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+package("ktx")
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+ set_homepage("https://github.com/KhronosGroup/KTX-Software")
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+ set_description("KTX (Khronos Texture) Library and Tools")
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+ set_license("Apache-2.0")
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+
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+ add_urls("https://github.com/KhronosGroup/KTX-Software/archive/refs/tags/$(version).tar.gz",
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+ "https://github.com/KhronosGroup/KTX-Software.git", {submodules = false})
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+
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+ add_versions("v4.4.0", "3585d76edcdcbe3a671479686f8c81c1c10339f419e4b02a9a6f19cc6e4e0612")
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+
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+ add_patches("4.4.0", "patches/4.4.0/dep-unbundle.patch", "2b883bcbfc19f80d72b812d68b606b6e2a4234d913ad92c45d8030bd94207a59")
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+
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+ add_configs("tools", {description = "Create KTX tools", default = false, type = "boolean"})
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+ add_configs("decoder", {description = "ETC decoding support", default = false, type = "boolean"})
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+ add_configs("opencl", {description = "Compile with OpenCL support so applications can choose to use it.", default = false, type = "boolean"})
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+ add_configs("embed", {description = "Embed bitcode in binaries.", default = false, type = "boolean"})
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+ add_configs("ktx1", {description = "Enable KTX 1 support.", default = true, type = "boolean"})
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+ add_configs("ktx2", {description = "Enable KTX 2 support.", default = true, type = "boolean"})
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+ add_configs("vulkan", {description = "Enable Vulkan texture upload.", default = false, type = "boolean"})
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+ add_configs("opengl", {description = "Enable OpenGL texture upload.", default = is_plat("wasm"), type = "boolean"})
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+ -- This project .def file export 64-bit symbols only
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+ if is_plat("wasm", "iphoneos") or (is_plat("windows", "mingw") and is_arch("x86", "i386")) then
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+ add_configs("shared", {description = "Build shared library.", default = false, type = "boolean", readonly = true})
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+ end
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+
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+ add_deps("cmake")
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+ if is_subhost("windows") then
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+ add_deps("pkgconf")
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+ else
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+ add_deps("pkg-config")
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+ end
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+ add_deps("astc-encoder", "zstd")
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+ -- TODO
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+ if is_plat("iphoneos") then
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+ add_includedirs("lib/ktx.framework/Headers")
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+ add_linkdirs("lib/ktx.framework")
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+ add_frameworkdirs("lib/ktx.framework")
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+ add_frameworks("ktx")
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+ end
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+
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+ on_check(function (package)
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+ if is_subhost("windows") and os.arch() == "arm64" then
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+ raise("package(ktx) require python (from pkgconf) for building, but windows arm64 python binaries are unsupported")
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+ end
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+ if package:is_plat("linux") and package:is_arch("arm64") then
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+ raise("package(ktx) dep(astc-encoder) unsupported linux arm64")
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+ end
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+ end)
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+
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+ on_load(function (package)
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+ if package:config("tools") then
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+ package:add("deps", "fmt", "cxxopts", {private = true})
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+ end
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+ if not package:config("shared") then
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+ package:add("defines", "KHRONOS_STATIC")
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+ end
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+ if package:config("ktx1") then
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+ package:add("defines", "KTX_FEATURE_KTX1")
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+ end
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+ if package:config("ktx2") then
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+ package:add("defines", "KTX_FEATURE_KTX2")
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+ end
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+ end)
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+
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+ on_install("!iphoneos and !wasm", function (package)
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+ -- TODO: unbundle basisu & dfdutils
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+ -- io.replace("CMakeLists.txt", "external/dfdutils%g*.c\n", "")
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+ -- io.replace("CMakeLists.txt", "external%g*.cpp\n", "")
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+ io.writefile("external/basisu/zstd/zstd.c", "")
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+ io.replace("CMakeLists.txt", "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/external/basisu/zstd>", "", {plain = true})
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+ io.replace("CMakeLists.txt", "$ $<INSTALL_INTERFACE:external/basisu/zstd>", "", {plain = true})
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+ local file = io.open("CMakeLists.txt", "a")
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+ file:write([[
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+ find_package(zstd REQUIRED CONFIG)
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+ target_link_libraries(ktx PUBLIC zstd::libzstd)
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+ target_link_libraries(ktx_read PUBLIC zstd::libzstd)
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+ ]])
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+ file:close()
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+ if package:config("tools") then
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+ io.replace("CMakeLists.txt", "add_subdirectory(external/fmt)", "find_package(fmt CONFIG REQUIRED)", {plain = true})
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+ io.replace("CMakeLists.txt", "add_subdirectory(external/cxxopts)", "find_package(cxxopts CONFIG REQUIRED)", {plain = true})
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+ end
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+
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+ local configs = {"-DKTX_FEATURE_TESTS=OFF"}
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+ table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:is_debug() and "Debug" or "Release"))
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+ table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
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+
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+ if not package:gitref() and package:version():startswith("v") then
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+ table.insert(configs, "-DKTX_GIT_VERSION_FULL=" .. package:version())
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+ end
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+
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+ table.insert(configs, "-DKTX_FEATURE_TOOLS=" .. (package:config("tools") and "ON" or "OFF"))
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+ table.insert(configs, "-DKTX_FEATURE_ETC_UNPACK=" .. (package:config("decoder") and "ON" or "OFF"))
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+ table.insert(configs, "-DBASISU_SUPPORT_OPENCL=" .. (package:config("opencl") and "ON" or "OFF"))
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+ table.insert(configs, "-DKTX_EMBED_BITCODE=" .. (package:config("embed") and "ON" or "OFF"))
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+ table.insert(configs, "-DKTX_FEATURE_KTX1=" .. (package:config("ktx1") and "ON" or "OFF"))
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+ table.insert(configs, "-DKTX_FEATURE_KTX2=" .. (package:config("ktx2") and "ON" or "OFF"))
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+ table.insert(configs, "-DKTX_FEATURE_VK_UPLOAD=" .. (package:config("vulkan") and "ON" or "OFF"))
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+ table.insert(configs, "-DKTX_FEATURE_GL_UPLOAD=" .. (package:config("opengl") and "ON" or "OFF"))
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+ import("package.tools.cmake").install(package, configs)
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+ end)
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+
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+ on_test(function (package)
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+ assert(package:has_cfuncs("ktxErrorString", {includes = "ktx.h"}))
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+ end)
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