var p1 = values[ offset1 + i + stride ]; // splineVertex_k+1
-			var m1 = values[ offset1 + i ] * td; // inTangent_k+1 * (t_k+1 - t_k)
-
-			result[ i ] = s0 * p0 + s1 * m0 + s2 * p1 + s3 * m1;
-
-		}
-
-		return result;
-
-	};
-
-	/*********************************/
-	/********** INTERNALS ************/
-	/*********************************/
-
-	/* CONSTANTS */
-
-	var WEBGL_CONSTANTS = {
-		FLOAT: 5126,
-		//FLOAT_MAT2: 35674,
-		FLOAT_MAT3: 35675,
-		FLOAT_MAT4: 35676,
-		FLOAT_VEC2: 35664,
-		FLOAT_VEC3: 35665,
-		FLOAT_VEC4: 35666,
-		LINEAR: 9729,
-		REPEAT: 10497,
-		SAMPLER_2D: 35678,
-		POINTS: 0,
-		LINES: 1,
-		LINE_LOOP: 2,
-		LINE_STRIP: 3,
-		TRIANGLES: 4,
-		TRIANGLE_STRIP: 5,
-		TRIANGLE_FAN: 6,
-		UNSIGNED_BYTE: 5121,
-		UNSIGNED_SHORT: 5123
-	};
-
-	var WEBGL_COMPONENT_TYPES = {
-		5120: Int8Array,
-		5121: Uint8Array,
-		5122: Int16Array,
-		5123: Uint16Array,
-		5125: Uint32Array,
-		5126: Float32Array
-	};
-
-	var WEBGL_FILTERS = {
-		9728: THREE.NearestFilter,
-		9729: THREE.LinearFilter,
-		9984: THREE.NearestMipmapNearestFilter,
-		9985: THREE.LinearMipmapNearestFilter,
-		9986: THREE.NearestMipmapLinearFilter,
-		9987: THREE.LinearMipmapLinearFilter
-	};
-
-	var WEBGL_WRAPPINGS = {
-		33071: THREE.ClampToEdgeWrapping,
-		33648: THREE.MirroredRepeatWrapping,
-		10497: THREE.RepeatWrapping
-	};
-
-	var WEBGL_TYPE_SIZES = {
-		'SCALAR': 1,
-		'VEC2': 2,
-		'VEC3': 3,
-		'VEC4': 4,
-		'MAT2': 4,
-		'MAT3': 9,
-		'MAT4': 16
-	};
-
-	var ATTRIBUTES = {
-		POSITION: 'position',
-		NORMAL: 'normal',
-		TANGENT: 'tangent',
-		TEXCOORD_0: 'uv',
-		TEXCOORD_1: 'uv2',
-		COLOR_0: 'color',
-		WEIGHTS_0: 'skinWeight',
-		JOINTS_0: 'skinIndex',
-	};
-
-	var PATH_PROPERTIES = {
-		scale: 'scale',
-		translation: 'position',
-		rotation: 'quaternion',
-		weights: 'morphTargetInfluences'
-	};
-
-	var INTERPOLATION = {
-		CUBICSPLINE: undefined, // We use a custom interpolant (GLTFCubicSplineInterpolation) for CUBICSPLINE tracks. Each
-		                        // keyframe track will be initialized with a default interpolation type, then modified.
-		LINEAR: THREE.InterpolateLinear,
-		STEP: THREE.InterpolateDiscrete
-	};
-
-	var ALPHA_MODES = {
-		OPAQUE: 'OPAQUE',
-		MASK: 'MASK',
-		BLEND: 'BLEND'
-	};
-
-	var MIME_TYPE_FORMATS = {
-		'image/png': THREE.RGBAFormat,
-		'image/jpeg': THREE.RGBFormat
-	};
-
-	/* UTILITY FUNCTIONS */
-
-	function resolveURL( url, path ) {
-
-		// Invalid URL
-		if ( typeof url !== 'string' || url === '' ) return '';
-
-		// Host Relative URL
-		if ( /^https?:\/\//i.test( path ) && /^\//.test( url ) ) {
-
-			path = path.replace( /(^https?:\/\/[^\/]+).*/i, '$1' );
-
-		}
-
-		// Absolute URL http://,https://,//
-		if ( /^(https?:)?\/\//i.test( url ) ) return url;
-
-		// Data URI
-		if ( /^data:.*,.*$/i.test( url ) ) return url;
-
-		// Blob URL
-		if ( /^blob:.*$/i.test( url ) ) return url;
-
-		// Relative URL
-		return path + url;
-
-	}
-
-	var defaultMaterial;
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#default-material
-	 */
-	function createDefaultMaterial() {
-
-		defaultMaterial = defaultMaterial || new THREE.MeshStandardMaterial( {
-			color: 0xFFFFFF,
-			emissive: 0x000000,
-			metalness: 1,
-			roughness: 1,
-			transparent: false,
-			depthTest: true,
-			side: THREE.FrontSide
-		} );
-
-		return defaultMaterial;
-
-	}
-
-	function addUnknownExtensionsToUserData( knownExtensions, object, objectDef ) {
-
-		// Add unknown glTF extensions to an object's userData.
-
-		for ( var name in objectDef.extensions ) {
-
-			if ( knownExtensions[ name ] === undefined ) {
-
-				object.userData.gltfExtensions = object.userData.gltfExtensions || {};
-				object.userData.gltfExtensions[ name ] = objectDef.extensions[ name ];
-
-			}
-
-		}
-
-	}
-
-	/**
-	 * @param {THREE.Object3D|THREE.Material|THREE.BufferGeometry} object
-	 * @param {GLTF.definition} gltfDef
-	 */
-	function assignExtrasToUserData( object, gltfDef ) {
-
-		if ( gltfDef.extras !== undefined ) {
-
-			if ( typeof gltfDef.extras === 'object' ) {
-
-				Object.assign( object.userData, gltfDef.extras );
-
-			} else {
-
-				console.warn( 'THREE.GLTFLoader: Ignoring primitive type .extras, ' + gltfDef.extras );
-
-			}
-
-		}
-
-	}
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#morph-targets
-	 *
-	 * @param {THREE.BufferGeometry} geometry
-	 * @param {Array<GLTF.Target>} targets
-	 * @param {GLTFParser} parser
-	 * @return {Promise<THREE.BufferGeometry>}
-	 */
-	function addMorphTargets( geometry, targets, parser ) {
-
-		var hasMorphPosition = false;
-		var hasMorphNormal = false;
-
-		for ( var i = 0, il = targets.length; i < il; i ++ ) {
-
-			var target = targets[ i ];
-
-			if ( target.POSITION !== undefined ) hasMorphPosition = true;
-			if ( target.NORMAL !== undefined ) hasMorphNormal = true;
-
-			if ( hasMorphPosition && hasMorphNormal ) break;
-
-		}
-
-		if ( ! hasMorphPosition && ! hasMorphNormal ) return Promise.resolve( geometry );
-
-		var pendingPositionAccessors = [];
-		var pendingNormalAccessors = [];
-
-		for ( var i = 0, il = targets.length; i < il; i ++ ) {
-
-			var target = targets[ i ];
-
-			if ( hasMorphPosition ) {
-
-				var pendingAccessor = target.POSITION !== undefined
-					? parser.getDependency( 'accessor', target.POSITION )
-					: geometry.attributes.position;
-
-				pendingPositionAccessors.push( pendingAccessor );
-
-			}
-
-			if ( hasMorphNormal ) {
-
-				var pendingAccessor = target.NORMAL !== undefined
-					? parser.getDependency( 'accessor', target.NORMAL )
-					: geometry.attributes.normal;
-
-				pendingNormalAccessors.push( pendingAccessor );
-
-			}
-
-		}
-
-		return Promise.all( [
-			Promise.all( pendingPositionAccessors ),
-			Promise.all( pendingNormalAccessors )
-		] ).then( function ( accessors ) {
-
-			var morphPositions = accessors[ 0 ];
-			var morphNormals = accessors[ 1 ];
-
-			if ( hasMorphPosition ) geometry.morphAttributes.position = morphPositions;
-			if ( hasMorphNormal ) geometry.morphAttributes.normal = morphNormals;
-			geometry.morphTargetsRelative = true;
-
-			return geometry;
-
-		} );
-
-	}
-
-	/**
-	 * @param {THREE.Mesh} mesh
-	 * @param {GLTF.Mesh} meshDef
-	 */
-	function updateMorphTargets( mesh, meshDef ) {
-
-		mesh.updateMorphTargets();
-
-		if ( meshDef.weights !== undefined ) {
-
-			for ( var i = 0, il = meshDef.weights.length; i < il; i ++ ) {
-
-				mesh.morphTargetInfluences[ i ] = meshDef.weights[ i ];
-
-			}
-
-		}
-
-		// .extras has user-defined data, so check that .extras.targetNames is an array.
-		if ( meshDef.extras && Array.isArray( meshDef.extras.targetNames ) ) {
-
-			var targetNames = meshDef.extras.targetNames;
-
-			if ( mesh.morphTargetInfluences.length === targetNames.length ) {
-
-				mesh.morphTargetDictionary = {};
-
-				for ( var i = 0, il = targetNames.length; i < il; i ++ ) {
-
-					mesh.morphTargetDictionary[ targetNames[ i ] ] = i;
-
-				}
-
-			} else {
-
-				console.warn( 'THREE.GLTFLoader: Invalid extras.targetNames length. Ignoring names.' );
-
-			}
-
-		}
-
-	}
-
-	function createPrimitiveKey( primitiveDef ) {
-
-		var dracoExtension = primitiveDef.extensions && primitiveDef.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ];
-		var geometryKey;
-
-		if ( dracoExtension ) {
-
-			geometryKey = 'draco:' + dracoExtension.bufferView
-				+ ':' + dracoExtension.indices
-				+ ':' + createAttributesKey( dracoExtension.attributes );
-
-		} else {
-
-			geometryKey = primitiveDef.indices + ':' + createAttributesKey( primitiveDef.attributes ) + ':' + primitiveDef.mode;
-
-		}
-
-		return geometryKey;
-
-	}
-
-	function createAttributesKey( attributes ) {
-
-		var attributesKey = '';
-
-		var keys = Object.keys( attributes ).sort();
-
-		for ( var i = 0, il = keys.length; i < il; i ++ ) {
-
-			attributesKey += keys[ i ] + ':' + attributes[ keys[ i ] ] + ';';
-
-		}
-
-		return attributesKey;
-
-	}
-
-	/* GLTF PARSER */
-
-	function GLTFParser( json, extensions, options ) {
-
-		this.json = json || {};
-		this.extensions = extensions || {};
-		this.options = options || {};
-
-		// loader object cache
-		this.cache = new GLTFRegistry();
-
-		// BufferGeometry caching
-		this.primitiveCache = {};
-
-		this.textureLoader = new THREE.TextureLoader( this.options.manager );
-		this.textureLoader.setCrossOrigin( this.options.crossOrigin );
-
-		this.fileLoader = new THREE.FileLoader( this.options.manager );
-		this.fileLoader.setResponseType( 'arraybuffer' );
-
-		if ( this.options.crossOrigin === 'use-credentials' ) {
-
-			this.fileLoader.setWithCredentials( true );
-
-		}
-
-	}
-
-	GLTFParser.prototype.parse = function ( onLoad, onError ) {
-
-		var parser = this;
-		var json = this.json;
-		var extensions = this.extensions;
-
-		// Clear the loader cache
-		this.cache.removeAll();
-
-		// Mark the special nodes/meshes in json for efficient parse
-		this.markDefs();
-
-		Promise.all( [
-
-			this.getDependencies( 'scene' ),
-			this.getDependencies( 'animation' ),
-			this.getDependencies( 'camera' ),
-
-		] ).then( function ( dependencies ) {
-
-			var result = {
-				scene: dependencies[ 0 ][ json.scene || 0 ],
-				scenes: dependencies[ 0 ],
-				animations: dependencies[ 1 ],
-				cameras: dependencies[ 2 ],
-				asset: json.asset,
-				parser: parser,
-				userData: {}
-			};
-
-			addUnknownExtensionsToUserData( extensions, result, json );
-
-			assignExtrasToUserData( result, json );
-
-			onLoad( result );
-
-		} ).catch( onError );
-
-	};
-
-	/**
-	 * Marks the special nodes/meshes in json for efficient parse.
-	 */
-	GLTFParser.prototype.markDefs = function () {
-
-		var nodeDefs = this.json.nodes || [];
-		var skinDefs = this.json.skins || [];
-		var meshDefs = this.json.meshes || [];
-
-		var meshReferences = {};
-		var meshUses = {};
-
-		// Nothing in the node definition indicates whether it is a Bone or an
-		// Object3D. Use the skins' joint references to mark bones.
-		for ( var skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex ++ ) {
-
-			var joints = skinDefs[ skinIndex ].joints;
-
-			for ( var i = 0, il = joints.length; i < il; i ++ ) {
-
-				nodeDefs[ joints[ i ] ].isBone = true;
-
-			}
-
-		}
-
-		// Meshes can (and should) be reused by multiple nodes in a glTF asset. To
-		// avoid having more than one THREE.Mesh with the same name, count
-		// references and rename instances below.
-		//
-		// Example: CesiumMilkTruck sample model reuses "Wheel" meshes.
-		for ( var nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {
-
-			var nodeDef = nodeDefs[ nodeIndex ];
-
-			if ( nodeDef.mesh !== undefined ) {
-
-				if ( meshReferences[ nodeDef.mesh ] === undefined ) {
-
-					meshReferences[ nodeDef.mesh ] = meshUses[ nodeDef.mesh ] = 0;
-
-				}
-
-				meshReferences[ nodeDef.mesh ] ++;
-
-				// Nothing in the mesh definition indicates whether it is
-				// a SkinnedMesh or Mesh. Use the node's mesh reference
-				// to mark SkinnedMesh if node has skin.
-				if ( nodeDef.skin !== undefined ) {
-
-					meshDefs[ nodeDef.mesh ].isSkinnedMesh = true;
-
-				}
-
-			}
-
-		}
-
-		this.json.meshReferences = meshReferences;
-		this.json.meshUses = meshUses;
-
-	};
-
-	/**
-	 * Requests the specified dependency asynchronously, with caching.
-	 * @param {string} type
-	 * @param {number} index
-	 * @return {Promise<THREE.Object3D|THREE.Material|THREE.Texture|THREE.AnimationClip|ArrayBuffer|Object>}
-	 */
-	GLTFParser.prototype.getDependency = function ( type, index ) {
-
-		var cacheKey = type + ':' + index;
-		var dependency = this.cache.get( cacheKey );
-
-		if ( ! dependency ) {
-
-			switch ( type ) {
-
-				case 'scene':
-					dependency = this.loadScene( index );
-					break;
-
-				case 'node':
-					dependency = this.loadNode( index );
-					break;
-
-				case 'mesh':
-					dependency = this.loadMesh( index );
-					break;
-
-				case 'accessor':
-					dependency = this.loadAccessor( index );
-					break;
-
-				case 'bufferView':
-					dependency = this.loadBufferView( index );
-					break;
-
-				case 'buffer':
-					dependency = this.loadBuffer( index );
-					break;
-
-				case 'material':
-					dependency = this.loadMaterial( index );
-					break;
-
-				case 'texture':
-					dependency = this.loadTexture( index );
-					break;
-
-				case 'skin':
-					dependency = this.loadSkin( index );
-					break;
-
-				case 'animation':
-					dependency = this.loadAnimation( index );
-					break;
-
-				case 'camera':
-					dependency = this.loadCamera( index );
-					break;
-
-				case 'light':
-					dependency = this.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].loadLight( index );
-					break;
-
-				default:
-					throw new Error( 'Unknown type: ' + type );
-
-			}
-
-			this.cache.add( cacheKey, dependency );
-
-		}
-
-		return dependency;
-
-	};
-
-	/**
-	 * Requests all dependencies of the specified type asynchronously, with caching.
-	 * @param {string} type
-	 * @return {Promise<Array<Object>>}
-	 */
-	GLTFParser.prototype.getDependencies = function ( type ) {
-
-		var dependencies = this.cache.get( type );
-
-		if ( ! dependencies ) {
-
-			var parser = this;
-			var defs = this.json[ type + ( type === 'mesh' ? 'es' : 's' ) ] || [];
-
-			dependencies = Promise.all( defs.map( function ( def, index ) {
-
-				return parser.getDependency( type, index );
-
-			} ) );
-
-			this.cache.add( type, dependencies );
-
-		}
-
-		return dependencies;
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
-	 * @param {number} bufferIndex
-	 * @return {Promise<ArrayBuffer>}
-	 */
-	GLTFParser.prototype.loadBuffer = function ( bufferIndex ) {
-
-		var bufferDef = this.json.buffers[ bufferIndex ];
-		var loader = this.fileLoader;
-
-		if ( bufferDef.type && bufferDef.type !== 'arraybuffer' ) {
-
-			throw new Error( 'THREE.GLTFLoader: ' + bufferDef.type + ' buffer type is not supported.' );
-
-		}
-
-		// If present, GLB container is required to be the first buffer.
-		if ( bufferDef.uri === undefined && bufferIndex === 0 ) {
-
-			return Promise.resolve( this.extensions[ EXTENSIONS.KHR_BINARY_GLTF ].body );
-
-		}
-
-		var options = this.options;
-
-		return new Promise( function ( resolve, reject ) {
-
-			loader.load( resolveURL( bufferDef.uri, options.path ), resolve, undefined, function () {
-
-				reject( new Error( 'THREE.GLTFLoader: Failed to load buffer "' + bufferDef.uri + '".' ) );
-
-			} );
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
-	 * @param {number} bufferViewIndex
-	 * @return {Promise<ArrayBuffer>}
-	 */
-	GLTFParser.prototype.loadBufferView = function ( bufferViewIndex ) {
-
-		var bufferViewDef = this.json.bufferViews[ bufferViewIndex ];
-
-		if ( bufferViewDef.extensions && bufferViewDef.extensions[ EXTENSIONS.MESHOPT_COMPRESSION ] ) {
-
-			var extension = this.extensions[ EXTENSIONS.MESHOPT_COMPRESSION ];
-			var extensionDef = bufferViewDef.extensions[ EXTENSIONS.MESHOPT_COMPRESSION ];
-
-			return this.getDependency( 'buffer', extensionDef.buffer ).then( function ( buffer ) {
-
-				return extension.decodeBufferView( extensionDef, buffer );
-
-			} );
-
-		}
-
-		return this.getDependency( 'buffer', bufferViewDef.buffer ).then( function ( buffer ) {
-
-			var byteLength = bufferViewDef.byteLength || 0;
-			var byteOffset = bufferViewDef.byteOffset || 0;
-			return buffer.slice( byteOffset, byteOffset + byteLength );
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#accessors
-	 * @param {number} accessorIndex
-	 * @return {Promise<THREE.BufferAttribute|THREE.InterleavedBufferAttribute>}
-	 */
-	GLTFParser.prototype.loadAccessor = function ( accessorIndex ) {
-
-		var parser = this;
-		var json = this.json;
-
-		var accessorDef = this.json.accessors[ accessorIndex ];
-
-		if ( accessorDef.bufferView === undefined && accessorDef.sparse === undefined ) {
-
-			// Ignore empty accessors, which may be used to declare runtime
-			// information about attributes coming from another source (e.g. Draco
-			// compression extension).
-			return Promise.resolve( null );
-
-		}
-
-		var pendingBufferViews = [];
-
-		if ( accessorDef.bufferView !== undefined ) {
-
-			pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.bufferView ) );
-
-		} else {
-
-			pendingBufferViews.push( null );
-
-		}
-
-		if ( accessorDef.sparse !== undefined ) {
-
-			pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.sparse.indices.bufferView ) );
-			pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.sparse.values.bufferView ) );
-
-		}
-
-		return Promise.all( pendingBufferViews ).then( function ( bufferViews ) {
-
-			var bufferView = bufferViews[ 0 ];
-
-			var itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
-			var TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
-
-			// For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
-			var elementBytes = TypedArray.BYTES_PER_ELEMENT;
-			var itemBytes = elementBytes * itemSize;
-			var byteOffset = accessorDef.byteOffset || 0;
-			var byteStride = accessorDef.bufferView !== undefined ? json.bufferViews[ accessorDef.bufferView ].byteStride : undefined;
-			var normalized = accessorDef.normalized === true;
-			var array, bufferAttribute;
-
-			// The buffer is not interleaved if the stride is the item size in bytes.
-			if ( byteStride && byteStride !== itemBytes ) {
-
-				// Each "slice" of the buffer, as defined by 'count' elements of 'byteStride' bytes, gets its own InterleavedBuffer
-				// This makes sure that IBA.count reflects accessor.count properly
-				var ibSlice = Math.floor( byteOffset / byteStride );
-				var ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType + ':' + ibSlice + ':' + accessorDef.count;
-				var ib = parser.cache.get( ibCacheKey );
-
-				if ( ! ib ) {
-
-					array = new TypedArray( bufferView, ibSlice * byteStride, accessorDef.count * byteStride / elementBytes );
-
-					// Integer parameters to IB/IBA are in array elements, not bytes.
-					ib = new THREE.InterleavedBuffer( array, byteStride / elementBytes );
-
-					parser.cache.add( ibCacheKey, ib );
-
-				}
-
-				bufferAttribute = new THREE.InterleavedBufferAttribute( ib, itemSize, ( byteOffset % byteStride ) / elementBytes, normalized );
-
-			} else {
-
-				if ( bufferView === null ) {
-
-					array = new TypedArray( accessorDef.count * itemSize );
-
-				} else {
-
-					array = new TypedArray( bufferView, byteOffset, accessorDef.count * itemSize );
-
-				}
-
-				bufferAttribute = new THREE.BufferAttribute( array, itemSize, normalized );
-
-			}
-
-			// https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#sparse-accessors
-			if ( accessorDef.sparse !== undefined ) {
-
-				var itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR;
-				var TypedArrayIndices = WEBGL_COMPONENT_TYPES[ accessorDef.sparse.indices.componentType ];
-
-				var byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0;
-				var byteOffsetValues = accessorDef.sparse.values.byteOffset || 0;
-
-				var sparseIndices = new TypedArrayIndices( bufferViews[ 1 ], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices );
-				var sparseValues = new TypedArray( bufferViews[ 2 ], byteOffsetValues, accessorDef.sparse.count * itemSize );
-
-				if ( bufferView !== null ) {
-
-					// Avoid modifying the original ArrayBuffer, if the bufferView wasn't initialized with zeroes.
-					bufferAttribute = new THREE.BufferAttribute( bufferAttribute.array.slice(), bufferAttribute.itemSize, bufferAttribute.normalized );
-
-				}
-
-				for ( var i = 0, il = sparseIndices.length; i < il; i ++ ) {
-
-					var index = sparseIndices[ i ];
-
-					bufferAttribute.setX( index, sparseValues[ i * itemSize ] );
-					if ( itemSize >= 2 ) bufferAttribute.setY( index, sparseValues[ i * itemSize + 1 ] );
-					if ( itemSize >= 3 ) bufferAttribute.setZ( index, sparseValues[ i * itemSize + 2 ] );
-					if ( itemSize >= 4 ) bufferAttribute.setW( index, sparseValues[ i * itemSize + 3 ] );
-					if ( itemSize >= 5 ) throw new Error( 'THREE.GLTFLoader: Unsupported itemSize in sparse BufferAttribute.' );
-
-				}
-
-			}
-
-			return bufferAttribute;
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#textures
-	 * @param {number} textureIndex
-	 * @return {Promise<THREE.Texture>}
-	 */
-	GLTFParser.prototype.loadTexture = function ( textureIndex ) {
-
-		var parser = this;
-		var json = this.json;
-		var options = this.options;
-		var textureLoader = this.textureLoader;
-
-		var URL = window.URL || window.webkitURL;
-
-		var textureDef = json.textures[ textureIndex ];
-
-		var textureExtensions = textureDef.extensions || {};
-
-		var source;
-
-		if ( textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ] ) {
-
-			source = json.images[ textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ].source ];
-
-		} else {
-
-			source = json.images[ textureDef.source ];
-
-		}
-
-		var sourceURI = source.uri;
-		var isObjectURL = false;
-
-		if ( source.bufferView !== undefined ) {
-
-			// Load binary image data from bufferView, if provided.
-
-			sourceURI = parser.getDependency( 'bufferView', source.bufferView ).then( function ( bufferView ) {
-
-				isObjectURL = true;
-				var blob = new Blob( [ bufferView ], { type: source.mimeType } );
-				sourceURI = URL.createObjectURL( blob );
-				return sourceURI;
-
-			} );
-
-		}
-
-		return Promise.resolve( sourceURI ).then( function ( sourceURI ) {
-
-			// Load Texture resource.
-
-			var loader = options.manager.getHandler( sourceURI );
-
-			if ( ! loader && textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ] ) {
-
-				loader = parser.extensions[ EXTENSIONS.MSFT_TEXTURE_DDS ].ddsLoader
-
-			}
-
-			if ( ! loader && options.ddsLoader ) {
-
-				if ( source.uri !== undefined && source.uri.toLowerCase().endsWith(".dds") ) {
-
-					loader = options.ddsLoader;
-
-				} else if ( source.bufferView !== undefined && source.mimeType == "image/vnd-ms.dds" ) {
-
-					loader = options.ddsLoader;
-
-				}
-
-			}
-
-			if ( ! loader && options.basisLoader ) {
-
-				if ( source.uri !== undefined && source.uri.toLowerCase().endsWith(".basis") ) {
-
-					loader = options.basisLoader;
-
-				} else if ( source.bufferView !== undefined && source.mimeType == "image/basis" ) {
-
-					loader = options.basisLoader;
-
-				}
-
-			}
-
-			if ( ! loader ) {
-
-				loader = textureLoader;
-
-			}
-
-			return new Promise( function ( resolve, reject ) {
-
-				loader.load( resolveURL( sourceURI, options.path ), resolve, undefined, reject );
-
-			} );
-
-		} ).then( function ( texture ) {
-
-			// Clean up resources and configure Texture.
-
-			if ( isObjectURL === true ) {
-
-				URL.revokeObjectURL( sourceURI );
-
-			}
-
-			texture.flipY = false;
-
-			if ( textureDef.name !== undefined ) texture.name = textureDef.name;
-
-			// Ignore unknown mime types, like DDS files.
-			if ( source.mimeType in MIME_TYPE_FORMATS ) {
-
-				texture.format = MIME_TYPE_FORMATS[ source.mimeType ];
-
-			}
-
-			var samplers = json.samplers || {};
-			var sampler = samplers[ textureDef.sampler ] || {};
-
-			texture.magFilter = WEBGL_FILTERS[ sampler.magFilter ] || THREE.LinearFilter;
-			texture.minFilter = WEBGL_FILTERS[ sampler.minFilter ] || THREE.LinearMipmapLinearFilter;
-			texture.wrapS = WEBGL_WRAPPINGS[ sampler.wrapS ] || THREE.RepeatWrapping;
-			texture.wrapT = WEBGL_WRAPPINGS[ sampler.wrapT ] || THREE.RepeatWrapping;
-
-			return texture;
-
-		} );
-
-	};
-
-	/**
-	 * Asynchronously assigns a texture to the given material parameters.
-	 * @param {Object} materialParams
-	 * @param {string} mapName
-	 * @param {Object} mapDef
-	 * @return {Promise}
-	 */
-	GLTFParser.prototype.assignTexture = function ( materialParams, mapName, mapDef ) {
-
-		var parser = this;
-
-		return this.getDependency( 'texture', mapDef.index ).then( function ( texture ) {
-
-			if ( ! texture.isCompressedTexture ) {
-
-				switch ( mapName ) {
-
-					case 'aoMap':
-					case 'emissiveMap':
-					case 'metalnessMap':
-					case 'normalMap':
-					case 'roughnessMap':
-						texture.format = THREE.RGBFormat;
-						break;
-
-				}
-
-			}
-
-			if ( parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] ) {
-
-				var transform = mapDef.extensions !== undefined ? mapDef.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] : undefined;
-
-				if ( transform ) {
-
-					texture = parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ].extendTexture( texture, transform );
-
-				}
-
-			}
-
-			materialParams[ mapName ] = texture;
-
-		} );
-
-	};
-
-	/**
-	 * Assigns final material to a Mesh, Line, or Points instance. The instance
-	 * already has a material (generated from the glTF material options alone)
-	 * but reuse of the same glTF material may require multiple threejs materials
-	 * to accomodate different primitive types, defines, etc. New materials will
-	 * be created if necessary, and reused from a cache.
-	 * @param  {THREE.Object3D} mesh Mesh, Line, or Points instance.
-	 */
-	GLTFParser.prototype.assignFinalMaterial = function ( mesh ) {
-
-		var geometry = mesh.geometry;
-		var material = mesh.material;
-		var extensions = this.extensions;
-
-		var useVertexTangents = geometry.attributes.tangent !== undefined;
-		var useVertexColors = geometry.attributes.color !== undefined;
-		var useFlatShading = geometry.attributes.normal === undefined;
-		var useSkinning = mesh.isSkinnedMesh === true;
-		var useMorphTargets = Object.keys( geometry.morphAttributes ).length > 0;
-		var useMorphNormals = useMorphTargets && geometry.morphAttributes.normal !== undefined;
-
-		if ( mesh.isPoints ) {
-
-			var cacheKey = 'PointsMaterial:' + material.uuid;
-
-			var pointsMaterial = this.cache.get( cacheKey );
-
-			if ( ! pointsMaterial ) {
-
-				pointsMaterial = new THREE.PointsMaterial();
-				THREE.Material.prototype.copy.call( pointsMaterial, material );
-				pointsMaterial.color.copy( material.color );
-				pointsMaterial.map = material.map;
-				pointsMaterial.sizeAttenuation = false; // glTF spec says points should be 1px
-
-				this.cache.add( cacheKey, pointsMaterial );
-
-			}
-
-			material = pointsMaterial;
-
-		} else if ( mesh.isLine ) {
-
-			var cacheKey = 'LineBasicMaterial:' + material.uuid;
-
-			var lineMaterial = this.cache.get( cacheKey );
-
-			if ( ! lineMaterial ) {
-
-				lineMaterial = new THREE.LineBasicMaterial();
-				THREE.Material.prototype.copy.call( lineMaterial, material );
-				lineMaterial.color.copy( material.color );
-
-				this.cache.add( cacheKey, lineMaterial );
-
-			}
-
-			material = lineMaterial;
-
-		}
-
-		// Clone the material if it will be modified
-		if ( useVertexTangents || useVertexColors || useFlatShading || useSkinning || useMorphTargets ) {
-
-			var cacheKey = 'ClonedMaterial:' + material.uuid + ':';
-
-			if ( material.isGLTFSpecularGlossinessMaterial ) cacheKey += 'specular-glossiness:';
-			if ( useSkinning ) cacheKey += 'skinning:';
-			if ( useVertexTangents ) cacheKey += 'vertex-tangents:';
-			if ( useVertexColors ) cacheKey += 'vertex-colors:';
-			if ( useFlatShading ) cacheKey += 'flat-shading:';
-			if ( useMorphTargets ) cacheKey += 'morph-targets:';
-			if ( useMorphNormals ) cacheKey += 'morph-normals:';
-
-			var cachedMaterial = this.cache.get( cacheKey );
-
-			if ( ! cachedMaterial ) {
-
-				cachedMaterial = material.isGLTFSpecularGlossinessMaterial
-					? extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ].cloneMaterial( material )
-					: material.clone();
-
-				if ( useSkinning ) cachedMaterial.skinning = true;
-				if ( useVertexTangents ) cachedMaterial.vertexTangents = true;
-				if ( useVertexColors ) cachedMaterial.vertexColors = THREE.VertexColors;
-				if ( useFlatShading ) cachedMaterial.flatShading = true;
-				if ( useMorphTargets ) cachedMaterial.morphTargets = true;
-				if ( useMorphNormals ) cachedMaterial.morphNormals = true;
-
-				this.cache.add( cacheKey, cachedMaterial );
-
-			}
-
-			material = cachedMaterial;
-
-		}
-
-		// workarounds for mesh and geometry
-
-		if ( material.aoMap && geometry.attributes.uv2 === undefined && geometry.attributes.uv !== undefined ) {
-
-			console.log( 'THREE.GLTFLoader: Duplicating UVs to support aoMap.' );
-			geometry.setAttribute( 'uv2', new THREE.BufferAttribute( geometry.attributes.uv.array, 2 ) );
-
-		}
-
-		if ( material.isGLTFSpecularGlossinessMaterial ) {
-
-			// for GLTFSpecularGlossinessMaterial(ShaderMaterial) uniforms runtime update
-			mesh.onBeforeRender = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ].refreshUniforms;
-
-		}
-
-		mesh.material = material;
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
-	 * @param {number} materialIndex
-	 * @return {Promise<THREE.Material>}
-	 */
-	GLTFParser.prototype.loadMaterial = function ( materialIndex ) {
-
-		var parser = this;
-		var json = this.json;
-		var extensions = this.extensions;
-		var materialDef = json.materials[ materialIndex ];
-
-		var materialType;
-		var materialParams = {};
-		var materialExtensions = materialDef.extensions || {};
-
-		var pending = [];
-
-		if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ] ) {
-
-			var sgExtension = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ];
-			materialType = sgExtension.getMaterialType();
-			pending.push( sgExtension.extendParams( materialParams, materialDef, parser ) );
-
-		} else if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ] ) {
-
-			var kmuExtension = extensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ];
-			materialType = kmuExtension.getMaterialType();
-			pending.push( kmuExtension.extendParams( materialParams, materialDef, parser ) );
-
-		} else {
-
-			// Specification:
-			// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#metallic-roughness-material
-
-			materialType = THREE.MeshStandardMaterial;
-
-			var metallicRoughness = materialDef.pbrMetallicRoughness || {};
-
-			materialParams.color = new THREE.Color( 1.0, 1.0, 1.0 );
-			materialParams.opacity = 1.0;
-
-			if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
-
-				var array = metallicRoughness.baseColorFactor;
-
-				materialParams.color.fromArray( array );
-				materialParams.opacity = array[ 3 ];
-
-			}
-
-			if ( metallicRoughness.baseColorTexture !== undefined ) {
-
-				pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture ) );
-
-			}
-
-			materialParams.metalness = metallicRoughness.metallicFactor !== undefined ? metallicRoughness.metallicFactor : 1.0;
-			materialParams.roughness = metallicRoughness.roughnessFactor !== undefined ? metallicRoughness.roughnessFactor : 1.0;
-
-			if ( metallicRoughness.metallicRoughnessTexture !== undefined ) {
-
-				pending.push( parser.assignTexture( materialParams, 'metalnessMap', metallicRoughness.metallicRoughnessTexture ) );
-				pending.push( parser.assignTexture( materialParams, 'roughnessMap', metallicRoughness.metallicRoughnessTexture ) );
-
-			}
-
-		}
-
-		if ( materialDef.doubleSided === true ) {
-
-			materialParams.side = THREE.DoubleSide;
-
-		}
-
-		var alphaMode = materialDef.alphaMode || ALPHA_MODES.OPAQUE;
-
-		if ( alphaMode === ALPHA_MODES.BLEND ) {
-
-			materialParams.transparent = true;
-
-		} else {
-
-			materialParams.transparent = false;
-
-			if ( alphaMode === ALPHA_MODES.MASK ) {
-
-				materialParams.alphaTest = materialDef.alphaCutoff !== undefined ? materialDef.alphaCutoff : 0.5;
-
-			}
-
-		}
-
-		if ( materialDef.normalTexture !== undefined && materialType !== THREE.MeshBasicMaterial ) {
-
-			pending.push( parser.assignTexture( materialParams, 'normalMap', materialDef.normalTexture ) );
-
-			materialParams.normalScale = new THREE.Vector2( 1, 1 );
-
-			if ( materialDef.normalTexture.scale !== undefined ) {
-
-				materialParams.normalScale.set( materialDef.normalTexture.scale, materialDef.normalTexture.scale );
-
-			}
-
-		}
-
-		if ( materialDef.occlusionTexture !== undefined && materialType !== THREE.MeshBasicMaterial ) {
-
-			pending.push( parser.assignTexture( materialParams, 'aoMap', materialDef.occlusionTexture ) );
-
-			if ( materialDef.occlusionTexture.strength !== undefined ) {
-
-				materialParams.aoMapIntensity = materialDef.occlusionTexture.strength;
-
-			}
-
-		}
-
-		if ( materialDef.emissiveFactor !== undefined && materialType !== THREE.MeshBasicMaterial ) {
-
-			materialParams.emissive = new THREE.Color().fromArray( materialDef.emissiveFactor );
-
-		}
-
-		if ( materialDef.emissiveTexture !== undefined && materialType !== THREE.MeshBasicMaterial ) {
-
-			pending.push( parser.assignTexture( materialParams, 'emissiveMap', materialDef.emissiveTexture ) );
-
-		}
-
-		return Promise.all( pending ).then( function () {
-
-			var material;
-
-			if ( materialType === THREE.ShaderMaterial ) {
-
-				material = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ].createMaterial( materialParams );
-
-			} else {
-
-				material = new materialType( materialParams );
-
-			}
-
-			if ( materialDef.name !== undefined ) material.name = materialDef.name;
-
-			// baseColorTexture, emissiveTexture, and specularGlossinessTexture use sRGB encoding.
-			if ( material.map ) material.map.encoding = THREE.sRGBEncoding;
-			if ( material.emissiveMap ) material.emissiveMap.encoding = THREE.sRGBEncoding;
-			if ( material.specularMap ) material.specularMap.encoding = THREE.sRGBEncoding;
-
-			assignExtrasToUserData( material, materialDef );
-
-			if ( materialDef.extensions ) addUnknownExtensionsToUserData( extensions, material, materialDef );
-
-			return material;
-
-		} );
-
-	};
-
-	/**
-	 * @param {THREE.BufferGeometry} geometry
-	 * @param {GLTF.Primitive} primitiveDef
-	 * @param {GLTFParser} parser
-	 */
-	function computeBounds( geometry, primitiveDef, parser ) {
-
-		var attributes = primitiveDef.attributes;
-
-		var box = new THREE.Box3();
-
-		if ( attributes.POSITION !== undefined ) {
-
-			var accessor = parser.json.accessors[ attributes.POSITION ];
-			var min = accessor.min;
-			var max = accessor.max;
-
-			box.set(
-				new THREE.Vector3( min[ 0 ], min[ 1 ], min[ 2 ] ),
-				new THREE.Vector3( max[ 0 ], max[ 1 ], max[ 2 ] ) );
-
-		} else {
-
-			return;
-
-		}
-
-		var targets = primitiveDef.targets;
-
-		if ( targets !== undefined ) {
-
-			var vector = new THREE.Vector3();
-
-			for ( var i = 0, il = targets.length; i < il; i ++ ) {
-
-				var target = targets[ i ];
-
-				if ( target.POSITION !== undefined ) {
-
-					var accessor = parser.json.accessors[ target.POSITION ];
-					var min = accessor.min;
-					var max = accessor.max;
-
-					// we need to get max of absolute components because target weight is [-1,1]
-					vector.setX( Math.max( Math.abs( min[ 0 ] ), Math.abs( max[ 0 ] ) ) );
-					vector.setY( Math.max( Math.abs( min[ 1 ] ), Math.abs( max[ 1 ] ) ) );
-					vector.setZ( Math.max( Math.abs( min[ 2 ] ), Math.abs( max[ 2 ] ) ) );
-
-					box.expandByVector( vector );
-
-				}
-
-			}
-
-		}
-
-		geometry.boundingBox = box;
-
-		var sphere = new THREE.Sphere();
-
-		box.getCenter( sphere.center );
-		sphere.radius = box.min.distanceTo( box.max ) / 2;
-
-		geometry.boundingSphere = sphere;
-
-	}
-
-	/**
-	 * @param {THREE.BufferGeometry} geometry
-	 * @param {GLTF.Primitive} primitiveDef
-	 * @param {GLTFParser} parser
-	 * @return {Promise<THREE.BufferGeometry>}
-	 */
-	function addPrimitiveAttributes( geometry, primitiveDef, parser ) {
-
-		var attributes = primitiveDef.attributes;
-
-		var pending = [];
-
-		function assignAttributeAccessor( accessorIndex, attributeName ) {
-
-			return parser.getDependency( 'accessor', accessorIndex )
-				.then( function ( accessor ) {
-
-					geometry.setAttribute( attributeName, accessor );
-
-				} );
-
-		}
-
-		for ( var gltfAttributeName in attributes ) {
-
-			var threeAttributeName = ATTRIBUTES[ gltfAttributeName ] || gltfAttributeName.toLowerCase();
-
-			// Skip attributes already provided by e.g. Draco extension.
-			if ( threeAttributeName in geometry.attributes ) continue;
-
-			pending.push( assignAttributeAccessor( attributes[ gltfAttributeName ], threeAttributeName ) );
-
-		}
-
-		if ( primitiveDef.indices !== undefined && ! geometry.index ) {
-
-			var accessor = parser.getDependency( 'accessor', primitiveDef.indices ).then( function ( accessor ) {
-
-				geometry.setIndex( accessor );
-
-			} );
-
-			pending.push( accessor );
-
-		}
-
-		assignExtrasToUserData( geometry, primitiveDef );
-
-		computeBounds( geometry, primitiveDef, parser );
-
-		return Promise.all( pending ).then( function () {
-
-			return primitiveDef.targets !== undefined
-				? addMorphTargets( geometry, primitiveDef.targets, parser )
-				: geometry;
-
-		} );
-
-	}
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
-	 *
-	 * Creates BufferGeometries from primitives.
-	 *
-	 * @param {Array<GLTF.Primitive>} primitives
-	 * @return {Promise<Array<THREE.BufferGeometry>>}
-	 */
-	GLTFParser.prototype.loadGeometries = function ( primitives ) {
-
-		var parser = this;
-		var extensions = this.extensions;
-		var cache = this.primitiveCache;
-
-		function createDracoPrimitive( primitive ) {
-
-			return extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ]
-				.decodePrimitive( primitive, parser )
-				.then( function ( geometry ) {
-
-					return addPrimitiveAttributes( geometry, primitive, parser );
-
-				} );
-
-		}
-
-		var pending = [];
-
-		for ( var i = 0, il = primitives.length; i < il; i ++ ) {
-
-			var primitive = primitives[ i ];
-			var cacheKey = createPrimitiveKey( primitive );
-
-			// See if we've already created this geometry
-			var cached = cache[ cacheKey ];
-
-			if ( cached ) {
-
-				// Use the cached geometry if it exists
-				pending.push( cached.promise );
-
-			} else {
-
-				var geometryPromise;
-
-				if ( primitive.extensions && primitive.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ] ) {
-
-					// Use DRACO geometry if available
-					geometryPromise = createDracoPrimitive( primitive );
-
-				} else {
-
-					// Otherwise create a new geometry
-					geometryPromise = addPrimitiveAttributes( new THREE.BufferGeometry(), primitive, parser );
-
-				}
-
-				// Cache this geometry
-				cache[ cacheKey ] = { primitive: primitive, promise: geometryPromise };
-
-				pending.push( geometryPromise );
-
-			}
-
-		}
-
-		return Promise.all( pending );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#meshes
-	 * @param {number} meshIndex
-	 * @return {Promise<THREE.Group|THREE.Mesh|THREE.SkinnedMesh>}
-	 */
-	GLTFParser.prototype.loadMesh = function ( meshIndex ) {
-
-		var parser = this;
-		var json = this.json;
-
-		var meshDef = json.meshes[ meshIndex ];
-		var primitives = meshDef.primitives;
-
-		var pending = [];
-
-		for ( var i = 0, il = primitives.length; i < il; i ++ ) {
-
-			var material = primitives[ i ].material === undefined
-				? createDefaultMaterial()
-				: this.getDependency( 'material', primitives[ i ].material );
-
-			pending.push( material );
-
-		}
-
-		pending.push( parser.loadGeometries( primitives ) );
-
-		return Promise.all( pending ).then( function ( results ) {
-
-			var materials = results.slice( 0, results.length - 1 );
-			var geometries = results[ results.length - 1 ];
-
-			var meshes = [];
-
-			for ( var i = 0, il = geometries.length; i < il; i ++ ) {
-
-				var geometry = geometries[ i ];
-				var primitive = primitives[ i ];
-
-				// 1. create Mesh
-
-				var mesh;
-
-				var material = materials[ i ];
-
-				if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLES ||
-					primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ||
-					primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ||
-					primitive.mode === undefined ) {
-
-					// .isSkinnedMesh isn't in glTF spec. See .markDefs()
-					mesh = meshDef.isSkinnedMesh === true
-						? new THREE.SkinnedMesh( geometry, material )
-						: new THREE.Mesh( geometry, material );
-
-					if ( mesh.isSkinnedMesh === true && ! mesh.geometry.attributes.skinWeight.normalized ) {
-
-						// we normalize floating point skin weight array to fix malformed assets (see #15319)
-						// it's important to skip this for non-float32 data since normalizeSkinWeights assumes non-normalized inputs
-						mesh.normalizeSkinWeights();
-
-					}
-
-					if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ) {
-
-						mesh.drawMode = THREE.TriangleStripDrawMode;
-
-					} else if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ) {
-
-						mesh.drawMode = THREE.TriangleFanDrawMode;
-
-					}
-
-				} else if ( primitive.mode === WEBGL_CONSTANTS.LINES ) {
-
-					mesh = new THREE.LineSegments( geometry, material );
-
-				} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_STRIP ) {
-
-					mesh = new THREE.Line( geometry, material );
-
-				} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_LOOP ) {
-
-					mesh = new THREE.LineLoop( geometry, material );
-
-				} else if ( primitive.mode === WEBGL_CONSTANTS.POINTS ) {
-
-					mesh = new THREE.Points( geometry, material );
-
-				} else {
-
-					throw new Error( 'THREE.GLTFLoader: Primitive mode unsupported: ' + primitive.mode );
-
-				}
-
-				if ( Object.keys( mesh.geometry.morphAttributes ).length > 0 ) {
-
-					updateMorphTargets( mesh, meshDef );
-
-				}
-
-				mesh.name = meshDef.name || ( 'mesh_' + meshIndex );
-
-				if ( geometries.length > 1 ) mesh.name += '_' + i;
-
-				assignExtrasToUserData( mesh, meshDef );
-
-				parser.assignFinalMaterial( mesh );
-
-				meshes.push( mesh );
-
-			}
-
-			if ( meshes.length === 1 ) {
-
-				return meshes[ 0 ];
-
-			}
-
-			var group = new THREE.Group();
-
-			for ( var i = 0, il = meshes.length; i < il; i ++ ) {
-
-				group.add( meshes[ i ] );
-
-			}
-
-			return group;
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#cameras
-	 * @param {number} cameraIndex
-	 * @return {Promise<THREE.Camera>}
-	 */
-	GLTFParser.prototype.loadCamera = function ( cameraIndex ) {
-
-		var camera;
-		var cameraDef = this.json.cameras[ cameraIndex ];
-		var params = cameraDef[ cameraDef.type ];
-
-		if ( ! params ) {
-
-			console.warn( 'THREE.GLTFLoader: Missing camera parameters.' );
-			return;
-
-		}
-
-		if ( cameraDef.type === 'perspective' ) {
-
-			camera = new THREE.PerspectiveCamera( THREE.Math.radToDeg( params.yfov ), params.aspectRatio || 1, params.znear || 1, params.zfar || 2e6 );
-
-		} else if ( cameraDef.type === 'orthographic' ) {
-
-			camera = new THREE.OrthographicCamera( params.xmag / - 2, params.xmag / 2, params.ymag / 2, params.ymag / - 2, params.znear, params.zfar );
-
-		}
-
-		if ( cameraDef.name !== undefined ) camera.name = cameraDef.name;
-
-		assignExtrasToUserData( camera, cameraDef );
-
-		return Promise.resolve( camera );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skins
-	 * @param {number} skinIndex
-	 * @return {Promise<Object>}
-	 */
-	GLTFParser.prototype.loadSkin = function ( skinIndex ) {
-
-		var skinDef = this.json.skins[ skinIndex ];
-
-		var skinEntry = { joints: skinDef.joints };
-
-		if ( skinDef.inverseBindMatrices === undefined ) {
-
-			return Promise.resolve( skinEntry );
-
-		}
-
-		return this.getDependency( 'accessor', skinDef.inverseBindMatrices ).then( function ( accessor ) {
-
-			skinEntry.inverseBindMatrices = accessor;
-
-			return skinEntry;
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#animations
-	 * @param {number} animationIndex
-	 * @return {Promise<THREE.AnimationClip>}
-	 */
-	GLTFParser.prototype.loadAnimation = function ( animationIndex ) {
-
-		var json = this.json;
-
-		var animationDef = json.animations[ animationIndex ];
-
-		var pendingNodes = [];
-		var pendingInputAccessors = [];
-		var pendingOutputAccessors = [];
-		var pendingSamplers = [];
-		var pendingTargets = [];
-
-		for ( var i = 0, il = animationDef.channels.length; i < il; i ++ ) {
-
-			var channel = animationDef.channels[ i ];
-			var sampler = animationDef.samplers[ channel.sampler ];
-			var target = channel.target;
-			var name = target.node !== undefined ? target.node : target.id; // NOTE: target.id is deprecated.
-			var input = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.input ] : sampler.input;
-			var output = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.output ] : sampler.output;
-
-			pendingNodes.push( this.getDependency( 'node', name ) );
-			pendingInputAccessors.push( this.getDependency( 'accessor', input ) );
-			pendingOutputAccessors.push( this.getDependency( 'accessor', output ) );
-			pendingSamplers.push( sampler );
-			pendingTargets.push( target );
-
-		}
-
-		return Promise.all( [
-
-			Promise.all( pendingNodes ),
-			Promise.all( pendingInputAccessors ),
-			Promise.all( pendingOutputAccessors ),
-			Promise.all( pendingSamplers ),
-			Promise.all( pendingTargets )
-
-		] ).then( function ( dependencies ) {
-
-			var nodes = dependencies[ 0 ];
-			var inputAccessors = dependencies[ 1 ];
-			var outputAccessors = dependencies[ 2 ];
-			var samplers = dependencies[ 3 ];
-			var targets = dependencies[ 4 ];
-
-			var tracks = [];
-
-			for ( var i = 0, il = nodes.length; i < il; i ++ ) {
-
-				var node = nodes[ i ];
-				var inputAccessor = inputAccessors[ i ];
-				var outputAccessor = outputAccessors[ i ];
-				var sampler = samplers[ i ];
-				var target = targets[ i ];
-
-				if ( node === undefined ) continue;
-
-				node.updateMatrix();
-				node.matrixAutoUpdate = true;
-
-				var TypedKeyframeTrack;
-
-				switch ( PATH_PROPERTIES[ target.path ] ) {
-
-					case PATH_PROPERTIES.weights:
-
-						TypedKeyframeTrack = THREE.NumberKeyframeTrack;
-						break;
-
-					case PATH_PROPERTIES.rotation:
-
-						TypedKeyframeTrack = THREE.QuaternionKeyframeTrack;
-						break;
-
-					case PATH_PROPERTIES.position:
-					case PATH_PROPERTIES.scale:
-					default:
-
-						TypedKeyframeTrack = THREE.VectorKeyframeTrack;
-						break;
-
-				}
-
-				var targetName = node.name ? node.name : node.uuid;
-
-				var interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : THREE.InterpolateLinear;
-
-				var targetNames = [];
-
-				if ( PATH_PROPERTIES[ target.path ] === PATH_PROPERTIES.weights ) {
-
-					// Node may be a THREE.Group (glTF mesh with several primitives) or a THREE.Mesh.
-					node.traverse( function ( object ) {
-
-						if ( object.isMesh === true && object.morphTargetInfluences ) {
-
-							targetNames.push( object.name ? object.name : object.uuid );
-
-						}
-
-					} );
-
-				} else {
-
-					targetNames.push( targetName );
-
-				}
-
-				var outputArray = outputAccessor.array;
-
-				if ( outputAccessor.normalized ) {
-
-					var scale;
-
-					if ( outputArray.constructor === Int8Array ) {
-
-						scale = 1 / 127;
-
-					} else if ( outputArray.constructor === Uint8Array ) {
-
-						scale = 1 / 255;
-
-					} else if ( outputArray.constructor == Int16Array ) {
-
-						scale = 1 / 32767;
-
-					} else if ( outputArray.constructor === Uint16Array ) {
-
-						scale = 1 / 65535;
-
-					} else {
-
-						throw new Error( 'THREE.GLTFLoader: Unsupported output accessor component type.' );
-
-					}
-
-					var scaled = new Float32Array( outputArray.length );
-
-					for ( var j = 0, jl = outputArray.length; j < jl; j ++ ) {
-
-						scaled[ j ] = outputArray[ j ] * scale;
-
-					}
-
-					outputArray = scaled;
-
-				}
-
-				for ( var j = 0, jl = targetNames.length; j < jl; j ++ ) {
-
-					var track = new TypedKeyframeTrack(
-						targetNames[ j ] + '.' + PATH_PROPERTIES[ target.path ],
-						inputAccessor.array,
-						outputArray,
-						interpolation
-					);
-
-					// Override interpolation with custom factory method.
-					if ( sampler.interpolation === 'CUBICSPLINE' ) {
-
-						track.createInterpolant = function InterpolantFactoryMethodGLTFCubicSpline( result ) {
-
-							// A CUBICSPLINE keyframe in glTF has three output values for each input value,
-							// representing inTangent, splineVertex, and outTangent. As a result, track.getValueSize()
-							// must be divided by three to get the interpolant's sampleSize argument.
-
-							return new GLTFCubicSplineInterpolant( this.times, this.values, this.getValueSize() / 3, result );
-
-						};
-
-						// Mark as CUBICSPLINE. `track.getInterpolation()` doesn't support custom interpolants.
-						track.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline = true;
-
-					}
-
-					tracks.push( track );
-
-				}
-
-			}
-
-			var name = animationDef.name !== undefined ? animationDef.name : 'animation_' + animationIndex;
-
-			return new THREE.AnimationClip( name, undefined, tracks );
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
-	 * @param {number} nodeIndex
-	 * @return {Promise<THREE.Object3D>}
-	 */
-	GLTFParser.prototype.loadNode = function ( nodeIndex ) {
-
-		var json = this.json;
-		var extensions = this.extensions;
-		var parser = this;
-
-		var meshReferences = json.meshReferences;
-		var meshUses = json.meshUses;
-
-		var nodeDef = json.nodes[ nodeIndex ];
-
-		return ( function () {
-
-			var pending = [];
-
-			if ( nodeDef.mesh !== undefined ) {
-
-				pending.push( parser.getDependency( 'mesh', nodeDef.mesh ).then( function ( mesh ) {
-
-					var node;
-
-					if ( meshReferences[ nodeDef.mesh ] > 1 ) {
-
-						var instanceNum = meshUses[ nodeDef.mesh ] ++;
-
-						node = mesh.clone();
-						node.name += '_instance_' + instanceNum;
-
-						// onBeforeRender copy for Specular-Glossiness
-						node.onBeforeRender = mesh.onBeforeRender;
-
-						for ( var i = 0, il = node.children.length; i < il; i ++ ) {
-
-							node.children[ i ].name += '_instance_' + instanceNum;
-							node.children[ i ].onBeforeRender = mesh.children[ i ].onBeforeRender;
-
-						}
-
-					} else {
-
-						node = mesh;
-
-					}
-
-					// if weights are provided on the node, override weights on the mesh.
-					if ( nodeDef.weights !== undefined ) {
-
-						node.traverse( function ( o ) {
-
-							if ( ! o.isMesh ) return;
-
-							for ( var i = 0, il = nodeDef.weights.length; i < il; i ++ ) {
-
-								o.morphTargetInfluences[ i ] = nodeDef.weights[ i ];
-
-							}
-
-						} );
-
-					}
-
-					return node;
-
-				} ) );
-
-			}
-
-			if ( nodeDef.camera !== undefined ) {
-
-				pending.push( parser.getDependency( 'camera', nodeDef.camera ) );
-
-			}
-
-			if ( nodeDef.extensions
-				&& nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ]
-				&& nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].light !== undefined ) {
-
-				pending.push( parser.getDependency( 'light', nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].light ) );
-
-			}
-
-			return Promise.all( pending );
-
-		}() ).then( function ( objects ) {
-
-			var node;
-
-			// .isBone isn't in glTF spec. See .markDefs
-			if ( nodeDef.isBone === true ) {
-
-				node = new THREE.Bone();
-
-			} else if ( objects.length > 1 ) {
-
-				node = new THREE.Group();
-
-			} else if ( objects.length === 1 ) {
-
-				node = objects[ 0 ];
-
-			} else {
-
-				node = new THREE.Object3D();
-
-			}
-
-			if ( node !== objects[ 0 ] ) {
-
-				for ( var i = 0, il = objects.length; i < il; i ++ ) {
-
-					node.add( objects[ i ] );
-
-				}
-
-			}
-
-			if ( nodeDef.name !== undefined ) {
-
-				node.userData.name = nodeDef.name;
-				node.name = THREE.PropertyBinding.sanitizeNodeName( nodeDef.name );
-
-			}
-
-			assignExtrasToUserData( node, nodeDef );
-
-			if ( nodeDef.extensions ) addUnknownExtensionsToUserData( extensions, node, nodeDef );
-
-			if ( nodeDef.matrix !== undefined ) {
-
-				var matrix = new THREE.Matrix4();
-				matrix.fromArray( nodeDef.matrix );
-				node.applyMatrix( matrix );
-
-			} else {
-
-				if ( nodeDef.translation !== undefined ) {
-
-					node.position.fromArray( nodeDef.translation );
-
-				}
-
-				if ( nodeDef.rotation !== undefined ) {
-
-					node.quaternion.fromArray( nodeDef.rotation );
-
-				}
-
-				if ( nodeDef.scale !== undefined ) {
-
-					node.scale.fromArray( nodeDef.scale );
-
-				}
-
-			}
-
-			return node;
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
-	 * @param {number} sceneIndex
-	 * @return {Promise<THREE.Scene>}
-	 */
-	GLTFParser.prototype.loadScene = function () {
-
-		// scene node hierachy builder
-
-		function buildNodeHierachy( nodeId, parentObject, json, parser ) {
-
-			var nodeDef = json.nodes[ nodeId ];
-
-			return parser.getDependency( 'node', nodeId ).then( function ( node ) {
-
-				if ( nodeDef.skin === undefined ) return node;
-
-				// build skeleton here as well
-
-				var skinEntry;
-
-				return parser.getDependency( 'skin', nodeDef.skin ).then( function ( skin ) {
-
-					skinEntry = skin;
-
-					var pendingJoints = [];
-
-					for ( var i = 0, il = skinEntry.joints.length; i < il; i ++ ) {
-
-						pendingJoints.push( parser.getDependency( 'node', skinEntry.joints[ i ] ) );
-
-					}
-
-					return Promise.all( pendingJoints );
-
-				} ).then( function ( jointNodes ) {
-
-					node.traverse( function ( mesh ) {
-
-						if ( ! mesh.isMesh ) return;
-
-						var bones = [];
-						var boneInverses = [];
-
-						for ( var j = 0, jl = jointNodes.length; j < jl; j ++ ) {
-
-							var jointNode = jointNodes[ j ];
-
-							if ( jointNode ) {
-
-								bones.push( jointNode );
-
-								var mat = new THREE.Matrix4();
-
-								if ( skinEntry.inverseBindMatrices !== undefined ) {
-
-									mat.fromArray( skinEntry.inverseBindMatrices.array, j * 16 );
-
-								}
-
-								boneInverses.push( mat );
-
-							} else {
-
-								console.warn( 'THREE.GLTFLoader: Joint "%s" could not be found.', skinEntry.joints[ j ] );
-
-							}
-
-						}
-
-						mesh.bind( new THREE.Skeleton( bones, boneInverses ), mesh.matrixWorld );
-
-					} );
-
-					return node;
-
-				} );
-
-			} ).then( function ( node ) {
-
-				// build node hierachy
-
-				parentObject.add( node );
-
-				var pending = [];
-
-				if ( nodeDef.children ) {
-
-					var children = nodeDef.children;
-
-					for ( var i = 0, il = children.length; i < il; i ++ ) {
-
-						var child = children[ i ];
-						pending.push( buildNodeHierachy( child, node, json, parser ) );
-
-					}
-
-				}
-
-				return Promise.all( pending );
-
-			} );
-
-		}
-
-		return function loadScene( sceneIndex ) {
-
-			var json = this.json;
-			var extensions = this.extensions;
-			var sceneDef = this.json.scenes[ sceneIndex ];
-			var parser = this;
-
-			var scene = new THREE.Scene();
-			if ( sceneDef.name !== undefined ) scene.name = sceneDef.name;
-
-			assignExtrasToUserData( scene, sceneDef );
-
-			if ( sceneDef.extensions ) addUnknownExtensionsToUserData( extensions, scene, sceneDef );
-
-			var nodeIds = sceneDef.nodes || [];
-
-			var pending = [];
-
-			for ( var i = 0, il = nodeIds.length; i < il; i ++ ) {
-
-				pending.push( buildNodeHierachy( nodeIds[ i ], scene, json, parser ) );
-
-			}
-
-			return Promise.all( pending ).then( function () {
-
-				return scene;
-
-			} );
-
-		};
-
-	}();
-
-	return GLTFLoader;
-
-} )();

3rdparty/meshoptimizer/demo/ansi.c

@@ -1,2 +0,0 @@
-/* This file makes sure the library can be used by C89 code */
-#include "../src/meshoptimizer.h"

3rdparty/meshoptimizer/demo/babylon.MESHOPT_compression.js

@@ -1,50 +0,0 @@
-/* Babylon.js extension for MESHOPT_compression; requires Babylon.js 4.1 */
-var NAME = "MESHOPT_compression";
-var MESHOPT_compression = /** @class */ (function () {
-    /** @hidden */
-    function MESHOPT_compression(loader, decoder) {
-        /** The name of this extension. */
-        this.name = NAME;
-        /** Defines whether this extension is enabled. */
-        this.enabled = true;
-        this._loader = loader;
-        this._decoder = decoder;
-    }
-    /** @hidden */
-    MESHOPT_compression.prototype.dispose = function () {
-        delete this._loader;
-    };
-    /** @hidden */
-    MESHOPT_compression.prototype.loadBufferViewAsync = function (context, bufferView) {
-        if (bufferView.extensions && bufferView.extensions[NAME]) {
-            var extensionDef = bufferView.extensions[NAME];
-            if (extensionDef._decoded) {
-                return extensionDef._decoded;
-            }
-            var view = this._loader.loadBufferViewAsync(context, extensionDef);
-            var decoder = this._decoder;
-            extensionDef._decoded = Promise.all([view, decoder.ready]).then(function (res) {
-                var source = res[0];
-                var count = extensionDef.count;
-                var stride = extensionDef.byteStride;
-                var result = new Uint8Array(new ArrayBuffer(count * stride));
-                switch (extensionDef.mode) {
-                    case 0:
-                        decoder.decodeVertexBuffer(result, count, stride, source);
-                        break;
-                    case 1:
-                        decoder.decodeIndexBuffer(result, count, stride, source);
-                        break;
-                    default:
-                        throw new Error("GLTFLoader: Unrecognized meshopt compression mode.");
-                }
-                return Promise.resolve(result);
-            });
-            return extensionDef._decoded;
-        } else {
-            return null;
-        }
-    };
-    return MESHOPT_compression;
-}());
-/* BABYLON.GLTF2.GLTFLoader.RegisterExtension("MESHOPT_compression", (loader) => new MESHOPT_compression(loader, MeshoptDecoder)); */

3rdparty/meshoptimizer/demo/demo.html

@@ -1,68 +0,0 @@
-<!DOCTYPE html>
-<html>
-    <head>
-        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-
-        <title>meshoptimizer - demo</title>
-
-        <script src="https://preview.babylonjs.com/babylon.js"></script>
-        <script src="https://preview.babylonjs.com/loaders/babylon.glTF2FileLoader.js"></script>
-
-        <script src="babylon.MESHOPT_compression.js"></script>
-        <script src="../js/meshopt_decoder.js"></script>
-
-        <style>
-            html, body {
-                overflow: hidden;
-                width: 100%;
-                height: 100%;
-                margin: 0;
-                padding: 0;
-            }
-
-            #renderCanvas {
-                width: 100%;
-                height: 100%;
-                touch-action: none;
-            }
-        </style>
-    </head>
-<body>
-    <canvas id="renderCanvas"></canvas>
-    <script>
-        var canvas = document.getElementById("renderCanvas");
-
-        BABYLON.GLTF2.GLTFLoader.RegisterExtension("MESHOPT_compression", (loader) => new MESHOPT_compression(loader, MeshoptDecoder));
-
-        var createScene = function () {
-            var scene = new BABYLON.Scene(engine);
-
-            var camera = new BABYLON.ArcRotateCamera("Camera", 0, 0.8, 10, BABYLON.Vector3.Zero(), scene);
-            camera.attachControl(canvas, false);
-
-            BABYLON.SceneLoader.Append("", "pirate.glb", scene, function (newMeshes) {
-                scene.activeCamera = null;
-                scene.createDefaultCameraOrLight(true);
-                scene.activeCamera.attachControl(canvas, false);
-                scene.activeCamera.alpha = Math.PI / 2;
-            });
-
-            return scene;
-        }
-
-        var engine = new BABYLON.Engine(canvas, true, { preserveDrawingBuffer: true, stencil: true });
-        var scene = createScene();
-
-        engine.runRenderLoop(function () {
-            if (scene) {
-                scene.render();
-            }
-        });
-
-        // Resize
-        window.addEventListener("resize", function () {
-            engine.resize();
-        });
-    </script>
-</body>
-</html>

3rdparty/meshoptimizer/demo/index.html

@@ -1,129 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-	<head>
-		<title>meshoptimizer - demo</title>
-		<meta charset="utf-8">
-		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
-		<style>
-			body {
-				font-family: Monospace;
-				background-color: #000;
-				color: #fff;
-				margin: 0px;
-				overflow: hidden;
-			}
-			#info {
-				color: #fff;
-				position: absolute;
-				top: 10px;
-				width: 100%;
-				text-align: center;
-				z-index: 100;
-				display:block;
-			}
-			#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
-		</style>
-	</head>
-
-	<body>
-		<div id="info">
-		<a href="https://github.com/zeux/meshoptimizer" target="_blank" rel="noopener">meshoptimizer</a>
-		</div>
-
-		<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/three.min.js"></script>
-
-		<script src="../js/meshopt_decoder.js"></script>
-		<script src="GLTFLoader.js"></script>
-
-		<script>
-			var container;
-
-			var camera, scene, renderer, mixer, clock;
-
-			var windowHalfX = window.innerWidth / 2;
-			var windowHalfY = window.innerHeight / 2;
-
-			init();
-			animate();
-
-			function init()
-			{
-				container = document.createElement('div');
-				document.body.appendChild(container);
-
-				camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.01, 100);
-				camera.position.y = 1.0;
-				camera.position.z = 3.0;
-
-				scene = new THREE.Scene();
-				scene.background = new THREE.Color(0x300a24);
-
-				var ambientLight = new THREE.AmbientLight(0xcccccc, 0.3);
-				scene.add(ambientLight);
-
-				var pointLight = new THREE.PointLight(0xffffff, 0.8);
-				pointLight.position.set(3, 3, 0);
-				camera.add(pointLight);
-				scene.add(camera);
-
-				var onProgress = function (xhr) {};
-				var onError = function (e) {
-					console.log(e);
-				};
-
-				var loader = new THREE.GLTFLoader();
-				loader.setMeshoptDecoder(MeshoptDecoder);
-				loader.load('pirate.glb', function (gltf) {
-					var bbox = new THREE.Box3().setFromObject(gltf.scene);
-					var scale = 2 / (bbox.max.y - bbox.min.y);
-
-					gltf.scene.scale.set(scale, scale, scale);
-					gltf.scene.position.set(0, 0, 0);
-
-					scene.add(gltf.scene);
-
-					mixer = new THREE.AnimationMixer(gltf.scene);
-
-					if (gltf.animations.length) {
-						mixer.clipAction(gltf.animations[gltf.animations.length - 1]).play();
-					}
-				}, onProgress, onError);
-
-				renderer = new THREE.WebGLRenderer();
-				renderer.setPixelRatio(window.devicePixelRatio);
-				renderer.setSize(window.innerWidth, window.innerHeight);
-				container.appendChild(renderer.domElement);
-
-				window.addEventListener('resize', onWindowResize, false);
-
-				clock = new THREE.Clock();
-			}
-
-			function onWindowResize()
-			{
-				windowHalfX = window.innerWidth / 2;
-				windowHalfY = window.innerHeight / 2;
-
-				camera.aspect = window.innerWidth / window.innerHeight;
-				camera.updateProjectionMatrix();
-
-				renderer.setSize(window.innerWidth, window.innerHeight);
-			}
-
-			function animate()
-			{
-				if (mixer) {
-					mixer.update(clock.getDelta());
-				}
-
-				requestAnimationFrame(animate);
-				render();
-			}
-
-			function render()
-			{
-				renderer.render(scene, camera);
-			}
-		</script>
-	</body>
-</html>

3rdparty/meshoptimizer/demo/main.cpp

@@ -1,1055 +0,0 @@
-#include "../src/meshoptimizer.h"
-
-#include <assert.h>
-#include <math.h>
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-
-#include <vector>
-
-#include "../tools/fast_obj.h"
-#include "miniz.h"
-
-// This file uses assert() to verify algorithm correctness
-#undef NDEBUG
-#include <assert.h>
-
-#if defined(__linux__)
-double timestamp()
-{
-	timespec ts;
-	clock_gettime(CLOCK_MONOTONIC, &ts);
-	return double(ts.tv_sec) + 1e-9 * double(ts.tv_nsec);
-}
-#elif defined(_WIN32)
-struct LARGE_INTEGER
-{
-	__int64 QuadPart;
-};
-extern "C" __declspec(dllimport) int __stdcall QueryPerformanceCounter(LARGE_INTEGER* lpPerformanceCount);
-extern "C" __declspec(dllimport) int __stdcall QueryPerformanceFrequency(LARGE_INTEGER* lpFrequency);
-
-double timestamp()
-{
-	LARGE_INTEGER freq, counter;
-	QueryPerformanceFrequency(&freq);
-	QueryPerformanceCounter(&counter);
-	return double(counter.QuadPart) / double(freq.QuadPart);
-}
-#else
-double timestamp()
-{
-	return double(clock()) / double(CLOCKS_PER_SEC);
-}
-#endif
-
-const size_t kCacheSize = 16;
-
-struct Vertex
-{
-	float px, py, pz;
-	float nx, ny, nz;
-	float tx, ty;
-};
-
-struct Mesh
-{
-	std::vector<Vertex> vertices;
-	std::vector<unsigned int> indices;
-};
-
-union Triangle {
-	Vertex v[3];
-	char data[sizeof(Vertex) * 3];
-};
-
-Mesh parseObj(const char* path, double& reindex)
-{
-	fastObjMesh* obj = fast_obj_read(path);
-	if (!obj)
-	{
-		printf("Error loading %s: file not found\n", path);
-		return Mesh();
-	}
-
-	size_t total_indices = 0;
-
-	for (unsigned int i = 0; i < obj->face_count; ++i)
-		total_indices += 3 * (obj->face_vertices[i] - 2);
-
-	std::vector<Vertex> vertices(total_indices);
-
-	size_t vertex_offset = 0;
-	size_t index_offset = 0;
-
-	for (unsigned int i = 0; i < obj->face_count; ++i)
-	{
-		for (unsigned int j = 0; j < obj->face_vertices[i]; ++j)
-		{
-			fastObjIndex gi = obj->indices[index_offset + j];
-
-			Vertex v =
-			    {
-			        obj->positions[gi.p * 3 + 0],
-			        obj->positions[gi.p * 3 + 1],
-			        obj->positions[gi.p * 3 + 2],
-			        obj->normals[gi.n * 3 + 0],
-			        obj->normals[gi.n * 3 + 1],
-			        obj->normals[gi.n * 3 + 2],
-			        obj->texcoords[gi.t * 2 + 0],
-			        obj->texcoords[gi.t * 2 + 1],
-			    };
-
-			// triangulate polygon on the fly; offset-3 is always the first polygon vertex
-			if (j >= 3)
-			{
-				vertices[vertex_offset + 0] = vertices[vertex_offset - 3];
-				vertices[vertex_offset + 1] = vertices[vertex_offset - 1];
-				vertex_offset += 2;
-			}
-
-			vertices[vertex_offset] = v;
-			vertex_offset++;
-		}
-
-		index_offset += obj->face_vertices[i];
-	}
-
-	fast_obj_destroy(obj);
-
-	reindex = timestamp();
-
-	Mesh result;
-
-	std::vector<unsigned int> remap(total_indices);
-
-	size_t total_vertices = meshopt_generateVertexRemap(&remap[0], NULL, total_indices, &vertices[0], total_indices, sizeof(Vertex));
-
-	result.indices.resize(total_indices);
-	meshopt_remapIndexBuffer(&result.indices[0], NULL, total_indices, &remap[0]);
-
-	result.vertices.resize(total_vertices);
-	meshopt_remapVertexBuffer(&result.vertices[0], &vertices[0], total_indices, sizeof(Vertex), &remap[0]);
-
-	return result;
-}
-
-bool isMeshValid(const Mesh& mesh)
-{
-	size_t index_count = mesh.indices.size();
-	size_t vertex_count = mesh.vertices.size();
-
-	if (index_count % 3 != 0)
-		return false;
-
-	const unsigned int* indices = &mesh.indices[0];
-
-	for (size_t i = 0; i < index_count; ++i)
-		if (indices[i] >= vertex_count)
-			return false;
-
-	return true;
-}
-
-bool rotateTriangle(Triangle& t)
-{
-	int c01 = memcmp(&t.v[0], &t.v[1], sizeof(Vertex));
-	int c02 = memcmp(&t.v[0], &t.v[2], sizeof(Vertex));
-	int c12 = memcmp(&t.v[1], &t.v[2], sizeof(Vertex));
-
-	if (c12 < 0 && c01 > 0)
-	{
-		// 1 is minimum, rotate 012 => 120
-		Vertex tv = t.v[0];
-		t.v[0] = t.v[1], t.v[1] = t.v[2], t.v[2] = tv;
-	}
-	else if (c02 > 0 && c12 > 0)
-	{
-		// 2 is minimum, rotate 012 => 201
-		Vertex tv = t.v[2];
-		t.v[2] = t.v[1], t.v[1] = t.v[0], t.v[0] = tv;
-	}
-
-	return c01 != 0 && c02 != 0 && c12 != 0;
-}
-
-unsigned int hashRange(const char* key, size_t len)
-{
-	// MurmurHash2
-	const unsigned int m = 0x5bd1e995;
-	const int r = 24;
-
-	unsigned int h = 0;
-
-	while (len >= 4)
-	{
-		unsigned int k = *reinterpret_cast<const unsigned int*>(key);
-
-		k *= m;
-		k ^= k >> r;
-		k *= m;
-
-		h *= m;
-		h ^= k;
-
-		key += 4;
-		len -= 4;
-	}
-
-	return h;
-}
-
-unsigned int hashMesh(const Mesh& mesh)
-{
-	size_t triangle_count = mesh.indices.size() / 3;
-
-	const Vertex* vertices = &mesh.vertices[0];
-	const unsigned int* indices = &mesh.indices[0];
-
-	unsigned int h1 = 0;
-	unsigned int h2 = 0;
-
-	for (size_t i = 0; i < triangle_count; ++i)
-	{
-		Triangle t;
-		t.v[0] = vertices[indices[i * 3 + 0]];
-		t.v[1] = vertices[indices[i * 3 + 1]];
-		t.v[2] = vertices[indices[i * 3 + 2]];
-
-		// skip degenerate triangles since some algorithms don't preserve them
-		if (rotateTriangle(t))
-		{
-			unsigned int hash = hashRange(t.data, sizeof(t.data));
-
-			h1 ^= hash;
-			h2 += hash;
-		}
-	}
-
-	return h1 * 0x5bd1e995 + h2;
-}
-
-void optNone(Mesh& mesh)
-{
-	(void)mesh;
-}
-
-void optRandomShuffle(Mesh& mesh)
-{
-	size_t triangle_count = mesh.indices.size() / 3;
-
-	unsigned int* indices = &mesh.indices[0];
-
-	unsigned int rng = 0;
-
-	for (size_t i = triangle_count - 1; i > 0; --i)
-	{
-		// Fisher-Yates shuffle
-		size_t j = rng % (i + 1);
-
-		unsigned int t;
-		t = indices[3 * j + 0], indices[3 * j + 0] = indices[3 * i + 0], indices[3 * i + 0] = t;
-		t = indices[3 * j + 1], indices[3 * j + 1] = indices[3 * i + 1], indices[3 * i + 1] = t;
-		t = indices[3 * j + 2], indices[3 * j + 2] = indices[3 * i + 2], indices[3 * i + 2] = t;
-
-		// LCG RNG, constants from Numerical Recipes
-		rng = rng * 1664525 + 1013904223;
-	}
-}
-
-void optCache(Mesh& mesh)
-{
-	meshopt_optimizeVertexCache(&mesh.indices[0], &mesh.indices[0], mesh.indices.size(), mesh.vertices.size());
-}
-
-void optCacheFifo(Mesh& mesh)
-{
-	meshopt_optimizeVertexCacheFifo(&mesh.indices[0], &mesh.indices[0], mesh.indices.size(), mesh.vertices.size(), kCacheSize);
-}
-
-void optOverdraw(Mesh& mesh)
-{
-	// use worst-case ACMR threshold so that overdraw optimizer can sort *all* triangles
-	// warning: this significantly deteriorates the vertex cache efficiency so it is not advised; look at optComplete for the recommended method
-	const float kThreshold = 3.f;
-	meshopt_optimizeOverdraw(&mesh.indices[0], &mesh.indices[0], mesh.indices.size(), &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex), kThreshold);
-}
-
-void optFetch(Mesh& mesh)
-{
-	meshopt_optimizeVertexFetch(&mesh.vertices[0], &mesh.indices[0], mesh.indices.size(), &mesh.vertices[0], mesh.vertices.size(), sizeof(Vertex));
-}
-
-void optFetchRemap(Mesh& mesh)
-{
-	// this produces results equivalent to optFetch, but can be used to remap multiple vertex streams
-	std::vector<unsigned int> remap(mesh.vertices.size());
-	meshopt_optimizeVertexFetchRemap(&remap[0], &mesh.indices[0], mesh.indices.size(), mesh.vertices.size());
-
-	meshopt_remapIndexBuffer(&mesh.indices[0], &mesh.indices[0], mesh.indices.size(), &remap[0]);
-	meshopt_remapVertexBuffer(&mesh.vertices[0], &mesh.vertices[0], mesh.vertices.size(), sizeof(Vertex), &remap[0]);
-}
-
-void optComplete(Mesh& mesh)
-{
-	// vertex cache optimization should go first as it provides starting order for overdraw
-	meshopt_optimizeVertexCache(&mesh.indices[0], &mesh.indices[0], mesh.indices.size(), mesh.vertices.size());
-
-	// reorder indices for overdraw, balancing overdraw and vertex cache efficiency
-	const float kThreshold = 1.01f; // allow up to 1% worse ACMR to get more reordering opportunities for overdraw
-	meshopt_optimizeOverdraw(&mesh.indices[0], &mesh.indices[0], mesh.indices.size(), &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex), kThreshold);
-
-	// vertex fetch optimization should go last as it depends on the final index order
-	meshopt_optimizeVertexFetch(&mesh.vertices[0], &mesh.indices[0], mesh.indices.size(), &mesh.vertices[0], mesh.vertices.size(), sizeof(Vertex));
-}
-
-struct PackedVertex
-{
-	unsigned short px, py, pz;
-	unsigned short pw; // padding to 4b boundary
-	signed char nx, ny, nz, nw;
-	unsigned short tx, ty;
-};
-
-void packMesh(std::vector<PackedVertex>& pv, const std::vector<Vertex>& vertices)
-{
-	for (size_t i = 0; i < vertices.size(); ++i)
-	{
-		const Vertex& vi = vertices[i];
-		PackedVertex& pvi = pv[i];
-
-		pvi.px = meshopt_quantizeHalf(vi.px);
-		pvi.py = meshopt_quantizeHalf(vi.py);
-		pvi.pz = meshopt_quantizeHalf(vi.pz);
-		pvi.pw = 0;
-
-		pvi.nx = char(meshopt_quantizeSnorm(vi.nx, 8));
-		pvi.ny = char(meshopt_quantizeSnorm(vi.ny, 8));
-		pvi.nz = char(meshopt_quantizeSnorm(vi.nz, 8));
-		pvi.nw = 0;
-
-		pvi.tx = meshopt_quantizeHalf(vi.tx);
-		pvi.ty = meshopt_quantizeHalf(vi.ty);
-	}
-}
-
-struct PackedVertexOct
-{
-	unsigned short px, py, pz;
-	signed char nu, nv; // octahedron encoded normal, aliases .pw
-	unsigned short tx, ty;
-};
-
-void packMesh(std::vector<PackedVertexOct>& pv, const std::vector<Vertex>& vertices)
-{
-	for (size_t i = 0; i < vertices.size(); ++i)
-	{
-		const Vertex& vi = vertices[i];
-		PackedVertexOct& pvi = pv[i];
-
-		pvi.px = meshopt_quantizeHalf(vi.px);
-		pvi.py = meshopt_quantizeHalf(vi.py);
-		pvi.pz = meshopt_quantizeHalf(vi.pz);
-
-		float nsum = fabsf(vi.nx) + fabsf(vi.ny) + fabsf(vi.nz);
-		float nx = vi.nx / nsum;
-		float ny = vi.ny / nsum;
-		float nz = vi.nz;
-
-		float nu = nz >= 0 ? nx : (1 - fabsf(ny)) * (nx >= 0 ? 1 : -1);
-		float nv = nz >= 0 ? ny : (1 - fabsf(nx)) * (ny >= 0 ? 1 : -1);
-
-		pvi.nu = char(meshopt_quantizeSnorm(nu, 8));
-		pvi.nv = char(meshopt_quantizeSnorm(nv, 8));
-
-		pvi.tx = meshopt_quantizeHalf(vi.tx);
-		pvi.ty = meshopt_quantizeHalf(vi.ty);
-	}
-}
-
-void simplify(const Mesh& mesh, float threshold = 0.2f)
-{
-	Mesh lod;
-
-	double start = timestamp();
-
-	size_t target_index_count = size_t(mesh.indices.size() * threshold);
-	float target_error = 1e-2f;
-
-	lod.indices.resize(mesh.indices.size()); // note: simplify needs space for index_count elements in the destination array, not target_index_count
-	lod.indices.resize(meshopt_simplify(&lod.indices[0], &mesh.indices[0], mesh.indices.size(), &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex), target_index_count, target_error));
-
-	lod.vertices.resize(lod.indices.size() < mesh.vertices.size() ? lod.indices.size() : mesh.vertices.size()); // note: this is just to reduce the cost of resize()
-	lod.vertices.resize(meshopt_optimizeVertexFetch(&lod.vertices[0], &lod.indices[0], lod.indices.size(), &mesh.vertices[0], mesh.vertices.size(), sizeof(Vertex)));
-
-	double end = timestamp();
-
-	printf("%-9s: %d triangles => %d triangles in %.2f msec\n",
-	       "Simplify",
-	       int(mesh.indices.size() / 3), int(lod.indices.size() / 3), (end - start) * 1000);
-}
-
-void simplifySloppy(const Mesh& mesh, float threshold = 0.2f)
-{
-	Mesh lod;
-
-	double start = timestamp();
-
-	size_t target_index_count = size_t(mesh.indices.size() * threshold);
-
-	lod.indices.resize(target_index_count); // note: simplifySloppy, unlike simplify, is guaranteed to output results that don't exceed the requested target_index_count
-	lod.indices.resize(meshopt_simplifySloppy(&lod.indices[0], &mesh.indices[0], mesh.indices.size(), &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex), target_index_count));
-
-	lod.vertices.resize(lod.indices.size() < mesh.vertices.size() ? lod.indices.size() : mesh.vertices.size()); // note: this is just to reduce the cost of resize()
-	lod.vertices.resize(meshopt_optimizeVertexFetch(&lod.vertices[0], &lod.indices[0], lod.indices.size(), &mesh.vertices[0], mesh.vertices.size(), sizeof(Vertex)));
-
-	double end = timestamp();
-
-	printf("%-9s: %d triangles => %d triangles in %.2f msec\n",
-	       "SimplifyS",
-	       int(mesh.indices.size() / 3), int(lod.indices.size() / 3), (end - start) * 1000);
-}
-
-void simplifyPoints(const Mesh& mesh, float threshold = 0.2f)
-{
-	double start = timestamp();
-
-	size_t target_vertex_count = size_t(mesh.vertices.size() * threshold);
-
-	std::vector<unsigned int> indices(target_vertex_count);
-	indices.resize(meshopt_simplifyPoints(&indices[0], &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex), target_vertex_count));
-
-	double end = timestamp();
-
-	printf("%-9s: %d points => %d points in %.2f msec\n",
-	       "SimplifyP",
-	       int(mesh.vertices.size()), int(indices.size()), (end - start) * 1000);
-}
-
-void simplifyComplete(const Mesh& mesh)
-{
-	static const size_t lod_count = 5;
-
-	double start = timestamp();
-
-	// generate 4 LOD levels (1-4), with each subsequent LOD using 70% triangles
-	// note that each LOD uses the same (shared) vertex buffer
-	std::vector<unsigned int> lods[lod_count];
-
-	lods[0] = mesh.indices;
-
-	for (size_t i = 1; i < lod_count; ++i)
-	{
-		std::vector<unsigned int>& lod = lods[i];
-
-		float threshold = powf(0.7f, float(i));
-		size_t target_index_count = size_t(mesh.indices.size() * threshold) / 3 * 3;
-		float target_error = 1e-2f;
-
-		// we can simplify all the way from base level or from the last result
-		// simplifying from the base level sometimes produces better results, but simplifying from last level is faster
-		const std::vector<unsigned int>& source = lods[i - 1];
-
-		if (source.size() < target_index_count)
-			target_index_count = source.size();
-
-		lod.resize(source.size());
-		lod.resize(meshopt_simplify(&lod[0], &source[0], source.size(), &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex), target_index_count, target_error));
-	}
-
-	double middle = timestamp();
-
-	// optimize each individual LOD for vertex cache & overdraw
-	for (size_t i = 0; i < lod_count; ++i)
-	{
-		std::vector<unsigned int>& lod = lods[i];
-
-		meshopt_optimizeVertexCache(&lod[0], &lod[0], lod.size(), mesh.vertices.size());
-		meshopt_optimizeOverdraw(&lod[0], &lod[0], lod.size(), &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex), 1.0f);
-	}
-
-	// concatenate all LODs into one IB
-	// note: the order of concatenation is important - since we optimize the entire IB for vertex fetch,
-	// putting coarse LODs first makes sure that the vertex range referenced by them is as small as possible
-	// some GPUs process the entire range referenced by the index buffer region so doing this optimizes the vertex transform
-	// cost for coarse LODs
-	// this order also produces much better vertex fetch cache coherency for coarse LODs (since they're essentially optimized first)
-	// somewhat surprisingly, the vertex fetch cache coherency for fine LODs doesn't seem to suffer that much.
-	size_t lod_index_offsets[lod_count] = {};
-	size_t lod_index_counts[lod_count] = {};
-	size_t total_index_count = 0;
-
-	for (int i = lod_count - 1; i >= 0; --i)
-	{
-		lod_index_offsets[i] = total_index_count;
-		lod_index_counts[i] = lods[i].size();
-
-		total_index_count += lods[i].size();
-	}
-
-	std::vector<unsigned int> indices(total_index_count);
-
-	for (size_t i = 0; i < lod_count; ++i)
-	{
-		memcpy(&indices[lod_index_offsets[i]], &lods[i][0], lods[i].size() * sizeof(lods[i][0]));
-	}
-
-	std::vector<Vertex> vertices = mesh.vertices;
-
-	// vertex fetch optimization should go last as it depends on the final index order
-	// note that the order of LODs above affects vertex fetch results
-	meshopt_optimizeVertexFetch(&vertices[0], &indices[0], indices.size(), &vertices[0], vertices.size(), sizeof(Vertex));
-
-	double end = timestamp();
-
-	printf("%-9s: %d triangles => %d LOD levels down to %d triangles in %.2f msec, optimized in %.2f msec\n",
-	       "SimplifyC",
-	       int(lod_index_counts[0]) / 3, int(lod_count), int(lod_index_counts[lod_count - 1]) / 3,
-	       (middle - start) * 1000, (end - middle) * 1000);
-
-	// for using LOD data at runtime, in addition to vertices and indices you have to save lod_index_offsets/lod_index_counts.
-
-	{
-		meshopt_VertexCacheStatistics vcs0 = meshopt_analyzeVertexCache(&indices[lod_index_offsets[0]], lod_index_counts[0], vertices.size(), kCacheSize, 0, 0);
-		meshopt_VertexFetchStatistics vfs0 = meshopt_analyzeVertexFetch(&indices[lod_index_offsets[0]], lod_index_counts[0], vertices.size(), sizeof(Vertex));
-		meshopt_VertexCacheStatistics vcsN = meshopt_analyzeVertexCache(&indices[lod_index_offsets[lod_count - 1]], lod_index_counts[lod_count - 1], vertices.size(), kCacheSize, 0, 0);
-		meshopt_VertexFetchStatistics vfsN = meshopt_analyzeVertexFetch(&indices[lod_index_offsets[lod_count - 1]], lod_index_counts[lod_count - 1], vertices.size(), sizeof(Vertex));
-
-		typedef PackedVertexOct PV;
-
-		std::vector<PV> pv(vertices.size());
-		packMesh(pv, vertices);
-
-		std::vector<unsigned char> vbuf(meshopt_encodeVertexBufferBound(vertices.size(), sizeof(PV)));
-		vbuf.resize(meshopt_encodeVertexBuffer(&vbuf[0], vbuf.size(), &pv[0], vertices.size(), sizeof(PV)));
-
-		std::vector<unsigned char> ibuf(meshopt_encodeIndexBufferBound(indices.size(), vertices.size()));
-		ibuf.resize(meshopt_encodeIndexBuffer(&ibuf[0], ibuf.size(), &indices[0], indices.size()));
-
-		printf("%-9s  ACMR %f...%f Overfetch %f..%f Codec VB %.1f bits/vertex IB %.1f bits/triangle\n",
-		       "",
-		       vcs0.acmr, vcsN.acmr, vfs0.overfetch, vfsN.overfetch,
-		       double(vbuf.size()) / double(vertices.size()) * 8,
-		       double(ibuf.size()) / double(indices.size() / 3) * 8);
-	}
-}
-
-void optimize(const Mesh& mesh, const char* name, void (*optf)(Mesh& mesh))
-{
-	Mesh copy = mesh;
-
-	double start = timestamp();
-	optf(copy);
-	double end = timestamp();
-
-	assert(isMeshValid(copy));
-	assert(hashMesh(mesh) == hashMesh(copy));
-
-	meshopt_VertexCacheStatistics vcs = meshopt_analyzeVertexCache(&copy.indices[0], copy.indices.size(), copy.vertices.size(), kCacheSize, 0, 0);
-	meshopt_VertexFetchStatistics vfs = meshopt_analyzeVertexFetch(&copy.indices[0], copy.indices.size(), copy.vertices.size(), sizeof(Vertex));
-	meshopt_OverdrawStatistics os = meshopt_analyzeOverdraw(&copy.indices[0], copy.indices.size(), &copy.vertices[0].px, copy.vertices.size(), sizeof(Vertex));
-
-	meshopt_VertexCacheStatistics vcs_nv = meshopt_analyzeVertexCache(&copy.indices[0], copy.indices.size(), copy.vertices.size(), 32, 32, 32);
-	meshopt_VertexCacheStatistics vcs_amd = meshopt_analyzeVertexCache(&copy.indices[0], copy.indices.size(), copy.vertices.size(), 14, 64, 128);
-	meshopt_VertexCacheStatistics vcs_intel = meshopt_analyzeVertexCache(&copy.indices[0], copy.indices.size(), copy.vertices.size(), 128, 0, 0);
-
-	printf("%-9s: ACMR %f ATVR %f (NV %f AMD %f Intel %f) Overfetch %f Overdraw %f in %.2f msec\n", name, vcs.acmr, vcs.atvr, vcs_nv.atvr, vcs_amd.atvr, vcs_intel.atvr, vfs.overfetch, os.overdraw, (end - start) * 1000);
-}
-
-template <typename T>
-size_t compress(const std::vector<T>& data)
-{
-	std::vector<unsigned char> cbuf(tdefl_compress_bound(data.size() * sizeof(T)));
-	unsigned int flags = tdefl_create_comp_flags_from_zip_params(MZ_DEFAULT_LEVEL, 15, MZ_DEFAULT_STRATEGY);
-	return tdefl_compress_mem_to_mem(&cbuf[0], cbuf.size(), &data[0], data.size() * sizeof(T), flags);
-}
-
-void encodeIndex(const Mesh& mesh)
-{
-	// allocate result outside of the timing loop to exclude memset() from decode timing
-	std::vector<unsigned int> result(mesh.indices.size());
-
-	double start = timestamp();
-
-	std::vector<unsigned char> buffer(meshopt_encodeIndexBufferBound(mesh.indices.size(), mesh.vertices.size()));
-	buffer.resize(meshopt_encodeIndexBuffer(&buffer[0], buffer.size(), &mesh.indices[0], mesh.indices.size()));
-
-	double middle = timestamp();
-
-	int res = meshopt_decodeIndexBuffer(&result[0], mesh.indices.size(), &buffer[0], buffer.size());
-	assert(res == 0);
-	(void)res;
-
-	double end = timestamp();
-
-	size_t csize = compress(buffer);
-
-	for (size_t i = 0; i < mesh.indices.size(); i += 3)
-	{
-		assert(
-		    (result[i + 0] == mesh.indices[i + 0] && result[i + 1] == mesh.indices[i + 1] && result[i + 2] == mesh.indices[i + 2]) ||
-		    (result[i + 1] == mesh.indices[i + 0] && result[i + 2] == mesh.indices[i + 1] && result[i + 0] == mesh.indices[i + 2]) ||
-		    (result[i + 2] == mesh.indices[i + 0] && result[i + 0] == mesh.indices[i + 1] && result[i + 1] == mesh.indices[i + 2]));
-	}
-
-	printf("IdxCodec : %.1f bits/triangle (post-deflate %.1f bits/triangle); encode %.2f msec, decode %.2f msec (%.2f GB/s)\n",
-	       double(buffer.size() * 8) / double(mesh.indices.size() / 3),
-	       double(csize * 8) / double(mesh.indices.size() / 3),
-	       (middle - start) * 1000,
-	       (end - middle) * 1000,
-	       (double(result.size() * 4) / (1 << 30)) / (end - middle));
-}
-
-template <typename PV>
-void packVertex(const Mesh& mesh, const char* pvn)
-{
-	std::vector<PV> pv(mesh.vertices.size());
-	packMesh(pv, mesh.vertices);
-
-	size_t csize = compress(pv);
-
-	printf("VtxPack%s  : %.1f bits/vertex (post-deflate %.1f bits/vertex)\n", pvn,
-	       double(pv.size() * sizeof(PV) * 8) / double(mesh.vertices.size()),
-	       double(csize * 8) / double(mesh.vertices.size()));
-}
-
-template <typename PV>
-void encodeVertex(const Mesh& mesh, const char* pvn)
-{
-	std::vector<PV> pv(mesh.vertices.size());
-	packMesh(pv, mesh.vertices);
-
-	// allocate result outside of the timing loop to exclude memset() from decode timing
-	std::vector<PV> result(mesh.vertices.size());
-
-	double start = timestamp();
-
-	std::vector<unsigned char> vbuf(meshopt_encodeVertexBufferBound(mesh.vertices.size(), sizeof(PV)));
-	vbuf.resize(meshopt_encodeVertexBuffer(&vbuf[0], vbuf.size(), &pv[0], mesh.vertices.size(), sizeof(PV)));
-
-	double middle = timestamp();
-
-	int res = meshopt_decodeVertexBuffer(&result[0], mesh.vertices.size(), sizeof(PV), &vbuf[0], vbuf.size());
-	assert(res == 0);
-	(void)res;
-
-	double end = timestamp();
-
-	assert(memcmp(&pv[0], &result[0], pv.size() * sizeof(PV)) == 0);
-
-	size_t csize = compress(vbuf);
-
-	printf("VtxCodec%1s: %.1f bits/vertex (post-deflate %.1f bits/vertex); encode %.2f msec, decode %.2f msec (%.2f GB/s)\n", pvn,
-	       double(vbuf.size() * 8) / double(mesh.vertices.size()),
-	       double(csize * 8) / double(mesh.vertices.size()),
-	       (middle - start) * 1000,
-	       (end - middle) * 1000,
-	       (double(result.size() * sizeof(PV)) / (1 << 30)) / (end - middle));
-}
-
-void stripify(const Mesh& mesh, bool use_restart)
-{
-	unsigned int restart_index = use_restart ? ~0u : 0;
-
-	// note: input mesh is assumed to be optimized for vertex cache and vertex fetch
-	double start = timestamp();
-	std::vector<unsigned int> strip(meshopt_stripifyBound(mesh.indices.size()));
-	strip.resize(meshopt_stripify(&strip[0], &mesh.indices[0], mesh.indices.size(), mesh.vertices.size(), restart_index));
-	double end = timestamp();
-
-	Mesh copy = mesh;
-	copy.indices.resize(meshopt_unstripify(&copy.indices[0], &strip[0], strip.size(), restart_index));
-	assert(copy.indices.size() <= meshopt_unstripifyBound(strip.size()));
-
-	assert(isMeshValid(copy));
-	assert(hashMesh(mesh) == hashMesh(copy));
-
-	meshopt_VertexCacheStatistics vcs = meshopt_analyzeVertexCache(&copy.indices[0], mesh.indices.size(), mesh.vertices.size(), kCacheSize, 0, 0);
-	meshopt_VertexCacheStatistics vcs_nv = meshopt_analyzeVertexCache(&copy.indices[0], mesh.indices.size(), mesh.vertices.size(), 32, 32, 32);
-	meshopt_VertexCacheStatistics vcs_amd = meshopt_analyzeVertexCache(&copy.indices[0], mesh.indices.size(), mesh.vertices.size(), 14, 64, 128);
-	meshopt_VertexCacheStatistics vcs_intel = meshopt_analyzeVertexCache(&copy.indices[0], mesh.indices.size(), mesh.vertices.size(), 128, 0, 0);
-
-	printf("Stripify%c: ACMR %f ATVR %f (NV %f AMD %f Intel %f); %d strip indices (%.1f%%) in %.2f msec\n",
-	       use_restart ? 'R' : ' ',
-	       vcs.acmr, vcs.atvr, vcs_nv.atvr, vcs_amd.atvr, vcs_intel.atvr,
-	       int(strip.size()), double(strip.size()) / double(mesh.indices.size()) * 100,
-	       (end - start) * 1000);
-}
-
-void shadow(const Mesh& mesh)
-{
-	// note: input mesh is assumed to be optimized for vertex cache and vertex fetch
-
-	double start = timestamp();
-	// this index buffer can be used for position-only rendering using the same vertex data that the original index buffer uses
-	std::vector<unsigned int> shadow_indices(mesh.indices.size());
-	meshopt_generateShadowIndexBuffer(&shadow_indices[0], &mesh.indices[0], mesh.indices.size(), &mesh.vertices[0], mesh.vertices.size(), sizeof(float) * 3, sizeof(Vertex));
-	double end = timestamp();
-
-	// while you can't optimize the vertex data after shadow IB was constructed, you can and should optimize the shadow IB for vertex cache
-	// this is valuable even if the original indices array was optimized for vertex cache!
-	meshopt_optimizeVertexCache(&shadow_indices[0], &shadow_indices[0], shadow_indices.size(), mesh.vertices.size());
-
-	meshopt_VertexCacheStatistics vcs = meshopt_analyzeVertexCache(&mesh.indices[0], mesh.indices.size(), mesh.vertices.size(), kCacheSize, 0, 0);
-	meshopt_VertexCacheStatistics vcss = meshopt_analyzeVertexCache(&shadow_indices[0], shadow_indices.size(), mesh.vertices.size(), kCacheSize, 0, 0);
-
-	std::vector<char> shadow_flags(mesh.vertices.size());
-	size_t shadow_vertices = 0;
-
-	for (size_t i = 0; i < shadow_indices.size(); ++i)
-	{
-		unsigned int index = shadow_indices[i];
-		shadow_vertices += 1 - shadow_flags[index];
-		shadow_flags[index] = 1;
-	}
-
-	printf("ShadowIB : ACMR %f (%.2fx improvement); %d shadow vertices (%.2fx improvement) in %.2f msec\n",
-	       vcss.acmr, double(vcs.vertices_transformed) / double(vcss.vertices_transformed),
-	       int(shadow_vertices), double(mesh.vertices.size()) / double(shadow_vertices),
-	       (end - start) * 1000);
-}
-
-void meshlets(const Mesh& mesh)
-{
-	const size_t max_vertices = 64;
-	const size_t max_triangles = 126;
-
-	// note: input mesh is assumed to be optimized for vertex cache and vertex fetch
-	double start = timestamp();
-	std::vector<meshopt_Meshlet> meshlets(meshopt_buildMeshletsBound(mesh.indices.size(), max_vertices, max_triangles));
-	meshlets.resize(meshopt_buildMeshlets(&meshlets[0], &mesh.indices[0], mesh.indices.size(), mesh.vertices.size(), max_vertices, max_triangles));
-	double end = timestamp();
-
-	double avg_vertices = 0;
-	double avg_triangles = 0;
-	size_t not_full = 0;
-
-	for (size_t i = 0; i < meshlets.size(); ++i)
-	{
-		const meshopt_Meshlet& m = meshlets[i];
-
-		avg_vertices += m.vertex_count;
-		avg_triangles += m.triangle_count;
-		not_full += m.vertex_count < max_vertices;
-	}
-
-	avg_vertices /= double(meshlets.size());
-	avg_triangles /= double(meshlets.size());
-
-	printf("Meshlets : %d meshlets (avg vertices %.1f, avg triangles %.1f, not full %d) in %.2f msec\n",
-	       int(meshlets.size()), avg_vertices, avg_triangles, int(not_full), (end - start) * 1000);
-
-	float camera[3] = {100, 100, 100};
-
-	size_t rejected = 0;
-	size_t rejected_s8 = 0;
-	size_t rejected_alt = 0;
-	size_t rejected_alt_s8 = 0;
-	size_t accepted = 0;
-	size_t accepted_s8 = 0;
-
-	double startc = timestamp();
-	for (size_t i = 0; i < meshlets.size(); ++i)
-	{
-		meshopt_Bounds bounds = meshopt_computeMeshletBounds(&meshlets[i], &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex));
-
-		// trivial accept: we can't ever backface cull this meshlet
-		accepted += (bounds.cone_cutoff >= 1);
-		accepted_s8 += (bounds.cone_cutoff_s8 >= 127);
-
-		// perspective projection: dot(normalize(cone_apex - camera_position), cone_axis) > cone_cutoff
-		float mview[3] = {bounds.cone_apex[0] - camera[0], bounds.cone_apex[1] - camera[1], bounds.cone_apex[2] - camera[2]};
-		float mviewlength = sqrtf(mview[0] * mview[0] + mview[1] * mview[1] + mview[2] * mview[2]);
-
-		rejected += mview[0] * bounds.cone_axis[0] + mview[1] * bounds.cone_axis[1] + mview[2] * bounds.cone_axis[2] >= bounds.cone_cutoff * mviewlength;
-		rejected_s8 += mview[0] * (bounds.cone_axis_s8[0] / 127.f) + mview[1] * (bounds.cone_axis_s8[1] / 127.f) + mview[2] * (bounds.cone_axis_s8[2] / 127.f) >= (bounds.cone_cutoff_s8 / 127.f) * mviewlength;
-
-		// alternative formulation for perspective projection that doesn't use apex (and uses cluster bounding sphere instead):
-		// dot(normalize(center - camera_position), cone_axis) > cone_cutoff + radius / length(center - camera_position)
-		float cview[3] = {bounds.center[0] - camera[0], bounds.center[1] - camera[1], bounds.center[2] - camera[2]};
-		float cviewlength = sqrtf(cview[0] * cview[0] + cview[1] * cview[1] + cview[2] * cview[2]);
-
-		rejected_alt += cview[0] * bounds.cone_axis[0] + cview[1] * bounds.cone_axis[1] + cview[2] * bounds.cone_axis[2] >= bounds.cone_cutoff * cviewlength + bounds.radius;
-		rejected_alt_s8 += cview[0] * (bounds.cone_axis_s8[0] / 127.f) + cview[1] * (bounds.cone_axis_s8[1] / 127.f) + cview[2] * (bounds.cone_axis_s8[2] / 127.f) >= (bounds.cone_cutoff_s8 / 127.f) * cviewlength + bounds.radius;
-	}
-	double endc = timestamp();
-
-	printf("ConeCull : rejected apex %d (%.1f%%) / center %d (%.1f%%), trivially accepted %d (%.1f%%) in %.2f msec\n",
-	       int(rejected), double(rejected) / double(meshlets.size()) * 100,
-	       int(rejected_alt), double(rejected_alt) / double(meshlets.size()) * 100,
-	       int(accepted), double(accepted) / double(meshlets.size()) * 100,
-	       (endc - startc) * 1000);
-	printf("ConeCull8: rejected apex %d (%.1f%%) / center %d (%.1f%%), trivially accepted %d (%.1f%%) in %.2f msec\n",
-	       int(rejected_s8), double(rejected_s8) / double(meshlets.size()) * 100,
-	       int(rejected_alt_s8), double(rejected_alt_s8) / double(meshlets.size()) * 100,
-	       int(accepted_s8), double(accepted_s8) / double(meshlets.size()) * 100,
-	       (endc - startc) * 1000);
-}
-
-void spatialSort(const Mesh& mesh)
-{
-	typedef PackedVertexOct PV;
-
-	std::vector<PV> pv(mesh.vertices.size());
-	packMesh(pv, mesh.vertices);
-
-	double start = timestamp();
-
-	std::vector<unsigned int> remap(mesh.vertices.size());
-	meshopt_spatialSortRemap(&remap[0], &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex));
-
-	double end = timestamp();
-
-	meshopt_remapVertexBuffer(&pv[0], &pv[0], mesh.vertices.size(), sizeof(PV), &remap[0]);
-
-	std::vector<unsigned char> vbuf(meshopt_encodeVertexBufferBound(mesh.vertices.size(), sizeof(PV)));
-	vbuf.resize(meshopt_encodeVertexBuffer(&vbuf[0], vbuf.size(), &pv[0], mesh.vertices.size(), sizeof(PV)));
-
-	size_t csize = compress(vbuf);
-
-	printf("Spatial  : %.1f bits/vertex (post-deflate %.1f bits/vertex); sort %.2f msec\n",
-	       double(vbuf.size() * 8) / double(mesh.vertices.size()),
-	       double(csize * 8) / double(mesh.vertices.size()),
-	       (end - start) * 1000);
-}
-
-void spatialSortTriangles(const Mesh& mesh)
-{
-	typedef PackedVertexOct PV;
-
-	Mesh copy = mesh;
-
-	double start = timestamp();
-
-	meshopt_spatialSortTriangles(&copy.indices[0], &copy.indices[0], mesh.indices.size(), &copy.vertices[0].px, copy.vertices.size(), sizeof(Vertex));
-
-	double end = timestamp();
-
-	meshopt_optimizeVertexCache(&copy.indices[0], &copy.indices[0], copy.indices.size(), copy.vertices.size());
-	meshopt_optimizeVertexFetch(&copy.vertices[0], &copy.indices[0], copy.indices.size(), &copy.vertices[0], copy.vertices.size(), sizeof(Vertex));
-
-	std::vector<PV> pv(mesh.vertices.size());
-	packMesh(pv, copy.vertices);
-
-	std::vector<unsigned char> vbuf(meshopt_encodeVertexBufferBound(mesh.vertices.size(), sizeof(PV)));
-	vbuf.resize(meshopt_encodeVertexBuffer(&vbuf[0], vbuf.size(), &pv[0], mesh.vertices.size(), sizeof(PV)));
-
-	std::vector<unsigned char> ibuf(meshopt_encodeIndexBufferBound(mesh.indices.size(), mesh.vertices.size()));
-	ibuf.resize(meshopt_encodeIndexBuffer(&ibuf[0], ibuf.size(), &copy.indices[0], mesh.indices.size()));
-
-	size_t csizev = compress(vbuf);
-	size_t csizei = compress(ibuf);
-
-	printf("SpatialT : %.1f bits/vertex (post-deflate %.1f bits/vertex); %.1f bits/triangle (post-deflate %.1f bits/triangle); sort %.2f msec\n",
-	       double(vbuf.size() * 8) / double(mesh.vertices.size()),
-	       double(csizev * 8) / double(mesh.vertices.size()),
-	       double(ibuf.size() * 8) / double(mesh.indices.size() / 3),
-	       double(csizei * 8) / double(mesh.indices.size() / 3),
-	       (end - start) * 1000);
-}
-
-bool loadMesh(Mesh& mesh, const char* path)
-{
-	double start = timestamp();
-	double middle;
-	mesh = parseObj(path, middle);
-	double end = timestamp();
-
-	if (mesh.vertices.empty())
-	{
-		printf("Mesh %s is empty, skipping\n", path);
-		return false;
-	}
-
-	printf("# %s: %d vertices, %d triangles; read in %.2f msec; indexed in %.2f msec\n", path, int(mesh.vertices.size()), int(mesh.indices.size() / 3), (middle - start) * 1000, (end - middle) * 1000);
-	return true;
-}
-
-void processDeinterleaved(const char* path)
-{
-	// Most algorithms in the library work out of the box with deinterleaved geometry, but some require slightly special treatment;
-	// this code runs a simplified version of complete opt. pipeline using deinterleaved geo. There's no compression performed but you
-	// can trivially run it by quantizing all elements and running meshopt_encodeVertexBuffer once for each vertex stream.
-	fastObjMesh* obj = fast_obj_read(path);
-	if (!obj)
-	{
-		printf("Error loading %s: file not found\n", path);
-		return;
-	}
-
-	size_t total_indices = 0;
-
-	for (unsigned int i = 0; i < obj->face_count; ++i)
-		total_indices += 3 * (obj->face_vertices[i] - 2);
-
-	std::vector<float> unindexed_pos(total_indices * 3);
-	std::vector<float> unindexed_nrm(total_indices * 3);
-	std::vector<float> unindexed_uv(total_indices * 2);
-
-	size_t vertex_offset = 0;
-	size_t index_offset = 0;
-
-	for (unsigned int i = 0; i < obj->face_count; ++i)
-	{
-		for (unsigned int j = 0; j < obj->face_vertices[i]; ++j)
-		{
-			fastObjIndex gi = obj->indices[index_offset + j];
-
-			// triangulate polygon on the fly; offset-3 is always the first polygon vertex
-			if (j >= 3)
-			{
-				memcpy(&unindexed_pos[(vertex_offset + 0) * 3], &unindexed_pos[(vertex_offset - 3) * 3], 3 * sizeof(float));
-				memcpy(&unindexed_nrm[(vertex_offset + 0) * 3], &unindexed_nrm[(vertex_offset - 3) * 3], 3 * sizeof(float));
-				memcpy(&unindexed_uv[(vertex_offset + 0) * 2], &unindexed_uv[(vertex_offset - 3) * 2], 2 * sizeof(float));
-				memcpy(&unindexed_pos[(vertex_offset + 1) * 3], &unindexed_pos[(vertex_offset - 1) * 3], 3 * sizeof(float));
-				memcpy(&unindexed_nrm[(vertex_offset + 1) * 3], &unindexed_nrm[(vertex_offset - 1) * 3], 3 * sizeof(float));
-				memcpy(&unindexed_uv[(vertex_offset + 1) * 2], &unindexed_uv[(vertex_offset - 1) * 2], 2 * sizeof(float));
-				vertex_offset += 2;
-			}
-
-			memcpy(&unindexed_pos[vertex_offset * 3], &obj->positions[gi.p * 3], 3 * sizeof(float));
-			memcpy(&unindexed_nrm[vertex_offset * 3], &obj->normals[gi.n * 3], 3 * sizeof(float));
-			memcpy(&unindexed_uv[vertex_offset * 2], &obj->texcoords[gi.t * 2], 2 * sizeof(float));
-			vertex_offset++;
-		}
-
-		index_offset += obj->face_vertices[i];
-	}
-
-	fast_obj_destroy(obj);
-
-	double start = timestamp();
-
-	meshopt_Stream streams[] = {
-	    {&unindexed_pos[0], sizeof(float) * 3, sizeof(float) * 3},
-	    {&unindexed_nrm[0], sizeof(float) * 3, sizeof(float) * 3},
-	    {&unindexed_uv[0], sizeof(float) * 2, sizeof(float) * 2},
-	};
-
-	std::vector<unsigned int> remap(total_indices);
-
-	size_t total_vertices = meshopt_generateVertexRemapMulti(&remap[0], NULL, total_indices, total_indices, streams, sizeof(streams) / sizeof(streams[0]));
-
-	std::vector<unsigned int> indices(total_indices);
-	meshopt_remapIndexBuffer(&indices[0], NULL, total_indices, &remap[0]);
-
-	std::vector<float> pos(total_vertices * 3);
-	meshopt_remapVertexBuffer(&pos[0], &unindexed_pos[0], total_indices, sizeof(float) * 3, &remap[0]);
-
-	std::vector<float> nrm(total_vertices * 3);
-	meshopt_remapVertexBuffer(&nrm[0], &unindexed_nrm[0], total_indices, sizeof(float) * 3, &remap[0]);
-
-	std::vector<float> uv(total_vertices * 2);
-	meshopt_remapVertexBuffer(&uv[0], &unindexed_uv[0], total_indices, sizeof(float) * 2, &remap[0]);
-
-	double reindex = timestamp();
-
-	meshopt_optimizeVertexCache(&indices[0], &indices[0], total_indices, total_vertices);
-
-	meshopt_optimizeVertexFetchRemap(&remap[0], &indices[0], total_indices, total_vertices);
-	meshopt_remapVertexBuffer(&pos[0], &pos[0], total_vertices, sizeof(float) * 3, &remap[0]);
-	meshopt_remapVertexBuffer(&nrm[0], &nrm[0], total_vertices, sizeof(float) * 3, &remap[0]);
-	meshopt_remapVertexBuffer(&uv[0], &uv[0], total_vertices, sizeof(float) * 2, &remap[0]);
-
-	double optimize = timestamp();
-
-	// note: since shadow index buffer is computed based on regular vertex/index buffer, the stream points at the indexed data - not unindexed_pos
-	meshopt_Stream shadow_stream = {&pos[0], sizeof(float) * 3, sizeof(float) * 3};
-
-	std::vector<unsigned int> shadow_indices(total_indices);
-	meshopt_generateShadowIndexBufferMulti(&shadow_indices[0], &indices[0], total_indices, total_vertices, &shadow_stream, 1);
-
-	meshopt_optimizeVertexCache(&shadow_indices[0], &shadow_indices[0], total_indices, total_vertices);
-
-	double shadow = timestamp();
-
-	printf("Deintrlvd: %d vertices, reindexed in %.2f msec, optimized in %.2f msec, generated & optimized shadow indices in %.2f msec\n",
-	       int(total_vertices), (reindex - start) * 1000, (optimize - reindex) * 1000, (shadow - optimize) * 1000);
-}
-
-void process(const char* path)
-{
-	Mesh mesh;
-	if (!loadMesh(mesh, path))
-		return;
-
-	optimize(mesh, "Original", optNone);
-	optimize(mesh, "Random", optRandomShuffle);
-	optimize(mesh, "Cache", optCache);
-	optimize(mesh, "CacheFifo", optCacheFifo);
-	optimize(mesh, "Overdraw", optOverdraw);
-	optimize(mesh, "Fetch", optFetch);
-	optimize(mesh, "FetchMap", optFetchRemap);
-	optimize(mesh, "Complete", optComplete);
-
-	Mesh copy = mesh;
-	meshopt_optimizeVertexCache(&copy.indices[0], &copy.indices[0], copy.indices.size(), copy.vertices.size());
-	meshopt_optimizeVertexFetch(&copy.vertices[0], &copy.indices[0], copy.indices.size(), &copy.vertices[0], copy.vertices.size(), sizeof(Vertex));
-
-	stripify(copy, false);
-	stripify(copy, true);
-
-	meshlets(copy);
-	shadow(copy);
-
-	encodeIndex(copy);
-	packVertex<PackedVertex>(copy, "");
-	encodeVertex<PackedVertex>(copy, "");
-	encodeVertex<PackedVertexOct>(copy, "O");
-
-	simplify(mesh);
-	simplifySloppy(mesh);
-	simplifyComplete(mesh);
-	simplifyPoints(mesh);
-
-	spatialSort(mesh);
-	spatialSortTriangles(mesh);
-
-	if (path)
-		processDeinterleaved(path);
-}
-
-void processDev(const char* path)
-{
-	Mesh mesh;
-	if (!loadMesh(mesh, path))
-		return;
-
-	Mesh copy = mesh;
-	meshopt_optimizeVertexCache(&copy.indices[0], &copy.indices[0], copy.indices.size(), copy.vertices.size());
-	meshopt_optimizeVertexFetch(&copy.vertices[0], &copy.indices[0], copy.indices.size(), &copy.vertices[0], copy.vertices.size(), sizeof(Vertex));
-
-	encodeIndex(copy);
-	encodeVertex<PackedVertex>(copy, "");
-	encodeVertex<PackedVertexOct>(copy, "O");
-}
-
-int main(int argc, char** argv)
-{
-	void runTests();
-
-	if (argc == 1)
-	{
-		runTests();
-	}
-	else
-	{
-		if (strcmp(argv[1], "-d") == 0)
-		{
-			for (int i = 2; i < argc; ++i)
-			{
-				processDev(argv[i]);
-			}
-		}
-		else
-		{
-			for (int i = 1; i < argc; ++i)
-			{
-				process(argv[i]);
-			}
-
-			runTests();
-		}
-	}
-}

3rdparty/meshoptimizer/demo/miniz.cpp

@@ -1,1197 +0,0 @@
-/* This is miniz.c with removal of all zlib/zip like functionality - only tdefl/tinfl APIs are left
-   For maximum compatibility unaligned load/store and 64-bit register paths have been removed so this is slower than miniz.c
-
-   miniz.c v1.15 - public domain deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing
-   See "unlicense" statement at the end of this file.
-   Rich Geldreich <[email protected]>, last updated Oct. 13, 2013
-   Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt
-*/
-
-// clang-format off
-
-#include "miniz.h"
-
-#ifndef MINIZ_HEADER_FILE_ONLY
-
-typedef unsigned char mz_validate_uint16[sizeof(mz_uint16)==2 ? 1 : -1];
-typedef unsigned char mz_validate_uint32[sizeof(mz_uint32)==4 ? 1 : -1];
-typedef unsigned char mz_validate_uint64[sizeof(mz_uint64)==8 ? 1 : -1];
-
-#include <string.h>
-#include <assert.h>
-
-#define MZ_ASSERT(x) assert(x)
-
-#ifdef MINIZ_NO_MALLOC
-  #define MZ_MALLOC(x) NULL
-  #define MZ_FREE(x) (void)x, ((void)0)
-  #define MZ_REALLOC(p, x) NULL
-#else
-  #define MZ_MALLOC(x) malloc(x)
-  #define MZ_FREE(x) free(x)
-  #define MZ_REALLOC(p, x) realloc(p, x)
-#endif
-
-#define MZ_MAX(a,b) (((a)>(b))?(a):(b))
-#define MZ_MIN(a,b) (((a)<(b))?(a):(b))
-#define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj))
-
-#define MZ_READ_LE16(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U))
-#define MZ_READ_LE32(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U) | ((mz_uint32)(((const mz_uint8 *)(p))[2]) << 16U) | ((mz_uint32)(((const mz_uint8 *)(p))[3]) << 24U))
-
-#ifdef _MSC_VER
-  #define MZ_FORCEINLINE __forceinline
-#elif defined(__GNUC__)
-  #define MZ_FORCEINLINE inline __attribute__((__always_inline__))
-#else
-  #define MZ_FORCEINLINE inline
-#endif
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
-
-mz_uint32 mz_adler32(mz_uint32 adler, const unsigned char *ptr, size_t buf_len)
-{
-  mz_uint32 i, s1 = (mz_uint32)(adler & 0xffff), s2 = (mz_uint32)(adler >> 16); size_t block_len = buf_len % 5552;
-  if (!ptr) return MZ_ADLER32_INIT;
-  while (buf_len) {
-    for (i = 0; i + 7 < block_len; i += 8, ptr += 8) {
-      s1 += ptr[0], s2 += s1; s1 += ptr[1], s2 += s1; s1 += ptr[2], s2 += s1; s1 += ptr[3], s2 += s1;
-      s1 += ptr[4], s2 += s1; s1 += ptr[5], s2 += s1; s1 += ptr[6], s2 += s1; s1 += ptr[7], s2 += s1;
-    }
-    for ( ; i < block_len; ++i) s1 += *ptr++, s2 += s1;
-    s1 %= 65521U, s2 %= 65521U; buf_len -= block_len; block_len = 5552;
-  }
-  return (s2 << 16) + s1;
-}
-
-void mz_free(void *p)
-{
-  MZ_FREE(p);
-}
-
-// ------------------- Low-level Decompression (completely independent from all compression API's)
-
-#define TINFL_MEMCPY(d, s, l) memcpy(d, s, l)
-#define TINFL_MEMSET(p, c, l) memset(p, c, l)
-
-#define TINFL_CR_BEGIN switch(r->m_state) { case 0:
-#define TINFL_CR_RETURN(state_index, result) do { status = result; r->m_state = state_index; goto common_exit; case state_index:; } MZ_MACRO_END
-#define TINFL_CR_RETURN_FOREVER(state_index, result) do { for ( ; ; ) { TINFL_CR_RETURN(state_index, result); } } MZ_MACRO_END
-#define TINFL_CR_FINISH }
-
-// TODO: If the caller has indicated that there's no more input, and we attempt to read beyond the input buf, then something is wrong with the input because the inflator never
-// reads ahead more than it needs to. Currently TINFL_GET_BYTE() pads the end of the stream with 0's in this scenario.
-#define TINFL_GET_BYTE(state_index, c) do { \
-  if (pIn_buf_cur >= pIn_buf_end) { \
-    for ( ; ; ) { \
-      if (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) { \
-        TINFL_CR_RETURN(state_index, TINFL_STATUS_NEEDS_MORE_INPUT); \
-        if (pIn_buf_cur < pIn_buf_end) { \
-          c = *pIn_buf_cur++; \
-          break; \
-        } \
-      } else { \
-        c = 0; \
-        break; \
-      } \
-    } \
-  } else c = *pIn_buf_cur++; } MZ_MACRO_END
-
-#define TINFL_NEED_BITS(state_index, n) do { mz_uint c; TINFL_GET_BYTE(state_index, c); bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); num_bits += 8; } while (num_bits < (mz_uint)(n))
-#define TINFL_SKIP_BITS(state_index, n) do { if (num_bits < (mz_uint)(n)) { TINFL_NEED_BITS(state_index, n); } bit_buf >>= (n); num_bits -= (n); } MZ_MACRO_END
-#define TINFL_GET_BITS(state_index, b, n) do { if (num_bits < (mz_uint)(n)) { TINFL_NEED_BITS(state_index, n); } b = bit_buf & ((1 << (n)) - 1); bit_buf >>= (n); num_bits -= (n); } MZ_MACRO_END
-
-// TINFL_HUFF_BITBUF_FILL() is only used rarely, when the number of bytes remaining in the input buffer falls below 2.
-// It reads just enough bytes from the input stream that are needed to decode the next Huffman code (and absolutely no more). It works by trying to fully decode a
-// Huffman code by using whatever bits are currently present in the bit buffer. If this fails, it reads another byte, and tries again until it succeeds or until the
-// bit buffer contains >=15 bits (deflate's max. Huffman code size).
-#define TINFL_HUFF_BITBUF_FILL(state_index, pHuff) \
-  do { \
-    temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]; \
-    if (temp >= 0) { \
-      code_len = temp >> 9; \
-      if ((code_len) && (num_bits >= code_len)) \
-      break; \
-    } else if (num_bits > TINFL_FAST_LOOKUP_BITS) { \
-       code_len = TINFL_FAST_LOOKUP_BITS; \
-       do { \
-          temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; \
-       } while ((temp < 0) && (num_bits >= (code_len + 1))); if (temp >= 0) break; \
-    } TINFL_GET_BYTE(state_index, c); bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); num_bits += 8; \
-  } while (num_bits < 15);
-
-// TINFL_HUFF_DECODE() decodes the next Huffman coded symbol. It's more complex than you would initially expect because the zlib API expects the decompressor to never read
-// beyond the final byte of the deflate stream. (In other words, when this macro wants to read another byte from the input, it REALLY needs another byte in order to fully
-// decode the next Huffman code.) Handling this properly is particularly important on raw deflate (non-zlib) streams, which aren't followed by a byte aligned adler-32.
-// The slow path is only executed at the very end of the input buffer.
-#define TINFL_HUFF_DECODE(state_index, sym, pHuff) do { \
-  int temp; mz_uint code_len, c; \
-  if (num_bits < 15) { \
-    if ((pIn_buf_end - pIn_buf_cur) < 2) { \
-       TINFL_HUFF_BITBUF_FILL(state_index, pHuff); \
-    } else { \
-       bit_buf |= (((tinfl_bit_buf_t)pIn_buf_cur[0]) << num_bits) | (((tinfl_bit_buf_t)pIn_buf_cur[1]) << (num_bits + 8)); pIn_buf_cur += 2; num_bits += 16; \
-    } \
-  } \
-  if ((temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) \
-    code_len = temp >> 9, temp &= 511; \
-  else { \
-    code_len = TINFL_FAST_LOOKUP_BITS; do { temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; } while (temp < 0); \
-  } sym = temp; bit_buf >>= code_len; num_bits -= code_len; } MZ_MACRO_END
-
-tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_next, size_t *pIn_buf_size, mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, const mz_uint32 decomp_flags)
-{
-  static const int s_length_base[31] = { 3,4,5,6,7,8,9,10,11,13, 15,17,19,23,27,31,35,43,51,59, 67,83,99,115,131,163,195,227,258,0,0 };
-  static const int s_length_extra[31]= { 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 };
-  static const int s_dist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, 257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0};
-  static const int s_dist_extra[32] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
-  static const mz_uint8 s_length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 };
-  static const int s_min_table_sizes[3] = { 257, 1, 4 };
-
-  tinfl_status status = TINFL_STATUS_FAILED; mz_uint32 num_bits, dist, counter, num_extra; tinfl_bit_buf_t bit_buf;
-  const mz_uint8 *pIn_buf_cur = pIn_buf_next, *const pIn_buf_end = pIn_buf_next + *pIn_buf_size;
-  mz_uint8 *pOut_buf_cur = pOut_buf_next, *const pOut_buf_end = pOut_buf_next + *pOut_buf_size;
-  size_t out_buf_size_mask = (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF) ? (size_t)-1 : ((pOut_buf_next - pOut_buf_start) + *pOut_buf_size) - 1, dist_from_out_buf_start;
-
-  // Ensure the output buffer's size is a power of 2, unless the output buffer is large enough to hold the entire output file (in which case it doesn't matter).
-  if (((out_buf_size_mask + 1) & out_buf_size_mask) || (pOut_buf_next < pOut_buf_start)) { *pIn_buf_size = *pOut_buf_size = 0; return TINFL_STATUS_BAD_PARAM; }
-
-  num_bits = r->m_num_bits; bit_buf = r->m_bit_buf; dist = r->m_dist; counter = r->m_counter; num_extra = r->m_num_extra; dist_from_out_buf_start = r->m_dist_from_out_buf_start;
-  TINFL_CR_BEGIN
-
-  bit_buf = num_bits = dist = counter = num_extra = r->m_zhdr0 = r->m_zhdr1 = 0; r->m_z_adler32 = r->m_check_adler32 = 1;
-  if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER)
-  {
-    TINFL_GET_BYTE(1, r->m_zhdr0); TINFL_GET_BYTE(2, r->m_zhdr1);
-    counter = (((r->m_zhdr0 * 256 + r->m_zhdr1) % 31 != 0) || (r->m_zhdr1 & 32) || ((r->m_zhdr0 & 15) != 8));
-    if (!(decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) counter |= (((1U << (8U + (r->m_zhdr0 >> 4))) > 32768U) || ((out_buf_size_mask + 1) < (mz_uint32)(1U << (8U + (r->m_zhdr0 >> 4)))));
-    if (counter) { TINFL_CR_RETURN_FOREVER(36, TINFL_STATUS_FAILED); }
-  }
-
-  do
-  {
-    TINFL_GET_BITS(3, r->m_final, 3); r->m_type = r->m_final >> 1;
-    if (r->m_type == 0)
-    {
-      TINFL_SKIP_BITS(5, num_bits & 7);
-      for (counter = 0; counter < 4; ++counter) { if (num_bits) TINFL_GET_BITS(6, r->m_raw_header[counter], 8); else TINFL_GET_BYTE(7, r->m_raw_header[counter]); }
-      if ((counter = (r->m_raw_header[0] | (r->m_raw_header[1] << 8))) != (mz_uint)(0xFFFF ^ (r->m_raw_header[2] | (r->m_raw_header[3] << 8)))) { TINFL_CR_RETURN_FOREVER(39, TINFL_STATUS_FAILED); }
-      while ((counter) && (num_bits))
-      {
-        TINFL_GET_BITS(51, dist, 8);
-        while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(52, TINFL_STATUS_HAS_MORE_OUTPUT); }
-        *pOut_buf_cur++ = (mz_uint8)dist;
-        counter--;
-      }
-      while (counter)
-      {
-        size_t n; while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(9, TINFL_STATUS_HAS_MORE_OUTPUT); }
-        while (pIn_buf_cur >= pIn_buf_end)
-        {
-          if (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT)
-          {
-            TINFL_CR_RETURN(38, TINFL_STATUS_NEEDS_MORE_INPUT);
-          }
-          else
-          {
-            TINFL_CR_RETURN_FOREVER(40, TINFL_STATUS_FAILED);
-          }
-        }
-        n = MZ_MIN(MZ_MIN((size_t)(pOut_buf_end - pOut_buf_cur), (size_t)(pIn_buf_end - pIn_buf_cur)), counter);
-        TINFL_MEMCPY(pOut_buf_cur, pIn_buf_cur, n); pIn_buf_cur += n; pOut_buf_cur += n; counter -= (mz_uint)n;
-      }
-    }
-    else if (r->m_type == 3)
-    {
-      TINFL_CR_RETURN_FOREVER(10, TINFL_STATUS_FAILED);
-    }
-    else
-    {
-      if (r->m_type == 1)
-      {
-        mz_uint8 *p = r->m_tables[0].m_code_size; mz_uint i;
-        r->m_table_sizes[0] = 288; r->m_table_sizes[1] = 32; TINFL_MEMSET(r->m_tables[1].m_code_size, 5, 32);
-        for ( i = 0; i <= 143; ++i) *p++ = 8;
-        for ( ; i <= 255; ++i) *p++ = 9;
-        for ( ; i <= 279; ++i) *p++ = 7;
-        for ( ; i <= 287; ++i) *p++ = 8;
-      }
-      else
-      {
-        for (counter = 0; counter < 3; counter++) { TINFL_GET_BITS(11, r->m_table_sizes[counter], "\05\05\04"[counter]); r->m_table_sizes[counter] += s_min_table_sizes[counter]; }
-        MZ_CLEAR_OBJ(r->m_tables[2].m_code_size); for (counter = 0; counter < r->m_table_sizes[2]; counter++) { mz_uint s; TINFL_GET_BITS(14, s, 3); r->m_tables[2].m_code_size[s_length_dezigzag[counter]] = (mz_uint8)s; }
-        r->m_table_sizes[2] = 19;
-      }
-      for ( ; (int)r->m_type >= 0; r->m_type--)
-      {
-        int tree_next, tree_cur; tinfl_huff_table *pTable;
-        mz_uint i, j, used_syms, total, sym_index, next_code[17], total_syms[16]; pTable = &r->m_tables[r->m_type]; MZ_CLEAR_OBJ(total_syms); MZ_CLEAR_OBJ(pTable->m_look_up); MZ_CLEAR_OBJ(pTable->m_tree);
-        for (i = 0; i < r->m_table_sizes[r->m_type]; ++i) total_syms[pTable->m_code_size[i]]++;
-        used_syms = 0, total = 0; next_code[0] = next_code[1] = 0;
-        for (i = 1; i <= 15; ++i) { used_syms += total_syms[i]; next_code[i + 1] = (total = ((total + total_syms[i]) << 1)); }
-        if ((65536 != total) && (used_syms > 1))
-        {
-          TINFL_CR_RETURN_FOREVER(35, TINFL_STATUS_FAILED);
-        }
-        for (tree_next = -1, sym_index = 0; sym_index < r->m_table_sizes[r->m_type]; ++sym_index)
-        {
-          mz_uint rev_code = 0, l, cur_code, code_size = pTable->m_code_size[sym_index]; if (!code_size) continue;
-          cur_code = next_code[code_size]++; for (l = code_size; l > 0; l--, cur_code >>= 1) rev_code = (rev_code << 1) | (cur_code & 1);
-          if (code_size <= TINFL_FAST_LOOKUP_BITS) { mz_int16 k = (mz_int16)((code_size << 9) | sym_index); while (rev_code < TINFL_FAST_LOOKUP_SIZE) { pTable->m_look_up[rev_code] = k; rev_code += (1 << code_size); } continue; }
-          if (0 == (tree_cur = pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)])) { pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; }
-          rev_code >>= (TINFL_FAST_LOOKUP_BITS - 1);
-          for (j = code_size; j > (TINFL_FAST_LOOKUP_BITS + 1); j--)
-          {
-            tree_cur -= ((rev_code >>= 1) & 1);
-            if (!pTable->m_tree[-tree_cur - 1]) { pTable->m_tree[-tree_cur - 1] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; } else tree_cur = pTable->m_tree[-tree_cur - 1];
-          }
-          tree_cur -= ((rev_code >>= 1) & 1); pTable->m_tree[-tree_cur - 1] = (mz_int16)sym_index;
-        }
-        if (r->m_type == 2)
-        {
-          for (counter = 0; counter < (r->m_table_sizes[0] + r->m_table_sizes[1]); )
-          {
-            mz_uint s; TINFL_HUFF_DECODE(16, dist, &r->m_tables[2]); if (dist < 16) { r->m_len_codes[counter++] = (mz_uint8)dist; continue; }
-            if ((dist == 16) && (!counter))
-            {
-              TINFL_CR_RETURN_FOREVER(17, TINFL_STATUS_FAILED);
-            }
-            num_extra = "\02\03\07"[dist - 16]; TINFL_GET_BITS(18, s, num_extra); s += "\03\03\013"[dist - 16];
-            TINFL_MEMSET(r->m_len_codes + counter, (dist == 16) ? r->m_len_codes[counter - 1] : 0, s); counter += s;
-          }
-          if ((r->m_table_sizes[0] + r->m_table_sizes[1]) != counter)
-          {
-            TINFL_CR_RETURN_FOREVER(21, TINFL_STATUS_FAILED);
-          }
-          TINFL_MEMCPY(r->m_tables[0].m_code_size, r->m_len_codes, r->m_table_sizes[0]); TINFL_MEMCPY(r->m_tables[1].m_code_size, r->m_len_codes + r->m_table_sizes[0], r->m_table_sizes[1]);
-        }
-      }
-      for ( ; ; )
-      {
-        mz_uint8 *pSrc;
-        for ( ; ; )
-        {
-          if (((pIn_buf_end - pIn_buf_cur) < 4) || ((pOut_buf_end - pOut_buf_cur) < 2))
-          {
-            TINFL_HUFF_DECODE(23, counter, &r->m_tables[0]);
-            if (counter >= 256)
-              break;
-            while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(24, TINFL_STATUS_HAS_MORE_OUTPUT); }
-            *pOut_buf_cur++ = (mz_uint8)counter;
-          }
-          else
-          {
-            int sym2; mz_uint code_len;
-            if (num_bits < 15) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); pIn_buf_cur += 2; num_bits += 16; }
-            if ((sym2 = r->m_tables[0].m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0)
-              code_len = sym2 >> 9;
-            else
-            {
-              code_len = TINFL_FAST_LOOKUP_BITS; do { sym2 = r->m_tables[0].m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; } while (sym2 < 0);
-            }
-            counter = sym2; bit_buf >>= code_len; num_bits -= code_len;
-            if (counter & 256)
-              break;
-
-            if ((sym2 = r->m_tables[0].m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0)
-              code_len = sym2 >> 9;
-            else
-            {
-              code_len = TINFL_FAST_LOOKUP_BITS; do { sym2 = r->m_tables[0].m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; } while (sym2 < 0);
-            }
-            bit_buf >>= code_len; num_bits -= code_len;
-
-            pOut_buf_cur[0] = (mz_uint8)counter;
-            if (sym2 & 256)
-            {
-              pOut_buf_cur++;
-              counter = sym2;
-              break;
-            }
-            pOut_buf_cur[1] = (mz_uint8)sym2;
-            pOut_buf_cur += 2;
-          }
-        }
-        if ((counter &= 511) == 256) break;
-
-        num_extra = s_length_extra[counter - 257]; counter = s_length_base[counter - 257];
-        if (num_extra) { mz_uint extra_bits; TINFL_GET_BITS(25, extra_bits, num_extra); counter += extra_bits; }
-
-        TINFL_HUFF_DECODE(26, dist, &r->m_tables[1]);
-        num_extra = s_dist_extra[dist]; dist = s_dist_base[dist];
-        if (num_extra) { mz_uint extra_bits; TINFL_GET_BITS(27, extra_bits, num_extra); dist += extra_bits; }
-
-        dist_from_out_buf_start = pOut_buf_cur - pOut_buf_start;
-        if ((dist > dist_from_out_buf_start) && (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF))
-        {
-          TINFL_CR_RETURN_FOREVER(37, TINFL_STATUS_FAILED);
-        }
-
-        pSrc = pOut_buf_start + ((dist_from_out_buf_start - dist) & out_buf_size_mask);
-
-        if ((MZ_MAX(pOut_buf_cur, pSrc) + counter) > pOut_buf_end)
-        {
-          while (counter--)
-          {
-            while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(53, TINFL_STATUS_HAS_MORE_OUTPUT); }
-            *pOut_buf_cur++ = pOut_buf_start[(dist_from_out_buf_start++ - dist) & out_buf_size_mask];
-          }
-          continue;
-        }
-        do
-        {
-          pOut_buf_cur[0] = pSrc[0];
-          pOut_buf_cur[1] = pSrc[1];
-          pOut_buf_cur[2] = pSrc[2];
-          pOut_buf_cur += 3; pSrc += 3;
-        } while ((int)(counter -= 3) > 2);
-        if ((int)counter > 0)
-        {
-          pOut_buf_cur[0] = pSrc[0];
-          if ((int)counter > 1)
-            pOut_buf_cur[1] = pSrc[1];
-          pOut_buf_cur += counter;
-        }
-      }
-    }
-  } while (!(r->m_final & 1));
-  if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER)
-  {
-    TINFL_SKIP_BITS(32, num_bits & 7); for (counter = 0; counter < 4; ++counter) { mz_uint s; if (num_bits) TINFL_GET_BITS(41, s, 8); else TINFL_GET_BYTE(42, s); r->m_z_adler32 = (r->m_z_adler32 << 8) | s; }
-  }
-  TINFL_CR_RETURN_FOREVER(34, TINFL_STATUS_DONE);
-  TINFL_CR_FINISH
-
-common_exit:
-  r->m_num_bits = num_bits; r->m_bit_buf = bit_buf; r->m_dist = dist; r->m_counter = counter; r->m_num_extra = num_extra; r->m_dist_from_out_buf_start = dist_from_out_buf_start;
-  *pIn_buf_size = pIn_buf_cur - pIn_buf_next; *pOut_buf_size = pOut_buf_cur - pOut_buf_next;
-  if ((decomp_flags & (TINFL_FLAG_PARSE_ZLIB_HEADER | TINFL_FLAG_COMPUTE_ADLER32)) && (status >= 0))
-  {
-    const mz_uint8 *ptr = pOut_buf_next; size_t buf_len = *pOut_buf_size;
-    mz_uint32 i, s1 = r->m_check_adler32 & 0xffff, s2 = r->m_check_adler32 >> 16; size_t block_len = buf_len % 5552;
-    while (buf_len)
-    {
-      for (i = 0; i + 7 < block_len; i += 8, ptr += 8)
-      {
-        s1 += ptr[0], s2 += s1; s1 += ptr[1], s2 += s1; s1 += ptr[2], s2 += s1; s1 += ptr[3], s2 += s1;
-        s1 += ptr[4], s2 += s1; s1 += ptr[5], s2 += s1; s1 += ptr[6], s2 += s1; s1 += ptr[7], s2 += s1;
-      }
-      for ( ; i < block_len; ++i) s1 += *ptr++, s2 += s1;
-      s1 %= 65521U, s2 %= 65521U; buf_len -= block_len; block_len = 5552;
-    }
-    r->m_check_adler32 = (s2 << 16) + s1; if ((status == TINFL_STATUS_DONE) && (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) && (r->m_check_adler32 != r->m_z_adler32)) status = TINFL_STATUS_ADLER32_MISMATCH;
-  }
-  return status;
-}
-
-// Higher level helper functions.
-size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags)
-{
-  tinfl_decompressor decomp; tinfl_status status; tinfl_init(&decomp);
-  status = tinfl_decompress(&decomp, (const mz_uint8*)pSrc_buf, &src_buf_len, (mz_uint8*)pOut_buf, (mz_uint8*)pOut_buf, &out_buf_len, (flags & ~TINFL_FLAG_HAS_MORE_INPUT) | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF);
-  return (status != TINFL_STATUS_DONE) ? TINFL_DECOMPRESS_MEM_TO_MEM_FAILED : out_buf_len;
-}
-
-int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size, tinfl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags)
-{
-  int result = 0;
-  tinfl_decompressor decomp;
-  mz_uint8 *pDict = (mz_uint8*)MZ_MALLOC(TINFL_LZ_DICT_SIZE); size_t in_buf_ofs = 0, dict_ofs = 0;
-  if (!pDict)
-    return TINFL_STATUS_FAILED;
-  tinfl_init(&decomp);
-  for ( ; ; )
-  {
-    size_t in_buf_size = *pIn_buf_size - in_buf_ofs, dst_buf_size = TINFL_LZ_DICT_SIZE - dict_ofs;
-    tinfl_status status = tinfl_decompress(&decomp, (const mz_uint8*)pIn_buf + in_buf_ofs, &in_buf_size, pDict, pDict + dict_ofs, &dst_buf_size,
-      (flags & ~(TINFL_FLAG_HAS_MORE_INPUT | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)));
-    in_buf_ofs += in_buf_size;
-    if ((dst_buf_size) && (!(*pPut_buf_func)(pDict + dict_ofs, (int)dst_buf_size, pPut_buf_user)))
-      break;
-    if (status != TINFL_STATUS_HAS_MORE_OUTPUT)
-    {
-      result = (status == TINFL_STATUS_DONE);
-      break;
-    }
-    dict_ofs = (dict_ofs + dst_buf_size) & (TINFL_LZ_DICT_SIZE - 1);
-  }
-  MZ_FREE(pDict);
-  *pIn_buf_size = in_buf_ofs;
-  return result;
-}
-
-// ------------------- Low-level Compression (independent from all decompression API's)
-
-// Purposely making these tables static for faster init and thread safety.
-static const mz_uint16 s_tdefl_len_sym[256] = {
-  257,258,259,260,261,262,263,264,265,265,266,266,267,267,268,268,269,269,269,269,270,270,270,270,271,271,271,271,272,272,272,272,
-  273,273,273,273,273,273,273,273,274,274,274,274,274,274,274,274,275,275,275,275,275,275,275,275,276,276,276,276,276,276,276,276,
-  277,277,277,277,277,277,277,277,277,277,277,277,277,277,277,277,278,278,278,278,278,278,278,278,278,278,278,278,278,278,278,278,
-  279,279,279,279,279,279,279,279,279,279,279,279,279,279,279,279,280,280,280,280,280,280,280,280,280,280,280,280,280,280,280,280,
-  281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,
-  282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,
-  283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,
-  284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,285 };
-
-static const mz_uint8 s_tdefl_len_extra[256] = {
-  0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
-  4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
-  5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
-  5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,0 };
-
-static const mz_uint8 s_tdefl_small_dist_sym[512] = {
-  0,1,2,3,4,4,5,5,6,6,6,6,7,7,7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,
-  11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,
-  13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,14,14,14,14,
-  14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
-  14,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,
-  15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,16,16,16,16,16,16,16,16,16,16,16,16,16,
-  16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
-  16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
-  16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
-  17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
-  17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
-  17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17 };
-
-static const mz_uint8 s_tdefl_small_dist_extra[512] = {
-  0,0,0,0,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,
-  5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
-  6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
-  6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-  7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-  7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-  7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-  7,7,7,7,7,7,7,7 };
-
-static const mz_uint8 s_tdefl_large_dist_sym[128] = {
-  0,0,18,19,20,20,21,21,22,22,22,22,23,23,23,23,24,24,24,24,24,24,24,24,25,25,25,25,25,25,25,25,26,26,26,26,26,26,26,26,26,26,26,26,
-  26,26,26,26,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,
-  28,28,28,28,28,28,28,28,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29 };
-
-static const mz_uint8 s_tdefl_large_dist_extra[128] = {
-  0,0,8,8,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,
-  12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,
-  13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13 };
-
-// Radix sorts tdefl_sym_freq[] array by 16-bit key m_key. Returns ptr to sorted values.
-typedef struct { mz_uint16 m_key, m_sym_index; } tdefl_sym_freq;
-static tdefl_sym_freq* tdefl_radix_sort_syms(mz_uint num_syms, tdefl_sym_freq* pSyms0, tdefl_sym_freq* pSyms1)
-{
-  mz_uint32 total_passes = 2, pass_shift, pass, i, hist[256 * 2]; tdefl_sym_freq* pCur_syms = pSyms0, *pNew_syms = pSyms1; MZ_CLEAR_OBJ(hist);
-  for (i = 0; i < num_syms; i++) { mz_uint freq = pSyms0[i].m_key; hist[freq & 0xFF]++; hist[256 + ((freq >> 8) & 0xFF)]++; }
-  while ((total_passes > 1) && (num_syms == hist[(total_passes - 1) * 256])) total_passes--;
-  for (pass_shift = 0, pass = 0; pass < total_passes; pass++, pass_shift += 8)
-  {
-    const mz_uint32* pHist = &hist[pass << 8];
-    mz_uint offsets[256], cur_ofs = 0;
-    for (i = 0; i < 256; i++) { offsets[i] = cur_ofs; cur_ofs += pHist[i]; }
-    for (i = 0; i < num_syms; i++) pNew_syms[offsets[(pCur_syms[i].m_key >> pass_shift) & 0xFF]++] = pCur_syms[i];
-    { tdefl_sym_freq* t = pCur_syms; pCur_syms = pNew_syms; pNew_syms = t; }
-  }
-  return pCur_syms;
-}
-
-// tdefl_calculate_minimum_redundancy() originally written by: Alistair Moffat, [email protected], Jyrki Katajainen, [email protected], November 1996.
-static void tdefl_calculate_minimum_redundancy(tdefl_sym_freq *A, int n)
-{
-  int root, leaf, next, avbl, used, dpth;
-  if (n==0) return; else if (n==1) { A[0].m_key = 1; return; }
-  A[0].m_key += A[1].m_key; root = 0; leaf = 2;
-  for (next=1; next < n-1; next++)
-  {
-    if (leaf>=n || A[root].m_key<A[leaf].m_key) { A[next].m_key = A[root].m_key; A[root++].m_key = (mz_uint16)next; } else A[next].m_key = A[leaf++].m_key;
-    if (leaf>=n || (root<next && A[root].m_key<A[leaf].m_key)) { A[next].m_key = (mz_uint16)(A[next].m_key + A[root].m_key); A[root++].m_key = (mz_uint16)next; } else A[next].m_key = (mz_uint16)(A[next].m_key + A[leaf++].m_key);
-  }
-  A[n-2].m_key = 0; for (next=n-3; next>=0; next--) A[next].m_key = A[A[next].m_key].m_key+1;
-  avbl = 1; used = dpth = 0; root = n-2; next = n-1;
-  while (avbl>0)
-  {
-    while (root>=0 && (int)A[root].m_key==dpth) { used++; root--; }
-    while (avbl>used) { A[next--].m_key = (mz_uint16)(dpth); avbl--; }
-    avbl = 2*used; dpth++; used = 0;
-  }
-}
-
-// Limits canonical Huffman code table's max code size.
-enum { TDEFL_MAX_SUPPORTED_HUFF_CODESIZE = 32 };
-static void tdefl_huffman_enforce_max_code_size(int *pNum_codes, int code_list_len, int max_code_size)
-{
-  int i; mz_uint32 total = 0; if (code_list_len <= 1) return;
-  for (i = max_code_size + 1; i <= TDEFL_MAX_SUPPORTED_HUFF_CODESIZE; i++) pNum_codes[max_code_size] += pNum_codes[i];
-  for (i = max_code_size; i > 0; i--) total += (((mz_uint32)pNum_codes[i]) << (max_code_size - i));
-  while (total != (1UL << max_code_size))
-  {
-    pNum_codes[max_code_size]--;
-    for (i = max_code_size - 1; i > 0; i--) if (pNum_codes[i]) { pNum_codes[i]--; pNum_codes[i + 1] += 2; break; }
-    total--;
-  }
-}
-
-static void tdefl_optimize_huffman_table(tdefl_compressor *d, int table_num, int table_len, int code_size_limit, int static_table)
-{
-  int i, j, l, num_codes[1 + TDEFL_MAX_SUPPORTED_HUFF_CODESIZE]; mz_uint next_code[TDEFL_MAX_SUPPORTED_HUFF_CODESIZE + 1]; MZ_CLEAR_OBJ(num_codes);
-  if (static_table)
-  {
-    for (i = 0; i < table_len; i++) num_codes[d->m_huff_code_sizes[table_num][i]]++;
-  }
-  else
-  {
-    tdefl_sym_freq syms0[TDEFL_MAX_HUFF_SYMBOLS], syms1[TDEFL_MAX_HUFF_SYMBOLS], *pSyms;
-    int num_used_syms = 0;
-    const mz_uint16 *pSym_count = &d->m_huff_count[table_num][0];
-    for (i = 0; i < table_len; i++) if (pSym_count[i]) { syms0[num_used_syms].m_key = (mz_uint16)pSym_count[i]; syms0[num_used_syms++].m_sym_index = (mz_uint16)i; }
-
-    pSyms = tdefl_radix_sort_syms(num_used_syms, syms0, syms1); tdefl_calculate_minimum_redundancy(pSyms, num_used_syms);
-
-    for (i = 0; i < num_used_syms; i++) num_codes[pSyms[i].m_key]++;
-
-    tdefl_huffman_enforce_max_code_size(num_codes, num_used_syms, code_size_limit);
-
-    MZ_CLEAR_OBJ(d->m_huff_code_sizes[table_num]); MZ_CLEAR_OBJ(d->m_huff_codes[table_num]);
-    for (i = 1, j = num_used_syms; i <= code_size_limit; i++)
-      for (l = num_codes[i]; l > 0; l--) d->m_huff_code_sizes[table_num][pSyms[--j].m_sym_index] = (mz_uint8)(i);
-  }
-
-  next_code[1] = 0; for (j = 0, i = 2; i <= code_size_limit; i++) next_code[i] = j = ((j + num_codes[i - 1]) << 1);
-
-  for (i = 0; i < table_len; i++)
-  {
-    mz_uint rev_code = 0, code, code_size; if ((code_size = d->m_huff_code_sizes[table_num][i]) == 0) continue;
-    code = next_code[code_size]++; for (l = code_size; l > 0; l--, code >>= 1) rev_code = (rev_code << 1) | (code & 1);
-    d->m_huff_codes[table_num][i] = (mz_uint16)rev_code;
-  }
-}
-
-#define TDEFL_PUT_BITS(b, l) do { \
-  mz_uint bits = b; mz_uint len = l; MZ_ASSERT(bits <= ((1U << len) - 1U)); \
-  d->m_bit_buffer |= (bits << d->m_bits_in); d->m_bits_in += len; \
-  while (d->m_bits_in >= 8) { \
-    if (d->m_pOutput_buf < d->m_pOutput_buf_end) \
-      *d->m_pOutput_buf++ = (mz_uint8)(d->m_bit_buffer); \
-      d->m_bit_buffer >>= 8; \
-      d->m_bits_in -= 8; \
-  } \
-} MZ_MACRO_END
-
-#define TDEFL_RLE_PREV_CODE_SIZE() { if (rle_repeat_count) { \
-  if (rle_repeat_count < 3) { \
-    d->m_huff_count[2][prev_code_size] = (mz_uint16)(d->m_huff_count[2][prev_code_size] + rle_repeat_count); \
-    while (rle_repeat_count--) packed_code_sizes[num_packed_code_sizes++] = prev_code_size; \
-  } else { \
-    d->m_huff_count[2][16] = (mz_uint16)(d->m_huff_count[2][16] + 1); packed_code_sizes[num_packed_code_sizes++] = 16; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_repeat_count - 3); \
-} rle_repeat_count = 0; } }
-
-#define TDEFL_RLE_ZERO_CODE_SIZE() { if (rle_z_count) { \
-  if (rle_z_count < 3) { \
-    d->m_huff_count[2][0] = (mz_uint16)(d->m_huff_count[2][0] + rle_z_count); while (rle_z_count--) packed_code_sizes[num_packed_code_sizes++] = 0; \
-  } else if (rle_z_count <= 10) { \
-    d->m_huff_count[2][17] = (mz_uint16)(d->m_huff_count[2][17] + 1); packed_code_sizes[num_packed_code_sizes++] = 17; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_z_count - 3); \
-  } else { \
-    d->m_huff_count[2][18] = (mz_uint16)(d->m_huff_count[2][18] + 1); packed_code_sizes[num_packed_code_sizes++] = 18; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_z_count - 11); \
-} rle_z_count = 0; } }
-
-static mz_uint8 s_tdefl_packed_code_size_syms_swizzle[] = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 };
-
-static void tdefl_start_dynamic_block(tdefl_compressor *d)
-{
-  int num_lit_codes, num_dist_codes, num_bit_lengths; mz_uint i, total_code_sizes_to_pack, num_packed_code_sizes, rle_z_count, rle_repeat_count, packed_code_sizes_index;
-  mz_uint8 code_sizes_to_pack[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], packed_code_sizes[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], prev_code_size = 0xFF;
-
-  d->m_huff_count[0][256] = 1;
-
-  tdefl_optimize_huffman_table(d, 0, TDEFL_MAX_HUFF_SYMBOLS_0, 15, MZ_FALSE);
-  tdefl_optimize_huffman_table(d, 1, TDEFL_MAX_HUFF_SYMBOLS_1, 15, MZ_FALSE);
-
-  for (num_lit_codes = 286; num_lit_codes > 257; num_lit_codes--) if (d->m_huff_code_sizes[0][num_lit_codes - 1]) break;
-  for (num_dist_codes = 30; num_dist_codes > 1; num_dist_codes--) if (d->m_huff_code_sizes[1][num_dist_codes - 1]) break;
-
-  memcpy(code_sizes_to_pack, &d->m_huff_code_sizes[0][0], num_lit_codes);
-  memcpy(code_sizes_to_pack + num_lit_codes, &d->m_huff_code_sizes[1][0], num_dist_codes);
-  total_code_sizes_to_pack = num_lit_codes + num_dist_codes; num_packed_code_sizes = 0; rle_z_count = 0; rle_repeat_count = 0;
-
-  memset(&d->m_huff_count[2][0], 0, sizeof(d->m_huff_count[2][0]) * TDEFL_MAX_HUFF_SYMBOLS_2);
-  for (i = 0; i < total_code_sizes_to_pack; i++)
-  {
-    mz_uint8 code_size = code_sizes_to_pack[i];
-    if (!code_size)
-    {
-      TDEFL_RLE_PREV_CODE_SIZE();
-      if (++rle_z_count == 138) { TDEFL_RLE_ZERO_CODE_SIZE(); }
-    }
-    else
-    {
-      TDEFL_RLE_ZERO_CODE_SIZE();
-      if (code_size != prev_code_size)
-      {
-        TDEFL_RLE_PREV_CODE_SIZE();
-        d->m_huff_count[2][code_size] = (mz_uint16)(d->m_huff_count[2][code_size] + 1); packed_code_sizes[num_packed_code_sizes++] = code_size;
-      }
-      else if (++rle_repeat_count == 6)
-      {
-        TDEFL_RLE_PREV_CODE_SIZE();
-      }
-    }
-    prev_code_size = code_size;
-  }
-  if (rle_repeat_count) { TDEFL_RLE_PREV_CODE_SIZE(); } else { TDEFL_RLE_ZERO_CODE_SIZE(); }
-
-  tdefl_optimize_huffman_table(d, 2, TDEFL_MAX_HUFF_SYMBOLS_2, 7, MZ_FALSE);
-
-  TDEFL_PUT_BITS(2, 2);
-
-  TDEFL_PUT_BITS(num_lit_codes - 257, 5);
-  TDEFL_PUT_BITS(num_dist_codes - 1, 5);
-
-  for (num_bit_lengths = 18; num_bit_lengths >= 0; num_bit_lengths--) if (d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[num_bit_lengths]]) break;
-  num_bit_lengths = MZ_MAX(4, (num_bit_lengths + 1)); TDEFL_PUT_BITS(num_bit_lengths - 4, 4);
-  for (i = 0; (int)i < num_bit_lengths; i++) TDEFL_PUT_BITS(d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[i]], 3);
-
-  for (packed_code_sizes_index = 0; packed_code_sizes_index < num_packed_code_sizes; )
-  {
-    mz_uint code = packed_code_sizes[packed_code_sizes_index++]; MZ_ASSERT(code < TDEFL_MAX_HUFF_SYMBOLS_2);
-    TDEFL_PUT_BITS(d->m_huff_codes[2][code], d->m_huff_code_sizes[2][code]);
-    if (code >= 16) TDEFL_PUT_BITS(packed_code_sizes[packed_code_sizes_index++], "\02\03\07"[code - 16]);
-  }
-}
-
-static void tdefl_start_static_block(tdefl_compressor *d)
-{
-  mz_uint i;
-  mz_uint8 *p = &d->m_huff_code_sizes[0][0];
-
-  for (i = 0; i <= 143; ++i) *p++ = 8;
-  for ( ; i <= 255; ++i) *p++ = 9;
-  for ( ; i <= 279; ++i) *p++ = 7;
-  for ( ; i <= 287; ++i) *p++ = 8;
-
-  memset(d->m_huff_code_sizes[1], 5, 32);
-
-  tdefl_optimize_huffman_table(d, 0, 288, 15, MZ_TRUE);
-  tdefl_optimize_huffman_table(d, 1, 32, 15, MZ_TRUE);
-
-  TDEFL_PUT_BITS(1, 2);
-}
-
-static const mz_uint mz_bitmasks[17] = { 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF };
-
-static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d)
-{
-  mz_uint flags;
-  mz_uint8 *pLZ_codes;
-
-  flags = 1;
-  for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < d->m_pLZ_code_buf; flags >>= 1)
-  {
-    if (flags == 1)
-      flags = *pLZ_codes++ | 0x100;
-    if (flags & 1)
-    {
-      mz_uint sym, num_extra_bits;
-      mz_uint match_len = pLZ_codes[0], match_dist = (pLZ_codes[1] | (pLZ_codes[2] << 8)); pLZ_codes += 3;
-
-      MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
-      TDEFL_PUT_BITS(d->m_huff_codes[0][s_tdefl_len_sym[match_len]], d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
-      TDEFL_PUT_BITS(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], s_tdefl_len_extra[match_len]);
-
-      if (match_dist < 512)
-      {
-        sym = s_tdefl_small_dist_sym[match_dist]; num_extra_bits = s_tdefl_small_dist_extra[match_dist];
-      }
-      else
-      {
-        sym = s_tdefl_large_dist_sym[match_dist >> 8]; num_extra_bits = s_tdefl_large_dist_extra[match_dist >> 8];
-      }
-      MZ_ASSERT(d->m_huff_code_sizes[1][sym]);
-      TDEFL_PUT_BITS(d->m_huff_codes[1][sym], d->m_huff_code_sizes[1][sym]);
-      TDEFL_PUT_BITS(match_dist & mz_bitmasks[num_extra_bits], num_extra_bits);
-    }
-    else
-    {
-      mz_uint lit = *pLZ_codes++;
-      MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
-      TDEFL_PUT_BITS(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);
-    }
-  }
-
-  TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]);
-
-  return (d->m_pOutput_buf < d->m_pOutput_buf_end);
-}
-
-static mz_bool tdefl_compress_block(tdefl_compressor *d, mz_bool static_block)
-{
-  if (static_block)
-    tdefl_start_static_block(d);
-  else
-    tdefl_start_dynamic_block(d);
-  return tdefl_compress_lz_codes(d);
-}
-
-static int tdefl_flush_block(tdefl_compressor *d, int flush)
-{
-  mz_uint saved_bit_buf, saved_bits_in;
-  mz_uint8 *pSaved_output_buf;
-  mz_bool comp_block_succeeded = MZ_FALSE;
-  int n, use_raw_block = ((d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS) != 0) && (d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size;
-  mz_uint8 *pOutput_buf_start = ((d->m_pPut_buf_func == NULL) && ((*d->m_pOut_buf_size - d->m_out_buf_ofs) >= TDEFL_OUT_BUF_SIZE)) ? ((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs) : d->m_output_buf;
-
-  d->m_pOutput_buf = pOutput_buf_start;
-  d->m_pOutput_buf_end = d->m_pOutput_buf + TDEFL_OUT_BUF_SIZE - 16;
-
-  MZ_ASSERT(!d->m_output_flush_remaining);
-  d->m_output_flush_ofs = 0;
-  d->m_output_flush_remaining = 0;
-
-  *d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> d->m_num_flags_left);
-  d->m_pLZ_code_buf -= (d->m_num_flags_left == 8);
-
-  if ((d->m_flags & TDEFL_WRITE_ZLIB_HEADER) && (!d->m_block_index))
-  {
-    TDEFL_PUT_BITS(0x78, 8); TDEFL_PUT_BITS(0x01, 8);
-  }
-
-  TDEFL_PUT_BITS(flush == TDEFL_FINISH, 1);
-
-  pSaved_output_buf = d->m_pOutput_buf; saved_bit_buf = d->m_bit_buffer; saved_bits_in = d->m_bits_in;
-
-  if (!use_raw_block)
-    comp_block_succeeded = tdefl_compress_block(d, (d->m_flags & TDEFL_FORCE_ALL_STATIC_BLOCKS) || (d->m_total_lz_bytes < 48));
-
-  // If the block gets expanded, forget the current contents of the output buffer and send a raw block instead.
-  if ( ((use_raw_block) || ((d->m_total_lz_bytes) && ((d->m_pOutput_buf - pSaved_output_buf + 1U) >= d->m_total_lz_bytes))) &&
-       ((d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size) )
-  {
-    mz_uint i; d->m_pOutput_buf = pSaved_output_buf; d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in;
-    TDEFL_PUT_BITS(0, 2);
-    if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); }
-    for (i = 2; i; --i, d->m_total_lz_bytes ^= 0xFFFF)
-    {
-      TDEFL_PUT_BITS(d->m_total_lz_bytes & 0xFFFF, 16);
-    }
-    for (i = 0; i < d->m_total_lz_bytes; ++i)
-    {
-      TDEFL_PUT_BITS(d->m_dict[(d->m_lz_code_buf_dict_pos + i) & TDEFL_LZ_DICT_SIZE_MASK], 8);
-    }
-  }
-  // Check for the extremely unlikely (if not impossible) case of the compressed block not fitting into the output buffer when using dynamic codes.
-  else if (!comp_block_succeeded)
-  {
-    d->m_pOutput_buf = pSaved_output_buf; d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in;
-    tdefl_compress_block(d, MZ_TRUE);
-  }
-
-  if (flush)
-  {
-    if (flush == TDEFL_FINISH)
-    {
-      if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); }
-      if (d->m_flags & TDEFL_WRITE_ZLIB_HEADER) { mz_uint i, a = d->m_adler32; for (i = 0; i < 4; i++) { TDEFL_PUT_BITS((a >> 24) & 0xFF, 8); a <<= 8; } }
-    }
-    else
-    {
-      mz_uint i, z = 0; TDEFL_PUT_BITS(0, 3); if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); } for (i = 2; i; --i, z ^= 0xFFFF) { TDEFL_PUT_BITS(z & 0xFFFF, 16); }
-    }
-  }
-
-  MZ_ASSERT(d->m_pOutput_buf < d->m_pOutput_buf_end);
-
-  memset(&d->m_huff_count[0][0], 0, sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0);
-  memset(&d->m_huff_count[1][0], 0, sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1);
-
-  d->m_pLZ_code_buf = d->m_lz_code_buf + 1; d->m_pLZ_flags = d->m_lz_code_buf; d->m_num_flags_left = 8; d->m_lz_code_buf_dict_pos += d->m_total_lz_bytes; d->m_total_lz_bytes = 0; d->m_block_index++;
-
-  if ((n = (int)(d->m_pOutput_buf - pOutput_buf_start)) != 0)
-  {
-    if (d->m_pPut_buf_func)
-    {
-      *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *)d->m_pIn_buf;
-      if (!(*d->m_pPut_buf_func)(d->m_output_buf, n, d->m_pPut_buf_user))
-        return (d->m_prev_return_status = TDEFL_STATUS_PUT_BUF_FAILED);
-    }
-    else if (pOutput_buf_start == d->m_output_buf)
-    {
-      int bytes_to_copy = (int)MZ_MIN((size_t)n, (size_t)(*d->m_pOut_buf_size - d->m_out_buf_ofs));
-      memcpy((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf, bytes_to_copy);
-      d->m_out_buf_ofs += bytes_to_copy;
-      if ((n -= bytes_to_copy) != 0)
-      {
-        d->m_output_flush_ofs = bytes_to_copy;
-        d->m_output_flush_remaining = n;
-      }
-    }
-    else
-    {
-      d->m_out_buf_ofs += n;
-    }
-  }
-
-  return d->m_output_flush_remaining;
-}
-
-static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor *d, mz_uint lookahead_pos, mz_uint max_dist, mz_uint max_match_len, mz_uint *pMatch_dist, mz_uint *pMatch_len)
-{
-  mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, match_len = *pMatch_len, probe_pos = pos, next_probe_pos, probe_len;
-  mz_uint num_probes_left = d->m_max_probes[match_len >= 32];
-  const mz_uint8 *s = d->m_dict + pos, *p, *q;
-  mz_uint8 c0 = d->m_dict[pos + match_len], c1 = d->m_dict[pos + match_len - 1];
-  MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); if (max_match_len <= match_len) return;
-  for ( ; ; )
-  {
-    for ( ; ; )
-    {
-      if (--num_probes_left == 0) return;
-      #define TDEFL_PROBE \
-        next_probe_pos = d->m_next[probe_pos]; \
-        if ((!next_probe_pos) || ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) return; \
-        probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \
-        if ((d->m_dict[probe_pos + match_len] == c0) && (d->m_dict[probe_pos + match_len - 1] == c1)) break;
-      TDEFL_PROBE; TDEFL_PROBE; TDEFL_PROBE;
-    }
-    if (!dist) break;
-    p = s; q = d->m_dict + probe_pos;
-    for (probe_len = 0; probe_len < max_match_len; probe_len++) if (*p++ != *q++) break;
-    if (probe_len > match_len)
-    {
-      *pMatch_dist = dist; if ((*pMatch_len = match_len = probe_len) == max_match_len) return;
-      c0 = d->m_dict[pos + match_len]; c1 = d->m_dict[pos + match_len - 1];
-    }
-  }
-}
-
-static MZ_FORCEINLINE void tdefl_record_literal(tdefl_compressor *d, mz_uint8 lit)
-{
-  d->m_total_lz_bytes++;
-  *d->m_pLZ_code_buf++ = lit;
-  *d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> 1); if (--d->m_num_flags_left == 0) { d->m_num_flags_left = 8; d->m_pLZ_flags = d->m_pLZ_code_buf++; }
-  d->m_huff_count[0][lit]++;
-}
-
-static MZ_FORCEINLINE void tdefl_record_match(tdefl_compressor *d, mz_uint match_len, mz_uint match_dist)
-{
-  mz_uint32 s0, s1;
-
-  MZ_ASSERT((match_len >= TDEFL_MIN_MATCH_LEN) && (match_dist >= 1) && (match_dist <= TDEFL_LZ_DICT_SIZE));
-
-  d->m_total_lz_bytes += match_len;
-
-  d->m_pLZ_code_buf[0] = (mz_uint8)(match_len - TDEFL_MIN_MATCH_LEN);
-
-  match_dist -= 1;
-  d->m_pLZ_code_buf[1] = (mz_uint8)(match_dist & 0xFF);
-  d->m_pLZ_code_buf[2] = (mz_uint8)(match_dist >> 8); d->m_pLZ_code_buf += 3;
-
-  *d->m_pLZ_flags = (mz_uint8)((*d->m_pLZ_flags >> 1) | 0x80); if (--d->m_num_flags_left == 0) { d->m_num_flags_left = 8; d->m_pLZ_flags = d->m_pLZ_code_buf++; }
-
-  s0 = s_tdefl_small_dist_sym[match_dist & 511]; s1 = s_tdefl_large_dist_sym[(match_dist >> 8) & 127];
-  d->m_huff_count[1][(match_dist < 512) ? s0 : s1]++;
-
-  if (match_len >= TDEFL_MIN_MATCH_LEN) d->m_huff_count[0][s_tdefl_len_sym[match_len - TDEFL_MIN_MATCH_LEN]]++;
-}
-
-static mz_bool tdefl_compress_normal(tdefl_compressor *d)
-{
-  const mz_uint8 *pSrc = d->m_pSrc; size_t src_buf_left = d->m_src_buf_left;
-  tdefl_flush flush = d->m_flush;
-
-  while ((src_buf_left) || ((flush) && (d->m_lookahead_size)))
-  {
-    mz_uint len_to_move, cur_match_dist, cur_match_len, cur_pos;
-    // Update dictionary and hash chains. Keeps the lookahead size equal to TDEFL_MAX_MATCH_LEN.
-    if ((d->m_lookahead_size + d->m_dict_size) >= (TDEFL_MIN_MATCH_LEN - 1))
-    {
-      mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK, ins_pos = d->m_lookahead_pos + d->m_lookahead_size - 2;
-      mz_uint hash = (d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] << TDEFL_LZ_HASH_SHIFT) ^ d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK];
-      mz_uint num_bytes_to_process = (mz_uint)MZ_MIN(src_buf_left, TDEFL_MAX_MATCH_LEN - d->m_lookahead_size);
-      const mz_uint8 *pSrc_end = pSrc + num_bytes_to_process;
-      src_buf_left -= num_bytes_to_process;
-      d->m_lookahead_size += num_bytes_to_process;
-      while (pSrc != pSrc_end)
-      {
-        mz_uint8 c = *pSrc++; d->m_dict[dst_pos] = c; if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c;
-        hash = ((hash << TDEFL_LZ_HASH_SHIFT) ^ c) & (TDEFL_LZ_HASH_SIZE - 1);
-        d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash]; d->m_hash[hash] = (mz_uint16)(ins_pos);
-        dst_pos = (dst_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK; ins_pos++;
-      }
-    }
-    else
-    {
-      while ((src_buf_left) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN))
-      {
-        mz_uint8 c = *pSrc++;
-        mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK;
-        src_buf_left--;
-        d->m_dict[dst_pos] = c;
-        if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1))
-          d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c;
-        if ((++d->m_lookahead_size + d->m_dict_size) >= TDEFL_MIN_MATCH_LEN)
-        {
-          mz_uint ins_pos = d->m_lookahead_pos + (d->m_lookahead_size - 1) - 2;
-          mz_uint hash = ((d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] << (TDEFL_LZ_HASH_SHIFT * 2)) ^ (d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK] << TDEFL_LZ_HASH_SHIFT) ^ c) & (TDEFL_LZ_HASH_SIZE - 1);
-          d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash]; d->m_hash[hash] = (mz_uint16)(ins_pos);
-        }
-      }
-    }
-    d->m_dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - d->m_lookahead_size, d->m_dict_size);
-    if ((!flush) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN))
-      break;
-
-    // Simple lazy/greedy parsing state machine.
-    len_to_move = 1; cur_match_dist = 0; cur_match_len = d->m_saved_match_len ? d->m_saved_match_len : (TDEFL_MIN_MATCH_LEN - 1); cur_pos = d->m_lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK;
-    if (d->m_flags & (TDEFL_RLE_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS))
-    {
-      if ((d->m_dict_size) && (!(d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS)))
-      {
-        mz_uint8 c = d->m_dict[(cur_pos - 1) & TDEFL_LZ_DICT_SIZE_MASK];
-        cur_match_len = 0; while (cur_match_len < d->m_lookahead_size) { if (d->m_dict[cur_pos + cur_match_len] != c) break; cur_match_len++; }
-        if (cur_match_len < TDEFL_MIN_MATCH_LEN) cur_match_len = 0; else cur_match_dist = 1;
-      }
-    }
-    else
-    {
-      tdefl_find_match(d, d->m_lookahead_pos, d->m_dict_size, d->m_lookahead_size, &cur_match_dist, &cur_match_len);
-    }
-    if (((cur_match_len == TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 8U*1024U)) || (cur_pos == cur_match_dist) || ((d->m_flags & TDEFL_FILTER_MATCHES) && (cur_match_len <= 5)))
-    {
-      cur_match_dist = cur_match_len = 0;
-    }
-    if (d->m_saved_match_len)
-    {
-      if (cur_match_len > d->m_saved_match_len)
-      {
-        tdefl_record_literal(d, (mz_uint8)d->m_saved_lit);
-        if (cur_match_len >= 128)
-        {
-          tdefl_record_match(d, cur_match_len, cur_match_dist);
-          d->m_saved_match_len = 0; len_to_move = cur_match_len;
-        }
-        else
-        {
-          d->m_saved_lit = d->m_dict[cur_pos]; d->m_saved_match_dist = cur_match_dist; d->m_saved_match_len = cur_match_len;
-        }
-      }
-      else
-      {
-        tdefl_record_match(d, d->m_saved_match_len, d->m_saved_match_dist);
-        len_to_move = d->m_saved_match_len - 1; d->m_saved_match_len = 0;
-      }
-    }
-    else if (!cur_match_dist)
-      tdefl_record_literal(d, d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]);
-    else if ((d->m_greedy_parsing) || (d->m_flags & TDEFL_RLE_MATCHES) || (cur_match_len >= 128))
-    {
-      tdefl_record_match(d, cur_match_len, cur_match_dist);
-      len_to_move = cur_match_len;
-    }
-    else
-    {
-      d->m_saved_lit = d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]; d->m_saved_match_dist = cur_match_dist; d->m_saved_match_len = cur_match_len;
-    }
-    // Move the lookahead forward by len_to_move bytes.
-    d->m_lookahead_pos += len_to_move;
-    MZ_ASSERT(d->m_lookahead_size >= len_to_move);
-    d->m_lookahead_size -= len_to_move;
-    d->m_dict_size = MZ_MIN(d->m_dict_size + len_to_move, (int)TDEFL_LZ_DICT_SIZE);
-    // Check if it's time to flush the current LZ codes to the internal output buffer.
-    if ( (d->m_pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) ||
-         ( (d->m_total_lz_bytes > 31*1024) && (((((mz_uint)(d->m_pLZ_code_buf - d->m_lz_code_buf) * 115) >> 7) >= d->m_total_lz_bytes) || (d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS))) )
-    {
-      int n;
-      d->m_pSrc = pSrc; d->m_src_buf_left = src_buf_left;
-      if ((n = tdefl_flush_block(d, 0)) != 0)
-        return (n < 0) ? MZ_FALSE : MZ_TRUE;
-    }
-  }
-
-  d->m_pSrc = pSrc; d->m_src_buf_left = src_buf_left;
-  return MZ_TRUE;
-}
-
-static tdefl_status tdefl_flush_output_buffer(tdefl_compressor *d)
-{
-  if (d->m_pIn_buf_size)
-  {
-    *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *)d->m_pIn_buf;
-  }
-
-  if (d->m_pOut_buf_size)
-  {
-    size_t n = MZ_MIN(*d->m_pOut_buf_size - d->m_out_buf_ofs, d->m_output_flush_remaining);
-    memcpy((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf + d->m_output_flush_ofs, n);
-    d->m_output_flush_ofs += (mz_uint)n;
-    d->m_output_flush_remaining -= (mz_uint)n;
-    d->m_out_buf_ofs += n;
-
-    *d->m_pOut_buf_size = d->m_out_buf_ofs;
-  }
-
-  return (d->m_finished && !d->m_output_flush_remaining) ? TDEFL_STATUS_DONE : TDEFL_STATUS_OKAY;
-}
-
-tdefl_status tdefl_compress(tdefl_compressor *d, const void *pIn_buf, size_t *pIn_buf_size, void *pOut_buf, size_t *pOut_buf_size, tdefl_flush flush)
-{
-  if (!d)
-  {
-    if (pIn_buf_size) *pIn_buf_size = 0;
-    if (pOut_buf_size) *pOut_buf_size = 0;
-    return TDEFL_STATUS_BAD_PARAM;
-  }
-
-  d->m_pIn_buf = pIn_buf; d->m_pIn_buf_size = pIn_buf_size;
-  d->m_pOut_buf = pOut_buf; d->m_pOut_buf_size = pOut_buf_size;
-  d->m_pSrc = (const mz_uint8 *)(pIn_buf); d->m_src_buf_left = pIn_buf_size ? *pIn_buf_size : 0;
-  d->m_out_buf_ofs = 0;
-  d->m_flush = flush;
-
-  if ( ((d->m_pPut_buf_func != NULL) == ((pOut_buf != NULL) || (pOut_buf_size != NULL))) || (d->m_prev_return_status != TDEFL_STATUS_OKAY) ||
-        (d->m_wants_to_finish && (flush != TDEFL_FINISH)) || (pIn_buf_size && *pIn_buf_size && !pIn_buf) || (pOut_buf_size && *pOut_buf_size && !pOut_buf) )
-  {
-    if (pIn_buf_size) *pIn_buf_size = 0;
-    if (pOut_buf_size) *pOut_buf_size = 0;
-    return (d->m_prev_return_status = TDEFL_STATUS_BAD_PARAM);
-  }
-  d->m_wants_to_finish |= (flush == TDEFL_FINISH);
-
-  if ((d->m_output_flush_remaining) || (d->m_finished))
-    return (d->m_prev_return_status = tdefl_flush_output_buffer(d));
-
-  if (!tdefl_compress_normal(d))
-    return d->m_prev_return_status;
-
-  if ((d->m_flags & (TDEFL_WRITE_ZLIB_HEADER | TDEFL_COMPUTE_ADLER32)) && (pIn_buf))
-    d->m_adler32 = (mz_uint32)mz_adler32(d->m_adler32, (const mz_uint8 *)pIn_buf, d->m_pSrc - (const mz_uint8 *)pIn_buf);
-
-  if ((flush) && (!d->m_lookahead_size) && (!d->m_src_buf_left) && (!d->m_output_flush_remaining))
-  {
-    if (tdefl_flush_block(d, flush) < 0)
-      return d->m_prev_return_status;
-    d->m_finished = (flush == TDEFL_FINISH);
-    if (flush == TDEFL_FULL_FLUSH) { MZ_CLEAR_OBJ(d->m_hash); MZ_CLEAR_OBJ(d->m_next); d->m_dict_size = 0; }
-  }
-
-  return (d->m_prev_return_status = tdefl_flush_output_buffer(d));
-}
-
-tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush)
-{
-  MZ_ASSERT(d->m_pPut_buf_func); return tdefl_compress(d, pIn_buf, &in_buf_size, NULL, NULL, flush);
-}
-
-tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags)
-{
-  d->m_pPut_buf_func = pPut_buf_func; d->m_pPut_buf_user = pPut_buf_user;
-  d->m_flags = (mz_uint)(flags); d->m_max_probes[0] = 1 + ((flags & 0xFFF) + 2) / 3; d->m_greedy_parsing = (flags & TDEFL_GREEDY_PARSING_FLAG) != 0;
-  d->m_max_probes[1] = 1 + (((flags & 0xFFF) >> 2) + 2) / 3;
-  if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) MZ_CLEAR_OBJ(d->m_hash);
-  d->m_lookahead_pos = d->m_lookahead_size = d->m_dict_size = d->m_total_lz_bytes = d->m_lz_code_buf_dict_pos = d->m_bits_in = 0;
-  d->m_output_flush_ofs = d->m_output_flush_remaining = d->m_finished = d->m_block_index = d->m_bit_buffer = d->m_wants_to_finish = 0;
-  d->m_pLZ_code_buf = d->m_lz_code_buf + 1; d->m_pLZ_flags = d->m_lz_code_buf; d->m_num_flags_left = 8;
-  d->m_pOutput_buf = d->m_output_buf; d->m_pOutput_buf_end = d->m_output_buf; d->m_prev_return_status = TDEFL_STATUS_OKAY;
-  d->m_saved_match_dist = d->m_saved_match_len = d->m_saved_lit = 0; d->m_adler32 = 1;
-  d->m_pIn_buf = NULL; d->m_pOut_buf = NULL;
-  d->m_pIn_buf_size = NULL; d->m_pOut_buf_size = NULL;
-  d->m_flush = TDEFL_NO_FLUSH; d->m_pSrc = NULL; d->m_src_buf_left = 0; d->m_out_buf_ofs = 0;
-  memset(&d->m_huff_count[0][0], 0, sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0);
-  memset(&d->m_huff_count[1][0], 0, sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1);
-  return TDEFL_STATUS_OKAY;
-}
-
-tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d)
-{
-  return d->m_prev_return_status;
-}
-
-mz_uint32 tdefl_get_adler32(tdefl_compressor *d)
-{
-  return d->m_adler32;
-}
-
-mz_bool tdefl_compress_mem_to_output(const void *pBuf, size_t buf_len, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags)
-{
-  tdefl_compressor *pComp; mz_bool succeeded; if (((buf_len) && (!pBuf)) || (!pPut_buf_func)) return MZ_FALSE;
-  pComp = (tdefl_compressor*)MZ_MALLOC(sizeof(tdefl_compressor)); if (!pComp) return MZ_FALSE;
-  succeeded = (tdefl_init(pComp, pPut_buf_func, pPut_buf_user, flags) == TDEFL_STATUS_OKAY);
-  succeeded = succeeded && (tdefl_compress_buffer(pComp, pBuf, buf_len, TDEFL_FINISH) == TDEFL_STATUS_DONE);
-  MZ_FREE(pComp); return succeeded;
-}
-
-typedef struct
-{
-  size_t m_size, m_capacity;
-  mz_uint8 *m_pBuf;
-} tdefl_output_buffer;
-
-static mz_bool tdefl_output_buffer_putter(const void *pBuf, int len, void *pUser)
-{
-  tdefl_output_buffer *p = (tdefl_output_buffer *)pUser;
-  size_t new_size = p->m_size + len;
-  if (new_size > p->m_capacity) return MZ_FALSE;
-  memcpy((mz_uint8*)p->m_pBuf + p->m_size, pBuf, len); p->m_size = new_size;
-  return MZ_TRUE;
-}
-
-size_t tdefl_compress_bound(size_t source_len)
-{
-  // This is really over conservative. (And lame, but it's actually pretty tricky to compute a true upper bound given the way tdefl's blocking works.)
-  return MZ_MAX(128 + (source_len * 110) / 100, 128 + source_len + ((source_len / (31 * 1024)) + 1) * 5);
-}
-
-size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags)
-{
-  tdefl_output_buffer out_buf; MZ_CLEAR_OBJ(out_buf);
-  if (!pOut_buf) return 0;
-  out_buf.m_pBuf = (mz_uint8*)pOut_buf; out_buf.m_capacity = out_buf_len;
-  if (!tdefl_compress_mem_to_output(pSrc_buf, src_buf_len, tdefl_output_buffer_putter, &out_buf, flags)) return 0;
-  return out_buf.m_size;
-}
-
-static const mz_uint s_tdefl_num_probes[11] = { 0, 1, 6, 32,  16, 32, 128, 256,  512, 768, 1500 };
-
-// level may actually range from [0,10] (10 is a "hidden" max level, where we want a bit more compression and it's fine if throughput to fall off a cliff on some files).
-mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy)
-{
-  mz_uint comp_flags = s_tdefl_num_probes[(level >= 0) ? MZ_MIN(10, level) : MZ_DEFAULT_LEVEL] | ((level <= 3) ? TDEFL_GREEDY_PARSING_FLAG : 0);
-  if (window_bits > 0) comp_flags |= TDEFL_WRITE_ZLIB_HEADER;
-
-  if (!level) comp_flags |= TDEFL_FORCE_ALL_RAW_BLOCKS;
-  else if (strategy == MZ_FILTERED) comp_flags |= TDEFL_FILTER_MATCHES;
-  else if (strategy == MZ_HUFFMAN_ONLY) comp_flags &= ~TDEFL_MAX_PROBES_MASK;
-  else if (strategy == MZ_FIXED) comp_flags |= TDEFL_FORCE_ALL_STATIC_BLOCKS;
-  else if (strategy == MZ_RLE) comp_flags |= TDEFL_RLE_MATCHES;
-
-  return comp_flags;
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // MINIZ_HEADER_FILE_ONLY
-
-/*
-  This is free and unencumbered software released into the public domain.
-
-  Anyone is free to copy, modify, publish, use, compile, sell, or
-  distribute this software, either in source code form or as a compiled
-  binary, for any purpose, commercial or non-commercial, and by any
-  means.
-
-  In jurisdictions that recognize copyright laws, the author or authors
-  of this software dedicate any and all copyright interest in the
-  software to the public domain. We make this dedication for the benefit
-  of the public at large and to the detriment of our heirs and
-  successors. We intend this dedication to be an overt act of
-  relinquishment in perpetuity of all present and future rights to this
-  software under copyright law.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
-  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-  OTHER DEALINGS IN THE SOFTWARE.
-
-  For more information, please refer to <http://unlicense.org/>
-*/

3rdparty/meshoptimizer/demo/miniz.h

@@ -1,298 +0,0 @@
-/* This is miniz.c with removal of all zlib/zip like functionality - only tdefl/tinfl APIs are left
-   For maximum compatibility unaligned load/store and 64-bit register paths have been removed so this is slower than miniz.c
-
-   miniz.c v1.15 - public domain deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing
-   See "unlicense" statement at the end of this file.
-   Rich Geldreich <[email protected]>, last updated Oct. 13, 2013
-   Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt
-*/
-
-#ifndef MINIZ_HEADER_INCLUDED
-#define MINIZ_HEADER_INCLUDED
-
-#include <stdlib.h>
-
-// Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc.
-// Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc
-// callbacks to the zlib and archive API's, and a few stand-alone helper API's which don't provide custom user
-// functions (such as tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work.
-//#define MINIZ_NO_MALLOC
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// mz_free() internally uses the MZ_FREE() macro (which by default calls free() unless you've modified the MZ_MALLOC macro) to release a block allocated from the heap.
-void mz_free(void *p);
-
-// Compression strategies.
-enum { MZ_DEFAULT_STRATEGY = 0, MZ_FILTERED = 1, MZ_HUFFMAN_ONLY = 2, MZ_RLE = 3, MZ_FIXED = 4 };
-
-// Compression levels: 0-9 are the standard zlib-style levels, 10 is best possible compression (not zlib compatible, and may be very slow), MZ_DEFAULT_COMPRESSION=MZ_DEFAULT_LEVEL.
-enum { MZ_NO_COMPRESSION = 0, MZ_BEST_SPEED = 1, MZ_BEST_COMPRESSION = 9, MZ_UBER_COMPRESSION = 10, MZ_DEFAULT_LEVEL = 6, MZ_DEFAULT_COMPRESSION = -1 };
-
-// Window bits
-#define MZ_DEFAULT_WINDOW_BITS 15
-
-// Method
-#define MZ_DEFLATED 8
-
-// ------------------- Types and macros
-
-typedef unsigned char mz_uint8;
-typedef signed short mz_int16;
-typedef unsigned short mz_uint16;
-typedef unsigned int mz_uint32;
-typedef unsigned int mz_uint;
-typedef long long mz_int64;
-typedef unsigned long long mz_uint64;
-typedef int mz_bool;
-
-#define MZ_FALSE (0)
-#define MZ_TRUE (1)
-
-// An attempt to work around MSVC's spammy "warning C4127: conditional expression is constant" message.
-#ifdef _MSC_VER
-   #define MZ_MACRO_END while (0, 0)
-#else
-   #define MZ_MACRO_END while (0)
-#endif
-
-#define MZ_ADLER32_INIT (1)
-// mz_adler32() returns the initial adler-32 value to use when called with ptr==NULL.
-mz_uint32 mz_adler32(mz_uint32 adler, const unsigned char *ptr, size_t buf_len);
-
-// ------------------- Low-level Decompression API Definitions
-
-// Decompression flags used by tinfl_decompress().
-// TINFL_FLAG_PARSE_ZLIB_HEADER: If set, the input has a valid zlib header and ends with an adler32 checksum (it's a valid zlib stream). Otherwise, the input is a raw deflate stream.
-// TINFL_FLAG_HAS_MORE_INPUT: If set, there are more input bytes available beyond the end of the supplied input buffer. If clear, the input buffer contains all remaining input.
-// TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF: If set, the output buffer is large enough to hold the entire decompressed stream. If clear, the output buffer is at least the size of the dictionary (typically 32KB).
-// TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes.
-enum
-{
-  TINFL_FLAG_PARSE_ZLIB_HEADER = 1,
-  TINFL_FLAG_HAS_MORE_INPUT = 2,
-  TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4,
-  TINFL_FLAG_COMPUTE_ADLER32 = 8
-};
-
-// High level decompression functions:
-// tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory.
-// Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success.
-#define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1))
-size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags);
-
-// tinfl_decompress_mem_to_callback() decompresses a block in memory to an internal 32KB buffer, and a user provided callback function will be called to flush the buffer.
-// Returns 1 on success or 0 on failure.
-typedef int (*tinfl_put_buf_func_ptr)(const void* pBuf, int len, void *pUser);
-int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size, tinfl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags);
-
-struct tinfl_decompressor_tag; typedef struct tinfl_decompressor_tag tinfl_decompressor;
-
-// Max size of LZ dictionary.
-#define TINFL_LZ_DICT_SIZE 32768
-
-// Return status.
-typedef enum
-{
-  TINFL_STATUS_BAD_PARAM = -3,
-  TINFL_STATUS_ADLER32_MISMATCH = -2,
-  TINFL_STATUS_FAILED = -1,
-  TINFL_STATUS_DONE = 0,
-  TINFL_STATUS_NEEDS_MORE_INPUT = 1,
-  TINFL_STATUS_HAS_MORE_OUTPUT = 2
-} tinfl_status;
-
-// Initializes the decompressor to its initial state.
-#define tinfl_init(r) do { (r)->m_state = 0; } MZ_MACRO_END
-#define tinfl_get_adler32(r) (r)->m_check_adler32
-
-// Main low-level decompressor coroutine function. This is the only function actually needed for decompression. All the other functions are just high-level helpers for improved usability.
-// This is a universal API, i.e. it can be used as a building block to build any desired higher level decompression API. In the limit case, it can be called once per every byte input or output.
-tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_next, size_t *pIn_buf_size, mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, const mz_uint32 decomp_flags);
-
-// Internal/private bits follow.
-enum
-{
-  TINFL_MAX_HUFF_TABLES = 3, TINFL_MAX_HUFF_SYMBOLS_0 = 288, TINFL_MAX_HUFF_SYMBOLS_1 = 32, TINFL_MAX_HUFF_SYMBOLS_2 = 19,
-  TINFL_FAST_LOOKUP_BITS = 10, TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS
-};
-
-typedef struct
-{
-  mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0];
-  mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2];
-} tinfl_huff_table;
-
-typedef mz_uint32 tinfl_bit_buf_t;
-#define TINFL_BITBUF_SIZE (32)
-
-struct tinfl_decompressor_tag
-{
-  mz_uint32 m_state, m_num_bits, m_zhdr0, m_zhdr1, m_z_adler32, m_final, m_type, m_check_adler32, m_dist, m_counter, m_num_extra, m_table_sizes[TINFL_MAX_HUFF_TABLES];
-  tinfl_bit_buf_t m_bit_buf;
-  size_t m_dist_from_out_buf_start;
-  tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES];
-  mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137];
-};
-
-// ------------------- Low-level Compression API Definitions
-
-// Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly slower, and raw/dynamic blocks will be output more frequently).
-#define TDEFL_LESS_MEMORY 0
-
-// tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search):
-// TDEFL_DEFAULT_MAX_PROBES: The compressor defaults to 128 dictionary probes per dictionary search. 0=Huffman only, 1=Huffman+LZ (fastest/crap compression), 4095=Huffman+LZ (slowest/best compression).
-enum
-{
-  TDEFL_HUFFMAN_ONLY = 0, TDEFL_DEFAULT_MAX_PROBES = 128, TDEFL_MAX_PROBES_MASK = 0xFFF
-};
-
-// TDEFL_WRITE_ZLIB_HEADER: If set, the compressor outputs a zlib header before the deflate data, and the Adler-32 of the source data at the end. Otherwise, you'll get raw deflate data.
-// TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers).
-// TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing.
-// TDEFL_NONDETERMINISTIC_PARSING_FLAG: Enable to decrease the compressor's initialization time to the minimum, but the output may vary from run to run given the same input (depending on the contents of memory).
-// TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1)
-// TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled.
-// TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables.
-// TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks.
-// The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK).
-enum
-{
-  TDEFL_WRITE_ZLIB_HEADER             = 0x01000,
-  TDEFL_COMPUTE_ADLER32               = 0x02000,
-  TDEFL_GREEDY_PARSING_FLAG           = 0x04000,
-  TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000,
-  TDEFL_RLE_MATCHES                   = 0x10000,
-  TDEFL_FILTER_MATCHES                = 0x20000,
-  TDEFL_FORCE_ALL_STATIC_BLOCKS       = 0x40000,
-  TDEFL_FORCE_ALL_RAW_BLOCKS          = 0x80000
-};
-
-// High level compression functions:
-
-
-// tdefl_compress_bound() returns a (very) conservative upper bound on the amount of data that could be generated by calling tdefl_compress_*().
-size_t tdefl_compress_bound(size_t source_len);
-
-// tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory.
-// Returns 0 on failure.
-size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags);
-
-// Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time.
-typedef mz_bool (*tdefl_put_buf_func_ptr)(const void* pBuf, int len, void *pUser);
-
-// tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally.
-mz_bool tdefl_compress_mem_to_output(const void *pBuf, size_t buf_len, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags);
-
-enum { TDEFL_MAX_HUFF_TABLES = 3, TDEFL_MAX_HUFF_SYMBOLS_0 = 288, TDEFL_MAX_HUFF_SYMBOLS_1 = 32, TDEFL_MAX_HUFF_SYMBOLS_2 = 19, TDEFL_LZ_DICT_SIZE = 32768, TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1, TDEFL_MIN_MATCH_LEN = 3, TDEFL_MAX_MATCH_LEN = 258 };
-
-// TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed output block (using static/fixed Huffman codes).
-#if TDEFL_LESS_MEMORY
-enum { TDEFL_LZ_CODE_BUF_SIZE = 24 * 1024, TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13 ) / 10, TDEFL_MAX_HUFF_SYMBOLS = 288, TDEFL_LZ_HASH_BITS = 12, TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS };
-#else
-enum { TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024, TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13 ) / 10, TDEFL_MAX_HUFF_SYMBOLS = 288, TDEFL_LZ_HASH_BITS = 15, TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS };
-#endif
-
-// The low-level tdefl functions below may be used directly if the above helper functions aren't flexible enough. The low-level functions don't make any heap allocations, unlike the above helper functions.
-typedef enum
-{
-  TDEFL_STATUS_BAD_PARAM = -2,
-  TDEFL_STATUS_PUT_BUF_FAILED = -1,
-  TDEFL_STATUS_OKAY = 0,
-  TDEFL_STATUS_DONE = 1,
-} tdefl_status;
-
-// Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums
-typedef enum
-{
-  TDEFL_NO_FLUSH = 0,
-  TDEFL_SYNC_FLUSH = 2,
-  TDEFL_FULL_FLUSH = 3,
-  TDEFL_FINISH = 4
-} tdefl_flush;
-
-// tdefl's compression state structure.
-typedef struct
-{
-  tdefl_put_buf_func_ptr m_pPut_buf_func;
-  void *m_pPut_buf_user;
-  mz_uint m_flags, m_max_probes[2];
-  int m_greedy_parsing;
-  mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size;
-  mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end;
-  mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer;
-  mz_uint m_saved_match_dist, m_saved_match_len, m_saved_lit, m_output_flush_ofs, m_output_flush_remaining, m_finished, m_block_index, m_wants_to_finish;
-  tdefl_status m_prev_return_status;
-  const void *m_pIn_buf;
-  void *m_pOut_buf;
-  size_t *m_pIn_buf_size, *m_pOut_buf_size;
-  tdefl_flush m_flush;
-  const mz_uint8 *m_pSrc;
-  size_t m_src_buf_left, m_out_buf_ofs;
-  mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1];
-  mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
-  mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
-  mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
-  mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE];
-  mz_uint16 m_next[TDEFL_LZ_DICT_SIZE];
-  mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE];
-  mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE];
-} tdefl_compressor;
-
-// Initializes the compressor.
-// There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory.
-// pBut_buf_func: If NULL, output data will be supplied to the specified callback. In this case, the user should call the tdefl_compress_buffer() API for compression.
-// If pBut_buf_func is NULL the user should always call the tdefl_compress() API.
-// flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.)
-tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags);
-
-// Compresses a block of data, consuming as much of the specified input buffer as possible, and writing as much compressed data to the specified output buffer as possible.
-tdefl_status tdefl_compress(tdefl_compressor *d, const void *pIn_buf, size_t *pIn_buf_size, void *pOut_buf, size_t *pOut_buf_size, tdefl_flush flush);
-
-// tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr.
-// tdefl_compress_buffer() always consumes the entire input buffer.
-tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush);
-
-tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d);
-mz_uint32 tdefl_get_adler32(tdefl_compressor *d);
-
-// Create tdefl_compress() flags given zlib-style compression parameters.
-// level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files)
-// window_bits may be -15 (raw deflate) or 15 (zlib)
-// strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED
-mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // MINIZ_HEADER_INCLUDED
-
-/*
-  This is free and unencumbered software released into the public domain.
-
-  Anyone is free to copy, modify, publish, use, compile, sell, or
-  distribute this software, either in source code form or as a compiled
-  binary, for any purpose, commercial or non-commercial, and by any
-  means.
-
-  In jurisdictions that recognize copyright laws, the author or authors
-  of this software dedicate any and all copyright interest in the
-  software to the public domain. We make this dedication for the benefit
-  of the public at large and to the detriment of our heirs and
-  successors. We intend this dedication to be an overt act of
-  relinquishment in perpetuity of all present and future rights to this
-  software under copyright law.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
-  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-  OTHER DEALINGS IN THE SOFTWARE.
-
-  For more information, please refer to <http://unlicense.org/>
-*/

3rdparty/meshoptimizer/demo/pirate.obj

@@ -1,11358 +0,0 @@
-# Blender v2.79 (sub 0) OBJ File: 'pirate.blend'
-# www.blender.org
-# Pirate by Clint Bellanger
-# https://opengameart.org/content/pirate
-# Distributed under CC-BY-SA 3.0
-mtllib pirate.mtl
-o Pirate_Sphere.001
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-v 0.140596 0.296697 -0.019914
-v 0.236935 0.298150 -0.081582
-v 0.217650 0.297630 -0.136721
-v 0.158346 0.295603 -0.157599
-v 0.110046 0.294732 -0.129811
-v 0.112876 0.294808 -0.076172
-v 0.180417 0.388284 0.013613
-v 0.219940 0.392383 -0.019552
-v 0.129895 0.386004 -0.002073
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-usemtl Cornea
-s 1
-f 268/1/1 269/2/2 270/3/3 267/4/4
-f 267/4/4 270/3/3 271/5/5 266/6/6
-f 266/6/6 271/5/5 272/7/7 265/8/8
-f 271/5/5 274/9/9 273/10/10 272/7/7
-f 270/3/3 275/11/11 274/9/9 271/5/5
-f 269/2/2 276/12/12 275/11/11 270/3/3
-f 276/12/12 277/13/13 278/14/14 275/11/11
-f 275/11/11 278/14/14 279/15/15 274/9/9
-f 274/9/9 279/15/15 280/16/16 273/10/10
-f 279/15/15 282/17/17 281/18/18 280/16/16
-f 278/14/14 283/19/19 282/17/17 279/15/15
-f 277/13/13 284/20/20 283/19/19 278/14/14
-f 284/20/20 285/21/21 286/22/22 283/19/19
-f 283/19/19 286/22/22 287/23/23 282/17/17
-f 282/17/17 287/23/23 288/24/24 281/18/18
-f 287/23/23 290/25/25 289/26/26 288/24/24
-f 286/22/22 291/27/27 290/25/25 287/23/23
-f 285/21/21 292/28/28 291/27/27 286/22/22
-f 292/28/28 293/29/29 294/30/30 291/27/27
-f 291/27/27 294/30/30 295/31/31 290/25/25
-f 290/25/25 295/31/31 296/32/32 289/26/26
-f 295/31/31 266/6/6 265/8/8 296/32/32
-f 294/30/30 267/4/4 266/6/6 295/31/31
-f 293/29/29 268/1/1 267/4/4 294/30/30
-f 300/33/7 326/34/8 327/35/6 299/36/5
-f 299/36/5 327/35/6 328/37/4 298/38/3
-f 298/38/3 328/37/4 329/39/1 297/40/2
-f 303/41/11 298/38/3 297/40/2 304/42/12
-f 302/43/33 299/36/5 298/38/3 303/41/11
-f 301/44/10 300/33/7 299/36/5 302/43/33
-f 308/45/16 301/44/10 302/43/33 307/46/15
-f 307/46/15 302/43/33 303/41/11 306/47/14
-f 306/47/14 303/41/11 304/42/12 305/48/13
-f 312/49/19 306/47/14 305/48/13 313/50/20
-f 311/51/17 307/46/15 306/47/14 312/49/19
-f 310/52/18 308/45/16 307/46/15 311/51/17
-f 317/53/24 310/52/18 311/51/17 316/54/23
-f 316/54/23 311/51/17 312/49/19 315/55/22
-f 315/55/22 312/49/19 313/50/20 314/56/21
-f 320/57/27 315/55/22 314/56/21 321/58/28
-f 319/59/25 316/54/23 315/55/22 320/57/27
-f 318/60/26 317/53/24 316/54/23 319/59/25
-f 325/61/32 318/60/26 319/59/25 324/62/31
-f 324/62/31 319/59/25 320/57/27 323/63/30
-f 323/63/30 320/57/27 321/58/28 322/64/29
-f 328/37/4 323/63/30 322/64/29 329/39/1
-f 327/35/6 324/62/31 323/63/30 328/37/4
-f 326/34/8 325/61/32 324/62/31 327/35/6
-usemtl Iris
-f 272/7/7 264/65/34 265/8/8
-f 273/10/10 264/65/34 272/7/7
-f 280/16/16 264/65/34 273/10/10
-f 281/18/18 264/65/34 280/16/16
-f 288/24/24 264/65/34 281/18/18
-f 289/26/26 264/65/34 288/24/24
-f 296/32/32 264/65/34 289/26/26
-f 265/8/8 264/65/34 296/32/32
-f 309/66/34 326/34/8 300/33/7
-f 309/66/34 300/33/7 301/44/10
-f 309/66/34 301/44/10 308/45/16
-f 309/66/34 308/45/16 310/52/18
-f 309/66/34 310/52/18 317/53/24
-f 309/66/34 317/53/24 318/60/26
-f 309/66/34 318/60/26 325/61/32
-f 309/66/34 325/61/32 326/34/8
-usemtl Leather
-f 17/67/35 22/68/36 24/69/37 20/70/38
-f 22/68/36 18/71/39 21/72/40 24/69/37
-f 23/73/41 16/74/42 25/75/43 26/76/44
-f 19/77/45 23/73/41 26/76/44 27/78/46
-f 16/74/42 28/79/47 30/80/48 25/75/43
-f 28/79/47 32/81/49 31/82/50 30/80/48
-f 31/82/50 32/81/49 34/83/51 33/84/52
-f 33/85/52 34/86/51 36/87/53 35/88/54
-f 35/88/54 36/87/53 38/89/55 37/90/56
-f 19/77/45 27/78/46 37/90/56 38/89/55
-f 17/67/35 20/70/38 40/91/57 29/92/58
-f 18/71/39 39/93/59 41/94/60 21/72/40
-f 21/72/40 41/94/60 42/95/61 24/69/37
-f 20/70/38 24/69/37 42/95/61 40/91/57
-f 32/81/49 28/79/47 2661/96/62 2662/97/63
-f 34/83/51 32/81/49 2662/97/63 2663/98/64
-f 36/87/53 34/86/51 2663/99/64 2664/100/65
-f 38/89/55 36/87/53 2664/100/65 2665/101/66
-f 29/92/58 40/91/57 2667/102/67 2666/103/68
-f 41/94/60 39/93/59 2668/104/69 2669/105/70
-f 42/95/61 41/94/60 2669/105/70 2670/106/71
-f 40/91/57 42/95/61 2670/106/71 2667/102/67
-f 45/107/72 43/108/73 2671/109/74 2672/110/75
-f 46/111/76 45/107/72 2672/110/75 2673/112/76
-f 47/113/77 46/114/76 2673/115/76 2674/116/78
-f 48/117/79 47/113/77 2674/116/78 2675/118/80
-f 44/119/81 50/120/76 2677/121/76 2676/122/82
-f 51/123/76 49/124/83 2678/125/84 2679/126/76
-f 52/127/76 51/123/76 2679/126/76 2680/128/76
-f 50/120/76 52/129/76 2680/130/76 2677/121/76
-f 55/131/85 53/132/86 2681/133/87 2684/134/88
-f 56/135/89 55/131/85 2684/134/88 2685/136/89
-f 57/137/90 56/138/89 2685/139/89 2686/140/91
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-f 65/154/103 2682/155/104 2695/156/104 2697/157/105
-f 66/158/89 65/154/103 2697/157/105 2698/159/89
-f 67/160/106 66/161/89 2698/159/89 2699/162/107
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-f 2696/165/109 2701/166/109 76/167/110 74/168/111
-f 74/168/111 76/167/110 75/169/112
-f 2683/170/113 2689/171/113 77/172/113 73/173/113
-f 63/174/114 70/175/115 71/176/116 69/177/117
-f 70/175/115 72/178/112 71/176/116
-f 78/179/118 16/74/42 23/73/41 80/180/119
-f 80/180/119 22/68/36 17/67/35 78/179/118
-f 19/77/45 79/181/120 80/180/119 23/73/41
-f 79/181/120 18/71/39 22/68/36 80/180/119
-f 16/74/42 78/179/118 81/182/121 28/79/47
-f 78/179/118 17/67/35 29/92/58 81/182/121
-f 18/71/39 79/181/120 82/183/122 39/93/59
-f 79/181/120 19/77/45 38/89/55 82/183/122
-f 28/79/47 81/182/121 2702/184/123 2661/96/62
-f 81/182/121 29/92/58 2666/103/68 2702/184/123
-f 39/93/59 82/183/122 2703/185/124 2668/104/69
-f 82/183/122 38/89/55 2665/101/66 2703/185/124
-f 43/108/73 83/186/125 2704/187/126 2671/109/74
-f 83/186/125 44/119/81 2676/122/82 2704/187/126
-f 49/124/83 84/188/127 2705/189/128 2678/125/84
-f 84/188/127 48/117/79 2675/118/80 2705/189/128
-f 53/132/86 85/190/129 2706/191/130 2681/133/87
-f 85/190/129 54/143/94 2690/146/97 2706/191/130
-f 59/148/99 86/192/131 2707/193/132 2692/149/100
-f 86/192/131 58/141/92 2687/142/93 2707/193/132
-f 69/177/117 88/194/133 87/195/134 63/174/114
-f 88/194/133 68/196/135 64/197/135 87/195/134
-f 26/76/44 25/75/43 89/198/136 90/199/137
-f 27/78/46 26/76/44 90/199/137 91/200/138
-f 25/75/43 30/80/48 92/201/139 89/198/136
-f 30/80/48 31/82/50 93/202/140 92/201/139
-f 31/82/50 33/84/52 94/203/141 93/202/140
-f 33/85/52 35/88/54 95/204/142 94/205/141
-f 35/88/54 37/90/56 96/206/143 95/204/142
-f 37/90/56 27/78/46 91/200/138 96/206/143
-f 90/199/137 89/198/136 98/207/144 97/208/145
-f 91/200/138 90/199/137 97/208/145 99/209/146
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-f 93/202/140 94/203/141 102/212/149 101/211/148
-f 94/205/141 95/204/142 103/213/150 102/214/149
-f 95/204/142 96/206/143 104/215/151 103/213/150
-f 96/206/143 91/200/138 99/209/146 104/215/151
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-f 101/211/148 102/212/149 110/221/157 109/220/156
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-usemtl BlackCloth
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3rdparty/meshoptimizer/demo/tests.cpp

@@ -1,483 +0,0 @@
-#include "../src/meshoptimizer.h"
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <vector>
-
-// This file uses assert() to verify algorithm correctness
-#undef NDEBUG
-#include <assert.h>
-
-struct PV
-{
-	unsigned short px, py, pz;
-	unsigned char nu, nv; // octahedron encoded normal, aliases .pw
-	unsigned short tx, ty;
-};
-
-// note: 4 6 5 triangle here is a combo-breaker:
-// we encode it without rotating, a=next, c=next - this means we do *not* bump next to 6
-// which means that the next triangle can't be encoded via next sequencing!
-static const unsigned int kIndexBuffer[] = {0, 1, 2, 2, 1, 3, 4, 6, 5, 7, 8, 9};
-
-static const unsigned char kIndexDataV0[] = {
-    0xe0, 0xf0, 0x10, 0xfe, 0xff, 0xf0, 0x0c, 0xff, 0x02, 0x02, 0x02, 0x00, 0x76, 0x87, 0x56, 0x67,
-    0x78, 0xa9, 0x86, 0x65, 0x89, 0x68, 0x98, 0x01, 0x69, 0x00, 0x00, // clang-format :-/
-};
-
-static const PV kVertexBuffer[] = {
-    {0, 0, 0, 0, 0, 0, 0},
-    {300, 0, 0, 0, 0, 500, 0},
-    {0, 300, 0, 0, 0, 0, 500},
-    {300, 300, 0, 0, 0, 500, 500},
-};
-
-static const unsigned char kVertexDataV0[] = {
-    0xa0, 0x01, 0x3f, 0x00, 0x00, 0x00, 0x58, 0x57, 0x58, 0x01, 0x26, 0x00, 0x00, 0x00, 0x01,
-    0x0c, 0x00, 0x00, 0x00, 0x58, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
-    0x3f, 0x00, 0x00, 0x00, 0x17, 0x18, 0x17, 0x01, 0x26, 0x00, 0x00, 0x00, 0x01, 0x0c, 0x00,
-    0x00, 0x00, 0x17, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // clang-format :-/
-};
-
-static void decodeIndexV0()
-{
-	const size_t index_count = sizeof(kIndexBuffer) / sizeof(kIndexBuffer[0]);
-
-	std::vector<unsigned char> buffer(kIndexDataV0, kIndexDataV0 + sizeof(kIndexDataV0));
-
-	unsigned int decoded[index_count];
-	assert(meshopt_decodeIndexBuffer(decoded, index_count, &buffer[0], buffer.size()) == 0);
-	assert(memcmp(decoded, kIndexBuffer, sizeof(kIndexBuffer)) == 0);
-}
-
-static void decodeIndex16()
-{
-	const size_t index_count = sizeof(kIndexBuffer) / sizeof(kIndexBuffer[0]);
-	const size_t vertex_count = 10;
-
-	std::vector<unsigned char> buffer(meshopt_encodeIndexBufferBound(index_count, vertex_count));
-	buffer.resize(meshopt_encodeIndexBuffer(&buffer[0], buffer.size(), kIndexBuffer, index_count));
-
-	unsigned short decoded[index_count];
-	assert(meshopt_decodeIndexBuffer(decoded, index_count, &buffer[0], buffer.size()) == 0);
-
-	for (size_t i = 0; i < index_count; ++i)
-		assert(decoded[i] == kIndexBuffer[i]);
-}
-
-static void encodeIndexMemorySafe()
-{
-	const size_t index_count = sizeof(kIndexBuffer) / sizeof(kIndexBuffer[0]);
-	const size_t vertex_count = 10;
-
-	std::vector<unsigned char> buffer(meshopt_encodeIndexBufferBound(index_count, vertex_count));
-	buffer.resize(meshopt_encodeIndexBuffer(&buffer[0], buffer.size(), kIndexBuffer, index_count));
-
-	// check that encode is memory-safe; note that we reallocate the buffer for each try to make sure ASAN can verify buffer access
-	for (size_t i = 0; i <= buffer.size(); ++i)
-	{
-		std::vector<unsigned char> shortbuffer(i);
-		size_t result = meshopt_encodeIndexBuffer(i == 0 ? 0 : &shortbuffer[0], i, kIndexBuffer, index_count);
-
-		if (i == buffer.size())
-			assert(result == buffer.size());
-		else
-			assert(result == 0);
-	}
-}
-
-static void decodeIndexMemorySafe()
-{
-	const size_t index_count = sizeof(kIndexBuffer) / sizeof(kIndexBuffer[0]);
-	const size_t vertex_count = 10;
-
-	std::vector<unsigned char> buffer(meshopt_encodeIndexBufferBound(index_count, vertex_count));
-	buffer.resize(meshopt_encodeIndexBuffer(&buffer[0], buffer.size(), kIndexBuffer, index_count));
-
-	// check that decode is memory-safe; note that we reallocate the buffer for each try to make sure ASAN can verify buffer access
-	unsigned int decoded[index_count];
-
-	for (size_t i = 0; i <= buffer.size(); ++i)
-	{
-		std::vector<unsigned char> shortbuffer(buffer.begin(), buffer.begin() + i);
-		int result = meshopt_decodeIndexBuffer(decoded, index_count, i == 0 ? 0 : &shortbuffer[0], i);
-
-		if (i == buffer.size())
-			assert(result == 0);
-		else
-			assert(result < 0);
-	}
-}
-
-static void decodeIndexRejectExtraBytes()
-{
-	const size_t index_count = sizeof(kIndexBuffer) / sizeof(kIndexBuffer[0]);
-	const size_t vertex_count = 10;
-
-	std::vector<unsigned char> buffer(meshopt_encodeIndexBufferBound(index_count, vertex_count));
-	buffer.resize(meshopt_encodeIndexBuffer(&buffer[0], buffer.size(), kIndexBuffer, index_count));
-
-	// check that decoder doesn't accept extra bytes after a valid stream
-	std::vector<unsigned char> largebuffer(buffer);
-	largebuffer.push_back(0);
-
-	unsigned int decoded[index_count];
-	assert(meshopt_decodeIndexBuffer(decoded, index_count, &largebuffer[0], largebuffer.size()) < 0);
-}
-
-static void decodeIndexRejectMalformedHeaders()
-{
-	const size_t index_count = sizeof(kIndexBuffer) / sizeof(kIndexBuffer[0]);
-	const size_t vertex_count = 10;
-
-	std::vector<unsigned char> buffer(meshopt_encodeIndexBufferBound(index_count, vertex_count));
-	buffer.resize(meshopt_encodeIndexBuffer(&buffer[0], buffer.size(), kIndexBuffer, index_count));
-
-	// check that decoder doesn't accept malformed headers
-	std::vector<unsigned char> brokenbuffer(buffer);
-	brokenbuffer[0] = 0;
-
-	unsigned int decoded[index_count];
-	assert(meshopt_decodeIndexBuffer(decoded, index_count, &brokenbuffer[0], brokenbuffer.size()) < 0);
-}
-
-static void decodeVertexV0()
-{
-	const size_t vertex_count = sizeof(kVertexBuffer) / sizeof(kVertexBuffer[0]);
-
-	std::vector<unsigned char> buffer(kVertexDataV0, kVertexDataV0 + sizeof(kVertexDataV0));
-
-	PV decoded[vertex_count];
-	assert(meshopt_decodeVertexBuffer(decoded, vertex_count, sizeof(PV), &buffer[0], buffer.size()) == 0);
-	assert(memcmp(decoded, kVertexBuffer, sizeof(kVertexBuffer)) == 0);
-}
-
-static void encodeVertexMemorySafe()
-{
-	const size_t vertex_count = sizeof(kVertexBuffer) / sizeof(kVertexBuffer[0]);
-
-	std::vector<unsigned char> buffer(meshopt_encodeVertexBufferBound(vertex_count, sizeof(PV)));
-	buffer.resize(meshopt_encodeVertexBuffer(&buffer[0], buffer.size(), kVertexBuffer, vertex_count, sizeof(PV)));
-
-	// check that encode is memory-safe; note that we reallocate the buffer for each try to make sure ASAN can verify buffer access
-	for (size_t i = 0; i <= buffer.size(); ++i)
-	{
-		std::vector<unsigned char> shortbuffer(i);
-		size_t result = meshopt_encodeVertexBuffer(i == 0 ? 0 : &shortbuffer[0], i, kVertexBuffer, vertex_count, sizeof(PV));
-
-		if (i == buffer.size())
-			assert(result == buffer.size());
-		else
-			assert(result == 0);
-	}
-}
-
-static void decodeVertexMemorySafe()
-{
-	const size_t vertex_count = sizeof(kVertexBuffer) / sizeof(kVertexBuffer[0]);
-
-	std::vector<unsigned char> buffer(meshopt_encodeVertexBufferBound(vertex_count, sizeof(PV)));
-	buffer.resize(meshopt_encodeVertexBuffer(&buffer[0], buffer.size(), kVertexBuffer, vertex_count, sizeof(PV)));
-
-	// check that decode is memory-safe; note that we reallocate the buffer for each try to make sure ASAN can verify buffer access
-	PV decoded[vertex_count];
-
-	for (size_t i = 0; i <= buffer.size(); ++i)
-	{
-		std::vector<unsigned char> shortbuffer(buffer.begin(), buffer.begin() + i);
-		int result = meshopt_decodeVertexBuffer(decoded, vertex_count, sizeof(PV), i == 0 ? 0 : &shortbuffer[0], i);
-		(void)result;
-
-		if (i == buffer.size())
-			assert(result == 0);
-		else
-			assert(result < 0);
-	}
-}
-
-static void decodeVertexRejectExtraBytes()
-{
-	const size_t vertex_count = sizeof(kVertexBuffer) / sizeof(kVertexBuffer[0]);
-
-	std::vector<unsigned char> buffer(meshopt_encodeVertexBufferBound(vertex_count, sizeof(PV)));
-	buffer.resize(meshopt_encodeVertexBuffer(&buffer[0], buffer.size(), kVertexBuffer, vertex_count, sizeof(PV)));
-
-	// check that decoder doesn't accept extra bytes after a valid stream
-	std::vector<unsigned char> largebuffer(buffer);
-	largebuffer.push_back(0);
-
-	PV decoded[vertex_count];
-	assert(meshopt_decodeVertexBuffer(decoded, vertex_count, sizeof(PV), &largebuffer[0], largebuffer.size()) < 0);
-}
-
-static void decodeVertexRejectMalformedHeaders()
-{
-	const size_t vertex_count = sizeof(kVertexBuffer) / sizeof(kVertexBuffer[0]);
-
-	std::vector<unsigned char> buffer(meshopt_encodeVertexBufferBound(vertex_count, sizeof(PV)));
-	buffer.resize(meshopt_encodeVertexBuffer(&buffer[0], buffer.size(), kVertexBuffer, vertex_count, sizeof(PV)));
-
-	// check that decoder doesn't accept malformed headers
-	std::vector<unsigned char> brokenbuffer(buffer);
-	brokenbuffer[0] = 0;
-
-	PV decoded[vertex_count];
-	assert(meshopt_decodeVertexBuffer(decoded, vertex_count, sizeof(PV), &brokenbuffer[0], brokenbuffer.size()) < 0);
-}
-
-static void decodeVertexBitGroups()
-{
-	unsigned char data[16 * 4];
-
-	// this tests 0/2/4/8 bit groups in one stream
-	for (size_t i = 0; i < 16; ++i)
-	{
-		data[i * 4 + 0] = 0;
-		data[i * 4 + 1] = (unsigned char)(i * 1);
-		data[i * 4 + 2] = (unsigned char)(i * 2);
-		data[i * 4 + 3] = (unsigned char)(i * 8);
-	}
-
-	std::vector<unsigned char> buffer(meshopt_encodeVertexBufferBound(16, 4));
-	buffer.resize(meshopt_encodeVertexBuffer(&buffer[0], buffer.size(), data, 16, 4));
-
-	unsigned char decoded[16 * 4];
-	assert(meshopt_decodeVertexBuffer(decoded, 16, 4, &buffer[0], buffer.size()) == 0);
-	assert(memcmp(decoded, data, sizeof(data)) == 0);
-}
-
-static void decodeVertexBitGroupSentinels()
-{
-	unsigned char data[16 * 4];
-
-	// this tests 0/2/4/8 bit groups and sentinels in one stream
-	for (size_t i = 0; i < 16; ++i)
-	{
-		if (i == 7 || i == 13)
-		{
-			data[i * 4 + 0] = 42;
-			data[i * 4 + 1] = 42;
-			data[i * 4 + 2] = 42;
-			data[i * 4 + 3] = 42;
-		}
-		else
-		{
-			data[i * 4 + 0] = 0;
-			data[i * 4 + 1] = (unsigned char)(i * 1);
-			data[i * 4 + 2] = (unsigned char)(i * 2);
-			data[i * 4 + 3] = (unsigned char)(i * 8);
-		}
-	}
-
-	std::vector<unsigned char> buffer(meshopt_encodeVertexBufferBound(16, 4));
-	buffer.resize(meshopt_encodeVertexBuffer(&buffer[0], buffer.size(), data, 16, 4));
-
-	unsigned char decoded[16 * 4];
-	assert(meshopt_decodeVertexBuffer(decoded, 16, 4, &buffer[0], buffer.size()) == 0);
-	assert(memcmp(decoded, data, sizeof(data)) == 0);
-}
-
-static void decodeVertexLarge()
-{
-	unsigned char data[128 * 4];
-
-	// this tests 0/2/4/8 bit groups in one stream
-	for (size_t i = 0; i < 128; ++i)
-	{
-		data[i * 4 + 0] = 0;
-		data[i * 4 + 1] = (unsigned char)(i * 1);
-		data[i * 4 + 2] = (unsigned char)(i * 2);
-		data[i * 4 + 3] = (unsigned char)(i * 8);
-	}
-
-	std::vector<unsigned char> buffer(meshopt_encodeVertexBufferBound(128, 4));
-	buffer.resize(meshopt_encodeVertexBuffer(&buffer[0], buffer.size(), data, 128, 4));
-
-	unsigned char decoded[128 * 4];
-	assert(meshopt_decodeVertexBuffer(decoded, 128, 4, &buffer[0], buffer.size()) == 0);
-	assert(memcmp(decoded, data, sizeof(data)) == 0);
-}
-
-static void clusterBoundsDegenerate()
-{
-	const float vbd[] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
-	const unsigned int ibd[] = {0, 0, 0};
-	const unsigned int ib1[] = {0, 1, 2};
-
-	// all of the bounds below are degenerate as they use 0 triangles, one topology-degenerate triangle and one position-degenerate triangle respectively
-	meshopt_Bounds bounds0 = meshopt_computeClusterBounds(0, 0, 0, 0, 12);
-	meshopt_Bounds boundsd = meshopt_computeClusterBounds(ibd, 3, vbd, 3, 12);
-	meshopt_Bounds bounds1 = meshopt_computeClusterBounds(ib1, 3, vbd, 3, 12);
-
-	assert(bounds0.center[0] == 0 && bounds0.center[1] == 0 && bounds0.center[2] == 0 && bounds0.radius == 0);
-	assert(boundsd.center[0] == 0 && boundsd.center[1] == 0 && boundsd.center[2] == 0 && boundsd.radius == 0);
-	assert(bounds1.center[0] == 0 && bounds1.center[1] == 0 && bounds1.center[2] == 0 && bounds1.radius == 0);
-
-	const float vb1[] = {1, 0, 0, 0, 1, 0, 0, 0, 1};
-	const unsigned int ib2[] = {0, 1, 2, 0, 2, 1};
-
-	// these bounds have a degenerate cone since the cluster has two triangles with opposite normals
-	meshopt_Bounds bounds2 = meshopt_computeClusterBounds(ib2, 6, vb1, 3, 12);
-
-	assert(bounds2.cone_apex[0] == 0 && bounds2.cone_apex[1] == 0 && bounds2.cone_apex[2] == 0);
-	assert(bounds2.cone_axis[0] == 0 && bounds2.cone_axis[1] == 0 && bounds2.cone_axis[2] == 0);
-	assert(bounds2.cone_cutoff == 1);
-	assert(bounds2.cone_axis_s8[0] == 0 && bounds2.cone_axis_s8[1] == 0 && bounds2.cone_axis_s8[2] == 0);
-	assert(bounds2.cone_cutoff_s8 == 127);
-
-	// however, the bounding sphere needs to be in tact (here we only check bbox for simplicity)
-	assert(bounds2.center[0] - bounds2.radius <= 0 && bounds2.center[0] + bounds2.radius >= 1);
-	assert(bounds2.center[1] - bounds2.radius <= 0 && bounds2.center[1] + bounds2.radius >= 1);
-	assert(bounds2.center[2] - bounds2.radius <= 0 && bounds2.center[2] + bounds2.radius >= 1);
-}
-
-static size_t allocCount;
-static size_t freeCount;
-
-static void* customAlloc(size_t size)
-{
-	allocCount++;
-
-	return malloc(size);
-}
-
-static void customFree(void* ptr)
-{
-	freeCount++;
-
-	free(ptr);
-}
-
-static void customAllocator()
-{
-	meshopt_setAllocator(customAlloc, customFree);
-
-	assert(allocCount == 0 && freeCount == 0);
-
-	float vb[] = {1, 0, 0, 0, 1, 0, 0, 0, 1};
-	unsigned int ib[] = {0, 1, 2};
-	unsigned short ibs[] = {0, 1, 2};
-
-	// meshopt_computeClusterBounds doesn't allocate
-	meshopt_computeClusterBounds(ib, 3, vb, 3, 12);
-	assert(allocCount == 0 && freeCount == 0);
-
-	// ... unless IndexAdapter is used
-	meshopt_computeClusterBounds(ibs, 3, vb, 3, 12);
-	assert(allocCount == 1 && freeCount == 1);
-
-	// meshopt_optimizeVertexFetch allocates internal remap table and temporary storage for in-place remaps
-	meshopt_optimizeVertexFetch(vb, ib, 3, vb, 3, 12);
-	assert(allocCount == 3 && freeCount == 3);
-
-	// ... plus one for IndexAdapter
-	meshopt_optimizeVertexFetch(vb, ibs, 3, vb, 3, 12);
-	assert(allocCount == 6 && freeCount == 6);
-
-	meshopt_setAllocator(operator new, operator delete);
-
-	// customAlloc & customFree should not get called anymore
-	meshopt_optimizeVertexFetch(vb, ib, 3, vb, 3, 12);
-	assert(allocCount == 6 && freeCount == 6);
-
-	allocCount = freeCount = 0;
-}
-
-static void emptyMesh()
-{
-	meshopt_optimizeVertexCache(0, 0, 0, 0);
-	meshopt_optimizeVertexCacheFifo(0, 0, 0, 0, 16);
-	meshopt_optimizeOverdraw(0, 0, 0, 0, 0, 12, 1.f);
-}
-
-static void simplifyStuck()
-{
-	// tetrahedron can't be simplified due to collapse error restrictions
-	float vb1[] = {0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1};
-	unsigned int ib1[] = {0, 1, 2, 0, 2, 3, 0, 3, 1, 2, 1, 3};
-
-	assert(meshopt_simplify(ib1, ib1, 12, vb1, 4, 12, 6, 1e-3f) == 12);
-
-	// 5-vertex strip can't be simplified due to topology restriction since middle triangle has flipped winding
-	float vb2[] = {0, 0, 0, 1, 0, 0, 2, 0, 0, 0.5f, 1, 0, 1.5f, 1, 0};
-	unsigned int ib2[] = {0, 1, 3, 3, 1, 4, 1, 2, 4}; // ok
-	unsigned int ib3[] = {0, 1, 3, 1, 3, 4, 1, 2, 4}; // flipped
-
-	assert(meshopt_simplify(ib2, ib2, 9, vb2, 5, 12, 6, 1e-3f) == 6);
-	assert(meshopt_simplify(ib3, ib3, 9, vb2, 5, 12, 6, 1e-3f) == 9);
-}
-
-static void simplifySloppyStuck()
-{
-	const float vb[] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
-	const unsigned int ib[] = {0, 1, 2, 0, 1, 2};
-
-	// simplifying down to 0 triangles results in 0 immediately
-	assert(meshopt_simplifySloppy(0, ib, 3, vb, 3, 12, 0) == 0);
-
-	// simplifying down to 2 triangles given that all triangles are degenerate results in 0 as well
-	assert(meshopt_simplifySloppy(0, ib, 6, vb, 3, 12, 6) == 0);
-}
-
-static void simplifyPointsStuck()
-{
-	const float vb[] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
-
-	// simplifying down to 0 points results in 0 immediately
-	assert(meshopt_simplifyPoints(0, vb, 3, 12, 0) == 0);
-}
-
-static void runTestsOnce()
-{
-	decodeIndexV0();
-	decodeIndex16();
-	encodeIndexMemorySafe();
-	decodeIndexMemorySafe();
-	decodeIndexRejectExtraBytes();
-	decodeIndexRejectMalformedHeaders();
-
-	decodeVertexV0();
-	encodeVertexMemorySafe();
-	decodeVertexMemorySafe();
-	decodeVertexRejectExtraBytes();
-	decodeVertexRejectMalformedHeaders();
-	decodeVertexBitGroups();
-	decodeVertexBitGroupSentinels();
-	decodeVertexLarge();
-
-	clusterBoundsDegenerate();
-
-	customAllocator();
-
-	emptyMesh();
-
-	simplifyStuck();
-	simplifySloppyStuck();
-	simplifyPointsStuck();
-}
-
-namespace meshopt
-{
-extern unsigned int cpuid;
-}
-
-void runTests()
-{
-	runTestsOnce();
-
-#if !(defined(__AVX__) || defined(__SSSE3__)) && (defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__x86_64__))
-	// When SSSE3/AVX support isn't enabled unconditionally, we use a cpuid-based fallback
-	// It's useful to be able to test scalar code in this case, so we temporarily fake the feature bits
-	// and restore them later
-	unsigned int cpuid = meshopt::cpuid;
-	meshopt::cpuid = 0;
-
-	runTestsOnce();
-
-	meshopt::cpuid = cpuid;
-#endif
-}

3rdparty/meshoptimizer/src/indexcodec.cpp

@@ -20,6 +20,8 @@ namespace meshopt
 
 const unsigned char kIndexHeader = 0xe0;
 
+static int gEncodeIndexVersion = 0;
+
 typedef unsigned int VertexFifo[16];
 typedef unsigned int EdgeFifo[16][2];
 
@@ -217,7 +219,9 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
 	if (buffer_size < 1 + index_count / 3 + 16)
 		return 0;
 
-	buffer[0] = kIndexHeader;
+	int version = gEncodeIndexVersion;
+
+	buffer[0] = (unsigned char)(kIndexHeader | version);
 
 	EdgeFifo edgefifo;
 	memset(edgefifo, -1, sizeof(edgefifo));
@@ -235,6 +239,8 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
 	unsigned char* data = code + index_count / 3;
 	unsigned char* data_safe_end = buffer + buffer_size - 16;
 
+	int fecmax = version >= 1 ? 14 : 15;
+
 	// use static encoding table; it's possible to pack the result and then build an optimal table and repack
 	// for now we keep it simple and use the table that has been generated based on symbol frequency on a training mesh set
 	const unsigned char* codeaux_table = kCodeAuxEncodingTable;
@@ -259,7 +265,7 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
 			int fe = fer >> 2;
 			int fc = getVertexFifo(vertexfifo, c, vertexfifooffset);
 
-			int fec = (fc >= 1 && fc < 15) ? fc : (c == next) ? (next++, 0) : 15;
+			int fec = (fc >= 1 && fc < fecmax) ? fc : (c == next) ? (next++, 0) : (c + 1 == last && version >= 1) ? (--last, 14) : 15;
 
 			*code++ = (unsigned char)((fe << 4) | fec);
 
@@ -272,7 +278,7 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
 				encodeIndex(data, c, next, last), last = c;
 
 			// we only need to push third vertex since first two are likely already in the vertex fifo
-			if (fec == 0 || fec == 15)
+			if (fec == 0 || fec == 15 || (fec == 14 && version >= 1))
 				pushVertexFifo(vertexfifo, c, vertexfifooffset);
 
 			// we only need to push two new edges to edge fifo since the third one is already there
@@ -286,6 +292,19 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
 
 			unsigned int a = indices[i + order[0]], b = indices[i + order[1]], c = indices[i + order[2]];
 
+			// if a/b/c are 0/1/2, we emit a reset code
+			bool reset = false;
+
+			if (a == 0 && b == 1 && c == 2 && next > 0 && version >= 1)
+			{
+				reset = true;
+				next = 0;
+
+				// reset vertex fifo to make sure we don't accidentally reference vertices from that in the future
+				// this makes sure next continues to get incremented instead of being stuck
+				memset(vertexfifo, -1, sizeof(vertexfifo));
+			}
+
 			int fb = getVertexFifo(vertexfifo, b, vertexfifooffset);
 			int fc = getVertexFifo(vertexfifo, c, vertexfifooffset);
 
@@ -299,7 +318,7 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
 			int codeauxindex = getCodeAuxIndex(codeaux, codeaux_table);
 
 			// <14 encodes an index into codeaux table, 14 encodes fea=0, 15 encodes fea=15
-			if (fea == 0 && codeauxindex >= 0 && codeauxindex < 14)
+			if (fea == 0 && codeauxindex >= 0 && codeauxindex < 14 && !reset)
 			{
 				*code++ = (unsigned char)((15 << 4) | codeauxindex);
 			}
@@ -356,6 +375,9 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
 		*data++ = codeaux_table[i];
 	}
 
+	// since we encode restarts as codeaux without a table reference, we need to make sure 00 is encoded as a table reference
+	assert(codeaux_table[0] == 0);
+
 	assert(data >= buffer + index_count / 3 + 16);
 	assert(data <= buffer + buffer_size);
 
@@ -402,6 +424,13 @@ size_t meshopt_encodeIndexBufferBound(size_t index_count, size_t vertex_count)
 	return 1 + (index_count / 3) * (2 + 3 * vertex_groups) + 16;
 }
 
+void meshopt_encodeIndexVersion(int version)
+{
+	assert(unsigned(version) <= 1);
+
+	meshopt::gEncodeIndexVersion = version;
+}
+
 int meshopt_decodeIndexBuffer(void* destination, size_t index_count, size_t index_size, const unsigned char* buffer, size_t buffer_size)
 {
 	using namespace meshopt;
@@ -413,7 +442,11 @@ int meshopt_decodeIndexBuffer(void* destination, size_t index_count, size_t inde
 	if (buffer_size < 1 + index_count / 3 + 16)
 		return -2;
 
-	if (buffer[0] != kIndexHeader)
+	if ((buffer[0] & 0xf0) != kIndexHeader)
+		return -1;
+
+	int version = buffer[0] & 0x0f;
+	if (version > 1)
 		return -1;
 
 	EdgeFifo edgefifo;
@@ -428,6 +461,8 @@ int meshopt_decodeIndexBuffer(void* destination, size_t index_count, size_t inde
 	unsigned int next = 0;
 	unsigned int last = 0;
 
+	int fecmax = version >= 1 ? 14 : 15;
+
 	// since we store 16-byte codeaux table at the end, triangle data has to begin before data_safe_end
 	const unsigned char* code = buffer + 1;
 	const unsigned char* data = code + index_count / 3;
@@ -457,7 +492,7 @@ int meshopt_decodeIndexBuffer(void* destination, size_t index_count, size_t inde
 
 			// note: this is the most common path in the entire decoder
 			// inside this if we try to stay branchless (by using cmov/etc.) since these aren't predictable
-			if (fec != 15)
+			if (fec < fecmax)
 			{
 				// fifo reads are wrapped around 16 entry buffer
 				unsigned int cf = vertexfifo[(vertexfifooffset - 1 - fec) & 15];
@@ -480,7 +515,7 @@ int meshopt_decodeIndexBuffer(void* destination, size_t index_count, size_t inde
 				unsigned int c = 0;
 
 				// note that we need to update the last index since free indices are delta-encoded
-				last = c = decodeIndex(data, next, last);
+				last = c = (fec == 14) ? last - 1 : decodeIndex(data, next, last);
 
 				// output triangle
 				writeTriangle(destination, i, index_size, a, b, c);
@@ -540,6 +575,10 @@ int meshopt_decodeIndexBuffer(void* destination, size_t index_count, size_t inde
 				int feb = codeaux >> 4;
 				int fec = codeaux & 15;
 
+				// reset: codeaux is 0 but encoded as not-a-table
+				if (codeaux == 0)
+					next = 0;
+
 				// fifo reads are wrapped around 16 entry buffer
 				// also note that we increment next for all three vertices before decoding indices - this matches encoder behavior
 				unsigned int a = (fea == 0) ? next++ : 0;

3rdparty/meshoptimizer/src/meshoptimizer.h

@@ -102,6 +102,15 @@ MESHOPTIMIZER_API void meshopt_generateShadowIndexBufferMulti(unsigned int* dest
  */
 MESHOPTIMIZER_API void meshopt_optimizeVertexCache(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count);
 
+/**
+ * Vertex transform cache optimizer for strip-like caches
+ * Produces inferior results to meshopt_optimizeVertexCache from the GPU vertex cache perspective
+ * However, the resulting index order is more optimal if the goal is to reduce the triangle strip length or improve compression efficiency
+ *
+ * destination must contain enough space for the resulting index buffer (index_count elements)
+ */
+MESHOPTIMIZER_API void meshopt_optimizeVertexCacheStrip(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count);
+
 /**
  * Vertex transform cache optimizer for FIFO caches
  * Reorders indices to reduce the number of GPU vertex shader invocations
@@ -157,6 +166,12 @@ MESHOPTIMIZER_API size_t meshopt_optimizeVertexFetchRemap(unsigned int* destinat
 MESHOPTIMIZER_API size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, const unsigned int* indices, size_t index_count);
 MESHOPTIMIZER_API size_t meshopt_encodeIndexBufferBound(size_t index_count, size_t vertex_count);
 
+/**
+ * Experimental: Set index buffer encoder format version
+ * version must specify the data format version to encode; valid values are 0 (decodable by all library versions) and 1 (decodable by 0.14+)
+ */
+MESHOPTIMIZER_EXPERIMENTAL void meshopt_encodeIndexVersion(int version);
+
 /**
  * Index buffer decoder
  * Decodes index data from an array of bytes generated by meshopt_encodeIndexBuffer
@@ -368,7 +383,6 @@ MESHOPTIMIZER_EXPERIMENTAL void meshopt_spatialSortRemap(unsigned int* destinati
  * Reorders triangles for spatial locality, and generates a new index buffer. The resulting index buffer can be used with other functions like optimizeVertexCache.
  *
  * destination must contain enough space for the resulting index buffer (index_count elements)
- * indices must contain index data that is the result of meshopt_optimizeVertexCache (*not* the original mesh indices!)
  * vertex_positions should have float3 position in the first 12 bytes of each vertex - similar to glVertexPointer
  */
 MESHOPTIMIZER_EXPERIMENTAL void meshopt_spatialSortTriangles(unsigned int* destination, const unsigned int* indices, size_t index_count, const float* vertex_positions, size_t vertex_count, size_t vertex_positions_stride);
@@ -439,6 +453,8 @@ inline void meshopt_generateShadowIndexBufferMulti(T* destination, const T* indi
 template <typename T>
 inline void meshopt_optimizeVertexCache(T* destination, const T* indices, size_t index_count, size_t vertex_count);
 template <typename T>
+inline void meshopt_optimizeVertexCacheStrip(T* destination, const T* indices, size_t index_count, size_t vertex_count);
+template <typename T>
 inline void meshopt_optimizeVertexCacheFifo(T* destination, const T* indices, size_t index_count, size_t vertex_count, unsigned int cache_size);
 template <typename T>
 inline void meshopt_optimizeOverdraw(T* destination, const T* indices, size_t index_count, const float* vertex_positions, size_t vertex_count, size_t vertex_positions_stride, float threshold);
@@ -688,6 +704,15 @@ inline void meshopt_optimizeVertexCache(T* destination, const T* indices, size_t
 	meshopt_optimizeVertexCache(out.data, in.data, index_count, vertex_count);
 }
 
+template <typename T>
+inline void meshopt_optimizeVertexCacheStrip(T* destination, const T* indices, size_t index_count, size_t vertex_count)
+{
+	meshopt_IndexAdapter<T> in(0, indices, index_count);
+	meshopt_IndexAdapter<T> out(destination, 0, index_count);
+
+	meshopt_optimizeVertexCacheStrip(out.data, in.data, index_count, vertex_count);
+}
+
 template <typename T>
 inline void meshopt_optimizeVertexCacheFifo(T* destination, const T* indices, size_t index_count, size_t vertex_count, unsigned int cache_size)
 {

3rdparty/meshoptimizer/src/vcacheoptimizer.cpp

@@ -13,13 +13,23 @@ namespace meshopt
 const size_t kCacheSizeMax = 16;
 const size_t kValenceMax = 8;
 
-static const float kVertexScoreTableCache[1 + kCacheSizeMax] = {
-    0.f,
-    0.779f, 0.791f, 0.789f, 0.981f, 0.843f, 0.726f, 0.847f, 0.882f, 0.867f, 0.799f, 0.642f, 0.613f, 0.600f, 0.568f, 0.372f, 0.234f};
+struct VertexScoreTable
+{
+	float cache[1 + kCacheSizeMax];
+	float live[1 + kValenceMax];
+};
 
-static const float kVertexScoreTableLive[1 + kValenceMax] = {
-    0.f,
-    0.995f, 0.713f, 0.450f, 0.404f, 0.059f, 0.005f, 0.147f, 0.006f};
+// Tuned to minimize the ACMR of a GPU that has a cache profile similar to NVidia and AMD
+static const VertexScoreTable kVertexScoreTable = {
+    {0.f, 0.779f, 0.791f, 0.789f, 0.981f, 0.843f, 0.726f, 0.847f, 0.882f, 0.867f, 0.799f, 0.642f, 0.613f, 0.600f, 0.568f, 0.372f, 0.234f},
+    {0.f, 0.995f, 0.713f, 0.450f, 0.404f, 0.059f, 0.005f, 0.147f, 0.006f},
+};
+
+// Tuned to minimize the encoded index buffer size
+static const VertexScoreTable kVertexScoreTableStrip = {
+    {0.f, 1.000f, 1.000f, 1.000f, 0.453f, 0.561f, 0.490f, 0.459f, 0.179f, 0.526f, 0.000f, 0.227f, 0.184f, 0.490f, 0.112f, 0.050f, 0.131f},
+    {0.f, 0.956f, 0.786f, 0.577f, 0.558f, 0.618f, 0.549f, 0.499f, 0.489f},
+};
 
 struct TriangleAdjacency
 {
@@ -131,13 +141,13 @@ static unsigned int getNextVertexNeighbour(const unsigned int* next_candidates_b
 	return best_candidate;
 }
 
-static float vertexScore(int cache_position, unsigned int live_triangles)
+static float vertexScore(const VertexScoreTable* table, int cache_position, unsigned int live_triangles)
 {
 	assert(cache_position >= -1 && cache_position < int(kCacheSizeMax));
 
 	unsigned int live_triangles_clamped = live_triangles < kValenceMax ? live_triangles : kValenceMax;
 
-	return kVertexScoreTableCache[1 + cache_position] + kVertexScoreTableLive[live_triangles_clamped];
+	return table->cache[1 + cache_position] + table->live[live_triangles_clamped];
 }
 
 static unsigned int getNextTriangleDeadEnd(unsigned int& input_cursor, const unsigned char* emitted_flags, size_t face_count)
@@ -156,7 +166,7 @@ static unsigned int getNextTriangleDeadEnd(unsigned int& input_cursor, const uns
 
 } // namespace meshopt
 
-void meshopt_optimizeVertexCache(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count)
+void meshopt_optimizeVertexCacheTable(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count, const meshopt::VertexScoreTable* table)
 {
 	using namespace meshopt;
 
@@ -197,7 +207,7 @@ void meshopt_optimizeVertexCache(unsigned int* destination, const unsigned int*
 	float* vertex_scores = allocator.allocate<float>(vertex_count);
 
 	for (size_t i = 0; i < vertex_count; ++i)
-		vertex_scores[i] = vertexScore(-1, live_triangles[i]);
+		vertex_scores[i] = vertexScore(table, -1, live_triangles[i]);
 
 	// compute triangle scores
 	float* triangle_scores = allocator.allocate<float>(face_count);
@@ -298,7 +308,7 @@ void meshopt_optimizeVertexCache(unsigned int* destination, const unsigned int*
 			int cache_position = i >= cache_size ? -1 : int(i);
 
 			// update vertex score
-			float score = vertexScore(cache_position, live_triangles[index]);
+			float score = vertexScore(table, cache_position, live_triangles[index]);
 			float score_diff = score - vertex_scores[index];
 
 			vertex_scores[index] = score;
@@ -338,6 +348,16 @@ void meshopt_optimizeVertexCache(unsigned int* destination, const unsigned int*
 	assert(output_triangle == face_count);
 }
 
+void meshopt_optimizeVertexCache(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count)
+{
+	meshopt_optimizeVertexCacheTable(destination, indices, index_count, vertex_count, &meshopt::kVertexScoreTable);
+}
+
+void meshopt_optimizeVertexCacheStrip(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count)
+{
+	meshopt_optimizeVertexCacheTable(destination, indices, index_count, vertex_count, &meshopt::kVertexScoreTableStrip);
+}
+
 void meshopt_optimizeVertexCacheFifo(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count, unsigned int cache_size)
 {
 	using namespace meshopt;

3rdparty/meshoptimizer/tools/basistoktx.cpp

@@ -1,359 +0,0 @@
-#include <stdexcept>
-#include <string>
-#include <vector>
-
-#include <assert.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "basisu_format.h"
-#include "khr_df.h"
-
-// KTX Specification: 2. File Structure
-struct Ktx2Header
-{
-	uint8_t identifier[12];
-	uint32_t vkFormat;
-	uint32_t typeSize;
-	uint32_t pixelWidth;
-	uint32_t pixelHeight;
-	uint32_t pixelDepth;
-	uint32_t layerCount;
-	uint32_t faceCount;
-	uint32_t levelCount;
-	uint32_t supercompressionScheme;
-
-	uint32_t dfdByteOffset;
-	uint32_t dfdByteLength;
-	uint32_t kvdByteOffset;
-	uint32_t kvdByteLength;
-	uint64_t sgdByteOffset;
-	uint64_t sgdByteLength;
-};
-
-struct Ktx2LevelIndex
-{
-	uint64_t byteOffset;
-	uint64_t byteLength;
-	uint64_t uncompressedByteLength;
-};
-
-enum
-{
-	Ktx2SupercompressionSchemeBasis = 1,
-};
-
-// KTX Specification: 3.1. identifier
-static const uint8_t Ktx2FileIdentifier[12] = {
-    0xAB, 0x4B, 0x54, 0x58, 0x20, 0x32, 0x30, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A, //
-};
-
-// KTX Specification: 3.12.2. Basis Universal Global Data
-struct Ktx2BasisGlobalHeader
-{
-	uint32_t globalFlags;
-	uint16_t endpointCount;
-	uint16_t selectorCount;
-	uint32_t endpointsByteLength;
-	uint32_t selectorsByteLength;
-	uint32_t tablesByteLength;
-	uint32_t extendedByteLength;
-};
-
-struct Ktx2BasisImageDesc
-{
-	uint32_t imageFlags;
-	uint32_t rgbSliceByteOffset;
-	uint32_t rgbSliceByteLength;
-	uint32_t alphaSliceByteOffset;
-	uint32_t alphaSliceByteLength;
-};
-
-template <typename T>
-static void read(const std::string& data, size_t offset, T& result)
-{
-	if (offset + sizeof(T) > data.size())
-		throw std::out_of_range("read");
-
-	memcpy(&result, &data[offset], sizeof(T));
-}
-
-template <typename T>
-static void write(std::string& data, const T& value)
-{
-	data.append(reinterpret_cast<const char*>(&value), sizeof(value));
-}
-
-template <typename T>
-static void write(std::string& data, size_t offset, const T& value)
-{
-	if (offset + sizeof(T) > data.size())
-		throw std::out_of_range("write");
-
-	memcpy(&data[offset], &value, sizeof(T));
-}
-
-static void createDfd(std::vector<uint32_t>& result, int channels, bool srgb)
-{
-	assert(channels <= 4);
-
-	int descriptor_size = KHR_DF_WORD_SAMPLESTART + channels * KHR_DF_WORD_SAMPLEWORDS;
-
-	result.clear();
-	result.resize(1 + descriptor_size);
-
-	result[0] = (1 + descriptor_size) * sizeof(uint32_t);
-
-	uint32_t* dfd = &result[1];
-
-	KHR_DFDSETVAL(dfd, VENDORID, KHR_DF_VENDORID_KHRONOS);
-	KHR_DFDSETVAL(dfd, DESCRIPTORTYPE, KHR_DF_KHR_DESCRIPTORTYPE_BASICFORMAT);
-	KHR_DFDSETVAL(dfd, VERSIONNUMBER, KHR_DF_VERSIONNUMBER_1_3);
-	KHR_DFDSETVAL(dfd, DESCRIPTORBLOCKSIZE, descriptor_size * sizeof(uint32_t));
-	KHR_DFDSETVAL(dfd, MODEL, KHR_DF_MODEL_RGBSDA);
-	KHR_DFDSETVAL(dfd, PRIMARIES, KHR_DF_PRIMARIES_BT709);
-	KHR_DFDSETVAL(dfd, TRANSFER, srgb ? KHR_DF_TRANSFER_SRGB : KHR_DF_TRANSFER_LINEAR);
-	KHR_DFDSETVAL(dfd, FLAGS, KHR_DF_FLAG_ALPHA_STRAIGHT);
-
-	static const khr_df_model_channels_e channel_enums[] = {
-	    KHR_DF_CHANNEL_RGBSDA_R,
-	    KHR_DF_CHANNEL_RGBSDA_G,
-	    KHR_DF_CHANNEL_RGBSDA_B,
-	    KHR_DF_CHANNEL_RGBSDA_A,
-	};
-
-	for (int i = 0; i < channels; ++i)
-	{
-		uint32_t qualifiers = (srgb && i == 3) ? KHR_DF_SAMPLE_DATATYPE_LINEAR : 0;
-
-		KHR_DFDSETSVAL(dfd, i, CHANNELID, channel_enums[i]);
-		KHR_DFDSETSVAL(dfd, i, QUALIFIERS, qualifiers);
-		KHR_DFDSETSVAL(dfd, i, SAMPLELOWER, 0);
-		KHR_DFDSETSVAL(dfd, i, SAMPLEUPPER, ~0u);
-	}
-}
-
-std::string basisToKtx(const std::string& basis, bool srgb)
-{
-	std::string ktx;
-
-	basist::basis_file_header basis_header;
-	read(basis, 0, basis_header);
-
-	assert(basis_header.m_sig == basist::basis_file_header::cBASISSigValue);
-
-	assert(basis_header.m_total_slices > 0);
-	assert(basis_header.m_total_images == 1);
-
-	assert(basis_header.m_format == 0);
-	assert(basis_header.m_flags & basist::cBASISHeaderFlagETC1S);
-	assert(!(basis_header.m_flags & basist::cBASISHeaderFlagYFlipped));
-	assert(basis_header.m_tex_type == basist::cBASISTexType2D);
-
-	bool has_alpha = (basis_header.m_flags & basist::cBASISHeaderFlagHasAlphaSlices) != 0;
-
-	std::vector<basist::basis_slice_desc> slices(basis_header.m_total_slices);
-
-	for (size_t i = 0; i < basis_header.m_total_slices; ++i)
-		read(basis, basis_header.m_slice_desc_file_ofs + i * sizeof(basist::basis_slice_desc), slices[i]);
-
-	assert(slices[0].m_level_index == 0);
-	uint32_t width = slices[0].m_orig_width;
-	uint32_t height = slices[0].m_orig_height;
-	uint32_t levels = has_alpha ? uint32_t(slices.size()) / 2 : uint32_t(slices.size());
-
-	Ktx2Header ktx_header = {};
-	memcpy(ktx_header.identifier, Ktx2FileIdentifier, sizeof(Ktx2FileIdentifier));
-	ktx_header.typeSize = 1;
-	ktx_header.pixelWidth = width;
-	ktx_header.pixelHeight = height;
-	ktx_header.layerCount = 0;
-	ktx_header.faceCount = 1;
-	ktx_header.levelCount = levels;
-	ktx_header.supercompressionScheme = Ktx2SupercompressionSchemeBasis;
-
-	size_t header_size = sizeof(Ktx2Header) + levels * sizeof(Ktx2LevelIndex);
-
-	std::vector<uint32_t> dfd;
-	createDfd(dfd, has_alpha ? 4 : 3, srgb);
-
-	const char* kvp_data[][2] = {
-	    {"KTXwriter", "gltfpack"},
-	};
-
-	std::string kvp;
-
-	for (size_t i = 0; i < sizeof(kvp_data) / sizeof(kvp_data[0]); ++i)
-	{
-		const char* key = kvp_data[i][0];
-		const char* value = kvp_data[i][1];
-
-		write(kvp, uint32_t(strlen(key) + strlen(value) + 2));
-		kvp += key;
-		kvp += '\0';
-		kvp += value;
-		kvp += '\0';
-
-		kvp.resize((kvp.size() + 3) & ~3);
-	}
-
-	size_t kvp_size = kvp.size();
-	size_t dfd_size = dfd.size() * sizeof(uint32_t);
-
-	size_t bgd_size =
-	    sizeof(Ktx2BasisGlobalHeader) + sizeof(Ktx2BasisImageDesc) * levels +
-	    basis_header.m_endpoint_cb_file_size + basis_header.m_selector_cb_file_size + basis_header.m_tables_file_size;
-
-	ktx_header.dfdByteOffset = uint32_t(header_size);
-	ktx_header.dfdByteLength = uint32_t(dfd_size);
-
-	ktx_header.kvdByteOffset = uint32_t(header_size + dfd_size);
-	ktx_header.kvdByteLength = uint32_t(kvp_size);
-
-	ktx_header.sgdByteOffset = (header_size + dfd_size + kvp_size + 7) & ~7;
-	ktx_header.sgdByteLength = bgd_size;
-
-	// KTX2 header
-	write(ktx, ktx_header);
-
-	size_t ktx_level_offset = ktx.size();
-
-	for (size_t i = 0; i < levels; ++i)
-	{
-		Ktx2LevelIndex le = {}; // This will be patched later
-		write(ktx, le);
-	}
-
-	// data format descriptor
-	for (size_t i = 0; i < dfd.size(); ++i)
-		write(ktx, dfd[i]);
-
-	// key/value pair data
-	ktx += kvp;
-	ktx.resize((ktx.size() + 7) & ~7);
-
-	// supercompression global data
-	Ktx2BasisGlobalHeader sgd_header = {};
-	sgd_header.globalFlags = basis_header.m_flags;
-	sgd_header.endpointCount = uint16_t(basis_header.m_total_endpoints);
-	sgd_header.selectorCount = uint16_t(basis_header.m_total_selectors);
-	sgd_header.endpointsByteLength = basis_header.m_endpoint_cb_file_size;
-	sgd_header.selectorsByteLength = basis_header.m_selector_cb_file_size;
-	sgd_header.tablesByteLength = basis_header.m_tables_file_size;
-	sgd_header.extendedByteLength = basis_header.m_extended_file_size;
-
-	write(ktx, sgd_header);
-
-	size_t sgd_level_offset = ktx.size();
-
-	for (size_t i = 0; i < levels; ++i)
-	{
-		Ktx2BasisImageDesc sgd_image = {}; // This will be patched later
-		write(ktx, sgd_image);
-	}
-
-	ktx.append(basis.substr(basis_header.m_endpoint_cb_file_ofs, basis_header.m_endpoint_cb_file_size));
-	ktx.append(basis.substr(basis_header.m_selector_cb_file_ofs, basis_header.m_selector_cb_file_size));
-	ktx.append(basis.substr(basis_header.m_tables_file_ofs, basis_header.m_tables_file_size));
-	ktx.append(basis.substr(basis_header.m_extended_file_ofs, basis_header.m_extended_file_size));
-
-	ktx.resize((ktx.size() + 7) & ~7);
-
-	// mip levels
-	for (size_t i = 0; i < levels; ++i)
-	{
-		size_t level_index = levels - i - 1;
-		size_t slice_index = level_index * (has_alpha + 1);
-
-		const basist::basis_slice_desc& slice = slices[slice_index];
-		const basist::basis_slice_desc* slice_alpha = has_alpha ? &slices[slice_index + 1] : 0;
-
-		assert(slice.m_image_index == 0);
-		assert(slice.m_level_index == level_index);
-
-		size_t file_offset = ktx.size();
-
-		ktx.append(basis.substr(slice.m_file_ofs, slice.m_file_size));
-
-		if (slice_alpha)
-			ktx.append(basis.substr(slice_alpha->m_file_ofs, slice_alpha->m_file_size));
-
-		Ktx2LevelIndex le = {};
-		le.byteOffset = file_offset;
-		le.byteLength = ktx.size() - file_offset;
-		le.uncompressedByteLength = 0;
-
-		write(ktx, ktx_level_offset + level_index * sizeof(Ktx2LevelIndex), le);
-
-		Ktx2BasisImageDesc sgd_image = {};
-		sgd_image.rgbSliceByteOffset = 0;
-		sgd_image.rgbSliceByteLength = slice.m_file_size;
-
-		if (slice_alpha)
-		{
-			sgd_image.alphaSliceByteOffset = slice.m_file_size;
-			sgd_image.alphaSliceByteLength = slice_alpha->m_file_size;
-		}
-
-		write(ktx, sgd_level_offset + level_index * sizeof(Ktx2BasisImageDesc), sgd_image);
-
-		ktx.resize((ktx.size() + 7) & ~7);
-	}
-
-	return ktx;
-}
-
-#ifdef STANDALONE
-bool readFile(const char* path, std::string& data)
-{
-	FILE* file = fopen(path, "rb");
-	if (!file)
-		return false;
-
-	fseek(file, 0, SEEK_END);
-	long length = ftell(file);
-	fseek(file, 0, SEEK_SET);
-
-	if (length <= 0)
-	{
-		fclose(file);
-		return false;
-	}
-
-	data.resize(length);
-	size_t result = fread(&data[0], 1, data.size(), file);
-	fclose(file);
-
-	return result == data.size();
-}
-
-bool writeFile(const char* path, const std::string& data)
-{
-	FILE* file = fopen(path, "wb");
-	if (!file)
-		return false;
-
-	size_t result = fwrite(&data[0], 1, data.size(), file);
-	fclose(file);
-
-	return result == data.size();
-}
-
-int main(int argc, const char** argv)
-{
-	if (argc < 2)
-		return 1;
-
-	std::string basis;
-	if (!readFile(argv[1], basis))
-		return 1;
-
-	std::string ktx = basisToKtx(basis, true);
-
-	if (!writeFile(argv[2], ktx))
-		return 1;
-
-	return 0;
-}
-#endif

3rdparty/meshoptimizer/tools/basisu_format.h

@@ -1,138 +0,0 @@
-// basis_file_headers.h + basisu.h
-// Copyright (C) 2019 Binomial LLC. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//    http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-#pragma once
-
-namespace basisu
-{
-	// Always little endian 2-4 byte unsigned int
-	template<uint32_t NumBytes>
-	struct packed_uint
-	{
-		uint8_t m_bytes[NumBytes];
-
-		operator uint32_t() const
-		{
-			uint32_t result = 0;
-			for (uint32_t i = 0; i < NumBytes; i++)
-				result |= m_bytes[i] << (8 * i);
-			return result;
-		}
-	};
-}
-
-namespace basist
-{
-	// Slice desc header flags
-	enum basis_slice_desc_flags
-	{
-		cSliceDescFlagsIsAlphaData = 1,
-		cSliceDescFlagsFrameIsIFrame = 2			// Video only: Frame doesn't refer to previous frame (no usage of conditional replenishment pred symbols)
-	};
-
-#pragma pack(push)
-#pragma pack(1)
-	struct basis_slice_desc
-	{
-		basisu::packed_uint<3> m_image_index;  // The index of the source image provided to the encoder (will always appear in order from first to last, first image index is 0, no skipping allowed)
-		basisu::packed_uint<1> m_level_index;	// The mipmap level index (mipmaps will always appear from largest to smallest)
-		basisu::packed_uint<1> m_flags;			// enum basis_slice_desc_flags
-
-		basisu::packed_uint<2> m_orig_width;	// The original image width (may not be a multiple of 4 pixels)
-		basisu::packed_uint<2> m_orig_height;  // The original image height (may not be a multiple of 4 pixels)
-
-		basisu::packed_uint<2> m_num_blocks_x;	// The slice's block X dimensions. Each block is 4x4 pixels. The slice's pixel resolution may or may not be a power of 2.
-		basisu::packed_uint<2> m_num_blocks_y;	// The slice's block Y dimensions. 
-
-		basisu::packed_uint<4> m_file_ofs;		// Offset from the header to the start of the slice's data
-		basisu::packed_uint<4> m_file_size;		// The size of the compressed slice data in bytes
-
-		basisu::packed_uint<2> m_slice_data_crc16; // The CRC16 of the compressed slice data, for extra-paranoid use cases
-	};
-
-	// File header files
-	enum basis_header_flags
-	{
-		cBASISHeaderFlagETC1S = 1,					// Always set for basis universal files
-		cBASISHeaderFlagYFlipped = 2,				// Set if the texture had to be Y flipped before encoding
-		cBASISHeaderFlagHasAlphaSlices = 4		// True if the odd slices contain alpha data
-	};
-
-	// The image type field attempts to describe how to interpret the image data in a Basis file.
-	// The encoder library doesn't really do anything special or different with these texture types, this is mostly here for the benefit of the user. 
-	// We do make sure the various constraints are followed (2DArray/cubemap/videoframes/volume implies that each image has the same resolution and # of mipmap levels, etc., cubemap implies that the # of image slices is a multiple of 6)
-	enum basis_texture_type
-	{
-		cBASISTexType2D = 0,					// An arbitrary array of 2D RGB or RGBA images with optional mipmaps, array size = # images, each image may have a different resolution and # of mipmap levels
-		cBASISTexType2DArray = 1,			// An array of 2D RGB or RGBA images with optional mipmaps, array size = # images, each image has the same resolution and mipmap levels
-		cBASISTexTypeCubemapArray = 2,	// an array of cubemap levels, total # of images must be divisable by 6, in X+, X-, Y+, Y-, Z+, Z- order, with optional mipmaps
-		cBASISTexTypeVideoFrames = 3,		// An array of 2D video frames, with optional mipmaps, # frames = # images, each image has the same resolution and # of mipmap levels
-		cBASISTexTypeVolume = 4,			// A 3D texture with optional mipmaps, Z dimension = # images, each image has the same resolution and # of mipmap levels
-
-		cBASISTexTypeTotal
-	};
-
-	enum
-	{
-		cBASISMaxUSPerFrame = 0xFFFFFF
-	};
-
-	struct basis_file_header
-	{
-		enum
-		{
-			cBASISSigValue = ('B' << 8) | 's',
-			cBASISFirstVersion = 0x10
-		};
-
-		basisu::packed_uint<2>      m_sig;				// 2 byte file signature
-		basisu::packed_uint<2>      m_ver;				// Baseline file version
-		basisu::packed_uint<2>      m_header_size;	// Header size in bytes, sizeof(basis_file_header)
-		basisu::packed_uint<2>      m_header_crc16;	// crc16 of the remaining header data
-
-		basisu::packed_uint<4>      m_data_size;		// The total size of all data after the header
-		basisu::packed_uint<2>      m_data_crc16;		// The CRC16 of all data after the header
-
-		basisu::packed_uint<3>      m_total_slices;	// The total # of compressed slices (1 slice per image, or 2 for alpha basis files)
-
-		basisu::packed_uint<3>      m_total_images;	// The total # of images
-				
-		basisu::packed_uint<1>      m_format;			// enum basist::block_format
-		basisu::packed_uint<2>      m_flags;			// enum basist::header_flags
-		basisu::packed_uint<1>      m_tex_type;		// enum basist::basis_texture_type
-		basisu::packed_uint<3>      m_us_per_frame;	// Framerate of video, in microseconds per frame
-
-		basisu::packed_uint<4>      m_reserved;		// For future use
-		basisu::packed_uint<4>      m_userdata0;		// For client use
-		basisu::packed_uint<4>      m_userdata1;		// For client use
-
-		basisu::packed_uint<2>      m_total_endpoints;			// The number of endpoints in the endpoint codebook 
-		basisu::packed_uint<4>      m_endpoint_cb_file_ofs;	// The compressed endpoint codebook's file offset relative to the header
-		basisu::packed_uint<3>      m_endpoint_cb_file_size;	// The compressed endpoint codebook's size in bytes
-
-		basisu::packed_uint<2>      m_total_selectors;			// The number of selectors in the endpoint codebook 
-		basisu::packed_uint<4>      m_selector_cb_file_ofs;	// The compressed selectors codebook's file offset relative to the header
-		basisu::packed_uint<3>      m_selector_cb_file_size;	// The compressed selector codebook's size in bytes
-
-		basisu::packed_uint<4>      m_tables_file_ofs;			// The file offset of the compressed Huffman codelength tables, for decompressing slices
-		basisu::packed_uint<4>      m_tables_file_size;			// The file size in bytes of the compressed huffman codelength tables
-
-		basisu::packed_uint<4>      m_slice_desc_file_ofs;		// The file offset to the slice description array, usually follows the header
-		
-		basisu::packed_uint<4>      m_extended_file_ofs;		// The file offset of the "extended" header and compressed data, for future use
-		basisu::packed_uint<4>      m_extended_file_size;		// The file size in bytes of the "extended" header and compressed data, for future use
-	};
-#pragma pack (pop)
-
-} // namespace basist

3rdparty/meshoptimizer/tools/cgltf.h

@@ -1,4913 +0,0 @@
-/**
- * cgltf - a single-file glTF 2.0 parser written in C99.
- *
- * Version: 1.4
- *
- * Website: https://github.com/jkuhlmann/cgltf
- *
- * Distributed under the MIT License, see notice at the end of this file.
- *
- * Building:
- * Include this file where you need the struct and function
- * declarations. Have exactly one source file where you define
- * `CGLTF_IMPLEMENTATION` before including this file to get the
- * function definitions.
- *
- * Reference:
- * `cgltf_result cgltf_parse(const cgltf_options*, const void*,
- * cgltf_size, cgltf_data**)` parses both glTF and GLB data. If
- * this function returns `cgltf_result_success`, you have to call
- * `cgltf_free()` on the created `cgltf_data*` variable.
- * Note that contents of external files for buffers and images are not
- * automatically loaded. You'll need to read these files yourself using
- * URIs in the `cgltf_data` structure.
- *
- * `cgltf_options` is the struct passed to `cgltf_parse()` to control
- * parts of the parsing process. You can use it to force the file type
- * and provide memory allocation callbacks. Should be zero-initialized
- * to trigger default behavior.
- *
- * `cgltf_data` is the struct allocated and filled by `cgltf_parse()`.
- * It generally mirrors the glTF format as described by the spec (see
- * https://github.com/KhronosGroup/glTF/tree/master/specification/2.0).
- *
- * `void cgltf_free(cgltf_data*)` frees the allocated `cgltf_data`
- * variable.
- *
- * `cgltf_result cgltf_load_buffers(const cgltf_options*, cgltf_data*,
- * const char* gltf_path)` can be optionally called to open and read buffer
- * files using the `FILE*` APIs. The `gltf_path` argument is the path to
- * the original glTF file, which allows the parser to resolve the path to
- * buffer files.
- *
- * `cgltf_result cgltf_load_buffer_base64(const cgltf_options* options,
- * cgltf_size size, const char* base64, void** out_data)` decodes
- * base64-encoded data content. Used internally by `cgltf_load_buffers()`
- * and may be useful if you're not dealing with normal files.
- *
- * `cgltf_result cgltf_parse_file(const cgltf_options* options, const
- * char* path, cgltf_data** out_data)` can be used to open the given
- * file using `FILE*` APIs and parse the data using `cgltf_parse()`.
- *
- * `cgltf_result cgltf_validate(cgltf_data*)` can be used to do additional
- * checks to make sure the parsed glTF data is valid.
- *
- * `cgltf_node_transform_local` converts the translation / rotation / scale properties of a node
- * into a mat4.
- *
- * `cgltf_node_transform_world` calls `cgltf_node_transform_local` on every ancestor in order
- * to compute the root-to-node transformation.
- *
- * `cgltf_accessor_unpack_floats` reads in the data from an accessor, applies sparse data (if any),
- * and converts them to floating point. Assumes that `cgltf_load_buffers` has already been called.
- * By passing null for the output pointer, users can find out how many floats are required in the
- * output buffer.
- *
- * `cgltf_accessor_num_components` is a tiny utility that tells you the dimensionality of
- * a certain accessor type. This can be used before `cgltf_accessor_unpack_floats` to help allocate
- * the necessary amount of memory.
- *
- * `cgltf_accessor_read_float` reads a certain element from a non-sparse accessor and converts it to
- * floating point, assuming that `cgltf_load_buffers` has already been called. The passed-in element
- * size is the number of floats in the output buffer, which should be in the range [1, 16]. Returns
- * false if the passed-in element_size is too small, or if the accessor is sparse.
- *
- * `cgltf_accessor_read_index` is similar to its floating-point counterpart, but it returns size_t
- * and only works with single-component data types.
- *
- * `cgltf_result cgltf_copy_extras_json(const cgltf_data*, const cgltf_extras*,
- * char* dest, cgltf_size* dest_size)` allows users to retrieve the "extras" data that
- * can be attached to many glTF objects (which can be arbitrary JSON data). The
- * `cgltf_extras` struct stores the offsets of the start and end of the extras JSON data
- * as it appears in the complete glTF JSON data. This function copies the extras data
- * into the provided buffer. If `dest` is NULL, the length of the data is written into
- * `dest_size`. You can then parse this data using your own JSON parser
- * or, if you've included the cgltf implementation using the integrated JSMN JSON parser.
- */
-#ifndef CGLTF_H_INCLUDED__
-#define CGLTF_H_INCLUDED__
-
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef size_t cgltf_size;
-typedef float cgltf_float;
-typedef int cgltf_int;
-typedef int cgltf_bool;
-
-typedef enum cgltf_file_type
-{
-	cgltf_file_type_invalid,
-	cgltf_file_type_gltf,
-	cgltf_file_type_glb,
-} cgltf_file_type;
-
-typedef struct cgltf_options
-{
-	cgltf_file_type type; /* invalid == auto detect */
-	cgltf_size json_token_count; /* 0 == auto */
-	void* (*memory_alloc)(void* user, cgltf_size size);
-	void (*memory_free) (void* user, void* ptr);
-	void* memory_user_data;
-} cgltf_options;
-
-typedef enum cgltf_result
-{
-	cgltf_result_success,
-	cgltf_result_data_too_short,
-	cgltf_result_unknown_format,
-	cgltf_result_invalid_json,
-	cgltf_result_invalid_gltf,
-	cgltf_result_invalid_options,
-	cgltf_result_file_not_found,
-	cgltf_result_io_error,
-	cgltf_result_out_of_memory,
-	cgltf_result_legacy_gltf,
-} cgltf_result;
-
-typedef enum cgltf_buffer_view_type
-{
-	cgltf_buffer_view_type_invalid,
-	cgltf_buffer_view_type_indices,
-	cgltf_buffer_view_type_vertices,
-} cgltf_buffer_view_type;
-
-typedef enum cgltf_attribute_type
-{
-	cgltf_attribute_type_invalid,
-	cgltf_attribute_type_position,
-	cgltf_attribute_type_normal,
-	cgltf_attribute_type_tangent,
-	cgltf_attribute_type_texcoord,
-	cgltf_attribute_type_color,
-	cgltf_attribute_type_joints,
-	cgltf_attribute_type_weights,
-} cgltf_attribute_type;
-
-typedef enum cgltf_component_type
-{
-	cgltf_component_type_invalid,
-	cgltf_component_type_r_8, /* BYTE */
-	cgltf_component_type_r_8u, /* UNSIGNED_BYTE */
-	cgltf_component_type_r_16, /* SHORT */
-	cgltf_component_type_r_16u, /* UNSIGNED_SHORT */
-	cgltf_component_type_r_32u, /* UNSIGNED_INT */
-	cgltf_component_type_r_32f, /* FLOAT */
-} cgltf_component_type;
-
-typedef enum cgltf_type
-{
-	cgltf_type_invalid,
-	cgltf_type_scalar,
-	cgltf_type_vec2,
-	cgltf_type_vec3,
-	cgltf_type_vec4,
-	cgltf_type_mat2,
-	cgltf_type_mat3,
-	cgltf_type_mat4,
-} cgltf_type;
-
-typedef enum cgltf_primitive_type
-{
-	cgltf_primitive_type_points,
-	cgltf_primitive_type_lines,
-	cgltf_primitive_type_line_loop,
-	cgltf_primitive_type_line_strip,
-	cgltf_primitive_type_triangles,
-	cgltf_primitive_type_triangle_strip,
-	cgltf_primitive_type_triangle_fan,
-} cgltf_primitive_type;
-
-typedef enum cgltf_alpha_mode
-{
-	cgltf_alpha_mode_opaque,
-	cgltf_alpha_mode_mask,
-	cgltf_alpha_mode_blend,
-} cgltf_alpha_mode;
-
-typedef enum cgltf_animation_path_type {
-	cgltf_animation_path_type_invalid,
-	cgltf_animation_path_type_translation,
-	cgltf_animation_path_type_rotation,
-	cgltf_animation_path_type_scale,
-	cgltf_animation_path_type_weights,
-} cgltf_animation_path_type;
-
-typedef enum cgltf_interpolation_type {
-	cgltf_interpolation_type_linear,
-	cgltf_interpolation_type_step,
-	cgltf_interpolation_type_cubic_spline,
-} cgltf_interpolation_type;
-
-typedef enum cgltf_camera_type {
-	cgltf_camera_type_invalid,
-	cgltf_camera_type_perspective,
-	cgltf_camera_type_orthographic,
-} cgltf_camera_type;
-
-typedef enum cgltf_light_type {
-	cgltf_light_type_invalid,
-	cgltf_light_type_directional,
-	cgltf_light_type_point,
-	cgltf_light_type_spot,
-} cgltf_light_type;
-
-typedef struct cgltf_extras {
-	cgltf_size start_offset;
-	cgltf_size end_offset;
-} cgltf_extras;
-
-typedef struct cgltf_buffer
-{
-	cgltf_size size;
-	char* uri;
-	void* data; /* loaded by cgltf_load_buffers */
-	cgltf_extras extras;
-} cgltf_buffer;
-
-typedef struct cgltf_buffer_view
-{
-	cgltf_buffer* buffer;
-	cgltf_size offset;
-	cgltf_size size;
-	cgltf_size stride; /* 0 == automatically determined by accessor */
-	cgltf_buffer_view_type type;
-	cgltf_extras extras;
-} cgltf_buffer_view;
-
-typedef struct cgltf_accessor_sparse
-{
-	cgltf_size count;
-	cgltf_buffer_view* indices_buffer_view;
-	cgltf_size indices_byte_offset;
-	cgltf_component_type indices_component_type;
-	cgltf_buffer_view* values_buffer_view;
-	cgltf_size values_byte_offset;
-	cgltf_extras extras;
-	cgltf_extras indices_extras;
-	cgltf_extras values_extras;
-} cgltf_accessor_sparse;
-
-typedef struct cgltf_accessor
-{
-	cgltf_component_type component_type;
-	cgltf_bool normalized;
-	cgltf_type type;
-	cgltf_size offset;
-	cgltf_size count;
-	cgltf_size stride;
-	cgltf_buffer_view* buffer_view;
-	cgltf_bool has_min;
-	cgltf_float min[16];
-	cgltf_bool has_max;
-	cgltf_float max[16];
-	cgltf_bool is_sparse;
-	cgltf_accessor_sparse sparse;
-	cgltf_extras extras;
-} cgltf_accessor;
-
-typedef struct cgltf_attribute
-{
-	char* name;
-	cgltf_attribute_type type;
-	cgltf_int index;
-	cgltf_accessor* data;
-} cgltf_attribute;
-
-typedef struct cgltf_image
-{
-	char* name;
-	char* uri;
-	cgltf_buffer_view* buffer_view;
-	char* mime_type;
-	cgltf_extras extras;
-} cgltf_image;
-
-typedef struct cgltf_sampler
-{
-	cgltf_int mag_filter;
-	cgltf_int min_filter;
-	cgltf_int wrap_s;
-	cgltf_int wrap_t;
-	cgltf_extras extras;
-} cgltf_sampler;
-
-typedef struct cgltf_texture
-{
-	char* name;
-	cgltf_image* image;
-	cgltf_sampler* sampler;
-	cgltf_extras extras;
-} cgltf_texture;
-
-typedef struct cgltf_texture_transform
-{
-	cgltf_float offset[2];
-	cgltf_float rotation;
-	cgltf_float scale[2];
-	cgltf_int texcoord;
-} cgltf_texture_transform;
-
-typedef struct cgltf_texture_view
-{
-	cgltf_texture* texture;
-	cgltf_int texcoord;
-	cgltf_float scale; /* equivalent to strength for occlusion_texture */
-	cgltf_bool has_transform;
-	cgltf_texture_transform transform;
-	cgltf_extras extras;
-} cgltf_texture_view;
-
-typedef struct cgltf_pbr_metallic_roughness
-{
-	cgltf_texture_view base_color_texture;
-	cgltf_texture_view metallic_roughness_texture;
-
-	cgltf_float base_color_factor[4];
-	cgltf_float metallic_factor;
-	cgltf_float roughness_factor;
-
-	cgltf_extras extras;
-} cgltf_pbr_metallic_roughness;
-
-typedef struct cgltf_pbr_specular_glossiness
-{
-	cgltf_texture_view diffuse_texture;
-	cgltf_texture_view specular_glossiness_texture;
-
-	cgltf_float diffuse_factor[4];
-	cgltf_float specular_factor[3];
-	cgltf_float glossiness_factor;
-} cgltf_pbr_specular_glossiness;
-
-typedef struct cgltf_material
-{
-	char* name;
-	cgltf_bool has_pbr_metallic_roughness;
-	cgltf_bool has_pbr_specular_glossiness;
-	cgltf_pbr_metallic_roughness pbr_metallic_roughness;
-	cgltf_pbr_specular_glossiness pbr_specular_glossiness;
-	cgltf_texture_view normal_texture;
-	cgltf_texture_view occlusion_texture;
-	cgltf_texture_view emissive_texture;
-	cgltf_float emissive_factor[3];
-	cgltf_alpha_mode alpha_mode;
-	cgltf_float alpha_cutoff;
-	cgltf_bool double_sided;
-	cgltf_bool unlit;
-	cgltf_extras extras;
-} cgltf_material;
-
-typedef struct cgltf_morph_target {
-	cgltf_attribute* attributes;
-	cgltf_size attributes_count;
-} cgltf_morph_target;
-
-typedef struct cgltf_primitive {
-	cgltf_primitive_type type;
-	cgltf_accessor* indices;
-	cgltf_material* material;
-	cgltf_attribute* attributes;
-	cgltf_size attributes_count;
-	cgltf_morph_target* targets;
-	cgltf_size targets_count;
-	cgltf_extras extras;
-} cgltf_primitive;
-
-typedef struct cgltf_mesh {
-	char* name;
-	cgltf_primitive* primitives;
-	cgltf_size primitives_count;
-	cgltf_float* weights;
-	cgltf_size weights_count;
-	char** target_names;
-	cgltf_size target_names_count;
-	cgltf_extras extras;
-} cgltf_mesh;
-
-typedef struct cgltf_node cgltf_node;
-
-typedef struct cgltf_skin {
-	char* name;
-	cgltf_node** joints;
-	cgltf_size joints_count;
-	cgltf_node* skeleton;
-	cgltf_accessor* inverse_bind_matrices;
-	cgltf_extras extras;
-} cgltf_skin;
-
-typedef struct cgltf_camera_perspective {
-	cgltf_float aspect_ratio;
-	cgltf_float yfov;
-	cgltf_float zfar;
-	cgltf_float znear;
-	cgltf_extras extras;
-} cgltf_camera_perspective;
-
-typedef struct cgltf_camera_orthographic {
-	cgltf_float xmag;
-	cgltf_float ymag;
-	cgltf_float zfar;
-	cgltf_float znear;
-	cgltf_extras extras;
-} cgltf_camera_orthographic;
-
-typedef struct cgltf_camera {
-	char* name;
-	cgltf_camera_type type;
-	union {
-		cgltf_camera_perspective perspective;
-		cgltf_camera_orthographic orthographic;
-	} data;
-	cgltf_extras extras;
-} cgltf_camera;
-
-typedef struct cgltf_light {
-	char* name;
-	cgltf_float color[3];
-	cgltf_float intensity;
-	cgltf_light_type type;
-	cgltf_float range;
-	cgltf_float spot_inner_cone_angle;
-	cgltf_float spot_outer_cone_angle;
-} cgltf_light;
-
-struct cgltf_node {
-	char* name;
-	cgltf_node* parent;
-	cgltf_node** children;
-	cgltf_size children_count;
-	cgltf_skin* skin;
-	cgltf_mesh* mesh;
-	cgltf_camera* camera;
-	cgltf_light* light;
-	cgltf_float* weights;
-	cgltf_size weights_count;
-	cgltf_bool has_translation;
-	cgltf_bool has_rotation;
-	cgltf_bool has_scale;
-	cgltf_bool has_matrix;
-	cgltf_float translation[3];
-	cgltf_float rotation[4];
-	cgltf_float scale[3];
-	cgltf_float matrix[16];
-	cgltf_extras extras;
-};
-
-typedef struct cgltf_scene {
-	char* name;
-	cgltf_node** nodes;
-	cgltf_size nodes_count;
-	cgltf_extras extras;
-} cgltf_scene;
-
-typedef struct cgltf_animation_sampler {
-	cgltf_accessor* input;
-	cgltf_accessor* output;
-	cgltf_interpolation_type interpolation;
-	cgltf_extras extras;
-} cgltf_animation_sampler;
-
-typedef struct cgltf_animation_channel {
-	cgltf_animation_sampler* sampler;
-	cgltf_node* target_node;
-	cgltf_animation_path_type target_path;
-	cgltf_extras extras;
-} cgltf_animation_channel;
-
-typedef struct cgltf_animation {
-	char* name;
-	cgltf_animation_sampler* samplers;
-	cgltf_size samplers_count;
-	cgltf_animation_channel* channels;
-	cgltf_size channels_count;
-	cgltf_extras extras;
-} cgltf_animation;
-
-typedef struct cgltf_asset {
-	char* copyright;
-	char* generator;
-	char* version;
-	char* min_version;
-	cgltf_extras extras;
-} cgltf_asset;
-
-typedef struct cgltf_data
-{
-	cgltf_file_type file_type;
-	void* file_data;
-
-	cgltf_asset asset;
-
-	cgltf_mesh* meshes;
-	cgltf_size meshes_count;
-
-	cgltf_material* materials;
-	cgltf_size materials_count;
-
-	cgltf_accessor* accessors;
-	cgltf_size accessors_count;
-
-	cgltf_buffer_view* buffer_views;
-	cgltf_size buffer_views_count;
-
-	cgltf_buffer* buffers;
-	cgltf_size buffers_count;
-
-	cgltf_image* images;
-	cgltf_size images_count;
-
-	cgltf_texture* textures;
-	cgltf_size textures_count;
-
-	cgltf_sampler* samplers;
-	cgltf_size samplers_count;
-
-	cgltf_skin* skins;
-	cgltf_size skins_count;
-
-	cgltf_camera* cameras;
-	cgltf_size cameras_count;
-
-	cgltf_light* lights;
-	cgltf_size lights_count;
-
-	cgltf_node* nodes;
-	cgltf_size nodes_count;
-
-	cgltf_scene* scenes;
-	cgltf_size scenes_count;
-
-	cgltf_scene* scene;
-
-	cgltf_animation* animations;
-	cgltf_size animations_count;
-
-	cgltf_extras extras;
-
-	char** extensions_used;
-	cgltf_size extensions_used_count;
-
-	char** extensions_required;
-	cgltf_size extensions_required_count;
-
-	const char* json;
-	cgltf_size json_size;
-
-	const void* bin;
-	cgltf_size bin_size;
-
-	void (*memory_free) (void* user, void* ptr);
-	void* memory_user_data;
-} cgltf_data;
-
-cgltf_result cgltf_parse(
-		const cgltf_options* options,
-		const void* data,
-		cgltf_size size,
-		cgltf_data** out_data);
-
-cgltf_result cgltf_parse_file(
-		const cgltf_options* options,
-		const char* path,
-		cgltf_data** out_data);
-
-cgltf_result cgltf_load_buffers(
-		const cgltf_options* options,
-		cgltf_data* data,
-		const char* gltf_path);
-
-
-cgltf_result cgltf_load_buffer_base64(const cgltf_options* options, cgltf_size size, const char* base64, void** out_data);
-
-cgltf_result cgltf_validate(cgltf_data* data);
-
-void cgltf_free(cgltf_data* data);
-
-void cgltf_node_transform_local(const cgltf_node* node, cgltf_float* out_matrix);
-void cgltf_node_transform_world(const cgltf_node* node, cgltf_float* out_matrix);
-
-cgltf_bool cgltf_accessor_read_float(const cgltf_accessor* accessor, cgltf_size index, cgltf_float* out, cgltf_size element_size);
-cgltf_size cgltf_accessor_read_index(const cgltf_accessor* accessor, cgltf_size index);
-
-cgltf_size cgltf_num_components(cgltf_type type);
-
-cgltf_size cgltf_accessor_unpack_floats(const cgltf_accessor* accessor, cgltf_float* out, cgltf_size float_count);
-
-cgltf_result cgltf_copy_extras_json(const cgltf_data* data, const cgltf_extras* extras, char* dest, cgltf_size* dest_size);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* #ifndef CGLTF_H_INCLUDED__ */
-
-/*
- *
- * Stop now, if you are only interested in the API.
- * Below, you find the implementation.
- *
- */
-
-#ifdef __INTELLISENSE__
-/* This makes MSVC intellisense work. */
-#define CGLTF_IMPLEMENTATION
-#endif
-
-#ifdef CGLTF_IMPLEMENTATION
-
-#include <stdint.h> /* For uint8_t, uint32_t */
-#include <string.h> /* For strncpy */
-#include <stdlib.h> /* For malloc, free */
-#include <stdio.h>  /* For fopen */
-#include <limits.h> /* For UINT_MAX etc */
-
-/* JSMN_PARENT_LINKS is necessary to make parsing large structures linear in input size */
-#define JSMN_PARENT_LINKS
-
-/* JSMN_STRICT is necessary to reject invalid JSON documents */
-#define JSMN_STRICT
-
-/*
- * -- jsmn.h start --
- * Source: https://github.com/zserge/jsmn
- * License: MIT
- */
-typedef enum {
-	JSMN_UNDEFINED = 0,
-	JSMN_OBJECT = 1,
-	JSMN_ARRAY = 2,
-	JSMN_STRING = 3,
-	JSMN_PRIMITIVE = 4
-} jsmntype_t;
-enum jsmnerr {
-	/* Not enough tokens were provided */
-	JSMN_ERROR_NOMEM = -1,
-	/* Invalid character inside JSON string */
-	JSMN_ERROR_INVAL = -2,
-	/* The string is not a full JSON packet, more bytes expected */
-	JSMN_ERROR_PART = -3
-};
-typedef struct {
-	jsmntype_t type;
-	int start;
-	int end;
-	int size;
-#ifdef JSMN_PARENT_LINKS
-	int parent;
-#endif
-} jsmntok_t;
-typedef struct {
-	unsigned int pos; /* offset in the JSON string */
-	unsigned int toknext; /* next token to allocate */
-	int toksuper; /* superior token node, e.g parent object or array */
-} jsmn_parser;
-static void jsmn_init(jsmn_parser *parser);
-static int jsmn_parse(jsmn_parser *parser, const char *js, size_t len, jsmntok_t *tokens, size_t num_tokens);
-/*
- * -- jsmn.h end --
- */
-
-
-static const cgltf_size GlbHeaderSize = 12;
-static const cgltf_size GlbChunkHeaderSize = 8;
-static const uint32_t GlbVersion = 2;
-static const uint32_t GlbMagic = 0x46546C67;
-static const uint32_t GlbMagicJsonChunk = 0x4E4F534A;
-static const uint32_t GlbMagicBinChunk = 0x004E4942;
-
-static void* cgltf_default_alloc(void* user, cgltf_size size)
-{
-	(void)user;
-	return malloc(size);
-}
-
-static void cgltf_default_free(void* user, void* ptr)
-{
-	(void)user;
-	free(ptr);
-}
-
-static void* cgltf_calloc(cgltf_options* options, size_t element_size, cgltf_size count)
-{
-	if (SIZE_MAX / element_size < count)
-	{
-		return NULL;
-	}
-	void* result = options->memory_alloc(options->memory_user_data, element_size * count);
-	if (!result)
-	{
-		return NULL;
-	}
-	memset(result, 0, element_size * count);
-	return result;
-}
-
-static cgltf_result cgltf_parse_json(cgltf_options* options, const uint8_t* json_chunk, cgltf_size size, cgltf_data** out_data);
-
-cgltf_result cgltf_parse(const cgltf_options* options, const void* data, cgltf_size size, cgltf_data** out_data)
-{
-	if (size < GlbHeaderSize)
-	{
-		return cgltf_result_data_too_short;
-	}
-
-	if (options == NULL)
-	{
-		return cgltf_result_invalid_options;
-	}
-
-	cgltf_options fixed_options = *options;
-	if (fixed_options.memory_alloc == NULL)
-	{
-		fixed_options.memory_alloc = &cgltf_default_alloc;
-	}
-	if (fixed_options.memory_free == NULL)
-	{
-		fixed_options.memory_free = &cgltf_default_free;
-	}
-
-	uint32_t tmp;
-	// Magic
-	memcpy(&tmp, data, 4);
-	if (tmp != GlbMagic)
-	{
-		if (fixed_options.type == cgltf_file_type_invalid)
-		{
-			fixed_options.type = cgltf_file_type_gltf;
-		}
-		else if (fixed_options.type == cgltf_file_type_glb)
-		{
-			return cgltf_result_unknown_format;
-		}
-	}
-
-	if (fixed_options.type == cgltf_file_type_gltf)
-	{
-		cgltf_result json_result = cgltf_parse_json(&fixed_options, (const uint8_t*)data, size, out_data);
-		if (json_result != cgltf_result_success)
-		{
-			return json_result;
-		}
-
-		(*out_data)->file_type = cgltf_file_type_gltf;
-
-		return cgltf_result_success;
-	}
-
-	const uint8_t* ptr = (const uint8_t*)data;
-	// Version
-	memcpy(&tmp, ptr + 4, 4);
-	uint32_t version = tmp;
-	if (version != GlbVersion)
-	{
-		return version < GlbVersion ? cgltf_result_legacy_gltf : cgltf_result_unknown_format;
-	}
-
-	// Total length
-	memcpy(&tmp, ptr + 8, 4);
-	if (tmp > size)
-	{
-		return cgltf_result_data_too_short;
-	}
-
-	const uint8_t* json_chunk = ptr + GlbHeaderSize;
-
-	if (GlbHeaderSize + GlbChunkHeaderSize > size)
-	{
-		return cgltf_result_data_too_short;
-	}
-
-	// JSON chunk: length
-	uint32_t json_length;
-	memcpy(&json_length, json_chunk, 4);
-	if (GlbHeaderSize + GlbChunkHeaderSize + json_length > size)
-	{
-		return cgltf_result_data_too_short;
-	}
-
-	// JSON chunk: magic
-	memcpy(&tmp, json_chunk + 4, 4);
-	if (tmp != GlbMagicJsonChunk)
-	{
-		return cgltf_result_unknown_format;
-	}
-
-	json_chunk += GlbChunkHeaderSize;
-
-	const void* bin = 0;
-	cgltf_size bin_size = 0;
-
-	if (GlbHeaderSize + GlbChunkHeaderSize + json_length + GlbChunkHeaderSize <= size)
-	{
-		// We can read another chunk
-		const uint8_t* bin_chunk = json_chunk + json_length;
-
-		// Bin chunk: length
-		uint32_t bin_length;
-		memcpy(&bin_length, bin_chunk, 4);
-		if (GlbHeaderSize + GlbChunkHeaderSize + json_length + GlbChunkHeaderSize + bin_length > size)
-		{
-			return cgltf_result_data_too_short;
-		}
-
-		// Bin chunk: magic
-		memcpy(&tmp, bin_chunk + 4, 4);
-		if (tmp != GlbMagicBinChunk)
-		{
-			return cgltf_result_unknown_format;
-		}
-
-		bin_chunk += GlbChunkHeaderSize;
-
-		bin = bin_chunk;
-		bin_size = bin_length;
-	}
-
-	cgltf_result json_result = cgltf_parse_json(&fixed_options, json_chunk, json_length, out_data);
-	if (json_result != cgltf_result_success)
-	{
-		return json_result;
-	}
-
-	(*out_data)->file_type = cgltf_file_type_glb;
-	(*out_data)->bin = bin;
-	(*out_data)->bin_size = bin_size;
-
-	return cgltf_result_success;
-}
-
-cgltf_result cgltf_parse_file(const cgltf_options* options, const char* path, cgltf_data** out_data)
-{
-	if (options == NULL)
-	{
-		return cgltf_result_invalid_options;
-	}
-
-	void* (*memory_alloc)(void*, cgltf_size) = options->memory_alloc ? options->memory_alloc : &cgltf_default_alloc;
-	void (*memory_free)(void*, void*) = options->memory_free ? options->memory_free : &cgltf_default_free;
-
-	FILE* file = fopen(path, "rb");
-	if (!file)
-	{
-		return cgltf_result_file_not_found;
-	}
-
-	fseek(file, 0, SEEK_END);
-
-	long length = ftell(file);
-	if (length < 0)
-	{
-		fclose(file);
-		return cgltf_result_io_error;
-	}
-
-	fseek(file, 0, SEEK_SET);
-
-	char* file_data = (char*)memory_alloc(options->memory_user_data, length);
-	if (!file_data)
-	{
-		fclose(file);
-		return cgltf_result_out_of_memory;
-	}
-
-	cgltf_size file_size = (cgltf_size)length;
-	cgltf_size read_size = fread(file_data, 1, file_size, file);
-
-	fclose(file);
-
-	if (read_size != file_size)
-	{
-		memory_free(options->memory_user_data, file_data);
-		return cgltf_result_io_error;
-	}
-
-	cgltf_result result = cgltf_parse(options, file_data, file_size, out_data);
-
-	if (result != cgltf_result_success)
-	{
-		memory_free(options->memory_user_data, file_data);
-		return result;
-	}
-
-	(*out_data)->file_data = file_data;
-
-	return cgltf_result_success;
-}
-
-static void cgltf_combine_paths(char* path, const char* base, const char* uri)
-{
-	const char* s0 = strrchr(base, '/');
-	const char* s1 = strrchr(base, '\\');
-	const char* slash = s0 ? (s1 && s1 > s0 ? s1 : s0) : s1;
-
-	if (slash)
-	{
-		size_t prefix = slash - base + 1;
-
-		strncpy(path, base, prefix);
-		strcpy(path + prefix, uri);
-	}
-	else
-	{
-		strcpy(path, uri);
-	}
-}
-
-static cgltf_result cgltf_load_buffer_file(const cgltf_options* options, cgltf_size size, const char* uri, const char* gltf_path, void** out_data)
-{
-	void* (*memory_alloc)(void*, cgltf_size) = options->memory_alloc ? options->memory_alloc : &cgltf_default_alloc;
-	void (*memory_free)(void*, void*) = options->memory_free ? options->memory_free : &cgltf_default_free;
-
-	char* path = (char*)memory_alloc(options->memory_user_data, strlen(uri) + strlen(gltf_path) + 1);
-	if (!path)
-	{
-		return cgltf_result_out_of_memory;
-	}
-
-	cgltf_combine_paths(path, gltf_path, uri);
-
-	FILE* file = fopen(path, "rb");
-
-	memory_free(options->memory_user_data, path);
-
-	if (!file)
-	{
-		return cgltf_result_file_not_found;
-	}
-
-	char* file_data = (char*)memory_alloc(options->memory_user_data, size);
-	if (!file_data)
-	{
-		fclose(file);
-		return cgltf_result_out_of_memory;
-	}
-
-	cgltf_size read_size = fread(file_data, 1, size, file);
-
-	fclose(file);
-
-	if (read_size != size)
-	{
-		memory_free(options->memory_user_data, file_data);
-		return cgltf_result_io_error;
-	}
-
-	*out_data = file_data;
-
-	return cgltf_result_success;
-}
-
-cgltf_result cgltf_load_buffer_base64(const cgltf_options* options, cgltf_size size, const char* base64, void** out_data)
-{
-	void* (*memory_alloc)(void*, cgltf_size) = options->memory_alloc ? options->memory_alloc : &cgltf_default_alloc;
-	void (*memory_free)(void*, void*) = options->memory_free ? options->memory_free : &cgltf_default_free;
-
-	unsigned char* data = (unsigned char*)memory_alloc(options->memory_user_data, size);
-	if (!data)
-	{
-		return cgltf_result_out_of_memory;
-	}
-
-	unsigned int buffer = 0;
-	unsigned int buffer_bits = 0;
-
-	for (cgltf_size i = 0; i < size; ++i)
-	{
-		while (buffer_bits < 8)
-		{
-			char ch = *base64++;
-
-			int index =
-				(unsigned)(ch - 'A') < 26 ? (ch - 'A') :
-				(unsigned)(ch - 'a') < 26 ? (ch - 'a') + 26 :
-				(unsigned)(ch - '0') < 10 ? (ch - '0') + 52 :
-				ch == '+' ? 62 :
-				ch == '/' ? 63 :
-				-1;
-
-			if (index < 0)
-			{
-				memory_free(options->memory_user_data, data);
-				return cgltf_result_io_error;
-			}
-
-			buffer = (buffer << 6) | index;
-			buffer_bits += 6;
-		}
-
-		data[i] = (unsigned char)(buffer >> (buffer_bits - 8));
-		buffer_bits -= 8;
-	}
-
-	*out_data = data;
-
-	return cgltf_result_success;
-}
-
-cgltf_result cgltf_load_buffers(const cgltf_options* options, cgltf_data* data, const char* gltf_path)
-{
-	if (options == NULL)
-	{
-		return cgltf_result_invalid_options;
-	}
-
-	if (data->buffers_count && data->buffers[0].data == NULL && data->buffers[0].uri == NULL && data->bin)
-	{
-		if (data->bin_size < data->buffers[0].size)
-		{
-			return cgltf_result_data_too_short;
-		}
-
-		data->buffers[0].data = (void*)data->bin;
-	}
-
-	for (cgltf_size i = 0; i < data->buffers_count; ++i)
-	{
-		if (data->buffers[i].data)
-		{
-			continue;
-		}
-
-		const char* uri = data->buffers[i].uri;
-
-		if (uri == NULL)
-		{
-			continue;
-		}
-
-		if (strncmp(uri, "data:", 5) == 0)
-		{
-			const char* comma = strchr(uri, ',');
-
-			if (comma && comma - uri >= 7 && strncmp(comma - 7, ";base64", 7) == 0)
-			{
-				cgltf_result res = cgltf_load_buffer_base64(options, data->buffers[i].size, comma + 1, &data->buffers[i].data);
-
-				if (res != cgltf_result_success)
-				{
-					return res;
-				}
-			}
-			else
-			{
-				return cgltf_result_unknown_format;
-			}
-		}
-		else if (strstr(uri, "://") == NULL && gltf_path)
-		{
-			cgltf_result res = cgltf_load_buffer_file(options, data->buffers[i].size, uri, gltf_path, &data->buffers[i].data);
-
-			if (res != cgltf_result_success)
-			{
-				return res;
-			}
-		}
-		else
-		{
-			return cgltf_result_unknown_format;
-		}
-	}
-
-	return cgltf_result_success;
-}
-
-static cgltf_size cgltf_calc_size(cgltf_type type, cgltf_component_type component_type);
-
-static cgltf_size cgltf_calc_index_bound(cgltf_buffer_view* buffer_view, cgltf_size offset, cgltf_component_type component_type, cgltf_size count)
-{
-	char* data = (char*)buffer_view->buffer->data + offset + buffer_view->offset;
-	cgltf_size bound = 0;
-
-	switch (component_type)
-	{
-	case cgltf_component_type_r_8u:
-		for (size_t i = 0; i < count; ++i)
-		{
-			cgltf_size v = ((unsigned char*)data)[i];
-			bound = bound > v ? bound : v;
-		}
-		break;
-
-	case cgltf_component_type_r_16u:
-		for (size_t i = 0; i < count; ++i)
-		{
-			cgltf_size v = ((unsigned short*)data)[i];
-			bound = bound > v ? bound : v;
-		}
-		break;
-
-	case cgltf_component_type_r_32u:
-		for (size_t i = 0; i < count; ++i)
-		{
-			cgltf_size v = ((unsigned int*)data)[i];
-			bound = bound > v ? bound : v;
-		}
-		break;
-
-	default:
-		;
-	}
-
-	return bound;
-}
-
-cgltf_result cgltf_validate(cgltf_data* data)
-{
-	for (cgltf_size i = 0; i < data->accessors_count; ++i)
-	{
-		cgltf_accessor* accessor = &data->accessors[i];
-
-		cgltf_size element_size = cgltf_calc_size(accessor->type, accessor->component_type);
-
-		if (accessor->buffer_view)
-		{
-			cgltf_size req_size = accessor->offset + accessor->stride * (accessor->count - 1) + element_size;
-
-			if (accessor->buffer_view->size < req_size)
-			{
-				return cgltf_result_data_too_short;
-			}
-		}
-
-		if (accessor->is_sparse)
-		{
-			cgltf_accessor_sparse* sparse = &accessor->sparse;
-
-			cgltf_size indices_component_size = cgltf_calc_size(cgltf_type_scalar, sparse->indices_component_type);
-			cgltf_size indices_req_size = sparse->indices_byte_offset + indices_component_size * sparse->count;
-			cgltf_size values_req_size = sparse->values_byte_offset + element_size * sparse->count;
-
-			if (sparse->indices_buffer_view->size < indices_req_size ||
-				sparse->values_buffer_view->size < values_req_size)
-			{
-				return cgltf_result_data_too_short;
-			}
-
-			if (sparse->indices_component_type != cgltf_component_type_r_8u &&
-				sparse->indices_component_type != cgltf_component_type_r_16u &&
-				sparse->indices_component_type != cgltf_component_type_r_32u)
-			{
-				return cgltf_result_invalid_gltf;
-			}
-
-			if (sparse->indices_buffer_view->buffer->data)
-			{
-				cgltf_size index_bound = cgltf_calc_index_bound(sparse->indices_buffer_view, sparse->indices_byte_offset, sparse->indices_component_type, sparse->count);
-
-				if (index_bound >= accessor->count)
-				{
-					return cgltf_result_data_too_short;
-				}
-			}
-		}
-	}
-
-	for (cgltf_size i = 0; i < data->buffer_views_count; ++i)
-	{
-		cgltf_size req_size = data->buffer_views[i].offset + data->buffer_views[i].size;
-
-		if (data->buffer_views[i].buffer && data->buffer_views[i].buffer->size < req_size)
-		{
-			return cgltf_result_data_too_short;
-		}
-	}
-
-	for (cgltf_size i = 0; i < data->meshes_count; ++i)
-	{
-		if (data->meshes[i].weights)
-		{
-			if (data->meshes[i].primitives_count && data->meshes[i].primitives[0].targets_count != data->meshes[i].weights_count)
-			{
-				return cgltf_result_invalid_gltf;
-			}
-		}
-
-		if (data->meshes[i].target_names)
-		{
-			if (data->meshes[i].primitives_count && data->meshes[i].primitives[0].targets_count != data->meshes[i].target_names_count)
-			{
-				return cgltf_result_invalid_gltf;
-			}
-		}
-
-		for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
-		{
-			if (data->meshes[i].primitives[j].targets_count != data->meshes[i].primitives[0].targets_count)
-			{
-				return cgltf_result_invalid_gltf;
-			}
-
-			if (data->meshes[i].primitives[j].attributes_count)
-			{
-				cgltf_accessor* first = data->meshes[i].primitives[j].attributes[0].data;
-
-				for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
-				{
-					if (data->meshes[i].primitives[j].attributes[k].data->count != first->count)
-					{
-						return cgltf_result_invalid_gltf;
-					}
-				}
-
-				for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
-				{
-					for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
-					{
-						if (data->meshes[i].primitives[j].targets[k].attributes[m].data->count != first->count)
-						{
-							return cgltf_result_invalid_gltf;
-						}
-					}
-				}
-
-				cgltf_accessor* indices = data->meshes[i].primitives[j].indices;
-
-				if (indices &&
-					indices->component_type != cgltf_component_type_r_8u &&
-					indices->component_type != cgltf_component_type_r_16u &&
-					indices->component_type != cgltf_component_type_r_32u)
-				{
-					return cgltf_result_invalid_gltf;
-				}
-
-				if (indices && indices->buffer_view && indices->buffer_view->buffer->data)
-				{
-					cgltf_size index_bound = cgltf_calc_index_bound(indices->buffer_view, indices->offset, indices->component_type, indices->count);
-
-					if (index_bound >= first->count)
-					{
-						return cgltf_result_data_too_short;
-					}
-				}
-			}
-		}
-	}
-
-	for (cgltf_size i = 0; i < data->nodes_count; ++i)
-	{
-		if (data->nodes[i].weights && data->nodes[i].mesh)
-		{
-			if (data->nodes[i].mesh->primitives_count && data->nodes[i].mesh->primitives[0].targets_count != data->nodes[i].weights_count)
-			{
-				return cgltf_result_invalid_gltf;
-			}
-		}
-	}
-
-	for (cgltf_size i = 0; i < data->nodes_count; ++i)
-	{
-		cgltf_node* p1 = data->nodes[i].parent;
-		cgltf_node* p2 = p1 ? p1->parent : NULL;
-
-		while (p1 && p2)
-		{
-			if (p1 == p2)
-			{
-				return cgltf_result_invalid_gltf;
-			}
-
-			p1 = p1->parent;
-			p2 = p2->parent ? p2->parent->parent : NULL;
-		}
-	}
-
-	for (cgltf_size i = 0; i < data->scenes_count; ++i)
-	{
-		for (cgltf_size j = 0; j < data->scenes[i].nodes_count; ++j)
-		{
-			if (data->scenes[i].nodes[j]->parent)
-			{
-				return cgltf_result_invalid_gltf;
-			}
-		}
-	}
-
-	for (cgltf_size i = 0; i < data->animations_count; ++i)
-	{
-		for (cgltf_size j = 0; j < data->animations[i].channels_count; ++j)
-		{
-			cgltf_animation_channel* channel = &data->animations[i].channels[j];
-
-			if (!channel->target_node)
-			{
-				continue;
-			}
-
-			cgltf_size components = 1;
-
-			if (channel->target_path == cgltf_animation_path_type_weights)
-			{
-				if (!channel->target_node->mesh || !channel->target_node->mesh->primitives_count)
-				{
-					return cgltf_result_invalid_gltf;
-				}
-
-				components = channel->target_node->mesh->primitives[0].targets_count;
-			}
-
-			cgltf_size values = channel->sampler->interpolation == cgltf_interpolation_type_cubic_spline ? 3 : 1;
-
-			if (channel->sampler->input->count * components * values != channel->sampler->output->count)
-			{
-				return cgltf_result_data_too_short;
-			}
-		}
-	}
-
-	return cgltf_result_success;
-}
-
-cgltf_result cgltf_copy_extras_json(const cgltf_data* data, const cgltf_extras* extras, char* dest, cgltf_size* dest_size)
-{
-	cgltf_size json_size = extras->end_offset - extras->start_offset;
-
-	if (!dest)
-	{
-		if (dest_size)
-		{
-			*dest_size = json_size + 1;
-			return cgltf_result_success;
-		}
-		return cgltf_result_invalid_options;
-	}
-
-	if (*dest_size + 1 < json_size)
-	{
-		strncpy(dest, data->json + extras->start_offset, *dest_size - 1);
-		dest[*dest_size - 1] = 0;
-	}
-	else
-	{
-		strncpy(dest, data->json + extras->start_offset, json_size);
-		dest[json_size] = 0;
-	}
-
-	return cgltf_result_success;
-}
-
-void cgltf_free(cgltf_data* data)
-{
-	if (!data)
-	{
-		return;
-	}
-
-	data->memory_free(data->memory_user_data, data->asset.copyright);
-	data->memory_free(data->memory_user_data, data->asset.generator);
-	data->memory_free(data->memory_user_data, data->asset.version);
-	data->memory_free(data->memory_user_data, data->asset.min_version);
-
-	data->memory_free(data->memory_user_data, data->accessors);
-	data->memory_free(data->memory_user_data, data->buffer_views);
-
-	for (cgltf_size i = 0; i < data->buffers_count; ++i)
-	{
-		if (data->buffers[i].data != data->bin)
-		{
-			data->memory_free(data->memory_user_data, data->buffers[i].data);
-		}
-
-		data->memory_free(data->memory_user_data, data->buffers[i].uri);
-	}
-
-	data->memory_free(data->memory_user_data, data->buffers);
-
-	for (cgltf_size i = 0; i < data->meshes_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->meshes[i].name);
-
-		for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
-		{
-			for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
-			{
-				data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].attributes[k].name);
-			}
-
-			data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].attributes);
-
-			for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
-			{
-				for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
-				{
-					data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].targets[k].attributes[m].name);
-				}
-
-				data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].targets[k].attributes);
-			}
-
-			data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].targets);
-		}
-
-		data->memory_free(data->memory_user_data, data->meshes[i].primitives);
-		data->memory_free(data->memory_user_data, data->meshes[i].weights);
-
-		for (cgltf_size j = 0; j < data->meshes[i].target_names_count; ++j)
-		{
-			data->memory_free(data->memory_user_data, data->meshes[i].target_names[j]);
-		}
-
-		data->memory_free(data->memory_user_data, data->meshes[i].target_names);
-	}
-
-	data->memory_free(data->memory_user_data, data->meshes);
-
-	for (cgltf_size i = 0; i < data->materials_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->materials[i].name);
-	}
-
-	data->memory_free(data->memory_user_data, data->materials);
-
-	for (cgltf_size i = 0; i < data->images_count; ++i) 
-	{
-		data->memory_free(data->memory_user_data, data->images[i].name);
-		data->memory_free(data->memory_user_data, data->images[i].uri);
-		data->memory_free(data->memory_user_data, data->images[i].mime_type);
-	}
-
-	data->memory_free(data->memory_user_data, data->images);
-
-	for (cgltf_size i = 0; i < data->textures_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->textures[i].name);
-	}
-
-	data->memory_free(data->memory_user_data, data->textures);
-
-	data->memory_free(data->memory_user_data, data->samplers);
-
-	for (cgltf_size i = 0; i < data->skins_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->skins[i].name);
-		data->memory_free(data->memory_user_data, data->skins[i].joints);
-	}
-
-	data->memory_free(data->memory_user_data, data->skins);
-
-	for (cgltf_size i = 0; i < data->cameras_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->cameras[i].name);
-	}
-
-	data->memory_free(data->memory_user_data, data->cameras);
-
-	for (cgltf_size i = 0; i < data->lights_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->lights[i].name);
-	}
-
-	data->memory_free(data->memory_user_data, data->lights);
-
-	for (cgltf_size i = 0; i < data->nodes_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->nodes[i].name);
-		data->memory_free(data->memory_user_data, data->nodes[i].children);
-		data->memory_free(data->memory_user_data, data->nodes[i].weights);
-	}
-
-	data->memory_free(data->memory_user_data, data->nodes);
-
-	for (cgltf_size i = 0; i < data->scenes_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->scenes[i].name);
-		data->memory_free(data->memory_user_data, data->scenes[i].nodes);
-	}
-
-	data->memory_free(data->memory_user_data, data->scenes);
-
-	for (cgltf_size i = 0; i < data->animations_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->animations[i].name);
-		data->memory_free(data->memory_user_data, data->animations[i].samplers);
-		data->memory_free(data->memory_user_data, data->animations[i].channels);
-	}
-
-	data->memory_free(data->memory_user_data, data->animations);
-
-	for (cgltf_size i = 0; i < data->extensions_used_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->extensions_used[i]);
-	}
-
-	data->memory_free(data->memory_user_data, data->extensions_used);
-
-	for (cgltf_size i = 0; i < data->extensions_required_count; ++i)
-	{
-		data->memory_free(data->memory_user_data, data->extensions_required[i]);
-	}
-
-	data->memory_free(data->memory_user_data, data->extensions_required);
-
-	data->memory_free(data->memory_user_data, data->file_data);
-
-	data->memory_free(data->memory_user_data, data);
-}
-
-void cgltf_node_transform_local(const cgltf_node* node, cgltf_float* out_matrix)
-{
-	cgltf_float* lm = out_matrix;
-
-	if (node->has_matrix)
-	{
-		memcpy(lm, node->matrix, sizeof(float) * 16);
-	}
-	else
-	{
-		float tx = node->translation[0];
-		float ty = node->translation[1];
-		float tz = node->translation[2];
-
-		float qx = node->rotation[0];
-		float qy = node->rotation[1];
-		float qz = node->rotation[2];
-		float qw = node->rotation[3];
-
-		float sx = node->scale[0];
-		float sy = node->scale[1];
-		float sz = node->scale[2];
-
-		lm[0] = (1 - 2 * qy*qy - 2 * qz*qz) * sx;
-		lm[1] = (2 * qx*qy + 2 * qz*qw) * sx;
-		lm[2] = (2 * qx*qz - 2 * qy*qw) * sx;
-		lm[3] = 0.f;
-
-		lm[4] = (2 * qx*qy - 2 * qz*qw) * sy;
-		lm[5] = (1 - 2 * qx*qx - 2 * qz*qz) * sy;
-		lm[6] = (2 * qy*qz + 2 * qx*qw) * sy;
-		lm[7] = 0.f;
-
-		lm[8] = (2 * qx*qz + 2 * qy*qw) * sz;
-		lm[9] = (2 * qy*qz - 2 * qx*qw) * sz;
-		lm[10] = (1 - 2 * qx*qx - 2 * qy*qy) * sz;
-		lm[11] = 0.f;
-
-		lm[12] = tx;
-		lm[13] = ty;
-		lm[14] = tz;
-		lm[15] = 1.f;
-	}
-}
-
-void cgltf_node_transform_world(const cgltf_node* node, cgltf_float* out_matrix)
-{
-	cgltf_float* lm = out_matrix;
-	cgltf_node_transform_local(node, lm);
-
-	const cgltf_node* parent = node->parent;
-
-	while (parent)
-	{
-		float pm[16];
-		cgltf_node_transform_local(parent, pm);
-
-		for (int i = 0; i < 4; ++i)
-		{
-			float l0 = lm[i * 4 + 0];
-			float l1 = lm[i * 4 + 1];
-			float l2 = lm[i * 4 + 2];
-
-			float r0 = l0 * pm[0] + l1 * pm[4] + l2 * pm[8];
-			float r1 = l0 * pm[1] + l1 * pm[5] + l2 * pm[9];
-			float r2 = l0 * pm[2] + l1 * pm[6] + l2 * pm[10];
-
-			lm[i * 4 + 0] = r0;
-			lm[i * 4 + 1] = r1;
-			lm[i * 4 + 2] = r2;
-		}
-
-		lm[12] += pm[12];
-		lm[13] += pm[13];
-		lm[14] += pm[14];
-
-		parent = parent->parent;
-	}
-}
-
-static cgltf_size cgltf_component_read_index(const void* in, cgltf_component_type component_type)
-{
-	switch (component_type)
-	{
-		case cgltf_component_type_r_16:
-			return *((const int16_t*) in);
-		case cgltf_component_type_r_16u:
-			return *((const uint16_t*) in);
-		case cgltf_component_type_r_32u:
-			return *((const uint32_t*) in);
-		case cgltf_component_type_r_32f:
-			return (cgltf_size)*((const float*) in);
-		case cgltf_component_type_r_8:
-			return *((const int8_t*) in);
-		case cgltf_component_type_r_8u:
-			return *((const uint8_t*) in);
-		default:
-			return 0;
-	}
-}
-
-static cgltf_float cgltf_component_read_float(const void* in, cgltf_component_type component_type, cgltf_bool normalized)
-{
-	if (component_type == cgltf_component_type_r_32f)
-	{
-		return *((const float*) in);
-	}
-
-	if (normalized)
-	{
-		switch (component_type)
-		{
-			// note: glTF spec doesn't currently define normalized conversions for 32-bit integers
-			case cgltf_component_type_r_16:
-				return *((const int16_t*) in) / (cgltf_float)32767;
-			case cgltf_component_type_r_16u:
-				return *((const uint16_t*) in) / (cgltf_float)65535;
-			case cgltf_component_type_r_8:
-				return *((const int8_t*) in) / (cgltf_float)127;
-			case cgltf_component_type_r_8u:
-				return *((const uint8_t*) in) / (cgltf_float)255;
-			default:
-				return 0;
-		}
-	}
-
-	return (cgltf_float)cgltf_component_read_index(in, component_type);
-}
-
-static cgltf_size cgltf_component_size(cgltf_component_type component_type);
-
-static cgltf_bool cgltf_element_read_float(const uint8_t* element, cgltf_type type, cgltf_component_type component_type, cgltf_bool normalized, cgltf_float* out, cgltf_size element_size)
-{
-	cgltf_size num_components = cgltf_num_components(type);
-
-	if (element_size < num_components) {
-		return 0;
-	}
-
-	// There are three special cases for component extraction, see #data-alignment in the 2.0 spec.
-
-	cgltf_size component_size = cgltf_component_size(component_type);
-
-	if (type == cgltf_type_mat2 && component_size == 1)
-	{
-		out[0] = cgltf_component_read_float(element, component_type, normalized);
-		out[1] = cgltf_component_read_float(element + 1, component_type, normalized);
-		out[2] = cgltf_component_read_float(element + 4, component_type, normalized);
-		out[3] = cgltf_component_read_float(element + 5, component_type, normalized);
-		return 1;
-	}
-
-	if (type == cgltf_type_mat3 && component_size == 1)
-	{
-		out[0] = cgltf_component_read_float(element, component_type, normalized);
-		out[1] = cgltf_component_read_float(element + 1, component_type, normalized);
-		out[2] = cgltf_component_read_float(element + 2, component_type, normalized);
-		out[3] = cgltf_component_read_float(element + 4, component_type, normalized);
-		out[4] = cgltf_component_read_float(element + 5, component_type, normalized);
-		out[5] = cgltf_component_read_float(element + 6, component_type, normalized);
-		out[6] = cgltf_component_read_float(element + 8, component_type, normalized);
-		out[7] = cgltf_component_read_float(element + 9, component_type, normalized);
-		out[8] = cgltf_component_read_float(element + 10, component_type, normalized);
-		return 1;
-	}
-
-	if (type == cgltf_type_mat3 && component_size == 2)
-	{
-		out[0] = cgltf_component_read_float(element, component_type, normalized);
-		out[1] = cgltf_component_read_float(element + 2, component_type, normalized);
-		out[2] = cgltf_component_read_float(element + 4, component_type, normalized);
-		out[3] = cgltf_component_read_float(element + 8, component_type, normalized);
-		out[4] = cgltf_component_read_float(element + 10, component_type, normalized);
-		out[5] = cgltf_component_read_float(element + 12, component_type, normalized);
-		out[6] = cgltf_component_read_float(element + 16, component_type, normalized);
-		out[7] = cgltf_component_read_float(element + 18, component_type, normalized);
-		out[8] = cgltf_component_read_float(element + 20, component_type, normalized);
-		return 1;
-	}
-
-	for (cgltf_size i = 0; i < num_components; ++i)
-	{
-		out[i] = cgltf_component_read_float(element + component_size * i, component_type, normalized);
-	}
-	return 1;
-}
-
-cgltf_bool cgltf_accessor_read_float(const cgltf_accessor* accessor, cgltf_size index, cgltf_float* out, cgltf_size element_size)
-{
-	if (accessor->is_sparse)
-	{
-		return 0;
-	}
-	if (accessor->buffer_view == NULL)
-	{
-		memset(out, 0, element_size * sizeof(cgltf_float));
-		return 1;
-	}
-	cgltf_size offset = accessor->offset + accessor->buffer_view->offset;
-	const uint8_t* element = (const uint8_t*) accessor->buffer_view->buffer->data;
-	element += offset + accessor->stride * index;
-	return cgltf_element_read_float(element, accessor->type, accessor->component_type, accessor->normalized, out, element_size);
-}
-
-cgltf_size cgltf_accessor_unpack_floats(const cgltf_accessor* accessor, cgltf_float* out, cgltf_size float_count)
-{
-	cgltf_size floats_per_element = cgltf_num_components(accessor->type);
-	cgltf_size available_floats = accessor->count * floats_per_element;
-	if (out == NULL)
-	{
-		return available_floats;
-	}
-
-	float_count = available_floats < float_count ? available_floats : float_count;
-	cgltf_size element_count = float_count / floats_per_element;
-
-	// First pass: convert each element in the base accessor.
-	cgltf_float* dest = out;
-	cgltf_accessor dense = *accessor;
-	dense.is_sparse = 0;
-	for (cgltf_size index = 0; index < element_count; index++, dest += floats_per_element)
-	{
-		cgltf_accessor_read_float(&dense, index, dest, floats_per_element);
-	}
-
-	// Second pass: write out each element in the sparse accessor.
-	if (accessor->is_sparse)
-	{
-		const cgltf_accessor_sparse* sparse = &dense.sparse;
-		const uint8_t* index_data = (const uint8_t*) sparse->indices_buffer_view->buffer->data;
-		index_data += sparse->indices_byte_offset + sparse->indices_buffer_view->offset;
-		cgltf_size index_stride = cgltf_component_size(sparse->indices_component_type);
-		const uint8_t* reader_head = (const uint8_t*) sparse->values_buffer_view->buffer->data;
-		reader_head += sparse->values_byte_offset + sparse->values_buffer_view->offset;
-		for (cgltf_size reader_index = 0; reader_index < sparse->count; reader_index++, index_data += index_stride)
-		{
-			size_t writer_index = cgltf_component_read_index(index_data, sparse->indices_component_type);
-			float* writer_head = out + writer_index * floats_per_element;
-			cgltf_element_read_float(reader_head, dense.type, dense.component_type, dense.normalized, writer_head, floats_per_element);
-			reader_head += dense.stride;
-		}
-	}
-
-	return element_count * floats_per_element;
-}
-
-cgltf_size cgltf_accessor_read_index(const cgltf_accessor* accessor, cgltf_size index)
-{
-	if (accessor->buffer_view)
-	{
-		cgltf_size offset = accessor->offset + accessor->buffer_view->offset;
-		const uint8_t* element = (const uint8_t*) accessor->buffer_view->buffer->data;
-		element += offset + accessor->stride * index;
-		return cgltf_component_read_index(element, accessor->component_type);
-	}
-
-	return 0;
-}
-
-#define CGLTF_ERROR_JSON -1
-#define CGLTF_ERROR_NOMEM -2
-#define CGLTF_ERROR_LEGACY -3
-
-#define CGLTF_CHECK_TOKTYPE(tok_, type_) if ((tok_).type != (type_)) { return CGLTF_ERROR_JSON; }
-#define CGLTF_CHECK_KEY(tok_) if ((tok_).type != JSMN_STRING || (tok_).size == 0) { return CGLTF_ERROR_JSON; } /* checking size for 0 verifies that a value follows the key */
-
-#define CGLTF_PTRINDEX(type, idx) (type*)((cgltf_size)idx + 1)
-#define CGLTF_PTRFIXUP(var, data, size) if (var) { if ((cgltf_size)var > size) { return CGLTF_ERROR_JSON; } var = &data[(cgltf_size)var-1]; }
-#define CGLTF_PTRFIXUP_REQ(var, data, size) if (!var || (cgltf_size)var > size) { return CGLTF_ERROR_JSON; } var = &data[(cgltf_size)var-1];
-
-static int cgltf_json_strcmp(jsmntok_t const* tok, const uint8_t* json_chunk, const char* str)
-{
-	CGLTF_CHECK_TOKTYPE(*tok, JSMN_STRING);
-	size_t const str_len = strlen(str);
-	size_t const name_length = tok->end - tok->start;
-	return (str_len == name_length) ? strncmp((const char*)json_chunk + tok->start, str, str_len) : 128;
-}
-
-static int cgltf_json_to_int(jsmntok_t const* tok, const uint8_t* json_chunk)
-{
-	CGLTF_CHECK_TOKTYPE(*tok, JSMN_PRIMITIVE);
-	char tmp[128];
-	int size = (cgltf_size)(tok->end - tok->start) < sizeof(tmp) ? tok->end - tok->start : (int)(sizeof(tmp) - 1);
-	strncpy(tmp, (const char*)json_chunk + tok->start, size);
-	tmp[size] = 0;
-	return atoi(tmp);
-}
-
-static cgltf_float cgltf_json_to_float(jsmntok_t const* tok, const uint8_t* json_chunk)
-{
-	CGLTF_CHECK_TOKTYPE(*tok, JSMN_PRIMITIVE);
-	char tmp[128];
-	int size = (cgltf_size)(tok->end - tok->start) < sizeof(tmp) ? tok->end - tok->start : (int)(sizeof(tmp) - 1);
-	strncpy(tmp, (const char*)json_chunk + tok->start, size);
-	tmp[size] = 0;
-	return (cgltf_float)atof(tmp);
-}
-
-static cgltf_bool cgltf_json_to_bool(jsmntok_t const* tok, const uint8_t* json_chunk)
-{
-	int size = tok->end - tok->start;
-	return size == 4 && memcmp(json_chunk + tok->start, "true", 4) == 0;
-}
-
-static int cgltf_skip_json(jsmntok_t const* tokens, int i)
-{
-	int end = i + 1;
-
-	while (i < end)
-	{
-		switch (tokens[i].type)
-		{
-		case JSMN_OBJECT:
-			end += tokens[i].size * 2;
-			break;
-
-		case JSMN_ARRAY:
-			end += tokens[i].size;
-			break;
-
-		case JSMN_PRIMITIVE:
-		case JSMN_STRING:
-			break;
-
-		default:
-			return -1;
-		}
-
-		i++;
-	}
-
-	return i;
-}
-
-static void cgltf_fill_float_array(float* out_array, int size, float value)
-{
-	for (int j = 0; j < size; ++j)
-	{
-		out_array[j] = value;
-	}
-}
-
-static int cgltf_parse_json_float_array(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, float* out_array, int size)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_ARRAY);
-	if (tokens[i].size != size)
-	{
-		return CGLTF_ERROR_JSON;
-	}
-	++i;
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
-		out_array[j] = cgltf_json_to_float(tokens + i, json_chunk);
-		++i;
-	}
-	return i;
-}
-
-static int cgltf_parse_json_string(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, char** out_string)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_STRING);
-	if (*out_string)
-	{
-		return CGLTF_ERROR_JSON;
-	}
-	int size = tokens[i].end - tokens[i].start;
-	char* result = (char*)options->memory_alloc(options->memory_user_data, size + 1);
-	if (!result)
-	{
-		return CGLTF_ERROR_NOMEM;
-	}
-	strncpy(result, (const char*)json_chunk + tokens[i].start, size);
-	result[size] = 0;
-	*out_string = result;
-	return i + 1;
-}
-
-static int cgltf_parse_json_array(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, size_t element_size, void** out_array, cgltf_size* out_size)
-{
-	(void)json_chunk;
-	if (tokens[i].type != JSMN_ARRAY)
-	{
-		return tokens[i].type == JSMN_OBJECT ? CGLTF_ERROR_LEGACY : CGLTF_ERROR_JSON;
-	}
-	if (*out_array)
-	{
-		return CGLTF_ERROR_JSON;
-	}
-	int size = tokens[i].size;
-	void* result = cgltf_calloc(options, element_size, size);
-	if (!result)
-	{
-		return CGLTF_ERROR_NOMEM;
-	}
-	*out_array = result;
-	*out_size = size;
-	return i + 1;
-}
-
-static int cgltf_parse_json_string_array(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, char*** out_array, cgltf_size* out_size)
-{
-    CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_ARRAY);
-    i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(char*), (void**)out_array, out_size);
-    if (i < 0)
-    {
-        return i;
-    }
-
-    for (cgltf_size j = 0; j < *out_size; ++j)
-    {
-        i = cgltf_parse_json_string(options, tokens, i, json_chunk, j + (*out_array));
-        if (i < 0)
-        {
-            return i;
-        }
-    }
-    return i;
-}
-
-static void cgltf_parse_attribute_type(const char* name, cgltf_attribute_type* out_type, int* out_index)
-{
-	const char* us = strchr(name, '_');
-	size_t len = us ? (size_t)(us - name) : strlen(name);
-
-	if (len == 8 && strncmp(name, "POSITION", 8) == 0)
-	{
-		*out_type = cgltf_attribute_type_position;
-	}
-	else if (len == 6 && strncmp(name, "NORMAL", 6) == 0)
-	{
-		*out_type = cgltf_attribute_type_normal;
-	}
-	else if (len == 7 && strncmp(name, "TANGENT", 7) == 0)
-	{
-		*out_type = cgltf_attribute_type_tangent;
-	}
-	else if (len == 8 && strncmp(name, "TEXCOORD", 8) == 0)
-	{
-		*out_type = cgltf_attribute_type_texcoord;
-	}
-	else if (len == 5 && strncmp(name, "COLOR", 5) == 0)
-	{
-		*out_type = cgltf_attribute_type_color;
-	}
-	else if (len == 6 && strncmp(name, "JOINTS", 6) == 0)
-	{
-		*out_type = cgltf_attribute_type_joints;
-	}
-	else if (len == 7 && strncmp(name, "WEIGHTS", 7) == 0)
-	{
-		*out_type = cgltf_attribute_type_weights;
-	}
-	else
-	{
-		*out_type = cgltf_attribute_type_invalid;
-	}
-
-	if (us && *out_type != cgltf_attribute_type_invalid)
-	{
-		*out_index = atoi(us + 1);
-	}
-}
-
-static int cgltf_parse_json_attribute_list(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_attribute** out_attributes, cgltf_size* out_attributes_count)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	if (*out_attributes)
-	{
-		return CGLTF_ERROR_JSON;
-	}
-
-	*out_attributes_count = tokens[i].size;
-	*out_attributes = (cgltf_attribute*)cgltf_calloc(options, sizeof(cgltf_attribute), *out_attributes_count);
-	++i;
-
-	if (!*out_attributes)
-	{
-		return CGLTF_ERROR_NOMEM;
-	}
-
-	for (cgltf_size j = 0; j < *out_attributes_count; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		i = cgltf_parse_json_string(options, tokens, i, json_chunk, &(*out_attributes)[j].name);
-		if (i < 0)
-		{
-			return CGLTF_ERROR_JSON;
-		}
-
-		cgltf_parse_attribute_type((*out_attributes)[j].name, &(*out_attributes)[j].type, &(*out_attributes)[j].index);
-
-		(*out_attributes)[j].data = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
-		++i;
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_extras(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_extras* out_extras)
-{
-	(void)json_chunk;
-	out_extras->start_offset = tokens[i].start;
-	out_extras->end_offset = tokens[i].end;
-	i = cgltf_skip_json(tokens, i);
-	return i;
-}
-
-static int cgltf_parse_json_primitive(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_primitive* out_prim)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	out_prim->type = cgltf_primitive_type_triangles;
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "mode") == 0)
-		{
-			++i;
-			out_prim->type
-					= (cgltf_primitive_type)
-					cgltf_json_to_int(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "indices") == 0)
-		{
-			++i;
-			out_prim->indices = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "material") == 0)
-		{
-			++i;
-			out_prim->material = CGLTF_PTRINDEX(cgltf_material, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "attributes") == 0)
-		{
-			i = cgltf_parse_json_attribute_list(options, tokens, i + 1, json_chunk, &out_prim->attributes, &out_prim->attributes_count);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "targets") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_morph_target), (void**)&out_prim->targets, &out_prim->targets_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			for (cgltf_size k = 0; k < out_prim->targets_count; ++k)
-			{
-				i = cgltf_parse_json_attribute_list(options, tokens, i, json_chunk, &out_prim->targets[k].attributes, &out_prim->targets[k].attributes_count);
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_prim->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_mesh(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_mesh* out_mesh)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_mesh->name);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "primitives") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_primitive), (void**)&out_mesh->primitives, &out_mesh->primitives_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			for (cgltf_size prim_index = 0; prim_index < out_mesh->primitives_count; ++prim_index)
-			{
-				i = cgltf_parse_json_primitive(options, tokens, i, json_chunk, &out_mesh->primitives[prim_index]);
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "weights") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_float), (void**)&out_mesh->weights, &out_mesh->weights_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			i = cgltf_parse_json_float_array(tokens, i - 1, json_chunk, out_mesh->weights, (int)out_mesh->weights_count);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			++i;
-
-			out_mesh->extras.start_offset = tokens[i].start;
-			out_mesh->extras.end_offset = tokens[i].end;
-
-			if (tokens[i].type == JSMN_OBJECT)
-			{
-				int extras_size = tokens[i].size;
-				++i;
-
-				for (int k = 0; k < extras_size; ++k)
-				{
-					CGLTF_CHECK_KEY(tokens[i]);
-
-					if (cgltf_json_strcmp(tokens+i, json_chunk, "targetNames") == 0)
-					{
-						i = cgltf_parse_json_string_array(options, tokens, i + 1, json_chunk, &out_mesh->target_names, &out_mesh->target_names_count);
-					}
-					else
-					{
-						i = cgltf_skip_json(tokens, i+1);
-					}
-
-					if (i < 0)
-					{
-						return i;
-					}
-				}
-			}
-			else
-			{
-				i = cgltf_skip_json(tokens, i);
-			}
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_meshes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_mesh), (void**)&out_data->meshes, &out_data->meshes_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->meshes_count; ++j)
-	{
-		i = cgltf_parse_json_mesh(options, tokens, i, json_chunk, &out_data->meshes[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static cgltf_component_type cgltf_json_to_component_type(jsmntok_t const* tok, const uint8_t* json_chunk)
-{
-	int type = cgltf_json_to_int(tok, json_chunk);
-
-	switch (type)
-	{
-	case 5120:
-		return cgltf_component_type_r_8;
-	case 5121:
-		return cgltf_component_type_r_8u;
-	case 5122:
-		return cgltf_component_type_r_16;
-	case 5123:
-		return cgltf_component_type_r_16u;
-	case 5125:
-		return cgltf_component_type_r_32u;
-	case 5126:
-		return cgltf_component_type_r_32f;
-	default:
-		return cgltf_component_type_invalid;
-	}
-}
-
-static int cgltf_parse_json_accessor_sparse(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_accessor_sparse* out_sparse)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "count") == 0)
-		{
-			++i;
-			out_sparse->count = cgltf_json_to_int(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "indices") == 0)
-		{
-			++i;
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int indices_size = tokens[i].size;
-			++i;
-
-			for (int k = 0; k < indices_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
-				{
-					++i;
-					out_sparse->indices_buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
-				{
-					++i;
-					out_sparse->indices_byte_offset = cgltf_json_to_int(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "componentType") == 0)
-				{
-					++i;
-					out_sparse->indices_component_type = cgltf_json_to_component_type(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-				{
-					i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_sparse->indices_extras);
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "values") == 0)
-		{
-			++i;
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int values_size = tokens[i].size;
-			++i;
-
-			for (int k = 0; k < values_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
-				{
-					++i;
-					out_sparse->values_buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
-				{
-					++i;
-					out_sparse->values_byte_offset = cgltf_json_to_int(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-				{
-					i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_sparse->values_extras);
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_sparse->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_accessor(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_accessor* out_accessor)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
-		{
-			++i;
-			out_accessor->buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
-		{
-			++i;
-			out_accessor->offset =
-					cgltf_json_to_int(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "componentType") == 0)
-		{
-			++i;
-			out_accessor->component_type = cgltf_json_to_component_type(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "normalized") == 0)
-		{
-			++i;
-			out_accessor->normalized = cgltf_json_to_bool(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "count") == 0)
-		{
-			++i;
-			out_accessor->count =
-					cgltf_json_to_int(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "type") == 0)
-		{
-			++i;
-			if (cgltf_json_strcmp(tokens+i, json_chunk, "SCALAR") == 0)
-			{
-				out_accessor->type = cgltf_type_scalar;
-			}
-			else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC2") == 0)
-			{
-				out_accessor->type = cgltf_type_vec2;
-			}
-			else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC3") == 0)
-			{
-				out_accessor->type = cgltf_type_vec3;
-			}
-			else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC4") == 0)
-			{
-				out_accessor->type = cgltf_type_vec4;
-			}
-			else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT2") == 0)
-			{
-				out_accessor->type = cgltf_type_mat2;
-			}
-			else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT3") == 0)
-			{
-				out_accessor->type = cgltf_type_mat3;
-			}
-			else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT4") == 0)
-			{
-				out_accessor->type = cgltf_type_mat4;
-			}
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "min") == 0)
-		{
-			++i;
-			out_accessor->has_min = 1;
-			// note: we can't parse the precise number of elements since type may not have been computed yet
-			int min_size = tokens[i].size > 16 ? 16 : tokens[i].size;
-			i = cgltf_parse_json_float_array(tokens, i, json_chunk, out_accessor->min, min_size);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "max") == 0)
-		{
-			++i;
-			out_accessor->has_max = 1;
-			// note: we can't parse the precise number of elements since type may not have been computed yet
-			int max_size = tokens[i].size > 16 ? 16 : tokens[i].size;
-			i = cgltf_parse_json_float_array(tokens, i, json_chunk, out_accessor->max, max_size);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "sparse") == 0)
-		{
-			out_accessor->is_sparse = 1;
-			i = cgltf_parse_json_accessor_sparse(tokens, i + 1, json_chunk, &out_accessor->sparse);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_accessor->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_texture_transform(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture_transform* out_texture_transform)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens + i, json_chunk, "offset") == 0)
-		{
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_texture_transform->offset, 2);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "rotation") == 0)
-		{
-			++i;
-			out_texture_transform->rotation = cgltf_json_to_float(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "scale") == 0)
-		{
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_texture_transform->scale, 2);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "texCoord") == 0)
-		{
-			++i;
-			out_texture_transform->texcoord = cgltf_json_to_int(tokens + i, json_chunk);
-			++i;
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i + 1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_texture_view(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture_view* out_texture_view)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	out_texture_view->scale = 1.0f;
-	cgltf_fill_float_array(out_texture_view->transform.scale, 2, 1.0f);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens + i, json_chunk, "index") == 0)
-		{
-			++i;
-			out_texture_view->texture = CGLTF_PTRINDEX(cgltf_texture, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "texCoord") == 0)
-		{
-			++i;
-			out_texture_view->texcoord = cgltf_json_to_int(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "scale") == 0) 
-		{
-			++i;
-			out_texture_view->scale = cgltf_json_to_float(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "strength") == 0)
-		{
-			++i;
-			out_texture_view->scale = cgltf_json_to_float(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_texture_view->extras);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
-		{
-			++i;
-
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int extensions_size = tokens[i].size;
-			++i;
-
-			for (int k = 0; k < extensions_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_texture_transform") == 0)
-				{
-					out_texture_view->has_transform = 1;
-					i = cgltf_parse_json_texture_transform(tokens, i + 1, json_chunk, &out_texture_view->transform);
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i + 1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_pbr_metallic_roughness(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_pbr_metallic_roughness* out_pbr)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "metallicFactor") == 0)
-		{
-			++i;
-			out_pbr->metallic_factor = 
-				cgltf_json_to_float(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "roughnessFactor") == 0) 
-		{
-			++i;
-			out_pbr->roughness_factor =
-				cgltf_json_to_float(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "baseColorFactor") == 0)
-		{
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->base_color_factor, 4);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "baseColorTexture") == 0)
-		{
-			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
-				&out_pbr->base_color_texture);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "metallicRoughnessTexture") == 0)
-		{
-			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
-				&out_pbr->metallic_roughness_texture);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_pbr->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_pbr_specular_glossiness(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_pbr_specular_glossiness* out_pbr)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "diffuseFactor") == 0)
-		{
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->diffuse_factor, 4);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "specularFactor") == 0)
-		{
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->specular_factor, 3);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "glossinessFactor") == 0)
-		{
-			++i;
-			out_pbr->glossiness_factor = cgltf_json_to_float(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "diffuseTexture") == 0)
-		{
-			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk, &out_pbr->diffuse_texture);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "specularGlossinessTexture") == 0)
-		{
-			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk, &out_pbr->specular_glossiness_texture);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_image(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_image* out_image)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j) 
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens + i, json_chunk, "uri") == 0) 
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->uri);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
-		{
-			++i;
-			out_image->buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "mimeType") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->mime_type);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->name);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_image->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i + 1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_sampler(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_sampler* out_sampler)
-{
-	(void)options;
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	out_sampler->wrap_s = 10497;
-	out_sampler->wrap_t = 10497;
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens + i, json_chunk, "magFilter") == 0) 
-		{
-			++i;
-			out_sampler->mag_filter
-				= cgltf_json_to_int(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "minFilter") == 0)
-		{
-			++i;
-			out_sampler->min_filter
-				= cgltf_json_to_int(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "wrapS") == 0)
-		{
-			++i;
-			out_sampler->wrap_s
-				= cgltf_json_to_int(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "wrapT") == 0) 
-		{
-			++i;
-			out_sampler->wrap_t
-				= cgltf_json_to_int(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_sampler->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i + 1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-
-static int cgltf_parse_json_texture(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture* out_texture)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_texture->name);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "sampler") == 0)
-		{
-			++i;
-			out_texture->sampler = CGLTF_PTRINDEX(cgltf_sampler, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "source") == 0) 
-		{
-			++i;
-			out_texture->image = CGLTF_PTRINDEX(cgltf_image, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_texture->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i + 1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_material(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_material* out_material)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	cgltf_fill_float_array(out_material->pbr_metallic_roughness.base_color_factor, 4, 1.0f);
-	out_material->pbr_metallic_roughness.metallic_factor = 1.0f;
-	out_material->pbr_metallic_roughness.roughness_factor = 1.0f;
-
-	cgltf_fill_float_array(out_material->pbr_specular_glossiness.diffuse_factor, 4, 1.0f);
-	cgltf_fill_float_array(out_material->pbr_specular_glossiness.specular_factor, 3, 1.0f);
-	out_material->pbr_specular_glossiness.glossiness_factor = 1.0f;
-
-	out_material->alpha_cutoff = 0.5f;
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_material->name);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "pbrMetallicRoughness") == 0)
-		{
-			out_material->has_pbr_metallic_roughness = 1;
-			i = cgltf_parse_json_pbr_metallic_roughness(tokens, i + 1, json_chunk, &out_material->pbr_metallic_roughness);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "emissiveFactor") == 0)
-		{
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_material->emissive_factor, 3);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "normalTexture") == 0)
-		{
-			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
-				&out_material->normal_texture);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "occlusionTexture") == 0)
-		{
-			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
-				&out_material->occlusion_texture);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "emissiveTexture") == 0)
-		{
-			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
-				&out_material->emissive_texture);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "alphaMode") == 0)
-		{
-			++i;
-			if (cgltf_json_strcmp(tokens + i, json_chunk, "OPAQUE") == 0)
-			{
-				out_material->alpha_mode = cgltf_alpha_mode_opaque;
-			}
-			else if (cgltf_json_strcmp(tokens + i, json_chunk, "MASK") == 0)
-			{
-				out_material->alpha_mode = cgltf_alpha_mode_mask;
-			}
-			else if (cgltf_json_strcmp(tokens + i, json_chunk, "BLEND") == 0)
-			{
-				out_material->alpha_mode = cgltf_alpha_mode_blend;
-			}
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "alphaCutoff") == 0)
-		{
-			++i;
-			out_material->alpha_cutoff = cgltf_json_to_float(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "doubleSided") == 0)
-		{
-			++i;
-			out_material->double_sided =
-				cgltf_json_to_bool(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_material->extras);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
-		{
-			++i;
-
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int extensions_size = tokens[i].size;
-			++i;
-
-			for (int k = 0; k < extensions_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_pbrSpecularGlossiness") == 0)
-				{
-					out_material->has_pbr_specular_glossiness = 1;
-					i = cgltf_parse_json_pbr_specular_glossiness(tokens, i + 1, json_chunk, &out_material->pbr_specular_glossiness);
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_unlit") == 0)
-				{
-					out_material->unlit = 1;
-					i = cgltf_skip_json(tokens, i+1);
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_accessors(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_accessor), (void**)&out_data->accessors, &out_data->accessors_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->accessors_count; ++j)
-	{
-		i = cgltf_parse_json_accessor(tokens, i, json_chunk, &out_data->accessors[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_materials(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_material), (void**)&out_data->materials, &out_data->materials_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->materials_count; ++j)
-	{
-		i = cgltf_parse_json_material(options, tokens, i, json_chunk, &out_data->materials[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_images(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_image), (void**)&out_data->images, &out_data->images_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->images_count; ++j)
-	{
-		i = cgltf_parse_json_image(options, tokens, i, json_chunk, &out_data->images[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_textures(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_texture), (void**)&out_data->textures, &out_data->textures_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->textures_count; ++j)
-	{
-		i = cgltf_parse_json_texture(options, tokens, i, json_chunk, &out_data->textures[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_samplers(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_sampler), (void**)&out_data->samplers, &out_data->samplers_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->samplers_count; ++j)
-	{
-		i = cgltf_parse_json_sampler(options, tokens, i, json_chunk, &out_data->samplers[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_buffer_view(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_buffer_view* out_buffer_view)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "buffer") == 0)
-		{
-			++i;
-			out_buffer_view->buffer = CGLTF_PTRINDEX(cgltf_buffer, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
-		{
-			++i;
-			out_buffer_view->offset =
-					cgltf_json_to_int(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteLength") == 0)
-		{
-			++i;
-			out_buffer_view->size =
-					cgltf_json_to_int(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteStride") == 0)
-		{
-			++i;
-			out_buffer_view->stride =
-					cgltf_json_to_int(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "target") == 0)
-		{
-			++i;
-			int type = cgltf_json_to_int(tokens+i, json_chunk);
-			switch (type)
-			{
-			case 34962:
-				type = cgltf_buffer_view_type_vertices;
-				break;
-			case 34963:
-				type = cgltf_buffer_view_type_indices;
-				break;
-			default:
-				type = cgltf_buffer_view_type_invalid;
-				break;
-			}
-			out_buffer_view->type = (cgltf_buffer_view_type)type;
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_buffer_view->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_buffer_views(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_buffer_view), (void**)&out_data->buffer_views, &out_data->buffer_views_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->buffer_views_count; ++j)
-	{
-		i = cgltf_parse_json_buffer_view(tokens, i, json_chunk, &out_data->buffer_views[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_buffer(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_buffer* out_buffer)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "byteLength") == 0)
-		{
-			++i;
-			out_buffer->size =
-					cgltf_json_to_int(tokens+i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "uri") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_buffer->uri);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_buffer->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_buffers(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_buffer), (void**)&out_data->buffers, &out_data->buffers_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->buffers_count; ++j)
-	{
-		i = cgltf_parse_json_buffer(options, tokens, i, json_chunk, &out_data->buffers[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_skin(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_skin* out_skin)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_skin->name);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "joints") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_skin->joints, &out_skin->joints_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			for (cgltf_size k = 0; k < out_skin->joints_count; ++k)
-			{
-				out_skin->joints[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
-				++i;
-			}
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "skeleton") == 0)
-		{
-			++i;
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
-			out_skin->skeleton = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "inverseBindMatrices") == 0)
-		{
-			++i;
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
-			out_skin->inverse_bind_matrices = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_skin->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_skins(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_skin), (void**)&out_data->skins, &out_data->skins_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->skins_count; ++j)
-	{
-		i = cgltf_parse_json_skin(options, tokens, i, json_chunk, &out_data->skins[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_camera(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_camera* out_camera)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_camera->name);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "type") == 0)
-		{
-			++i;
-			if (cgltf_json_strcmp(tokens + i, json_chunk, "perspective") == 0)
-			{
-				out_camera->type = cgltf_camera_type_perspective;
-			}
-			else if (cgltf_json_strcmp(tokens + i, json_chunk, "orthographic") == 0)
-			{
-				out_camera->type = cgltf_camera_type_orthographic;
-			}
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "perspective") == 0)
-		{
-			++i;
-
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int data_size = tokens[i].size;
-			++i;
-
-			out_camera->type = cgltf_camera_type_perspective;
-
-			for (int k = 0; k < data_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "aspectRatio") == 0)
-				{
-					++i;
-					out_camera->data.perspective.aspect_ratio = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "yfov") == 0)
-				{
-					++i;
-					out_camera->data.perspective.yfov = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "zfar") == 0)
-				{
-					++i;
-					out_camera->data.perspective.zfar = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "znear") == 0)
-				{
-					++i;
-					out_camera->data.perspective.znear = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-				{
-					i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_camera->data.perspective.extras);
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "orthographic") == 0)
-		{
-			++i;
-
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int data_size = tokens[i].size;
-			++i;
-
-			out_camera->type = cgltf_camera_type_orthographic;
-
-			for (int k = 0; k < data_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "xmag") == 0)
-				{
-					++i;
-					out_camera->data.orthographic.xmag = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "ymag") == 0)
-				{
-					++i;
-					out_camera->data.orthographic.ymag = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "zfar") == 0)
-				{
-					++i;
-					out_camera->data.orthographic.zfar = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "znear") == 0)
-				{
-					++i;
-					out_camera->data.orthographic.znear = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-				{
-					i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_camera->data.orthographic.extras);
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_camera->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_cameras(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_camera), (void**)&out_data->cameras, &out_data->cameras_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->cameras_count; ++j)
-	{
-		i = cgltf_parse_json_camera(options, tokens, i, json_chunk, &out_data->cameras[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_light(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_light* out_light)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_light->name);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "color") == 0)
-		{
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_light->color, 3);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "intensity") == 0)
-		{
-			++i;
-			out_light->intensity = cgltf_json_to_float(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "type") == 0)
-		{
-			++i;
-			if (cgltf_json_strcmp(tokens + i, json_chunk, "directional") == 0)
-			{
-				out_light->type = cgltf_light_type_directional;
-			}
-			else if (cgltf_json_strcmp(tokens + i, json_chunk, "point") == 0)
-			{
-				out_light->type = cgltf_light_type_point;
-			}
-			else if (cgltf_json_strcmp(tokens + i, json_chunk, "spot") == 0)
-			{
-				out_light->type = cgltf_light_type_spot;
-			}
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "range") == 0)
-		{
-			++i;
-			out_light->range = cgltf_json_to_float(tokens + i, json_chunk);
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "spot") == 0)
-		{
-			++i;
-
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int data_size = tokens[i].size;
-			++i;
-
-			for (int k = 0; k < data_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "innerConeAngle") == 0)
-				{
-					++i;
-					out_light->spot_inner_cone_angle = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "outerConeAngle") == 0)
-				{
-					++i;
-					out_light->spot_outer_cone_angle = cgltf_json_to_float(tokens + i, json_chunk);
-					++i;
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_lights(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_light), (void**)&out_data->lights, &out_data->lights_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->lights_count; ++j)
-	{
-		i = cgltf_parse_json_light(options, tokens, i, json_chunk, &out_data->lights[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_node(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_node* out_node)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	out_node->rotation[3] = 1.0f;
-	out_node->scale[0] = 1.0f;
-	out_node->scale[1] = 1.0f;
-	out_node->scale[2] = 1.0f;
-	out_node->matrix[0] = 1.0f;
-	out_node->matrix[5] = 1.0f;
-	out_node->matrix[10] = 1.0f;
-	out_node->matrix[15] = 1.0f;
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_node->name);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "children") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_node->children, &out_node->children_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			for (cgltf_size k = 0; k < out_node->children_count; ++k)
-			{
-				out_node->children[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
-				++i;
-			}
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "mesh") == 0)
-		{
-			++i;
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
-			out_node->mesh = CGLTF_PTRINDEX(cgltf_mesh, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "skin") == 0)
-		{
-			++i;
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
-			out_node->skin = CGLTF_PTRINDEX(cgltf_skin, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "camera") == 0)
-		{
-			++i;
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
-			out_node->camera = CGLTF_PTRINDEX(cgltf_camera, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "translation") == 0)
-		{
-			out_node->has_translation = 1;
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->translation, 3);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "rotation") == 0)
-		{
-			out_node->has_rotation = 1;
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->rotation, 4);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "scale") == 0)
-		{
-			out_node->has_scale = 1;
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->scale, 3);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "matrix") == 0)
-		{
-			out_node->has_matrix = 1;
-			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->matrix, 16);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "weights") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_float), (void**)&out_node->weights, &out_node->weights_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			i = cgltf_parse_json_float_array(tokens, i - 1, json_chunk, out_node->weights, (int)out_node->weights_count);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_node->extras);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
-		{
-			++i;
-
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int extensions_size = tokens[i].size;
-			++i;
-
-			for (int k = 0; k < extensions_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_lights_punctual") == 0)
-				{
-					++i;
-
-					CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-					int data_size = tokens[i].size;
-					++i;
-
-					for (int m = 0; m < data_size; ++m)
-					{
-						CGLTF_CHECK_KEY(tokens[i]);
-
-						if (cgltf_json_strcmp(tokens + i, json_chunk, "light") == 0)
-						{
-							++i;
-							CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
-							out_node->light = CGLTF_PTRINDEX(cgltf_light, cgltf_json_to_int(tokens + i, json_chunk));
-							++i;
-						}
-						else
-						{
-							i = cgltf_skip_json(tokens, i + 1);
-						}
-
-						if (i < 0)
-						{
-							return i;
-						}
-					}
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_nodes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_node), (void**)&out_data->nodes, &out_data->nodes_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->nodes_count; ++j)
-	{
-		i = cgltf_parse_json_node(options, tokens, i, json_chunk, &out_data->nodes[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_scene(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_scene* out_scene)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_scene->name);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "nodes") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_scene->nodes, &out_scene->nodes_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			for (cgltf_size k = 0; k < out_scene->nodes_count; ++k)
-			{
-				out_scene->nodes[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
-				++i;
-			}
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_scene->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_scenes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_scene), (void**)&out_data->scenes, &out_data->scenes_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->scenes_count; ++j)
-	{
-		i = cgltf_parse_json_scene(options, tokens, i, json_chunk, &out_data->scenes[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_animation_sampler(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation_sampler* out_sampler)
-{
-	(void)options;
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "input") == 0)
-		{
-			++i;
-			out_sampler->input = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "output") == 0)
-		{
-			++i;
-			out_sampler->output = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "interpolation") == 0)
-		{
-			++i;
-			if (cgltf_json_strcmp(tokens + i, json_chunk, "LINEAR") == 0)
-			{
-				out_sampler->interpolation = cgltf_interpolation_type_linear;
-			}
-			else if (cgltf_json_strcmp(tokens + i, json_chunk, "STEP") == 0)
-			{
-				out_sampler->interpolation = cgltf_interpolation_type_step;
-			}
-			else if (cgltf_json_strcmp(tokens + i, json_chunk, "CUBICSPLINE") == 0)
-			{
-				out_sampler->interpolation = cgltf_interpolation_type_cubic_spline;
-			}
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_sampler->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_animation_channel(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation_channel* out_channel)
-{
-	(void)options;
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "sampler") == 0)
-		{
-			++i;
-			out_channel->sampler = CGLTF_PTRINDEX(cgltf_animation_sampler, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "target") == 0)
-		{
-			++i;
-
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int target_size = tokens[i].size;
-			++i;
-
-			for (int k = 0; k < target_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "node") == 0)
-				{
-					++i;
-					out_channel->target_node = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens+i, json_chunk, "path") == 0)
-				{
-					++i;
-					if (cgltf_json_strcmp(tokens+i, json_chunk, "translation") == 0)
-					{
-						out_channel->target_path = cgltf_animation_path_type_translation;
-					}
-					else if (cgltf_json_strcmp(tokens+i, json_chunk, "rotation") == 0)
-					{
-						out_channel->target_path = cgltf_animation_path_type_rotation;
-					}
-					else if (cgltf_json_strcmp(tokens+i, json_chunk, "scale") == 0)
-					{
-						out_channel->target_path = cgltf_animation_path_type_scale;
-					}
-					else if (cgltf_json_strcmp(tokens+i, json_chunk, "weights") == 0)
-					{
-						out_channel->target_path = cgltf_animation_path_type_weights;
-					}
-					++i;
-				}
-				else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-				{
-					i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_channel->extras);
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i+1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_animation(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation* out_animation)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_animation->name);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "samplers") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_animation_sampler), (void**)&out_animation->samplers, &out_animation->samplers_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			for (cgltf_size k = 0; k < out_animation->samplers_count; ++k)
-			{
-				i = cgltf_parse_json_animation_sampler(options, tokens, i, json_chunk, &out_animation->samplers[k]);
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "channels") == 0)
-		{
-			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_animation_channel), (void**)&out_animation->channels, &out_animation->channels_count);
-			if (i < 0)
-			{
-				return i;
-			}
-
-			for (cgltf_size k = 0; k < out_animation->channels_count; ++k)
-			{
-				i = cgltf_parse_json_animation_channel(options, tokens, i, json_chunk, &out_animation->channels[k]);
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_animation->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-static int cgltf_parse_json_animations(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_animation), (void**)&out_data->animations, &out_data->animations_count);
-	if (i < 0)
-	{
-		return i;
-	}
-
-	for (cgltf_size j = 0; j < out_data->animations_count; ++j)
-	{
-		i = cgltf_parse_json_animation(options, tokens, i, json_chunk, &out_data->animations[j]);
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-	return i;
-}
-
-static int cgltf_parse_json_asset(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_asset* out_asset)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens+i, json_chunk, "copyright") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->copyright);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "generator") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->generator);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "version") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->version);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "minVersion") == 0)
-		{
-			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->min_version);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_asset->extras);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i+1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	if (out_asset->version && atof(out_asset->version) < 2)
-	{
-		return CGLTF_ERROR_LEGACY;
-	}
-
-	return i;
-}
-
-cgltf_size cgltf_num_components(cgltf_type type) {
-	switch (type)
-	{
-	case cgltf_type_vec2:
-		return 2;
-	case cgltf_type_vec3:
-		return 3;
-	case cgltf_type_vec4:
-		return 4;
-	case cgltf_type_mat2:
-		return 4;
-	case cgltf_type_mat3:
-		return 9;
-	case cgltf_type_mat4:
-		return 16;
-	case cgltf_type_invalid:
-	case cgltf_type_scalar:
-	default:
-		return 1;
-	}
-}
-
-static cgltf_size cgltf_component_size(cgltf_component_type component_type) {
-	switch (component_type)
-	{
-	case cgltf_component_type_r_8:
-	case cgltf_component_type_r_8u:
-		return 1;
-	case cgltf_component_type_r_16:
-	case cgltf_component_type_r_16u:
-		return 2;
-	case cgltf_component_type_r_32u:
-	case cgltf_component_type_r_32f:
-		return 4;
-	case cgltf_component_type_invalid:
-	default:
-		return 0;
-	}
-}
-
-static cgltf_size cgltf_calc_size(cgltf_type type, cgltf_component_type component_type)
-{
-	cgltf_size component_size = cgltf_component_size(component_type);
-	if (type == cgltf_type_mat2 && component_size == 1)
-	{
-		return 8 * component_size;
-	}
-	else if (type == cgltf_type_mat3 && (component_size == 1 || component_size == 2))
-	{
-		return 12 * component_size;
-	}
-	return component_size * cgltf_num_components(type);
-}
-
-static int cgltf_fixup_pointers(cgltf_data* out_data);
-
-static int cgltf_parse_json_root(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
-{
-	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-	int size = tokens[i].size;
-	++i;
-
-	for (int j = 0; j < size; ++j)
-	{
-		CGLTF_CHECK_KEY(tokens[i]);
-
-		if (cgltf_json_strcmp(tokens + i, json_chunk, "asset") == 0)
-		{
-			i = cgltf_parse_json_asset(options, tokens, i + 1, json_chunk, &out_data->asset);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "meshes") == 0)
-		{
-			i = cgltf_parse_json_meshes(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "accessors") == 0)
-		{
-			i = cgltf_parse_json_accessors(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "bufferViews") == 0)
-		{
-			i = cgltf_parse_json_buffer_views(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "buffers") == 0)
-		{
-			i = cgltf_parse_json_buffers(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "materials") == 0)
-		{
-			i = cgltf_parse_json_materials(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "images") == 0)
-		{
-			i = cgltf_parse_json_images(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "textures") == 0)
-		{
-			i = cgltf_parse_json_textures(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "samplers") == 0)
-		{
-			i = cgltf_parse_json_samplers(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "skins") == 0)
-		{
-			i = cgltf_parse_json_skins(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "cameras") == 0)
-		{
-			i = cgltf_parse_json_cameras(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "nodes") == 0)
-		{
-			i = cgltf_parse_json_nodes(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "scenes") == 0)
-		{
-			i = cgltf_parse_json_scenes(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "scene") == 0)
-		{
-			++i;
-			out_data->scene = CGLTF_PTRINDEX(cgltf_scene, cgltf_json_to_int(tokens + i, json_chunk));
-			++i;
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "animations") == 0)
-		{
-			i = cgltf_parse_json_animations(options, tokens, i + 1, json_chunk, out_data);
-		}
-		else if (cgltf_json_strcmp(tokens+i, json_chunk, "extras") == 0)
-		{
-			i = cgltf_parse_json_extras(tokens, i + 1, json_chunk, &out_data->extras);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
-		{
-			++i;
-
-			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-			int extensions_size = tokens[i].size;
-			++i;
-
-			for (int k = 0; k < extensions_size; ++k)
-			{
-				CGLTF_CHECK_KEY(tokens[i]);
-
-				if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_lights_punctual") == 0)
-				{
-					++i;
-
-					CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
-
-					int data_size = tokens[i].size;
-					++i;
-
-					for (int m = 0; m < data_size; ++m)
-					{
-						CGLTF_CHECK_KEY(tokens[i]);
-
-						if (cgltf_json_strcmp(tokens + i, json_chunk, "lights") == 0)
-						{
-							i = cgltf_parse_json_lights(options, tokens, i + 1, json_chunk, out_data);
-						}
-						else
-						{
-							i = cgltf_skip_json(tokens, i + 1);
-						}
-
-						if (i < 0)
-						{
-							return i;
-						}
-					}
-				}
-				else
-				{
-					i = cgltf_skip_json(tokens, i + 1);
-				}
-
-				if (i < 0)
-				{
-					return i;
-				}
-			}
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensionsUsed") == 0)
-		{
-			i = cgltf_parse_json_string_array(options, tokens, i + 1, json_chunk, &out_data->extensions_used, &out_data->extensions_used_count);
-		}
-		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensionsRequired") == 0)
-		{
-			i = cgltf_parse_json_string_array(options, tokens, i + 1, json_chunk, &out_data->extensions_required, &out_data->extensions_required_count);
-		}
-		else
-		{
-			i = cgltf_skip_json(tokens, i + 1);
-		}
-
-		if (i < 0)
-		{
-			return i;
-		}
-	}
-
-	return i;
-}
-
-cgltf_result cgltf_parse_json(cgltf_options* options, const uint8_t* json_chunk, cgltf_size size, cgltf_data** out_data)
-{
-	jsmn_parser parser = { 0, 0, 0 };
-
-	if (options->json_token_count == 0)
-	{
-		int token_count = jsmn_parse(&parser, (const char*)json_chunk, size, NULL, 0);
-
-		if (token_count <= 0)
-		{
-			return cgltf_result_invalid_json;
-		}
-
-		options->json_token_count = token_count;
-	}
-
-	jsmntok_t* tokens = (jsmntok_t*)options->memory_alloc(options->memory_user_data, sizeof(jsmntok_t) * (options->json_token_count + 1));
-
-	if (!tokens)
-	{
-		return cgltf_result_out_of_memory;
-	}
-
-	jsmn_init(&parser);
-
-	int token_count = jsmn_parse(&parser, (const char*)json_chunk, size, tokens, options->json_token_count);
-
-	if (token_count <= 0)
-	{
-		options->memory_free(options->memory_user_data, tokens);
-		return cgltf_result_invalid_json;
-	}
-
-	// this makes sure that we always have an UNDEFINED token at the end of the stream
-	// for invalid JSON inputs this makes sure we don't perform out of bound reads of token data
-	tokens[token_count].type = JSMN_UNDEFINED;
-
-	cgltf_data* data = (cgltf_data*)options->memory_alloc(options->memory_user_data, sizeof(cgltf_data));
-
-	if (!data)
-	{
-		options->memory_free(options->memory_user_data, tokens);
-		return cgltf_result_out_of_memory;
-	}
-
-	memset(data, 0, sizeof(cgltf_data));
-	data->memory_free = options->memory_free;
-	data->memory_user_data = options->memory_user_data;
-
-	int i = cgltf_parse_json_root(options, tokens, 0, json_chunk, data);
-
-	options->memory_free(options->memory_user_data, tokens);
-
-	if (i < 0)
-	{
-		cgltf_free(data);
-
-		switch (i)
-		{
-		case CGLTF_ERROR_NOMEM: return cgltf_result_out_of_memory;
-		case CGLTF_ERROR_LEGACY: return cgltf_result_legacy_gltf;
-		default: return cgltf_result_invalid_gltf;
-		}
-	}
-
-	if (cgltf_fixup_pointers(data) < 0)
-	{
-		cgltf_free(data);
-		return cgltf_result_invalid_gltf;
-	}
-
-	data->json = (const char*)json_chunk;
-	data->json_size = size;
-
-	*out_data = data;
-
-	return cgltf_result_success;
-}
-
-static int cgltf_fixup_pointers(cgltf_data* data)
-{
-	for (cgltf_size i = 0; i < data->meshes_count; ++i)
-	{
-		for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
-		{
-			CGLTF_PTRFIXUP(data->meshes[i].primitives[j].indices, data->accessors, data->accessors_count);
-			CGLTF_PTRFIXUP(data->meshes[i].primitives[j].material, data->materials, data->materials_count);
-
-			for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
-			{
-				CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].attributes[k].data, data->accessors, data->accessors_count);
-			}
-
-			for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
-			{
-				for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
-				{
-					CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].targets[k].attributes[m].data, data->accessors, data->accessors_count);
-				}
-			}
-		}
-	}
-
-	for (cgltf_size i = 0; i < data->accessors_count; ++i)
-	{
-		CGLTF_PTRFIXUP(data->accessors[i].buffer_view, data->buffer_views, data->buffer_views_count);
-
-		if (data->accessors[i].is_sparse)
-		{
-			CGLTF_PTRFIXUP_REQ(data->accessors[i].sparse.indices_buffer_view, data->buffer_views, data->buffer_views_count);
-			CGLTF_PTRFIXUP_REQ(data->accessors[i].sparse.values_buffer_view, data->buffer_views, data->buffer_views_count);
-		}
-
-		if (data->accessors[i].buffer_view)
-		{
-			data->accessors[i].stride = data->accessors[i].buffer_view->stride;
-		}
-
-		if (data->accessors[i].stride == 0)
-		{
-			data->accessors[i].stride = cgltf_calc_size(data->accessors[i].type, data->accessors[i].component_type);
-		}
-	}
-
-	for (cgltf_size i = 0; i < data->textures_count; ++i)
-	{
-		CGLTF_PTRFIXUP(data->textures[i].image, data->images, data->images_count);
-		CGLTF_PTRFIXUP(data->textures[i].sampler, data->samplers, data->samplers_count);
-	}
-
-	for (cgltf_size i = 0; i < data->images_count; ++i)
-	{
-		CGLTF_PTRFIXUP(data->images[i].buffer_view, data->buffer_views, data->buffer_views_count);
-	}
-
-	for (cgltf_size i = 0; i < data->materials_count; ++i)
-	{
-		CGLTF_PTRFIXUP(data->materials[i].normal_texture.texture, data->textures, data->textures_count);
-		CGLTF_PTRFIXUP(data->materials[i].emissive_texture.texture, data->textures, data->textures_count);
-		CGLTF_PTRFIXUP(data->materials[i].occlusion_texture.texture, data->textures, data->textures_count);
-
-		CGLTF_PTRFIXUP(data->materials[i].pbr_metallic_roughness.base_color_texture.texture, data->textures, data->textures_count);
-		CGLTF_PTRFIXUP(data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture, data->textures, data->textures_count);
-
-		CGLTF_PTRFIXUP(data->materials[i].pbr_specular_glossiness.diffuse_texture.texture, data->textures, data->textures_count);
-		CGLTF_PTRFIXUP(data->materials[i].pbr_specular_glossiness.specular_glossiness_texture.texture, data->textures, data->textures_count);
-	}
-
-	for (cgltf_size i = 0; i < data->buffer_views_count; ++i)
-	{
-		CGLTF_PTRFIXUP_REQ(data->buffer_views[i].buffer, data->buffers, data->buffers_count);
-	}
-
-	for (cgltf_size i = 0; i < data->skins_count; ++i)
-	{
-		for (cgltf_size j = 0; j < data->skins[i].joints_count; ++j)
-		{
-			CGLTF_PTRFIXUP_REQ(data->skins[i].joints[j], data->nodes, data->nodes_count);
-		}
-
-		CGLTF_PTRFIXUP(data->skins[i].skeleton, data->nodes, data->nodes_count);
-		CGLTF_PTRFIXUP(data->skins[i].inverse_bind_matrices, data->accessors, data->accessors_count);
-	}
-
-	for (cgltf_size i = 0; i < data->nodes_count; ++i)
-	{
-		for (cgltf_size j = 0; j < data->nodes[i].children_count; ++j)
-		{
-			CGLTF_PTRFIXUP_REQ(data->nodes[i].children[j], data->nodes, data->nodes_count);
-
-			if (data->nodes[i].children[j]->parent)
-			{
-				return CGLTF_ERROR_JSON;
-			}
-
-			data->nodes[i].children[j]->parent = &data->nodes[i];
-		}
-
-		CGLTF_PTRFIXUP(data->nodes[i].mesh, data->meshes, data->meshes_count);
-		CGLTF_PTRFIXUP(data->nodes[i].skin, data->skins, data->skins_count);
-		CGLTF_PTRFIXUP(data->nodes[i].camera, data->cameras, data->cameras_count);
-		CGLTF_PTRFIXUP(data->nodes[i].light, data->lights, data->lights_count);
-	}
-
-	for (cgltf_size i = 0; i < data->scenes_count; ++i)
-	{
-		for (cgltf_size j = 0; j < data->scenes[i].nodes_count; ++j)
-		{
-			CGLTF_PTRFIXUP_REQ(data->scenes[i].nodes[j], data->nodes, data->nodes_count);
-
-			if (data->scenes[i].nodes[j]->parent)
-			{
-				return CGLTF_ERROR_JSON;
-			}
-		}
-	}
-
-	CGLTF_PTRFIXUP(data->scene, data->scenes, data->scenes_count);
-
-	for (cgltf_size i = 0; i < data->animations_count; ++i)
-	{
-		for (cgltf_size j = 0; j < data->animations[i].samplers_count; ++j)
-		{
-			CGLTF_PTRFIXUP_REQ(data->animations[i].samplers[j].input, data->accessors, data->accessors_count);
-			CGLTF_PTRFIXUP_REQ(data->animations[i].samplers[j].output, data->accessors, data->accessors_count);
-		}
-
-		for (cgltf_size j = 0; j < data->animations[i].channels_count; ++j)
-		{
-			CGLTF_PTRFIXUP_REQ(data->animations[i].channels[j].sampler, data->animations[i].samplers, data->animations[i].samplers_count);
-			CGLTF_PTRFIXUP(data->animations[i].channels[j].target_node, data->nodes, data->nodes_count);
-		}
-	}
-
-	return 0;
-}
-
-/*
- * -- jsmn.c start --
- * Source: https://github.com/zserge/jsmn
- * License: MIT
- *
- * Copyright (c) 2010 Serge A. Zaitsev
-
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
-
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
-
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/**
- * Allocates a fresh unused token from the token pull.
- */
-static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser,
-				   jsmntok_t *tokens, size_t num_tokens) {
-	jsmntok_t *tok;
-	if (parser->toknext >= num_tokens) {
-		return NULL;
-	}
-	tok = &tokens[parser->toknext++];
-	tok->start = tok->end = -1;
-	tok->size = 0;
-#ifdef JSMN_PARENT_LINKS
-	tok->parent = -1;
-#endif
-	return tok;
-}
-
-/**
- * Fills token type and boundaries.
- */
-static void jsmn_fill_token(jsmntok_t *token, jsmntype_t type,
-			    int start, int end) {
-	token->type = type;
-	token->start = start;
-	token->end = end;
-	token->size = 0;
-}
-
-/**
- * Fills next available token with JSON primitive.
- */
-static int jsmn_parse_primitive(jsmn_parser *parser, const char *js,
-				size_t len, jsmntok_t *tokens, size_t num_tokens) {
-	jsmntok_t *token;
-	int start;
-
-	start = parser->pos;
-
-	for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
-		switch (js[parser->pos]) {
-#ifndef JSMN_STRICT
-		/* In strict mode primitive must be followed by "," or "}" or "]" */
-		case ':':
-#endif
-		case '\t' : case '\r' : case '\n' : case ' ' :
-		case ','  : case ']'  : case '}' :
-			goto found;
-		}
-		if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
-			parser->pos = start;
-			return JSMN_ERROR_INVAL;
-		}
-	}
-#ifdef JSMN_STRICT
-	/* In strict mode primitive must be followed by a comma/object/array */
-	parser->pos = start;
-	return JSMN_ERROR_PART;
-#endif
-
-found:
-	if (tokens == NULL) {
-		parser->pos--;
-		return 0;
-	}
-	token = jsmn_alloc_token(parser, tokens, num_tokens);
-	if (token == NULL) {
-		parser->pos = start;
-		return JSMN_ERROR_NOMEM;
-	}
-	jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
-#ifdef JSMN_PARENT_LINKS
-	token->parent = parser->toksuper;
-#endif
-	parser->pos--;
-	return 0;
-}
-
-/**
- * Fills next token with JSON string.
- */
-static int jsmn_parse_string(jsmn_parser *parser, const char *js,
-			     size_t len, jsmntok_t *tokens, size_t num_tokens) {
-	jsmntok_t *token;
-
-	int start = parser->pos;
-
-	parser->pos++;
-
-	/* Skip starting quote */
-	for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
-		char c = js[parser->pos];
-
-		/* Quote: end of string */
-		if (c == '\"') {
-			if (tokens == NULL) {
-				return 0;
-			}
-			token = jsmn_alloc_token(parser, tokens, num_tokens);
-			if (token == NULL) {
-				parser->pos = start;
-				return JSMN_ERROR_NOMEM;
-			}
-			jsmn_fill_token(token, JSMN_STRING, start+1, parser->pos);
-#ifdef JSMN_PARENT_LINKS
-			token->parent = parser->toksuper;
-#endif
-			return 0;
-		}
-
-		/* Backslash: Quoted symbol expected */
-		if (c == '\\' && parser->pos + 1 < len) {
-			int i;
-			parser->pos++;
-			switch (js[parser->pos]) {
-			/* Allowed escaped symbols */
-			case '\"': case '/' : case '\\' : case 'b' :
-			case 'f' : case 'r' : case 'n'  : case 't' :
-				break;
-				/* Allows escaped symbol \uXXXX */
-			case 'u':
-				parser->pos++;
-				for(i = 0; i < 4 && parser->pos < len && js[parser->pos] != '\0'; i++) {
-					/* If it isn't a hex character we have an error */
-					if(!((js[parser->pos] >= 48 && js[parser->pos] <= 57) || /* 0-9 */
-					     (js[parser->pos] >= 65 && js[parser->pos] <= 70) || /* A-F */
-					     (js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
-						parser->pos = start;
-						return JSMN_ERROR_INVAL;
-					}
-					parser->pos++;
-				}
-				parser->pos--;
-				break;
-				/* Unexpected symbol */
-			default:
-				parser->pos = start;
-				return JSMN_ERROR_INVAL;
-			}
-		}
-	}
-	parser->pos = start;
-	return JSMN_ERROR_PART;
-}
-
-/**
- * Parse JSON string and fill tokens.
- */
-static int jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
-	       jsmntok_t *tokens, size_t num_tokens) {
-	int r;
-	int i;
-	jsmntok_t *token;
-	int count = parser->toknext;
-
-	for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
-		char c;
-		jsmntype_t type;
-
-		c = js[parser->pos];
-		switch (c) {
-		case '{': case '[':
-			count++;
-			if (tokens == NULL) {
-				break;
-			}
-			token = jsmn_alloc_token(parser, tokens, num_tokens);
-			if (token == NULL)
-				return JSMN_ERROR_NOMEM;
-			if (parser->toksuper != -1) {
-				tokens[parser->toksuper].size++;
-#ifdef JSMN_PARENT_LINKS
-				token->parent = parser->toksuper;
-#endif
-			}
-			token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
-			token->start = parser->pos;
-			parser->toksuper = parser->toknext - 1;
-			break;
-		case '}': case ']':
-			if (tokens == NULL)
-				break;
-			type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
-#ifdef JSMN_PARENT_LINKS
-			if (parser->toknext < 1) {
-				return JSMN_ERROR_INVAL;
-			}
-			token = &tokens[parser->toknext - 1];
-			for (;;) {
-				if (token->start != -1 && token->end == -1) {
-					if (token->type != type) {
-						return JSMN_ERROR_INVAL;
-					}
-					token->end = parser->pos + 1;
-					parser->toksuper = token->parent;
-					break;
-				}
-				if (token->parent == -1) {
-					if(token->type != type || parser->toksuper == -1) {
-						return JSMN_ERROR_INVAL;
-					}
-					break;
-				}
-				token = &tokens[token->parent];
-			}
-#else
-			for (i = parser->toknext - 1; i >= 0; i--) {
-				token = &tokens[i];
-				if (token->start != -1 && token->end == -1) {
-					if (token->type != type) {
-						return JSMN_ERROR_INVAL;
-					}
-					parser->toksuper = -1;
-					token->end = parser->pos + 1;
-					break;
-				}
-			}
-			/* Error if unmatched closing bracket */
-			if (i == -1) return JSMN_ERROR_INVAL;
-			for (; i >= 0; i--) {
-				token = &tokens[i];
-				if (token->start != -1 && token->end == -1) {
-					parser->toksuper = i;
-					break;
-				}
-			}
-#endif
-			break;
-		case '\"':
-			r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
-			if (r < 0) return r;
-			count++;
-			if (parser->toksuper != -1 && tokens != NULL)
-				tokens[parser->toksuper].size++;
-			break;
-		case '\t' : case '\r' : case '\n' : case ' ':
-			break;
-		case ':':
-			parser->toksuper = parser->toknext - 1;
-			break;
-		case ',':
-			if (tokens != NULL && parser->toksuper != -1 &&
-					tokens[parser->toksuper].type != JSMN_ARRAY &&
-					tokens[parser->toksuper].type != JSMN_OBJECT) {
-#ifdef JSMN_PARENT_LINKS
-				parser->toksuper = tokens[parser->toksuper].parent;
-#else
-				for (i = parser->toknext - 1; i >= 0; i--) {
-					if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT) {
-						if (tokens[i].start != -1 && tokens[i].end == -1) {
-							parser->toksuper = i;
-							break;
-						}
-					}
-				}
-#endif
-			}
-			break;
-#ifdef JSMN_STRICT
-			/* In strict mode primitives are: numbers and booleans */
-		case '-': case '0': case '1' : case '2': case '3' : case '4':
-		case '5': case '6': case '7' : case '8': case '9':
-		case 't': case 'f': case 'n' :
-			/* And they must not be keys of the object */
-			if (tokens != NULL && parser->toksuper != -1) {
-				jsmntok_t *t = &tokens[parser->toksuper];
-				if (t->type == JSMN_OBJECT ||
-						(t->type == JSMN_STRING && t->size != 0)) {
-					return JSMN_ERROR_INVAL;
-				}
-			}
-#else
-			/* In non-strict mode every unquoted value is a primitive */
-		default:
-#endif
-			r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
-			if (r < 0) return r;
-			count++;
-			if (parser->toksuper != -1 && tokens != NULL)
-				tokens[parser->toksuper].size++;
-			break;
-
-#ifdef JSMN_STRICT
-			/* Unexpected char in strict mode */
-		default:
-			return JSMN_ERROR_INVAL;
-#endif
-		}
-	}
-
-	if (tokens != NULL) {
-		for (i = parser->toknext - 1; i >= 0; i--) {
-			/* Unmatched opened object or array */
-			if (tokens[i].start != -1 && tokens[i].end == -1) {
-				return JSMN_ERROR_PART;
-			}
-		}
-	}
-
-	return count;
-}
-
-/**
- * Creates a new parser based over a given  buffer with an array of tokens
- * available.
- */
-static void jsmn_init(jsmn_parser *parser) {
-	parser->pos = 0;
-	parser->toknext = 0;
-	parser->toksuper = -1;
-}
-/*
- * -- jsmn.c end --
- */
-
-#endif /* #ifdef CGLTF_IMPLEMENTATION */
-
-/* cgltf is distributed under MIT license:
- *
- * Copyright (c) 2018 Johannes Kuhlmann
-
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
-
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
-
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */

3rdparty/meshoptimizer/tools/fast_obj.h

@@ -1,1397 +0,0 @@
-/*
- *
- * MIT License
- *
- * Copyright (c) 2018 Richard Knight
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- */
-
-#ifndef FAST_OBJ_HDR
-#define FAST_OBJ_HDR
-
-
-typedef struct
-{
-    /* Texture name from .mtl file */
-    char*                       name;
-
-    /* Resolved path to texture */
-    char*                       path;
-
-} fastObjTexture;
-
-
-typedef struct
-{
-    /* Material name */
-    char*                       name;
-
-    /* Parameters */
-    float                       Ka[3];  /* Ambient */
-    float                       Kd[3];  /* Diffuse */
-    float                       Ks[3];  /* Specular */
-    float                       Ke[3];  /* Emission */
-    float                       Kt[3];  /* Transmittance */
-    float                       Ns;     /* Shininess */
-    float                       Ni;     /* Index of refraction */
-    float                       Tf[3];  /* Transmission filter */
-    float                       d;      /* Disolve (alpha) */
-    int                         illum;  /* Illumination model */
-
-    /* Texture maps */
-    fastObjTexture              map_Ka;
-    fastObjTexture              map_Kd;
-    fastObjTexture              map_Ks;
-    fastObjTexture              map_Ke;
-    fastObjTexture              map_Kt;
-    fastObjTexture              map_Ns;
-    fastObjTexture              map_Ni;
-    fastObjTexture              map_d;
-    fastObjTexture              map_bump;
-    
-
-} fastObjMaterial;
-
-
-typedef struct
-{
-    unsigned int                p;
-    unsigned int                t;
-    unsigned int                n;
-
-} fastObjIndex;
-
-
-typedef struct
-{
-    /* Group name */
-    char*                       name;
-
-    /* Number of faces */
-    unsigned int                face_count;
-
-    /* First face in fastObjMesh face_* arrays */
-    unsigned int                face_offset;
-
-    /* First index in fastObjMesh indices array */
-    unsigned int                index_offset;
-
-} fastObjGroup;
-
-
-typedef struct
-{
-    /* Vertex data */
-    unsigned int                position_count;
-    float*                      positions;
-
-    unsigned int                texcoord_count;
-    float*                      texcoords;
-
-    unsigned int                normal_count;
-    float*                      normals;
-
-    /* Face data: one element for each face */
-    unsigned int                face_count;
-    unsigned int*               face_vertices;
-    unsigned int*               face_materials;
-
-    /* Index data: one element for each face vertex */
-    fastObjIndex*               indices;
-
-    /* Materials */
-    unsigned int                material_count;
-    fastObjMaterial*            materials;
-
-    /* Mesh groups */
-    unsigned int                group_count;
-    fastObjGroup*               groups;
-
-} fastObjMesh;
-
-
-fastObjMesh*                    fast_obj_read(const char* path);
-void                            fast_obj_destroy(fastObjMesh* mesh);
-
-#endif
-
-
-#ifdef FAST_OBJ_IMPLEMENTATION
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#ifndef FAST_OBJ_REALLOC
-#define FAST_OBJ_REALLOC        realloc
-#endif
-
-#ifndef FAST_OBJ_FREE
-#define FAST_OBJ_FREE           free
-#endif
-
-#ifdef _WIN32
-#define FAST_OBJ_SEPARATOR      '\\'
-#define FAST_OBJ_OTHER_SEP      '/'
-#else
-#define FAST_OBJ_SEPARATOR      '/'
-#define FAST_OBJ_OTHER_SEP      '\\'
-#endif
-
-
-/* Size of buffer to read into */
-#define BUFFER_SIZE             65536
-
-/* Max supported power when parsing float */
-#define MAX_POWER               20
-
-typedef struct
-{
-    /* Final mesh */
-    fastObjMesh*                mesh;
-
-    /* Current group */
-    fastObjGroup                group;
-
-    /* Current material index */
-    unsigned int                material;
-
-    /* Current line in file */
-    unsigned int                line;
-
-    /* Base path for materials/textures */
-    char*                       base;
-
-} fastObjData;
-
-
-static const
-double POWER_10_POS[MAX_POWER] =
-{
-    1.0e0,  1.0e1,  1.0e2,  1.0e3,  1.0e4,  1.0e5,  1.0e6,  1.0e7,  1.0e8,  1.0e9,
-    1.0e10, 1.0e11, 1.0e12, 1.0e13, 1.0e14, 1.0e15, 1.0e16, 1.0e17, 1.0e18, 1.0e19,
-};
-
-static const
-double POWER_10_NEG[MAX_POWER] =
-{
-    1.0e0,   1.0e-1,  1.0e-2,  1.0e-3,  1.0e-4,  1.0e-5,  1.0e-6,  1.0e-7,  1.0e-8,  1.0e-9,
-    1.0e-10, 1.0e-11, 1.0e-12, 1.0e-13, 1.0e-14, 1.0e-15, 1.0e-16, 1.0e-17, 1.0e-18, 1.0e-19,
-};
-
-
-static
-void* memory_realloc(void* ptr, size_t bytes)
-{
-    return FAST_OBJ_REALLOC(ptr, bytes);
-}
-
-
-static
-void memory_dealloc(void* ptr)
-{
-    FAST_OBJ_FREE(ptr);
-}
-
-
-#define array_clean(_arr)       ((_arr) ? memory_dealloc(_array_header(_arr)), 0 : 0)
-#define array_push(_arr, _val)  (_array_mgrow(_arr, 1) ? ((_arr)[_array_size(_arr)++] = (_val), _array_size(_arr) - 1) : 0)
-#define array_size(_arr)        ((_arr) ? _array_size(_arr) : 0)
-#define array_capacity(_arr)    ((_arr) ? _array_capacity(_arr) : 0)
-#define array_empty(_arr)       (array_size(_arr) == 0)
-
-#define _array_header(_arr)     ((unsigned int*)(_arr) - 2)
-#define _array_size(_arr)       (_array_header(_arr)[0])
-#define _array_capacity(_arr)   (_array_header(_arr)[1])
-#define _array_ngrow(_arr, _n)  ((_arr) == 0 || (_array_size(_arr) + (_n) >= _array_capacity(_arr)))
-#define _array_mgrow(_arr, _n)  (_array_ngrow(_arr, _n) ? (_array_grow(_arr, _n) != 0) : 1)
-#define _array_grow(_arr, _n)   (*((void**)&(_arr)) = array_realloc(_arr, _n, sizeof(*(_arr))))
-
-
-static
-void* array_realloc(void* ptr, unsigned int n, unsigned int b)
-{
-    unsigned int  sz   = array_size(ptr);
-    unsigned int  nsz  = sz + n;
-    unsigned int  cap  = array_capacity(ptr);
-    unsigned int  ncap = 3 * cap / 2;
-    unsigned int* r;
-
-
-    if (ncap < nsz)
-        ncap = nsz;
-    ncap = (ncap + 15) & ~15u;
-
-    r = (unsigned int*)(memory_realloc(ptr ? _array_header(ptr) : 0, b * ncap + 2 * sizeof(unsigned int)));
-    if (!r)
-        return 0;
-
-    r[0] = sz;
-    r[1] = ncap;
-
-    return (r + 2);
-}
-
-
-static
-void* file_open(const char* path)
-{
-    return fopen(path, "rb");
-}
-
-
-static
-void file_close(void* file)
-{
-    FILE* f;
-    
-    f = (FILE*)(file);
-    fclose(f);
-}
-
-
-static
-size_t file_read(void* file, void* dst, size_t bytes)
-{
-    FILE* f;
-    
-    f = (FILE*)(file);
-    return fread(dst, 1, bytes, f);
-}
-
-
-static
-unsigned long file_size(void* file)
-{
-    FILE* f;
-    long p;
-    long n;
-    
-    f = (FILE*)(file);
-
-    p = ftell(f);
-    fseek(f, 0, SEEK_END);
-    n = ftell(f);
-    fseek(f, p, SEEK_SET);
-
-    if (n > 0)
-        return (unsigned long)(n);
-    else
-        return 0;
-}
-
-
-static
-char* string_copy(const char* s, const char* e)
-{
-    size_t n;
-    char*  p;
-        
-    n = (size_t)(e - s);
-    p = (char*)(memory_realloc(0, n + 1));
-    if (p)
-    {
-        memcpy(p, s, n);
-        p[n] = '\0';
-    }
-
-    return p;
-}
-
-
-static
-char* string_substr(const char* s, size_t a, size_t b)
-{
-    return string_copy(s + a, s + b);
-}
-
-
-static
-char* string_concat(const char* a, const char* s, const char* e)
-{
-    size_t an;
-    size_t sn;
-    char*  p;
-        
-    an = a ? strlen(a) : 0;
-    sn = (size_t)(e - s);
-    p = (char*)(memory_realloc(0, an + sn + 1));
-    if (p)
-    {
-        if (a)
-            memcpy(p, a, an);
-        memcpy(p + an, s, sn);
-        p[an + sn] = '\0';
-    }
-
-    return p;
-}
-
-
-static
-int string_equal(const char* a, const char* s, const char* e)
-{
-    while (*a++ == *s++ && s != e)
-        ;
-
-    return (*a == '\0' && s == e);
-}
-
-
-static
-int string_find_last(const char* s, char c, size_t* p)
-{
-    const char* e;
-
-    e = s + strlen(s);
-    while (e > s)
-    {
-        e--;
-
-        if (*e == c)
-        {
-            *p = (size_t)(e - s);
-            return 1;
-        }
-    }
-
-    return 0;
-}
-
-
-static
-void string_fix_separators(char* s)
-{
-    while (*s)
-    {
-        if (*s == FAST_OBJ_OTHER_SEP)
-            *s = FAST_OBJ_SEPARATOR;
-        s++;
-    }
-}
-
-
-static
-int is_whitespace(char c)
-{
-    return (c == ' ' || c == '\t' || c == '\r');
-}
-
-
-static
-int is_newline(char c)
-{
-    return (c == '\n');
-}
-
-
-static
-int is_digit(char c)
-{
-    return (c >= '0' && c <= '9');
-}
-
-
-static
-int is_exponent(char c)
-{
-    return (c == 'e' || c == 'E');
-}
-
-
-static
-const char* skip_whitespace(const char* ptr)
-{
-    while (is_whitespace(*ptr))
-        ptr++;
-
-    return ptr;
-}
-
-
-static
-const char* skip_line(const char* ptr)
-{
-    while (!is_newline(*ptr++))
-        ;
-
-    return ptr;
-}
-
-
-static
-fastObjGroup group_default(void)
-{
-    fastObjGroup group;
-
-    group.name         = 0;
-    group.face_count   = 0;
-    group.face_offset  = 0;
-    group.index_offset = 0;
-
-    return group;
-}
-
-
-static
-void group_clean(fastObjGroup* group)
-{
-    memory_dealloc(group->name);
-}
-
-
-static
-void flush_output(fastObjData* data)
-{
-    /* Add group if not empty */
-    if (data->group.face_count > 0)
-        array_push(data->mesh->groups, data->group);
-    else
-        group_clean(&data->group);
-
-    /* Reset for more data */
-    data->group = group_default();
-    data->group.face_offset = array_size(data->mesh->face_vertices);
-    data->group.index_offset = array_size(data->mesh->indices);
-}
-
-
-static
-const char* parse_int(const char* ptr, int* val)
-{
-    int sign;
-    int num;
-
-
-    if (*ptr == '-')
-    {
-        sign = -1;
-        ptr++;
-    }
-    else
-    {
-        sign = +1;
-    }
-
-    num = 0;
-    while (is_digit(*ptr))
-        num = 10 * num + (*ptr++ - '0');
-
-    *val = sign * num;
-
-    return ptr;
-}
-
-
-static
-const char* parse_float(const char* ptr, float* val)
-{
-    double        sign;
-    double        num;
-    double        fra;
-    double        div;
-    int           eval;
-    const double* powers;
-
-
-    ptr = skip_whitespace(ptr);
-
-    switch (*ptr)
-    {
-    case '+':
-        sign = 1.0;
-        ptr++;
-        break;
-
-    case '-':
-        sign = -1.0;
-        ptr++;
-        break;
-
-    default:
-        sign = 1.0;
-        break;
-    }
-
-
-    num = 0.0;
-    while (is_digit(*ptr))
-        num = 10.0 * num + (double)(*ptr++ - '0');
-
-    if (*ptr == '.')
-        ptr++;
-
-    fra = 0.0;
-    div = 1.0;
-
-    while (is_digit(*ptr))
-    {
-        fra  = 10.0 * fra + (double)(*ptr++ - '0');
-        div *= 10.0;
-    }
-
-    num += fra / div;
-
-    if (is_exponent(*ptr))
-    {
-        ptr++;
-
-        switch (*ptr)
-        {
-        case '+':
-            powers = POWER_10_POS;
-            ptr++;
-            break;
-
-        case '-':
-            powers = POWER_10_NEG;
-            ptr++;
-            break;
-
-        default:
-            powers = POWER_10_POS;
-            break;
-        }
-
-        eval = 0;
-        while (is_digit(*ptr))
-            eval = 10 * eval + (*ptr++ - '0');
-
-        num *= (eval >= MAX_POWER) ? 0.0 : powers[eval];
-    }
-
-    *val = (float)(sign * num);
-
-    return ptr;
-}
-
-
-static
-const char* parse_vertex(fastObjData* data, const char* ptr)
-{
-    unsigned int ii;
-    float        v;
-
-
-    for (ii = 0; ii < 3; ii++)
-    {
-        ptr = parse_float(ptr, &v);
-        array_push(data->mesh->positions, v);
-    }
-
-    return ptr;
-}
-
-
-static
-const char* parse_texcoord(fastObjData* data, const char* ptr)
-{
-    unsigned int ii;
-    float        v;
-
-
-    for (ii = 0; ii < 2; ii++)
-    {
-        ptr = parse_float(ptr, &v);
-        array_push(data->mesh->texcoords, v);
-    }
-
-    return ptr;
-}
-
-
-static
-const char* parse_normal(fastObjData* data, const char* ptr)
-{
-    unsigned int ii;
-    float        v;
-
-
-    for (ii = 0; ii < 3; ii++)
-    {
-        ptr = parse_float(ptr, &v);
-        array_push(data->mesh->normals, v);
-    }
-
-    return ptr;
-}
-
-
-static
-const char* parse_face(fastObjData* data, const char* ptr)
-{
-    unsigned int count;
-    fastObjIndex vn;
-    int          v;
-    int          t;
-    int          n;
-
-
-    ptr = skip_whitespace(ptr);
-
-    count = 0;
-    while (!is_newline(*ptr))
-    {
-        v = 0;
-        t = 0;
-        n = 0;
-
-        ptr = parse_int(ptr, &v);
-        if (*ptr == '/')
-        {
-            ptr++;
-            if (*ptr != '/')
-                ptr = parse_int(ptr, &t);
-
-            if (*ptr == '/')
-            {
-                ptr++;
-                ptr = parse_int(ptr, &n);
-            }
-        }
-
-        if (v < 0)
-            vn.p = (array_size(data->mesh->positions) / 3) - (unsigned int)(-v);
-        else
-            vn.p = (unsigned int)(v);
-
-        if (t < 0)
-            vn.t = (array_size(data->mesh->texcoords) / 2) - (unsigned int)(-t);
-        else if (t > 0)
-            vn.t = (unsigned int)(t);
-        else
-            vn.t = 0;
-
-        if (n < 0)
-            vn.n = (array_size(data->mesh->normals) / 3) - (unsigned int)(-n);
-        else if (n > 0)
-            vn.n = (unsigned int)(n);
-        else
-            vn.n = 0;
-
-        array_push(data->mesh->indices, vn);
-        count++;
-
-        ptr = skip_whitespace(ptr);
-    }
-
-    array_push(data->mesh->face_vertices, count);
-    array_push(data->mesh->face_materials, data->material);
-
-    data->group.face_count++;
-
-    return ptr;
-}
-
-
-static
-const char* parse_group(fastObjData* data, const char* ptr)
-{
-    const char* s;
-    const char* e;
-
-
-    ptr = skip_whitespace(ptr);
-
-    s = ptr;
-    while (!is_whitespace(*ptr) && !is_newline(*ptr))
-        ptr++;
-
-    e = ptr;
-
-    flush_output(data);
-    data->group.name = string_copy(s, e);
-
-    return ptr;
-}
-
-
-static
-fastObjTexture map_default(void)
-{
-    fastObjTexture map;
-
-    map.name = 0;
-    map.path = 0;
-
-    return map;
-}
-
-
-static
-fastObjMaterial mtl_default(void)
-{
-    fastObjMaterial mtl;
-
-    mtl.name = 0;
-
-    mtl.Ka[0] = 0.0;
-    mtl.Ka[1] = 0.0;
-    mtl.Ka[2] = 0.0;
-    mtl.Kd[0] = 1.0;
-    mtl.Kd[1] = 1.0;
-    mtl.Kd[2] = 1.0;
-    mtl.Ks[0] = 0.0;
-    mtl.Ks[1] = 0.0;
-    mtl.Ks[2] = 0.0;
-    mtl.Ke[0] = 0.0;
-    mtl.Ke[1] = 0.0;
-    mtl.Ke[2] = 0.0;
-    mtl.Kt[0] = 0.0;
-    mtl.Kt[1] = 0.0;
-    mtl.Kt[2] = 0.0;
-    mtl.Ns    = 1.0;
-    mtl.Ni    = 1.0;
-    mtl.Tf[0] = 1.0;
-    mtl.Tf[1] = 1.0;
-    mtl.Tf[2] = 1.0;
-    mtl.d     = 1.0;
-    mtl.illum = 1;
-
-    mtl.map_Ka   = map_default();
-    mtl.map_Kd   = map_default();
-    mtl.map_Ks   = map_default();
-    mtl.map_Ke   = map_default();
-    mtl.map_Kt   = map_default();
-    mtl.map_Ns   = map_default();
-    mtl.map_Ni   = map_default();
-    mtl.map_d    = map_default();
-    mtl.map_bump = map_default();
-
-    return mtl;
-}
-
-
-static
-const char* parse_usemtl(fastObjData* data, const char* ptr)
-{
-    const char*      s;
-    const char*      e;
-    unsigned int     idx;
-    fastObjMaterial* mtl;
-
-
-    ptr = skip_whitespace(ptr);
-
-    /* Parse the material name */
-    s = ptr;
-    while (!is_whitespace(*ptr) && !is_newline(*ptr))
-        ptr++;
-
-    e = ptr;
-
-
-    /* If there are no materials yet, add a dummy invalid material at index 0 */
-    if (array_empty(data->mesh->materials))
-        array_push(data->mesh->materials, mtl_default());
-
-
-    /* Find an existing material with the same name */
-    idx = 0;
-    while (idx < array_size(data->mesh->materials))
-    {
-        mtl = &data->mesh->materials[idx];
-        if (mtl->name && string_equal(mtl->name, s, e))
-            break;
-
-        idx++;
-    }
-
-    if (idx == array_size(data->mesh->materials))
-        idx = 0;
-
-    data->material = idx;
-
-    return ptr;
-}
-
-
-static
-void map_clean(fastObjTexture* map)
-{
-    memory_dealloc(map->name);
-    memory_dealloc(map->path);
-}
-
-
-static
-void mtl_clean(fastObjMaterial* mtl)
-{
-    map_clean(&mtl->map_Ka);
-    map_clean(&mtl->map_Kd);
-    map_clean(&mtl->map_Ks);
-    map_clean(&mtl->map_Ke);
-    map_clean(&mtl->map_Kt);
-    map_clean(&mtl->map_Ns);
-    map_clean(&mtl->map_Ni);
-    map_clean(&mtl->map_d);
-    map_clean(&mtl->map_bump);
-
-    memory_dealloc(mtl->name);
-}
-
-
-static
-const char* read_mtl_int(const char* p, int* v)
-{
-    return parse_int(p, v);
-}
-
-
-static
-const char* read_mtl_single(const char* p, float* v)
-{
-    return parse_float(p, v);
-}
-
-
-static
-const char* read_mtl_triple(const char* p, float v[3])
-{
-    p = read_mtl_single(p, &v[0]);
-    p = read_mtl_single(p, &v[1]);
-    p = read_mtl_single(p, &v[2]);
-
-    return p;
-}
-
-
-static
-const char* read_map(fastObjData* data, const char* ptr, fastObjTexture* map)
-{
-    const char* s;
-    const char* e;
-    char*       name;
-    char*       path;
-
-    ptr = skip_whitespace(ptr);
-
-    /* Don't support options at present */
-    if (*ptr == '-')
-        return ptr;
-
-
-    /* Read name */
-    s = ptr;
-    while (!is_whitespace(*ptr) && !is_newline(*ptr))
-        ptr++;
-
-    e = ptr;
-
-    name = string_copy(s, e);
-
-    path = string_concat(data->base, s, e);
-    string_fix_separators(path);
-
-    map->name = name;
-    map->path = path;
-
-    return e;
-}
-
-
-static
-int read_mtllib(fastObjData* data, void* file)
-{
-    unsigned long   n;
-    const char*     s;
-    char*           contents;
-    size_t          l;
-    const char*     p;
-    const char*     e;
-    int             found_d;
-    fastObjMaterial mtl;
-
-
-    /* Read entire file */
-    n = file_size(file);
-
-    contents = (char*)(memory_realloc(0, n + 1));
-    if (!contents)
-        return 0;
-
-    l = file_read(file, contents, n);
-    contents[l] = '\n';
-
-    mtl = mtl_default();
-
-    found_d = 0;
-
-    p = contents;
-    e = contents + l;
-    while (p < e)
-    {
-        p = skip_whitespace(p);
-
-        switch (*p)
-        {
-        case 'n':
-            p++;
-            if (p[0] == 'e' &&
-                p[1] == 'w' &&
-                p[2] == 'm' &&
-                p[3] == 't' &&
-                p[4] == 'l' &&
-                is_whitespace(p[5]))
-            {
-                /* Push previous material (if there is one) */
-                if (mtl.name)
-                {
-                    array_push(data->mesh->materials, mtl);
-                    mtl = mtl_default();
-                }
-
-
-                /* Read name */
-                p += 5;
-
-                while (is_whitespace(*p))
-                    p++;
-
-                s = p;
-                while (!is_whitespace(*p) && !is_newline(*p))
-                    p++;
-
-                mtl.name = string_copy(s, p);
-            }
-            break;
-
-        case 'K':
-            if (p[1] == 'a')
-                p = read_mtl_triple(p + 2, mtl.Ka);
-            else if (p[1] == 'd')
-                p = read_mtl_triple(p + 2, mtl.Kd);
-            else if (p[1] == 's')
-                p = read_mtl_triple(p + 2, mtl.Ks);
-            else if (p[1] == 'e')
-                p = read_mtl_triple(p + 2, mtl.Ke);
-            else if (p[1] == 't')
-                p = read_mtl_triple(p + 2, mtl.Kt);
-            break;
-
-        case 'N':
-            if (p[1] == 's')
-                p = read_mtl_single(p + 2, &mtl.Ns);
-            else if (p[1] == 'i')
-                p = read_mtl_single(p + 2, &mtl.Ni);
-            break;
-
-        case 'T':
-            if (p[1] == 'r')
-            {
-                float Tr;
-                p = read_mtl_single(p + 2, &Tr);
-                if (!found_d)
-                {
-                    /* Ignore Tr if we've already read d */
-                    mtl.d = 1.0f - Tr;
-                }
-            }
-            else if (p[1] == 'f')
-                p = read_mtl_triple(p + 2, mtl.Tf);
-            break;
-
-        case 'd':
-            if (is_whitespace(p[1]))
-            {
-                p = read_mtl_single(p + 1, &mtl.d);
-                found_d = 1;
-            }
-            break;
-
-        case 'i':
-            p++;
-            if (p[0] == 'l' &&
-                p[1] == 'l' &&
-                p[2] == 'u' &&
-                p[3] == 'm' &&
-                is_whitespace(p[4]))
-            {
-                p = read_mtl_int(p + 4, &mtl.illum);
-            }
-            break;
-
-        case 'm':
-            p++;
-            if (p[0] == 'a' &&
-                p[1] == 'p' &&
-                p[2] == '_')
-            {
-                p += 3;
-                if (*p == 'K')
-                {
-                    p++;
-                    if (is_whitespace(p[1]))
-                    {
-                        if (*p == 'a')
-                            p = read_map(data, p + 1, &mtl.map_Ka);
-                        else if (*p == 'd')
-                            p = read_map(data, p + 1, &mtl.map_Kd);
-                        else if (*p == 's')
-                            p = read_map(data, p + 1, &mtl.map_Ks);
-                        else if (*p == 'e')
-                            p = read_map(data, p + 1, &mtl.map_Ke);
-                        else if (*p == 't')
-                            p = read_map(data, p + 1, &mtl.map_Kt);
-                    }
-                }
-                else if (*p == 'N')
-                {
-                    p++;
-                    if (is_whitespace(p[1]))
-                    {
-                        if (*p == 's')
-                            p = read_map(data, p + 1, &mtl.map_Ns);
-                        else if (*p == 'i')
-                            p = read_map(data, p + 1, &mtl.map_Ni);
-                    }
-                }
-                else if (*p == 'd')
-                {
-                    p++;
-                    if (is_whitespace(*p))
-                        p = read_map(data, p, &mtl.map_d);
-                }
-                else if (p[0] == 'b' &&
-                         p[1] == 'u' &&
-                         p[2] == 'm' &&
-                         p[3] == 'p' &&
-                         is_whitespace(p[4]))
-                {
-                    p = read_map(data, p + 4, &mtl.map_d);
-                }
-            }
-            break;
-
-        case '#':
-            break;
-        }
-
-        p = skip_line(p);
-    }
-
-    /* Push final material */
-    if (mtl.name)
-        array_push(data->mesh->materials, mtl);
-
-    memory_dealloc(contents);
-
-    return 1;
-}
-
-
-static
-const char* parse_mtllib(fastObjData* data, const char* ptr)
-{
-    const char* s;
-    const char* e;
-    char*       lib;
-    void*       file;
-
-
-    ptr = skip_whitespace(ptr);
-
-    s = ptr;
-    while (!is_whitespace(*ptr) && !is_newline(*ptr))
-        ptr++;
-
-    e = ptr;
-
-    lib = string_concat(data->base, s, e);
-    if (lib)
-    {
-        string_fix_separators(lib);
-
-        file = file_open(lib);
-        if (file)
-        {
-            read_mtllib(data, file);
-            file_close(file);
-        }
-
-        memory_dealloc(lib);
-    }
-
-    return ptr;
-}
-
-
-static
-void parse_buffer(fastObjData* data, const char* ptr, const char* end)
-{
-    const char* p;
-    
-    
-    p = ptr;
-    while (p != end)
-    {
-        p = skip_whitespace(p);
-
-        switch (*p)
-        {
-        case 'v':
-            p++;
-
-            switch (*p++)
-            {
-            case ' ':
-            case '\t':
-                p = parse_vertex(data, p);
-                break;
-
-            case 't':
-                p = parse_texcoord(data, p);
-                break;
-
-            case 'n':
-                p = parse_normal(data, p);
-                break;
-
-            default:
-                p--; /* roll p++ back in case *p was a newline */
-            }
-            break;
-
-        case 'f':
-            p++;
-
-            switch (*p++)
-            {
-            case ' ':
-            case '\t':
-                p = parse_face(data, p);
-                break;
-
-            default:
-                p--; /* roll p++ back in case *p was a newline */
-            }
-            break;
-
-        case 'g':
-            p++;
-
-            switch (*p++)
-            {
-            case ' ':
-            case '\t':
-                p = parse_group(data, p);
-                break;
-
-            default:
-                p--; /* roll p++ back in case *p was a newline */
-            }
-            break;
-
-        case 'm':
-            p++;
-            if (p[0] == 't' &&
-                p[1] == 'l' &&
-                p[2] == 'l' &&
-                p[3] == 'i' &&
-                p[4] == 'b' &&
-                is_whitespace(p[5]))
-                p = parse_mtllib(data, p + 5);
-            break;
-
-        case 'u':
-            p++;
-            if (p[0] == 's' &&
-                p[1] == 'e' &&
-                p[2] == 'm' &&
-                p[3] == 't' &&
-                p[4] == 'l' &&
-                is_whitespace(p[5]))
-                p = parse_usemtl(data, p + 5);
-            break;
-
-        case '#':
-            break;
-        }
-
-        p = skip_line(p);
-
-        data->line++;
-    }
-}
-
-
-void fast_obj_destroy(fastObjMesh* m)
-{
-    unsigned int ii;
-
-
-    for (ii = 0; ii < array_size(m->groups); ii++)
-        group_clean(&m->groups[ii]);
-
-    for (ii = 0; ii < array_size(m->materials); ii++)
-        mtl_clean(&m->materials[ii]);
-
-    array_clean(m->positions);
-    array_clean(m->texcoords);
-    array_clean(m->normals);
-    array_clean(m->face_vertices);
-    array_clean(m->face_materials);
-    array_clean(m->indices);
-    array_clean(m->groups);
-    array_clean(m->materials);
-
-    memory_dealloc(m);
-}
-
-
-fastObjMesh* fast_obj_read(const char* path)
-{
-    fastObjData  data;
-    fastObjMesh* m;
-    void*        file;
-    char*        buffer;
-    char*        start;
-    char*        end;
-    char*        last;
-    unsigned int read;
-    size_t       sep;
-    unsigned int bytes;
-
-
-    /* Open file */
-    file = file_open(path);
-    if (!file)
-        return 0;
-
-
-    /* Empty mesh */
-    m = (fastObjMesh*)(memory_realloc(0, sizeof(fastObjMesh)));
-    if (!m)
-        return 0;
-
-    m->positions      = 0;
-    m->texcoords      = 0;
-    m->normals        = 0;
-    m->face_vertices  = 0;
-    m->face_materials = 0;
-    m->indices        = 0;
-    m->materials      = 0;
-    m->groups         = 0;
-
-
-    /* Add dummy position/texcoord/normal */
-    array_push(m->positions, 0.0f);
-    array_push(m->positions, 0.0f);
-    array_push(m->positions, 0.0f);
-
-    array_push(m->texcoords, 0.0f);
-    array_push(m->texcoords, 0.0f);
-
-    array_push(m->normals, 0.0f);
-    array_push(m->normals, 0.0f);
-    array_push(m->normals, 1.0f);
-
-
-    /* Data needed during parsing */
-    data.mesh     = m;
-    data.group    = group_default();
-    data.material = 0;
-    data.line     = 1;
-    data.base     = 0;
-
-
-    /* Find base path for materials/textures */
-    if (string_find_last(path, FAST_OBJ_SEPARATOR, &sep))
-        data.base = string_substr(path, 0, sep + 1);
-
-
-    /* Create buffer for reading file */
-    buffer = (char*)(memory_realloc(0, 2 * BUFFER_SIZE * sizeof(char)));
-    if (!buffer)
-        return 0;
-
-    start = buffer;
-    for (;;)
-    {
-        /* Read another buffer's worth from file */
-        read = (unsigned int)(file_read(file, start, BUFFER_SIZE));
-        if (read == 0 && start == buffer)
-            break;
-
-
-        /* Ensure buffer ends in a newline */
-        if (read < BUFFER_SIZE)
-        {
-            if (read == 0 || start[read - 1] != '\n')
-                start[read++] = '\n';
-        }
-
-        end = start + read;
-        if (end == buffer)
-            break;
-
-
-        /* Find last new line */
-        last = end;
-        while (last > buffer)
-        {
-            last--;
-            if (*last == '\n')
-                break;
-        }
-
-
-        /* Check there actually is a new line */
-        if (*last != '\n')
-            break;
-
-        last++;
-
-
-        /* Process buffer */
-        parse_buffer(&data, buffer, last);
-
-
-        /* Copy overflow for next buffer */
-        bytes = (unsigned int)(end - last);
-        memcpy(buffer, last, bytes);
-        start = buffer + bytes;
-    }
-
-
-    /* Flush final group */
-    flush_output(&data);
-    group_clean(&data.group);
-
-    m->position_count = array_size(m->positions) / 3;
-    m->texcoord_count = array_size(m->texcoords) / 2;
-    m->normal_count   = array_size(m->normals) / 3;
-    m->face_count     = array_size(m->face_vertices);
-    m->material_count = array_size(m->materials);
-    m->group_count    = array_size(m->groups);
-
-
-    /* Clean up */
-    memory_dealloc(buffer);
-    memory_dealloc(data.base);
-
-    file_close(file);
-
-    return m;
-}
-
-#endif
-

3rdparty/meshoptimizer/tools/gltfpack.cpp

@@ -1,4609 +0,0 @@
-// gltfpack is part of meshoptimizer library; see meshoptimizer.h for version/license details
-//
-// gltfpack is a command-line tool that takes a glTF file as an input and can produce two types of files:
-// - regular glb/gltf files that use data that has been optimized for GPU consumption using various cache optimizers
-// and quantization
-// - packed glb/gltf files that additionally use meshoptimizer codecs to reduce the size of vertex/index data; these
-// files can be further compressed with deflate/etc.
-//
-// To load regular glb files, it should be sufficient to use a standard glTF loader (although note that these files
-// use quantized position/texture coordinates that require support for KHR_mesh_quantization; THREE.js and BabylonJS
-// support these files out of the box).
-// To load packed glb files, meshoptimizer vertex decoder needs to be integrated into the loader; demo/GLTFLoader.js
-// contains a work-in-progress loader - please note that the extension specification isn't ready yet so the format
-// will change!
-
-#ifndef _CRT_SECURE_NO_WARNINGS
-#define _CRT_SECURE_NO_WARNINGS
-#endif
-
-#ifndef _CRT_NONSTDC_NO_WARNINGS
-#define _CRT_NONSTDC_NO_WARNINGS
-#endif
-
-#include "../src/meshoptimizer.h"
-
-#include <algorithm>
-#include <string>
-#include <vector>
-
-#include <float.h>
-#include <limits.h>
-#include <math.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
-
-#ifdef _WIN32
-#include <io.h>
-#define popen _popen
-#define pclose _pclose
-#else
-#include <unistd.h>
-#endif
-
-#include "cgltf.h"
-#include "fast_obj.h"
-
-struct Attr
-{
-	float f[4];
-};
-
-struct Stream
-{
-	cgltf_attribute_type type;
-	int index;
-	int target; // 0 = base mesh, 1+ = morph target
-
-	std::vector<Attr> data;
-};
-
-struct Mesh
-{
-	cgltf_node* node;
-
-	cgltf_material* material;
-	cgltf_skin* skin;
-
-	cgltf_primitive_type type;
-
-	std::vector<Stream> streams;
-	std::vector<unsigned int> indices;
-
-	size_t targets;
-	std::vector<float> target_weights;
-	std::vector<const char*> target_names;
-};
-
-struct Track
-{
-	cgltf_node* node;
-	cgltf_animation_path_type path;
-
-	bool dummy;
-
-	size_t components; // 1 unless path is cgltf_animation_path_type_weights
-
-	cgltf_interpolation_type interpolation;
-
-	std::vector<float> time; // empty for resampled or constant animations
-	std::vector<Attr> data;
-};
-
-struct Animation
-{
-	const char* name;
-
-	float start;
-	int frames;
-
-	std::vector<Track> tracks;
-};
-
-struct Settings
-{
-	int pos_bits;
-	int tex_bits;
-	int nrm_bits;
-	bool nrm_unnormalized;
-
-	int anim_freq;
-	bool anim_const;
-
-	bool keep_named;
-
-	float simplify_threshold;
-	bool simplify_aggressive;
-
-	bool texture_embed;
-	bool texture_basis;
-	bool texture_ktx2;
-
-	int texture_quality;
-
-	bool compress;
-	bool fallback;
-
-	int verbose;
-};
-
-struct QuantizationParams
-{
-	float pos_offset[3];
-	float pos_scale;
-	int pos_bits;
-
-	float uv_offset[2];
-	float uv_scale[2];
-	int uv_bits;
-};
-
-struct StreamFormat
-{
-	cgltf_type type;
-	cgltf_component_type component_type;
-	bool normalized;
-	size_t stride;
-};
-
-struct NodeInfo
-{
-	bool keep;
-	bool animated;
-
-	unsigned int animated_paths;
-
-	int remap;
-	std::vector<size_t> meshes;
-};
-
-struct MaterialInfo
-{
-	bool keep;
-
-	int remap;
-};
-
-struct ImageInfo
-{
-	bool normal_map;
-	bool srgb;
-};
-
-struct ExtensionInfo
-{
-	const char* name;
-
-	bool used;
-	bool required;
-};
-
-struct BufferView
-{
-	enum Kind
-	{
-		Kind_Vertex,
-		Kind_Index,
-		Kind_Skin,
-		Kind_Time,
-		Kind_Keyframe,
-		Kind_Image,
-		Kind_Count
-	};
-
-	Kind kind;
-	int variant;
-	size_t stride;
-	bool compressed;
-
-	std::string data;
-
-	size_t bytes;
-};
-
-const char* getError(cgltf_result result, cgltf_data* data)
-{
-	switch (result)
-	{
-	case cgltf_result_file_not_found:
-		return data ? "resource not found" : "file not found";
-
-	case cgltf_result_io_error:
-		return "I/O error";
-
-	case cgltf_result_invalid_json:
-		return "invalid JSON";
-
-	case cgltf_result_invalid_gltf:
-		return "invalid GLTF";
-
-	case cgltf_result_out_of_memory:
-		return "out of memory";
-
-	case cgltf_result_legacy_gltf:
-		return "legacy GLTF";
-
-	case cgltf_result_data_too_short:
-		return data ? "buffer too short" : "not a GLTF file";
-
-	case cgltf_result_unknown_format:
-		return data ? "unknown resource format" : "not a GLTF file";
-
-	default:
-		return "unknown error";
-	}
-}
-
-cgltf_accessor* getAccessor(const cgltf_attribute* attributes, size_t attribute_count, cgltf_attribute_type type, int index = 0)
-{
-	for (size_t i = 0; i < attribute_count; ++i)
-		if (attributes[i].type == type && attributes[i].index == index)
-			return attributes[i].data;
-
-	return 0;
-}
-
-void readAccessor(std::vector<float>& data, const cgltf_accessor* accessor)
-{
-	assert(accessor->type == cgltf_type_scalar);
-
-	data.resize(accessor->count);
-	cgltf_accessor_unpack_floats(accessor, &data[0], data.size());
-}
-
-void readAccessor(std::vector<Attr>& data, const cgltf_accessor* accessor)
-{
-	size_t components = cgltf_num_components(accessor->type);
-
-	std::vector<float> temp(accessor->count * components);
-	cgltf_accessor_unpack_floats(accessor, &temp[0], temp.size());
-
-	data.resize(accessor->count);
-
-	for (size_t i = 0; i < accessor->count; ++i)
-	{
-		for (size_t k = 0; k < components && k < 4; ++k)
-			data[i].f[k] = temp[i * components + k];
-	}
-}
-
-void transformPosition(float* ptr, const float* transform)
-{
-	float x = ptr[0] * transform[0] + ptr[1] * transform[4] + ptr[2] * transform[8] + transform[12];
-	float y = ptr[0] * transform[1] + ptr[1] * transform[5] + ptr[2] * transform[9] + transform[13];
-	float z = ptr[0] * transform[2] + ptr[1] * transform[6] + ptr[2] * transform[10] + transform[14];
-
-	ptr[0] = x;
-	ptr[1] = y;
-	ptr[2] = z;
-}
-
-void transformNormal(float* ptr, const float* transform)
-{
-	float x = ptr[0] * transform[0] + ptr[1] * transform[4] + ptr[2] * transform[8];
-	float y = ptr[0] * transform[1] + ptr[1] * transform[5] + ptr[2] * transform[9];
-	float z = ptr[0] * transform[2] + ptr[1] * transform[6] + ptr[2] * transform[10];
-
-	float l = sqrtf(x * x + y * y + z * z);
-	float s = (l == 0.f) ? 0.f : 1 / l;
-
-	ptr[0] = x * s;
-	ptr[1] = y * s;
-	ptr[2] = z * s;
-}
-
-void transformMesh(Mesh& mesh, const cgltf_node* node)
-{
-	float transform[16];
-	cgltf_node_transform_world(node, transform);
-
-	for (size_t si = 0; si < mesh.streams.size(); ++si)
-	{
-		Stream& stream = mesh.streams[si];
-
-		if (stream.type == cgltf_attribute_type_position)
-		{
-			for (size_t i = 0; i < stream.data.size(); ++i)
-				transformPosition(stream.data[i].f, transform);
-		}
-		else if (stream.type == cgltf_attribute_type_normal || stream.type == cgltf_attribute_type_tangent)
-		{
-			for (size_t i = 0; i < stream.data.size(); ++i)
-				transformNormal(stream.data[i].f, transform);
-		}
-	}
-}
-
-void parseMeshes(cgltf_data* data, std::vector<Mesh>& meshes)
-{
-	for (size_t ni = 0; ni < data->nodes_count; ++ni)
-	{
-		cgltf_node& node = data->nodes[ni];
-
-		if (!node.mesh)
-			continue;
-
-		const cgltf_mesh& mesh = *node.mesh;
-		int mesh_id = int(&mesh - data->meshes);
-
-		for (size_t pi = 0; pi < mesh.primitives_count; ++pi)
-		{
-			const cgltf_primitive& primitive = mesh.primitives[pi];
-
-			if (primitive.type != cgltf_primitive_type_triangles && primitive.type != cgltf_primitive_type_points)
-			{
-				fprintf(stderr, "Warning: ignoring primitive %d of mesh %d because type %d is not supported\n", int(pi), mesh_id, primitive.type);
-				continue;
-			}
-
-			if (primitive.type == cgltf_primitive_type_points && primitive.indices)
-			{
-				fprintf(stderr, "Warning: ignoring primitive %d of mesh %d because indexed points are not supported\n", int(pi), mesh_id);
-				continue;
-			}
-
-			Mesh result = {};
-
-			result.node = &node;
-
-			result.material = primitive.material;
-			result.skin = node.skin;
-
-			result.type = primitive.type;
-
-			if (primitive.indices)
-			{
-				result.indices.resize(primitive.indices->count);
-				for (size_t i = 0; i < primitive.indices->count; ++i)
-					result.indices[i] = unsigned(cgltf_accessor_read_index(primitive.indices, i));
-			}
-			else if (primitive.type != cgltf_primitive_type_points)
-			{
-				size_t count = primitive.attributes ? primitive.attributes[0].data->count : 0;
-
-				// note, while we could generate a good index buffer, reindexMesh will take care of this
-				result.indices.resize(count);
-				for (size_t i = 0; i < count; ++i)
-					result.indices[i] = unsigned(i);
-			}
-
-			for (size_t ai = 0; ai < primitive.attributes_count; ++ai)
-			{
-				const cgltf_attribute& attr = primitive.attributes[ai];
-
-				if (attr.type == cgltf_attribute_type_invalid)
-				{
-					fprintf(stderr, "Warning: ignoring unknown attribute %s in primitive %d of mesh %d\n", attr.name, int(pi), mesh_id);
-					continue;
-				}
-
-				Stream s = {attr.type, attr.index};
-				readAccessor(s.data, attr.data);
-
-				if (attr.type == cgltf_attribute_type_color && attr.data->type == cgltf_type_vec3)
-				{
-					for (size_t i = 0; i < s.data.size(); ++i)
-						s.data[i].f[3] = 1.0f;
-				}
-
-				result.streams.push_back(s);
-			}
-
-			for (size_t ti = 0; ti < primitive.targets_count; ++ti)
-			{
-				const cgltf_morph_target& target = primitive.targets[ti];
-
-				for (size_t ai = 0; ai < target.attributes_count; ++ai)
-				{
-					const cgltf_attribute& attr = target.attributes[ai];
-
-					if (attr.type == cgltf_attribute_type_invalid)
-					{
-						fprintf(stderr, "Warning: ignoring unknown attribute %s in morph target %d of primitive %d of mesh %d\n", attr.name, int(ti), int(pi), mesh_id);
-						continue;
-					}
-
-					Stream s = {attr.type, attr.index, int(ti + 1)};
-					readAccessor(s.data, attr.data);
-
-					result.streams.push_back(s);
-				}
-			}
-
-			result.targets = primitive.targets_count;
-			result.target_weights.assign(mesh.weights, mesh.weights + mesh.weights_count);
-			result.target_names.assign(mesh.target_names, mesh.target_names + mesh.target_names_count);
-
-			meshes.push_back(result);
-		}
-	}
-}
-
-void defaultFree(void*, void* p)
-{
-	free(p);
-}
-
-int textureIndex(const std::vector<std::string>& textures, const char* name)
-{
-	for (size_t i = 0; i < textures.size(); ++i)
-		if (textures[i] == name)
-			return int(i);
-
-	return -1;
-}
-
-cgltf_data* parseSceneObj(fastObjMesh* obj)
-{
-	cgltf_data* data = (cgltf_data*)calloc(1, sizeof(cgltf_data));
-	data->memory_free = defaultFree;
-
-	std::vector<std::string> textures;
-
-	for (unsigned int mi = 0; mi < obj->material_count; ++mi)
-	{
-		fastObjMaterial& om = obj->materials[mi];
-
-		if (om.map_Kd.name && textureIndex(textures, om.map_Kd.name) < 0)
-			textures.push_back(om.map_Kd.name);
-	}
-
-	data->images = (cgltf_image*)calloc(textures.size(), sizeof(cgltf_image));
-	data->images_count = textures.size();
-
-	for (size_t i = 0; i < textures.size(); ++i)
-	{
-		data->images[i].uri = strdup(textures[i].c_str());
-	}
-
-	data->textures = (cgltf_texture*)calloc(textures.size(), sizeof(cgltf_texture));
-	data->textures_count = textures.size();
-
-	for (size_t i = 0; i < textures.size(); ++i)
-	{
-		data->textures[i].image = &data->images[i];
-	}
-
-	data->materials = (cgltf_material*)calloc(obj->material_count, sizeof(cgltf_material));
-	data->materials_count = obj->material_count;
-
-	for (unsigned int mi = 0; mi < obj->material_count; ++mi)
-	{
-		cgltf_material& gm = data->materials[mi];
-		fastObjMaterial& om = obj->materials[mi];
-
-		gm.has_pbr_metallic_roughness = true;
-		gm.pbr_metallic_roughness.base_color_factor[0] = 1.0f;
-		gm.pbr_metallic_roughness.base_color_factor[1] = 1.0f;
-		gm.pbr_metallic_roughness.base_color_factor[2] = 1.0f;
-		gm.pbr_metallic_roughness.base_color_factor[3] = 1.0f;
-		gm.pbr_metallic_roughness.metallic_factor = 0.0f;
-		gm.pbr_metallic_roughness.roughness_factor = 1.0f;
-
-		gm.alpha_cutoff = 0.5f;
-
-		if (om.map_Kd.name)
-		{
-			gm.pbr_metallic_roughness.base_color_texture.texture = &data->textures[textureIndex(textures, om.map_Kd.name)];
-			gm.pbr_metallic_roughness.base_color_texture.scale = 1.0f;
-
-			gm.alpha_mode = (om.illum == 4 || om.illum == 6 || om.illum == 7 || om.illum == 9) ? cgltf_alpha_mode_mask : cgltf_alpha_mode_opaque;
-		}
-
-		if (om.map_d.name)
-		{
-			gm.alpha_mode = cgltf_alpha_mode_blend;
-		}
-	}
-
-	return data;
-}
-
-void parseMeshesObj(fastObjMesh* obj, cgltf_data* data, std::vector<Mesh>& meshes)
-{
-	unsigned int material_count = std::max(obj->material_count, 1u);
-
-	std::vector<size_t> vertex_count(material_count);
-	std::vector<size_t> index_count(material_count);
-
-	for (unsigned int fi = 0; fi < obj->face_count; ++fi)
-	{
-		unsigned int mi = obj->face_materials[fi];
-
-		vertex_count[mi] += obj->face_vertices[fi];
-		index_count[mi] += (obj->face_vertices[fi] - 2) * 3;
-	}
-
-	std::vector<size_t> mesh_index(material_count);
-
-	for (unsigned int mi = 0; mi < material_count; ++mi)
-	{
-		if (index_count[mi] == 0)
-			continue;
-
-		mesh_index[mi] = meshes.size();
-
-		meshes.push_back(Mesh());
-
-		Mesh& mesh = meshes.back();
-
-		if (data->materials_count)
-		{
-			assert(mi < data->materials_count);
-			mesh.material = &data->materials[mi];
-		}
-
-		mesh.type = cgltf_primitive_type_triangles;
-
-		mesh.streams.resize(3);
-		mesh.streams[0].type = cgltf_attribute_type_position;
-		mesh.streams[0].data.resize(vertex_count[mi]);
-		mesh.streams[1].type = cgltf_attribute_type_normal;
-		mesh.streams[1].data.resize(vertex_count[mi]);
-		mesh.streams[2].type = cgltf_attribute_type_texcoord;
-		mesh.streams[2].data.resize(vertex_count[mi]);
-		mesh.indices.resize(index_count[mi]);
-		mesh.targets = 0;
-	}
-
-	std::vector<size_t> vertex_offset(material_count);
-	std::vector<size_t> index_offset(material_count);
-
-	size_t group_offset = 0;
-
-	for (unsigned int fi = 0; fi < obj->face_count; ++fi)
-	{
-		unsigned int mi = obj->face_materials[fi];
-		Mesh& mesh = meshes[mesh_index[mi]];
-
-		size_t vo = vertex_offset[mi];
-		size_t io = index_offset[mi];
-
-		for (unsigned int vi = 0; vi < obj->face_vertices[fi]; ++vi)
-		{
-			fastObjIndex ii = obj->indices[group_offset + vi];
-
-			Attr p = {{obj->positions[ii.p * 3 + 0], obj->positions[ii.p * 3 + 1], obj->positions[ii.p * 3 + 2]}};
-			Attr n = {{obj->normals[ii.n * 3 + 0], obj->normals[ii.n * 3 + 1], obj->normals[ii.n * 3 + 2]}};
-			Attr t = {{obj->texcoords[ii.t * 2 + 0], 1.f - obj->texcoords[ii.t * 2 + 1]}};
-
-			mesh.streams[0].data[vo + vi] = p;
-			mesh.streams[1].data[vo + vi] = n;
-			mesh.streams[2].data[vo + vi] = t;
-		}
-
-		for (unsigned int vi = 2; vi < obj->face_vertices[fi]; ++vi)
-		{
-			size_t to = io + (vi - 2) * 3;
-
-			mesh.indices[to + 0] = unsigned(vo);
-			mesh.indices[to + 1] = unsigned(vo + vi - 1);
-			mesh.indices[to + 2] = unsigned(vo + vi);
-		}
-
-		vertex_offset[mi] += obj->face_vertices[fi];
-		index_offset[mi] += (obj->face_vertices[fi] - 2) * 3;
-		group_offset += obj->face_vertices[fi];
-	}
-}
-
-void parseAnimations(cgltf_data* data, std::vector<Animation>& animations)
-{
-	for (size_t i = 0; i < data->animations_count; ++i)
-	{
-		const cgltf_animation& animation = data->animations[i];
-
-		Animation result = {};
-		result.name = animation.name;
-
-		for (size_t j = 0; j < animation.channels_count; ++j)
-		{
-			const cgltf_animation_channel& channel = animation.channels[j];
-
-			if (!channel.target_node)
-			{
-				fprintf(stderr, "Warning: ignoring channel %d of animation %d because it has no target node\n", int(j), int(i));
-				continue;
-			}
-
-			Track track = {};
-			track.node = channel.target_node;
-			track.path = channel.target_path;
-
-			track.components = (channel.target_path == cgltf_animation_path_type_weights) ? track.node->mesh->primitives[0].targets_count : 1;
-
-			track.interpolation = channel.sampler->interpolation;
-
-			readAccessor(track.time, channel.sampler->input);
-			readAccessor(track.data, channel.sampler->output);
-
-			result.tracks.push_back(track);
-		}
-
-		if (result.tracks.empty())
-		{
-			fprintf(stderr, "Warning: ignoring animation %d because it has no valid tracks\n", int(i));
-			continue;
-		}
-
-		animations.push_back(result);
-	}
-}
-
-bool areTextureViewsEqual(const cgltf_texture_view& lhs, const cgltf_texture_view& rhs)
-{
-	if (lhs.has_transform != rhs.has_transform)
-		return false;
-
-	if (lhs.has_transform)
-	{
-		const cgltf_texture_transform& lt = lhs.transform;
-		const cgltf_texture_transform& rt = rhs.transform;
-
-		if (memcmp(lt.offset, rt.offset, sizeof(cgltf_float) * 2) != 0)
-			return false;
-
-		if (lt.rotation != rt.rotation)
-			return false;
-
-		if (memcmp(lt.scale, rt.scale, sizeof(cgltf_float) * 2) != 0)
-			return false;
-
-		if (lt.texcoord != rt.texcoord)
-			return false;
-	}
-
-	if (lhs.texture != rhs.texture)
-		return false;
-
-	if (lhs.texcoord != rhs.texcoord)
-		return false;
-
-	if (lhs.scale != rhs.scale)
-		return false;
-
-	return true;
-}
-
-bool areMaterialsEqual(const cgltf_material& lhs, const cgltf_material& rhs)
-{
-	if (lhs.has_pbr_metallic_roughness != rhs.has_pbr_metallic_roughness)
-		return false;
-
-	if (lhs.has_pbr_metallic_roughness)
-	{
-		const cgltf_pbr_metallic_roughness& lpbr = lhs.pbr_metallic_roughness;
-		const cgltf_pbr_metallic_roughness& rpbr = rhs.pbr_metallic_roughness;
-
-		if (!areTextureViewsEqual(lpbr.base_color_texture, rpbr.base_color_texture))
-			return false;
-
-		if (!areTextureViewsEqual(lpbr.metallic_roughness_texture, rpbr.metallic_roughness_texture))
-			return false;
-
-		if (memcmp(lpbr.base_color_factor, rpbr.base_color_factor, sizeof(cgltf_float) * 4) != 0)
-			return false;
-
-		if (lpbr.metallic_factor != rpbr.metallic_factor)
-			return false;
-
-		if (lpbr.roughness_factor != rpbr.roughness_factor)
-			return false;
-	}
-
-	if (lhs.has_pbr_specular_glossiness != rhs.has_pbr_specular_glossiness)
-		return false;
-
-	if (lhs.has_pbr_specular_glossiness)
-	{
-		const cgltf_pbr_specular_glossiness& lpbr = lhs.pbr_specular_glossiness;
-		const cgltf_pbr_specular_glossiness& rpbr = rhs.pbr_specular_glossiness;
-
-		if (!areTextureViewsEqual(lpbr.diffuse_texture, rpbr.diffuse_texture))
-			return false;
-
-		if (!areTextureViewsEqual(lpbr.specular_glossiness_texture, rpbr.specular_glossiness_texture))
-			return false;
-
-		if (memcmp(lpbr.diffuse_factor, rpbr.diffuse_factor, sizeof(cgltf_float) * 4) != 0)
-			return false;
-
-		if (memcmp(lpbr.specular_factor, rpbr.specular_factor, sizeof(cgltf_float) * 3) != 0)
-			return false;
-
-		if (lpbr.glossiness_factor != rpbr.glossiness_factor)
-			return false;
-	}
-
-	if (!areTextureViewsEqual(lhs.normal_texture, rhs.normal_texture))
-		return false;
-
-	if (!areTextureViewsEqual(lhs.occlusion_texture, rhs.occlusion_texture))
-		return false;
-
-	if (!areTextureViewsEqual(lhs.emissive_texture, rhs.emissive_texture))
-		return false;
-
-	if (memcmp(lhs.emissive_factor, rhs.emissive_factor, sizeof(cgltf_float) * 3) != 0)
-		return false;
-
-	if (lhs.alpha_mode != rhs.alpha_mode)
-		return false;
-
-	if (lhs.alpha_cutoff != rhs.alpha_cutoff)
-		return false;
-
-	if (lhs.double_sided != rhs.double_sided)
-		return false;
-
-	if (lhs.unlit != rhs.unlit)
-		return false;
-
-	return true;
-}
-
-bool usesTextureSet(const cgltf_material& material, int set)
-{
-	if (material.has_pbr_metallic_roughness)
-	{
-		const cgltf_pbr_metallic_roughness& pbr = material.pbr_metallic_roughness;
-
-		if (pbr.base_color_texture.texture && pbr.base_color_texture.texcoord == set)
-			return true;
-
-		if (pbr.metallic_roughness_texture.texture && pbr.metallic_roughness_texture.texcoord == set)
-			return true;
-	}
-
-	if (material.has_pbr_specular_glossiness)
-	{
-		const cgltf_pbr_specular_glossiness& pbr = material.pbr_specular_glossiness;
-
-		if (pbr.diffuse_texture.texture && pbr.diffuse_texture.texcoord == set)
-			return true;
-
-		if (pbr.specular_glossiness_texture.texture && pbr.specular_glossiness_texture.texcoord == set)
-			return true;
-	}
-
-	if (material.normal_texture.texture && material.normal_texture.texcoord == set)
-		return true;
-
-	if (material.occlusion_texture.texture && material.occlusion_texture.texcoord == set)
-		return true;
-
-	if (material.emissive_texture.texture && material.emissive_texture.texcoord == set)
-		return true;
-
-	return false;
-}
-
-void mergeMeshMaterials(cgltf_data* data, std::vector<Mesh>& meshes)
-{
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		Mesh& mesh = meshes[i];
-
-		if (!mesh.material)
-			continue;
-
-		for (int j = 0; j < mesh.material - data->materials; ++j)
-		{
-			if (areMaterialsEqual(*mesh.material, data->materials[j]))
-			{
-				mesh.material = &data->materials[j];
-				break;
-			}
-		}
-	}
-}
-
-bool compareMeshTargets(const Mesh& lhs, const Mesh& rhs)
-{
-	if (lhs.targets != rhs.targets)
-		return false;
-
-	if (lhs.target_weights.size() != rhs.target_weights.size())
-		return false;
-
-	for (size_t i = 0; i < lhs.target_weights.size(); ++i)
-		if (lhs.target_weights[i] != rhs.target_weights[i])
-			return false;
-
-	if (lhs.target_names.size() != rhs.target_names.size())
-		return false;
-
-	for (size_t i = 0; i < lhs.target_names.size(); ++i)
-		if (strcmp(lhs.target_names[i], rhs.target_names[i]) != 0)
-			return false;
-
-	return true;
-}
-
-bool canMergeMeshes(const Mesh& lhs, const Mesh& rhs, const Settings& settings)
-{
-	if (lhs.node != rhs.node)
-	{
-		if (!lhs.node || !rhs.node)
-			return false;
-
-		if (lhs.node->parent != rhs.node->parent)
-			return false;
-
-		bool lhs_transform = lhs.node->has_translation | lhs.node->has_rotation | lhs.node->has_scale | lhs.node->has_matrix | (!!lhs.node->weights);
-		bool rhs_transform = rhs.node->has_translation | rhs.node->has_rotation | rhs.node->has_scale | rhs.node->has_matrix | (!!rhs.node->weights);
-
-		if (lhs_transform || rhs_transform)
-			return false;
-
-		if (settings.keep_named)
-		{
-			if (lhs.node->name && *lhs.node->name)
-				return false;
-
-			if (rhs.node->name && *rhs.node->name)
-				return false;
-		}
-
-		// we can merge nodes that don't have transforms of their own and have the same parent
-		// this is helpful when instead of splitting mesh into primitives, DCCs split mesh into mesh nodes
-	}
-
-	if (lhs.material != rhs.material)
-		return false;
-
-	if (lhs.skin != rhs.skin)
-		return false;
-
-	if (lhs.type != rhs.type)
-		return false;
-
-	if (!compareMeshTargets(lhs, rhs))
-		return false;
-
-	if (lhs.indices.empty() != rhs.indices.empty())
-		return false;
-
-	if (lhs.streams.size() != rhs.streams.size())
-		return false;
-
-	for (size_t i = 0; i < lhs.streams.size(); ++i)
-		if (lhs.streams[i].type != rhs.streams[i].type || lhs.streams[i].index != rhs.streams[i].index || lhs.streams[i].target != rhs.streams[i].target)
-			return false;
-
-	return true;
-}
-
-void mergeMeshes(Mesh& target, const Mesh& mesh)
-{
-	assert(target.streams.size() == mesh.streams.size());
-
-	size_t vertex_offset = target.streams[0].data.size();
-	size_t index_offset = target.indices.size();
-
-	for (size_t i = 0; i < target.streams.size(); ++i)
-		target.streams[i].data.insert(target.streams[i].data.end(), mesh.streams[i].data.begin(), mesh.streams[i].data.end());
-
-	target.indices.resize(target.indices.size() + mesh.indices.size());
-
-	size_t index_count = mesh.indices.size();
-
-	for (size_t i = 0; i < index_count; ++i)
-		target.indices[index_offset + i] = unsigned(vertex_offset + mesh.indices[i]);
-}
-
-void mergeMeshes(std::vector<Mesh>& meshes, const Settings& settings)
-{
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		Mesh& target = meshes[i];
-
-		if (target.streams.empty())
-			continue;
-
-		size_t target_vertices = target.streams[0].data.size();
-		size_t target_indices = target.indices.size();
-
-		size_t last_merged = i;
-
-		for (size_t j = i + 1; j < meshes.size(); ++j)
-		{
-			Mesh& mesh = meshes[j];
-
-			if (!mesh.streams.empty() && canMergeMeshes(target, mesh, settings))
-			{
-				target_vertices += mesh.streams[0].data.size();
-				target_indices += mesh.indices.size();
-				last_merged = j;
-			}
-		}
-
-		for (size_t j = 0; j < target.streams.size(); ++j)
-			target.streams[j].data.reserve(target_vertices);
-
-		target.indices.reserve(target_indices);
-
-		for (size_t j = i + 1; j <= last_merged; ++j)
-		{
-			Mesh& mesh = meshes[j];
-
-			if (!mesh.streams.empty() && canMergeMeshes(target, mesh, settings))
-			{
-				mergeMeshes(target, mesh);
-
-				mesh.streams.clear();
-				mesh.indices.clear();
-			}
-		}
-
-		assert(target.streams[0].data.size() == target_vertices);
-		assert(target.indices.size() == target_indices);
-	}
-}
-
-void filterEmptyMeshes(std::vector<Mesh>& meshes)
-{
-	size_t write = 0;
-
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		Mesh& mesh = meshes[i];
-
-		if (mesh.streams.empty())
-			continue;
-
-		if (mesh.streams[0].data.empty())
-			continue;
-
-		if (mesh.type == cgltf_primitive_type_triangles && mesh.indices.empty())
-			continue;
-
-		// the following code is roughly equivalent to meshes[write] = std::move(mesh)
-		std::vector<Stream> streams;
-		streams.swap(mesh.streams);
-
-		std::vector<unsigned int> indices;
-		indices.swap(mesh.indices);
-
-		meshes[write] = mesh;
-		meshes[write].streams.swap(streams);
-		meshes[write].indices.swap(indices);
-
-		write++;
-	}
-
-	meshes.resize(write);
-}
-
-bool hasColorData(const std::vector<Attr>& data)
-{
-	const float threshold = 0.99f;
-
-	for (size_t i = 0; i < data.size(); ++i)
-	{
-		const Attr& a = data[i];
-
-		if (a.f[0] < threshold || a.f[1] < threshold || a.f[2] < threshold || a.f[3] < threshold)
-			return true;
-	}
-
-	return false;
-}
-
-void filterStreams(Mesh& mesh)
-{
-	size_t write = 0;
-
-	for (size_t i = 0; i < mesh.streams.size(); ++i)
-	{
-		Stream& stream = mesh.streams[i];
-
-		if (stream.type == cgltf_attribute_type_texcoord && (!mesh.material || !usesTextureSet(*mesh.material, stream.index)))
-			continue;
-
-		if (stream.type == cgltf_attribute_type_tangent && (!mesh.material || !mesh.material->normal_texture.texture))
-			continue;
-
-		if ((stream.type == cgltf_attribute_type_joints || stream.type == cgltf_attribute_type_weights) && !mesh.skin)
-			continue;
-
-		if (stream.type == cgltf_attribute_type_color && !hasColorData(stream.data))
-			continue;
-
-		// the following code is roughly equivalent to streams[write] = std::move(stream)
-		std::vector<Attr> data;
-		data.swap(stream.data);
-
-		mesh.streams[write] = stream;
-		mesh.streams[write].data.swap(data);
-
-		write++;
-	}
-
-	mesh.streams.resize(write);
-}
-
-void reindexMesh(Mesh& mesh)
-{
-	size_t total_vertices = mesh.streams[0].data.size();
-	size_t total_indices = mesh.indices.size();
-
-	std::vector<meshopt_Stream> streams;
-	for (size_t i = 0; i < mesh.streams.size(); ++i)
-	{
-		if (mesh.streams[i].target)
-			continue;
-
-		assert(mesh.streams[i].data.size() == total_vertices);
-
-		meshopt_Stream stream = {&mesh.streams[i].data[0], sizeof(Attr), sizeof(Attr)};
-		streams.push_back(stream);
-	}
-
-	std::vector<unsigned int> remap(total_vertices);
-	size_t unique_vertices = meshopt_generateVertexRemapMulti(&remap[0], &mesh.indices[0], total_indices, total_vertices, &streams[0], streams.size());
-	assert(unique_vertices <= total_vertices);
-
-	meshopt_remapIndexBuffer(&mesh.indices[0], &mesh.indices[0], total_indices, &remap[0]);
-
-	for (size_t i = 0; i < mesh.streams.size(); ++i)
-	{
-		assert(mesh.streams[i].data.size() == total_vertices);
-
-		meshopt_remapVertexBuffer(&mesh.streams[i].data[0], &mesh.streams[i].data[0], total_vertices, sizeof(Attr), &remap[0]);
-		mesh.streams[i].data.resize(unique_vertices);
-	}
-}
-
-void filterTriangles(Mesh& mesh)
-{
-	unsigned int* indices = &mesh.indices[0];
-	size_t total_indices = mesh.indices.size();
-
-	size_t write = 0;
-
-	for (size_t i = 0; i < total_indices; i += 3)
-	{
-		unsigned int a = indices[i + 0], b = indices[i + 1], c = indices[i + 2];
-
-		if (a != b && a != c && b != c)
-		{
-			indices[write + 0] = a;
-			indices[write + 1] = b;
-			indices[write + 2] = c;
-			write += 3;
-		}
-	}
-
-	mesh.indices.resize(write);
-}
-
-Stream* getStream(Mesh& mesh, cgltf_attribute_type type, int index = 0)
-{
-	for (size_t i = 0; i < mesh.streams.size(); ++i)
-		if (mesh.streams[i].type == type && mesh.streams[i].index == index)
-			return &mesh.streams[i];
-
-	return 0;
-}
-
-void simplifyMesh(Mesh& mesh, float threshold, bool aggressive)
-{
-	if (threshold >= 1)
-		return;
-
-	const Stream* positions = getStream(mesh, cgltf_attribute_type_position);
-	if (!positions)
-		return;
-
-	size_t vertex_count = mesh.streams[0].data.size();
-
-	size_t target_index_count = size_t(double(mesh.indices.size() / 3) * threshold) * 3;
-	float target_error = 1e-2f;
-
-	if (target_index_count < 1)
-		return;
-
-	std::vector<unsigned int> indices(mesh.indices.size());
-	indices.resize(meshopt_simplify(&indices[0], &mesh.indices[0], mesh.indices.size(), positions->data[0].f, vertex_count, sizeof(Attr), target_index_count, target_error));
-	mesh.indices.swap(indices);
-
-	// Note: if the simplifier got stuck, we can try to reindex without normals/tangents and retry
-	// For now we simply fall back to aggressive simplifier instead
-
-	// if the mesh is complex enough and the precise simplifier got "stuck", we'll try to simplify using the sloppy simplifier which is guaranteed to reach the target count
-	if (aggressive && target_index_count > 50 * 3 && mesh.indices.size() > target_index_count)
-	{
-		indices.resize(meshopt_simplifySloppy(&indices[0], &mesh.indices[0], mesh.indices.size(), positions->data[0].f, vertex_count, sizeof(Attr), target_index_count));
-		mesh.indices.swap(indices);
-	}
-}
-
-void optimizeMesh(Mesh& mesh)
-{
-	size_t vertex_count = mesh.streams[0].data.size();
-
-	meshopt_optimizeVertexCache(&mesh.indices[0], &mesh.indices[0], mesh.indices.size(), vertex_count);
-
-	std::vector<unsigned int> remap(vertex_count);
-	size_t unique_vertices = meshopt_optimizeVertexFetchRemap(&remap[0], &mesh.indices[0], mesh.indices.size(), vertex_count);
-	assert(unique_vertices <= vertex_count);
-
-	meshopt_remapIndexBuffer(&mesh.indices[0], &mesh.indices[0], mesh.indices.size(), &remap[0]);
-
-	for (size_t i = 0; i < mesh.streams.size(); ++i)
-	{
-		assert(mesh.streams[i].data.size() == vertex_count);
-
-		meshopt_remapVertexBuffer(&mesh.streams[i].data[0], &mesh.streams[i].data[0], vertex_count, sizeof(Attr), &remap[0]);
-		mesh.streams[i].data.resize(unique_vertices);
-	}
-}
-
-struct BoneInfluence
-{
-	float i;
-	float w;
-};
-
-struct BoneInfluenceIndexPredicate
-{
-	bool operator()(const BoneInfluence& lhs, const BoneInfluence& rhs) const
-	{
-		return lhs.i < rhs.i;
-	}
-};
-
-struct BoneInfluenceWeightPredicate
-{
-	bool operator()(const BoneInfluence& lhs, const BoneInfluence& rhs) const
-	{
-		return lhs.w > rhs.w;
-	}
-};
-
-void filterBones(Mesh& mesh)
-{
-	const int kMaxGroups = 8;
-
-	std::pair<Stream*, Stream*> groups[kMaxGroups];
-	int group_count = 0;
-
-	// gather all joint/weight groups; each group contains 4 bone influences
-	for (int i = 0; i < kMaxGroups; ++i)
-	{
-		Stream* jg = getStream(mesh, cgltf_attribute_type_joints, int(i));
-		Stream* wg = getStream(mesh, cgltf_attribute_type_weights, int(i));
-
-		if (!jg || !wg)
-			break;
-
-		groups[group_count++] = std::make_pair(jg, wg);
-	}
-
-	if (group_count == 0)
-		return;
-
-	// weights below cutoff can't be represented in quantized 8-bit storage
-	const float weight_cutoff = 0.5f / 255.f;
-
-	size_t vertex_count = mesh.streams[0].data.size();
-
-	BoneInfluence inf[kMaxGroups * 4] = {};
-
-	for (size_t i = 0; i < vertex_count; ++i)
-	{
-		int count = 0;
-
-		// gather all bone influences for this vertex
-		for (int j = 0; j < group_count; ++j)
-		{
-			const Attr& ja = groups[j].first->data[i];
-			const Attr& wa = groups[j].second->data[i];
-
-			for (int k = 0; k < 4; ++k)
-				if (wa.f[k] > weight_cutoff)
-				{
-					inf[count].i = ja.f[k];
-					inf[count].w = wa.f[k];
-					count++;
-				}
-		}
-
-		// pick top 4 influences - could use partial_sort but it is slower on small sets
-		std::sort(inf, inf + count, BoneInfluenceWeightPredicate());
-
-		// now sort top 4 influences by bone index - this improves compression ratio
-		std::sort(inf, inf + std::min(4, count), BoneInfluenceIndexPredicate());
-
-		// copy the top 4 influences back into stream 0 - we will remove other streams at the end
-		Attr& ja = groups[0].first->data[i];
-		Attr& wa = groups[0].second->data[i];
-
-		for (int k = 0; k < 4; ++k)
-		{
-			if (k < count)
-			{
-				ja.f[k] = inf[k].i;
-				wa.f[k] = inf[k].w;
-			}
-			else
-			{
-				ja.f[k] = 0.f;
-				wa.f[k] = 0.f;
-			}
-		}
-	}
-
-	// remove redundant weight/joint streams
-	for (size_t i = 0; i < mesh.streams.size();)
-	{
-		Stream& s = mesh.streams[i];
-
-		if ((s.type == cgltf_attribute_type_joints || s.type == cgltf_attribute_type_weights) && s.index > 0)
-			mesh.streams.erase(mesh.streams.begin() + i);
-		else
-			++i;
-	}
-}
-
-void simplifyPointMesh(Mesh& mesh, float threshold)
-{
-	if (threshold >= 1)
-		return;
-
-	const Stream* positions = getStream(mesh, cgltf_attribute_type_position);
-	if (!positions)
-		return;
-
-	size_t vertex_count = mesh.streams[0].data.size();
-
-	size_t target_vertex_count = size_t(double(vertex_count) * threshold);
-
-	if (target_vertex_count < 1)
-		return;
-
-	std::vector<unsigned int> indices(target_vertex_count);
-	indices.resize(meshopt_simplifyPoints(&indices[0], positions->data[0].f, vertex_count, sizeof(Attr), target_vertex_count));
-
-	std::vector<Attr> scratch(indices.size());
-
-	for (size_t i = 0; i < mesh.streams.size(); ++i)
-	{
-		std::vector<Attr>& data = mesh.streams[i].data;
-
-		assert(data.size() == vertex_count);
-
-		for (size_t j = 0; j < indices.size(); ++j)
-			scratch[j] = data[indices[j]];
-
-		data = scratch;
-	}
-}
-
-void sortPointMesh(Mesh& mesh)
-{
-	const Stream* positions = getStream(mesh, cgltf_attribute_type_position);
-	if (!positions)
-		return;
-
-	size_t vertex_count = mesh.streams[0].data.size();
-
-	std::vector<unsigned int> remap(vertex_count);
-	meshopt_spatialSortRemap(&remap[0], positions->data[0].f, vertex_count, sizeof(Attr));
-
-	for (size_t i = 0; i < mesh.streams.size(); ++i)
-	{
-		assert(mesh.streams[i].data.size() == vertex_count);
-
-		meshopt_remapVertexBuffer(&mesh.streams[i].data[0], &mesh.streams[i].data[0], vertex_count, sizeof(Attr), &remap[0]);
-	}
-}
-
-void processMesh(Mesh& mesh, const Settings& settings)
-{
-	filterStreams(mesh);
-
-	switch (mesh.type)
-	{
-	case cgltf_primitive_type_points:
-		assert(mesh.indices.empty());
-		simplifyPointMesh(mesh, settings.simplify_threshold);
-		sortPointMesh(mesh);
-		break;
-
-	case cgltf_primitive_type_triangles:
-		filterBones(mesh);
-		reindexMesh(mesh);
-		filterTriangles(mesh);
-		simplifyMesh(mesh, settings.simplify_threshold, settings.simplify_aggressive);
-		optimizeMesh(mesh);
-		break;
-
-	default:
-		assert(!"Unknown primitive type");
-	}
-}
-
-bool getAttributeBounds(const std::vector<Mesh>& meshes, cgltf_attribute_type type, Attr& min, Attr& max)
-{
-	min.f[0] = min.f[1] = min.f[2] = min.f[3] = +FLT_MAX;
-	max.f[0] = max.f[1] = max.f[2] = max.f[3] = -FLT_MAX;
-
-	Attr pad = {};
-
-	bool valid = false;
-
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		const Mesh& mesh = meshes[i];
-
-		for (size_t j = 0; j < mesh.streams.size(); ++j)
-		{
-			const Stream& s = mesh.streams[j];
-
-			if (s.type == type)
-			{
-				if (s.target == 0)
-				{
-					for (size_t k = 0; k < s.data.size(); ++k)
-					{
-						const Attr& a = s.data[k];
-
-						min.f[0] = std::min(min.f[0], a.f[0]);
-						min.f[1] = std::min(min.f[1], a.f[1]);
-						min.f[2] = std::min(min.f[2], a.f[2]);
-						min.f[3] = std::min(min.f[3], a.f[3]);
-
-						max.f[0] = std::max(max.f[0], a.f[0]);
-						max.f[1] = std::max(max.f[1], a.f[1]);
-						max.f[2] = std::max(max.f[2], a.f[2]);
-						max.f[3] = std::max(max.f[3], a.f[3]);
-
-						valid = true;
-					}
-				}
-				else
-				{
-					for (size_t k = 0; k < s.data.size(); ++k)
-					{
-						const Attr& a = s.data[k];
-
-						pad.f[0] = std::max(pad.f[0], fabsf(a.f[0]));
-						pad.f[1] = std::max(pad.f[1], fabsf(a.f[1]));
-						pad.f[2] = std::max(pad.f[2], fabsf(a.f[2]));
-						pad.f[3] = std::max(pad.f[3], fabsf(a.f[3]));
-					}
-				}
-			}
-		}
-	}
-
-	if (valid)
-	{
-		for (int k = 0; k < 4; ++k)
-		{
-			min.f[k] -= pad.f[k];
-			max.f[k] += pad.f[k];
-		}
-	}
-
-	return valid;
-}
-
-QuantizationParams prepareQuantization(const std::vector<Mesh>& meshes, const Settings& settings)
-{
-	QuantizationParams result = {};
-
-	result.pos_bits = settings.pos_bits;
-
-	Attr pos_min, pos_max;
-	if (getAttributeBounds(meshes, cgltf_attribute_type_position, pos_min, pos_max))
-	{
-		result.pos_offset[0] = pos_min.f[0];
-		result.pos_offset[1] = pos_min.f[1];
-		result.pos_offset[2] = pos_min.f[2];
-		result.pos_scale = std::max(pos_max.f[0] - pos_min.f[0], std::max(pos_max.f[1] - pos_min.f[1], pos_max.f[2] - pos_min.f[2]));
-	}
-
-	result.uv_bits = settings.tex_bits;
-
-	Attr uv_min, uv_max;
-	if (getAttributeBounds(meshes, cgltf_attribute_type_texcoord, uv_min, uv_max))
-	{
-		result.uv_offset[0] = uv_min.f[0];
-		result.uv_offset[1] = uv_min.f[1];
-		result.uv_scale[0] = uv_max.f[0] - uv_min.f[0];
-		result.uv_scale[1] = uv_max.f[1] - uv_min.f[1];
-	}
-
-	return result;
-}
-
-void rescaleNormal(float& nx, float& ny, float& nz)
-{
-	// scale the normal to make sure the largest component is +-1.0
-	// this reduces the entropy of the normal by ~1.5 bits without losing precision
-	// it's better to use octahedral encoding but that requires special shader support
-	float nm = std::max(fabsf(nx), std::max(fabsf(ny), fabsf(nz)));
-	float ns = nm == 0.f ? 0.f : 1 / nm;
-
-	nx *= ns;
-	ny *= ns;
-	nz *= ns;
-}
-
-void renormalizeWeights(uint8_t (&w)[4])
-{
-	int sum = w[0] + w[1] + w[2] + w[3];
-
-	if (sum == 255)
-		return;
-
-	// we assume that the total error is limited to 0.5/component = 2
-	// this means that it's acceptable to adjust the max. component to compensate for the error
-	int max = 0;
-
-	for (int k = 1; k < 4; ++k)
-		if (w[k] > w[max])
-			max = k;
-
-	w[max] += uint8_t(255 - sum);
-}
-
-StreamFormat writeVertexStream(std::string& bin, const Stream& stream, const QuantizationParams& params, const Settings& settings, bool has_targets)
-{
-	if (stream.type == cgltf_attribute_type_position)
-	{
-		if (stream.target == 0)
-		{
-			float pos_rscale = params.pos_scale == 0.f ? 0.f : 1.f / params.pos_scale;
-
-			for (size_t i = 0; i < stream.data.size(); ++i)
-			{
-				const Attr& a = stream.data[i];
-
-				uint16_t v[4] = {
-				    uint16_t(meshopt_quantizeUnorm((a.f[0] - params.pos_offset[0]) * pos_rscale, params.pos_bits)),
-				    uint16_t(meshopt_quantizeUnorm((a.f[1] - params.pos_offset[1]) * pos_rscale, params.pos_bits)),
-				    uint16_t(meshopt_quantizeUnorm((a.f[2] - params.pos_offset[2]) * pos_rscale, params.pos_bits)),
-				    0};
-				bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-			}
-
-			StreamFormat format = {cgltf_type_vec3, cgltf_component_type_r_16u, false, 8};
-			return format;
-		}
-		else
-		{
-			float pos_rscale = params.pos_scale == 0.f ? 0.f : 1.f / params.pos_scale;
-
-			int maxv = 0;
-
-			for (size_t i = 0; i < stream.data.size(); ++i)
-			{
-				const Attr& a = stream.data[i];
-
-				maxv = std::max(maxv, meshopt_quantizeUnorm(fabsf(a.f[0]) * pos_rscale, params.pos_bits));
-				maxv = std::max(maxv, meshopt_quantizeUnorm(fabsf(a.f[1]) * pos_rscale, params.pos_bits));
-				maxv = std::max(maxv, meshopt_quantizeUnorm(fabsf(a.f[2]) * pos_rscale, params.pos_bits));
-			}
-
-			if (maxv <= 127)
-			{
-				for (size_t i = 0; i < stream.data.size(); ++i)
-				{
-					const Attr& a = stream.data[i];
-
-					int8_t v[4] = {
-					    int8_t((a.f[0] >= 0.f ? 1 : -1) * meshopt_quantizeUnorm(fabsf(a.f[0]) * pos_rscale, params.pos_bits)),
-					    int8_t((a.f[1] >= 0.f ? 1 : -1) * meshopt_quantizeUnorm(fabsf(a.f[1]) * pos_rscale, params.pos_bits)),
-					    int8_t((a.f[2] >= 0.f ? 1 : -1) * meshopt_quantizeUnorm(fabsf(a.f[2]) * pos_rscale, params.pos_bits)),
-					    0};
-					bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-				}
-
-				StreamFormat format = {cgltf_type_vec3, cgltf_component_type_r_8, false, 4};
-				return format;
-			}
-			else
-			{
-				for (size_t i = 0; i < stream.data.size(); ++i)
-				{
-					const Attr& a = stream.data[i];
-
-					int16_t v[4] = {
-					    int16_t((a.f[0] >= 0.f ? 1 : -1) * meshopt_quantizeUnorm(fabsf(a.f[0]) * pos_rscale, params.pos_bits)),
-					    int16_t((a.f[1] >= 0.f ? 1 : -1) * meshopt_quantizeUnorm(fabsf(a.f[1]) * pos_rscale, params.pos_bits)),
-					    int16_t((a.f[2] >= 0.f ? 1 : -1) * meshopt_quantizeUnorm(fabsf(a.f[2]) * pos_rscale, params.pos_bits)),
-					    0};
-					bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-				}
-
-				StreamFormat format = {cgltf_type_vec3, cgltf_component_type_r_16, false, 8};
-				return format;
-			}
-		}
-	}
-	else if (stream.type == cgltf_attribute_type_texcoord)
-	{
-		float uv_rscale[2] = {
-		    params.uv_scale[0] == 0.f ? 0.f : 1.f / params.uv_scale[0],
-		    params.uv_scale[1] == 0.f ? 0.f : 1.f / params.uv_scale[1],
-		};
-
-		for (size_t i = 0; i < stream.data.size(); ++i)
-		{
-			const Attr& a = stream.data[i];
-
-			uint16_t v[2] = {
-			    uint16_t(meshopt_quantizeUnorm((a.f[0] - params.uv_offset[0]) * uv_rscale[0], params.uv_bits)),
-			    uint16_t(meshopt_quantizeUnorm((a.f[1] - params.uv_offset[1]) * uv_rscale[1], params.uv_bits)),
-			};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_vec2, cgltf_component_type_r_16u, false, 4};
-		return format;
-	}
-	else if (stream.type == cgltf_attribute_type_normal)
-	{
-		bool unnormalized = settings.nrm_unnormalized && !has_targets;
-		int bits = unnormalized ? settings.nrm_bits : (settings.nrm_bits > 8 ? 16 : 8);
-
-		for (size_t i = 0; i < stream.data.size(); ++i)
-		{
-			const Attr& a = stream.data[i];
-
-			float nx = a.f[0], ny = a.f[1], nz = a.f[2];
-
-			if (unnormalized)
-				rescaleNormal(nx, ny, nz);
-
-			if (bits > 8)
-			{
-				int16_t v[4] = {
-				    int16_t(meshopt_quantizeSnorm(nx, bits)),
-				    int16_t(meshopt_quantizeSnorm(ny, bits)),
-				    int16_t(meshopt_quantizeSnorm(nz, bits)),
-				    0};
-				bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-			}
-			else
-			{
-				int8_t v[4] = {
-				    int8_t(meshopt_quantizeSnorm(nx, bits)),
-				    int8_t(meshopt_quantizeSnorm(ny, bits)),
-				    int8_t(meshopt_quantizeSnorm(nz, bits)),
-				    0};
-				bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-			}
-		}
-
-		if (bits > 8)
-		{
-			StreamFormat format = {cgltf_type_vec3, cgltf_component_type_r_16, true, 8};
-			return format;
-		}
-		else
-		{
-			StreamFormat format = {cgltf_type_vec3, cgltf_component_type_r_8, true, 4};
-			return format;
-		}
-	}
-	else if (stream.type == cgltf_attribute_type_tangent)
-	{
-		bool unnormalized = settings.nrm_unnormalized && !has_targets;
-		int bits = unnormalized ? settings.nrm_bits : (settings.nrm_bits > 8 ? 16 : 8);
-
-		for (size_t i = 0; i < stream.data.size(); ++i)
-		{
-			const Attr& a = stream.data[i];
-
-			float nx = a.f[0], ny = a.f[1], nz = a.f[2], nw = a.f[3];
-
-			if (unnormalized)
-				rescaleNormal(nx, ny, nz);
-
-			if (bits > 8)
-			{
-				int16_t v[4] = {
-				    int16_t(meshopt_quantizeSnorm(nx, bits)),
-				    int16_t(meshopt_quantizeSnorm(ny, bits)),
-				    int16_t(meshopt_quantizeSnorm(nz, bits)),
-				    int16_t(meshopt_quantizeSnorm(nw, 8))};
-				bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-			}
-			else
-			{
-				int8_t v[4] = {
-				    int8_t(meshopt_quantizeSnorm(nx, bits)),
-				    int8_t(meshopt_quantizeSnorm(ny, bits)),
-				    int8_t(meshopt_quantizeSnorm(nz, bits)),
-				    int8_t(meshopt_quantizeSnorm(nw, 8))};
-				bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-			}
-		}
-
-		cgltf_type type = (stream.target == 0) ? cgltf_type_vec4 : cgltf_type_vec3;
-
-		if (bits > 8)
-		{
-			StreamFormat format = {type, cgltf_component_type_r_16, true, 8};
-			return format;
-		}
-		else
-		{
-			StreamFormat format = {type, cgltf_component_type_r_8, true, 4};
-			return format;
-		}
-	}
-	else if (stream.type == cgltf_attribute_type_color)
-	{
-		for (size_t i = 0; i < stream.data.size(); ++i)
-		{
-			const Attr& a = stream.data[i];
-
-			uint8_t v[4] = {
-			    uint8_t(meshopt_quantizeUnorm(a.f[0], 8)),
-			    uint8_t(meshopt_quantizeUnorm(a.f[1], 8)),
-			    uint8_t(meshopt_quantizeUnorm(a.f[2], 8)),
-			    uint8_t(meshopt_quantizeUnorm(a.f[3], 8))};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_vec4, cgltf_component_type_r_8u, true, 4};
-		return format;
-	}
-	else if (stream.type == cgltf_attribute_type_weights)
-	{
-		for (size_t i = 0; i < stream.data.size(); ++i)
-		{
-			const Attr& a = stream.data[i];
-
-			float ws = a.f[0] + a.f[1] + a.f[2] + a.f[3];
-			float wsi = (ws == 0.f) ? 0.f : 1.f / ws;
-
-			uint8_t v[4] = {
-			    uint8_t(meshopt_quantizeUnorm(a.f[0] * wsi, 8)),
-			    uint8_t(meshopt_quantizeUnorm(a.f[1] * wsi, 8)),
-			    uint8_t(meshopt_quantizeUnorm(a.f[2] * wsi, 8)),
-			    uint8_t(meshopt_quantizeUnorm(a.f[3] * wsi, 8))};
-
-			if (wsi != 0.f)
-				renormalizeWeights(v);
-
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_vec4, cgltf_component_type_r_8u, true, 4};
-		return format;
-	}
-	else if (stream.type == cgltf_attribute_type_joints)
-	{
-		unsigned int maxj = 0;
-
-		for (size_t i = 0; i < stream.data.size(); ++i)
-			maxj = std::max(maxj, unsigned(stream.data[i].f[0]));
-
-		assert(maxj <= 65535);
-
-		if (maxj <= 255)
-		{
-			for (size_t i = 0; i < stream.data.size(); ++i)
-			{
-				const Attr& a = stream.data[i];
-
-				uint8_t v[4] = {
-				    uint8_t(a.f[0]),
-				    uint8_t(a.f[1]),
-				    uint8_t(a.f[2]),
-				    uint8_t(a.f[3])};
-				bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-			}
-
-			StreamFormat format = {cgltf_type_vec4, cgltf_component_type_r_8u, false, 4};
-			return format;
-		}
-		else
-		{
-			for (size_t i = 0; i < stream.data.size(); ++i)
-			{
-				const Attr& a = stream.data[i];
-
-				uint16_t v[4] = {
-				    uint16_t(a.f[0]),
-				    uint16_t(a.f[1]),
-				    uint16_t(a.f[2]),
-				    uint16_t(a.f[3])};
-				bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-			}
-
-			StreamFormat format = {cgltf_type_vec4, cgltf_component_type_r_16u, false, 8};
-			return format;
-		}
-	}
-	else
-	{
-		for (size_t i = 0; i < stream.data.size(); ++i)
-		{
-			const Attr& a = stream.data[i];
-
-			float v[4] = {a.f[0], a.f[1], a.f[2], a.f[3]};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_vec4, cgltf_component_type_r_32f, false, 16};
-		return format;
-	}
-}
-
-void getPositionBounds(int min[3], int max[3], const Stream& stream, const QuantizationParams& params)
-{
-	assert(stream.type == cgltf_attribute_type_position);
-	assert(stream.data.size() > 0);
-
-	min[0] = min[1] = min[2] = INT_MAX;
-	max[0] = max[1] = max[2] = INT_MIN;
-
-	float pos_rscale = params.pos_scale == 0.f ? 0.f : 1.f / params.pos_scale;
-
-	if (stream.target == 0)
-	{
-		for (size_t i = 0; i < stream.data.size(); ++i)
-		{
-			const Attr& a = stream.data[i];
-
-			for (int k = 0; k < 3; ++k)
-			{
-				int v = meshopt_quantizeUnorm((a.f[k] - params.pos_offset[k]) * pos_rscale, params.pos_bits);
-
-				min[k] = std::min(min[k], v);
-				max[k] = std::max(max[k], v);
-			}
-		}
-	}
-	else
-	{
-		for (size_t i = 0; i < stream.data.size(); ++i)
-		{
-			const Attr& a = stream.data[i];
-
-			for (int k = 0; k < 3; ++k)
-			{
-				int v = (a.f[k] >= 0.f ? 1 : -1) * meshopt_quantizeUnorm(fabsf(a.f[k]) * pos_rscale, params.pos_bits);
-
-				min[k] = std::min(min[k], v);
-				max[k] = std::max(max[k], v);
-			}
-		}
-	}
-}
-
-StreamFormat writeIndexStream(std::string& bin, const std::vector<unsigned int>& stream)
-{
-	unsigned int maxi = 0;
-	for (size_t i = 0; i < stream.size(); ++i)
-		maxi = std::max(maxi, stream[i]);
-
-	// save 16-bit indices if we can; note that we can't use restart index (65535)
-	if (maxi < 65535)
-	{
-		for (size_t i = 0; i < stream.size(); ++i)
-		{
-			uint16_t v[1] = {uint16_t(stream[i])};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_scalar, cgltf_component_type_r_16u, false, 2};
-		return format;
-	}
-	else
-	{
-		for (size_t i = 0; i < stream.size(); ++i)
-		{
-			uint32_t v[1] = {stream[i]};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_scalar, cgltf_component_type_r_32u, false, 4};
-		return format;
-	}
-}
-
-StreamFormat writeTimeStream(std::string& bin, const std::vector<float>& data)
-{
-	for (size_t i = 0; i < data.size(); ++i)
-	{
-		float v[1] = {data[i]};
-		bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-	}
-
-	StreamFormat format = {cgltf_type_scalar, cgltf_component_type_r_32f, false, 4};
-	return format;
-}
-
-StreamFormat writeKeyframeStream(std::string& bin, cgltf_animation_path_type type, const std::vector<Attr>& data)
-{
-	if (type == cgltf_animation_path_type_rotation)
-	{
-		for (size_t i = 0; i < data.size(); ++i)
-		{
-			const Attr& a = data[i];
-
-			int16_t v[4] = {
-			    int16_t(meshopt_quantizeSnorm(a.f[0], 16)),
-			    int16_t(meshopt_quantizeSnorm(a.f[1], 16)),
-			    int16_t(meshopt_quantizeSnorm(a.f[2], 16)),
-			    int16_t(meshopt_quantizeSnorm(a.f[3], 16)),
-			};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_vec4, cgltf_component_type_r_16, true, 8};
-		return format;
-	}
-	else if (type == cgltf_animation_path_type_weights)
-	{
-		for (size_t i = 0; i < data.size(); ++i)
-		{
-			const Attr& a = data[i];
-
-			uint8_t v[1] = {uint8_t(meshopt_quantizeUnorm(a.f[0], 8))};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_scalar, cgltf_component_type_r_8u, true, 1};
-		return format;
-	}
-	else if (type == cgltf_animation_path_type_translation || type == cgltf_animation_path_type_scale)
-	{
-		int bits = 15;
-
-		for (size_t i = 0; i < data.size(); ++i)
-		{
-			const Attr& a = data[i];
-
-			float v[3] = {
-			    meshopt_quantizeFloat(a.f[0], bits),
-			    meshopt_quantizeFloat(a.f[1], bits),
-			    meshopt_quantizeFloat(a.f[2], bits)};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_vec3, cgltf_component_type_r_32f, false, 12};
-		return format;
-	}
-	else
-	{
-		for (size_t i = 0; i < data.size(); ++i)
-		{
-			const Attr& a = data[i];
-
-			float v[4] = {a.f[0], a.f[1], a.f[2], a.f[3]};
-			bin.append(reinterpret_cast<const char*>(v), sizeof(v));
-		}
-
-		StreamFormat format = {cgltf_type_vec4, cgltf_component_type_r_32f, false, 16};
-		return format;
-	}
-}
-
-void compressVertexStream(std::string& bin, const std::string& data, size_t count, size_t stride)
-{
-	assert(data.size() == count * stride);
-
-	std::vector<unsigned char> compressed(meshopt_encodeVertexBufferBound(count, stride));
-	size_t size = meshopt_encodeVertexBuffer(&compressed[0], compressed.size(), data.c_str(), count, stride);
-
-	bin.append(reinterpret_cast<const char*>(&compressed[0]), size);
-}
-
-void compressIndexStream(std::string& bin, const std::string& data, size_t count, size_t stride)
-{
-	assert(stride == 2 || stride == 4);
-	assert(data.size() == count * stride);
-
-	std::vector<unsigned char> compressed(meshopt_encodeIndexBufferBound(count, count * 3));
-	size_t size = 0;
-
-	if (stride == 2)
-		size = meshopt_encodeIndexBuffer(&compressed[0], compressed.size(), reinterpret_cast<const uint16_t*>(data.c_str()), count);
-	else
-		size = meshopt_encodeIndexBuffer(&compressed[0], compressed.size(), reinterpret_cast<const uint32_t*>(data.c_str()), count);
-
-	bin.append(reinterpret_cast<const char*>(&compressed[0]), size);
-}
-
-void comma(std::string& s)
-{
-	char ch = s.empty() ? 0 : s[s.size() - 1];
-
-	if (ch != 0 && ch != '[' && ch != '{')
-		s += ",";
-}
-
-void append(std::string& s, size_t v)
-{
-	char buf[32];
-	sprintf(buf, "%zu", v);
-	s += buf;
-}
-
-void append(std::string& s, float v)
-{
-	char buf[512];
-	sprintf(buf, "%.9g", v);
-	s += buf;
-}
-
-void append(std::string& s, const char* v)
-{
-	s += v;
-}
-
-void append(std::string& s, const std::string& v)
-{
-	s += v;
-}
-
-const char* componentType(cgltf_component_type type)
-{
-	switch (type)
-	{
-	case cgltf_component_type_r_8:
-		return "5120";
-	case cgltf_component_type_r_8u:
-		return "5121";
-	case cgltf_component_type_r_16:
-		return "5122";
-	case cgltf_component_type_r_16u:
-		return "5123";
-	case cgltf_component_type_r_32u:
-		return "5125";
-	case cgltf_component_type_r_32f:
-		return "5126";
-	default:
-		return "0";
-	}
-}
-
-const char* shapeType(cgltf_type type)
-{
-	switch (type)
-	{
-	case cgltf_type_scalar:
-		return "SCALAR";
-	case cgltf_type_vec2:
-		return "VEC2";
-	case cgltf_type_vec3:
-		return "VEC3";
-	case cgltf_type_vec4:
-		return "VEC4";
-	case cgltf_type_mat2:
-		return "MAT2";
-	case cgltf_type_mat3:
-		return "MAT3";
-	case cgltf_type_mat4:
-		return "MAT4";
-	default:
-		return "";
-	}
-}
-
-const char* attributeType(cgltf_attribute_type type)
-{
-	switch (type)
-	{
-	case cgltf_attribute_type_position:
-		return "POSITION";
-	case cgltf_attribute_type_normal:
-		return "NORMAL";
-	case cgltf_attribute_type_tangent:
-		return "TANGENT";
-	case cgltf_attribute_type_texcoord:
-		return "TEXCOORD";
-	case cgltf_attribute_type_color:
-		return "COLOR";
-	case cgltf_attribute_type_joints:
-		return "JOINTS";
-	case cgltf_attribute_type_weights:
-		return "WEIGHTS";
-	default:
-		return "ATTRIBUTE";
-	}
-}
-
-const char* animationPath(cgltf_animation_path_type type)
-{
-	switch (type)
-	{
-	case cgltf_animation_path_type_translation:
-		return "translation";
-	case cgltf_animation_path_type_rotation:
-		return "rotation";
-	case cgltf_animation_path_type_scale:
-		return "scale";
-	case cgltf_animation_path_type_weights:
-		return "weights";
-	default:
-		return "";
-	}
-}
-
-const char* lightType(cgltf_light_type type)
-{
-	switch (type)
-	{
-	case cgltf_light_type_directional:
-		return "directional";
-	case cgltf_light_type_point:
-		return "point";
-	case cgltf_light_type_spot:
-		return "spot";
-	default:
-		return "";
-	}
-}
-
-void writeTextureInfo(std::string& json, const cgltf_data* data, const cgltf_texture_view& view, const QuantizationParams& qp)
-{
-	assert(view.texture);
-
-	cgltf_texture_transform transform = {};
-
-	if (view.has_transform)
-	{
-		transform = view.transform;
-	}
-	else
-	{
-		transform.scale[0] = transform.scale[1] = 1.f;
-	}
-
-	transform.offset[0] += qp.uv_offset[0];
-	transform.offset[1] += qp.uv_offset[1];
-	transform.scale[0] *= qp.uv_scale[0] / float((1 << qp.uv_bits) - 1);
-	transform.scale[1] *= qp.uv_scale[1] / float((1 << qp.uv_bits) - 1);
-
-	append(json, "{\"index\":");
-	append(json, size_t(view.texture - data->textures));
-	append(json, ",\"texCoord\":");
-	append(json, size_t(view.texcoord));
-	append(json, ",\"extensions\":{\"KHR_texture_transform\":{");
-	append(json, "\"offset\":[");
-	append(json, transform.offset[0]);
-	append(json, ",");
-	append(json, transform.offset[1]);
-	append(json, "],\"scale\":[");
-	append(json, transform.scale[0]);
-	append(json, ",");
-	append(json, transform.scale[1]);
-	append(json, "]");
-	if (transform.rotation != 0.f)
-	{
-		append(json, ",\"rotation\":");
-		append(json, transform.rotation);
-	}
-	append(json, "}}}");
-}
-
-void writeMaterialInfo(std::string& json, const cgltf_data* data, const cgltf_material& material, const QuantizationParams& qp)
-{
-	static const float white[4] = {1, 1, 1, 1};
-	static const float black[4] = {0, 0, 0, 0};
-
-	if (material.name && *material.name)
-	{
-		comma(json);
-		append(json, "\"name\":\"");
-		append(json, material.name);
-		append(json, "\"");
-	}
-
-	if (material.has_pbr_metallic_roughness)
-	{
-		const cgltf_pbr_metallic_roughness& pbr = material.pbr_metallic_roughness;
-
-		comma(json);
-		append(json, "\"pbrMetallicRoughness\":{");
-		if (memcmp(pbr.base_color_factor, white, 16) != 0)
-		{
-			comma(json);
-			append(json, "\"baseColorFactor\":[");
-			append(json, pbr.base_color_factor[0]);
-			append(json, ",");
-			append(json, pbr.base_color_factor[1]);
-			append(json, ",");
-			append(json, pbr.base_color_factor[2]);
-			append(json, ",");
-			append(json, pbr.base_color_factor[3]);
-			append(json, "]");
-		}
-		if (pbr.base_color_texture.texture)
-		{
-			comma(json);
-			append(json, "\"baseColorTexture\":");
-			writeTextureInfo(json, data, pbr.base_color_texture, qp);
-		}
-		if (pbr.metallic_factor != 1)
-		{
-			comma(json);
-			append(json, "\"metallicFactor\":");
-			append(json, pbr.metallic_factor);
-		}
-		if (pbr.roughness_factor != 1)
-		{
-			comma(json);
-			append(json, "\"roughnessFactor\":");
-			append(json, pbr.roughness_factor);
-		}
-		if (pbr.metallic_roughness_texture.texture)
-		{
-			comma(json);
-			append(json, "\"metallicRoughnessTexture\":");
-			writeTextureInfo(json, data, pbr.metallic_roughness_texture, qp);
-		}
-		append(json, "}");
-	}
-
-	if (material.normal_texture.texture)
-	{
-		comma(json);
-		append(json, "\"normalTexture\":");
-		writeTextureInfo(json, data, material.normal_texture, qp);
-	}
-
-	if (material.occlusion_texture.texture)
-	{
-		comma(json);
-		append(json, "\"occlusionTexture\":");
-		writeTextureInfo(json, data, material.occlusion_texture, qp);
-	}
-
-	if (material.emissive_texture.texture)
-	{
-		comma(json);
-		append(json, "\"emissiveTexture\":");
-		writeTextureInfo(json, data, material.emissive_texture, qp);
-	}
-
-	if (memcmp(material.emissive_factor, black, 12) != 0)
-	{
-		comma(json);
-		append(json, "\"emissiveFactor\":[");
-		append(json, material.emissive_factor[0]);
-		append(json, ",");
-		append(json, material.emissive_factor[1]);
-		append(json, ",");
-		append(json, material.emissive_factor[2]);
-		append(json, "]");
-	}
-
-	if (material.alpha_mode != cgltf_alpha_mode_opaque)
-	{
-		comma(json);
-		append(json, "\"alphaMode\":");
-		append(json, (material.alpha_mode == cgltf_alpha_mode_blend) ? "\"BLEND\"" : "\"MASK\"");
-	}
-
-	if (material.alpha_cutoff != 0.5f)
-	{
-		comma(json);
-		append(json, "\"alphaCutoff\":");
-		append(json, material.alpha_cutoff);
-	}
-
-	if (material.double_sided)
-	{
-		comma(json);
-		append(json, "\"doubleSided\":true");
-	}
-
-	if (material.has_pbr_specular_glossiness || material.unlit)
-	{
-		comma(json);
-		append(json, "\"extensions\":{");
-
-		if (material.has_pbr_specular_glossiness)
-		{
-			const cgltf_pbr_specular_glossiness& pbr = material.pbr_specular_glossiness;
-
-			comma(json);
-			append(json, "\"KHR_materials_pbrSpecularGlossiness\":{");
-			if (pbr.diffuse_texture.texture)
-			{
-				comma(json);
-				append(json, "\"diffuseTexture\":");
-				writeTextureInfo(json, data, pbr.diffuse_texture, qp);
-			}
-			if (pbr.specular_glossiness_texture.texture)
-			{
-				comma(json);
-				append(json, "\"specularGlossinessTexture\":");
-				writeTextureInfo(json, data, pbr.specular_glossiness_texture, qp);
-			}
-			if (memcmp(pbr.diffuse_factor, white, 16) != 0)
-			{
-				comma(json);
-				append(json, "\"diffuseFactor\":[");
-				append(json, pbr.diffuse_factor[0]);
-				append(json, ",");
-				append(json, pbr.diffuse_factor[1]);
-				append(json, ",");
-				append(json, pbr.diffuse_factor[2]);
-				append(json, ",");
-				append(json, pbr.diffuse_factor[3]);
-				append(json, "]");
-			}
-			if (memcmp(pbr.specular_factor, white, 12) != 0)
-			{
-				comma(json);
-				append(json, "\"specularFactor\":[");
-				append(json, pbr.specular_factor[0]);
-				append(json, ",");
-				append(json, pbr.specular_factor[1]);
-				append(json, ",");
-				append(json, pbr.specular_factor[2]);
-				append(json, "]");
-			}
-			if (pbr.glossiness_factor != 1)
-			{
-				comma(json);
-				append(json, "\"glossinessFactor\":");
-				append(json, pbr.glossiness_factor);
-			}
-			append(json, "}");
-		}
-		if (material.unlit)
-		{
-			comma(json);
-			append(json, "\"KHR_materials_unlit\":{}");
-		}
-
-		append(json, "}");
-	}
-}
-
-size_t getBufferView(std::vector<BufferView>& views, BufferView::Kind kind, int variant, size_t stride, bool compressed)
-{
-	if (variant >= 0)
-	{
-		for (size_t i = 0; i < views.size(); ++i)
-			if (views[i].kind == kind && views[i].variant == variant && views[i].stride == stride && views[i].compressed == compressed)
-				return i;
-	}
-
-	BufferView view = {kind, variant, stride, compressed};
-	views.push_back(view);
-
-	return views.size() - 1;
-}
-
-void writeBufferView(std::string& json, BufferView::Kind kind, size_t count, size_t stride, size_t bin_offset, size_t bin_size, int compression, size_t compressed_offset, size_t compressed_size)
-{
-	assert(bin_size == count * stride);
-
-	// when compression is enabled, we store uncompressed data in buffer 1 and compressed data in buffer 0
-	// when compression is disabled, we store uncompressed data in buffer 0
-	size_t buffer = compression >= 0 ? 1 : 0;
-
-	append(json, "{\"buffer\":");
-	append(json, buffer);
-	append(json, ",\"byteOffset\":");
-	append(json, bin_offset);
-	append(json, ",\"byteLength\":");
-	append(json, bin_size);
-	if (kind == BufferView::Kind_Vertex)
-	{
-		append(json, ",\"byteStride\":");
-		append(json, stride);
-	}
-	if (kind == BufferView::Kind_Vertex || kind == BufferView::Kind_Index)
-	{
-		append(json, ",\"target\":");
-		append(json, (kind == BufferView::Kind_Vertex) ? "34962" : "34963");
-	}
-	if (compression >= 0)
-	{
-		append(json, ",\"extensions\":{");
-		append(json, "\"MESHOPT_compression\":{");
-		append(json, "\"buffer\":0");
-		append(json, ",\"byteOffset\":");
-		append(json, size_t(compressed_offset));
-		append(json, ",\"byteLength\":");
-		append(json, size_t(compressed_size));
-		append(json, ",\"byteStride\":");
-		append(json, stride);
-		append(json, ",\"mode\":");
-		append(json, size_t(compression));
-		append(json, ",\"count\":");
-		append(json, count);
-		append(json, "}}");
-	}
-	append(json, "}");
-}
-
-void writeAccessor(std::string& json, size_t view, size_t offset, cgltf_type type, cgltf_component_type component_type, bool normalized, size_t count, const float* min = 0, const float* max = 0, size_t numminmax = 0)
-{
-	append(json, "{\"bufferView\":");
-	append(json, view);
-	append(json, ",\"byteOffset\":");
-	append(json, offset);
-	append(json, ",\"componentType\":");
-	append(json, componentType(component_type));
-	append(json, ",\"count\":");
-	append(json, count);
-	append(json, ",\"type\":\"");
-	append(json, shapeType(type));
-	append(json, "\"");
-
-	if (normalized)
-	{
-		append(json, ",\"normalized\":true");
-	}
-
-	if (min && max)
-	{
-		assert(numminmax);
-
-		append(json, ",\"min\":[");
-		for (size_t k = 0; k < numminmax; ++k)
-		{
-			comma(json);
-			append(json, min[k]);
-		}
-		append(json, "],\"max\":[");
-		for (size_t k = 0; k < numminmax; ++k)
-		{
-			comma(json);
-			append(json, max[k]);
-		}
-		append(json, "]");
-	}
-
-	append(json, "}");
-}
-
-float getDelta(const Attr& l, const Attr& r, cgltf_animation_path_type type)
-{
-	switch (type)
-	{
-	case cgltf_animation_path_type_translation:
-		return std::max(std::max(fabsf(l.f[0] - r.f[0]), fabsf(l.f[1] - r.f[1])), fabsf(l.f[2] - r.f[2]));
-
-	case cgltf_animation_path_type_rotation:
-		return acosf(std::min(1.f, fabsf(l.f[0] * r.f[0] + l.f[1] * r.f[1] + l.f[2] * r.f[2] + l.f[3] * r.f[3])));
-
-	case cgltf_animation_path_type_scale:
-		return std::max(std::max(fabsf(l.f[0] / r.f[0] - 1), fabsf(l.f[1] / r.f[1] - 1)), fabsf(l.f[2] / r.f[2] - 1));
-
-	case cgltf_animation_path_type_weights:
-		return fabsf(l.f[0] - r.f[0]);
-
-	default:
-		assert(!"Uknown animation path");
-		return 0;
-	}
-}
-
-float getDeltaTolerance(cgltf_animation_path_type type)
-{
-	switch (type)
-	{
-	case cgltf_animation_path_type_translation:
-		return 0.001f; // linear
-
-	case cgltf_animation_path_type_rotation:
-		return 0.001f; // radians
-
-	case cgltf_animation_path_type_scale:
-		return 0.001f; // ratio
-
-	case cgltf_animation_path_type_weights:
-		return 0.001f; // linear
-
-	default:
-		assert(!"Uknown animation path");
-		return 0;
-	}
-}
-
-Attr interpolateLinear(const Attr& l, const Attr& r, float t, cgltf_animation_path_type type)
-{
-	if (type == cgltf_animation_path_type_rotation)
-	{
-		// Approximating slerp, https://zeux.io/2015/07/23/approximating-slerp/
-		// We also handle quaternion double-cover
-		float ca = l.f[0] * r.f[0] + l.f[1] * r.f[1] + l.f[2] * r.f[2] + l.f[3] * r.f[3];
-
-		float d = fabsf(ca);
-		float A = 1.0904f + d * (-3.2452f + d * (3.55645f - d * 1.43519f));
-		float B = 0.848013f + d * (-1.06021f + d * 0.215638f);
-		float k = A * (t - 0.5f) * (t - 0.5f) + B;
-		float ot = t + t * (t - 0.5f) * (t - 1) * k;
-
-		float t0 = 1 - ot;
-		float t1 = ca > 0 ? ot : -ot;
-
-		Attr lerp = {{
-		    l.f[0] * t0 + r.f[0] * t1,
-		    l.f[1] * t0 + r.f[1] * t1,
-		    l.f[2] * t0 + r.f[2] * t1,
-		    l.f[3] * t0 + r.f[3] * t1,
-		}};
-
-		float len = sqrtf(lerp.f[0] * lerp.f[0] + lerp.f[1] * lerp.f[1] + lerp.f[2] * lerp.f[2] + lerp.f[3] * lerp.f[3]);
-
-		if (len > 0.f)
-		{
-			lerp.f[0] /= len;
-			lerp.f[1] /= len;
-			lerp.f[2] /= len;
-			lerp.f[3] /= len;
-		}
-
-		return lerp;
-	}
-	else
-	{
-		Attr lerp = {{
-		    l.f[0] * (1 - t) + r.f[0] * t,
-		    l.f[1] * (1 - t) + r.f[1] * t,
-		    l.f[2] * (1 - t) + r.f[2] * t,
-		    l.f[3] * (1 - t) + r.f[3] * t,
-		}};
-
-		return lerp;
-	}
-}
-
-Attr interpolateHermite(const Attr& v0, const Attr& t0, const Attr& v1, const Attr& t1, float t, float dt, cgltf_animation_path_type type)
-{
-	float s0 = 1 + t * t * (2 * t - 3);
-	float s1 = t + t * t * (t - 2);
-	float s2 = 1 - s0;
-	float s3 = t * t * (t - 1);
-
-	float ts1 = dt * s1;
-	float ts3 = dt * s3;
-
-	Attr lerp = {{
-	    s0 * v0.f[0] + ts1 * t0.f[0] + s2 * v1.f[0] + ts3 * t1.f[0],
-	    s0 * v0.f[1] + ts1 * t0.f[1] + s2 * v1.f[1] + ts3 * t1.f[1],
-	    s0 * v0.f[2] + ts1 * t0.f[2] + s2 * v1.f[2] + ts3 * t1.f[2],
-	    s0 * v0.f[3] + ts1 * t0.f[3] + s2 * v1.f[3] + ts3 * t1.f[3],
-	}};
-
-	if (type == cgltf_animation_path_type_rotation)
-	{
-		float len = sqrtf(lerp.f[0] * lerp.f[0] + lerp.f[1] * lerp.f[1] + lerp.f[2] * lerp.f[2] + lerp.f[3] * lerp.f[3]);
-
-		if (len > 0.f)
-		{
-			lerp.f[0] /= len;
-			lerp.f[1] /= len;
-			lerp.f[2] /= len;
-			lerp.f[3] /= len;
-		}
-	}
-
-	return lerp;
-}
-
-void resampleKeyframes(std::vector<Attr>& data, const std::vector<float>& input, const std::vector<Attr>& output, cgltf_animation_path_type type, cgltf_interpolation_type interpolation, size_t components, int frames, float mint, int freq)
-{
-	size_t cursor = 0;
-
-	for (int i = 0; i < frames; ++i)
-	{
-		float time = mint + float(i) / freq;
-
-		while (cursor + 1 < input.size())
-		{
-			float next_time = input[cursor + 1];
-
-			if (next_time > time)
-				break;
-
-			cursor++;
-		}
-
-		if (cursor + 1 < input.size())
-		{
-			float cursor_time = input[cursor + 0];
-			float next_time = input[cursor + 1];
-
-			float range = next_time - cursor_time;
-			float inv_range = (range == 0.f) ? 0.f : 1.f / (next_time - cursor_time);
-			float t = std::max(0.f, std::min(1.f, (time - cursor_time) * inv_range));
-
-			for (size_t j = 0; j < components; ++j)
-			{
-				switch (interpolation)
-				{
-				case cgltf_interpolation_type_linear:
-				{
-					const Attr& v0 = output[(cursor + 0) * components + j];
-					const Attr& v1 = output[(cursor + 1) * components + j];
-					data.push_back(interpolateLinear(v0, v1, t, type));
-				}
-				break;
-
-				case cgltf_interpolation_type_step:
-				{
-					const Attr& v = output[cursor * components + j];
-					data.push_back(v);
-				}
-				break;
-
-				case cgltf_interpolation_type_cubic_spline:
-				{
-					const Attr& v0 = output[(cursor * 3 + 1) * components + j];
-					const Attr& b0 = output[(cursor * 3 + 2) * components + j];
-					const Attr& a1 = output[(cursor * 3 + 3) * components + j];
-					const Attr& v1 = output[(cursor * 3 + 4) * components + j];
-					data.push_back(interpolateHermite(v0, b0, v1, a1, t, range, type));
-				}
-				break;
-
-				default:
-					assert(!"Unknown interpolation type");
-				}
-			}
-		}
-		else
-		{
-			size_t offset = (interpolation == cgltf_interpolation_type_cubic_spline) ? cursor * 3 + 1 : cursor;
-
-			for (size_t j = 0; j < components; ++j)
-			{
-				const Attr& v = output[offset * components + j];
-				data.push_back(v);
-			}
-		}
-	}
-}
-
-bool isTrackEqual(const std::vector<Attr>& data, cgltf_animation_path_type type, int frames, const Attr* value, size_t components)
-{
-	assert(data.size() == frames * components);
-
-	float tolerance = getDeltaTolerance(type);
-
-	for (int i = 0; i < frames; ++i)
-	{
-		for (size_t j = 0; j < components; ++j)
-		{
-			float delta = getDelta(value[j], data[i * components + j], type);
-
-			if (delta > tolerance)
-				return false;
-		}
-	}
-
-	return true;
-}
-
-void getBaseTransform(Attr* result, size_t components, cgltf_animation_path_type type, cgltf_node* node)
-{
-	switch (type)
-	{
-	case cgltf_animation_path_type_translation:
-		memcpy(result->f, node->translation, 3 * sizeof(float));
-		break;
-
-	case cgltf_animation_path_type_rotation:
-		memcpy(result->f, node->rotation, 4 * sizeof(float));
-		break;
-
-	case cgltf_animation_path_type_scale:
-		memcpy(result->f, node->scale, 3 * sizeof(float));
-		break;
-
-	case cgltf_animation_path_type_weights:
-		if (node->weights_count)
-		{
-			assert(node->weights_count == components);
-			memcpy(result->f, node->weights, components * sizeof(float));
-		}
-		else if (node->mesh && node->mesh->weights_count)
-		{
-			assert(node->mesh->weights_count == components);
-			memcpy(result->f, node->mesh->weights, components * sizeof(float));
-		}
-		break;
-
-	default:
-		assert(!"Unknown animation path");
-	}
-}
-
-void processAnimation(Animation& animation, const Settings& settings)
-{
-	float mint = 0, maxt = 0;
-
-	for (size_t i = 0; i < animation.tracks.size(); ++i)
-	{
-		const Track& track = animation.tracks[i];
-		assert(!track.time.empty());
-
-		mint = std::min(mint, track.time.front());
-		maxt = std::max(maxt, track.time.back());
-	}
-
-	// round the number of frames to nearest but favor the "up" direction
-	// this means that at 10 Hz resampling, we will try to preserve the last frame <10ms
-	// but if the last frame is <2ms we favor just removing this data
-	int frames = 1 + int((maxt - mint) * settings.anim_freq + 0.8f);
-
-	animation.start = mint;
-	animation.frames = frames;
-
-	std::vector<Attr> base;
-
-	for (size_t i = 0; i < animation.tracks.size(); ++i)
-	{
-		Track& track = animation.tracks[i];
-
-		std::vector<Attr> result;
-		resampleKeyframes(result, track.time, track.data, track.path, track.interpolation, track.components, frames, mint, settings.anim_freq);
-
-		track.time.clear();
-		track.data.swap(result);
-
-		if (isTrackEqual(track.data, track.path, frames, &track.data[0], track.components))
-		{
-			// track is constant (equal to first keyframe), we only need the first keyframe
-			track.data.resize(track.components);
-
-			// track.dummy is true iff track redundantly sets up the value to be equal to default node transform
-			base.resize(track.components);
-			getBaseTransform(&base[0], track.components, track.path, track.node);
-
-			track.dummy = isTrackEqual(track.data, track.path, 1, &base[0], track.components);
-		}
-	}
-}
-
-void markAnimated(cgltf_data* data, std::vector<NodeInfo>& nodes, const std::vector<Animation>& animations)
-{
-	for (size_t i = 0; i < animations.size(); ++i)
-	{
-		const Animation& animation = animations[i];
-
-		for (size_t j = 0; j < animation.tracks.size(); ++j)
-		{
-			const Track& track = animation.tracks[j];
-
-			// mark nodes that have animation tracks that change their base transform as animated
-			if (!track.dummy)
-			{
-				NodeInfo& ni = nodes[track.node - data->nodes];
-
-				ni.animated_paths |= (1 << track.path);
-			}
-		}
-	}
-
-	for (size_t i = 0; i < data->nodes_count; ++i)
-	{
-		NodeInfo& ni = nodes[i];
-
-		for (cgltf_node* node = &data->nodes[i]; node; node = node->parent)
-			ni.animated |= nodes[node - data->nodes].animated_paths != 0;
-	}
-}
-
-void markNeededNodes(cgltf_data* data, std::vector<NodeInfo>& nodes, const std::vector<Mesh>& meshes, const std::vector<Animation>& animations, const Settings& settings)
-{
-	// mark all joints as kept
-	for (size_t i = 0; i < data->skins_count; ++i)
-	{
-		const cgltf_skin& skin = data->skins[i];
-
-		// for now we keep all joints directly referenced by the skin and the entire ancestry tree; we keep names for joints as well
-		for (size_t j = 0; j < skin.joints_count; ++j)
-		{
-			NodeInfo& ni = nodes[skin.joints[j] - data->nodes];
-
-			ni.keep = true;
-		}
-	}
-
-	// mark all animated nodes as kept
-	for (size_t i = 0; i < animations.size(); ++i)
-	{
-		const Animation& animation = animations[i];
-
-		for (size_t j = 0; j < animation.tracks.size(); ++j)
-		{
-			const Track& track = animation.tracks[j];
-
-			if (settings.anim_const || !track.dummy)
-			{
-				NodeInfo& ni = nodes[track.node - data->nodes];
-
-				ni.keep = true;
-			}
-		}
-	}
-
-	// mark all mesh nodes as kept
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		const Mesh& mesh = meshes[i];
-
-		if (mesh.node)
-		{
-			NodeInfo& ni = nodes[mesh.node - data->nodes];
-
-			ni.keep = true;
-		}
-	}
-
-	// mark all light/camera nodes as kept
-	for (size_t i = 0; i < data->nodes_count; ++i)
-	{
-		const cgltf_node& node = data->nodes[i];
-
-		if (node.light || node.camera)
-		{
-			nodes[i].keep = true;
-		}
-	}
-
-	// mark all named nodes as needed (if -kn is specified)
-	if (settings.keep_named)
-	{
-		for (size_t i = 0; i < data->nodes_count; ++i)
-		{
-			const cgltf_node& node = data->nodes[i];
-
-			if (node.name && *node.name)
-			{
-				nodes[i].keep = true;
-			}
-		}
-	}
-}
-
-void markNeededMaterials(cgltf_data* data, std::vector<MaterialInfo>& materials, const std::vector<Mesh>& meshes)
-{
-	// mark all used materials as kept
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		const Mesh& mesh = meshes[i];
-
-		if (mesh.material)
-		{
-			MaterialInfo& mi = materials[mesh.material - data->materials];
-
-			mi.keep = true;
-		}
-	}
-}
-
-void remapNodes(cgltf_data* data, std::vector<NodeInfo>& nodes, size_t& node_offset)
-{
-	// to keep a node, we currently need to keep the entire ancestry chain
-	for (size_t i = 0; i < data->nodes_count; ++i)
-	{
-		if (!nodes[i].keep)
-			continue;
-
-		for (cgltf_node* node = &data->nodes[i]; node; node = node->parent)
-			nodes[node - data->nodes].keep = true;
-	}
-
-	// generate sequential indices for all nodes; they aren't sorted topologically
-	for (size_t i = 0; i < data->nodes_count; ++i)
-	{
-		NodeInfo& ni = nodes[i];
-
-		if (ni.keep)
-		{
-			ni.remap = int(node_offset);
-
-			node_offset++;
-		}
-	}
-}
-
-void analyzeImages(cgltf_data* data, std::vector<ImageInfo>& images)
-{
-	for (size_t i = 0; i < data->materials_count; ++i)
-	{
-		const cgltf_material& material = data->materials[i];
-
-		if (material.has_pbr_metallic_roughness)
-		{
-			const cgltf_pbr_metallic_roughness& pbr = material.pbr_metallic_roughness;
-
-			if (pbr.base_color_texture.texture && pbr.base_color_texture.texture->image)
-				images[pbr.base_color_texture.texture->image - data->images].srgb = true;
-		}
-
-		if (material.has_pbr_specular_glossiness)
-		{
-			const cgltf_pbr_specular_glossiness& pbr = material.pbr_specular_glossiness;
-
-			if (pbr.diffuse_texture.texture && pbr.diffuse_texture.texture->image)
-				images[pbr.diffuse_texture.texture->image - data->images].srgb = true;
-		}
-
-		if (material.emissive_texture.texture && material.emissive_texture.texture->image)
-			images[material.emissive_texture.texture->image - data->images].srgb = true;
-
-		if (material.normal_texture.texture && material.normal_texture.texture->image)
-			images[material.normal_texture.texture->image - data->images].normal_map = true;
-	}
-}
-
-bool parseDataUri(const char* uri, std::string& mime_type, std::string& result)
-{
-	if (strncmp(uri, "data:", 5) == 0)
-	{
-		const char* comma = strchr(uri, ',');
-
-		if (comma && comma - uri >= 7 && strncmp(comma - 7, ";base64", 7) == 0)
-		{
-			const char* base64 = comma + 1;
-			size_t base64_size = strlen(base64);
-			size_t size = base64_size - base64_size / 4;
-
-			if (base64_size >= 2)
-			{
-				size -= base64[base64_size - 2] == '=';
-				size -= base64[base64_size - 1] == '=';
-			}
-
-			void* data = 0;
-
-			cgltf_options options = {};
-			cgltf_result res = cgltf_load_buffer_base64(&options, size, base64, &data);
-
-			if (res != cgltf_result_success)
-				return false;
-
-			mime_type = std::string(uri + 5, comma - 7);
-			result = std::string(static_cast<const char*>(data), size);
-
-			free(data);
-
-			return true;
-		}
-	}
-
-	return false;
-}
-
-void writeEmbeddedImage(std::string& json, std::vector<BufferView>& views, const char* data, size_t size, const char* mime_type)
-{
-	size_t view = getBufferView(views, BufferView::Kind_Image, -1, 1, false);
-
-	assert(views[view].data.empty());
-	views[view].data.assign(data, size);
-
-	append(json, "\"bufferView\":");
-	append(json, view);
-	append(json, ",\"mimeType\":\"");
-	append(json, mime_type);
-	append(json, "\"");
-}
-
-std::string inferMimeType(const char* path)
-{
-	const char* ext = strrchr(path, '.');
-	if (!ext)
-		return "";
-
-	std::string extl = ext + 1;
-	for (size_t i = 0; i < extl.length(); ++i)
-		extl[i] = char(tolower(extl[i]));
-
-	if (extl == "jpg")
-		return "image/jpeg";
-	else
-		return "image/" + extl;
-}
-
-std::string getFullPath(const char* path, const char* base_path)
-{
-	std::string result = base_path;
-
-	std::string::size_type slash = result.find_last_of("/\\");
-	result.erase(slash == std::string::npos ? 0 : slash + 1);
-
-	result += path;
-
-	return result;
-}
-
-std::string getFileName(const char* path)
-{
-	std::string result = path;
-
-	std::string::size_type slash = result.find_last_of("/\\");
-	if (slash != std::string::npos)
-		result.erase(0, slash + 1);
-
-	std::string::size_type dot = result.find_last_of('.');
-	if (dot != std::string::npos)
-		result.erase(dot);
-
-	return result;
-}
-
-bool readFile(const char* path, std::string& data)
-{
-	FILE* file = fopen(path, "rb");
-	if (!file)
-		return false;
-
-	fseek(file, 0, SEEK_END);
-	long length = ftell(file);
-	fseek(file, 0, SEEK_SET);
-
-	if (length <= 0)
-	{
-		fclose(file);
-		return false;
-	}
-
-	data.resize(length);
-	size_t result = fread(&data[0], 1, data.size(), file);
-	fclose(file);
-
-	return result == data.size();
-}
-
-bool writeFile(const char* path, const std::string& data)
-{
-	FILE* file = fopen(path, "wb");
-	if (!file)
-		return false;
-
-	size_t result = fwrite(&data[0], 1, data.size(), file);
-	fclose(file);
-
-	return result == data.size();
-}
-
-struct TempFile
-{
-	std::string path;
-	int fd;
-
-	TempFile(const char* suffix)
-	    : fd(-1)
-	{
-#ifdef _WIN32
-		const char* temp_dir = getenv("TEMP");
-		path = temp_dir ? temp_dir : ".";
-		path += "\\gltfpack-XXXXXX";
-		(void)_mktemp(&path[0]);
-		path += suffix;
-#else
-		path = "/tmp/gltfpack-XXXXXX";
-		path += suffix;
-		fd = mkstemps(&path[0], strlen(suffix));
-#endif
-	}
-
-	~TempFile()
-	{
-		unlink(path.c_str());
-#ifndef _WIN32
-		close(fd);
-#endif
-	}
-};
-
-bool checkBasis()
-{
-	const char* basisu_path = getenv("BASISU_PATH");
-	std::string cmd = basisu_path ? basisu_path : "basisu";
-
-#ifdef _WIN32
-	cmd += " 2>nul";
-#else
-	cmd += " 2>/dev/null";
-#endif
-
-	FILE* pipe = popen(cmd.c_str(), "r");
-	if (!pipe)
-		return false;
-
-	char buf[15];
-	size_t read = fread(buf, 1, sizeof(buf), pipe);
-	pclose(pipe);
-
-	return read == sizeof(buf) && memcmp(buf, "Basis Universal", sizeof(buf)) == 0;
-}
-
-bool encodeBasis(const std::string& data, std::string& result, bool normal_map, bool srgb, int quality)
-{
-	TempFile temp_input(".raw");
-	TempFile temp_output(".basis");
-
-	if (!writeFile(temp_input.path.c_str(), data))
-		return false;
-
-	const char* basisu_path = getenv("BASISU_PATH");
-	std::string cmd = basisu_path ? basisu_path : "basisu";
-
-	char ql[16];
-	sprintf(ql, "%d", (quality * 255 + 50) / 100);
-
-	cmd += " -q ";
-	cmd += ql;
-
-	cmd += " -mipmap";
-
-	if (normal_map)
-	{
-		cmd += " -normal_map";
-		// for optimal quality we should specify seperate_rg_to_color_alpha but this requires renderer awareness
-	}
-	else if (!srgb)
-	{
-		cmd += " -linear";
-	}
-
-	cmd += " -file ";
-	cmd += temp_input.path;
-	cmd += " -output_file ";
-	cmd += temp_output.path;
-
-#ifdef _WIN32
-	cmd += " >nul";
-#else
-	cmd += " >/dev/null";
-#endif
-
-	int rc = system(cmd.c_str());
-
-	return rc == 0 && readFile(temp_output.path.c_str(), result);
-}
-
-// basistoktx.cpp
-extern std::string basisToKtx(const std::string& basis, bool srgb);
-
-void writeImage(std::string& json, std::vector<BufferView>& views, const cgltf_image& image, const ImageInfo& info, size_t index, const char* input_path, const char* output_path, const Settings& settings)
-{
-	std::string img_data;
-	std::string mime_type;
-
-	if (image.uri && parseDataUri(image.uri, mime_type, img_data))
-	{
-		// we will re-embed img_data below
-	}
-	else if (image.buffer_view && image.buffer_view->buffer->data && image.mime_type)
-	{
-		const cgltf_buffer_view* view = image.buffer_view;
-
-		img_data.assign(static_cast<const char*>(view->buffer->data) + view->offset, view->size);
-		mime_type = image.mime_type;
-	}
-	else if (image.uri && settings.texture_embed)
-	{
-		std::string full_path = getFullPath(image.uri, input_path);
-
-		if (!readFile(full_path.c_str(), img_data))
-		{
-			fprintf(stderr, "Warning: unable to read image %s, skipping\n", image.uri);
-		}
-
-		mime_type = inferMimeType(image.uri);
-	}
-
-	if (!img_data.empty())
-	{
-		if (settings.texture_basis)
-		{
-			std::string encoded;
-
-			if (encodeBasis(img_data, encoded, info.normal_map, info.srgb, settings.texture_quality))
-			{
-				if (settings.texture_ktx2)
-					encoded = basisToKtx(encoded, info.srgb);
-
-				writeEmbeddedImage(json, views, encoded.c_str(), encoded.size(), settings.texture_ktx2 ? "image/ktx2" : "image/basis");
-			}
-			else
-			{
-				fprintf(stderr, "Warning: unable to encode image %d with Basis, skipping\n", int(index));
-			}
-		}
-		else
-		{
-			writeEmbeddedImage(json, views, img_data.c_str(), img_data.size(), mime_type.c_str());
-		}
-	}
-	else if (image.uri)
-	{
-		if (settings.texture_basis)
-		{
-			std::string full_path = getFullPath(image.uri, input_path);
-			std::string basis_path = getFileName(image.uri) + (settings.texture_ktx2 ? ".ktx2" : ".basis");
-			std::string basis_full_path = getFullPath(basis_path.c_str(), output_path);
-
-			if (readFile(full_path.c_str(), img_data))
-			{
-				std::string encoded;
-
-				if (encodeBasis(img_data, encoded, info.normal_map, info.srgb, settings.texture_quality))
-				{
-					if (settings.texture_ktx2)
-						encoded = basisToKtx(encoded, info.srgb);
-
-					if (writeFile(basis_full_path.c_str(), encoded))
-					{
-						append(json, "\"uri\":\"");
-						append(json, basis_path);
-						append(json, "\"");
-					}
-					else
-					{
-						fprintf(stderr, "Warning: unable to save Basis image %s, skipping\n", image.uri);
-					}
-				}
-				else
-				{
-					fprintf(stderr, "Warning: unable to encode image %s with Basis, skipping\n", image.uri);
-				}
-			}
-			else
-			{
-				fprintf(stderr, "Warning: unable to read image %s, skipping\n", image.uri);
-			}
-		}
-		else
-		{
-			append(json, "\"uri\":\"");
-			append(json, image.uri);
-			append(json, "\"");
-		}
-	}
-	else
-	{
-		fprintf(stderr, "Warning: ignoring image %d since it has no URI and no valid buffer data\n", int(index));
-	}
-}
-
-void writeTexture(std::string& json, const cgltf_texture& texture, cgltf_data* data, const Settings& settings)
-{
-	if (texture.image)
-	{
-		if (settings.texture_ktx2)
-		{
-			append(json, "\"extensions\":{\"KHR_texture_basisu\":{\"source\":");
-			append(json, size_t(texture.image - data->images));
-			append(json, "}}");
-		}
-		else
-		{
-			append(json, "\"source\":");
-			append(json, size_t(texture.image - data->images));
-		}
-	}
-}
-
-void writeMeshAttributes(std::string& json, std::vector<BufferView>& views, std::string& json_accessors, size_t& accr_offset, const Mesh& mesh, int target, const QuantizationParams& qp, const Settings& settings)
-{
-	std::string scratch;
-
-	for (size_t j = 0; j < mesh.streams.size(); ++j)
-	{
-		const Stream& stream = mesh.streams[j];
-
-		if (stream.target != target)
-			continue;
-
-		scratch.clear();
-		StreamFormat format = writeVertexStream(scratch, stream, qp, settings, mesh.targets > 0);
-
-		size_t view = getBufferView(views, BufferView::Kind_Vertex, stream.type, format.stride, settings.compress);
-		size_t offset = views[view].data.size();
-		views[view].data += scratch;
-
-		comma(json_accessors);
-		if (stream.type == cgltf_attribute_type_position)
-		{
-			int min[3] = {};
-			int max[3] = {};
-			getPositionBounds(min, max, stream, qp);
-
-			float minf[3] = {float(min[0]), float(min[1]), float(min[2])};
-			float maxf[3] = {float(max[0]), float(max[1]), float(max[2])};
-
-			writeAccessor(json_accessors, view, offset, format.type, format.component_type, format.normalized, stream.data.size(), minf, maxf, 3);
-		}
-		else
-		{
-			writeAccessor(json_accessors, view, offset, format.type, format.component_type, format.normalized, stream.data.size());
-		}
-
-		size_t vertex_accr = accr_offset++;
-
-		comma(json);
-		append(json, "\"");
-		append(json, attributeType(stream.type));
-		if (stream.type != cgltf_attribute_type_position && stream.type != cgltf_attribute_type_normal && stream.type != cgltf_attribute_type_tangent)
-		{
-			append(json, "_");
-			append(json, size_t(stream.index));
-		}
-		append(json, "\":");
-		append(json, vertex_accr);
-	}
-}
-
-size_t writeMeshIndices(std::vector<BufferView>& views, std::string& json_accessors, size_t& accr_offset, const Mesh& mesh, const Settings& settings)
-{
-	std::string scratch;
-	StreamFormat format = writeIndexStream(scratch, mesh.indices);
-
-	// note: we prefer to merge all index streams together; however, index codec currently doesn't handle concatenated index streams well and loses compression ratio
-	int variant = settings.compress ? -1 : 0;
-
-	size_t view = getBufferView(views, BufferView::Kind_Index, variant, format.stride, settings.compress);
-	size_t offset = views[view].data.size();
-	views[view].data += scratch;
-
-	comma(json_accessors);
-	writeAccessor(json_accessors, view, offset, format.type, format.component_type, format.normalized, mesh.indices.size());
-
-	size_t index_accr = accr_offset++;
-
-	return index_accr;
-}
-
-size_t writeAnimationTime(std::vector<BufferView>& views, std::string& json_accessors, size_t& accr_offset, float mint, int frames, const Settings& settings)
-{
-	std::vector<float> time(frames);
-
-	for (int j = 0; j < frames; ++j)
-		time[j] = mint + float(j) / settings.anim_freq;
-
-	std::string scratch;
-	StreamFormat format = writeTimeStream(scratch, time);
-
-	size_t view = getBufferView(views, BufferView::Kind_Time, 0, format.stride, settings.compress);
-	size_t offset = views[view].data.size();
-	views[view].data += scratch;
-
-	comma(json_accessors);
-	writeAccessor(json_accessors, view, offset, cgltf_type_scalar, format.component_type, format.normalized, frames, &time.front(), &time.back(), 1);
-
-	size_t time_accr = accr_offset++;
-
-	return time_accr;
-}
-
-size_t writeJointBindMatrices(std::vector<BufferView>& views, std::string& json_accessors, size_t& accr_offset, const cgltf_skin& skin, const QuantizationParams& qp, const Settings& settings)
-{
-	std::string scratch;
-
-	for (size_t j = 0; j < skin.joints_count; ++j)
-	{
-		float transform[16] = {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1};
-
-		if (skin.inverse_bind_matrices)
-		{
-			cgltf_accessor_read_float(skin.inverse_bind_matrices, j, transform, 16);
-		}
-
-		float node_scale = qp.pos_scale / float((1 << qp.pos_bits) - 1);
-
-		// pos_offset has to be applied first, thus it results in an offset rotated by the bind matrix
-		transform[12] += qp.pos_offset[0] * transform[0] + qp.pos_offset[1] * transform[4] + qp.pos_offset[2] * transform[8];
-		transform[13] += qp.pos_offset[0] * transform[1] + qp.pos_offset[1] * transform[5] + qp.pos_offset[2] * transform[9];
-		transform[14] += qp.pos_offset[0] * transform[2] + qp.pos_offset[1] * transform[6] + qp.pos_offset[2] * transform[10];
-
-		// node_scale will be applied before the rotation/scale from transform
-		for (int k = 0; k < 12; ++k)
-			transform[k] *= node_scale;
-
-		scratch.append(reinterpret_cast<const char*>(transform), sizeof(transform));
-	}
-
-	size_t view = getBufferView(views, BufferView::Kind_Skin, 0, 64, settings.compress);
-	size_t offset = views[view].data.size();
-	views[view].data += scratch;
-
-	comma(json_accessors);
-	writeAccessor(json_accessors, view, offset, cgltf_type_mat4, cgltf_component_type_r_32f, false, skin.joints_count);
-
-	size_t matrix_accr = accr_offset++;
-
-	return matrix_accr;
-}
-
-void writeMeshNode(std::string& json, size_t mesh_offset, const Mesh& mesh, cgltf_data* data, const QuantizationParams& qp)
-{
-	float node_scale = qp.pos_scale / float((1 << qp.pos_bits) - 1);
-
-	comma(json);
-	append(json, "{\"mesh\":");
-	append(json, mesh_offset);
-	if (mesh.skin)
-	{
-		comma(json);
-		append(json, "\"skin\":");
-		append(json, size_t(mesh.skin - data->skins));
-	}
-	append(json, ",\"translation\":[");
-	append(json, qp.pos_offset[0]);
-	append(json, ",");
-	append(json, qp.pos_offset[1]);
-	append(json, ",");
-	append(json, qp.pos_offset[2]);
-	append(json, "],\"scale\":[");
-	append(json, node_scale);
-	append(json, ",");
-	append(json, node_scale);
-	append(json, ",");
-	append(json, node_scale);
-	append(json, "]");
-	if (mesh.node && mesh.node->weights_count)
-	{
-		append(json, ",\"weights\":[");
-		for (size_t j = 0; j < mesh.node->weights_count; ++j)
-		{
-			comma(json);
-			append(json, mesh.node->weights[j]);
-		}
-		append(json, "]");
-	}
-	append(json, "}");
-}
-
-void writeNode(std::string& json, const cgltf_node& node, const std::vector<NodeInfo>& nodes, cgltf_data* data)
-{
-	const NodeInfo& ni = nodes[&node - data->nodes];
-
-	comma(json);
-	append(json, "{");
-	if (node.name && *node.name)
-	{
-		comma(json);
-		append(json, "\"name\":\"");
-		append(json, node.name);
-		append(json, "\"");
-	}
-	if (node.has_translation)
-	{
-		comma(json);
-		append(json, "\"translation\":[");
-		append(json, node.translation[0]);
-		append(json, ",");
-		append(json, node.translation[1]);
-		append(json, ",");
-		append(json, node.translation[2]);
-		append(json, "]");
-	}
-	if (node.has_rotation)
-	{
-		comma(json);
-		append(json, "\"rotation\":[");
-		append(json, node.rotation[0]);
-		append(json, ",");
-		append(json, node.rotation[1]);
-		append(json, ",");
-		append(json, node.rotation[2]);
-		append(json, ",");
-		append(json, node.rotation[3]);
-		append(json, "]");
-	}
-	if (node.has_scale)
-	{
-		comma(json);
-		append(json, "\"scale\":[");
-		append(json, node.scale[0]);
-		append(json, ",");
-		append(json, node.scale[1]);
-		append(json, ",");
-		append(json, node.scale[2]);
-		append(json, "]");
-	}
-	if (node.has_matrix)
-	{
-		comma(json);
-		append(json, "\"matrix\":[");
-		for (int k = 0; k < 16; ++k)
-		{
-			comma(json);
-			append(json, node.matrix[k]);
-		}
-		append(json, "]");
-	}
-	if (node.children_count || !ni.meshes.empty())
-	{
-		comma(json);
-		append(json, "\"children\":[");
-		for (size_t j = 0; j < node.children_count; ++j)
-		{
-			const NodeInfo& ci = nodes[node.children[j] - data->nodes];
-
-			if (ci.keep)
-			{
-				comma(json);
-				append(json, size_t(ci.remap));
-			}
-		}
-		for (size_t j = 0; j < ni.meshes.size(); ++j)
-		{
-			comma(json);
-			append(json, ni.meshes[j]);
-		}
-		append(json, "]");
-	}
-	if (node.camera)
-	{
-		comma(json);
-		append(json, "\"camera\":");
-		append(json, size_t(node.camera - data->cameras));
-	}
-	if (node.light)
-	{
-		comma(json);
-		append(json, "\"extensions\":{\"KHR_lights_punctual\":{\"light\":");
-		append(json, size_t(node.light - data->lights));
-		append(json, "}}");
-	}
-	append(json, "}");
-}
-
-void writeAnimation(std::string& json, std::vector<BufferView>& views, std::string& json_accessors, size_t& accr_offset, const Animation& animation, size_t i, cgltf_data* data, const std::vector<NodeInfo>& nodes, const Settings& settings)
-{
-	std::vector<const Track*> tracks;
-
-	for (size_t j = 0; j < animation.tracks.size(); ++j)
-	{
-		const Track& track = animation.tracks[j];
-
-		const NodeInfo& ni = nodes[track.node - data->nodes];
-
-		if (!ni.keep)
-			continue;
-
-		if (!settings.anim_const && (ni.animated_paths & (1 << track.path)) == 0)
-			continue;
-
-		tracks.push_back(&track);
-	}
-
-	if (tracks.empty())
-	{
-		fprintf(stderr, "Warning: ignoring animation %d because it has no valid tracks\n", int(i));
-		return;
-	}
-
-	bool needs_time = false;
-	bool needs_pose = false;
-
-	for (size_t j = 0; j < tracks.size(); ++j)
-	{
-		const Track& track = *tracks[j];
-
-		bool tc = track.data.size() == track.components;
-
-		needs_time = needs_time || !tc;
-		needs_pose = needs_pose || tc;
-	}
-
-	size_t time_accr = needs_time ? writeAnimationTime(views, json_accessors, accr_offset, animation.start, animation.frames, settings) : 0;
-	size_t pose_accr = needs_pose ? writeAnimationTime(views, json_accessors, accr_offset, animation.start, 1, settings) : 0;
-
-	std::string json_samplers;
-	std::string json_channels;
-
-	size_t track_offset = 0;
-
-	for (size_t j = 0; j < tracks.size(); ++j)
-	{
-		const Track& track = *tracks[j];
-
-		bool tc = track.data.size() == track.components;
-
-		std::string scratch;
-		StreamFormat format = writeKeyframeStream(scratch, track.path, track.data);
-
-		size_t view = getBufferView(views, BufferView::Kind_Keyframe, track.path, format.stride, settings.compress && track.path != cgltf_animation_path_type_weights);
-		size_t offset = views[view].data.size();
-		views[view].data += scratch;
-
-		comma(json_accessors);
-		writeAccessor(json_accessors, view, offset, format.type, format.component_type, format.normalized, track.data.size());
-
-		size_t data_accr = accr_offset++;
-
-		comma(json_samplers);
-		append(json_samplers, "{\"input\":");
-		append(json_samplers, tc ? pose_accr : time_accr);
-		append(json_samplers, ",\"output\":");
-		append(json_samplers, data_accr);
-		append(json_samplers, "}");
-
-		const NodeInfo& tni = nodes[track.node - data->nodes];
-		size_t target_node = size_t(tni.remap);
-
-		if (track.path == cgltf_animation_path_type_weights)
-		{
-			assert(tni.meshes.size() == 1);
-			target_node = tni.meshes[0];
-		}
-
-		comma(json_channels);
-		append(json_channels, "{\"sampler\":");
-		append(json_channels, track_offset);
-		append(json_channels, ",\"target\":{\"node\":");
-		append(json_channels, target_node);
-		append(json_channels, ",\"path\":\"");
-		append(json_channels, animationPath(track.path));
-		append(json_channels, "\"}}");
-
-		track_offset++;
-	}
-
-	comma(json);
-	append(json, "{");
-	if (animation.name && *animation.name)
-	{
-		append(json, "\"name\":\"");
-		append(json, animation.name);
-		append(json, "\",");
-	}
-	append(json, "\"samplers\":[");
-	append(json, json_samplers);
-	append(json, "],\"channels\":[");
-	append(json, json_channels);
-	append(json, "]}");
-}
-
-void writeCamera(std::string& json, const cgltf_camera& camera)
-{
-	comma(json);
-	append(json, "{");
-
-	switch (camera.type)
-	{
-	case cgltf_camera_type_perspective:
-		append(json, "\"type\":\"perspective\",\"perspective\":{");
-		append(json, "\"yfov\":");
-		append(json, camera.data.perspective.yfov);
-		append(json, ",\"znear\":");
-		append(json, camera.data.perspective.znear);
-		if (camera.data.perspective.aspect_ratio != 0.f)
-		{
-			append(json, ",\"aspectRatio\":");
-			append(json, camera.data.perspective.aspect_ratio);
-		}
-		if (camera.data.perspective.zfar != 0.f)
-		{
-			append(json, ",\"zfar\":");
-			append(json, camera.data.perspective.zfar);
-		}
-		append(json, "}");
-		break;
-
-	case cgltf_camera_type_orthographic:
-		append(json, "\"type\":\"orthographic\",\"orthographic\":{");
-		append(json, "\"xmag\":");
-		append(json, camera.data.orthographic.xmag);
-		append(json, ",\"ymag\":");
-		append(json, camera.data.orthographic.ymag);
-		append(json, ",\"znear\":");
-		append(json, camera.data.orthographic.znear);
-		append(json, ",\"zfar\":");
-		append(json, camera.data.orthographic.zfar);
-		append(json, "}");
-		break;
-
-	default:
-		fprintf(stderr, "Warning: skipping camera of unknown type\n");
-	}
-
-	append(json, "}");
-}
-
-void writeLight(std::string& json, const cgltf_light& light)
-{
-	static const float white[3] = {1, 1, 1};
-
-	comma(json);
-	append(json, "{\"type\":\"");
-	append(json, lightType(light.type));
-	append(json, "\"");
-	if (memcmp(light.color, white, sizeof(white)) != 0)
-	{
-		comma(json);
-		append(json, "\"color\":[");
-		append(json, light.color[0]);
-		append(json, ",");
-		append(json, light.color[1]);
-		append(json, ",");
-		append(json, light.color[2]);
-		append(json, "]");
-	}
-	if (light.intensity != 1.f)
-	{
-		comma(json);
-		append(json, "\"intensity\":");
-		append(json, light.intensity);
-	}
-	if (light.range != 0.f)
-	{
-		comma(json);
-		append(json, "\"range\":");
-		append(json, light.range);
-	}
-	if (light.type == cgltf_light_type_spot)
-	{
-		comma(json);
-		append(json, "\"spot\":{");
-		append(json, "\"innerConeAngle\":");
-		append(json, light.spot_inner_cone_angle);
-		append(json, ",\"outerConeAngle\":");
-		append(json, light.spot_outer_cone_angle == 0.f ? 0.78539816339f : light.spot_outer_cone_angle);
-		append(json, "}");
-	}
-	append(json, "}");
-}
-
-void writeArray(std::string& json, const char* name, const std::string& contents)
-{
-	if (contents.empty())
-		return;
-
-	comma(json);
-	append(json, "\"");
-	append(json, name);
-	append(json, "\":[");
-	append(json, contents);
-	append(json, "]");
-}
-
-void writeExtensions(std::string& json, const ExtensionInfo* extensions, size_t count)
-{
-	comma(json);
-	append(json, "\"extensionsUsed\":[");
-	for (size_t i = 0; i < count; ++i)
-		if (extensions[i].used)
-		{
-			comma(json);
-			append(json, "\"");
-			append(json, extensions[i].name);
-			append(json, "\"");
-		}
-	append(json, "]");
-
-	comma(json);
-	append(json, "\"extensionsRequired\":[");
-	for (size_t i = 0; i < count; ++i)
-		if (extensions[i].used && extensions[i].required)
-		{
-			comma(json);
-			append(json, "\"");
-			append(json, extensions[i].name);
-			append(json, "\"");
-		}
-	append(json, "]");
-}
-
-void finalizeBufferViews(std::string& json, std::vector<BufferView>& views, std::string& bin, std::string& fallback)
-{
-	for (size_t i = 0; i < views.size(); ++i)
-	{
-		BufferView& view = views[i];
-
-		size_t bin_offset = bin.size();
-		size_t fallback_offset = fallback.size();
-
-		size_t count = view.data.size() / view.stride;
-
-		int compression = -1;
-
-		if (view.compressed)
-		{
-			if (view.kind == BufferView::Kind_Index)
-			{
-				compressIndexStream(bin, view.data, count, view.stride);
-				compression = 1;
-			}
-			else
-			{
-				compressVertexStream(bin, view.data, count, view.stride);
-				compression = 0;
-			}
-
-			fallback += view.data;
-		}
-		else
-		{
-			bin += view.data;
-		}
-
-		size_t raw_offset = (compression >= 0) ? fallback_offset : bin_offset;
-
-		comma(json);
-		writeBufferView(json, view.kind, count, view.stride, raw_offset, view.data.size(), compression, bin_offset, bin.size() - bin_offset);
-
-		// record written bytes for statistics
-		view.bytes = bin.size() - bin_offset;
-
-		// align each bufferView by 4 bytes
-		bin.resize((bin.size() + 3) & ~3);
-		fallback.resize((fallback.size() + 3) & ~3);
-	}
-}
-
-void printMeshStats(const std::vector<Mesh>& meshes, const char* name)
-{
-	size_t triangles = 0;
-	size_t vertices = 0;
-
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		const Mesh& mesh = meshes[i];
-
-		triangles += mesh.indices.size() / 3;
-		vertices += mesh.streams.empty() ? 0 : mesh.streams[0].data.size();
-	}
-
-	printf("%s: %d triangles, %d vertices\n", name, int(triangles), int(vertices));
-}
-
-void printSceneStats(const std::vector<BufferView>& views, const std::vector<Mesh>& meshes, size_t node_offset, size_t mesh_offset, size_t material_offset, size_t json_size, size_t bin_size)
-{
-	size_t bytes[BufferView::Kind_Count] = {};
-
-	for (size_t i = 0; i < views.size(); ++i)
-	{
-		const BufferView& view = views[i];
-		bytes[view.kind] += view.bytes;
-	}
-
-	printf("output: %d nodes, %d meshes (%d primitives), %d materials\n", int(node_offset), int(mesh_offset), int(meshes.size()), int(material_offset));
-	printf("output: JSON %d bytes, buffers %d bytes\n", int(json_size), int(bin_size));
-	printf("output: buffers: vertex %d bytes, index %d bytes, skin %d bytes, time %d bytes, keyframe %d bytes, image %d bytes\n",
-	       int(bytes[BufferView::Kind_Vertex]), int(bytes[BufferView::Kind_Index]), int(bytes[BufferView::Kind_Skin]),
-	       int(bytes[BufferView::Kind_Time]), int(bytes[BufferView::Kind_Keyframe]), int(bytes[BufferView::Kind_Image]));
-}
-
-void printAttributeStats(const std::vector<BufferView>& views, BufferView::Kind kind, const char* name)
-{
-	for (size_t i = 0; i < views.size(); ++i)
-	{
-		const BufferView& view = views[i];
-
-		if (view.kind != kind)
-			continue;
-
-		const char* variant = "unknown";
-
-		switch (kind)
-		{
-		case BufferView::Kind_Vertex:
-			variant = attributeType(cgltf_attribute_type(view.variant));
-			break;
-
-		case BufferView::Kind_Index:
-			variant = "index";
-			break;
-
-		case BufferView::Kind_Keyframe:
-			variant = animationPath(cgltf_animation_path_type(view.variant));
-			break;
-
-		default:;
-		}
-
-		size_t count = view.data.size() / view.stride;
-
-		printf("stats: %s %s: compressed %d bytes (%.1f bits), raw %d bytes (%d bits)\n",
-		       name,
-		       variant,
-		       int(view.bytes),
-		       double(view.bytes) / double(count) * 8,
-		       int(view.data.size()),
-		       int(view.stride * 8));
-	}
-}
-
-void process(cgltf_data* data, const char* input_path, const char* output_path, std::vector<Mesh>& meshes, std::vector<Animation>& animations, const Settings& settings, std::string& json, std::string& bin, std::string& fallback)
-{
-	if (settings.verbose)
-	{
-		printf("input: %d nodes, %d meshes (%d primitives), %d materials, %d skins, %d animations\n",
-		       int(data->nodes_count), int(data->meshes_count), int(meshes.size()), int(data->materials_count), int(data->skins_count), int(animations.size()));
-		printMeshStats(meshes, "input");
-	}
-
-	for (size_t i = 0; i < animations.size(); ++i)
-	{
-		processAnimation(animations[i], settings);
-	}
-
-	std::vector<NodeInfo> nodes(data->nodes_count);
-
-	markAnimated(data, nodes, animations);
-
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		Mesh& mesh = meshes[i];
-
-		// note: when -kn is specified, we keep mesh-node attachment so that named nodes can be transformed
-		if (mesh.node && !settings.keep_named)
-		{
-			NodeInfo& ni = nodes[mesh.node - data->nodes];
-
-			// we transform all non-skinned non-animated meshes to world space
-			// this makes sure that quantization doesn't introduce gaps if the original scene was watertight
-			if (!ni.animated && !mesh.skin && mesh.targets == 0)
-			{
-				transformMesh(mesh, mesh.node);
-				mesh.node = 0;
-			}
-
-			// skinned and animated meshes will be anchored to the same node that they used to be in
-			// for animated meshes, this is important since they need to be transformed by the same animation
-			// for skinned meshes, in theory this isn't important since the transform of the skinned node doesn't matter; in practice this affects generated bounding box in three.js
-		}
-	}
-
-	mergeMeshMaterials(data, meshes);
-	mergeMeshes(meshes, settings);
-	filterEmptyMeshes(meshes);
-
-	markNeededNodes(data, nodes, meshes, animations, settings);
-
-	std::vector<MaterialInfo> materials(data->materials_count);
-
-	markNeededMaterials(data, materials, meshes);
-
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		processMesh(meshes[i], settings);
-	}
-
-	filterEmptyMeshes(meshes); // some meshes may become empty after processing
-
-	std::vector<ImageInfo> images(data->images_count);
-
-	analyzeImages(data, images);
-
-	QuantizationParams qp = prepareQuantization(meshes, settings);
-
-	std::string json_images;
-	std::string json_textures;
-	std::string json_materials;
-	std::string json_accessors;
-	std::string json_meshes;
-	std::string json_nodes;
-	std::string json_skins;
-	std::string json_roots;
-	std::string json_animations;
-	std::string json_cameras;
-	std::string json_lights;
-
-	std::vector<BufferView> views;
-
-	bool ext_pbr_specular_glossiness = false;
-	bool ext_unlit = false;
-
-	size_t accr_offset = 0;
-	size_t node_offset = 0;
-	size_t mesh_offset = 0;
-	size_t material_offset = 0;
-
-	for (size_t i = 0; i < data->images_count; ++i)
-	{
-		const cgltf_image& image = data->images[i];
-
-		if (settings.verbose && settings.texture_basis)
-		{
-			const char* uri = image.uri;
-			bool embedded = !uri || strncmp(uri, "data:", 5) == 0;
-
-			printf("image %d (%s) is being encoded with Basis\n", int(i), embedded ? "embedded" : uri);
-		}
-
-		comma(json_images);
-		append(json_images, "{");
-		writeImage(json_images, views, image, images[i], i, input_path, output_path, settings);
-		append(json_images, "}");
-	}
-
-	for (size_t i = 0; i < data->textures_count; ++i)
-	{
-		const cgltf_texture& texture = data->textures[i];
-
-		comma(json_textures);
-		append(json_textures, "{");
-		writeTexture(json_textures, texture, data, settings);
-		append(json_textures, "}");
-	}
-
-	for (size_t i = 0; i < data->materials_count; ++i)
-	{
-		MaterialInfo& mi = materials[i];
-
-		if (!mi.keep)
-			continue;
-
-		const cgltf_material& material = data->materials[i];
-
-		comma(json_materials);
-		append(json_materials, "{");
-		writeMaterialInfo(json_materials, data, material, qp);
-		append(json_materials, "}");
-
-		mi.remap = int(material_offset);
-		material_offset++;
-
-		ext_pbr_specular_glossiness = ext_pbr_specular_glossiness || material.has_pbr_specular_glossiness;
-		ext_unlit = ext_unlit || material.unlit;
-	}
-
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		const Mesh& mesh = meshes[i];
-
-		comma(json_meshes);
-		append(json_meshes, "{\"primitives\":[");
-
-		size_t pi = i;
-		for (; pi < meshes.size(); ++pi)
-		{
-			const Mesh& prim = meshes[pi];
-
-			if (prim.node != mesh.node || prim.skin != mesh.skin || prim.targets != mesh.targets)
-				break;
-
-			if (!compareMeshTargets(mesh, prim))
-				break;
-
-			comma(json_meshes);
-			append(json_meshes, "{\"attributes\":{");
-			writeMeshAttributes(json_meshes, views, json_accessors, accr_offset, prim, 0, qp, settings);
-			append(json_meshes, "}");
-			append(json_meshes, ",\"mode\":");
-			append(json_meshes, size_t(prim.type));
-
-			if (mesh.targets)
-			{
-				append(json_meshes, ",\"targets\":[");
-				for (size_t j = 0; j < mesh.targets; ++j)
-				{
-					comma(json_meshes);
-					append(json_meshes, "{");
-					writeMeshAttributes(json_meshes, views, json_accessors, accr_offset, prim, int(1 + j), qp, settings);
-					append(json_meshes, "}");
-				}
-				append(json_meshes, "]");
-			}
-
-			if (!prim.indices.empty())
-			{
-				size_t index_accr = writeMeshIndices(views, json_accessors, accr_offset, prim, settings);
-
-				append(json_meshes, ",\"indices\":");
-				append(json_meshes, index_accr);
-			}
-
-			if (prim.material)
-			{
-				MaterialInfo& mi = materials[prim.material - data->materials];
-
-				assert(mi.keep);
-				append(json_meshes, ",\"material\":");
-				append(json_meshes, size_t(mi.remap));
-			}
-
-			append(json_meshes, "}");
-		}
-
-		append(json_meshes, "]");
-
-		if (mesh.target_weights.size())
-		{
-			append(json_meshes, ",\"weights\":[");
-			for (size_t j = 0; j < mesh.target_weights.size(); ++j)
-			{
-				comma(json_meshes);
-				append(json_meshes, mesh.target_weights[j]);
-			}
-			append(json_meshes, "]");
-		}
-
-		if (mesh.target_names.size())
-		{
-			append(json_meshes, ",\"extras\":{\"targetNames\":[");
-			for (size_t j = 0; j < mesh.target_names.size(); ++j)
-			{
-				comma(json_meshes);
-				append(json_meshes, "\"");
-				append(json_meshes, mesh.target_names[j]);
-				append(json_meshes, "\"");
-			}
-			append(json_meshes, "]}");
-		}
-
-		append(json_meshes, "}");
-
-		writeMeshNode(json_nodes, mesh_offset, mesh, data, qp);
-
-		if (mesh.node)
-		{
-			NodeInfo& ni = nodes[mesh.node - data->nodes];
-
-			assert(ni.keep);
-			ni.meshes.push_back(node_offset);
-		}
-		else
-		{
-			comma(json_roots);
-			append(json_roots, node_offset);
-		}
-
-		node_offset++;
-		mesh_offset++;
-
-		// skip all meshes that we've written in this iteration
-		assert(pi > i);
-		i = pi - 1;
-	}
-
-	remapNodes(data, nodes, node_offset);
-
-	for (size_t i = 0; i < data->nodes_count; ++i)
-	{
-		NodeInfo& ni = nodes[i];
-
-		if (!ni.keep)
-			continue;
-
-		const cgltf_node& node = data->nodes[i];
-
-		if (!node.parent)
-		{
-			comma(json_roots);
-			append(json_roots, size_t(ni.remap));
-		}
-
-		writeNode(json_nodes, node, nodes, data);
-	}
-
-	for (size_t i = 0; i < data->skins_count; ++i)
-	{
-		const cgltf_skin& skin = data->skins[i];
-
-		size_t matrix_accr = writeJointBindMatrices(views, json_accessors, accr_offset, skin, qp, settings);
-
-		comma(json_skins);
-		append(json_skins, "{");
-		append(json_skins, "\"joints\":[");
-		for (size_t j = 0; j < skin.joints_count; ++j)
-		{
-			comma(json_skins);
-			append(json_skins, size_t(nodes[skin.joints[j] - data->nodes].remap));
-		}
-		append(json_skins, "]");
-		append(json_skins, ",\"inverseBindMatrices\":");
-		append(json_skins, matrix_accr);
-		if (skin.skeleton)
-		{
-			comma(json_skins);
-			append(json_skins, "\"skeleton\":");
-			append(json_skins, size_t(nodes[skin.skeleton - data->nodes].remap));
-		}
-		append(json_skins, "}");
-	}
-
-	for (size_t i = 0; i < animations.size(); ++i)
-	{
-		const Animation& animation = animations[i];
-
-		writeAnimation(json_animations, views, json_accessors, accr_offset, animation, i, data, nodes, settings);
-	}
-
-	for (size_t i = 0; i < data->cameras_count; ++i)
-	{
-		const cgltf_camera& camera = data->cameras[i];
-
-		writeCamera(json_cameras, camera);
-	}
-
-	for (size_t i = 0; i < data->lights_count; ++i)
-	{
-		const cgltf_light& light = data->lights[i];
-
-		writeLight(json_lights, light);
-	}
-
-	char version[32];
-	sprintf(version, "%d.%d", MESHOPTIMIZER_VERSION / 1000, (MESHOPTIMIZER_VERSION % 1000) / 10);
-
-	append(json, "\"asset\":{");
-	append(json, "\"version\":\"2.0\",\"generator\":\"gltfpack ");
-	append(json, version);
-	append(json, "\"");
-	if (data->asset.extras.start_offset)
-	{
-		append(json, ",\"extras\":");
-		json.append(data->json + data->asset.extras.start_offset, data->json + data->asset.extras.end_offset);
-	}
-	append(json, "}");
-
-	const ExtensionInfo extensions[] = {
-	    {"KHR_mesh_quantization", true, true},
-	    {"MESHOPT_compression", settings.compress, !settings.fallback},
-	    {"KHR_texture_transform", !json_textures.empty(), false},
-	    {"KHR_materials_pbrSpecularGlossiness", ext_pbr_specular_glossiness, false},
-	    {"KHR_materials_unlit", ext_unlit, false},
-	    {"KHR_lights_punctual", data->lights_count > 0, false},
-	    {"KHR_image_ktx2", !json_textures.empty() && settings.texture_ktx2, true},
-	    {"KHR_texture_basisu", !json_textures.empty() && settings.texture_ktx2, true},
-	};
-
-	writeExtensions(json, extensions, sizeof(extensions) / sizeof(extensions[0]));
-
-	std::string json_views;
-	finalizeBufferViews(json_views, views, bin, fallback);
-
-	writeArray(json, "bufferViews", json_views);
-	writeArray(json, "accessors", json_accessors);
-	writeArray(json, "images", json_images);
-	writeArray(json, "textures", json_textures);
-	writeArray(json, "materials", json_materials);
-	writeArray(json, "meshes", json_meshes);
-	writeArray(json, "skins", json_skins);
-	writeArray(json, "animations", json_animations);
-	writeArray(json, "nodes", json_nodes);
-
-	if (!json_roots.empty())
-	{
-		append(json, ",\"scenes\":[");
-		append(json, "{\"nodes\":[");
-		append(json, json_roots);
-		append(json, "]}]");
-	}
-
-	writeArray(json, "cameras", json_cameras);
-
-	if (!json_lights.empty())
-	{
-		append(json, ",\"extensions\":{\"KHR_lights_punctual\":{\"lights\":[");
-		append(json, json_lights);
-		append(json, "]}}");
-	}
-	if (!json_roots.empty())
-	{
-		append(json, ",\"scene\":0");
-	}
-
-	if (settings.verbose)
-	{
-		printMeshStats(meshes, "output");
-		printSceneStats(views, meshes, node_offset, mesh_offset, material_offset, json.size(), bin.size());
-	}
-
-	if (settings.verbose > 1)
-	{
-		printAttributeStats(views, BufferView::Kind_Vertex, "vertex");
-		printAttributeStats(views, BufferView::Kind_Index, "index");
-		printAttributeStats(views, BufferView::Kind_Keyframe, "keyframe");
-	}
-}
-
-void writeU32(FILE* out, uint32_t data)
-{
-	fwrite(&data, 4, 1, out);
-}
-
-bool requiresExtension(cgltf_data* data, const char* name)
-{
-	for (size_t i = 0; i < data->extensions_required_count; ++i)
-		if (strcmp(data->extensions_required[i], name) == 0)
-			return true;
-
-	return false;
-}
-
-const char* getBaseName(const char* path)
-{
-	const char* slash = strrchr(path, '/');
-	const char* backslash = strrchr(path, '\\');
-
-	const char* rs = slash ? slash + 1 : path;
-	const char* bs = backslash ? backslash + 1 : path;
-
-	return std::max(rs, bs);
-}
-
-std::string getBufferSpec(const char* bin_path, size_t bin_size, const char* fallback_path, size_t fallback_size, bool fallback_ref)
-{
-	std::string json;
-	append(json, "\"buffers\":[");
-	append(json, "{");
-	if (bin_path)
-	{
-		append(json, "\"uri\":\"");
-		append(json, bin_path);
-		append(json, "\"");
-	}
-	comma(json);
-	append(json, "\"byteLength\":");
-	append(json, bin_size);
-	append(json, "}");
-	if (fallback_ref)
-	{
-		comma(json);
-		append(json, "{");
-		if (fallback_path)
-		{
-			append(json, "\"uri\":\"");
-			append(json, fallback_path);
-			append(json, "\"");
-		}
-		comma(json);
-		append(json, "\"byteLength\":");
-		append(json, fallback_size);
-		append(json, ",\"extensions\":{");
-		append(json, "\"MESHOPT_compression\":{");
-		append(json, "\"fallback\":true");
-		append(json, "}}");
-		append(json, "}");
-	}
-	append(json, "]");
-
-	return json;
-}
-
-bool needsDummyBuffers(cgltf_data* data)
-{
-	for (size_t i = 0; i < data->accessors_count; ++i)
-	{
-		cgltf_accessor* accessor = &data->accessors[i];
-
-		if (accessor->buffer_view && accessor->buffer_view->buffer->data == NULL)
-			return true;
-
-		if (accessor->is_sparse)
-		{
-			cgltf_accessor_sparse* sparse = &accessor->sparse;
-
-			if (sparse->indices_buffer_view->buffer->data == NULL)
-				return true;
-			if (sparse->values_buffer_view->buffer->data == NULL)
-				return true;
-		}
-	}
-
-	return false;
-}
-
-int gltfpack(const char* input, const char* output, const Settings& settings)
-{
-	cgltf_data* data = 0;
-	std::vector<Mesh> meshes;
-	std::vector<Animation> animations;
-
-	const char* iext = strrchr(input, '.');
-
-	if (iext && (strcmp(iext, ".gltf") == 0 || strcmp(iext, ".GLTF") == 0 || strcmp(iext, ".glb") == 0 || strcmp(iext, ".GLB") == 0))
-	{
-		cgltf_options options = {};
-		cgltf_result result = cgltf_parse_file(&options, input, &data);
-		result = (result == cgltf_result_success) ? cgltf_load_buffers(&options, data, input) : result;
-		result = (result == cgltf_result_success) ? cgltf_validate(data) : result;
-
-		const char* error = NULL;
-
-		if (result != cgltf_result_success)
-			error = getError(result, data);
-		else if (requiresExtension(data, "KHR_draco_mesh_compression"))
-			error = "file requires Draco mesh compression support";
-		else if (requiresExtension(data, "MESHOPT_compression"))
-			error = "file has already been compressed using gltfpack";
-		else if (needsDummyBuffers(data))
-			error = "buffer has no data";
-
-		if (error)
-		{
-			fprintf(stderr, "Error loading %s: %s\n", input, error);
-			cgltf_free(data);
-			return 2;
-		}
-
-		parseMeshes(data, meshes);
-		parseAnimations(data, animations);
-	}
-	else if (iext && (strcmp(iext, ".obj") == 0 || strcmp(iext, ".OBJ") == 0))
-	{
-		fastObjMesh* obj = fast_obj_read(input);
-
-		if (!obj)
-		{
-			fprintf(stderr, "Error loading %s: file not found\n", input);
-			cgltf_free(data);
-			return 2;
-		}
-
-		data = parseSceneObj(obj);
-		parseMeshesObj(obj, data, meshes);
-
-		fast_obj_destroy(obj);
-	}
-	else
-	{
-		fprintf(stderr, "Error loading %s: unknown extension (expected .gltf or .glb or .obj)\n", input);
-		return 2;
-	}
-
-	if (data->images_count && settings.texture_basis)
-	{
-		if (!checkBasis())
-		{
-			fprintf(stderr, "Error: basisu is not present in PATH or BASISU_PATH is not set\n");
-			return 3;
-		}
-	}
-
-	std::string json, bin, fallback;
-	process(data, input, output, meshes, animations, settings, json, bin, fallback);
-
-	cgltf_free(data);
-
-	if (!output)
-	{
-		return 0;
-	}
-
-	const char* oext = strrchr(output, '.');
-
-	if (oext && (strcmp(oext, ".gltf") == 0 || strcmp(oext, ".GLTF") == 0))
-	{
-		std::string binpath = output;
-		binpath.replace(binpath.size() - 5, 5, ".bin");
-
-		std::string fbpath = output;
-		fbpath.replace(fbpath.size() - 5, 5, ".fallback.bin");
-
-		FILE* outjson = fopen(output, "wb");
-		FILE* outbin = fopen(binpath.c_str(), "wb");
-		FILE* outfb = settings.fallback ? fopen(fbpath.c_str(), "wb") : NULL;
-		if (!outjson || !outbin || (!outfb && settings.fallback))
-		{
-			fprintf(stderr, "Error saving %s\n", output);
-			return 4;
-		}
-
-		std::string bufferspec = getBufferSpec(getBaseName(binpath.c_str()), bin.size(), settings.fallback ? getBaseName(fbpath.c_str()) : NULL, fallback.size(), settings.compress);
-
-		fprintf(outjson, "{");
-		fwrite(bufferspec.c_str(), bufferspec.size(), 1, outjson);
-		fprintf(outjson, ",");
-		fwrite(json.c_str(), json.size(), 1, outjson);
-		fprintf(outjson, "}");
-
-		fwrite(bin.c_str(), bin.size(), 1, outbin);
-
-		if (settings.fallback)
-			fwrite(fallback.c_str(), fallback.size(), 1, outfb);
-
-		fclose(outjson);
-		fclose(outbin);
-		if (outfb)
-			fclose(outfb);
-	}
-	else if (oext && (strcmp(oext, ".glb") == 0 || strcmp(oext, ".GLB") == 0))
-	{
-		std::string fbpath = output;
-		fbpath.replace(fbpath.size() - 4, 4, ".fallback.bin");
-
-		FILE* out = fopen(output, "wb");
-		FILE* outfb = settings.fallback ? fopen(fbpath.c_str(), "wb") : NULL;
-		if (!out || (!outfb && settings.fallback))
-		{
-			fprintf(stderr, "Error saving %s\n", output);
-			return 4;
-		}
-
-		std::string bufferspec = getBufferSpec(NULL, bin.size(), settings.fallback ? getBaseName(fbpath.c_str()) : NULL, fallback.size(), settings.compress);
-
-		json.insert(0, "{" + bufferspec + ",");
-		json.push_back('}');
-
-		while (json.size() % 4)
-			json.push_back(' ');
-
-		while (bin.size() % 4)
-			bin.push_back('\0');
-
-		writeU32(out, 0x46546C67);
-		writeU32(out, 2);
-		writeU32(out, uint32_t(12 + 8 + json.size() + 8 + bin.size()));
-
-		writeU32(out, uint32_t(json.size()));
-		writeU32(out, 0x4E4F534A);
-		fwrite(json.c_str(), json.size(), 1, out);
-
-		writeU32(out, uint32_t(bin.size()));
-		writeU32(out, 0x004E4942);
-		fwrite(bin.c_str(), bin.size(), 1, out);
-
-		if (settings.fallback)
-			fwrite(fallback.c_str(), fallback.size(), 1, outfb);
-
-		fclose(out);
-		if (outfb)
-			fclose(outfb);
-	}
-	else
-	{
-		fprintf(stderr, "Error saving %s: unknown extension (expected .gltf or .glb)\n", output);
-		return 4;
-	}
-
-	return 0;
-}
-
-int main(int argc, char** argv)
-{
-	Settings settings = {};
-	settings.pos_bits = 14;
-	settings.tex_bits = 12;
-	settings.nrm_bits = 8;
-	settings.anim_freq = 30;
-	settings.simplify_threshold = 1.f;
-	settings.texture_quality = 50;
-
-	const char* input = 0;
-	const char* output = 0;
-	bool help = false;
-	int test = 0;
-
-	for (int i = 1; i < argc; ++i)
-	{
-		const char* arg = argv[i];
-
-		if (strcmp(arg, "-vp") == 0 && i + 1 < argc && isdigit(argv[i + 1][0]))
-		{
-			settings.pos_bits = atoi(argv[++i]);
-		}
-		else if (strcmp(arg, "-vt") == 0 && i + 1 < argc && isdigit(argv[i + 1][0]))
-		{
-			settings.tex_bits = atoi(argv[++i]);
-		}
-		else if (strcmp(arg, "-vn") == 0 && i + 1 < argc && isdigit(argv[i + 1][0]))
-		{
-			settings.nrm_bits = atoi(argv[++i]);
-		}
-		else if (strcmp(arg, "-vu") == 0)
-		{
-			settings.nrm_unnormalized = true;
-		}
-		else if (strcmp(arg, "-af") == 0 && i + 1 < argc && isdigit(argv[i + 1][0]))
-		{
-			settings.anim_freq = atoi(argv[++i]);
-		}
-		else if (strcmp(arg, "-ac") == 0)
-		{
-			settings.anim_const = true;
-		}
-		else if (strcmp(arg, "-kn") == 0)
-		{
-			settings.keep_named = true;
-		}
-		else if (strcmp(arg, "-si") == 0 && i + 1 < argc && isdigit(argv[i + 1][0]))
-		{
-			settings.simplify_threshold = float(atof(argv[++i]));
-		}
-		else if (strcmp(arg, "-sa") == 0)
-		{
-			settings.simplify_aggressive = true;
-		}
-		else if (strcmp(arg, "-te") == 0)
-		{
-			settings.texture_embed = true;
-		}
-		else if (strcmp(arg, "-tb") == 0)
-		{
-			settings.texture_basis = true;
-		}
-		else if (strcmp(arg, "-tc") == 0)
-		{
-			settings.texture_basis = true;
-			settings.texture_ktx2 = true;
-		}
-		else if (strcmp(arg, "-tq") == 0 && i + 1 < argc && isdigit(argv[i + 1][0]))
-		{
-			settings.texture_quality = atoi(argv[++i]);
-		}
-		else if (strcmp(arg, "-i") == 0 && i + 1 < argc && !input)
-		{
-			input = argv[++i];
-		}
-		else if (strcmp(arg, "-o") == 0 && i + 1 < argc && !output)
-		{
-			output = argv[++i];
-		}
-		else if (strcmp(arg, "-c") == 0)
-		{
-			settings.compress = true;
-		}
-		else if (strcmp(arg, "-cf") == 0)
-		{
-			settings.compress = true;
-			settings.fallback = true;
-		}
-		else if (strcmp(arg, "-v") == 0)
-		{
-			settings.verbose = 1;
-		}
-		else if (strcmp(arg, "-vv") == 0)
-		{
-			settings.verbose = 2;
-		}
-		else if (strcmp(arg, "-h") == 0)
-		{
-			help = true;
-		}
-		else if (strcmp(arg, "-test") == 0)
-		{
-			test = i + 1;
-			break;
-		}
-		else
-		{
-			fprintf(stderr, "Unrecognized option %s\n", arg);
-			return 1;
-		}
-	}
-
-	if (test)
-	{
-		for (int i = test; i < argc; ++i)
-		{
-			printf("%s\n", argv[i]);
-			gltfpack(argv[i], NULL, settings);
-		}
-
-		return 0;
-	}
-
-	if (!input || !output || help)
-	{
-		fprintf(stderr, "Usage: gltfpack [options] -i input -o output\n");
-		fprintf(stderr, "\n");
-		fprintf(stderr, "Options:\n");
-		fprintf(stderr, "-i file: input file to process, .obj/.gltf/.glb\n");
-		fprintf(stderr, "-o file: output file path, .gltf/.glb\n");
-		fprintf(stderr, "-vp N: use N-bit quantization for positions (default: 14; N should be between 1 and 16)\n");
-		fprintf(stderr, "-vt N: use N-bit quantization for texture corodinates (default: 12; N should be between 1 and 16)\n");
-		fprintf(stderr, "-vn N: use N-bit quantization for normals and tangents (default: 8; N should be between 1 and 16)\n");
-		fprintf(stderr, "-vu: use unnormalized normal/tangent vectors to improve compression (default: off)\n");
-		fprintf(stderr, "-af N: resample animations at N Hz (default: 30)\n");
-		fprintf(stderr, "-ac: keep constant animation tracks even if they don't modify the node transform\n");
-		fprintf(stderr, "-kn: keep named nodes and meshes attached to named nodes so that named nodes can be transformed externally\n");
-		fprintf(stderr, "-si R: simplify meshes to achieve the ratio R (default: 1; R should be between 0 and 1)\n");
-		fprintf(stderr, "-sa: aggressively simplify to the target ratio disregarding quality\n");
-		fprintf(stderr, "-te: embed all textures into main buffer\n");
-		fprintf(stderr, "-tb: convert all textures to Basis Universal format (with basisu executable)\n");
-		fprintf(stderr, "-tc: convert all textures to KTX2 with BasisU supercompression (using basisu executable)\n");
-		fprintf(stderr, "-tq N: set texture encoding quality (default: 50; N should be between 1 and 100\n");
-		fprintf(stderr, "-c: produce compressed gltf/glb files\n");
-		fprintf(stderr, "-cf: produce compressed gltf/glb files with fallback for loaders that don't support compression\n");
-		fprintf(stderr, "-v: verbose output\n");
-		fprintf(stderr, "-h: display this help and exit\n");
-
-		return 1;
-	}
-
-	return gltfpack(input, output, settings);
-}

3rdparty/meshoptimizer/tools/khr_df.h

@@ -1,627 +0,0 @@
-/* The Khronos Data Format Specification (version 1.3) */
-/*
-** Copyright (c) 2015-19 The Khronos Group Inc.
-**
-** Permission is hereby granted, free of charge, to any person obtaining a
-** copy of this software and/or associated documentation files (the
-** "Materials"), to deal in the Materials without restriction, including
-** without limitation the rights to use, copy, modify, merge, publish,
-** distribute, sublicense, and/or sell copies of the Materials, and to
-** permit persons to whom the Materials are furnished to do so, subject to
-** the following conditions:
-**
-** The above copyright notice and this permission notice shall be included
-** in all copies or substantial portions of the Materials.
-**
-** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
-*/
-
-/* This header defines a structure that can describe the layout of image
-   formats in memory. This means that the data format is transparent to
-   the application, and the expectation is that this should be used when
-   the layout is defined external to the API. Many Khronos APIs deliberately
-   keep the internal layout of images opaque, to allow proprietary layouts
-   and optimisations. This structure is not appropriate for describing
-   opaque layouts. */
-
-/* We stick to standard C89 constructs for simplicity and portability. */
-
-#ifndef _KHR_DATA_FORMAT_H_
-#define _KHR_DATA_FORMAT_H_
-
-/* Accessors */
-typedef enum _khr_word_e {
-    KHR_DF_WORD_VENDORID = 0U,
-    KHR_DF_WORD_DESCRIPTORTYPE = 0U,
-    KHR_DF_WORD_VERSIONNUMBER = 1U,
-    KHR_DF_WORD_DESCRIPTORBLOCKSIZE = 1U,
-    KHR_DF_WORD_MODEL = 2U,
-    KHR_DF_WORD_PRIMARIES = 2U,
-    KHR_DF_WORD_TRANSFER = 2U,
-    KHR_DF_WORD_FLAGS = 2U,
-    KHR_DF_WORD_TEXELBLOCKDIMENSION0 = 3U,
-    KHR_DF_WORD_TEXELBLOCKDIMENSION1 = 3U,
-    KHR_DF_WORD_TEXELBLOCKDIMENSION2 = 3U,
-    KHR_DF_WORD_TEXELBLOCKDIMENSION3 = 3U,
-    KHR_DF_WORD_BYTESPLANE0 = 4U,
-    KHR_DF_WORD_BYTESPLANE1 = 4U,
-    KHR_DF_WORD_BYTESPLANE2 = 4U,
-    KHR_DF_WORD_BYTESPLANE3 = 4U,
-    KHR_DF_WORD_BYTESPLANE4 = 5U,
-    KHR_DF_WORD_BYTESPLANE5 = 5U,
-    KHR_DF_WORD_BYTESPLANE6 = 5U,
-    KHR_DF_WORD_BYTESPLANE7 = 5U,
-    KHR_DF_WORD_SAMPLESTART = 6U,
-    KHR_DF_WORD_SAMPLEWORDS = 4U
-} khr_df_word_e;
-
-typedef enum _khr_df_shift_e {
-    KHR_DF_SHIFT_VENDORID = 0U,
-    KHR_DF_SHIFT_DESCRIPTORTYPE = 17U,
-    KHR_DF_SHIFT_VERSIONNUMBER = 0U,
-    KHR_DF_SHIFT_DESCRIPTORBLOCKSIZE = 16U,
-    KHR_DF_SHIFT_MODEL = 0U,
-    KHR_DF_SHIFT_PRIMARIES = 8U,
-    KHR_DF_SHIFT_TRANSFER = 16U,
-    KHR_DF_SHIFT_FLAGS = 24U,
-    KHR_DF_SHIFT_TEXELBLOCKDIMENSION0 = 0U,
-    KHR_DF_SHIFT_TEXELBLOCKDIMENSION1 = 8U,
-    KHR_DF_SHIFT_TEXELBLOCKDIMENSION2 = 16U,
-    KHR_DF_SHIFT_TEXELBLOCKDIMENSION3 = 24U,
-    KHR_DF_SHIFT_BYTESPLANE0 = 0U,
-    KHR_DF_SHIFT_BYTESPLANE1 = 8U,
-    KHR_DF_SHIFT_BYTESPLANE2 = 16U,
-    KHR_DF_SHIFT_BYTESPLANE3 = 24U,
-    KHR_DF_SHIFT_BYTESPLANE4 = 0U,
-    KHR_DF_SHIFT_BYTESPLANE5 = 8U,
-    KHR_DF_SHIFT_BYTESPLANE6 = 16U,
-    KHR_DF_SHIFT_BYTESPLANE7 = 24U
-} khr_df_shift_e;
-
-typedef enum _khr_df_mask_e {
-    KHR_DF_MASK_VENDORID = 0x1FFFFU,
-    KHR_DF_MASK_DESCRIPTORTYPE = 0x7FFFU,
-    KHR_DF_MASK_VERSIONNUMBER = 0xFFFFU,
-    KHR_DF_MASK_DESCRIPTORBLOCKSIZE = 0xFFFFU,
-    KHR_DF_MASK_MODEL = 0xFFU,
-    KHR_DF_MASK_PRIMARIES = 0xFFU,
-    KHR_DF_MASK_TRANSFER = 0xFFU,
-    KHR_DF_MASK_FLAGS = 0xFFU,
-    KHR_DF_MASK_TEXELBLOCKDIMENSION0 = 0xFFU,
-    KHR_DF_MASK_TEXELBLOCKDIMENSION1 = 0xFFU,
-    KHR_DF_MASK_TEXELBLOCKDIMENSION2 = 0xFFU,
-    KHR_DF_MASK_TEXELBLOCKDIMENSION3 = 0xFFU,
-    KHR_DF_MASK_BYTESPLANE0 = 0xFFU,
-    KHR_DF_MASK_BYTESPLANE1 = 0xFFU,
-    KHR_DF_MASK_BYTESPLANE2 = 0xFFU,
-    KHR_DF_MASK_BYTESPLANE3 = 0xFFU,
-    KHR_DF_MASK_BYTESPLANE4 = 0xFFU,
-    KHR_DF_MASK_BYTESPLANE5 = 0xFFU,
-    KHR_DF_MASK_BYTESPLANE6 = 0xFFU,
-    KHR_DF_MASK_BYTESPLANE7 = 0xFFU
-} khr_df_mask_e;
-
-/* Helper macro:
-   Extract field X from basic descriptor block BDB */
-#define KHR_DFDVAL(BDB, X) \
-    (((BDB)[KHR_DF_WORD_ ## X] >> (KHR_DF_SHIFT_ ## X)) \
-     & (KHR_DF_MASK_ ## X))
-
-/* Helper macro:
-   Set field X of basic descriptor block BDB */
-#define KHR_DFDSETVAL(BDB, X, val) \
-    ((BDB)[KHR_DF_WORD_ ## X] = \
-     ((BDB)[KHR_DF_WORD_ ## X] & \
-      ~((KHR_DF_MASK_ ## X) << (KHR_DF_SHIFT_ ## X))) | \
-     (((val) & (KHR_DF_MASK_ ## X)) << (KHR_DF_SHIFT_ ## X)))
-
-/* Offsets relative to the start of a sample */
-typedef enum _khr_df_sampleword_e {
-    KHR_DF_SAMPLEWORD_BITOFFSET = 0U,
-    KHR_DF_SAMPLEWORD_BITLENGTH = 0U,
-    KHR_DF_SAMPLEWORD_CHANNELID = 0U,
-    KHR_DF_SAMPLEWORD_QUALIFIERS = 0U,
-    KHR_DF_SAMPLEWORD_SAMPLEPOSITION0 = 1U,
-    KHR_DF_SAMPLEWORD_SAMPLEPOSITION1 = 1U,
-    KHR_DF_SAMPLEWORD_SAMPLEPOSITION2 = 1U,
-    KHR_DF_SAMPLEWORD_SAMPLEPOSITION3 = 1U,
-    KHR_DF_SAMPLEWORD_SAMPLEPOSITION_ALL = 1U,
-    KHR_DF_SAMPLEWORD_SAMPLELOWER = 2U,
-    KHR_DF_SAMPLEWORD_SAMPLEUPPER = 3U
-} khr_df_sampleword_e;
-
-typedef enum _khr_df_sampleshift_e {
-    KHR_DF_SAMPLESHIFT_BITOFFSET = 0U,
-    KHR_DF_SAMPLESHIFT_BITLENGTH = 16U,
-    KHR_DF_SAMPLESHIFT_CHANNELID = 24U,
-    /* N.B. Qualifiers are defined as an offset into a byte */
-    KHR_DF_SAMPLESHIFT_QUALIFIERS = 24U,
-    KHR_DF_SAMPLESHIFT_SAMPLEPOSITION0 = 0U,
-    KHR_DF_SAMPLESHIFT_SAMPLEPOSITION1 = 8U,
-    KHR_DF_SAMPLESHIFT_SAMPLEPOSITION2 = 16U,
-    KHR_DF_SAMPLESHIFT_SAMPLEPOSITION3 = 24U,
-    KHR_DF_SAMPLESHIFT_SAMPLEPOSITION_ALL = 0U,
-    KHR_DF_SAMPLESHIFT_SAMPLELOWER = 0U,
-    KHR_DF_SAMPLESHIFT_SAMPLEUPPER = 0U
-} khr_df_sampleshift_e;
-
-typedef enum _khr_df_samplemask_e {
-    KHR_DF_SAMPLEMASK_BITOFFSET = 0xFFFFU,
-    KHR_DF_SAMPLEMASK_BITLENGTH = 0xFF,
-    KHR_DF_SAMPLEMASK_CHANNELID = 0xF,
-    /* N.B. Qualifiers are defined as an offset into a byte */
-    KHR_DF_SAMPLEMASK_QUALIFIERS = 0xF0,
-    KHR_DF_SAMPLEMASK_SAMPLEPOSITION0 = 0xFF,
-    KHR_DF_SAMPLEMASK_SAMPLEPOSITION1 = 0xFF,
-    KHR_DF_SAMPLEMASK_SAMPLEPOSITION2 = 0xFF,
-    KHR_DF_SAMPLEMASK_SAMPLEPOSITION3 = 0xFF,
-    /* ISO C restricts enum values to range of int hence the
-       cast. We do it verbosely instead of using -1 to ensure
-       it is a 32-bit value even if int is 64 bits. */
-    KHR_DF_SAMPLEMASK_SAMPLEPOSITION_ALL = (int) 0xFFFFFFFFU,
-    KHR_DF_SAMPLEMASK_SAMPLELOWER = (int) 0xFFFFFFFFU,
-    KHR_DF_SAMPLEMASK_SAMPLEUPPER = (int) 0xFFFFFFFFU
-} khr_df_samplemask_e;
-
-/* Helper macro:
-   Extract field X of sample S from basic descriptor block BDB */
-#define KHR_DFDSVAL(BDB, S, X) \
-    (((BDB)[KHR_DF_WORD_SAMPLESTART + \
-            ((S) * KHR_DF_WORD_SAMPLEWORDS) + \
-            KHR_DF_SAMPLEWORD_ ## X] >> (KHR_DF_SAMPLESHIFT_ ## X)) \
-     & (KHR_DF_SAMPLEMASK_ ## X))
-
-/* Helper macro:
-   Set field X of sample S of basic descriptor block BDB */
-#define KHR_DFDSETSVAL(BDB, S, X, val) \
-    ((BDB)[KHR_DF_WORD_SAMPLESTART + \
-           ((S) * KHR_DF_WORD_SAMPLEWORDS) + \
-           KHR_DF_SAMPLEWORD_ ## X] = \
-     ((BDB)[KHR_DF_WORD_SAMPLESTART + \
-            ((S) * KHR_DF_WORD_SAMPLEWORDS) + \
-            KHR_DF_SAMPLEWORD_ ## X] & \
-      ~((uint32_t)(KHR_DF_SAMPLEMASK_ ## X) << (KHR_DF_SAMPLESHIFT_ ## X))) | \
-     (((val) & (uint32_t)(KHR_DF_SAMPLEMASK_ ## X)) << (KHR_DF_SAMPLESHIFT_ ## X)))
-
-/* Helper macro:
-   Number of samples in basic descriptor block BDB */
-#define KHR_DFDSAMPLECOUNT(BDB) \
-    (((KHR_DFDVAL(BDB, DESCRIPTORBLOCKSIZE) >> 2) - \
-      KHR_DF_WORD_SAMPLESTART) \
-     / KHR_DF_WORD_SAMPLEWORDS)
-
-/* Helper macro:
-   Size in words of basic descriptor block for S samples */
-#define KHR_DFDSIZEWORDS(S) \
-    (KHR_DF_WORD_SAMPLESTART + \
-     (S) * KHR_DF_WORD_SAMPLEWORDS)
-
-/* Vendor ids */
-typedef enum _khr_df_vendorid_e {
-    /* Standard Khronos descriptor */
-    KHR_DF_VENDORID_KHRONOS = 0U,
-    KHR_DF_VENDORID_MAX     = 0x1FFFFU
-} khr_df_vendorid_e;
-
-/* Descriptor types */
-typedef enum _khr_df_khr_descriptortype_e {
-    /* Default Khronos basic descriptor block */
-    KHR_DF_KHR_DESCRIPTORTYPE_BASICFORMAT = 0U,
-    /* Extension descriptor block for additional planes */
-    KHR_DF_KHR_DESCRIPTORTYPE_ADDITIONAL_PLANES = 0x6001U,
-    /* Extension descriptor block for additional dimensions */
-    KHR_DF_KHR_DESCRIPTORTYPE_ADDITIONAL_DIMENSIONS = 0x6002U,
-    /* Bit indicates modifying requires understanding this extension */
-    KHR_DF_KHR_DESCRIPTORTYPE_NEEDED_FOR_WRITE_BIT = 0x2000U,
-    /* Bit indicates processing requires understanding this extension */
-    KHR_DF_KHR_DESCRIPTORTYPE_NEEDED_FOR_DECODE_BIT = 0x4000U,
-    KHR_DF_KHR_DESCRIPTORTYPE_MAX         = 0x7FFFU
-} khr_df_khr_descriptortype_e;
-
-/* Descriptor block version */
-typedef enum _khr_df_versionnumber_e {
-    /* Standard Khronos descriptor */
-    KHR_DF_VERSIONNUMBER_1_0 = 0U, /* Version 1.0 of the specification */
-    KHR_DF_VERSIONNUMBER_1_1 = 0U, /* Version 1.1 did not bump the version number */
-    KHR_DF_VERSIONNUMBER_1_2 = 1U, /* Version 1.2 increased the version number */
-    KHR_DF_VERSIONNUMBER_1_3 = 2U, /* Version 1.3 increased the version number */
-    KHR_DF_VERSIONNUMBER_LATEST = KHR_DF_VERSIONNUMBER_1_3,
-    KHR_DF_VERSIONNUMBER_MAX = 0xFFFFU
-} khr_df_versionnumber_e;
-
-/* Model in which the color coordinate space is defined.
-   There is no requirement that a color format use all the
-   channel types that are defined in the color model. */
-typedef enum _khr_df_model_e {
-    /* No interpretation of color channels defined */
-    KHR_DF_MODEL_UNSPECIFIED  = 0U,
-    /* Color primaries (red, green, blue) + alpha, depth and stencil */
-    KHR_DF_MODEL_RGBSDA       = 1U,
-    /* Color differences (Y', Cb, Cr) + alpha, depth and stencil */
-    KHR_DF_MODEL_YUVSDA       = 2U,
-    /* Color differences (Y', I, Q) + alpha, depth and stencil */
-    KHR_DF_MODEL_YIQSDA       = 3U,
-    /* Perceptual color (CIE L*a*b*) + alpha, depth and stencil */
-    KHR_DF_MODEL_LABSDA       = 4U,
-    /* Subtractive colors (cyan, magenta, yellow, black) + alpha */
-    KHR_DF_MODEL_CMYKA        = 5U,
-    /* Non-color coordinate data (X, Y, Z, W) */
-    KHR_DF_MODEL_XYZW         = 6U,
-    /* Hue, saturation, value, hue angle on color circle, plus alpha */
-    KHR_DF_MODEL_HSVA_ANG     = 7U,
-    /* Hue, saturation, lightness, hue angle on color circle, plus alpha */
-    KHR_DF_MODEL_HSLA_ANG     = 8U,
-    /* Hue, saturation, value, hue on color hexagon, plus alpha */
-    KHR_DF_MODEL_HSVA_HEX     = 9U,
-    /* Hue, saturation, lightness, hue on color hexagon, plus alpha */
-    KHR_DF_MODEL_HSLA_HEX     = 10U,
-    /* Lightweight approximate color difference (luma, orange, green) */
-    KHR_DF_MODEL_YCGCOA       = 11U,
-    /* ITU BT.2020 constant luminance YcCbcCrc */
-    KHR_DF_MODEL_YCCBCCRC     = 12U,
-    /* ITU BT.2100 constant intensity ICtCp */
-    KHR_DF_MODEL_ICTCP        = 13U,
-    /* CIE 1931 XYZ color coordinates (X, Y, Z) */
-    KHR_DF_MODEL_CIEXYZ       = 14U,
-    /* CIE 1931 xyY color coordinates (X, Y, Y) */
-    KHR_DF_MODEL_CIEXYY       = 15U,
-
-    /* Compressed formats start at 128. */
-    /* These compressed formats should generally have a single sample,
-       sited at the 0,0 position of the texel block. Where multiple
-       channels are used to distinguish formats, these should be cosited. */
-    /* Direct3D (and S3) compressed formats */
-    /* Note that premultiplied status is recorded separately */
-    /* DXT1 "channels" are RGB (0), Alpha (1) */
-    /* DXT1/BC1 with one channel is opaque */
-    /* DXT1/BC1 with a cosited alpha sample is transparent */
-    KHR_DF_MODEL_DXT1A         = 128U,
-    KHR_DF_MODEL_BC1A          = 128U,
-    /* DXT2/DXT3/BC2, with explicit 4-bit alpha */
-    KHR_DF_MODEL_DXT2          = 129U,
-    KHR_DF_MODEL_DXT3          = 129U,
-    KHR_DF_MODEL_BC2           = 129U,
-    /* DXT4/DXT5/BC3, with interpolated alpha */
-    KHR_DF_MODEL_DXT4          = 130U,
-    KHR_DF_MODEL_DXT5          = 130U,
-    KHR_DF_MODEL_BC3           = 130U,
-    /* BC4 - single channel interpolated 8-bit data */
-    /* (The UNORM/SNORM variation is recorded in the channel data) */
-    KHR_DF_MODEL_BC4           = 131U,
-    /* BC5 - two channel interpolated 8-bit data */
-    /* (The UNORM/SNORM variation is recorded in the channel data) */
-    KHR_DF_MODEL_BC5           = 132U,
-    /* BC6H - DX11 format for 16-bit float channels */
-    KHR_DF_MODEL_BC6H          = 133U,
-    /* BC7 - DX11 format */
-    KHR_DF_MODEL_BC7           = 134U,
-    /* Gap left for future desktop expansion */
-
-    /* Mobile compressed formats follow */
-    /* A format of ETC1 indicates that the format shall be decodable
-       by an ETC1-compliant decoder and not rely on ETC2 features */
-    KHR_DF_MODEL_ETC1          = 160U,
-    /* A format of ETC2 is permitted to use ETC2 encodings on top of
-       the baseline ETC1 specification */
-    /* The ETC2 format has channels "red", "green", "RGB" and "alpha",
-       which should be cosited samples */
-    /* Punch-through alpha can be distinguished from full alpha by
-       the plane size in bytes required for the texel block */
-    KHR_DF_MODEL_ETC2          = 161U,
-    /* Adaptive Scalable Texture Compression */
-    /* ASTC HDR vs LDR is determined by the float flag in the channel */
-    /* ASTC block size can be distinguished by texel block size */ 
-    KHR_DF_MODEL_ASTC          = 162U,
-    /* ETC1S is a simplified subset of ETC1 */
-    KHR_DF_MODEL_ETC1S         = 163U,
-    /* PowerVR Texture Compression */
-    KHR_DF_MODEL_PVRTC         = 164U,
-    KHR_DF_MODEL_PVRTC2        = 165U,
-    /* Proprietary formats (ATITC, etc.) should follow */
-    KHR_DF_MODEL_MAX = 0xFFU
-} khr_df_model_e;
-
-/* Definition of channel names for each color model */
-typedef enum _khr_df_model_channels_e {
-    /* Unspecified format with nominal channel numbering */
-    KHR_DF_CHANNEL_UNSPECIFIED_0  = 0U,
-    KHR_DF_CHANNEL_UNSPECIFIED_1  = 1U,
-    KHR_DF_CHANNEL_UNSPECIFIED_2  = 2U,
-    KHR_DF_CHANNEL_UNSPECIFIED_3  = 3U,
-    KHR_DF_CHANNEL_UNSPECIFIED_4  = 4U,
-    KHR_DF_CHANNEL_UNSPECIFIED_5  = 5U,
-    KHR_DF_CHANNEL_UNSPECIFIED_6  = 6U,
-    KHR_DF_CHANNEL_UNSPECIFIED_7  = 7U,
-    KHR_DF_CHANNEL_UNSPECIFIED_8  = 8U,
-    KHR_DF_CHANNEL_UNSPECIFIED_9  = 9U,
-    KHR_DF_CHANNEL_UNSPECIFIED_10 = 10U,
-    KHR_DF_CHANNEL_UNSPECIFIED_11 = 11U,
-    KHR_DF_CHANNEL_UNSPECIFIED_12 = 12U,
-    KHR_DF_CHANNEL_UNSPECIFIED_13 = 13U,
-    KHR_DF_CHANNEL_UNSPECIFIED_14 = 14U,
-    KHR_DF_CHANNEL_UNSPECIFIED_15 = 15U,
-    /* MODEL_RGBSDA - red, green, blue, stencil, depth, alpha */
-    KHR_DF_CHANNEL_RGBSDA_RED     =  0U,
-    KHR_DF_CHANNEL_RGBSDA_R       =  0U,
-    KHR_DF_CHANNEL_RGBSDA_GREEN   =  1U,
-    KHR_DF_CHANNEL_RGBSDA_G       =  1U,
-    KHR_DF_CHANNEL_RGBSDA_BLUE    =  2U,
-    KHR_DF_CHANNEL_RGBSDA_B       =  2U,
-    KHR_DF_CHANNEL_RGBSDA_STENCIL = 13U,
-    KHR_DF_CHANNEL_RGBSDA_S       = 13U,
-    KHR_DF_CHANNEL_RGBSDA_DEPTH   = 14U,
-    KHR_DF_CHANNEL_RGBSDA_D       = 14U,
-    KHR_DF_CHANNEL_RGBSDA_ALPHA   = 15U,
-    KHR_DF_CHANNEL_RGBSDA_A       = 15U,
-    /* MODEL_YUVSDA - luma, Cb, Cr, stencil, depth, alpha */
-    KHR_DF_CHANNEL_YUVSDA_Y       =  0U,
-    KHR_DF_CHANNEL_YUVSDA_CB      =  1U,
-    KHR_DF_CHANNEL_YUVSDA_U       =  1U,
-    KHR_DF_CHANNEL_YUVSDA_CR      =  2U,
-    KHR_DF_CHANNEL_YUVSDA_V       =  2U,
-    KHR_DF_CHANNEL_YUVSDA_STENCIL = 13U,
-    KHR_DF_CHANNEL_YUVSDA_S       = 13U,
-    KHR_DF_CHANNEL_YUVSDA_DEPTH   = 14U,
-    KHR_DF_CHANNEL_YUVSDA_D       = 14U,
-    KHR_DF_CHANNEL_YUVSDA_ALPHA   = 15U,
-    KHR_DF_CHANNEL_YUVSDA_A       = 15U,
-    /* MODEL_YIQSDA - luma, in-phase, quadrature, stencil, depth, alpha */
-    KHR_DF_CHANNEL_YIQSDA_Y       =  0U,
-    KHR_DF_CHANNEL_YIQSDA_I       =  1U,
-    KHR_DF_CHANNEL_YIQSDA_Q       =  2U,
-    KHR_DF_CHANNEL_YIQSDA_STENCIL = 13U,
-    KHR_DF_CHANNEL_YIQSDA_S       = 13U,
-    KHR_DF_CHANNEL_YIQSDA_DEPTH   = 14U,
-    KHR_DF_CHANNEL_YIQSDA_D       = 14U,
-    KHR_DF_CHANNEL_YIQSDA_ALPHA   = 15U,
-    KHR_DF_CHANNEL_YIQSDA_A       = 15U,
-    /* MODEL_LABSDA - CIELAB/L*a*b* luma, red-green, blue-yellow, stencil, depth, alpha */
-    KHR_DF_CHANNEL_LABSDA_L       =  0U,
-    KHR_DF_CHANNEL_LABSDA_A       =  1U,
-    KHR_DF_CHANNEL_LABSDA_B       =  2U,
-    KHR_DF_CHANNEL_LABSDA_STENCIL = 13U,
-    KHR_DF_CHANNEL_LABSDA_S       = 13U,
-    KHR_DF_CHANNEL_LABSDA_DEPTH   = 14U,
-    KHR_DF_CHANNEL_LABSDA_D       = 14U,
-    KHR_DF_CHANNEL_LABSDA_ALPHA   = 15U,
-    /* NOTE: KHR_DF_CHANNEL_LABSDA_A is not a synonym for alpha! */
-    /* MODEL_CMYKA - cyan, magenta, yellow, key/blacK, alpha */
-    KHR_DF_CHANNEL_CMYKSDA_CYAN    =  0U,
-    KHR_DF_CHANNEL_CMYKSDA_C       =  0U,
-    KHR_DF_CHANNEL_CMYKSDA_MAGENTA =  1U,
-    KHR_DF_CHANNEL_CMYKSDA_M       =  1U,
-    KHR_DF_CHANNEL_CMYKSDA_YELLOW  =  2U,
-    KHR_DF_CHANNEL_CMYKSDA_Y       =  2U,
-    KHR_DF_CHANNEL_CMYKSDA_KEY     =  3U,
-    KHR_DF_CHANNEL_CMYKSDA_BLACK   =  3U,
-    KHR_DF_CHANNEL_CMYKSDA_K       =  3U,
-    KHR_DF_CHANNEL_CMYKSDA_ALPHA   = 15U,
-    KHR_DF_CHANNEL_CMYKSDA_A       = 15U,
-    /* MODEL_XYZW - coordinates x, y, z, w */
-    KHR_DF_CHANNEL_XYZW_X = 0U,
-    KHR_DF_CHANNEL_XYZW_Y = 1U,
-    KHR_DF_CHANNEL_XYZW_Z = 2U,
-    KHR_DF_CHANNEL_XYZW_W = 3U,
-    /* MODEL_HSVA_ANG - value (luma), saturation, hue, alpha, angular projection, conical space */
-    KHR_DF_CHANNEL_HSVA_ANG_VALUE      = 0U,
-    KHR_DF_CHANNEL_HSVA_ANG_V          = 0U,
-    KHR_DF_CHANNEL_HSVA_ANG_SATURATION = 1U,
-    KHR_DF_CHANNEL_HSVA_ANG_S          = 1U,
-    KHR_DF_CHANNEL_HSVA_ANG_HUE        = 2U,
-    KHR_DF_CHANNEL_HSVA_ANG_H          = 2U,
-    KHR_DF_CHANNEL_HSVA_ANG_ALPHA      = 15U,
-    KHR_DF_CHANNEL_HSVA_ANG_A          = 15U,
-    /* MODEL_HSLA_ANG - lightness (luma), saturation, hue, alpha, angular projection, double conical space */
-    KHR_DF_CHANNEL_HSLA_ANG_LIGHTNESS  = 0U,
-    KHR_DF_CHANNEL_HSLA_ANG_L          = 0U,
-    KHR_DF_CHANNEL_HSLA_ANG_SATURATION = 1U,
-    KHR_DF_CHANNEL_HSLA_ANG_S          = 1U,
-    KHR_DF_CHANNEL_HSLA_ANG_HUE        = 2U,
-    KHR_DF_CHANNEL_HSLA_ANG_H          = 2U,
-    KHR_DF_CHANNEL_HSLA_ANG_ALPHA      = 15U,
-    KHR_DF_CHANNEL_HSLA_ANG_A          = 15U,
-    /* MODEL_HSVA_HEX - value (luma), saturation, hue, alpha, hexagonal projection, conical space */
-    KHR_DF_CHANNEL_HSVA_HEX_VALUE      = 0U,
-    KHR_DF_CHANNEL_HSVA_HEX_V          = 0U,
-    KHR_DF_CHANNEL_HSVA_HEX_SATURATION = 1U,
-    KHR_DF_CHANNEL_HSVA_HEX_S          = 1U,
-    KHR_DF_CHANNEL_HSVA_HEX_HUE        = 2U,
-    KHR_DF_CHANNEL_HSVA_HEX_H          = 2U,
-    KHR_DF_CHANNEL_HSVA_HEX_ALPHA      = 15U,
-    KHR_DF_CHANNEL_HSVA_HEX_A          = 15U,
-    /* MODEL_HSLA_HEX - lightness (luma), saturation, hue, alpha, hexagonal projection, double conical space */
-    KHR_DF_CHANNEL_HSLA_HEX_LIGHTNESS  = 0U,
-    KHR_DF_CHANNEL_HSLA_HEX_L          = 0U,
-    KHR_DF_CHANNEL_HSLA_HEX_SATURATION = 1U,
-    KHR_DF_CHANNEL_HSLA_HEX_S          = 1U,
-    KHR_DF_CHANNEL_HSLA_HEX_HUE        = 2U,
-    KHR_DF_CHANNEL_HSLA_HEX_H          = 2U,
-    KHR_DF_CHANNEL_HSLA_HEX_ALPHA      = 15U,
-    KHR_DF_CHANNEL_HSLA_HEX_A          = 15U,
-    /* MODEL_YCGCOA - luma, green delta, orange delta, alpha */
-    KHR_DF_CHANNEL_YCGCOA_Y       =  0U,
-    KHR_DF_CHANNEL_YCGCOA_CG      =  1U,
-    KHR_DF_CHANNEL_YCGCOA_CO      =  2U,
-    KHR_DF_CHANNEL_YCGCOA_ALPHA   = 15U,
-    KHR_DF_CHANNEL_YCGCOA_A       = 15U,
-    /* MODEL_CIEXYZ - CIE 1931 X, Y, Z */
-    KHR_DF_CHANNEL_CIEXYZ_X = 0U,
-    KHR_DF_CHANNEL_CIEXYZ_Y = 1U,
-    KHR_DF_CHANNEL_CIEXYZ_Z = 2U,
-    /* MODEL_CIEXYY - CIE 1931 x, y, Y */
-    KHR_DF_CHANNEL_CIEXYY_X        = 0U,
-    KHR_DF_CHANNEL_CIEXYY_YCHROMA  = 1U,
-    KHR_DF_CHANNEL_CIEXYY_YLUMA    = 2U,
-
-    /* Compressed formats */
-    /* MODEL_DXT1A/MODEL_BC1A */
-    KHR_DF_CHANNEL_DXT1A_COLOR = 0U,
-    KHR_DF_CHANNEL_BC1A_COLOR  = 0U,
-    KHR_DF_CHANNEL_DXT1A_ALPHAPRESENT = 1U,
-    KHR_DF_CHANNEL_DXT1A_ALPHA = 1U,
-    KHR_DF_CHANNEL_BC1A_ALPHAPRESENT  = 1U,
-    KHR_DF_CHANNEL_BC1A_ALPHA  = 1U,
-    /* MODEL_DXT2/3/MODEL_BC2 */
-    KHR_DF_CHANNEL_DXT2_COLOR =  0U,
-    KHR_DF_CHANNEL_DXT3_COLOR =  0U,
-    KHR_DF_CHANNEL_BC2_COLOR  =  0U,
-    KHR_DF_CHANNEL_DXT2_ALPHA = 15U,
-    KHR_DF_CHANNEL_DXT3_ALPHA = 15U,
-    KHR_DF_CHANNEL_BC2_ALPHA  = 15U,
-    /* MODEL_DXT4/5/MODEL_BC3 */
-    KHR_DF_CHANNEL_DXT4_COLOR =  0U,
-    KHR_DF_CHANNEL_DXT5_COLOR =  0U,
-    KHR_DF_CHANNEL_BC3_COLOR  =  0U,
-    KHR_DF_CHANNEL_DXT4_ALPHA = 15U,
-    KHR_DF_CHANNEL_DXT5_ALPHA = 15U,
-    KHR_DF_CHANNEL_BC3_ALPHA  = 15U,
-    /* MODEL_BC4 */
-    KHR_DF_CHANNEL_BC4_DATA = 0U,
-    /* MODEL_BC5 */
-    KHR_DF_CHANNEL_BC5_RED   = 0U,
-    KHR_DF_CHANNEL_BC5_R     = 0U,
-    KHR_DF_CHANNEL_BC5_GREEN = 1U,
-    KHR_DF_CHANNEL_BC5_G     = 1U,
-    /* MODEL_BC6H */
-    KHR_DF_CHANNEL_BC6H_COLOR = 0U,
-    KHR_DF_CHANNEL_BC6H_DATA = 0U,
-    /* MODEL_BC7 */
-    KHR_DF_CHANNEL_BC7_DATA = 0U,
-    KHR_DF_CHANNEL_BC7_COLOR = 0U,
-    /* MODEL_ETC1 */
-    KHR_DF_CHANNEL_ETC1_DATA  = 0U,
-    KHR_DF_CHANNEL_ETC1_COLOR = 0U,
-    /* MODEL_ETC2 */
-    KHR_DF_CHANNEL_ETC2_RED   = 0U,
-    KHR_DF_CHANNEL_ETC2_R     = 0U,
-    KHR_DF_CHANNEL_ETC2_GREEN = 1U,
-    KHR_DF_CHANNEL_ETC2_G     = 1U,
-    KHR_DF_CHANNEL_ETC2_COLOR = 2U,
-    KHR_DF_CHANNEL_ETC2_ALPHA = 15U,
-    KHR_DF_CHANNEL_ETC2_A     = 15U,
-    /* MODEL_ASTC */
-    KHR_DF_CHANNEL_ASTC_DATA  = 0U,
-    /* MODEL_ETC1S */
-    KHR_DF_CHANNEL_ETC1S_DATA  = 0U,
-    KHR_DF_CHANNEL_ETC1S_COLOR = 0U,
-    /* MODEL_PVRTC */
-    KHR_DF_CHANNEL_PVRTC_DATA  = 0U,
-    KHR_DF_CHANNEL_PVRTC_COLOR = 0U,
-    /* MODEL_PVRTC2 */
-    KHR_DF_CHANNEL_PVRTC2_DATA  = 0U,
-    KHR_DF_CHANNEL_PVRTC2_COLOR = 0U,
-
-    /* Common channel names shared by multiple formats */
-    KHR_DF_CHANNEL_COMMON_LUMA    =  0U,
-    KHR_DF_CHANNEL_COMMON_L       =  0U,
-    KHR_DF_CHANNEL_COMMON_STENCIL = 13U,
-    KHR_DF_CHANNEL_COMMON_S       = 13U,
-    KHR_DF_CHANNEL_COMMON_DEPTH   = 14U,
-    KHR_DF_CHANNEL_COMMON_D       = 14U,
-    KHR_DF_CHANNEL_COMMON_ALPHA   = 15U,
-    KHR_DF_CHANNEL_COMMON_A       = 15U
-} khr_df_model_channels_e;
-
-/* Definition of the primary colors in color coordinates.
-   This is implicitly responsible for defining the conversion
-   between RGB an YUV color spaces.
-   LAB and related absolute color models should use
-   KHR_DF_PRIMARIES_CIEXYZ. */
-typedef enum _khr_df_primaries_e {
-    /* No color primaries defined */
-    KHR_DF_PRIMARIES_UNSPECIFIED = 0U,
-    /* Color primaries of ITU-R BT.709 and sRGB */
-    KHR_DF_PRIMARIES_BT709       = 1U,
-    /* Synonym for KHR_DF_PRIMARIES_BT709 */
-    KHR_DF_PRIMARIES_SRGB        = 1U,
-    /* Color primaries of ITU-R BT.601 (625-line EBU variant) */
-    KHR_DF_PRIMARIES_BT601_EBU   = 2U,
-    /* Color primaries of ITU-R BT.601 (525-line SMPTE C variant) */
-    KHR_DF_PRIMARIES_BT601_SMPTE = 3U,
-    /* Color primaries of ITU-R BT.2020 */
-    KHR_DF_PRIMARIES_BT2020      = 4U,
-    /* CIE theoretical color coordinate space */
-    KHR_DF_PRIMARIES_CIEXYZ      = 5U,
-    /* Academy Color Encoding System primaries */
-    KHR_DF_PRIMARIES_ACES        = 6U,
-    /* Color primaries of ACEScc */
-    KHR_DF_PRIMARIES_ACESCC      = 7U,
-    /* Legacy NTSC 1953 primaries */
-    KHR_DF_PRIMARIES_NTSC1953    = 8U,
-    /* Legacy PAL 525-line primaries */
-    KHR_DF_PRIMARIES_PAL525      = 9U,
-    /* Color primaries of Display P3 */
-    KHR_DF_PRIMARIES_DISPLAYP3   = 10U,
-    /* Color primaries of Adobe RGB (1998) */
-    KHR_DF_PRIMARIES_ADOBERGB    = 11U,
-    KHR_DF_PRIMARIES_MAX         = 0xFFU
-} khr_df_primaries_e;
-
-/* Definition of the optical to digital transfer function
-   ("gamma correction"). Most transfer functions are not a pure
-   power function and also include a linear element.
-   LAB and related absolute color representations should use
-   KHR_DF_TRANSFER_UNSPECIFIED. */
-typedef enum _khr_df_transfer_e {
-    /* No transfer function defined */
-    KHR_DF_TRANSFER_UNSPECIFIED = 0U,
-    /* Linear transfer function (value proportional to intensity) */
-    KHR_DF_TRANSFER_LINEAR      = 1U,
-    /* Perceptually-linear transfer function of sRGH (~2.4) */
-    KHR_DF_TRANSFER_SRGB        = 2U,
-    /* Perceptually-linear transfer function of ITU non-HDR specifications (~1/.45) */
-    KHR_DF_TRANSFER_ITU         = 3U,
-    /* SMTPE170M (digital NTSC) defines an alias for the ITU transfer function (~1/.45) */
-    KHR_DF_TRANSFER_SMTPE170M   = 3U,
-    /* Perceptually-linear gamma function of original NTSC (simple 2.2 gamma) */
-    KHR_DF_TRANSFER_NTSC        = 4U,
-    /* Sony S-log used by Sony video cameras */
-    KHR_DF_TRANSFER_SLOG        = 5U,
-    /* Sony S-log 2 used by Sony video cameras */
-    KHR_DF_TRANSFER_SLOG2       = 6U,
-    /* ITU BT.1886 EOTF */
-    KHR_DF_TRANSFER_BT1886      = 7U,
-    /* ITU BT.2100 HLG OETF */
-    KHR_DF_TRANSFER_HLG_OETF    = 8U,
-    /* ITU BT.2100 HLG EOTF */
-    KHR_DF_TRANSFER_HLG_EOTF    = 9U,
-    /* ITU BT.2100 PQ EOTF */
-    KHR_DF_TRANSFER_PQ_EOTF     = 10U,
-    /* ITU BT.2100 PQ OETF */
-    KHR_DF_TRANSFER_PQ_OETF     = 11U,
-    /* DCI P3 transfer function */
-    KHR_DF_TRANSFER_DCIP3       = 12U,
-    /* Legacy PAL OETF */
-    KHR_DF_TRANSFER_PAL_OETF    = 13U,
-    /* Legacy PAL 625-line EOTF */
-    KHR_DF_TRANSFER_PAL625_EOTF = 14U,
-    /* Legacy ST240 transfer function */
-    KHR_DF_TRANSFER_ST240       = 15U,
-    /* ACEScc transfer function */
-    KHR_DF_TRANSFER_ACESCC      = 16U,
-    /* ACEScct transfer function */
-    KHR_DF_TRANSFER_ACESCCT     = 17U,
-    /* Adobe RGB (1998) transfer function */
-    KHR_DF_TRANSFER_ADOBERGB    = 18U,
-    KHR_DF_TRANSFER_MAX         = 0xFFU
-} khr_df_transfer_e;
-
-typedef enum _khr_df_flags_e {
-    KHR_DF_FLAG_ALPHA_STRAIGHT      = 0U,
-    KHR_DF_FLAG_ALPHA_PREMULTIPLIED = 1U
-} khr_df_flags_e;
-
-typedef enum _khr_df_sample_datatype_qualifiers_e {
-    KHR_DF_SAMPLE_DATATYPE_LINEAR = 1U << 4U,
-    KHR_DF_SAMPLE_DATATYPE_EXPONENT = 1U << 5U,
-    KHR_DF_SAMPLE_DATATYPE_SIGNED = 1U << 6U,
-    KHR_DF_SAMPLE_DATATYPE_FLOAT = 1U << 7U
-} khr_df_sample_datatype_qualifiers_e;
-
-#endif

3rdparty/meshoptimizer/tools/lodviewer.cpp

@@ -1,705 +0,0 @@
-#define _CRT_SECURE_NO_WARNINGS
-
-#include "../src/meshoptimizer.h"
-#include "fast_obj.h"
-#include "cgltf.h"
-
-#include <algorithm>
-#include <cmath>
-#include <cstdio>
-#include <ctime>
-#include <vector>
-
-#include <GLFW/glfw3.h>
-
-#ifdef _WIN32
-#pragma comment(lib, "opengl32.lib")
-#endif
-
-extern unsigned char* meshopt_simplifyDebugKind;
-extern unsigned int* meshopt_simplifyDebugLoop;
-
-#ifndef TRACE
-unsigned char* meshopt_simplifyDebugKind;
-unsigned int* meshopt_simplifyDebugLoop;
-#endif
-
-struct Options
-{
-	bool wireframe;
-	enum
-	{
-		Mode_Default,
-		Mode_Texture,
-		Mode_Normals,
-		Mode_UV,
-		Mode_Kind,
-	} mode;
-};
-
-struct Vertex
-{
-	float px, py, pz;
-	float nx, ny, nz;
-	float tx, ty;
-};
-
-struct Mesh
-{
-	std::vector<Vertex> vertices;
-	std::vector<unsigned int> indices;
-
-	bool hasnormals;
-	bool hastexture;
-
-	// TODO: this is debug only visualization and will go away at some point
-	std::vector<unsigned char> kinds;
-	std::vector<unsigned int> loop;
-};
-
-Mesh parseObj(const char* path)
-{
-	fastObjMesh* obj = fast_obj_read(path);
-	if (!obj)
-	{
-		printf("Error loading %s: file not found\n", path);
-		return Mesh();
-	}
-
-	size_t total_indices = 0;
-
-	for (unsigned int i = 0; i < obj->face_count; ++i)
-		total_indices += 3 * (obj->face_vertices[i] - 2);
-
-	std::vector<Vertex> vertices(total_indices);
-
-	size_t vertex_offset = 0;
-	size_t index_offset = 0;
-
-	bool hasnormals = false;
-	bool hastexture = false;
-
-	for (unsigned int i = 0; i < obj->face_count; ++i)
-	{
-		for (unsigned int j = 0; j < obj->face_vertices[i]; ++j)
-		{
-			fastObjIndex gi = obj->indices[index_offset + j];
-
-			Vertex v =
-			{
-				obj->positions[gi.p * 3 + 0],
-				obj->positions[gi.p * 3 + 1],
-				obj->positions[gi.p * 3 + 2],
-				obj->normals[gi.n * 3 + 0],
-				obj->normals[gi.n * 3 + 1],
-				obj->normals[gi.n * 3 + 2],
-				obj->texcoords[gi.t * 2 + 0],
-				obj->texcoords[gi.t * 2 + 1],
-			};
-
-			hasnormals |= (gi.n > 0);
-			hastexture |= (gi.t > 0);
-
-			// triangulate polygon on the fly; offset-3 is always the first polygon vertex
-			if (j >= 3)
-			{
-				vertices[vertex_offset + 0] = vertices[vertex_offset - 3];
-				vertices[vertex_offset + 1] = vertices[vertex_offset - 1];
-				vertex_offset += 2;
-			}
-
-			vertices[vertex_offset] = v;
-			vertex_offset++;
-		}
-
-		index_offset += obj->face_vertices[i];
-	}
-
-	fast_obj_destroy(obj);
-
-	Mesh result;
-
-	std::vector<unsigned int> remap(total_indices);
-	size_t total_vertices = meshopt_generateVertexRemap(&remap[0], NULL, total_indices, &vertices[0], total_indices, sizeof(Vertex));
-
-	result.indices.resize(total_indices);
-	meshopt_remapIndexBuffer(&result.indices[0], NULL, total_indices, &remap[0]);
-
-	result.vertices.resize(total_vertices);
-	meshopt_remapVertexBuffer(&result.vertices[0], &vertices[0], total_indices, sizeof(Vertex), &remap[0]);
-
-	result.hasnormals = hasnormals;
-	result.hastexture = hastexture;
-
-	return result;
-}
-
-cgltf_accessor* getAccessor(const cgltf_attribute* attributes, size_t attribute_count, cgltf_attribute_type type, int index = 0)
-{
-	for (size_t i = 0; i < attribute_count; ++i)
-		if (attributes[i].type == type && attributes[i].index == index)
-			return attributes[i].data;
-
-	return 0;
-}
-
-Mesh parseGltf(const char* path)
-{
-	cgltf_options options = {};
-	cgltf_data* data = 0;
-	cgltf_result res = cgltf_parse_file(&options, path, &data);
-
-	if (res != cgltf_result_success)
-	{
-		return Mesh();
-	}
-
-	res = cgltf_load_buffers(&options, data, path);
-	if (res != cgltf_result_success)
-	{
-		cgltf_free(data);
-		return Mesh();
-	}
-
-	res = cgltf_validate(data);
-	if (res != cgltf_result_success)
-	{
-		cgltf_free(data);
-		return Mesh();
-	}
-
-	size_t total_vertices = 0;
-	size_t total_indices = 0;
-
-	for (size_t ni = 0; ni < data->nodes_count; ++ni)
-	{
-		if (!data->nodes[ni].mesh)
-			continue;
-
-		const cgltf_mesh& mesh = *data->nodes[ni].mesh;
-
-		for (size_t pi = 0; pi < mesh.primitives_count; ++pi)
-		{
-			const cgltf_primitive& primitive = mesh.primitives[pi];
-
-			cgltf_accessor* ai = primitive.indices;
-			cgltf_accessor* ap = getAccessor(primitive.attributes, primitive.attributes_count, cgltf_attribute_type_position);
-
-			if (!ai || !ap)
-				continue;
-
-			total_vertices += ap->count;
-			total_indices += ai->count;
-		}
-	}
-
-	Mesh result;
-	result.vertices.resize(total_vertices);
-	result.indices.resize(total_indices);
-
-	size_t vertex_offset = 0;
-	size_t index_offset = 0;
-
-	bool hasnormals = false;
-	bool hastexture = false;
-
-	for (size_t ni = 0; ni < data->nodes_count; ++ni)
-	{
-		if (!data->nodes[ni].mesh)
-			continue;
-
-		const cgltf_mesh& mesh = *data->nodes[ni].mesh;
-
-		float transform[16];
-		cgltf_node_transform_world(&data->nodes[ni], transform);
-
-		for (size_t pi = 0; pi < mesh.primitives_count; ++pi)
-		{
-			const cgltf_primitive& primitive = mesh.primitives[pi];
-
-			cgltf_accessor* ai = primitive.indices;
-			cgltf_accessor* ap = getAccessor(primitive.attributes, primitive.attributes_count, cgltf_attribute_type_position);
-
-			if (!ai || !ap)
-				continue;
-
-			for (size_t i = 0; i < ai->count; ++i)
-				result.indices[index_offset + i] = unsigned(vertex_offset + cgltf_accessor_read_index(ai, i));
-
-			{
-				for (size_t i = 0; i < ap->count; ++i)
-				{
-					float ptr[3];
-					cgltf_accessor_read_float(ap, i, ptr, 3);
-
-					result.vertices[vertex_offset + i].px = ptr[0] * transform[0] + ptr[1] * transform[4] + ptr[2] * transform[8] + transform[12];
-					result.vertices[vertex_offset + i].py = ptr[0] * transform[1] + ptr[1] * transform[5] + ptr[2] * transform[9] + transform[13];
-					result.vertices[vertex_offset + i].pz = ptr[0] * transform[2] + ptr[1] * transform[6] + ptr[2] * transform[10] + transform[14];
-				}
-			}
-
-			if (cgltf_accessor* an = getAccessor(primitive.attributes, primitive.attributes_count, cgltf_attribute_type_normal))
-			{
-				for (size_t i = 0; i < ap->count; ++i)
-				{
-					float ptr[3];
-					cgltf_accessor_read_float(an, i, ptr, 3);
-
-					result.vertices[vertex_offset + i].nx = ptr[0] * transform[0] + ptr[1] * transform[4] + ptr[2] * transform[8];
-					result.vertices[vertex_offset + i].ny = ptr[0] * transform[1] + ptr[1] * transform[5] + ptr[2] * transform[9];
-					result.vertices[vertex_offset + i].nz = ptr[0] * transform[2] + ptr[1] * transform[6] + ptr[2] * transform[10];
-				}
-
-				hasnormals = true;
-			}
-
-			if (cgltf_accessor* at = getAccessor(primitive.attributes, primitive.attributes_count, cgltf_attribute_type_texcoord))
-			{
-				for (size_t i = 0; i < ap->count; ++i)
-				{
-					float ptr[2];
-					cgltf_accessor_read_float(at, i, ptr, 2);
-
-					result.vertices[vertex_offset + i].tx = ptr[0];
-					result.vertices[vertex_offset + i].ty = ptr[1];
-				}
-
-				hastexture = true;
-			}
-
-			vertex_offset += ap->count;
-			index_offset += ai->count;
-		}
-	}
-
-	result.hasnormals = hasnormals;
-	result.hastexture = hastexture;
-
-	std::vector<unsigned int> remap(total_indices);
-	size_t unique_vertices = meshopt_generateVertexRemap(&remap[0], &result.indices[0], total_indices, &result.vertices[0], total_vertices, sizeof(Vertex));
-
-	meshopt_remapIndexBuffer(&result.indices[0], &result.indices[0], total_indices, &remap[0]);
-	meshopt_remapVertexBuffer(&result.vertices[0], &result.vertices[0], total_vertices, sizeof(Vertex), &remap[0]);
-
-	result.vertices.resize(unique_vertices);
-
-	cgltf_free(data);
-
-	return result;
-}
-
-Mesh loadMesh(const char* path)
-{
-	if (strstr(path, ".obj"))
-		return parseObj(path);
-
-	if (strstr(path, ".gltf") || strstr(path, ".glb"))
-		return parseGltf(path);
-
-	return Mesh();
-}
-
-bool saveObj(const Mesh& mesh, const char* path)
-{
-	std::vector<Vertex> verts = mesh.vertices;
-	std::vector<unsigned int> tris = mesh.indices;
-	size_t vertcount = meshopt_optimizeVertexFetch(verts.data(), tris.data(), tris.size(), verts.data(), verts.size(), sizeof(Vertex));
-
-	FILE* obj = fopen(path, "w");
-	if (!obj)
-		return false;
-
-	for (size_t i = 0; i < vertcount; ++i)
-	{
-		fprintf(obj, "v %f %f %f\n", verts[i].px, verts[i].py, verts[i].pz);
-
-		if (mesh.hasnormals)
-			fprintf(obj, "vn %f %f %f\n", verts[i].nx, verts[i].ny, verts[i].nz);
-
-		if (mesh.hastexture)
-			fprintf(obj, "vt %f %f %f\n", verts[i].tx, verts[i].ty, 0.f);
-	}
-
-	for (size_t i = 0; i < tris.size(); i += 3)
-	{
-		unsigned int i0 = tris[i + 0] + 1;
-		unsigned int i1 = tris[i + 1] + 1;
-		unsigned int i2 = tris[i + 2] + 1;
-
-		if (mesh.hasnormals && mesh.hastexture)
-			fprintf(obj, "f %d/%d/%d %d/%d/%d %d/%d/%d\n", i0, i0, i0, i1, i1, i1, i2, i2, i2);
-		else if (mesh.hasnormals && !mesh.hastexture)
-			fprintf(obj, "f %d//%d %d//%d %d//%d\n", i0, i0, i1, i1, i2, i2);
-		else if (!mesh.hasnormals && mesh.hastexture)
-			fprintf(obj, "f %d/%d %d/%d %d/%d\n", i0, i0, i1, i1, i2, i2);
-		else
-			fprintf(obj, "f %d %d %dd\n", i0, i1, i2);
-	}
-
-	fclose(obj);
-
-	return true;
-}
-
-Mesh optimize(const Mesh& mesh, int lod)
-{
-	float threshold = powf(0.5f, float(lod));
-	size_t target_index_count = size_t(mesh.indices.size() * threshold);
-	float target_error = 1e-2f;
-
-	Mesh result = mesh;
-	result.kinds.resize(result.vertices.size());
-	result.loop.resize(result.vertices.size());
-	meshopt_simplifyDebugKind = &result.kinds[0];
-	meshopt_simplifyDebugLoop = &result.loop[0];
-	result.indices.resize(meshopt_simplify(&result.indices[0], &result.indices[0], mesh.indices.size(), &mesh.vertices[0].px, mesh.vertices.size(), sizeof(Vertex), target_index_count, target_error));
-
-	return result;
-}
-
-void computeNormals(Mesh& mesh)
-{
-	if (mesh.hasnormals)
-		return;
-
-	for (size_t i = 0; i < mesh.vertices.size(); ++i)
-	{
-		Vertex& v = mesh.vertices[i];
-
-		v.nx = v.ny = v.nz = 0.f;
-	}
-
-	for (size_t i = 0; i < mesh.indices.size(); i += 3)
-	{
-		Vertex& v0 = mesh.vertices[mesh.indices[i + 0]];
-		Vertex& v1 = mesh.vertices[mesh.indices[i + 1]];
-		Vertex& v2 = mesh.vertices[mesh.indices[i + 2]];
-
-		float v10[3] = {v1.px - v0.px, v1.py - v0.py, v1.pz - v0.pz};
-		float v20[3] = {v2.px - v0.px, v2.py - v0.py, v2.pz - v0.pz};
-
-		float normalx = v10[1] * v20[2] - v10[2] * v20[1];
-		float normaly = v10[2] * v20[0] - v10[0] * v20[2];
-		float normalz = v10[0] * v20[1] - v10[1] * v20[0];
-
-		v0.nx += normalx;
-		v0.ny += normaly;
-		v0.nz += normalz;
-
-		v1.nx += normalx;
-		v1.ny += normaly;
-		v1.nz += normalz;
-
-		v2.nx += normalx;
-		v2.ny += normaly;
-		v2.nz += normalz;
-	}
-
-	for (size_t i = 0; i < mesh.vertices.size(); ++i)
-	{
-		Vertex& v = mesh.vertices[i];
-
-		float nl = sqrtf(v.nx * v.nx + v.ny * v.ny + v.nz * v.nz);
-		float ns = (nl == 0.f) ? 0.f : 1.f / nl;
-
-		v.nx *= ns;
-		v.ny *= ns;
-		v.nz *= ns;
-	}
-}
-
-void display(int x, int y, int width, int height, const Mesh& mesh, const Options& options)
-{
-	glViewport(x, y, width, height);
-	glEnable(GL_DEPTH_TEST);
-	glDepthFunc(GL_LESS);
-	glDepthMask(GL_TRUE);
-
-	glMatrixMode(GL_MODELVIEW);
-	glLoadIdentity();
-	glRotatef(0.f, 0.f, 1.f, 0.f);
-
-	glPolygonMode(GL_FRONT_AND_BACK, options.wireframe ? GL_LINE : GL_FILL);
-
-	float centerx = 0;
-	float centery = 0;
-	float centerz = 0;
-	float centeru = 0;
-	float centerv = 0;
-
-	for (size_t i = 0; i < mesh.vertices.size(); ++i)
-	{
-		const Vertex& v = mesh.vertices[i];
-
-		centerx += v.px;
-		centery += v.py;
-		centerz += v.pz;
-		centeru += v.tx;
-		centerv += v.ty;
-	}
-
-	centerx /= float(mesh.vertices.size());
-	centery /= float(mesh.vertices.size());
-	centerz /= float(mesh.vertices.size());
-	centeru /= float(mesh.vertices.size());
-	centerv /= float(mesh.vertices.size());
-
-	float extent = 0;
-	float extentuv = 0;
-
-	for (size_t i = 0; i < mesh.vertices.size(); ++i)
-	{
-		const Vertex& v = mesh.vertices[i];
-
-		extent = std::max(extent, fabsf(v.px - centerx));
-		extent = std::max(extent, fabsf(v.py - centery));
-		extent = std::max(extent, fabsf(v.pz - centerz));
-		extentuv = std::max(extentuv, fabsf(v.tx - centeru));
-		extentuv = std::max(extentuv, fabsf(v.ty - centerv));
-	}
-
-	extent *= 1.1f;
-	extentuv *= 1.1f;
-
-	float scalex = width > height ? float(height) / float(width) : 1;
-	float scaley = height > width ? float(width) / float(height) : 1;
-
-	glBegin(GL_TRIANGLES);
-
-	for (size_t i = 0; i < mesh.indices.size(); ++i)
-	{
-		const Vertex& v = mesh.vertices[mesh.indices[i]];
-
-		float intensity = -(v.pz - centerz) / extent * 0.5f + 0.5f;
-
-		switch (options.mode)
-		{
-		case Options::Mode_UV:
-			glColor3f(intensity, intensity, intensity);
-			glVertex3f((v.tx - centeru) / extentuv * scalex, (v.ty - centerv) / extentuv * scaley, 0);
-			break;
-
-		case Options::Mode_Texture:
-			glColor3f(v.tx - floorf(v.tx), v.ty - floorf(v.ty), 0.5f);
-			glVertex3f((v.px - centerx) / extent * scalex, (v.py - centery) / extent * scaley, (v.pz - centerz) / extent);
-			break;
-
-		case Options::Mode_Normals:
-			glColor3f(v.nx * 0.5f + 0.5f, v.ny * 0.5f + 0.5f, v.nz * 0.5f + 0.5f);
-			glVertex3f((v.px - centerx) / extent * scalex, (v.py - centery) / extent * scaley, (v.pz - centerz) / extent);
-			break;
-
-		default:
-			glColor3f(intensity, intensity, intensity);
-			glVertex3f((v.px - centerx) / extent * scalex, (v.py - centery) / extent * scaley, (v.pz - centerz) / extent);
-		}
-	}
-
-	glEnd();
-
-	float zbias = 1e-3f;
-
-	if (options.mode == Options::Mode_Kind && !mesh.kinds.empty() && !mesh.loop.empty())
-	{
-		glLineWidth(1);
-
-		glBegin(GL_LINES);
-
-		for (size_t i = 0; i < mesh.indices.size(); ++i)
-		{
-			unsigned int a = mesh.indices[i];
-			unsigned int b = mesh.loop[a];
-
-			if (b != ~0u)
-			{
-				const Vertex& v0 = mesh.vertices[a];
-				const Vertex& v1 = mesh.vertices[b];
-
-				unsigned char kind = mesh.kinds[a];
-
-				glColor3f(kind == 0 || kind == 4, kind == 0 || kind == 2 || kind == 3, kind == 0 || kind == 1 || kind == 3);
-				glVertex3f((v0.px - centerx) / extent * scalex, (v0.py - centery) / extent * scaley, (v0.pz - centerz) / extent - zbias);
-				glVertex3f((v1.px - centerx) / extent * scalex, (v1.py - centery) / extent * scaley, (v1.pz - centerz) / extent - zbias);
-			}
-		}
-
-		glEnd();
-
-		glPointSize(3);
-
-		glBegin(GL_POINTS);
-
-		for (size_t i = 0; i < mesh.indices.size(); ++i)
-		{
-			const Vertex& v = mesh.vertices[mesh.indices[i]];
-			unsigned char kind = mesh.kinds[mesh.indices[i]];
-
-			if (kind != 0)
-			{
-				glColor3f(kind == 0 || kind == 4, kind == 0 || kind == 2 || kind == 3, kind == 0 || kind == 1 || kind == 3);
-				glVertex3f((v.px - centerx) / extent * scalex, (v.py - centery) / extent * scaley, (v.pz - centerz) / extent - zbias * 2);
-			}
-		}
-
-		glEnd();
-	}
-}
-
-void stats(GLFWwindow* window, const char* path, unsigned int triangles, int lod, double time)
-{
-	char title[256];
-	snprintf(title, sizeof(title), "%s: LOD %d - %d triangles (%.1f msec)", path, lod, triangles, time * 1000);
-
-	glfwSetWindowTitle(window, title);
-}
-
-struct File
-{
-	Mesh basemesh;
-	Mesh lodmesh;
-	const char* path;
-};
-
-std::vector<File> files;
-Options options;
-bool redraw;
-
-void keyhandler(GLFWwindow* window, int key, int scancode, int action, int mods)
-{
-	if (action == GLFW_PRESS)
-	{
-		if (key == GLFW_KEY_W)
-		{
-			options.wireframe = !options.wireframe;
-			redraw = true;
-		}
-		else if (key == GLFW_KEY_T)
-		{
-			options.mode = options.mode == Options::Mode_Texture ? Options::Mode_Default : Options::Mode_Texture;
-			redraw = true;
-		}
-		else if (key == GLFW_KEY_N)
-		{
-			options.mode = options.mode == Options::Mode_Normals ? Options::Mode_Default : Options::Mode_Normals;
-			redraw = true;
-		}
-		else if (key == GLFW_KEY_U)
-		{
-			options.mode = options.mode == Options::Mode_UV ? Options::Mode_Default : Options::Mode_UV;
-			redraw = true;
-		}
-		else if (key == GLFW_KEY_K)
-		{
-			options.mode = options.mode == Options::Mode_Kind ? Options::Mode_Default : Options::Mode_Kind;
-			redraw = true;
-		}
-		else if (key >= GLFW_KEY_0 && key <= GLFW_KEY_9)
-		{
-			int lod = int(key - GLFW_KEY_0);
-
-			unsigned int triangles = 0;
-
-			clock_t start = clock();
-			for (auto& f : files)
-			{
-				f.lodmesh = optimize(f.basemesh, lod);
-				triangles += unsigned(f.lodmesh.indices.size() / 3);
-			}
-			clock_t end = clock();
-
-			stats(window, files[0].path, triangles, lod, double(end - start) / CLOCKS_PER_SEC);
-			redraw = true;
-		}
-		else if (key == GLFW_KEY_S)
-		{
-			int i = 0;
-
-			for (auto& f : files)
-			{
-				char path[32];
-				sprintf(path, "result%d.obj", i);
-
-				saveObj(f.lodmesh, path);
-
-				printf("Saved LOD of %s to %s\n", f.path, path);
-			}
-		}
-	}
-}
-
-void sizehandler(GLFWwindow* window, int width, int height)
-{
-	redraw = true;
-}
-
-int main(int argc, char** argv)
-{
-	if (argc <= 1)
-	{
-		printf("Usage: %s [.obj files]\n", argv[0]);
-		return 0;
-	}
-
-	unsigned int basetriangles = 0;
-
-	for (int i = 1; i < argc; ++i)
-	{
-		files.emplace_back();
-		File& f = files.back();
-
-		f.path = argv[i];
-		f.basemesh = loadMesh(f.path);
-		f.lodmesh = optimize(f.basemesh, 0);
-
-		basetriangles += unsigned(f.basemesh.indices.size() / 3);
-	}
-
-	glfwInit();
-
-	GLFWwindow* window = glfwCreateWindow(640, 480, "Simple example", NULL, NULL);
-	glfwMakeContextCurrent(window);
-
-	stats(window, files[0].path, basetriangles, 0, 0);
-
-	glfwSetKeyCallback(window, keyhandler);
-	glfwSetWindowSizeCallback(window, sizehandler);
-
-	redraw = true;
-
-	while (!glfwWindowShouldClose(window))
-	{
-		if (redraw)
-		{
-			redraw = false;
-
-			int width, height;
-			glfwGetFramebufferSize(window, &width, &height);
-
-			glViewport(0, 0, width, height);
-			glClearDepth(1.f);
-			glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-			int cols = int(ceil(sqrt(double(files.size()))));
-			int rows = int(ceil(double(files.size()) / cols));
-
-			int tilew = width / cols;
-			int tileh = height / rows;
-
-			for (size_t i = 0; i < files.size(); ++i)
-			{
-				File& f = files[i];
-				int x = int(i) % cols;
-				int y = int(i) / cols;
-
-				if (options.mode == Options::Mode_Normals)
-					computeNormals(f.lodmesh);
-
-				display(x * tilew, y * tileh, tilew, tileh, f.lodmesh, options);
-			}
-
-			glfwSwapBuffers(window);
-		}
-
-		glfwWaitEvents();
-	}
-}

3rdparty/meshoptimizer/tools/meshloader.cpp

@@ -1,9 +0,0 @@
-#ifndef _CRT_SECURE_NO_WARNINGS
-#define _CRT_SECURE_NO_WARNINGS
-#endif
-
-#define CGLTF_IMPLEMENTATION
-#include "cgltf.h"
-
-#define FAST_OBJ_IMPLEMENTATION
-#include "fast_obj.h"

3rdparty/meshoptimizer/tools/vcachetester.cpp

@@ -1,509 +0,0 @@
-#ifdef _WIN32
-#include <assert.h>
-#include <d3d11.h>
-#include <d3dcompiler.h>
-#include <stdio.h>
-
-#include <cassert>
-#include <cmath>
-
-#include <algorithm>
-#include <vector>
-
-#include "../src/meshoptimizer.h"
-#include "fast_obj.h"
-
-#pragma comment(lib, "d3d11.lib")
-#pragma comment(lib, "d3dcompiler.lib")
-#pragma comment(lib, "dxgi.lib")
-
-void stripGen(std::vector<unsigned int>& indices, int x0, int x1, int y0, int y1, int width, bool prefetch)
-{
-	if (prefetch)
-	{
-		for (int x = x0; x < x1; x++)
-		{
-			indices.push_back(x + 0);
-			indices.push_back(x + 0);
-			indices.push_back(x + 1);
-		}
-	}
-
-	for (int y = y0; y < y1; y++)
-	{
-		for (int x = x0; x < x1; x++)
-		{
-			indices.push_back((width + 1) * (y + 0) + (x + 0));
-			indices.push_back((width + 1) * (y + 1) + (x + 0));
-			indices.push_back((width + 1) * (y + 0) + (x + 1));
-
-			indices.push_back((width + 1) * (y + 0) + (x + 1));
-			indices.push_back((width + 1) * (y + 1) + (x + 0));
-			indices.push_back((width + 1) * (y + 1) + (x + 1));
-		}
-	}
-}
-
-void gridGen(std::vector<unsigned int>& indices, int x0, int x1, int y0, int y1, int width, int cacheSize, bool prefetch)
-{
-	if (x1 - x0 + 1 < cacheSize)
-	{
-		bool prefetchStrip = 2 * (x1 - x0) + 1 > cacheSize && prefetch;
-
-		stripGen(indices, x0, x1, y0, y1, width, prefetchStrip);
-	}
-	else
-	{
-		int xm = x0 + cacheSize - 2;
-		gridGen(indices, x0, xm, y0, y1, width, cacheSize, prefetch);
-		gridGen(indices, xm, x1, y0, y1, width, cacheSize, prefetch);
-	}
-}
-
-unsigned int queryVSInvocations(ID3D11Device* device, ID3D11DeviceContext* context, const unsigned int* indices, size_t index_count)
-{
-	if (index_count == 0)
-		return 0;
-
-	ID3D11Buffer* ib = 0;
-
-	{
-		D3D11_BUFFER_DESC bd = {};
-
-		bd.Usage = D3D11_USAGE_DYNAMIC;
-		bd.ByteWidth = index_count * 4;
-		bd.BindFlags = D3D11_BIND_INDEX_BUFFER;
-		bd.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
-
-		device->CreateBuffer(&bd, 0, &ib);
-
-		D3D11_MAPPED_SUBRESOURCE ms;
-		context->Map(ib, 0, D3D11_MAP_WRITE_DISCARD, 0, &ms);
-		memcpy(ms.pData, indices, index_count * 4);
-		context->Unmap(ib, 0);
-	}
-
-	context->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
-	context->IASetIndexBuffer(ib, DXGI_FORMAT_R32_UINT, 0);
-
-	D3D11_QUERY_DESC qdesc = {D3D11_QUERY_PIPELINE_STATISTICS};
-	ID3D11Query* query = 0;
-	device->CreateQuery(&qdesc, &query);
-
-	context->Begin(query);
-	context->DrawIndexed(index_count, 0, 0);
-	context->End(query);
-
-	D3D11_QUERY_DATA_PIPELINE_STATISTICS stats = {};
-	while (S_FALSE == context->GetData(query, &stats, sizeof(stats), 0))
-		;
-
-	query->Release();
-	ib->Release();
-
-	assert(stats.IAVertices == index_count);
-
-	return stats.VSInvocations;
-}
-
-void setupShaders(ID3D11Device* device, ID3D11DeviceContext* context)
-{
-	// load and compile the two shaders
-	const char* shaders =
-	    "#define ATTRIBUTES 5\n"
-	    "struct Foo { float4 v[ATTRIBUTES]; };"
-	    "float4 VS(uint index: SV_VertexId, out Foo foo: FOO): SV_Position { uint i = index % 3; [unroll] for (int j = 0; j < ATTRIBUTES; j++) foo.v[j] = j; return float4(i != 0, i != 2, 0, 1); }"
-	    "float4 PS(Foo foo: FOO): SV_Target { float4 result = 0; [unroll] for (int j = 0; j < ATTRIBUTES; j++) result += foo.v[j]; return result; }";
-
-	ID3DBlob* vsblob = 0;
-	ID3DBlob* psblob = 0;
-	D3DCompile(shaders, strlen(shaders), 0, 0, 0, "VS", "vs_5_0", 0, 0, &vsblob, 0);
-	D3DCompile(shaders, strlen(shaders), 0, 0, 0, "PS", "ps_5_0", 0, 0, &psblob, 0);
-
-	ID3D11VertexShader* vs = 0;
-	ID3D11PixelShader* ps = 0;
-	device->CreateVertexShader(vsblob->GetBufferPointer(), vsblob->GetBufferSize(), 0, &vs);
-	device->CreatePixelShader(psblob->GetBufferPointer(), psblob->GetBufferSize(), 0, &ps);
-
-	context->VSSetShader(vs, 0, 0);
-	context->PSSetShader(ps, 0, 0);
-}
-
-template <typename Cache>
-void inspectCache(Cache cache)
-{
-	unsigned int max_cache_size = 200;
-	unsigned int grid_size = 100;
-
-	for (unsigned int cache_size = 3; cache_size <= max_cache_size; cache_size += 1)
-	{
-		std::vector<unsigned int> grid1;
-		gridGen(grid1, 0, grid_size, 0, grid_size, grid_size, cache_size, true);
-
-		std::vector<unsigned int> grid2;
-		gridGen(grid2, 0, grid_size, 0, grid_size, grid_size, cache_size, false);
-
-		std::vector<unsigned int> grid3;
-		gridGen(grid3, 0, grid_size, 0, grid_size, grid_size, grid_size * 4, false); // this generates a simple indexed grid without striping/degenerate triangles
-		meshopt_optimizeVertexCacheFifo(&grid3[0], &grid3[0], grid3.size(), (grid_size + 1) * (grid_size + 1), cache_size);
-
-		std::vector<unsigned int> grid4;
-		gridGen(grid4, 0, grid_size, 0, grid_size, grid_size, grid_size * 4, false); // this generates a simple indexed grid without striping/degenerate triangles
-		meshopt_optimizeVertexCache(&grid4[0], &grid4[0], grid4.size(), (grid_size + 1) * (grid_size + 1));
-
-		unsigned int invocations1 = cache(&grid1[0], grid1.size());
-		unsigned int invocations2 = cache(&grid2[0], grid2.size());
-		unsigned int invocations3 = cache(&grid3[0], grid3.size());
-		unsigned int invocations4 = cache(&grid4[0], grid4.size());
-
-		unsigned int ideal_invocations = (grid_size + 1) * (grid_size + 1);
-
-		printf("%d, %f, %f, %f, %f\n", cache_size,
-		       double(invocations1) / double(ideal_invocations),
-		       double(invocations2) / double(ideal_invocations),
-		       double(invocations3) / double(ideal_invocations),
-		       double(invocations4) / double(ideal_invocations));
-	}
-}
-
-void testCache(IDXGIAdapter* adapter)
-{
-	ID3D11Device* device = 0;
-	ID3D11DeviceContext* context = 0;
-	D3D11CreateDevice(adapter, D3D_DRIVER_TYPE_UNKNOWN, 0, 0, 0, 0, D3D11_SDK_VERSION, &device, 0, &context);
-
-	setupShaders(device, context);
-
-	inspectCache([&](const unsigned int* indices, size_t index_count) { return queryVSInvocations(device, context, indices, index_count); });
-}
-
-void testCacheSequence(IDXGIAdapter* adapter, int argc, char** argv)
-{
-	ID3D11Device* device = 0;
-	ID3D11DeviceContext* context = 0;
-	D3D11CreateDevice(adapter, D3D_DRIVER_TYPE_UNKNOWN, 0, 0, 0, 0, D3D11_SDK_VERSION, &device, 0, &context);
-
-	setupShaders(device, context);
-
-	std::vector<unsigned int> ib;
-
-	for (int i = 2; i < argc; ++i)
-	{
-		char* end;
-		int i0 = strtol(argv[i], &end, 10);
-
-		if (end[0] == '-')
-		{
-			int i1 = strtol(end + 1, &end, 10);
-
-			if (end[0] != 0)
-			{
-				printf("Unrecognized index range: %s\n", argv[i]);
-				return;
-			}
-
-			if (i0 < i1)
-			{
-				for (int ii = i0; ii <= i1; ++ii)
-					ib.push_back(ii);
-			}
-			else
-			{
-				for (int ii = i0; ii >= i1; --ii)
-					ib.push_back(ii);
-			}
-		}
-		else if (end[0] == '*')
-		{
-			int i1 = strtol(end + 1, &end, 10);
-
-			if (end[0] != 0 || i1 == 0)
-			{
-				printf("Unrecognized index range: %s\n", argv[i]);
-				return;
-			}
-
-			for (int ii = 0; ii < i1; ++ii)
-				ib.push_back(i0);
-		}
-		else if (end[0] == 'x')
-		{
-			int i1 = strtol(end + 1, &end, 10);
-
-			if (end[0] != 0)
-			{
-				printf("Unrecognized index range: %s\n", argv[i]);
-				return;
-			}
-
-			stripGen(ib, 0, i0, 0, i1, i0, true);
-		}
-		else if (end[0] == 0)
-		{
-			ib.push_back(i0);
-		}
-		else
-		{
-			printf("Unrecognized index range: %s\n", argv[i]);
-			return;
-		}
-	}
-
-	if (ib.size() % 3)
-		ib.resize(ib.size() - ib.size() % 3);
-
-	std::vector<bool> xformed(ib.size());
-
-	for (size_t i = 0; i < ib.size(); i += 3)
-	{
-		unsigned int inv0 = i == 0 ? 0 : queryVSInvocations(device, context, ib.data(), i);
-		unsigned int inv1 = queryVSInvocations(device, context, ib.data(), i + 3);
-
-		assert(inv0 <= inv1);
-		assert(inv0 + 3 >= inv1);
-
-		switch (inv1 - inv0)
-		{
-		case 0:
-			xformed[i + 0] = xformed[i + 1] = xformed[i + 2] = false;
-			break;
-
-		case 3:
-			xformed[i + 0] = xformed[i + 1] = xformed[i + 2] = true;
-			break;
-
-		case 1:
-		case 2:
-		{
-			unsigned int a = ib[i + 0];
-			unsigned int b = ib[i + 1];
-			unsigned int c = ib[i + 2];
-
-			ib[i + 0] = ib[i + 1] = ib[i + 2] = a;
-			unsigned int inva = queryVSInvocations(device, context, ib.data(), i + 3);
-
-			ib[i + 1] = ib[i + 2] = b;
-			unsigned int invb = queryVSInvocations(device, context, ib.data(), i + 3);
-
-			ib[i + 2] = c;
-			unsigned int invc = queryVSInvocations(device, context, ib.data(), i + 3);
-
-			assert(inv0 <= inva && inva <= inv1);
-			assert(inv0 <= invb && invb <= inv1);
-			assert(inv0 <= invc && invc <= inv1);
-
-			if (inv1 - inv0 == 1 && a == c && inva == inv1 && invb == inv0 && invc == inv1)
-			{
-				xformed[i + 0] = false;
-				xformed[i + 1] = false;
-				xformed[i + 2] = true;
-			}
-			else
-			{
-				assert(inva <= invb);
-				assert(invb <= invc);
-
-				xformed[i + 0] = inva == inv0 + 1;
-				xformed[i + 1] = invb == inva + 1;
-				xformed[i + 2] = invc == invb + 1;
-			}
-			break;
-		}
-		}
-	}
-
-	unsigned int xformed_total = 0;
-
-	for (size_t i = 0; i < ib.size(); ++i)
-		xformed_total += xformed[i];
-
-	printf("// Sequence: %d indices", int(ib.size()));
-
-	for (size_t i = 0; i < ib.size(); ++i)
-	{
-		if (i % 12 == 0)
-		{
-			printf("\n// %3d*3:", int(i / 3));
-		}
-
-		if (xformed[i])
-			printf(" %3d*", ib[i]);
-		else
-			printf(" %3d ", ib[i]);
-	}
-
-	printf("\n");
-
-	std::vector<unsigned int> cached;
-
-	for (size_t i = 0; i < ib.size(); ++i)
-	{
-		unsigned int index = ib[i];
-		unsigned int inv0 = queryVSInvocations(device, context, ib.data(), ib.size());
-
-		ib.push_back(index);
-		ib.push_back(index);
-		ib.push_back(index);
-
-		unsigned int inv1 = queryVSInvocations(device, context, ib.data(), ib.size());
-
-		ib.resize(ib.size() - 3);
-
-		if (inv1 == inv0)
-			cached.push_back(index);
-	}
-
-	std::sort(cached.begin(), cached.end());
-	cached.erase(std::unique(cached.begin(), cached.end()), cached.end());
-
-	printf("// Cached  :");
-
-	for (size_t i = 0; i < cached.size(); ++i)
-		printf(" %d", cached[i]);
-
-	printf(" (%d)\n", int(cached.size()));
-
-	unsigned int invocations = queryVSInvocations(device, context, ib.data(), ib.size());
-
-	printf("// Invocations: %d\n", invocations);
-
-	assert(xformed_total == invocations);
-}
-
-void testCacheMeshes(IDXGIAdapter* adapter, int argc, char** argv)
-{
-	ID3D11Device* device = 0;
-	ID3D11DeviceContext* context = 0;
-	D3D11CreateDevice(adapter, D3D_DRIVER_TYPE_UNKNOWN, 0, 0, 0, 0, D3D11_SDK_VERSION, &device, 0, &context);
-
-	setupShaders(device, context);
-
-	bool stat = false;
-
-	double atvr_sum = 0;
-	double atvr_count = 0;
-
-	unsigned int total_invocations = 0;
-	unsigned int total_vertices = 0;
-
-	for (int i = 1; i < argc; ++i)
-	{
-		const char* path = argv[i];
-
-		if (strcmp(path, "--stat") == 0)
-		{
-			stat = true;
-			continue;
-		}
-
-		fastObjMesh* obj = fast_obj_read(path);
-		if (!obj)
-		{
-			printf("Error loading %s: file not found\n", path);
-			continue;
-		}
-
-		std::vector<unsigned int> ib1;
-
-		size_t index_offset = 0;
-
-		for (unsigned int i = 0; i < obj->face_count; ++i)
-		{
-			for (unsigned int j = 0; j < obj->face_vertices[i]; ++j)
-			{
-				fastObjIndex gi = obj->indices[index_offset + j];
-
-				// triangulate polygon on the fly; offset-3 is always the first polygon vertex
-				if (j >= 3)
-				{
-					unsigned int i0 = ib1[ib1.size() - 3];
-					unsigned int i1 = ib1[ib1.size() - 1];
-
-					ib1.push_back(i0);
-					ib1.push_back(i1);
-				}
-
-				ib1.push_back(gi.p);
-			}
-
-			index_offset += obj->face_vertices[i];
-		}
-
-		unsigned int vertex_count = obj->position_count;
-		unsigned int index_count = ib1.size();
-
-		unsigned int invocations1 = queryVSInvocations(device, context, ib1.data(), index_count);
-
-		if (stat)
-		{
-			std::vector<unsigned int> ib2(ib1.size());
-			meshopt_optimizeVertexCache(&ib2[0], &ib1[0], ib1.size(), vertex_count);
-
-			unsigned int invocations = queryVSInvocations(device, context, ib2.data(), index_count);
-
-			atvr_sum += double(invocations) / double(vertex_count);
-			atvr_count += 1;
-
-			total_invocations += invocations;
-			total_vertices += vertex_count;
-		}
-		else
-		{
-			printf("%s: baseline    %f\n", path, double(invocations1) / double(vertex_count));
-
-			std::vector<unsigned int> ib3(ib1.size());
-			meshopt_optimizeVertexCache(&ib3[0], &ib1[0], ib1.size(), vertex_count);
-
-			unsigned int invocations3 = queryVSInvocations(device, context, ib3.data(), index_count);
-
-			printf("%s: forsyth     %f\n", path, double(invocations3) / double(vertex_count));
-
-			for (unsigned int cache_size = 12; cache_size <= 24; ++cache_size)
-			{
-				std::vector<unsigned int> ib2(ib1.size());
-				meshopt_optimizeVertexCacheFifo(&ib2[0], &ib1[0], ib1.size(), vertex_count, cache_size);
-
-				unsigned int invocations2 = queryVSInvocations(device, context, ib2.data(), index_count);
-
-				printf("%s: tipsify(%d) %f\n", path, cache_size, double(invocations2) / double(vertex_count));
-			}
-		}
-	}
-
-	if (stat)
-	{
-		printf("ATVR: average %f cumulative %f; %d vertices\n", atvr_sum / atvr_count, double(total_invocations) / double(total_vertices), total_vertices);
-	}
-}
-
-int main(int argc, char** argv)
-{
-	IDXGIFactory1* factory = 0;
-	CreateDXGIFactory1(__uuidof(IDXGIFactory1), (void**)&factory);
-
-	IDXGIAdapter* adapter = NULL;
-	for (unsigned int index = 0; SUCCEEDED(factory->EnumAdapters(index, &adapter)); ++index)
-	{
-		DXGI_ADAPTER_DESC ad = {};
-		adapter->GetDesc(&ad);
-
-		if (ad.VendorId == 0x1414 && ad.DeviceId == 0x8c)
-			continue; // Skip Microsoft Basic Render Driver
-
-		printf("// GPU %d: %S (Vendor %04x Device %04x)\n", index, ad.Description, ad.VendorId, ad.DeviceId);
-
-		if (argc == 1)
-		{
-			testCache(adapter);
-		}
-		else if (argc > 1 && strcmp(argv[1], "--") == 0)
-		{
-			testCacheSequence(adapter, argc, argv);
-		}
-		else
-		{
-			testCacheMeshes(adapter, argc, argv);
-		}
-	}
-}
-#endif

3rdparty/meshoptimizer/tools/vcachetuner.cpp

@@ -1,477 +0,0 @@
-#include "../src/meshoptimizer.h"
-#include "fast_obj.h"
-#include "../demo/miniz.h"
-
-#include <algorithm>
-#include <functional>
-#include <vector>
-
-#include <cmath>
-#include <cstdint>
-#include <cstdio>
-#include <cstring>
-
-const int kCacheSizeMax = 16;
-const int kValenceMax = 8;
-
-namespace meshopt
-{
-extern thread_local float kVertexScoreTableCache[1 + kCacheSizeMax];
-extern thread_local float kVertexScoreTableLive[1 + kValenceMax];
-} // namespace meshopt
-
-struct Profile
-{
-	float weight;
-	int cache, warp, triangle; // vcache tuning parameters
-};
-
-Profile profiles[] =
-{
-	{1.f, 0, 0, 0},  // Compression
-	{1.f, 14, 64, 128}, // AMD GCN
-	{1.f, 32, 32, 32},  // NVidia Pascal
-	// {1.f, 16, 32, 32}, // NVidia Kepler, Maxwell
-	// {1.f, 128, 0, 0}, // Intel
-};
-
-const int Profile_Count = sizeof(profiles) / sizeof(profiles[0]);
-
-struct pcg32_random_t
-{
-	uint64_t state;
-	uint64_t inc;
-};
-
-#define PCG32_INITIALIZER { 0x853c49e6748fea9bULL, 0xda3e39cb94b95bdbULL }
-
-uint32_t pcg32_random_r(pcg32_random_t* rng)
-{
-	uint64_t oldstate = rng->state;
-	// Advance internal state
-	rng->state = oldstate * 6364136223846793005ULL + (rng->inc | 1);
-	// Calculate output function (XSH RR), uses old state for max ILP
-	uint32_t xorshifted = ((oldstate >> 18u) ^ oldstate) >> 27u;
-	uint32_t rot = oldstate >> 59u;
-	return (xorshifted >> rot) | (xorshifted << ((-rot) & 31));
-}
-
-pcg32_random_t rngstate = PCG32_INITIALIZER;
-
-float rand01()
-{
-	return pcg32_random_r(&rngstate) / float(1ull << 32);
-}
-
-uint32_t rand32()
-{
-	return pcg32_random_r(&rngstate);
-}
-
-struct State
-{
-	float cache[kCacheSizeMax];
-	float live[kValenceMax];
-	float fitness;
-};
-
-struct Mesh
-{
-	const char* name;
-
-	size_t vertex_count;
-	std::vector<unsigned int> indices;
-
-	float metric_base[Profile_Count];
-};
-
-Mesh gridmesh(unsigned int N)
-{
-	Mesh result;
-
-	result.name = "grid";
-
-	result.vertex_count = (N + 1) * (N + 1);
-	result.indices.reserve(N * N * 6);
-
-	for (unsigned int y = 0; y < N; ++y)
-		for (unsigned int x = 0; x < N; ++x)
-		{
-			result.indices.push_back((y + 0) * (N + 1) + (x + 0));
-			result.indices.push_back((y + 0) * (N + 1) + (x + 1));
-			result.indices.push_back((y + 1) * (N + 1) + (x + 0));
-
-			result.indices.push_back((y + 1) * (N + 1) + (x + 0));
-			result.indices.push_back((y + 0) * (N + 1) + (x + 1));
-			result.indices.push_back((y + 1) * (N + 1) + (x + 1));
-		}
-
-	return result;
-}
-
-Mesh objmesh(const char* path)
-{
-	fastObjMesh* obj = fast_obj_read(path);
-	if (!obj)
-	{
-		printf("Error loading %s: file not found\n", path);
-		return Mesh();
-	}
-
-	size_t total_indices = 0;
-
-	for (unsigned int i = 0; i < obj->face_count; ++i)
-		total_indices += 3 * (obj->face_vertices[i] - 2);
-
-	struct Vertex
-	{
-		float px, py, pz;
-		float nx, ny, nz;
-		float tx, ty;
-	};
-
-	std::vector<Vertex> vertices(total_indices);
-
-	size_t vertex_offset = 0;
-	size_t index_offset = 0;
-
-	for (unsigned int i = 0; i < obj->face_count; ++i)
-	{
-		for (unsigned int j = 0; j < obj->face_vertices[i]; ++j)
-		{
-			fastObjIndex gi = obj->indices[index_offset + j];
-
-			Vertex v =
-			    {
-			        obj->positions[gi.p * 3 + 0],
-			        obj->positions[gi.p * 3 + 1],
-			        obj->positions[gi.p * 3 + 2],
-			        obj->normals[gi.n * 3 + 0],
-			        obj->normals[gi.n * 3 + 1],
-			        obj->normals[gi.n * 3 + 2],
-			        obj->texcoords[gi.t * 2 + 0],
-			        obj->texcoords[gi.t * 2 + 1],
-			    };
-
-			// triangulate polygon on the fly; offset-3 is always the first polygon vertex
-			if (j >= 3)
-			{
-				vertices[vertex_offset + 0] = vertices[vertex_offset - 3];
-				vertices[vertex_offset + 1] = vertices[vertex_offset - 1];
-				vertex_offset += 2;
-			}
-
-			vertices[vertex_offset] = v;
-			vertex_offset++;
-		}
-
-		index_offset += obj->face_vertices[i];
-	}
-
-	fast_obj_destroy(obj);
-
-	Mesh result;
-
-	result.name = path;
-
-	std::vector<unsigned int> remap(total_indices);
-
-	size_t total_vertices = meshopt_generateVertexRemap(&remap[0], NULL, total_indices, &vertices[0], total_indices, sizeof(Vertex));
-
-	result.indices.resize(total_indices);
-	meshopt_remapIndexBuffer(&result.indices[0], NULL, total_indices, &remap[0]);
-
-	result.vertex_count = total_vertices;
-
-	return result;
-}
-
-template <typename T>
-size_t compress(const std::vector<T>& data)
-{
-	std::vector<unsigned char> cbuf(tdefl_compress_bound(data.size() * sizeof(T)));
-	unsigned int flags = tdefl_create_comp_flags_from_zip_params(MZ_DEFAULT_LEVEL, 15, MZ_DEFAULT_STRATEGY);
-	return tdefl_compress_mem_to_mem(&cbuf[0], cbuf.size(), &data[0], data.size() * sizeof(T), flags);
-}
-
-void compute_metric(const State& state, const Mesh& mesh, float result[Profile_Count])
-{
-	memcpy(meshopt::kVertexScoreTableCache + 1, state.cache, kCacheSizeMax * sizeof(float));
-	memcpy(meshopt::kVertexScoreTableLive + 1, state.live, kValenceMax * sizeof(float));
-
-	std::vector<unsigned int> indices(mesh.indices.size());
-
-	meshopt_optimizeVertexCache(&indices[0], &mesh.indices[0], mesh.indices.size(), mesh.vertex_count);
-	meshopt_optimizeVertexFetch(NULL, &indices[0], indices.size(), NULL, mesh.vertex_count, 0);
-
-	for (int profile = 0; profile < Profile_Count; ++profile)
-	{
-		if (profiles[profile].cache)
-		{
-			meshopt_VertexCacheStatistics stats = meshopt_analyzeVertexCache(&indices[0], indices.size(), mesh.vertex_count, profiles[profile].cache, profiles[profile].warp, profiles[profile].triangle);
-			result[profile] = stats.atvr;
-		}
-		else
-		{
-			std::vector<unsigned char> ibuf(meshopt_encodeIndexBufferBound(indices.size(), mesh.vertex_count));
-			ibuf.resize(meshopt_encodeIndexBuffer(&ibuf[0], ibuf.size(), &indices[0], indices.size()));
-
-			size_t csize = compress(ibuf);
-
-			result[profile] = double(csize) / double(indices.size() / 3);
-		}
-	}
-}
-
-float fitness_score(const State& state, const std::vector<Mesh>& meshes)
-{
-	float result = 0;
-	float count = 0;
-
-	for (auto& mesh : meshes)
-	{
-		float metric[Profile_Count];
-		compute_metric(state, mesh, metric);
-
-		for (int profile = 0; profile < Profile_Count; ++profile)
-		{
-			result += mesh.metric_base[profile] / metric[profile] * profiles[profile].weight;
-			count += profiles[profile].weight;
-		}
-	}
-
-	return result / count;
-}
-
-std::vector<State> gen0(size_t count, const std::vector<Mesh>& meshes)
-{
-	std::vector<State> result;
-
-	for (size_t i = 0; i < count; ++i)
-	{
-		State state = {};
-
-		for (int j = 0; j < kCacheSizeMax; ++j)
-			state.cache[j] = rand01();
-
-		for (int j = 0; j < kValenceMax; ++j)
-			state.live[j] = rand01();
-
-		state.fitness = fitness_score(state, meshes);
-
-		result.push_back(state);
-	}
-
-	return result;
-}
-
-// https://en.wikipedia.org/wiki/Differential_evolution
-// Good Parameters for Differential Evolution. Magnus Erik Hvass Pedersen, 2010
-std::pair<State, float> genN(std::vector<State>& seed, const std::vector<Mesh>& meshes, float crossover = 0.8803f, float weight = 0.4717f)
-{
-	std::vector<State> result(seed.size());
-
-	for (size_t i = 0; i < seed.size(); ++i)
-	{
-		for (;;)
-		{
-			int a = rand32() % seed.size();
-			int b = rand32() % seed.size();
-			int c = rand32() % seed.size();
-
-			if (a == b || a == c || b == c || a == int(i) || b == int(i) || c == int(i))
-				continue;
-
-			int rc = rand32() % kCacheSizeMax;
-			int rl = rand32() % kValenceMax;
-
-			for (int j = 0; j < kCacheSizeMax; ++j)
-			{
-				float r = rand01();
-
-				if (r < crossover || j == rc)
-					result[i].cache[j] = std::max(0.f, std::min(1.f, seed[a].cache[j] + weight * (seed[b].cache[j] - seed[c].cache[j])));
-				else
-					result[i].cache[j] = seed[i].cache[j];
-			}
-
-			for (int j = 0; j < kValenceMax; ++j)
-			{
-				float r = rand01();
-
-				if (r < crossover || j == rl)
-					result[i].live[j] = std::max(0.f, std::min(1.f, seed[a].live[j] + weight * (seed[b].live[j] - seed[c].live[j])));
-				else
-					result[i].live[j] = seed[i].live[j];
-			}
-
-			break;
-		}
-	}
-
-	#pragma omp parallel for
-	for (size_t i = 0; i < seed.size(); ++i)
-	{
-		result[i].fitness = fitness_score(result[i], meshes);
-	}
-
-	State best = {};
-	float bestfit = 0;
-
-	for (size_t i = 0; i < seed.size(); ++i)
-	{
-		if (result[i].fitness > seed[i].fitness)
-			seed[i] = result[i];
-
-		if (seed[i].fitness > bestfit)
-		{
-			best = seed[i];
-			bestfit = seed[i].fitness;
-		}
-	}
-
-	return std::make_pair(best, bestfit);
-}
-
-bool load_state(const char* path, std::vector<State>& result)
-{
-	FILE* file = fopen(path, "rb");
-	if (!file)
-		return false;
-
-	State state;
-
-	result.clear();
-
-	while (fread(&state, sizeof(State), 1, file) == 1)
-		result.push_back(state);
-
-	fclose(file);
-
-	return true;
-}
-
-bool save_state(const char* path, const std::vector<State>& result)
-{
-	FILE* file = fopen(path, "wb");
-	if (!file)
-		return false;
-
-	for (auto& state : result)
-	{
-		if (fwrite(&state, sizeof(State), 1, file) != 1)
-		{
-			fclose(file);
-			return false;
-		}
-	}
-
-	return fclose(file) == 0;
-}
-
-void dump_state(const State& state)
-{
-	printf("cache:");
-	for (int i = 0; i < kCacheSizeMax; ++i)
-	{
-		printf(" %.3f", state.cache[i]);
-	}
-	printf("\n");
-
-	printf("live:");
-	for (int i = 0; i < kValenceMax; ++i)
-	{
-		printf(" %.3f", state.live[i]);
-	}
-	printf("\n");
-}
-
-void dump_stats(const State& state, const std::vector<Mesh>& meshes)
-{
-	float improvement[Profile_Count] = {};
-
-	for (size_t i = 0; i < meshes.size(); ++i)
-	{
-		float metric[Profile_Count];
-		compute_metric(state, meshes[i], metric);
-
-		printf(" %s", meshes[i].name);
-		for (int profile = 0; profile < Profile_Count; ++profile)
-			printf(" %f", metric[profile]);
-
-		for (int profile = 0; profile < Profile_Count; ++profile)
-			improvement[profile] += meshes[i].metric_base[profile] / metric[profile];
-	}
-
-	printf("; improvement");
-	for (int profile = 0; profile < Profile_Count; ++profile)
-		printf(" %f", improvement[profile] / float(meshes.size()));
-
-	printf("\n");
-}
-
-int main(int argc, char** argv)
-{
-	State baseline;
-	memcpy(baseline.cache, meshopt::kVertexScoreTableCache + 1, kCacheSizeMax * sizeof(float));
-	memcpy(baseline.live, meshopt::kVertexScoreTableLive + 1, kValenceMax * sizeof(float));
-
-	std::vector<Mesh> meshes;
-
-	meshes.push_back(gridmesh(50));
-
-	for (int i = 1; i < argc; ++i)
-		meshes.push_back(objmesh(argv[i]));
-
-	size_t total_triangles = 0;
-
-	for (auto& mesh : meshes)
-	{
-		compute_metric(baseline, mesh, mesh.metric_base);
-
-		total_triangles += mesh.indices.size() / 3;
-	}
-
-	std::vector<State> pop;
-	size_t gen = 0;
-
-	if (load_state("mutator.state", pop))
-	{
-		printf("Loaded %d state vectors\n", int(pop.size()));
-	}
-	else
-	{
-		pop = gen0(95, meshes);
-	}
-
-	printf("%d meshes, %.1fM triangles\n", int(meshes.size()), double(total_triangles) / 1e6);
-
-	printf("baseline:");
-	dump_stats(baseline, meshes);
-
-	for (;;)
-	{
-		auto best = genN(pop, meshes);
-		gen++;
-
-		if (gen % 10 == 0)
-		{
-			printf("%d: fitness %f;", int(gen), best.second);
-			dump_stats(best.first, meshes);
-		}
-		else
-		{
-			printf("%d: fitness %f\n", int(gen), best.second);
-		}
-
-		dump_state(best.first);
-
-		if (save_state("mutator.state-temp", pop) && rename("mutator.state-temp", "mutator.state") == 0)
-		{
-		}
-		else
-		{
-			printf("ERROR: Can't save state\n");
-		}
-	}
-}