Add OpenGL3 renderer and backends supporting the GLFW and SDL platforms. Emscripten compilation supported on the SDL/GL3 backend.

Backends/RmlUi_Backend_GLFW_GL3.cpp

@@ -0,0 +1,258 @@
+/*
+ * This source file is part of RmlUi, the HTML/CSS Interface Middleware
+ *
+ * For the latest information, see http://github.com/mikke89/RmlUi
+ *
+ * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
+ * Copyright (c) 2019 The RmlUi Team, and contributors
+ *
+ * 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.
+ *
+ */
+
+#include "RmlUi_Backend.h"
+#include "RmlUi_Platform_GLFW.h"
+#include "RmlUi_Renderer_GL3.h"
+#include <RmlUi/Core/Context.h>
+#include <RmlUi/Core/Input.h>
+#include <RmlUi/Core/Profiling.h>
+#include <GLFW/glfw3.h>
+
+static void SetupCallbacks(GLFWwindow* window);
+
+static void LogErrorFromGLFW(int error, const char* description)
+{
+	Rml::Log::Message(Rml::Log::LT_ERROR, "GLFW error (0x%x): %s", error, description);
+}
+
+/**
+    Global data used by this backend.
+
+    Lifetime governed by the calls to Backend::Initialize() and Backend::Shutdown().
+ */
+struct BackendData {
+	SystemInterface_GLFW system_interface;
+	RenderInterface_GL3 render_interface;
+	GLFWwindow* window = nullptr;
+	int glfw_active_modifiers = 0;
+	bool context_dimensions_dirty = true;
+
+	// Arguments set during event processing and nulled otherwise.
+	Rml::Context* context = nullptr;
+	KeyDownCallback key_down_callback = nullptr;
+};
+static Rml::UniquePtr<BackendData> data;
+
+bool Backend::Initialize(const char* name, int width, int height, bool allow_resize)
+{
+	RMLUI_ASSERT(!data);
+
+	glfwSetErrorCallback(LogErrorFromGLFW);
+
+	if (!glfwInit())
+		return false;
+
+	// Set window hints for OpenGL 3.3 Core context creation.
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+	glfwWindowHint(GLFW_DOUBLEBUFFER, GLFW_TRUE);
+
+	// Request stencil buffer of at least 8-bit size to supporting clipping on transformed elements.
+	glfwWindowHint(GLFW_STENCIL_BITS, 8);
+
+	// Enable MSAA for better-looking visuals, especially when transforms are applied.
+	glfwWindowHint(GLFW_SAMPLES, 2);
+
+	// Apply window properties and create it.
+	glfwWindowHint(GLFW_RESIZABLE, allow_resize ? GLFW_TRUE : GLFW_FALSE);
+	glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
+
+	GLFWwindow* window = glfwCreateWindow(width, height, name, nullptr, nullptr);
+	if (!window)
+		return false;
+
+	glfwMakeContextCurrent(window);
+	glfwSwapInterval(1);
+
+	// Load the OpenGL functions.
+	Rml::String renderer_message;
+	if (!RmlGL3::Initialize(&renderer_message))
+		return false;
+
+	// Construct the system and render interface, this includes compiling all the shaders. If this fails, it is likely an error in the shader code.
+	data = Rml::MakeUnique<BackendData>();
+	if (!data || !data->render_interface)
+		return false;
+
+	data->window = window;
+	data->system_interface.SetWindow(window);
+	data->system_interface.LogMessage(Rml::Log::LT_INFO, renderer_message);
+
+	// The window size may have been scaled by DPI settings, get the actual pixel size.
+	glfwGetFramebufferSize(window, &width, &height);
+	data->render_interface.SetViewport(width, height);
+
+	// Setup the input and window event callback functions.
+	SetupCallbacks(window);
+
+	return true;
+}
+
+void Backend::Shutdown()
+{
+	RMLUI_ASSERT(data);
+	glfwDestroyWindow(data->window);
+	data.reset();
+	RmlGL3::Shutdown();
+	glfwTerminate();
+}
+
+Rml::SystemInterface* Backend::GetSystemInterface()
+{
+	RMLUI_ASSERT(data);
+	return &data->system_interface;
+}
+
+Rml::RenderInterface* Backend::GetRenderInterface()
+{
+	RMLUI_ASSERT(data);
+	return &data->render_interface;
+}
+
+bool Backend::ProcessEvents(Rml::Context* context, KeyDownCallback key_down_callback)
+{
+	RMLUI_ASSERT(data && context);
+
+	// The initial window size may have been affected by system DPI settings, apply the actual pixel size and dp-ratio to the context.
+	if (data->context_dimensions_dirty)
+	{
+		data->context_dimensions_dirty = false;
+
+		Rml::Vector2i window_size;
+		float dp_ratio = 1.f;
+		glfwGetFramebufferSize(data->window, &window_size.x, &window_size.y);
+		glfwGetWindowContentScale(data->window, &dp_ratio, nullptr);
+
+		context->SetDimensions(window_size);
+		context->SetDensityIndependentPixelRatio(dp_ratio);
+	}
+
+	data->context = context;
+	data->key_down_callback = key_down_callback;
+
+	glfwPollEvents();
+
+	data->context = nullptr;
+	data->key_down_callback = nullptr;
+
+	return !glfwWindowShouldClose(data->window);
+}
+
+void Backend::RequestExit()
+{
+	RMLUI_ASSERT(data);
+	glfwSetWindowShouldClose(data->window, GLFW_TRUE);
+}
+
+void Backend::BeginFrame()
+{
+	RMLUI_ASSERT(data);
+	data->render_interface.BeginFrame();
+	data->render_interface.Clear();
+}
+
+void Backend::PresentFrame()
+{
+	RMLUI_ASSERT(data);
+	data->render_interface.EndFrame();
+	glfwSwapBuffers(data->window);
+
+	// Optional, used to mark frames during performance profiling.
+	RMLUI_FrameMark;
+}
+
+static void SetupCallbacks(GLFWwindow* window)
+{
+	RMLUI_ASSERT(data);
+
+	// Key input
+	glfwSetKeyCallback(window, [](GLFWwindow* /*window*/, int glfw_key, int /*scancode*/, int glfw_action, int glfw_mods) {
+		if (!data->context)
+			return;
+
+		// Store the active modifiers for later because GLFW doesn't provide them in the callbacks to the mouse input events.
+		data->glfw_active_modifiers = glfw_mods;
+
+		// Override the default key event callback to add global shortcuts for the samples.
+		Rml::Context* context = data->context;
+		KeyDownCallback key_down_callback = data->key_down_callback;
+
+		switch (glfw_action)
+		{
+		case GLFW_PRESS:
+		case GLFW_REPEAT:
+		{
+			const Rml::Input::KeyIdentifier key = RmlGLFW::ConvertKey(glfw_key);
+			const int key_modifier = RmlGLFW::ConvertKeyModifiers(glfw_mods);
+			float dp_ratio = 1.f;
+			glfwGetWindowContentScale(data->window, &dp_ratio, nullptr);
+
+			// See if we have any global shortcuts that take priority over the context.
+			if (key_down_callback && !key_down_callback(context, key, key_modifier, dp_ratio, true))
+				break;
+			// Otherwise, hand the event over to the context by calling the input handler as normal.
+			if (!RmlGLFW::ProcessKeyCallback(context, glfw_key, glfw_action, glfw_mods))
+				break;
+			// The key was not consumed by the context either, try keyboard shortcuts of lower priority.
+			if (key_down_callback && !key_down_callback(context, key, key_modifier, dp_ratio, false))
+				break;
+		}
+		break;
+		case GLFW_RELEASE:
+			RmlGLFW::ProcessKeyCallback(context, glfw_key, glfw_action, glfw_mods);
+			break;
+		}
+	});
+
+	glfwSetCharCallback(window, [](GLFWwindow* /*window*/, unsigned int codepoint) { RmlGLFW::ProcessCharCallback(data->context, codepoint); });
+
+	// Mouse input
+	glfwSetCursorPosCallback(window, [](GLFWwindow* /*window*/, double xpos, double ypos) {
+		RmlGLFW::ProcessCursorPosCallback(data->context, xpos, ypos, data->glfw_active_modifiers);
+	});
+
+	glfwSetMouseButtonCallback(window, [](GLFWwindow* /*window*/, int button, int action, int mods) {
+		data->glfw_active_modifiers = mods;
+		RmlGLFW::ProcessMouseButtonCallback(data->context, button, action, mods);
+	});
+
+	glfwSetScrollCallback(window, [](GLFWwindow* /*window*/, double /*xoffset*/, double yoffset) {
+		RmlGLFW::ProcessScrollCallback(data->context, yoffset, data->glfw_active_modifiers);
+	});
+
+	// Window events
+	glfwSetFramebufferSizeCallback(window, [](GLFWwindow* /*window*/, int width, int height) {
+		data->render_interface.SetViewport(width, height);
+		RmlGLFW::ProcessFramebufferSizeCallback(data->context, width, height);
+	});
+
+	glfwSetWindowContentScaleCallback(window,
+		[](GLFWwindow* /*window*/, float xscale, float /*yscale*/) { RmlGLFW::ProcessContentScaleCallback(data->context, xscale); });
+}

Backends/RmlUi_Backend_SDL_GL3.cpp

@@ -0,0 +1,314 @@
+/*
+ * This source file is part of RmlUi, the HTML/CSS Interface Middleware
+ *
+ * For the latest information, see http://github.com/mikke89/RmlUi
+ *
+ * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
+ * Copyright (c) 2019 The RmlUi Team, and contributors
+ *
+ * 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.
+ *
+ */
+
+#include "RmlUi_Backend.h"
+#include "RmlUi_Platform_SDL.h"
+#include "RmlUi_Renderer_GL3.h"
+#include <RmlUi/Core/Context.h>
+#include <RmlUi/Core/Core.h>
+#include <RmlUi/Core/FileInterface.h>
+#include <SDL.h>
+#include <SDL_image.h>
+
+#if defined RMLUI_PLATFORM_EMSCRIPTEN
+	#include <emscripten.h>
+#else
+	#if !(SDL_VIDEO_RENDER_OGL)
+		#error "Only the OpenGL SDL backend is supported."
+	#endif
+#endif
+
+/**
+    Custom render interface example for the SDL/GL3 backend.
+
+    Overloads the OpenGL3 render interface to load textures through SDL_image's built-in texture loading functionality.
+ */
+class RenderInterface_GL3_SDL : public RenderInterface_GL3 {
+public:
+	RenderInterface_GL3_SDL() {}
+
+	bool LoadTexture(Rml::TextureHandle& texture_handle, Rml::Vector2i& texture_dimensions, const Rml::String& source) override
+	{
+		Rml::FileInterface* file_interface = Rml::GetFileInterface();
+		Rml::FileHandle file_handle = file_interface->Open(source);
+		if (!file_handle)
+			return false;
+
+		file_interface->Seek(file_handle, 0, SEEK_END);
+		const size_t buffer_size = file_interface->Tell(file_handle);
+		file_interface->Seek(file_handle, 0, SEEK_SET);
+
+		using Rml::byte;
+		Rml::UniquePtr<byte[]> buffer(new byte[buffer_size]);
+		file_interface->Read(buffer.get(), buffer_size, file_handle);
+		file_interface->Close(file_handle);
+
+		const size_t i = source.rfind('.');
+		Rml::String extension = (i == Rml::String::npos ? Rml::String() : source.substr(i + 1));
+
+		SDL_Surface* surface = IMG_LoadTyped_RW(SDL_RWFromMem(buffer.get(), int(buffer_size)), 1, extension.c_str());
+
+		bool success = false;
+		if (surface)
+		{
+			texture_dimensions.x = surface->w;
+			texture_dimensions.y = surface->h;
+
+			if (surface->format->format != SDL_PIXELFORMAT_RGBA32)
+			{
+				SDL_SetSurfaceAlphaMod(surface, SDL_ALPHA_OPAQUE);
+				SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_NONE);
+
+				SDL_Surface* new_surface = SDL_CreateRGBSurfaceWithFormat(0, surface->w, surface->h, 32, SDL_PIXELFORMAT_RGBA32);
+				if (!new_surface)
+					return false;
+
+				if (SDL_BlitSurface(surface, 0, new_surface, 0) != 0)
+					return false;
+
+				SDL_FreeSurface(surface);
+				surface = new_surface;
+			}
+
+			success = RenderInterface_GL3::GenerateTexture(texture_handle, (const Rml::byte*)surface->pixels, texture_dimensions);
+			SDL_FreeSurface(surface);
+		}
+
+		return success;
+	}
+};
+
+/**
+    Global data used by this backend.
+
+    Lifetime governed by the calls to Backend::Initialize() and Backend::Shutdown().
+ */
+struct BackendData {
+	SystemInterface_SDL system_interface;
+	RenderInterface_GL3_SDL render_interface;
+
+	SDL_Window* window = nullptr;
+	SDL_GLContext glcontext = nullptr;
+
+	bool running = true;
+};
+static Rml::UniquePtr<BackendData> data;
+
+bool Backend::Initialize(const char* window_name, int width, int height, bool allow_resize)
+{
+	RMLUI_ASSERT(!data);
+
+	if (SDL_Init(SDL_INIT_VIDEO) != 0)
+		return false;
+
+#if defined RMLUI_PLATFORM_EMSCRIPTEN
+	// GLES 3.0 (WebGL 2.0)
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
+#else
+	// GL 3.3 Core
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
+#endif
+
+	// Request stencil buffer of at least 8-bit size to supporting clipping on transformed elements.
+	SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
+	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+
+	// Enable linear filtering and MSAA for better-looking visuals, especially when transforms are applied.
+	SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
+	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
+	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 2);
+
+	const Uint32 window_flags = (SDL_WINDOW_OPENGL | (allow_resize ? SDL_WINDOW_RESIZABLE : 0));
+
+	SDL_Window* window = SDL_CreateWindow(window_name, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, window_flags);
+	if (!window)
+	{
+		// Try again on low-quality settings.
+		SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
+		SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 0);
+		SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 0);
+		window = SDL_CreateWindow(window_name, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, window_flags);
+		if (!window)
+		{
+			fprintf(stderr, "SDL error on create window: %s\n", SDL_GetError());
+			return false;
+		}
+	}
+
+	SDL_GLContext glcontext = SDL_GL_CreateContext(window);
+	SDL_GL_MakeCurrent(window, glcontext);
+	SDL_GL_SetSwapInterval(1);
+
+	if (!RmlGL3::Initialize())
+	{
+		fprintf(stderr, "Could not initialize OpenGL");
+		return false;
+	}
+
+	data = Rml::MakeUnique<BackendData>();
+
+	if (!data->render_interface)
+	{
+		data.reset();
+		fprintf(stderr, "Could not initialize OpenGL3 render interface.");
+		return false;
+	}
+
+	data->window = window;
+	data->glcontext = glcontext;
+
+	data->system_interface.SetWindow(window);
+	data->render_interface.SetViewport(width, height);
+
+	return true;
+}
+
+void Backend::Shutdown()
+{
+	RMLUI_ASSERT(data);
+
+	SDL_GL_DeleteContext(data->glcontext);
+	SDL_DestroyWindow(data->window);
+
+	data.reset();
+
+	SDL_Quit();
+}
+
+Rml::SystemInterface* Backend::GetSystemInterface()
+{
+	RMLUI_ASSERT(data);
+	return &data->system_interface;
+}
+
+Rml::RenderInterface* Backend::GetRenderInterface()
+{
+	RMLUI_ASSERT(data);
+	return &data->render_interface;
+}
+
+bool Backend::ProcessEvents(Rml::Context* context, KeyDownCallback key_down_callback)
+{
+	RMLUI_ASSERT(data && context);
+
+#if defined RMLUI_PLATFORM_EMSCRIPTEN
+
+	// Ideally we would hand over control of the main loop to emscripten:
+	//
+	//  // Hand over control of the main loop to the WebAssembly runtime.
+	//  emscripten_set_main_loop_arg(EventLoopIteration, (void*)user_data_handle, 0, true);
+	//
+	// The above is the recommended approach. However, as we don't control the main loop here we have to make due with another approach. Instead, use
+	// Asyncify to yield by sleeping.
+	// Important: Must be linked with option -sASYNCIFY
+	emscripten_sleep(1);
+
+#endif
+
+	bool result = data->running;
+	SDL_Event ev;
+
+	while (SDL_PollEvent(&ev))
+	{
+		switch (ev.type)
+		{
+		case SDL_QUIT:
+		{
+			result = false;
+		}
+		break;
+		case SDL_KEYDOWN:
+		{
+			const Rml::Input::KeyIdentifier key = RmlSDL::ConvertKey(ev.key.keysym.sym);
+			const int key_modifier = RmlSDL::GetKeyModifierState();
+			const float native_dp_ratio = 1.f;
+
+			// See if we have any global shortcuts that take priority over the context.
+			if (key_down_callback && !key_down_callback(context, key, key_modifier, native_dp_ratio, true))
+				break;
+			// Otherwise, hand the event over to the context by calling the input handler as normal.
+			if (!RmlSDL::InputEventHandler(context, ev))
+				break;
+			// The key was not consumed by the context either, try keyboard shortcuts of lower priority.
+			if (key_down_callback && !key_down_callback(context, key, key_modifier, native_dp_ratio, false))
+				break;
+		}
+		break;
+		case SDL_WINDOWEVENT:
+		{
+			switch (ev.window.event)
+			{
+			case SDL_WINDOWEVENT_SIZE_CHANGED:
+			{
+				Rml::Vector2i dimensions(ev.window.data1, ev.window.data2);
+				context->SetDimensions(dimensions);
+				data->render_interface.SetViewport(dimensions.x, dimensions.y);
+			}
+			break;
+			}
+		}
+		break;
+		default:
+		{
+			RmlSDL::InputEventHandler(context, ev);
+		}
+		break;
+		}
+	}
+
+	return result;
+}
+
+void Backend::RequestExit()
+{
+	RMLUI_ASSERT(data);
+
+	data->running = false;
+}
+
+void Backend::BeginFrame()
+{
+	RMLUI_ASSERT(data);
+
+	data->render_interface.Clear();
+	data->render_interface.BeginFrame();
+}
+
+void Backend::PresentFrame()
+{
+	RMLUI_ASSERT(data);
+
+	data->render_interface.EndFrame();
+	SDL_GL_SwapWindow(data->window);
+}

Backends/RmlUi_Include_GL3.h

@@ -0,0 +1,3582 @@
+/**
+ * Loader generated by glad 2.0.0-beta on Fri Mar 11 10:53:06 2022
+ *
+ * Generator: C/C++
+ * Specification: gl
+ * Extensions: 0
+ *
+ * APIs:
+ *  - gl:core=3.3
+ *
+ * Options:
+ *  - ALIAS = False
+ *  - DEBUG = False
+ *  - HEADER_ONLY = True
+ *  - LOADER = True
+ *  - MX = False
+ *  - MX_GLOBAL = False
+ *  - ON_DEMAND = False
+ *
+ * Commandline:
+ *    --api='gl:core=3.3' --extensions='' c --header-only --loader
+ *
+ * Online:
+ *    http://glad.sh/#api=gl%3Acore%3D3.3&extensions=&generator=c&options=HEADER_ONLY%2CLOADER
+ *
+ */
+
+#ifndef GLAD_GL_H_
+#define GLAD_GL_H_
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreserved-id-macro"
+#endif
+#ifdef __gl_h_
+  #error OpenGL (gl.h) header already included (API: gl), remove previous include!
+#endif
+#define __gl_h_ 1
+#ifdef __gl3_h_
+  #error OpenGL (gl3.h) header already included (API: gl), remove previous include!
+#endif
+#define __gl3_h_ 1
+#ifdef __glext_h_
+  #error OpenGL (glext.h) header already included (API: gl), remove previous include!
+#endif
+#define __glext_h_ 1
+#ifdef __gl3ext_h_
+  #error OpenGL (gl3ext.h) header already included (API: gl), remove previous include!
+#endif
+#define __gl3ext_h_ 1
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+#define GLAD_GL
+#define GLAD_OPTION_GL_HEADER_ONLY
+#define GLAD_OPTION_GL_LOADER
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef GLAD_PLATFORM_H_
+#define GLAD_PLATFORM_H_
+
+#ifndef GLAD_PLATFORM_WIN32
+  #if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) || defined(__MINGW32__)
+    #define GLAD_PLATFORM_WIN32 1
+  #else
+    #define GLAD_PLATFORM_WIN32 0
+  #endif
+#endif
+
+#ifndef GLAD_PLATFORM_APPLE
+  #ifdef __APPLE__
+    #define GLAD_PLATFORM_APPLE 1
+  #else
+    #define GLAD_PLATFORM_APPLE 0
+  #endif
+#endif
+
+#ifndef GLAD_PLATFORM_EMSCRIPTEN
+  #ifdef __EMSCRIPTEN__
+    #define GLAD_PLATFORM_EMSCRIPTEN 1
+  #else
+    #define GLAD_PLATFORM_EMSCRIPTEN 0
+  #endif
+#endif
+
+#ifndef GLAD_PLATFORM_UWP
+  #if defined(_MSC_VER) && !defined(GLAD_INTERNAL_HAVE_WINAPIFAMILY)
+    #ifdef __has_include
+      #if __has_include(<winapifamily.h>)
+        #define GLAD_INTERNAL_HAVE_WINAPIFAMILY 1
+      #endif
+    #elif _MSC_VER >= 1700 && !_USING_V110_SDK71_
+      #define GLAD_INTERNAL_HAVE_WINAPIFAMILY 1
+    #endif
+  #endif
+
+  #ifdef GLAD_INTERNAL_HAVE_WINAPIFAMILY
+    #include <winapifamily.h>
+    #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
+      #define GLAD_PLATFORM_UWP 1
+    #endif
+  #endif
+
+  #ifndef GLAD_PLATFORM_UWP
+    #define GLAD_PLATFORM_UWP 0
+  #endif
+#endif
+
+#ifdef __GNUC__
+  #define GLAD_GNUC_EXTENSION __extension__
+#else
+  #define GLAD_GNUC_EXTENSION
+#endif
+
+#ifndef GLAD_API_CALL
+  #if defined(GLAD_API_CALL_EXPORT)
+    #if GLAD_PLATFORM_WIN32 || defined(__CYGWIN__)
+      #if defined(GLAD_API_CALL_EXPORT_BUILD)
+        #if defined(__GNUC__)
+          #define GLAD_API_CALL __attribute__ ((dllexport)) extern
+        #else
+          #define GLAD_API_CALL __declspec(dllexport) extern
+        #endif
+      #else
+        #if defined(__GNUC__)
+          #define GLAD_API_CALL __attribute__ ((dllimport)) extern
+        #else
+          #define GLAD_API_CALL __declspec(dllimport) extern
+        #endif
+      #endif
+    #elif defined(__GNUC__) && defined(GLAD_API_CALL_EXPORT_BUILD)
+      #define GLAD_API_CALL __attribute__ ((visibility ("default"))) extern
+    #else
+      #define GLAD_API_CALL extern
+    #endif
+  #else
+    #define GLAD_API_CALL extern
+  #endif
+#endif
+
+#ifdef APIENTRY
+  #define GLAD_API_PTR APIENTRY
+#elif GLAD_PLATFORM_WIN32
+  #define GLAD_API_PTR __stdcall
+#else
+  #define GLAD_API_PTR
+#endif
+
+#ifndef GLAPI
+#define GLAPI GLAD_API_CALL
+#endif
+
+#ifndef GLAPIENTRY
+#define GLAPIENTRY GLAD_API_PTR
+#endif
+
+#define GLAD_MAKE_VERSION(major, minor) (major * 10000 + minor)
+#define GLAD_VERSION_MAJOR(version) (version / 10000)
+#define GLAD_VERSION_MINOR(version) (version % 10000)
+
+#define GLAD_GENERATOR_VERSION "2.0.0-beta"
+
+typedef void (*GLADapiproc)(void);
+
+typedef GLADapiproc (*GLADloadfunc)(const char *name);
+typedef GLADapiproc (*GLADuserptrloadfunc)(void *userptr, const char *name);
+
+typedef void (*GLADprecallback)(const char *name, GLADapiproc apiproc, int len_args, ...);
+typedef void (*GLADpostcallback)(void *ret, const char *name, GLADapiproc apiproc, int len_args, ...);
+
+#endif /* GLAD_PLATFORM_H_ */
+
+#define GL_ACTIVE_ATTRIBUTES 0x8B89
+#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
+#define GL_ACTIVE_TEXTURE 0x84E0
+#define GL_ACTIVE_UNIFORMS 0x8B86
+#define GL_ACTIVE_UNIFORM_BLOCKS 0x8A36
+#define GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH 0x8A35
+#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
+#define GL_ALIASED_LINE_WIDTH_RANGE 0x846E
+#define GL_ALPHA 0x1906
+#define GL_ALREADY_SIGNALED 0x911A
+#define GL_ALWAYS 0x0207
+#define GL_AND 0x1501
+#define GL_AND_INVERTED 0x1504
+#define GL_AND_REVERSE 0x1502
+#define GL_ANY_SAMPLES_PASSED 0x8C2F
+#define GL_ARRAY_BUFFER 0x8892
+#define GL_ARRAY_BUFFER_BINDING 0x8894
+#define GL_ATTACHED_SHADERS 0x8B85
+#define GL_BACK 0x0405
+#define GL_BACK_LEFT 0x0402
+#define GL_BACK_RIGHT 0x0403
+#define GL_BGR 0x80E0
+#define GL_BGRA 0x80E1
+#define GL_BGRA_INTEGER 0x8D9B
+#define GL_BGR_INTEGER 0x8D9A
+#define GL_BLEND 0x0BE2
+#define GL_BLEND_COLOR 0x8005
+#define GL_BLEND_DST 0x0BE0
+#define GL_BLEND_DST_ALPHA 0x80CA
+#define GL_BLEND_DST_RGB 0x80C8
+#define GL_BLEND_EQUATION 0x8009
+#define GL_BLEND_EQUATION_ALPHA 0x883D
+#define GL_BLEND_EQUATION_RGB 0x8009
+#define GL_BLEND_SRC 0x0BE1
+#define GL_BLEND_SRC_ALPHA 0x80CB
+#define GL_BLEND_SRC_RGB 0x80C9
+#define GL_BLUE 0x1905
+#define GL_BLUE_INTEGER 0x8D96
+#define GL_BOOL 0x8B56
+#define GL_BOOL_VEC2 0x8B57
+#define GL_BOOL_VEC3 0x8B58
+#define GL_BOOL_VEC4 0x8B59
+#define GL_BUFFER_ACCESS 0x88BB
+#define GL_BUFFER_ACCESS_FLAGS 0x911F
+#define GL_BUFFER_MAPPED 0x88BC
+#define GL_BUFFER_MAP_LENGTH 0x9120
+#define GL_BUFFER_MAP_OFFSET 0x9121
+#define GL_BUFFER_MAP_POINTER 0x88BD
+#define GL_BUFFER_SIZE 0x8764
+#define GL_BUFFER_USAGE 0x8765
+#define GL_BYTE 0x1400
+#define GL_CCW 0x0901
+#define GL_CLAMP_READ_COLOR 0x891C
+#define GL_CLAMP_TO_BORDER 0x812D
+#define GL_CLAMP_TO_EDGE 0x812F
+#define GL_CLEAR 0x1500
+#define GL_CLIP_DISTANCE0 0x3000
+#define GL_CLIP_DISTANCE1 0x3001
+#define GL_CLIP_DISTANCE2 0x3002
+#define GL_CLIP_DISTANCE3 0x3003
+#define GL_CLIP_DISTANCE4 0x3004
+#define GL_CLIP_DISTANCE5 0x3005
+#define GL_CLIP_DISTANCE6 0x3006
+#define GL_CLIP_DISTANCE7 0x3007
+#define GL_COLOR 0x1800
+#define GL_COLOR_ATTACHMENT0 0x8CE0
+#define GL_COLOR_ATTACHMENT1 0x8CE1
+#define GL_COLOR_ATTACHMENT10 0x8CEA
+#define GL_COLOR_ATTACHMENT11 0x8CEB
+#define GL_COLOR_ATTACHMENT12 0x8CEC
+#define GL_COLOR_ATTACHMENT13 0x8CED
+#define GL_COLOR_ATTACHMENT14 0x8CEE
+#define GL_COLOR_ATTACHMENT15 0x8CEF
+#define GL_COLOR_ATTACHMENT16 0x8CF0
+#define GL_COLOR_ATTACHMENT17 0x8CF1
+#define GL_COLOR_ATTACHMENT18 0x8CF2
+#define GL_COLOR_ATTACHMENT19 0x8CF3
+#define GL_COLOR_ATTACHMENT2 0x8CE2
+#define GL_COLOR_ATTACHMENT20 0x8CF4
+#define GL_COLOR_ATTACHMENT21 0x8CF5
+#define GL_COLOR_ATTACHMENT22 0x8CF6
+#define GL_COLOR_ATTACHMENT23 0x8CF7
+#define GL_COLOR_ATTACHMENT24 0x8CF8
+#define GL_COLOR_ATTACHMENT25 0x8CF9
+#define GL_COLOR_ATTACHMENT26 0x8CFA
+#define GL_COLOR_ATTACHMENT27 0x8CFB
+#define GL_COLOR_ATTACHMENT28 0x8CFC
+#define GL_COLOR_ATTACHMENT29 0x8CFD
+#define GL_COLOR_ATTACHMENT3 0x8CE3
+#define GL_COLOR_ATTACHMENT30 0x8CFE
+#define GL_COLOR_ATTACHMENT31 0x8CFF
+#define GL_COLOR_ATTACHMENT4 0x8CE4
+#define GL_COLOR_ATTACHMENT5 0x8CE5
+#define GL_COLOR_ATTACHMENT6 0x8CE6
+#define GL_COLOR_ATTACHMENT7 0x8CE7
+#define GL_COLOR_ATTACHMENT8 0x8CE8
+#define GL_COLOR_ATTACHMENT9 0x8CE9
+#define GL_COLOR_BUFFER_BIT 0x00004000
+#define GL_COLOR_CLEAR_VALUE 0x0C22
+#define GL_COLOR_LOGIC_OP 0x0BF2
+#define GL_COLOR_WRITEMASK 0x0C23
+#define GL_COMPARE_REF_TO_TEXTURE 0x884E
+#define GL_COMPILE_STATUS 0x8B81
+#define GL_COMPRESSED_RED 0x8225
+#define GL_COMPRESSED_RED_RGTC1 0x8DBB
+#define GL_COMPRESSED_RG 0x8226
+#define GL_COMPRESSED_RGB 0x84ED
+#define GL_COMPRESSED_RGBA 0x84EE
+#define GL_COMPRESSED_RG_RGTC2 0x8DBD
+#define GL_COMPRESSED_SIGNED_RED_RGTC1 0x8DBC
+#define GL_COMPRESSED_SIGNED_RG_RGTC2 0x8DBE
+#define GL_COMPRESSED_SRGB 0x8C48
+#define GL_COMPRESSED_SRGB_ALPHA 0x8C49
+#define GL_COMPRESSED_TEXTURE_FORMATS 0x86A3
+#define GL_CONDITION_SATISFIED 0x911C
+#define GL_CONSTANT_ALPHA 0x8003
+#define GL_CONSTANT_COLOR 0x8001
+#define GL_CONTEXT_COMPATIBILITY_PROFILE_BIT 0x00000002
+#define GL_CONTEXT_CORE_PROFILE_BIT 0x00000001
+#define GL_CONTEXT_FLAGS 0x821E
+#define GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT 0x00000001
+#define GL_CONTEXT_PROFILE_MASK 0x9126
+#define GL_COPY 0x1503
+#define GL_COPY_INVERTED 0x150C
+#define GL_COPY_READ_BUFFER 0x8F36
+#define GL_COPY_WRITE_BUFFER 0x8F37
+#define GL_CULL_FACE 0x0B44
+#define GL_CULL_FACE_MODE 0x0B45
+#define GL_CURRENT_PROGRAM 0x8B8D
+#define GL_CURRENT_QUERY 0x8865
+#define GL_CURRENT_VERTEX_ATTRIB 0x8626
+#define GL_CW 0x0900
+#define GL_DECR 0x1E03
+#define GL_DECR_WRAP 0x8508
+#define GL_DELETE_STATUS 0x8B80
+#define GL_DEPTH 0x1801
+#define GL_DEPTH24_STENCIL8 0x88F0
+#define GL_DEPTH32F_STENCIL8 0x8CAD
+#define GL_DEPTH_ATTACHMENT 0x8D00
+#define GL_DEPTH_BUFFER_BIT 0x00000100
+#define GL_DEPTH_CLAMP 0x864F
+#define GL_DEPTH_CLEAR_VALUE 0x0B73
+#define GL_DEPTH_COMPONENT 0x1902
+#define GL_DEPTH_COMPONENT16 0x81A5
+#define GL_DEPTH_COMPONENT24 0x81A6
+#define GL_DEPTH_COMPONENT32 0x81A7
+#define GL_DEPTH_COMPONENT32F 0x8CAC
+#define GL_DEPTH_FUNC 0x0B74
+#define GL_DEPTH_RANGE 0x0B70
+#define GL_DEPTH_STENCIL 0x84F9
+#define GL_DEPTH_STENCIL_ATTACHMENT 0x821A
+#define GL_DEPTH_TEST 0x0B71
+#define GL_DEPTH_WRITEMASK 0x0B72
+#define GL_DITHER 0x0BD0
+#define GL_DONT_CARE 0x1100
+#define GL_DOUBLE 0x140A
+#define GL_DOUBLEBUFFER 0x0C32
+#define GL_DRAW_BUFFER 0x0C01
+#define GL_DRAW_BUFFER0 0x8825
+#define GL_DRAW_BUFFER1 0x8826
+#define GL_DRAW_BUFFER10 0x882F
+#define GL_DRAW_BUFFER11 0x8830
+#define GL_DRAW_BUFFER12 0x8831
+#define GL_DRAW_BUFFER13 0x8832
+#define GL_DRAW_BUFFER14 0x8833
+#define GL_DRAW_BUFFER15 0x8834
+#define GL_DRAW_BUFFER2 0x8827
+#define GL_DRAW_BUFFER3 0x8828
+#define GL_DRAW_BUFFER4 0x8829
+#define GL_DRAW_BUFFER5 0x882A
+#define GL_DRAW_BUFFER6 0x882B
+#define GL_DRAW_BUFFER7 0x882C
+#define GL_DRAW_BUFFER8 0x882D
+#define GL_DRAW_BUFFER9 0x882E
+#define GL_DRAW_FRAMEBUFFER 0x8CA9
+#define GL_DRAW_FRAMEBUFFER_BINDING 0x8CA6
+#define GL_DST_ALPHA 0x0304
+#define GL_DST_COLOR 0x0306
+#define GL_DYNAMIC_COPY 0x88EA
+#define GL_DYNAMIC_DRAW 0x88E8
+#define GL_DYNAMIC_READ 0x88E9
+#define GL_ELEMENT_ARRAY_BUFFER 0x8893
+#define GL_ELEMENT_ARRAY_BUFFER_BINDING 0x8895
+#define GL_EQUAL 0x0202
+#define GL_EQUIV 0x1509
+#define GL_EXTENSIONS 0x1F03
+#define GL_FALSE 0
+#define GL_FASTEST 0x1101
+#define GL_FILL 0x1B02
+#define GL_FIRST_VERTEX_CONVENTION 0x8E4D
+#define GL_FIXED_ONLY 0x891D
+#define GL_FLOAT 0x1406
+#define GL_FLOAT_32_UNSIGNED_INT_24_8_REV 0x8DAD
+#define GL_FLOAT_MAT2 0x8B5A
+#define GL_FLOAT_MAT2x3 0x8B65
+#define GL_FLOAT_MAT2x4 0x8B66
+#define GL_FLOAT_MAT3 0x8B5B
+#define GL_FLOAT_MAT3x2 0x8B67
+#define GL_FLOAT_MAT3x4 0x8B68
+#define GL_FLOAT_MAT4 0x8B5C
+#define GL_FLOAT_MAT4x2 0x8B69
+#define GL_FLOAT_MAT4x3 0x8B6A
+#define GL_FLOAT_VEC2 0x8B50
+#define GL_FLOAT_VEC3 0x8B51
+#define GL_FLOAT_VEC4 0x8B52
+#define GL_FRAGMENT_SHADER 0x8B30
+#define GL_FRAGMENT_SHADER_DERIVATIVE_HINT 0x8B8B
+#define GL_FRAMEBUFFER 0x8D40
+#define GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE 0x8215
+#define GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE 0x8214
+#define GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING 0x8210
+#define GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE 0x8211
+#define GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE 0x8216
+#define GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE 0x8213
+#define GL_FRAMEBUFFER_ATTACHMENT_LAYERED 0x8DA7
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME 0x8CD1
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE 0x8CD0
+#define GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE 0x8212
+#define GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE 0x8217
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER 0x8CD4
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL 0x8CD2
+#define GL_FRAMEBUFFER_BINDING 0x8CA6
+#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
+#define GL_FRAMEBUFFER_DEFAULT 0x8218
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
+#define GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER 0x8CDB
+#define GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS 0x8DA8
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE 0x8D56
+#define GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER 0x8CDC
+#define GL_FRAMEBUFFER_SRGB 0x8DB9
+#define GL_FRAMEBUFFER_UNDEFINED 0x8219
+#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
+#define GL_FRONT 0x0404
+#define GL_FRONT_AND_BACK 0x0408
+#define GL_FRONT_FACE 0x0B46
+#define GL_FRONT_LEFT 0x0400
+#define GL_FRONT_RIGHT 0x0401
+#define GL_FUNC_ADD 0x8006
+#define GL_FUNC_REVERSE_SUBTRACT 0x800B
+#define GL_FUNC_SUBTRACT 0x800A
+#define GL_GEOMETRY_INPUT_TYPE 0x8917
+#define GL_GEOMETRY_OUTPUT_TYPE 0x8918
+#define GL_GEOMETRY_SHADER 0x8DD9
+#define GL_GEOMETRY_VERTICES_OUT 0x8916
+#define GL_GEQUAL 0x0206
+#define GL_GREATER 0x0204
+#define GL_GREEN 0x1904
+#define GL_GREEN_INTEGER 0x8D95
+#define GL_HALF_FLOAT 0x140B
+#define GL_INCR 0x1E02
+#define GL_INCR_WRAP 0x8507
+#define GL_INFO_LOG_LENGTH 0x8B84
+#define GL_INT 0x1404
+#define GL_INTERLEAVED_ATTRIBS 0x8C8C
+#define GL_INT_2_10_10_10_REV 0x8D9F
+#define GL_INT_SAMPLER_1D 0x8DC9
+#define GL_INT_SAMPLER_1D_ARRAY 0x8DCE
+#define GL_INT_SAMPLER_2D 0x8DCA
+#define GL_INT_SAMPLER_2D_ARRAY 0x8DCF
+#define GL_INT_SAMPLER_2D_MULTISAMPLE 0x9109
+#define GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY 0x910C
+#define GL_INT_SAMPLER_2D_RECT 0x8DCD
+#define GL_INT_SAMPLER_3D 0x8DCB
+#define GL_INT_SAMPLER_BUFFER 0x8DD0
+#define GL_INT_SAMPLER_CUBE 0x8DCC
+#define GL_INT_VEC2 0x8B53
+#define GL_INT_VEC3 0x8B54
+#define GL_INT_VEC4 0x8B55
+#define GL_INVALID_ENUM 0x0500
+#define GL_INVALID_FRAMEBUFFER_OPERATION 0x0506
+#define GL_INVALID_INDEX 0xFFFFFFFF
+#define GL_INVALID_OPERATION 0x0502
+#define GL_INVALID_VALUE 0x0501
+#define GL_INVERT 0x150A
+#define GL_KEEP 0x1E00
+#define GL_LAST_VERTEX_CONVENTION 0x8E4E
+#define GL_LEFT 0x0406
+#define GL_LEQUAL 0x0203
+#define GL_LESS 0x0201
+#define GL_LINE 0x1B01
+#define GL_LINEAR 0x2601
+#define GL_LINEAR_MIPMAP_LINEAR 0x2703
+#define GL_LINEAR_MIPMAP_NEAREST 0x2701
+#define GL_LINES 0x0001
+#define GL_LINES_ADJACENCY 0x000A
+#define GL_LINE_LOOP 0x0002
+#define GL_LINE_SMOOTH 0x0B20
+#define GL_LINE_SMOOTH_HINT 0x0C52
+#define GL_LINE_STRIP 0x0003
+#define GL_LINE_STRIP_ADJACENCY 0x000B
+#define GL_LINE_WIDTH 0x0B21
+#define GL_LINE_WIDTH_GRANULARITY 0x0B23
+#define GL_LINE_WIDTH_RANGE 0x0B22
+#define GL_LINK_STATUS 0x8B82
+#define GL_LOGIC_OP_MODE 0x0BF0
+#define GL_LOWER_LEFT 0x8CA1
+#define GL_MAJOR_VERSION 0x821B
+#define GL_MAP_FLUSH_EXPLICIT_BIT 0x0010
+#define GL_MAP_INVALIDATE_BUFFER_BIT 0x0008
+#define GL_MAP_INVALIDATE_RANGE_BIT 0x0004
+#define GL_MAP_READ_BIT 0x0001
+#define GL_MAP_UNSYNCHRONIZED_BIT 0x0020
+#define GL_MAP_WRITE_BIT 0x0002
+#define GL_MAX 0x8008
+#define GL_MAX_3D_TEXTURE_SIZE 0x8073
+#define GL_MAX_ARRAY_TEXTURE_LAYERS 0x88FF
+#define GL_MAX_CLIP_DISTANCES 0x0D32
+#define GL_MAX_COLOR_ATTACHMENTS 0x8CDF
+#define GL_MAX_COLOR_TEXTURE_SAMPLES 0x910E
+#define GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS 0x8A33
+#define GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS 0x8A32
+#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
+#define GL_MAX_COMBINED_UNIFORM_BLOCKS 0x8A2E
+#define GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS 0x8A31
+#define GL_MAX_CUBE_MAP_TEXTURE_SIZE 0x851C
+#define GL_MAX_DEPTH_TEXTURE_SAMPLES 0x910F
+#define GL_MAX_DRAW_BUFFERS 0x8824
+#define GL_MAX_DUAL_SOURCE_DRAW_BUFFERS 0x88FC
+#define GL_MAX_ELEMENTS_INDICES 0x80E9
+#define GL_MAX_ELEMENTS_VERTICES 0x80E8
+#define GL_MAX_FRAGMENT_INPUT_COMPONENTS 0x9125
+#define GL_MAX_FRAGMENT_UNIFORM_BLOCKS 0x8A2D
+#define GL_MAX_FRAGMENT_UNIFORM_COMPONENTS 0x8B49
+#define GL_MAX_GEOMETRY_INPUT_COMPONENTS 0x9123
+#define GL_MAX_GEOMETRY_OUTPUT_COMPONENTS 0x9124
+#define GL_MAX_GEOMETRY_OUTPUT_VERTICES 0x8DE0
+#define GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS 0x8C29
+#define GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS 0x8DE1
+#define GL_MAX_GEOMETRY_UNIFORM_BLOCKS 0x8A2C
+#define GL_MAX_GEOMETRY_UNIFORM_COMPONENTS 0x8DDF
+#define GL_MAX_INTEGER_SAMPLES 0x9110
+#define GL_MAX_PROGRAM_TEXEL_OFFSET 0x8905
+#define GL_MAX_RECTANGLE_TEXTURE_SIZE 0x84F8
+#define GL_MAX_RENDERBUFFER_SIZE 0x84E8
+#define GL_MAX_SAMPLES 0x8D57
+#define GL_MAX_SAMPLE_MASK_WORDS 0x8E59
+#define GL_MAX_SERVER_WAIT_TIMEOUT 0x9111
+#define GL_MAX_TEXTURE_BUFFER_SIZE 0x8C2B
+#define GL_MAX_TEXTURE_IMAGE_UNITS 0x8872
+#define GL_MAX_TEXTURE_LOD_BIAS 0x84FD
+#define GL_MAX_TEXTURE_SIZE 0x0D33
+#define GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS 0x8C8A
+#define GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS 0x8C8B
+#define GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS 0x8C80
+#define GL_MAX_UNIFORM_BLOCK_SIZE 0x8A30
+#define GL_MAX_UNIFORM_BUFFER_BINDINGS 0x8A2F
+#define GL_MAX_VARYING_COMPONENTS 0x8B4B
+#define GL_MAX_VARYING_FLOATS 0x8B4B
+#define GL_MAX_VERTEX_ATTRIBS 0x8869
+#define GL_MAX_VERTEX_OUTPUT_COMPONENTS 0x9122
+#define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS 0x8B4C
+#define GL_MAX_VERTEX_UNIFORM_BLOCKS 0x8A2B
+#define GL_MAX_VERTEX_UNIFORM_COMPONENTS 0x8B4A
+#define GL_MAX_VIEWPORT_DIMS 0x0D3A
+#define GL_MIN 0x8007
+#define GL_MINOR_VERSION 0x821C
+#define GL_MIN_PROGRAM_TEXEL_OFFSET 0x8904
+#define GL_MIRRORED_REPEAT 0x8370
+#define GL_MULTISAMPLE 0x809D
+#define GL_NAND 0x150E
+#define GL_NEAREST 0x2600
+#define GL_NEAREST_MIPMAP_LINEAR 0x2702
+#define GL_NEAREST_MIPMAP_NEAREST 0x2700
+#define GL_NEVER 0x0200
+#define GL_NICEST 0x1102
+#define GL_NONE 0
+#define GL_NOOP 0x1505
+#define GL_NOR 0x1508
+#define GL_NOTEQUAL 0x0205
+#define GL_NO_ERROR 0
+#define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
+#define GL_NUM_EXTENSIONS 0x821D
+#define GL_OBJECT_TYPE 0x9112
+#define GL_ONE 1
+#define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
+#define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
+#define GL_ONE_MINUS_DST_ALPHA 0x0305
+#define GL_ONE_MINUS_DST_COLOR 0x0307
+#define GL_ONE_MINUS_SRC1_ALPHA 0x88FB
+#define GL_ONE_MINUS_SRC1_COLOR 0x88FA
+#define GL_ONE_MINUS_SRC_ALPHA 0x0303
+#define GL_ONE_MINUS_SRC_COLOR 0x0301
+#define GL_OR 0x1507
+#define GL_OR_INVERTED 0x150D
+#define GL_OR_REVERSE 0x150B
+#define GL_OUT_OF_MEMORY 0x0505
+#define GL_PACK_ALIGNMENT 0x0D05
+#define GL_PACK_IMAGE_HEIGHT 0x806C
+#define GL_PACK_LSB_FIRST 0x0D01
+#define GL_PACK_ROW_LENGTH 0x0D02
+#define GL_PACK_SKIP_IMAGES 0x806B
+#define GL_PACK_SKIP_PIXELS 0x0D04
+#define GL_PACK_SKIP_ROWS 0x0D03
+#define GL_PACK_SWAP_BYTES 0x0D00
+#define GL_PIXEL_PACK_BUFFER 0x88EB
+#define GL_PIXEL_PACK_BUFFER_BINDING 0x88ED
+#define GL_PIXEL_UNPACK_BUFFER 0x88EC
+#define GL_PIXEL_UNPACK_BUFFER_BINDING 0x88EF
+#define GL_POINT 0x1B00
+#define GL_POINTS 0x0000
+#define GL_POINT_FADE_THRESHOLD_SIZE 0x8128
+#define GL_POINT_SIZE 0x0B11
+#define GL_POINT_SIZE_GRANULARITY 0x0B13
+#define GL_POINT_SIZE_RANGE 0x0B12
+#define GL_POINT_SPRITE_COORD_ORIGIN 0x8CA0
+#define GL_POLYGON_MODE 0x0B40
+#define GL_POLYGON_OFFSET_FACTOR 0x8038
+#define GL_POLYGON_OFFSET_FILL 0x8037
+#define GL_POLYGON_OFFSET_LINE 0x2A02
+#define GL_POLYGON_OFFSET_POINT 0x2A01
+#define GL_POLYGON_OFFSET_UNITS 0x2A00
+#define GL_POLYGON_SMOOTH 0x0B41
+#define GL_POLYGON_SMOOTH_HINT 0x0C53
+#define GL_PRIMITIVES_GENERATED 0x8C87
+#define GL_PRIMITIVE_RESTART 0x8F9D
+#define GL_PRIMITIVE_RESTART_INDEX 0x8F9E
+#define GL_PROGRAM_POINT_SIZE 0x8642
+#define GL_PROVOKING_VERTEX 0x8E4F
+#define GL_PROXY_TEXTURE_1D 0x8063
+#define GL_PROXY_TEXTURE_1D_ARRAY 0x8C19
+#define GL_PROXY_TEXTURE_2D 0x8064
+#define GL_PROXY_TEXTURE_2D_ARRAY 0x8C1B
+#define GL_PROXY_TEXTURE_2D_MULTISAMPLE 0x9101
+#define GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY 0x9103
+#define GL_PROXY_TEXTURE_3D 0x8070
+#define GL_PROXY_TEXTURE_CUBE_MAP 0x851B
+#define GL_PROXY_TEXTURE_RECTANGLE 0x84F7
+#define GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION 0x8E4C
+#define GL_QUERY_BY_REGION_NO_WAIT 0x8E16
+#define GL_QUERY_BY_REGION_WAIT 0x8E15
+#define GL_QUERY_COUNTER_BITS 0x8864
+#define GL_QUERY_NO_WAIT 0x8E14
+#define GL_QUERY_RESULT 0x8866
+#define GL_QUERY_RESULT_AVAILABLE 0x8867
+#define GL_QUERY_WAIT 0x8E13
+#define GL_R11F_G11F_B10F 0x8C3A
+#define GL_R16 0x822A
+#define GL_R16F 0x822D
+#define GL_R16I 0x8233
+#define GL_R16UI 0x8234
+#define GL_R16_SNORM 0x8F98
+#define GL_R32F 0x822E
+#define GL_R32I 0x8235
+#define GL_R32UI 0x8236
+#define GL_R3_G3_B2 0x2A10
+#define GL_R8 0x8229
+#define GL_R8I 0x8231
+#define GL_R8UI 0x8232
+#define GL_R8_SNORM 0x8F94
+#define GL_RASTERIZER_DISCARD 0x8C89
+#define GL_READ_BUFFER 0x0C02
+#define GL_READ_FRAMEBUFFER 0x8CA8
+#define GL_READ_FRAMEBUFFER_BINDING 0x8CAA
+#define GL_READ_ONLY 0x88B8
+#define GL_READ_WRITE 0x88BA
+#define GL_RED 0x1903
+#define GL_RED_INTEGER 0x8D94
+#define GL_RENDERBUFFER 0x8D41
+#define GL_RENDERBUFFER_ALPHA_SIZE 0x8D53
+#define GL_RENDERBUFFER_BINDING 0x8CA7
+#define GL_RENDERBUFFER_BLUE_SIZE 0x8D52
+#define GL_RENDERBUFFER_DEPTH_SIZE 0x8D54
+#define GL_RENDERBUFFER_GREEN_SIZE 0x8D51
+#define GL_RENDERBUFFER_HEIGHT 0x8D43
+#define GL_RENDERBUFFER_INTERNAL_FORMAT 0x8D44
+#define GL_RENDERBUFFER_RED_SIZE 0x8D50
+#define GL_RENDERBUFFER_SAMPLES 0x8CAB
+#define GL_RENDERBUFFER_STENCIL_SIZE 0x8D55
+#define GL_RENDERBUFFER_WIDTH 0x8D42
+#define GL_RENDERER 0x1F01
+#define GL_REPEAT 0x2901
+#define GL_REPLACE 0x1E01
+#define GL_RG 0x8227
+#define GL_RG16 0x822C
+#define GL_RG16F 0x822F
+#define GL_RG16I 0x8239
+#define GL_RG16UI 0x823A
+#define GL_RG16_SNORM 0x8F99
+#define GL_RG32F 0x8230
+#define GL_RG32I 0x823B
+#define GL_RG32UI 0x823C
+#define GL_RG8 0x822B
+#define GL_RG8I 0x8237
+#define GL_RG8UI 0x8238
+#define GL_RG8_SNORM 0x8F95
+#define GL_RGB 0x1907
+#define GL_RGB10 0x8052
+#define GL_RGB10_A2 0x8059
+#define GL_RGB10_A2UI 0x906F
+#define GL_RGB12 0x8053
+#define GL_RGB16 0x8054
+#define GL_RGB16F 0x881B
+#define GL_RGB16I 0x8D89
+#define GL_RGB16UI 0x8D77
+#define GL_RGB16_SNORM 0x8F9A
+#define GL_RGB32F 0x8815
+#define GL_RGB32I 0x8D83
+#define GL_RGB32UI 0x8D71
+#define GL_RGB4 0x804F
+#define GL_RGB5 0x8050
+#define GL_RGB5_A1 0x8057
+#define GL_RGB8 0x8051
+#define GL_RGB8I 0x8D8F
+#define GL_RGB8UI 0x8D7D
+#define GL_RGB8_SNORM 0x8F96
+#define GL_RGB9_E5 0x8C3D
+#define GL_RGBA 0x1908
+#define GL_RGBA12 0x805A
+#define GL_RGBA16 0x805B
+#define GL_RGBA16F 0x881A
+#define GL_RGBA16I 0x8D88
+#define GL_RGBA16UI 0x8D76
+#define GL_RGBA16_SNORM 0x8F9B
+#define GL_RGBA2 0x8055
+#define GL_RGBA32F 0x8814
+#define GL_RGBA32I 0x8D82
+#define GL_RGBA32UI 0x8D70
+#define GL_RGBA4 0x8056
+#define GL_RGBA8 0x8058
+#define GL_RGBA8I 0x8D8E
+#define GL_RGBA8UI 0x8D7C
+#define GL_RGBA8_SNORM 0x8F97
+#define GL_RGBA_INTEGER 0x8D99
+#define GL_RGB_INTEGER 0x8D98
+#define GL_RG_INTEGER 0x8228
+#define GL_RIGHT 0x0407
+#define GL_SAMPLER_1D 0x8B5D
+#define GL_SAMPLER_1D_ARRAY 0x8DC0
+#define GL_SAMPLER_1D_ARRAY_SHADOW 0x8DC3
+#define GL_SAMPLER_1D_SHADOW 0x8B61
+#define GL_SAMPLER_2D 0x8B5E
+#define GL_SAMPLER_2D_ARRAY 0x8DC1
+#define GL_SAMPLER_2D_ARRAY_SHADOW 0x8DC4
+#define GL_SAMPLER_2D_MULTISAMPLE 0x9108
+#define GL_SAMPLER_2D_MULTISAMPLE_ARRAY 0x910B
+#define GL_SAMPLER_2D_RECT 0x8B63
+#define GL_SAMPLER_2D_RECT_SHADOW 0x8B64
+#define GL_SAMPLER_2D_SHADOW 0x8B62
+#define GL_SAMPLER_3D 0x8B5F
+#define GL_SAMPLER_BINDING 0x8919
+#define GL_SAMPLER_BUFFER 0x8DC2
+#define GL_SAMPLER_CUBE 0x8B60
+#define GL_SAMPLER_CUBE_SHADOW 0x8DC5
+#define GL_SAMPLES 0x80A9
+#define GL_SAMPLES_PASSED 0x8914
+#define GL_SAMPLE_ALPHA_TO_COVERAGE 0x809E
+#define GL_SAMPLE_ALPHA_TO_ONE 0x809F
+#define GL_SAMPLE_BUFFERS 0x80A8
+#define GL_SAMPLE_COVERAGE 0x80A0
+#define GL_SAMPLE_COVERAGE_INVERT 0x80AB
+#define GL_SAMPLE_COVERAGE_VALUE 0x80AA
+#define GL_SAMPLE_MASK 0x8E51
+#define GL_SAMPLE_MASK_VALUE 0x8E52
+#define GL_SAMPLE_POSITION 0x8E50
+#define GL_SCISSOR_BOX 0x0C10
+#define GL_SCISSOR_TEST 0x0C11
+#define GL_SEPARATE_ATTRIBS 0x8C8D
+#define GL_SET 0x150F
+#define GL_SHADER_SOURCE_LENGTH 0x8B88
+#define GL_SHADER_TYPE 0x8B4F
+#define GL_SHADING_LANGUAGE_VERSION 0x8B8C
+#define GL_SHORT 0x1402
+#define GL_SIGNALED 0x9119
+#define GL_SIGNED_NORMALIZED 0x8F9C
+#define GL_SMOOTH_LINE_WIDTH_GRANULARITY 0x0B23
+#define GL_SMOOTH_LINE_WIDTH_RANGE 0x0B22
+#define GL_SMOOTH_POINT_SIZE_GRANULARITY 0x0B13
+#define GL_SMOOTH_POINT_SIZE_RANGE 0x0B12
+#define GL_SRC1_ALPHA 0x8589
+#define GL_SRC1_COLOR 0x88F9
+#define GL_SRC_ALPHA 0x0302
+#define GL_SRC_ALPHA_SATURATE 0x0308
+#define GL_SRC_COLOR 0x0300
+#define GL_SRGB 0x8C40
+#define GL_SRGB8 0x8C41
+#define GL_SRGB8_ALPHA8 0x8C43
+#define GL_SRGB_ALPHA 0x8C42
+#define GL_STATIC_COPY 0x88E6
+#define GL_STATIC_DRAW 0x88E4
+#define GL_STATIC_READ 0x88E5
+#define GL_STENCIL 0x1802
+#define GL_STENCIL_ATTACHMENT 0x8D20
+#define GL_STENCIL_BACK_FAIL 0x8801
+#define GL_STENCIL_BACK_FUNC 0x8800
+#define GL_STENCIL_BACK_PASS_DEPTH_FAIL 0x8802
+#define GL_STENCIL_BACK_PASS_DEPTH_PASS 0x8803
+#define GL_STENCIL_BACK_REF 0x8CA3
+#define GL_STENCIL_BACK_VALUE_MASK 0x8CA4
+#define GL_STENCIL_BACK_WRITEMASK 0x8CA5
+#define GL_STENCIL_BUFFER_BIT 0x00000400
+#define GL_STENCIL_CLEAR_VALUE 0x0B91
+#define GL_STENCIL_FAIL 0x0B94
+#define GL_STENCIL_FUNC 0x0B92
+#define GL_STENCIL_INDEX 0x1901
+#define GL_STENCIL_INDEX1 0x8D46
+#define GL_STENCIL_INDEX16 0x8D49
+#define GL_STENCIL_INDEX4 0x8D47
+#define GL_STENCIL_INDEX8 0x8D48
+#define GL_STENCIL_PASS_DEPTH_FAIL 0x0B95
+#define GL_STENCIL_PASS_DEPTH_PASS 0x0B96
+#define GL_STENCIL_REF 0x0B97
+#define GL_STENCIL_TEST 0x0B90
+#define GL_STENCIL_VALUE_MASK 0x0B93
+#define GL_STENCIL_WRITEMASK 0x0B98
+#define GL_STEREO 0x0C33
+#define GL_STREAM_COPY 0x88E2
+#define GL_STREAM_DRAW 0x88E0
+#define GL_STREAM_READ 0x88E1
+#define GL_SUBPIXEL_BITS 0x0D50
+#define GL_SYNC_CONDITION 0x9113
+#define GL_SYNC_FENCE 0x9116
+#define GL_SYNC_FLAGS 0x9115
+#define GL_SYNC_FLUSH_COMMANDS_BIT 0x00000001
+#define GL_SYNC_GPU_COMMANDS_COMPLETE 0x9117
+#define GL_SYNC_STATUS 0x9114
+#define GL_TEXTURE 0x1702
+#define GL_TEXTURE0 0x84C0
+#define GL_TEXTURE1 0x84C1
+#define GL_TEXTURE10 0x84CA
+#define GL_TEXTURE11 0x84CB
+#define GL_TEXTURE12 0x84CC
+#define GL_TEXTURE13 0x84CD
+#define GL_TEXTURE14 0x84CE
+#define GL_TEXTURE15 0x84CF
+#define GL_TEXTURE16 0x84D0
+#define GL_TEXTURE17 0x84D1
+#define GL_TEXTURE18 0x84D2
+#define GL_TEXTURE19 0x84D3
+#define GL_TEXTURE2 0x84C2
+#define GL_TEXTURE20 0x84D4
+#define GL_TEXTURE21 0x84D5
+#define GL_TEXTURE22 0x84D6
+#define GL_TEXTURE23 0x84D7
+#define GL_TEXTURE24 0x84D8
+#define GL_TEXTURE25 0x84D9
+#define GL_TEXTURE26 0x84DA
+#define GL_TEXTURE27 0x84DB
+#define GL_TEXTURE28 0x84DC
+#define GL_TEXTURE29 0x84DD
+#define GL_TEXTURE3 0x84C3
+#define GL_TEXTURE30 0x84DE
+#define GL_TEXTURE31 0x84DF
+#define GL_TEXTURE4 0x84C4
+#define GL_TEXTURE5 0x84C5
+#define GL_TEXTURE6 0x84C6
+#define GL_TEXTURE7 0x84C7
+#define GL_TEXTURE8 0x84C8
+#define GL_TEXTURE9 0x84C9
+#define GL_TEXTURE_1D 0x0DE0
+#define GL_TEXTURE_1D_ARRAY 0x8C18
+#define GL_TEXTURE_2D 0x0DE1
+#define GL_TEXTURE_2D_ARRAY 0x8C1A
+#define GL_TEXTURE_2D_MULTISAMPLE 0x9100
+#define GL_TEXTURE_2D_MULTISAMPLE_ARRAY 0x9102
+#define GL_TEXTURE_3D 0x806F
+#define GL_TEXTURE_ALPHA_SIZE 0x805F
+#define GL_TEXTURE_ALPHA_TYPE 0x8C13
+#define GL_TEXTURE_BASE_LEVEL 0x813C
+#define GL_TEXTURE_BINDING_1D 0x8068
+#define GL_TEXTURE_BINDING_1D_ARRAY 0x8C1C
+#define GL_TEXTURE_BINDING_2D 0x8069
+#define GL_TEXTURE_BINDING_2D_ARRAY 0x8C1D
+#define GL_TEXTURE_BINDING_2D_MULTISAMPLE 0x9104
+#define GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY 0x9105
+#define GL_TEXTURE_BINDING_3D 0x806A
+#define GL_TEXTURE_BINDING_BUFFER 0x8C2C
+#define GL_TEXTURE_BINDING_CUBE_MAP 0x8514
+#define GL_TEXTURE_BINDING_RECTANGLE 0x84F6
+#define GL_TEXTURE_BLUE_SIZE 0x805E
+#define GL_TEXTURE_BLUE_TYPE 0x8C12
+#define GL_TEXTURE_BORDER_COLOR 0x1004
+#define GL_TEXTURE_BUFFER 0x8C2A
+#define GL_TEXTURE_BUFFER_DATA_STORE_BINDING 0x8C2D
+#define GL_TEXTURE_COMPARE_FUNC 0x884D
+#define GL_TEXTURE_COMPARE_MODE 0x884C
+#define GL_TEXTURE_COMPRESSED 0x86A1
+#define GL_TEXTURE_COMPRESSED_IMAGE_SIZE 0x86A0
+#define GL_TEXTURE_COMPRESSION_HINT 0x84EF
+#define GL_TEXTURE_CUBE_MAP 0x8513
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519
+#define GL_TEXTURE_CUBE_MAP_SEAMLESS 0x884F
+#define GL_TEXTURE_DEPTH 0x8071
+#define GL_TEXTURE_DEPTH_SIZE 0x884A
+#define GL_TEXTURE_DEPTH_TYPE 0x8C16
+#define GL_TEXTURE_FIXED_SAMPLE_LOCATIONS 0x9107
+#define GL_TEXTURE_GREEN_SIZE 0x805D
+#define GL_TEXTURE_GREEN_TYPE 0x8C11
+#define GL_TEXTURE_HEIGHT 0x1001
+#define GL_TEXTURE_INTERNAL_FORMAT 0x1003
+#define GL_TEXTURE_LOD_BIAS 0x8501
+#define GL_TEXTURE_MAG_FILTER 0x2800
+#define GL_TEXTURE_MAX_LEVEL 0x813D
+#define GL_TEXTURE_MAX_LOD 0x813B
+#define GL_TEXTURE_MIN_FILTER 0x2801
+#define GL_TEXTURE_MIN_LOD 0x813A
+#define GL_TEXTURE_RECTANGLE 0x84F5
+#define GL_TEXTURE_RED_SIZE 0x805C
+#define GL_TEXTURE_RED_TYPE 0x8C10
+#define GL_TEXTURE_SAMPLES 0x9106
+#define GL_TEXTURE_SHARED_SIZE 0x8C3F
+#define GL_TEXTURE_STENCIL_SIZE 0x88F1
+#define GL_TEXTURE_SWIZZLE_A 0x8E45
+#define GL_TEXTURE_SWIZZLE_B 0x8E44
+#define GL_TEXTURE_SWIZZLE_G 0x8E43
+#define GL_TEXTURE_SWIZZLE_R 0x8E42
+#define GL_TEXTURE_SWIZZLE_RGBA 0x8E46
+#define GL_TEXTURE_WIDTH 0x1000
+#define GL_TEXTURE_WRAP_R 0x8072
+#define GL_TEXTURE_WRAP_S 0x2802
+#define GL_TEXTURE_WRAP_T 0x2803
+#define GL_TIMEOUT_EXPIRED 0x911B
+#define GL_TIMEOUT_IGNORED 0xFFFFFFFFFFFFFFFF
+#define GL_TIMESTAMP 0x8E28
+#define GL_TIME_ELAPSED 0x88BF
+#define GL_TRANSFORM_FEEDBACK_BUFFER 0x8C8E
+#define GL_TRANSFORM_FEEDBACK_BUFFER_BINDING 0x8C8F
+#define GL_TRANSFORM_FEEDBACK_BUFFER_MODE 0x8C7F
+#define GL_TRANSFORM_FEEDBACK_BUFFER_SIZE 0x8C85
+#define GL_TRANSFORM_FEEDBACK_BUFFER_START 0x8C84
+#define GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN 0x8C88
+#define GL_TRANSFORM_FEEDBACK_VARYINGS 0x8C83
+#define GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH 0x8C76
+#define GL_TRIANGLES 0x0004
+#define GL_TRIANGLES_ADJACENCY 0x000C
+#define GL_TRIANGLE_FAN 0x0006
+#define GL_TRIANGLE_STRIP 0x0005
+#define GL_TRIANGLE_STRIP_ADJACENCY 0x000D
+#define GL_TRUE 1
+#define GL_UNIFORM_ARRAY_STRIDE 0x8A3C
+#define GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS 0x8A42
+#define GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES 0x8A43
+#define GL_UNIFORM_BLOCK_BINDING 0x8A3F
+#define GL_UNIFORM_BLOCK_DATA_SIZE 0x8A40
+#define GL_UNIFORM_BLOCK_INDEX 0x8A3A
+#define GL_UNIFORM_BLOCK_NAME_LENGTH 0x8A41
+#define GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER 0x8A46
+#define GL_UNIFORM_BLOCK_REFERENCED_BY_GEOMETRY_SHADER 0x8A45
+#define GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER 0x8A44
+#define GL_UNIFORM_BUFFER 0x8A11
+#define GL_UNIFORM_BUFFER_BINDING 0x8A28
+#define GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT 0x8A34
+#define GL_UNIFORM_BUFFER_SIZE 0x8A2A
+#define GL_UNIFORM_BUFFER_START 0x8A29
+#define GL_UNIFORM_IS_ROW_MAJOR 0x8A3E
+#define GL_UNIFORM_MATRIX_STRIDE 0x8A3D
+#define GL_UNIFORM_NAME_LENGTH 0x8A39
+#define GL_UNIFORM_OFFSET 0x8A3B
+#define GL_UNIFORM_SIZE 0x8A38
+#define GL_UNIFORM_TYPE 0x8A37
+#define GL_UNPACK_ALIGNMENT 0x0CF5
+#define GL_UNPACK_IMAGE_HEIGHT 0x806E
+#define GL_UNPACK_LSB_FIRST 0x0CF1
+#define GL_UNPACK_ROW_LENGTH 0x0CF2
+#define GL_UNPACK_SKIP_IMAGES 0x806D
+#define GL_UNPACK_SKIP_PIXELS 0x0CF4
+#define GL_UNPACK_SKIP_ROWS 0x0CF3
+#define GL_UNPACK_SWAP_BYTES 0x0CF0
+#define GL_UNSIGNALED 0x9118
+#define GL_UNSIGNED_BYTE 0x1401
+#define GL_UNSIGNED_BYTE_2_3_3_REV 0x8362
+#define GL_UNSIGNED_BYTE_3_3_2 0x8032
+#define GL_UNSIGNED_INT 0x1405
+#define GL_UNSIGNED_INT_10F_11F_11F_REV 0x8C3B
+#define GL_UNSIGNED_INT_10_10_10_2 0x8036
+#define GL_UNSIGNED_INT_24_8 0x84FA
+#define GL_UNSIGNED_INT_2_10_10_10_REV 0x8368
+#define GL_UNSIGNED_INT_5_9_9_9_REV 0x8C3E
+#define GL_UNSIGNED_INT_8_8_8_8 0x8035
+#define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
+#define GL_UNSIGNED_INT_SAMPLER_1D 0x8DD1
+#define GL_UNSIGNED_INT_SAMPLER_1D_ARRAY 0x8DD6
+#define GL_UNSIGNED_INT_SAMPLER_2D 0x8DD2
+#define GL_UNSIGNED_INT_SAMPLER_2D_ARRAY 0x8DD7
+#define GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE 0x910A
+#define GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY 0x910D
+#define GL_UNSIGNED_INT_SAMPLER_2D_RECT 0x8DD5
+#define GL_UNSIGNED_INT_SAMPLER_3D 0x8DD3
+#define GL_UNSIGNED_INT_SAMPLER_BUFFER 0x8DD8
+#define GL_UNSIGNED_INT_SAMPLER_CUBE 0x8DD4
+#define GL_UNSIGNED_INT_VEC2 0x8DC6
+#define GL_UNSIGNED_INT_VEC3 0x8DC7
+#define GL_UNSIGNED_INT_VEC4 0x8DC8
+#define GL_UNSIGNED_NORMALIZED 0x8C17
+#define GL_UNSIGNED_SHORT 0x1403
+#define GL_UNSIGNED_SHORT_1_5_5_5_REV 0x8366
+#define GL_UNSIGNED_SHORT_4_4_4_4 0x8033
+#define GL_UNSIGNED_SHORT_4_4_4_4_REV 0x8365
+#define GL_UNSIGNED_SHORT_5_5_5_1 0x8034
+#define GL_UNSIGNED_SHORT_5_6_5 0x8363
+#define GL_UNSIGNED_SHORT_5_6_5_REV 0x8364
+#define GL_UPPER_LEFT 0x8CA2
+#define GL_VALIDATE_STATUS 0x8B83
+#define GL_VENDOR 0x1F00
+#define GL_VERSION 0x1F02
+#define GL_VERTEX_ARRAY_BINDING 0x85B5
+#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F
+#define GL_VERTEX_ATTRIB_ARRAY_DIVISOR 0x88FE
+#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
+#define GL_VERTEX_ATTRIB_ARRAY_INTEGER 0x88FD
+#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
+#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645
+#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623
+#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624
+#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625
+#define GL_VERTEX_PROGRAM_POINT_SIZE 0x8642
+#define GL_VERTEX_SHADER 0x8B31
+#define GL_VIEWPORT 0x0BA2
+#define GL_WAIT_FAILED 0x911D
+#define GL_WRITE_ONLY 0x88B9
+#define GL_XOR 0x1506
+#define GL_ZERO 0
+
+
+#ifndef __khrplatform_h_
+#define __khrplatform_h_
+
+/*
+** Copyright (c) 2008-2018 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.
+*/
+
+/* Khronos platform-specific types and definitions.
+ *
+ * The master copy of khrplatform.h is maintained in the Khronos EGL
+ * Registry repository at https://github.com/KhronosGroup/EGL-Registry
+ * The last semantic modification to khrplatform.h was at commit ID:
+ *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
+ *
+ * Adopters may modify this file to suit their platform. Adopters are
+ * encouraged to submit platform specific modifications to the Khronos
+ * group so that they can be included in future versions of this file.
+ * Please submit changes by filing pull requests or issues on
+ * the EGL Registry repository linked above.
+ *
+ *
+ * See the Implementer's Guidelines for information about where this file
+ * should be located on your system and for more details of its use:
+ *    http://www.khronos.org/registry/implementers_guide.pdf
+ *
+ * This file should be included as
+ *        #include <KHR/khrplatform.h>
+ * by Khronos client API header files that use its types and defines.
+ *
+ * The types in khrplatform.h should only be used to define API-specific types.
+ *
+ * Types defined in khrplatform.h:
+ *    khronos_int8_t              signed   8  bit
+ *    khronos_uint8_t             unsigned 8  bit
+ *    khronos_int16_t             signed   16 bit
+ *    khronos_uint16_t            unsigned 16 bit
+ *    khronos_int32_t             signed   32 bit
+ *    khronos_uint32_t            unsigned 32 bit
+ *    khronos_int64_t             signed   64 bit
+ *    khronos_uint64_t            unsigned 64 bit
+ *    khronos_intptr_t            signed   same number of bits as a pointer
+ *    khronos_uintptr_t           unsigned same number of bits as a pointer
+ *    khronos_ssize_t             signed   size
+ *    khronos_usize_t             unsigned size
+ *    khronos_float_t             signed   32 bit floating point
+ *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
+ *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
+ *                                         nanoseconds
+ *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
+ *    khronos_boolean_enum_t      enumerated boolean type. This should
+ *      only be used as a base type when a client API's boolean type is
+ *      an enum. Client APIs which use an integer or other type for
+ *      booleans cannot use this as the base type for their boolean.
+ *
+ * Tokens defined in khrplatform.h:
+ *
+ *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
+ *
+ *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
+ *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
+ *
+ * Calling convention macros defined in this file:
+ *    KHRONOS_APICALL
+ *    KHRONOS_GLAD_API_PTR
+ *    KHRONOS_APIATTRIBUTES
+ *
+ * These may be used in function prototypes as:
+ *
+ *      KHRONOS_APICALL void KHRONOS_GLAD_API_PTR funcname(
+ *                                  int arg1,
+ *                                  int arg2) KHRONOS_APIATTRIBUTES;
+ */
+
+#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
+#   define KHRONOS_STATIC 1
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APICALL
+ *-------------------------------------------------------------------------
+ * This precedes the return type of the function in the function prototype.
+ */
+#if defined(KHRONOS_STATIC)
+    /* If the preprocessor constant KHRONOS_STATIC is defined, make the
+     * header compatible with static linking. */
+#   define KHRONOS_APICALL
+#elif defined(_WIN32)
+#   define KHRONOS_APICALL __declspec(dllimport)
+#elif defined (__SYMBIAN32__)
+#   define KHRONOS_APICALL IMPORT_C
+#elif defined(__ANDROID__)
+#   define KHRONOS_APICALL __attribute__((visibility("default")))
+#else
+#   define KHRONOS_APICALL
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_GLAD_API_PTR
+ *-------------------------------------------------------------------------
+ * This follows the return type of the function  and precedes the function
+ * name in the function prototype.
+ */
+#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
+    /* Win32 but not WinCE */
+#   define KHRONOS_GLAD_API_PTR __stdcall
+#else
+#   define KHRONOS_GLAD_API_PTR
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIATTRIBUTES
+ *-------------------------------------------------------------------------
+ * This follows the closing parenthesis of the function prototype arguments.
+ */
+#if defined (__ARMCC_2__)
+#define KHRONOS_APIATTRIBUTES __softfp
+#else
+#define KHRONOS_APIATTRIBUTES
+#endif
+
+/*-------------------------------------------------------------------------
+ * basic type definitions
+ *-----------------------------------------------------------------------*/
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
+
+
+/*
+ * Using <stdint.h>
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+/*
+ * To support platform where unsigned long cannot be used interchangeably with
+ * inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
+ * Ideally, we could just use (u)intptr_t everywhere, but this could result in
+ * ABI breakage if khronos_uintptr_t is changed from unsigned long to
+ * unsigned long long or similar (this results in different C++ name mangling).
+ * To avoid changes for existing platforms, we restrict usage of intptr_t to
+ * platforms where the size of a pointer is larger than the size of long.
+ */
+#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
+#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
+#define KHRONOS_USE_INTPTR_T
+#endif
+#endif
+
+#elif defined(__VMS ) || defined(__sgi)
+
+/*
+ * Using <inttypes.h>
+ */
+#include <inttypes.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
+
+/*
+ * Win32
+ */
+typedef __int32                 khronos_int32_t;
+typedef unsigned __int32        khronos_uint32_t;
+typedef __int64                 khronos_int64_t;
+typedef unsigned __int64        khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__sun__) || defined(__digital__)
+
+/*
+ * Sun or Digital
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#if defined(__arch64__) || defined(_LP64)
+typedef long int                khronos_int64_t;
+typedef unsigned long int       khronos_uint64_t;
+#else
+typedef long long int           khronos_int64_t;
+typedef unsigned long long int  khronos_uint64_t;
+#endif /* __arch64__ */
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif 0
+
+/*
+ * Hypothetical platform with no float or int64 support
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#define KHRONOS_SUPPORT_INT64   0
+#define KHRONOS_SUPPORT_FLOAT   0
+
+#else
+
+/*
+ * Generic fallback
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#endif
+
+
+/*
+ * Types that are (so far) the same on all platforms
+ */
+typedef signed   char          khronos_int8_t;
+typedef unsigned char          khronos_uint8_t;
+typedef signed   short int     khronos_int16_t;
+typedef unsigned short int     khronos_uint16_t;
+
+/*
+ * Types that differ between LLP64 and LP64 architectures - in LLP64,
+ * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
+ * to be the only LLP64 architecture in current use.
+ */
+#ifdef KHRONOS_USE_INTPTR_T
+typedef intptr_t               khronos_intptr_t;
+typedef uintptr_t              khronos_uintptr_t;
+#elif defined(_WIN64)
+typedef signed   long long int khronos_intptr_t;
+typedef unsigned long long int khronos_uintptr_t;
+#else
+typedef signed   long  int     khronos_intptr_t;
+typedef unsigned long  int     khronos_uintptr_t;
+#endif
+
+#if defined(_WIN64)
+typedef signed   long long int khronos_ssize_t;
+typedef unsigned long long int khronos_usize_t;
+#else
+typedef signed   long  int     khronos_ssize_t;
+typedef unsigned long  int     khronos_usize_t;
+#endif
+
+#if KHRONOS_SUPPORT_FLOAT
+/*
+ * Float type
+ */
+typedef          float         khronos_float_t;
+#endif
+
+#if KHRONOS_SUPPORT_INT64
+/* Time types
+ *
+ * These types can be used to represent a time interval in nanoseconds or
+ * an absolute Unadjusted System Time.  Unadjusted System Time is the number
+ * of nanoseconds since some arbitrary system event (e.g. since the last
+ * time the system booted).  The Unadjusted System Time is an unsigned
+ * 64 bit value that wraps back to 0 every 584 years.  Time intervals
+ * may be either signed or unsigned.
+ */
+typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
+typedef khronos_int64_t        khronos_stime_nanoseconds_t;
+#endif
+
+/*
+ * Dummy value used to pad enum types to 32 bits.
+ */
+#ifndef KHRONOS_MAX_ENUM
+#define KHRONOS_MAX_ENUM 0x7FFFFFFF
+#endif
+
+/*
+ * Enumerated boolean type
+ *
+ * Values other than zero should be considered to be true.  Therefore
+ * comparisons should not be made against KHRONOS_TRUE.
+ */
+typedef enum {
+    KHRONOS_FALSE = 0,
+    KHRONOS_TRUE  = 1,
+    KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
+} khronos_boolean_enum_t;
+
+#endif /* __khrplatform_h_ */
+typedef unsigned int GLenum;
+typedef unsigned char GLboolean;
+typedef unsigned int GLbitfield;
+typedef void GLvoid;
+typedef khronos_int8_t GLbyte;
+typedef khronos_uint8_t GLubyte;
+typedef khronos_int16_t GLshort;
+typedef khronos_uint16_t GLushort;
+typedef int GLint;
+typedef unsigned int GLuint;
+typedef khronos_int32_t GLclampx;
+typedef int GLsizei;
+typedef khronos_float_t GLfloat;
+typedef khronos_float_t GLclampf;
+typedef double GLdouble;
+typedef double GLclampd;
+typedef void *GLeglClientBufferEXT;
+typedef void *GLeglImageOES;
+typedef char GLchar;
+typedef char GLcharARB;
+#ifdef __APPLE__
+typedef void *GLhandleARB;
+#else
+typedef unsigned int GLhandleARB;
+#endif
+typedef khronos_uint16_t GLhalf;
+typedef khronos_uint16_t GLhalfARB;
+typedef khronos_int32_t GLfixed;
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ > 1060)
+typedef khronos_intptr_t GLintptr;
+#else
+typedef khronos_intptr_t GLintptr;
+#endif
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ > 1060)
+typedef khronos_intptr_t GLintptrARB;
+#else
+typedef khronos_intptr_t GLintptrARB;
+#endif
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ > 1060)
+typedef khronos_ssize_t GLsizeiptr;
+#else
+typedef khronos_ssize_t GLsizeiptr;
+#endif
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ > 1060)
+typedef khronos_ssize_t GLsizeiptrARB;
+#else
+typedef khronos_ssize_t GLsizeiptrARB;
+#endif
+typedef khronos_int64_t GLint64;
+typedef khronos_int64_t GLint64EXT;
+typedef khronos_uint64_t GLuint64;
+typedef khronos_uint64_t GLuint64EXT;
+typedef struct __GLsync *GLsync;
+struct _cl_context;
+struct _cl_event;
+typedef void (GLAD_API_PTR *GLDEBUGPROC)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
+typedef void (GLAD_API_PTR *GLDEBUGPROCARB)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
+typedef void (GLAD_API_PTR *GLDEBUGPROCKHR)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
+typedef void (GLAD_API_PTR *GLDEBUGPROCAMD)(GLuint id,GLenum category,GLenum severity,GLsizei length,const GLchar *message,void *userParam);
+typedef unsigned short GLhalfNV;
+typedef GLintptr GLvdpauSurfaceNV;
+typedef void (GLAD_API_PTR *GLVULKANPROCNV)(void);
+
+
+#define GL_VERSION_1_0 1
+GLAD_API_CALL int GLAD_GL_VERSION_1_0;
+#define GL_VERSION_1_1 1
+GLAD_API_CALL int GLAD_GL_VERSION_1_1;
+#define GL_VERSION_1_2 1
+GLAD_API_CALL int GLAD_GL_VERSION_1_2;
+#define GL_VERSION_1_3 1
+GLAD_API_CALL int GLAD_GL_VERSION_1_3;
+#define GL_VERSION_1_4 1
+GLAD_API_CALL int GLAD_GL_VERSION_1_4;
+#define GL_VERSION_1_5 1
+GLAD_API_CALL int GLAD_GL_VERSION_1_5;
+#define GL_VERSION_2_0 1
+GLAD_API_CALL int GLAD_GL_VERSION_2_0;
+#define GL_VERSION_2_1 1
+GLAD_API_CALL int GLAD_GL_VERSION_2_1;
+#define GL_VERSION_3_0 1
+GLAD_API_CALL int GLAD_GL_VERSION_3_0;
+#define GL_VERSION_3_1 1
+GLAD_API_CALL int GLAD_GL_VERSION_3_1;
+#define GL_VERSION_3_2 1
+GLAD_API_CALL int GLAD_GL_VERSION_3_2;
+#define GL_VERSION_3_3 1
+GLAD_API_CALL int GLAD_GL_VERSION_3_3;
+
+
+typedef void (GLAD_API_PTR *PFNGLACTIVETEXTUREPROC)(GLenum texture);
+typedef void (GLAD_API_PTR *PFNGLATTACHSHADERPROC)(GLuint program, GLuint shader);
+typedef void (GLAD_API_PTR *PFNGLBEGINCONDITIONALRENDERPROC)(GLuint id, GLenum mode);
+typedef void (GLAD_API_PTR *PFNGLBEGINQUERYPROC)(GLenum target, GLuint id);
+typedef void (GLAD_API_PTR *PFNGLBEGINTRANSFORMFEEDBACKPROC)(GLenum primitiveMode);
+typedef void (GLAD_API_PTR *PFNGLBINDATTRIBLOCATIONPROC)(GLuint program, GLuint index, const GLchar * name);
+typedef void (GLAD_API_PTR *PFNGLBINDBUFFERPROC)(GLenum target, GLuint buffer);
+typedef void (GLAD_API_PTR *PFNGLBINDBUFFERBASEPROC)(GLenum target, GLuint index, GLuint buffer);
+typedef void (GLAD_API_PTR *PFNGLBINDBUFFERRANGEPROC)(GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size);
+typedef void (GLAD_API_PTR *PFNGLBINDFRAGDATALOCATIONPROC)(GLuint program, GLuint color, const GLchar * name);
+typedef void (GLAD_API_PTR *PFNGLBINDFRAGDATALOCATIONINDEXEDPROC)(GLuint program, GLuint colorNumber, GLuint index, const GLchar * name);
+typedef void (GLAD_API_PTR *PFNGLBINDFRAMEBUFFERPROC)(GLenum target, GLuint framebuffer);
+typedef void (GLAD_API_PTR *PFNGLBINDRENDERBUFFERPROC)(GLenum target, GLuint renderbuffer);
+typedef void (GLAD_API_PTR *PFNGLBINDSAMPLERPROC)(GLuint unit, GLuint sampler);
+typedef void (GLAD_API_PTR *PFNGLBINDTEXTUREPROC)(GLenum target, GLuint texture);
+typedef void (GLAD_API_PTR *PFNGLBINDVERTEXARRAYPROC)(GLuint array);
+typedef void (GLAD_API_PTR *PFNGLBLENDCOLORPROC)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+typedef void (GLAD_API_PTR *PFNGLBLENDEQUATIONPROC)(GLenum mode);
+typedef void (GLAD_API_PTR *PFNGLBLENDEQUATIONSEPARATEPROC)(GLenum modeRGB, GLenum modeAlpha);
+typedef void (GLAD_API_PTR *PFNGLBLENDFUNCPROC)(GLenum sfactor, GLenum dfactor);
+typedef void (GLAD_API_PTR *PFNGLBLENDFUNCSEPARATEPROC)(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
+typedef void (GLAD_API_PTR *PFNGLBLITFRAMEBUFFERPROC)(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
+typedef void (GLAD_API_PTR *PFNGLBUFFERDATAPROC)(GLenum target, GLsizeiptr size, const void * data, GLenum usage);
+typedef void (GLAD_API_PTR *PFNGLBUFFERSUBDATAPROC)(GLenum target, GLintptr offset, GLsizeiptr size, const void * data);
+typedef GLenum (GLAD_API_PTR *PFNGLCHECKFRAMEBUFFERSTATUSPROC)(GLenum target);
+typedef void (GLAD_API_PTR *PFNGLCLAMPCOLORPROC)(GLenum target, GLenum clamp);
+typedef void (GLAD_API_PTR *PFNGLCLEARPROC)(GLbitfield mask);
+typedef void (GLAD_API_PTR *PFNGLCLEARBUFFERFIPROC)(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
+typedef void (GLAD_API_PTR *PFNGLCLEARBUFFERFVPROC)(GLenum buffer, GLint drawbuffer, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLCLEARBUFFERIVPROC)(GLenum buffer, GLint drawbuffer, const GLint * value);
+typedef void (GLAD_API_PTR *PFNGLCLEARBUFFERUIVPROC)(GLenum buffer, GLint drawbuffer, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLCLEARCOLORPROC)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+typedef void (GLAD_API_PTR *PFNGLCLEARDEPTHPROC)(GLdouble depth);
+typedef void (GLAD_API_PTR *PFNGLCLEARSTENCILPROC)(GLint s);
+typedef GLenum (GLAD_API_PTR *PFNGLCLIENTWAITSYNCPROC)(GLsync sync, GLbitfield flags, GLuint64 timeout);
+typedef void (GLAD_API_PTR *PFNGLCOLORMASKPROC)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
+typedef void (GLAD_API_PTR *PFNGLCOLORMASKIPROC)(GLuint index, GLboolean r, GLboolean g, GLboolean b, GLboolean a);
+typedef void (GLAD_API_PTR *PFNGLCOMPILESHADERPROC)(GLuint shader);
+typedef void (GLAD_API_PTR *PFNGLCOMPRESSEDTEXIMAGE1DPROC)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLsizei imageSize, const void * data);
+typedef void (GLAD_API_PTR *PFNGLCOMPRESSEDTEXIMAGE2DPROC)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void * data);
+typedef void (GLAD_API_PTR *PFNGLCOMPRESSEDTEXIMAGE3DPROC)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void * data);
+typedef void (GLAD_API_PTR *PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const void * data);
+typedef void (GLAD_API_PTR *PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void * data);
+typedef void (GLAD_API_PTR *PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void * data);
+typedef void (GLAD_API_PTR *PFNGLCOPYBUFFERSUBDATAPROC)(GLenum readTarget, GLenum writeTarget, GLintptr readOffset, GLintptr writeOffset, GLsizeiptr size);
+typedef void (GLAD_API_PTR *PFNGLCOPYTEXIMAGE1DPROC)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
+typedef void (GLAD_API_PTR *PFNGLCOPYTEXIMAGE2DPROC)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
+typedef void (GLAD_API_PTR *PFNGLCOPYTEXSUBIMAGE1DPROC)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
+typedef void (GLAD_API_PTR *PFNGLCOPYTEXSUBIMAGE2DPROC)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+typedef void (GLAD_API_PTR *PFNGLCOPYTEXSUBIMAGE3DPROC)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+typedef GLuint (GLAD_API_PTR *PFNGLCREATEPROGRAMPROC)(void);
+typedef GLuint (GLAD_API_PTR *PFNGLCREATESHADERPROC)(GLenum type);
+typedef void (GLAD_API_PTR *PFNGLCULLFACEPROC)(GLenum mode);
+typedef void (GLAD_API_PTR *PFNGLDELETEBUFFERSPROC)(GLsizei n, const GLuint * buffers);
+typedef void (GLAD_API_PTR *PFNGLDELETEFRAMEBUFFERSPROC)(GLsizei n, const GLuint * framebuffers);
+typedef void (GLAD_API_PTR *PFNGLDELETEPROGRAMPROC)(GLuint program);
+typedef void (GLAD_API_PTR *PFNGLDELETEQUERIESPROC)(GLsizei n, const GLuint * ids);
+typedef void (GLAD_API_PTR *PFNGLDELETERENDERBUFFERSPROC)(GLsizei n, const GLuint * renderbuffers);
+typedef void (GLAD_API_PTR *PFNGLDELETESAMPLERSPROC)(GLsizei count, const GLuint * samplers);
+typedef void (GLAD_API_PTR *PFNGLDELETESHADERPROC)(GLuint shader);
+typedef void (GLAD_API_PTR *PFNGLDELETESYNCPROC)(GLsync sync);
+typedef void (GLAD_API_PTR *PFNGLDELETETEXTURESPROC)(GLsizei n, const GLuint * textures);
+typedef void (GLAD_API_PTR *PFNGLDELETEVERTEXARRAYSPROC)(GLsizei n, const GLuint * arrays);
+typedef void (GLAD_API_PTR *PFNGLDEPTHFUNCPROC)(GLenum func);
+typedef void (GLAD_API_PTR *PFNGLDEPTHMASKPROC)(GLboolean flag);
+typedef void (GLAD_API_PTR *PFNGLDEPTHRANGEPROC)(GLdouble n, GLdouble f);
+typedef void (GLAD_API_PTR *PFNGLDETACHSHADERPROC)(GLuint program, GLuint shader);
+typedef void (GLAD_API_PTR *PFNGLDISABLEPROC)(GLenum cap);
+typedef void (GLAD_API_PTR *PFNGLDISABLEVERTEXATTRIBARRAYPROC)(GLuint index);
+typedef void (GLAD_API_PTR *PFNGLDISABLEIPROC)(GLenum target, GLuint index);
+typedef void (GLAD_API_PTR *PFNGLDRAWARRAYSPROC)(GLenum mode, GLint first, GLsizei count);
+typedef void (GLAD_API_PTR *PFNGLDRAWARRAYSINSTANCEDPROC)(GLenum mode, GLint first, GLsizei count, GLsizei instancecount);
+typedef void (GLAD_API_PTR *PFNGLDRAWBUFFERPROC)(GLenum buf);
+typedef void (GLAD_API_PTR *PFNGLDRAWBUFFERSPROC)(GLsizei n, const GLenum * bufs);
+typedef void (GLAD_API_PTR *PFNGLDRAWELEMENTSPROC)(GLenum mode, GLsizei count, GLenum type, const void * indices);
+typedef void (GLAD_API_PTR *PFNGLDRAWELEMENTSBASEVERTEXPROC)(GLenum mode, GLsizei count, GLenum type, const void * indices, GLint basevertex);
+typedef void (GLAD_API_PTR *PFNGLDRAWELEMENTSINSTANCEDPROC)(GLenum mode, GLsizei count, GLenum type, const void * indices, GLsizei instancecount);
+typedef void (GLAD_API_PTR *PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC)(GLenum mode, GLsizei count, GLenum type, const void * indices, GLsizei instancecount, GLint basevertex);
+typedef void (GLAD_API_PTR *PFNGLDRAWRANGEELEMENTSPROC)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void * indices);
+typedef void (GLAD_API_PTR *PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void * indices, GLint basevertex);
+typedef void (GLAD_API_PTR *PFNGLENABLEPROC)(GLenum cap);
+typedef void (GLAD_API_PTR *PFNGLENABLEVERTEXATTRIBARRAYPROC)(GLuint index);
+typedef void (GLAD_API_PTR *PFNGLENABLEIPROC)(GLenum target, GLuint index);
+typedef void (GLAD_API_PTR *PFNGLENDCONDITIONALRENDERPROC)(void);
+typedef void (GLAD_API_PTR *PFNGLENDQUERYPROC)(GLenum target);
+typedef void (GLAD_API_PTR *PFNGLENDTRANSFORMFEEDBACKPROC)(void);
+typedef GLsync (GLAD_API_PTR *PFNGLFENCESYNCPROC)(GLenum condition, GLbitfield flags);
+typedef void (GLAD_API_PTR *PFNGLFINISHPROC)(void);
+typedef void (GLAD_API_PTR *PFNGLFLUSHPROC)(void);
+typedef void (GLAD_API_PTR *PFNGLFLUSHMAPPEDBUFFERRANGEPROC)(GLenum target, GLintptr offset, GLsizeiptr length);
+typedef void (GLAD_API_PTR *PFNGLFRAMEBUFFERRENDERBUFFERPROC)(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+typedef void (GLAD_API_PTR *PFNGLFRAMEBUFFERTEXTUREPROC)(GLenum target, GLenum attachment, GLuint texture, GLint level);
+typedef void (GLAD_API_PTR *PFNGLFRAMEBUFFERTEXTURE1DPROC)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+typedef void (GLAD_API_PTR *PFNGLFRAMEBUFFERTEXTURE2DPROC)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+typedef void (GLAD_API_PTR *PFNGLFRAMEBUFFERTEXTURE3DPROC)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
+typedef void (GLAD_API_PTR *PFNGLFRAMEBUFFERTEXTURELAYERPROC)(GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer);
+typedef void (GLAD_API_PTR *PFNGLFRONTFACEPROC)(GLenum mode);
+typedef void (GLAD_API_PTR *PFNGLGENBUFFERSPROC)(GLsizei n, GLuint * buffers);
+typedef void (GLAD_API_PTR *PFNGLGENFRAMEBUFFERSPROC)(GLsizei n, GLuint * framebuffers);
+typedef void (GLAD_API_PTR *PFNGLGENQUERIESPROC)(GLsizei n, GLuint * ids);
+typedef void (GLAD_API_PTR *PFNGLGENRENDERBUFFERSPROC)(GLsizei n, GLuint * renderbuffers);
+typedef void (GLAD_API_PTR *PFNGLGENSAMPLERSPROC)(GLsizei count, GLuint * samplers);
+typedef void (GLAD_API_PTR *PFNGLGENTEXTURESPROC)(GLsizei n, GLuint * textures);
+typedef void (GLAD_API_PTR *PFNGLGENVERTEXARRAYSPROC)(GLsizei n, GLuint * arrays);
+typedef void (GLAD_API_PTR *PFNGLGENERATEMIPMAPPROC)(GLenum target);
+typedef void (GLAD_API_PTR *PFNGLGETACTIVEATTRIBPROC)(GLuint program, GLuint index, GLsizei bufSize, GLsizei * length, GLint * size, GLenum * type, GLchar * name);
+typedef void (GLAD_API_PTR *PFNGLGETACTIVEUNIFORMPROC)(GLuint program, GLuint index, GLsizei bufSize, GLsizei * length, GLint * size, GLenum * type, GLchar * name);
+typedef void (GLAD_API_PTR *PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC)(GLuint program, GLuint uniformBlockIndex, GLsizei bufSize, GLsizei * length, GLchar * uniformBlockName);
+typedef void (GLAD_API_PTR *PFNGLGETACTIVEUNIFORMBLOCKIVPROC)(GLuint program, GLuint uniformBlockIndex, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETACTIVEUNIFORMNAMEPROC)(GLuint program, GLuint uniformIndex, GLsizei bufSize, GLsizei * length, GLchar * uniformName);
+typedef void (GLAD_API_PTR *PFNGLGETACTIVEUNIFORMSIVPROC)(GLuint program, GLsizei uniformCount, const GLuint * uniformIndices, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETATTACHEDSHADERSPROC)(GLuint program, GLsizei maxCount, GLsizei * count, GLuint * shaders);
+typedef GLint (GLAD_API_PTR *PFNGLGETATTRIBLOCATIONPROC)(GLuint program, const GLchar * name);
+typedef void (GLAD_API_PTR *PFNGLGETBOOLEANI_VPROC)(GLenum target, GLuint index, GLboolean * data);
+typedef void (GLAD_API_PTR *PFNGLGETBOOLEANVPROC)(GLenum pname, GLboolean * data);
+typedef void (GLAD_API_PTR *PFNGLGETBUFFERPARAMETERI64VPROC)(GLenum target, GLenum pname, GLint64 * params);
+typedef void (GLAD_API_PTR *PFNGLGETBUFFERPARAMETERIVPROC)(GLenum target, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETBUFFERPOINTERVPROC)(GLenum target, GLenum pname, void ** params);
+typedef void (GLAD_API_PTR *PFNGLGETBUFFERSUBDATAPROC)(GLenum target, GLintptr offset, GLsizeiptr size, void * data);
+typedef void (GLAD_API_PTR *PFNGLGETCOMPRESSEDTEXIMAGEPROC)(GLenum target, GLint level, void * img);
+typedef void (GLAD_API_PTR *PFNGLGETDOUBLEVPROC)(GLenum pname, GLdouble * data);
+typedef GLenum (GLAD_API_PTR *PFNGLGETERRORPROC)(void);
+typedef void (GLAD_API_PTR *PFNGLGETFLOATVPROC)(GLenum pname, GLfloat * data);
+typedef GLint (GLAD_API_PTR *PFNGLGETFRAGDATAINDEXPROC)(GLuint program, const GLchar * name);
+typedef GLint (GLAD_API_PTR *PFNGLGETFRAGDATALOCATIONPROC)(GLuint program, const GLchar * name);
+typedef void (GLAD_API_PTR *PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC)(GLenum target, GLenum attachment, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETINTEGER64I_VPROC)(GLenum target, GLuint index, GLint64 * data);
+typedef void (GLAD_API_PTR *PFNGLGETINTEGER64VPROC)(GLenum pname, GLint64 * data);
+typedef void (GLAD_API_PTR *PFNGLGETINTEGERI_VPROC)(GLenum target, GLuint index, GLint * data);
+typedef void (GLAD_API_PTR *PFNGLGETINTEGERVPROC)(GLenum pname, GLint * data);
+typedef void (GLAD_API_PTR *PFNGLGETMULTISAMPLEFVPROC)(GLenum pname, GLuint index, GLfloat * val);
+typedef void (GLAD_API_PTR *PFNGLGETPROGRAMINFOLOGPROC)(GLuint program, GLsizei bufSize, GLsizei * length, GLchar * infoLog);
+typedef void (GLAD_API_PTR *PFNGLGETPROGRAMIVPROC)(GLuint program, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETQUERYOBJECTI64VPROC)(GLuint id, GLenum pname, GLint64 * params);
+typedef void (GLAD_API_PTR *PFNGLGETQUERYOBJECTIVPROC)(GLuint id, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETQUERYOBJECTUI64VPROC)(GLuint id, GLenum pname, GLuint64 * params);
+typedef void (GLAD_API_PTR *PFNGLGETQUERYOBJECTUIVPROC)(GLuint id, GLenum pname, GLuint * params);
+typedef void (GLAD_API_PTR *PFNGLGETQUERYIVPROC)(GLenum target, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETRENDERBUFFERPARAMETERIVPROC)(GLenum target, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETSAMPLERPARAMETERIIVPROC)(GLuint sampler, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETSAMPLERPARAMETERIUIVPROC)(GLuint sampler, GLenum pname, GLuint * params);
+typedef void (GLAD_API_PTR *PFNGLGETSAMPLERPARAMETERFVPROC)(GLuint sampler, GLenum pname, GLfloat * params);
+typedef void (GLAD_API_PTR *PFNGLGETSAMPLERPARAMETERIVPROC)(GLuint sampler, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETSHADERINFOLOGPROC)(GLuint shader, GLsizei bufSize, GLsizei * length, GLchar * infoLog);
+typedef void (GLAD_API_PTR *PFNGLGETSHADERSOURCEPROC)(GLuint shader, GLsizei bufSize, GLsizei * length, GLchar * source);
+typedef void (GLAD_API_PTR *PFNGLGETSHADERIVPROC)(GLuint shader, GLenum pname, GLint * params);
+typedef const GLubyte * (GLAD_API_PTR *PFNGLGETSTRINGPROC)(GLenum name);
+typedef const GLubyte * (GLAD_API_PTR *PFNGLGETSTRINGIPROC)(GLenum name, GLuint index);
+typedef void (GLAD_API_PTR *PFNGLGETSYNCIVPROC)(GLsync sync, GLenum pname, GLsizei count, GLsizei * length, GLint * values);
+typedef void (GLAD_API_PTR *PFNGLGETTEXIMAGEPROC)(GLenum target, GLint level, GLenum format, GLenum type, void * pixels);
+typedef void (GLAD_API_PTR *PFNGLGETTEXLEVELPARAMETERFVPROC)(GLenum target, GLint level, GLenum pname, GLfloat * params);
+typedef void (GLAD_API_PTR *PFNGLGETTEXLEVELPARAMETERIVPROC)(GLenum target, GLint level, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETTEXPARAMETERIIVPROC)(GLenum target, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETTEXPARAMETERIUIVPROC)(GLenum target, GLenum pname, GLuint * params);
+typedef void (GLAD_API_PTR *PFNGLGETTEXPARAMETERFVPROC)(GLenum target, GLenum pname, GLfloat * params);
+typedef void (GLAD_API_PTR *PFNGLGETTEXPARAMETERIVPROC)(GLenum target, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETTRANSFORMFEEDBACKVARYINGPROC)(GLuint program, GLuint index, GLsizei bufSize, GLsizei * length, GLsizei * size, GLenum * type, GLchar * name);
+typedef GLuint (GLAD_API_PTR *PFNGLGETUNIFORMBLOCKINDEXPROC)(GLuint program, const GLchar * uniformBlockName);
+typedef void (GLAD_API_PTR *PFNGLGETUNIFORMINDICESPROC)(GLuint program, GLsizei uniformCount, const GLchar *const* uniformNames, GLuint * uniformIndices);
+typedef GLint (GLAD_API_PTR *PFNGLGETUNIFORMLOCATIONPROC)(GLuint program, const GLchar * name);
+typedef void (GLAD_API_PTR *PFNGLGETUNIFORMFVPROC)(GLuint program, GLint location, GLfloat * params);
+typedef void (GLAD_API_PTR *PFNGLGETUNIFORMIVPROC)(GLuint program, GLint location, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETUNIFORMUIVPROC)(GLuint program, GLint location, GLuint * params);
+typedef void (GLAD_API_PTR *PFNGLGETVERTEXATTRIBIIVPROC)(GLuint index, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLGETVERTEXATTRIBIUIVPROC)(GLuint index, GLenum pname, GLuint * params);
+typedef void (GLAD_API_PTR *PFNGLGETVERTEXATTRIBPOINTERVPROC)(GLuint index, GLenum pname, void ** pointer);
+typedef void (GLAD_API_PTR *PFNGLGETVERTEXATTRIBDVPROC)(GLuint index, GLenum pname, GLdouble * params);
+typedef void (GLAD_API_PTR *PFNGLGETVERTEXATTRIBFVPROC)(GLuint index, GLenum pname, GLfloat * params);
+typedef void (GLAD_API_PTR *PFNGLGETVERTEXATTRIBIVPROC)(GLuint index, GLenum pname, GLint * params);
+typedef void (GLAD_API_PTR *PFNGLHINTPROC)(GLenum target, GLenum mode);
+typedef GLboolean (GLAD_API_PTR *PFNGLISBUFFERPROC)(GLuint buffer);
+typedef GLboolean (GLAD_API_PTR *PFNGLISENABLEDPROC)(GLenum cap);
+typedef GLboolean (GLAD_API_PTR *PFNGLISENABLEDIPROC)(GLenum target, GLuint index);
+typedef GLboolean (GLAD_API_PTR *PFNGLISFRAMEBUFFERPROC)(GLuint framebuffer);
+typedef GLboolean (GLAD_API_PTR *PFNGLISPROGRAMPROC)(GLuint program);
+typedef GLboolean (GLAD_API_PTR *PFNGLISQUERYPROC)(GLuint id);
+typedef GLboolean (GLAD_API_PTR *PFNGLISRENDERBUFFERPROC)(GLuint renderbuffer);
+typedef GLboolean (GLAD_API_PTR *PFNGLISSAMPLERPROC)(GLuint sampler);
+typedef GLboolean (GLAD_API_PTR *PFNGLISSHADERPROC)(GLuint shader);
+typedef GLboolean (GLAD_API_PTR *PFNGLISSYNCPROC)(GLsync sync);
+typedef GLboolean (GLAD_API_PTR *PFNGLISTEXTUREPROC)(GLuint texture);
+typedef GLboolean (GLAD_API_PTR *PFNGLISVERTEXARRAYPROC)(GLuint array);
+typedef void (GLAD_API_PTR *PFNGLLINEWIDTHPROC)(GLfloat width);
+typedef void (GLAD_API_PTR *PFNGLLINKPROGRAMPROC)(GLuint program);
+typedef void (GLAD_API_PTR *PFNGLLOGICOPPROC)(GLenum opcode);
+typedef void * (GLAD_API_PTR *PFNGLMAPBUFFERPROC)(GLenum target, GLenum access);
+typedef void * (GLAD_API_PTR *PFNGLMAPBUFFERRANGEPROC)(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
+typedef void (GLAD_API_PTR *PFNGLMULTIDRAWARRAYSPROC)(GLenum mode, const GLint * first, const GLsizei * count, GLsizei drawcount);
+typedef void (GLAD_API_PTR *PFNGLMULTIDRAWELEMENTSPROC)(GLenum mode, const GLsizei * count, GLenum type, const void *const* indices, GLsizei drawcount);
+typedef void (GLAD_API_PTR *PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC)(GLenum mode, const GLsizei * count, GLenum type, const void *const* indices, GLsizei drawcount, const GLint * basevertex);
+typedef void (GLAD_API_PTR *PFNGLPIXELSTOREFPROC)(GLenum pname, GLfloat param);
+typedef void (GLAD_API_PTR *PFNGLPIXELSTOREIPROC)(GLenum pname, GLint param);
+typedef void (GLAD_API_PTR *PFNGLPOINTPARAMETERFPROC)(GLenum pname, GLfloat param);
+typedef void (GLAD_API_PTR *PFNGLPOINTPARAMETERFVPROC)(GLenum pname, const GLfloat * params);
+typedef void (GLAD_API_PTR *PFNGLPOINTPARAMETERIPROC)(GLenum pname, GLint param);
+typedef void (GLAD_API_PTR *PFNGLPOINTPARAMETERIVPROC)(GLenum pname, const GLint * params);
+typedef void (GLAD_API_PTR *PFNGLPOINTSIZEPROC)(GLfloat size);
+typedef void (GLAD_API_PTR *PFNGLPOLYGONMODEPROC)(GLenum face, GLenum mode);
+typedef void (GLAD_API_PTR *PFNGLPOLYGONOFFSETPROC)(GLfloat factor, GLfloat units);
+typedef void (GLAD_API_PTR *PFNGLPRIMITIVERESTARTINDEXPROC)(GLuint index);
+typedef void (GLAD_API_PTR *PFNGLPROVOKINGVERTEXPROC)(GLenum mode);
+typedef void (GLAD_API_PTR *PFNGLQUERYCOUNTERPROC)(GLuint id, GLenum target);
+typedef void (GLAD_API_PTR *PFNGLREADBUFFERPROC)(GLenum src);
+typedef void (GLAD_API_PTR *PFNGLREADPIXELSPROC)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void * pixels);
+typedef void (GLAD_API_PTR *PFNGLRENDERBUFFERSTORAGEPROC)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (GLAD_API_PTR *PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC)(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (GLAD_API_PTR *PFNGLSAMPLECOVERAGEPROC)(GLfloat value, GLboolean invert);
+typedef void (GLAD_API_PTR *PFNGLSAMPLEMASKIPROC)(GLuint maskNumber, GLbitfield mask);
+typedef void (GLAD_API_PTR *PFNGLSAMPLERPARAMETERIIVPROC)(GLuint sampler, GLenum pname, const GLint * param);
+typedef void (GLAD_API_PTR *PFNGLSAMPLERPARAMETERIUIVPROC)(GLuint sampler, GLenum pname, const GLuint * param);
+typedef void (GLAD_API_PTR *PFNGLSAMPLERPARAMETERFPROC)(GLuint sampler, GLenum pname, GLfloat param);
+typedef void (GLAD_API_PTR *PFNGLSAMPLERPARAMETERFVPROC)(GLuint sampler, GLenum pname, const GLfloat * param);
+typedef void (GLAD_API_PTR *PFNGLSAMPLERPARAMETERIPROC)(GLuint sampler, GLenum pname, GLint param);
+typedef void (GLAD_API_PTR *PFNGLSAMPLERPARAMETERIVPROC)(GLuint sampler, GLenum pname, const GLint * param);
+typedef void (GLAD_API_PTR *PFNGLSCISSORPROC)(GLint x, GLint y, GLsizei width, GLsizei height);
+typedef void (GLAD_API_PTR *PFNGLSHADERSOURCEPROC)(GLuint shader, GLsizei count, const GLchar *const* string, const GLint * length);
+typedef void (GLAD_API_PTR *PFNGLSTENCILFUNCPROC)(GLenum func, GLint ref, GLuint mask);
+typedef void (GLAD_API_PTR *PFNGLSTENCILFUNCSEPARATEPROC)(GLenum face, GLenum func, GLint ref, GLuint mask);
+typedef void (GLAD_API_PTR *PFNGLSTENCILMASKPROC)(GLuint mask);
+typedef void (GLAD_API_PTR *PFNGLSTENCILMASKSEPARATEPROC)(GLenum face, GLuint mask);
+typedef void (GLAD_API_PTR *PFNGLSTENCILOPPROC)(GLenum fail, GLenum zfail, GLenum zpass);
+typedef void (GLAD_API_PTR *PFNGLSTENCILOPSEPARATEPROC)(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
+typedef void (GLAD_API_PTR *PFNGLTEXBUFFERPROC)(GLenum target, GLenum internalformat, GLuint buffer);
+typedef void (GLAD_API_PTR *PFNGLTEXIMAGE1DPROC)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLint border, GLenum format, GLenum type, const void * pixels);
+typedef void (GLAD_API_PTR *PFNGLTEXIMAGE2DPROC)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void * pixels);
+typedef void (GLAD_API_PTR *PFNGLTEXIMAGE2DMULTISAMPLEPROC)(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations);
+typedef void (GLAD_API_PTR *PFNGLTEXIMAGE3DPROC)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const void * pixels);
+typedef void (GLAD_API_PTR *PFNGLTEXIMAGE3DMULTISAMPLEPROC)(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLboolean fixedsamplelocations);
+typedef void (GLAD_API_PTR *PFNGLTEXPARAMETERIIVPROC)(GLenum target, GLenum pname, const GLint * params);
+typedef void (GLAD_API_PTR *PFNGLTEXPARAMETERIUIVPROC)(GLenum target, GLenum pname, const GLuint * params);
+typedef void (GLAD_API_PTR *PFNGLTEXPARAMETERFPROC)(GLenum target, GLenum pname, GLfloat param);
+typedef void (GLAD_API_PTR *PFNGLTEXPARAMETERFVPROC)(GLenum target, GLenum pname, const GLfloat * params);
+typedef void (GLAD_API_PTR *PFNGLTEXPARAMETERIPROC)(GLenum target, GLenum pname, GLint param);
+typedef void (GLAD_API_PTR *PFNGLTEXPARAMETERIVPROC)(GLenum target, GLenum pname, const GLint * params);
+typedef void (GLAD_API_PTR *PFNGLTEXSUBIMAGE1DPROC)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const void * pixels);
+typedef void (GLAD_API_PTR *PFNGLTEXSUBIMAGE2DPROC)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void * pixels);
+typedef void (GLAD_API_PTR *PFNGLTEXSUBIMAGE3DPROC)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void * pixels);
+typedef void (GLAD_API_PTR *PFNGLTRANSFORMFEEDBACKVARYINGSPROC)(GLuint program, GLsizei count, const GLchar *const* varyings, GLenum bufferMode);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM1FPROC)(GLint location, GLfloat v0);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM1FVPROC)(GLint location, GLsizei count, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM1IPROC)(GLint location, GLint v0);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM1IVPROC)(GLint location, GLsizei count, const GLint * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM1UIPROC)(GLint location, GLuint v0);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM1UIVPROC)(GLint location, GLsizei count, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM2FPROC)(GLint location, GLfloat v0, GLfloat v1);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM2FVPROC)(GLint location, GLsizei count, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM2IPROC)(GLint location, GLint v0, GLint v1);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM2IVPROC)(GLint location, GLsizei count, const GLint * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM2UIPROC)(GLint location, GLuint v0, GLuint v1);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM2UIVPROC)(GLint location, GLsizei count, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM3FPROC)(GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM3FVPROC)(GLint location, GLsizei count, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM3IPROC)(GLint location, GLint v0, GLint v1, GLint v2);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM3IVPROC)(GLint location, GLsizei count, const GLint * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM3UIPROC)(GLint location, GLuint v0, GLuint v1, GLuint v2);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM3UIVPROC)(GLint location, GLsizei count, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM4FPROC)(GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM4FVPROC)(GLint location, GLsizei count, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM4IPROC)(GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM4IVPROC)(GLint location, GLsizei count, const GLint * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM4UIPROC)(GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3);
+typedef void (GLAD_API_PTR *PFNGLUNIFORM4UIVPROC)(GLint location, GLsizei count, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMBLOCKBINDINGPROC)(GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX2FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX2X3FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX2X4FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX3FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX3X2FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX3X4FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX4FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX4X2FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef void (GLAD_API_PTR *PFNGLUNIFORMMATRIX4X3FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+typedef GLboolean (GLAD_API_PTR *PFNGLUNMAPBUFFERPROC)(GLenum target);
+typedef void (GLAD_API_PTR *PFNGLUSEPROGRAMPROC)(GLuint program);
+typedef void (GLAD_API_PTR *PFNGLVALIDATEPROGRAMPROC)(GLuint program);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB1DPROC)(GLuint index, GLdouble x);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB1DVPROC)(GLuint index, const GLdouble * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB1FPROC)(GLuint index, GLfloat x);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB1FVPROC)(GLuint index, const GLfloat * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB1SPROC)(GLuint index, GLshort x);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB1SVPROC)(GLuint index, const GLshort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB2DPROC)(GLuint index, GLdouble x, GLdouble y);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB2DVPROC)(GLuint index, const GLdouble * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB2FPROC)(GLuint index, GLfloat x, GLfloat y);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB2FVPROC)(GLuint index, const GLfloat * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB2SPROC)(GLuint index, GLshort x, GLshort y);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB2SVPROC)(GLuint index, const GLshort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB3DPROC)(GLuint index, GLdouble x, GLdouble y, GLdouble z);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB3DVPROC)(GLuint index, const GLdouble * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB3FPROC)(GLuint index, GLfloat x, GLfloat y, GLfloat z);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB3FVPROC)(GLuint index, const GLfloat * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB3SPROC)(GLuint index, GLshort x, GLshort y, GLshort z);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB3SVPROC)(GLuint index, const GLshort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4NBVPROC)(GLuint index, const GLbyte * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4NIVPROC)(GLuint index, const GLint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4NSVPROC)(GLuint index, const GLshort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4NUBPROC)(GLuint index, GLubyte x, GLubyte y, GLubyte z, GLubyte w);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4NUBVPROC)(GLuint index, const GLubyte * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4NUIVPROC)(GLuint index, const GLuint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4NUSVPROC)(GLuint index, const GLushort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4BVPROC)(GLuint index, const GLbyte * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4DPROC)(GLuint index, GLdouble x, GLdouble y, GLdouble z, GLdouble w);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4DVPROC)(GLuint index, const GLdouble * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4FPROC)(GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4FVPROC)(GLuint index, const GLfloat * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4IVPROC)(GLuint index, const GLint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4SPROC)(GLuint index, GLshort x, GLshort y, GLshort z, GLshort w);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4SVPROC)(GLuint index, const GLshort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4UBVPROC)(GLuint index, const GLubyte * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4UIVPROC)(GLuint index, const GLuint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIB4USVPROC)(GLuint index, const GLushort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBDIVISORPROC)(GLuint index, GLuint divisor);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI1IPROC)(GLuint index, GLint x);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI1IVPROC)(GLuint index, const GLint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI1UIPROC)(GLuint index, GLuint x);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI1UIVPROC)(GLuint index, const GLuint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI2IPROC)(GLuint index, GLint x, GLint y);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI2IVPROC)(GLuint index, const GLint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI2UIPROC)(GLuint index, GLuint x, GLuint y);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI2UIVPROC)(GLuint index, const GLuint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI3IPROC)(GLuint index, GLint x, GLint y, GLint z);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI3IVPROC)(GLuint index, const GLint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI3UIPROC)(GLuint index, GLuint x, GLuint y, GLuint z);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI3UIVPROC)(GLuint index, const GLuint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI4BVPROC)(GLuint index, const GLbyte * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI4IPROC)(GLuint index, GLint x, GLint y, GLint z, GLint w);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI4IVPROC)(GLuint index, const GLint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI4SVPROC)(GLuint index, const GLshort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI4UBVPROC)(GLuint index, const GLubyte * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI4UIPROC)(GLuint index, GLuint x, GLuint y, GLuint z, GLuint w);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI4UIVPROC)(GLuint index, const GLuint * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBI4USVPROC)(GLuint index, const GLushort * v);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBIPOINTERPROC)(GLuint index, GLint size, GLenum type, GLsizei stride, const void * pointer);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBP1UIPROC)(GLuint index, GLenum type, GLboolean normalized, GLuint value);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBP1UIVPROC)(GLuint index, GLenum type, GLboolean normalized, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBP2UIPROC)(GLuint index, GLenum type, GLboolean normalized, GLuint value);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBP2UIVPROC)(GLuint index, GLenum type, GLboolean normalized, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBP3UIPROC)(GLuint index, GLenum type, GLboolean normalized, GLuint value);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBP3UIVPROC)(GLuint index, GLenum type, GLboolean normalized, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBP4UIPROC)(GLuint index, GLenum type, GLboolean normalized, GLuint value);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBP4UIVPROC)(GLuint index, GLenum type, GLboolean normalized, const GLuint * value);
+typedef void (GLAD_API_PTR *PFNGLVERTEXATTRIBPOINTERPROC)(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void * pointer);
+typedef void (GLAD_API_PTR *PFNGLVIEWPORTPROC)(GLint x, GLint y, GLsizei width, GLsizei height);
+typedef void (GLAD_API_PTR *PFNGLWAITSYNCPROC)(GLsync sync, GLbitfield flags, GLuint64 timeout);
+
+GLAD_API_CALL PFNGLACTIVETEXTUREPROC glad_glActiveTexture;
+#define glActiveTexture glad_glActiveTexture
+GLAD_API_CALL PFNGLATTACHSHADERPROC glad_glAttachShader;
+#define glAttachShader glad_glAttachShader
+GLAD_API_CALL PFNGLBEGINCONDITIONALRENDERPROC glad_glBeginConditionalRender;
+#define glBeginConditionalRender glad_glBeginConditionalRender
+GLAD_API_CALL PFNGLBEGINQUERYPROC glad_glBeginQuery;
+#define glBeginQuery glad_glBeginQuery
+GLAD_API_CALL PFNGLBEGINTRANSFORMFEEDBACKPROC glad_glBeginTransformFeedback;
+#define glBeginTransformFeedback glad_glBeginTransformFeedback
+GLAD_API_CALL PFNGLBINDATTRIBLOCATIONPROC glad_glBindAttribLocation;
+#define glBindAttribLocation glad_glBindAttribLocation
+GLAD_API_CALL PFNGLBINDBUFFERPROC glad_glBindBuffer;
+#define glBindBuffer glad_glBindBuffer
+GLAD_API_CALL PFNGLBINDBUFFERBASEPROC glad_glBindBufferBase;
+#define glBindBufferBase glad_glBindBufferBase
+GLAD_API_CALL PFNGLBINDBUFFERRANGEPROC glad_glBindBufferRange;
+#define glBindBufferRange glad_glBindBufferRange
+GLAD_API_CALL PFNGLBINDFRAGDATALOCATIONPROC glad_glBindFragDataLocation;
+#define glBindFragDataLocation glad_glBindFragDataLocation
+GLAD_API_CALL PFNGLBINDFRAGDATALOCATIONINDEXEDPROC glad_glBindFragDataLocationIndexed;
+#define glBindFragDataLocationIndexed glad_glBindFragDataLocationIndexed
+GLAD_API_CALL PFNGLBINDFRAMEBUFFERPROC glad_glBindFramebuffer;
+#define glBindFramebuffer glad_glBindFramebuffer
+GLAD_API_CALL PFNGLBINDRENDERBUFFERPROC glad_glBindRenderbuffer;
+#define glBindRenderbuffer glad_glBindRenderbuffer
+GLAD_API_CALL PFNGLBINDSAMPLERPROC glad_glBindSampler;
+#define glBindSampler glad_glBindSampler
+GLAD_API_CALL PFNGLBINDTEXTUREPROC glad_glBindTexture;
+#define glBindTexture glad_glBindTexture
+GLAD_API_CALL PFNGLBINDVERTEXARRAYPROC glad_glBindVertexArray;
+#define glBindVertexArray glad_glBindVertexArray
+GLAD_API_CALL PFNGLBLENDCOLORPROC glad_glBlendColor;
+#define glBlendColor glad_glBlendColor
+GLAD_API_CALL PFNGLBLENDEQUATIONPROC glad_glBlendEquation;
+#define glBlendEquation glad_glBlendEquation
+GLAD_API_CALL PFNGLBLENDEQUATIONSEPARATEPROC glad_glBlendEquationSeparate;
+#define glBlendEquationSeparate glad_glBlendEquationSeparate
+GLAD_API_CALL PFNGLBLENDFUNCPROC glad_glBlendFunc;
+#define glBlendFunc glad_glBlendFunc
+GLAD_API_CALL PFNGLBLENDFUNCSEPARATEPROC glad_glBlendFuncSeparate;
+#define glBlendFuncSeparate glad_glBlendFuncSeparate
+GLAD_API_CALL PFNGLBLITFRAMEBUFFERPROC glad_glBlitFramebuffer;
+#define glBlitFramebuffer glad_glBlitFramebuffer
+GLAD_API_CALL PFNGLBUFFERDATAPROC glad_glBufferData;
+#define glBufferData glad_glBufferData
+GLAD_API_CALL PFNGLBUFFERSUBDATAPROC glad_glBufferSubData;
+#define glBufferSubData glad_glBufferSubData
+GLAD_API_CALL PFNGLCHECKFRAMEBUFFERSTATUSPROC glad_glCheckFramebufferStatus;
+#define glCheckFramebufferStatus glad_glCheckFramebufferStatus
+GLAD_API_CALL PFNGLCLAMPCOLORPROC glad_glClampColor;
+#define glClampColor glad_glClampColor
+GLAD_API_CALL PFNGLCLEARPROC glad_glClear;
+#define glClear glad_glClear
+GLAD_API_CALL PFNGLCLEARBUFFERFIPROC glad_glClearBufferfi;
+#define glClearBufferfi glad_glClearBufferfi
+GLAD_API_CALL PFNGLCLEARBUFFERFVPROC glad_glClearBufferfv;
+#define glClearBufferfv glad_glClearBufferfv
+GLAD_API_CALL PFNGLCLEARBUFFERIVPROC glad_glClearBufferiv;
+#define glClearBufferiv glad_glClearBufferiv
+GLAD_API_CALL PFNGLCLEARBUFFERUIVPROC glad_glClearBufferuiv;
+#define glClearBufferuiv glad_glClearBufferuiv
+GLAD_API_CALL PFNGLCLEARCOLORPROC glad_glClearColor;
+#define glClearColor glad_glClearColor
+GLAD_API_CALL PFNGLCLEARDEPTHPROC glad_glClearDepth;
+#define glClearDepth glad_glClearDepth
+GLAD_API_CALL PFNGLCLEARSTENCILPROC glad_glClearStencil;
+#define glClearStencil glad_glClearStencil
+GLAD_API_CALL PFNGLCLIENTWAITSYNCPROC glad_glClientWaitSync;
+#define glClientWaitSync glad_glClientWaitSync
+GLAD_API_CALL PFNGLCOLORMASKPROC glad_glColorMask;
+#define glColorMask glad_glColorMask
+GLAD_API_CALL PFNGLCOLORMASKIPROC glad_glColorMaski;
+#define glColorMaski glad_glColorMaski
+GLAD_API_CALL PFNGLCOMPILESHADERPROC glad_glCompileShader;
+#define glCompileShader glad_glCompileShader
+GLAD_API_CALL PFNGLCOMPRESSEDTEXIMAGE1DPROC glad_glCompressedTexImage1D;
+#define glCompressedTexImage1D glad_glCompressedTexImage1D
+GLAD_API_CALL PFNGLCOMPRESSEDTEXIMAGE2DPROC glad_glCompressedTexImage2D;
+#define glCompressedTexImage2D glad_glCompressedTexImage2D
+GLAD_API_CALL PFNGLCOMPRESSEDTEXIMAGE3DPROC glad_glCompressedTexImage3D;
+#define glCompressedTexImage3D glad_glCompressedTexImage3D
+GLAD_API_CALL PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC glad_glCompressedTexSubImage1D;
+#define glCompressedTexSubImage1D glad_glCompressedTexSubImage1D
+GLAD_API_CALL PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC glad_glCompressedTexSubImage2D;
+#define glCompressedTexSubImage2D glad_glCompressedTexSubImage2D
+GLAD_API_CALL PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC glad_glCompressedTexSubImage3D;
+#define glCompressedTexSubImage3D glad_glCompressedTexSubImage3D
+GLAD_API_CALL PFNGLCOPYBUFFERSUBDATAPROC glad_glCopyBufferSubData;
+#define glCopyBufferSubData glad_glCopyBufferSubData
+GLAD_API_CALL PFNGLCOPYTEXIMAGE1DPROC glad_glCopyTexImage1D;
+#define glCopyTexImage1D glad_glCopyTexImage1D
+GLAD_API_CALL PFNGLCOPYTEXIMAGE2DPROC glad_glCopyTexImage2D;
+#define glCopyTexImage2D glad_glCopyTexImage2D
+GLAD_API_CALL PFNGLCOPYTEXSUBIMAGE1DPROC glad_glCopyTexSubImage1D;
+#define glCopyTexSubImage1D glad_glCopyTexSubImage1D
+GLAD_API_CALL PFNGLCOPYTEXSUBIMAGE2DPROC glad_glCopyTexSubImage2D;
+#define glCopyTexSubImage2D glad_glCopyTexSubImage2D
+GLAD_API_CALL PFNGLCOPYTEXSUBIMAGE3DPROC glad_glCopyTexSubImage3D;
+#define glCopyTexSubImage3D glad_glCopyTexSubImage3D
+GLAD_API_CALL PFNGLCREATEPROGRAMPROC glad_glCreateProgram;
+#define glCreateProgram glad_glCreateProgram
+GLAD_API_CALL PFNGLCREATESHADERPROC glad_glCreateShader;
+#define glCreateShader glad_glCreateShader
+GLAD_API_CALL PFNGLCULLFACEPROC glad_glCullFace;
+#define glCullFace glad_glCullFace
+GLAD_API_CALL PFNGLDELETEBUFFERSPROC glad_glDeleteBuffers;
+#define glDeleteBuffers glad_glDeleteBuffers
+GLAD_API_CALL PFNGLDELETEFRAMEBUFFERSPROC glad_glDeleteFramebuffers;
+#define glDeleteFramebuffers glad_glDeleteFramebuffers
+GLAD_API_CALL PFNGLDELETEPROGRAMPROC glad_glDeleteProgram;
+#define glDeleteProgram glad_glDeleteProgram
+GLAD_API_CALL PFNGLDELETEQUERIESPROC glad_glDeleteQueries;
+#define glDeleteQueries glad_glDeleteQueries
+GLAD_API_CALL PFNGLDELETERENDERBUFFERSPROC glad_glDeleteRenderbuffers;
+#define glDeleteRenderbuffers glad_glDeleteRenderbuffers
+GLAD_API_CALL PFNGLDELETESAMPLERSPROC glad_glDeleteSamplers;
+#define glDeleteSamplers glad_glDeleteSamplers
+GLAD_API_CALL PFNGLDELETESHADERPROC glad_glDeleteShader;
+#define glDeleteShader glad_glDeleteShader
+GLAD_API_CALL PFNGLDELETESYNCPROC glad_glDeleteSync;
+#define glDeleteSync glad_glDeleteSync
+GLAD_API_CALL PFNGLDELETETEXTURESPROC glad_glDeleteTextures;
+#define glDeleteTextures glad_glDeleteTextures
+GLAD_API_CALL PFNGLDELETEVERTEXARRAYSPROC glad_glDeleteVertexArrays;
+#define glDeleteVertexArrays glad_glDeleteVertexArrays
+GLAD_API_CALL PFNGLDEPTHFUNCPROC glad_glDepthFunc;
+#define glDepthFunc glad_glDepthFunc
+GLAD_API_CALL PFNGLDEPTHMASKPROC glad_glDepthMask;
+#define glDepthMask glad_glDepthMask
+GLAD_API_CALL PFNGLDEPTHRANGEPROC glad_glDepthRange;
+#define glDepthRange glad_glDepthRange
+GLAD_API_CALL PFNGLDETACHSHADERPROC glad_glDetachShader;
+#define glDetachShader glad_glDetachShader
+GLAD_API_CALL PFNGLDISABLEPROC glad_glDisable;
+#define glDisable glad_glDisable
+GLAD_API_CALL PFNGLDISABLEVERTEXATTRIBARRAYPROC glad_glDisableVertexAttribArray;
+#define glDisableVertexAttribArray glad_glDisableVertexAttribArray
+GLAD_API_CALL PFNGLDISABLEIPROC glad_glDisablei;
+#define glDisablei glad_glDisablei
+GLAD_API_CALL PFNGLDRAWARRAYSPROC glad_glDrawArrays;
+#define glDrawArrays glad_glDrawArrays
+GLAD_API_CALL PFNGLDRAWARRAYSINSTANCEDPROC glad_glDrawArraysInstanced;
+#define glDrawArraysInstanced glad_glDrawArraysInstanced
+GLAD_API_CALL PFNGLDRAWBUFFERPROC glad_glDrawBuffer;
+#define glDrawBuffer glad_glDrawBuffer
+GLAD_API_CALL PFNGLDRAWBUFFERSPROC glad_glDrawBuffers;
+#define glDrawBuffers glad_glDrawBuffers
+GLAD_API_CALL PFNGLDRAWELEMENTSPROC glad_glDrawElements;
+#define glDrawElements glad_glDrawElements
+GLAD_API_CALL PFNGLDRAWELEMENTSBASEVERTEXPROC glad_glDrawElementsBaseVertex;
+#define glDrawElementsBaseVertex glad_glDrawElementsBaseVertex
+GLAD_API_CALL PFNGLDRAWELEMENTSINSTANCEDPROC glad_glDrawElementsInstanced;
+#define glDrawElementsInstanced glad_glDrawElementsInstanced
+GLAD_API_CALL PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC glad_glDrawElementsInstancedBaseVertex;
+#define glDrawElementsInstancedBaseVertex glad_glDrawElementsInstancedBaseVertex
+GLAD_API_CALL PFNGLDRAWRANGEELEMENTSPROC glad_glDrawRangeElements;
+#define glDrawRangeElements glad_glDrawRangeElements
+GLAD_API_CALL PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC glad_glDrawRangeElementsBaseVertex;
+#define glDrawRangeElementsBaseVertex glad_glDrawRangeElementsBaseVertex
+GLAD_API_CALL PFNGLENABLEPROC glad_glEnable;
+#define glEnable glad_glEnable
+GLAD_API_CALL PFNGLENABLEVERTEXATTRIBARRAYPROC glad_glEnableVertexAttribArray;
+#define glEnableVertexAttribArray glad_glEnableVertexAttribArray
+GLAD_API_CALL PFNGLENABLEIPROC glad_glEnablei;
+#define glEnablei glad_glEnablei
+GLAD_API_CALL PFNGLENDCONDITIONALRENDERPROC glad_glEndConditionalRender;
+#define glEndConditionalRender glad_glEndConditionalRender
+GLAD_API_CALL PFNGLENDQUERYPROC glad_glEndQuery;
+#define glEndQuery glad_glEndQuery
+GLAD_API_CALL PFNGLENDTRANSFORMFEEDBACKPROC glad_glEndTransformFeedback;
+#define glEndTransformFeedback glad_glEndTransformFeedback
+GLAD_API_CALL PFNGLFENCESYNCPROC glad_glFenceSync;
+#define glFenceSync glad_glFenceSync
+GLAD_API_CALL PFNGLFINISHPROC glad_glFinish;
+#define glFinish glad_glFinish
+GLAD_API_CALL PFNGLFLUSHPROC glad_glFlush;
+#define glFlush glad_glFlush
+GLAD_API_CALL PFNGLFLUSHMAPPEDBUFFERRANGEPROC glad_glFlushMappedBufferRange;
+#define glFlushMappedBufferRange glad_glFlushMappedBufferRange
+GLAD_API_CALL PFNGLFRAMEBUFFERRENDERBUFFERPROC glad_glFramebufferRenderbuffer;
+#define glFramebufferRenderbuffer glad_glFramebufferRenderbuffer
+GLAD_API_CALL PFNGLFRAMEBUFFERTEXTUREPROC glad_glFramebufferTexture;
+#define glFramebufferTexture glad_glFramebufferTexture
+GLAD_API_CALL PFNGLFRAMEBUFFERTEXTURE1DPROC glad_glFramebufferTexture1D;
+#define glFramebufferTexture1D glad_glFramebufferTexture1D
+GLAD_API_CALL PFNGLFRAMEBUFFERTEXTURE2DPROC glad_glFramebufferTexture2D;
+#define glFramebufferTexture2D glad_glFramebufferTexture2D
+GLAD_API_CALL PFNGLFRAMEBUFFERTEXTURE3DPROC glad_glFramebufferTexture3D;
+#define glFramebufferTexture3D glad_glFramebufferTexture3D
+GLAD_API_CALL PFNGLFRAMEBUFFERTEXTURELAYERPROC glad_glFramebufferTextureLayer;
+#define glFramebufferTextureLayer glad_glFramebufferTextureLayer
+GLAD_API_CALL PFNGLFRONTFACEPROC glad_glFrontFace;
+#define glFrontFace glad_glFrontFace
+GLAD_API_CALL PFNGLGENBUFFERSPROC glad_glGenBuffers;
+#define glGenBuffers glad_glGenBuffers
+GLAD_API_CALL PFNGLGENFRAMEBUFFERSPROC glad_glGenFramebuffers;
+#define glGenFramebuffers glad_glGenFramebuffers
+GLAD_API_CALL PFNGLGENQUERIESPROC glad_glGenQueries;
+#define glGenQueries glad_glGenQueries
+GLAD_API_CALL PFNGLGENRENDERBUFFERSPROC glad_glGenRenderbuffers;
+#define glGenRenderbuffers glad_glGenRenderbuffers
+GLAD_API_CALL PFNGLGENSAMPLERSPROC glad_glGenSamplers;
+#define glGenSamplers glad_glGenSamplers
+GLAD_API_CALL PFNGLGENTEXTURESPROC glad_glGenTextures;
+#define glGenTextures glad_glGenTextures
+GLAD_API_CALL PFNGLGENVERTEXARRAYSPROC glad_glGenVertexArrays;
+#define glGenVertexArrays glad_glGenVertexArrays
+GLAD_API_CALL PFNGLGENERATEMIPMAPPROC glad_glGenerateMipmap;
+#define glGenerateMipmap glad_glGenerateMipmap
+GLAD_API_CALL PFNGLGETACTIVEATTRIBPROC glad_glGetActiveAttrib;
+#define glGetActiveAttrib glad_glGetActiveAttrib
+GLAD_API_CALL PFNGLGETACTIVEUNIFORMPROC glad_glGetActiveUniform;
+#define glGetActiveUniform glad_glGetActiveUniform
+GLAD_API_CALL PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC glad_glGetActiveUniformBlockName;
+#define glGetActiveUniformBlockName glad_glGetActiveUniformBlockName
+GLAD_API_CALL PFNGLGETACTIVEUNIFORMBLOCKIVPROC glad_glGetActiveUniformBlockiv;
+#define glGetActiveUniformBlockiv glad_glGetActiveUniformBlockiv
+GLAD_API_CALL PFNGLGETACTIVEUNIFORMNAMEPROC glad_glGetActiveUniformName;
+#define glGetActiveUniformName glad_glGetActiveUniformName
+GLAD_API_CALL PFNGLGETACTIVEUNIFORMSIVPROC glad_glGetActiveUniformsiv;
+#define glGetActiveUniformsiv glad_glGetActiveUniformsiv
+GLAD_API_CALL PFNGLGETATTACHEDSHADERSPROC glad_glGetAttachedShaders;
+#define glGetAttachedShaders glad_glGetAttachedShaders
+GLAD_API_CALL PFNGLGETATTRIBLOCATIONPROC glad_glGetAttribLocation;
+#define glGetAttribLocation glad_glGetAttribLocation
+GLAD_API_CALL PFNGLGETBOOLEANI_VPROC glad_glGetBooleani_v;
+#define glGetBooleani_v glad_glGetBooleani_v
+GLAD_API_CALL PFNGLGETBOOLEANVPROC glad_glGetBooleanv;
+#define glGetBooleanv glad_glGetBooleanv
+GLAD_API_CALL PFNGLGETBUFFERPARAMETERI64VPROC glad_glGetBufferParameteri64v;
+#define glGetBufferParameteri64v glad_glGetBufferParameteri64v
+GLAD_API_CALL PFNGLGETBUFFERPARAMETERIVPROC glad_glGetBufferParameteriv;
+#define glGetBufferParameteriv glad_glGetBufferParameteriv
+GLAD_API_CALL PFNGLGETBUFFERPOINTERVPROC glad_glGetBufferPointerv;
+#define glGetBufferPointerv glad_glGetBufferPointerv
+GLAD_API_CALL PFNGLGETBUFFERSUBDATAPROC glad_glGetBufferSubData;
+#define glGetBufferSubData glad_glGetBufferSubData
+GLAD_API_CALL PFNGLGETCOMPRESSEDTEXIMAGEPROC glad_glGetCompressedTexImage;
+#define glGetCompressedTexImage glad_glGetCompressedTexImage
+GLAD_API_CALL PFNGLGETDOUBLEVPROC glad_glGetDoublev;
+#define glGetDoublev glad_glGetDoublev
+GLAD_API_CALL PFNGLGETERRORPROC glad_glGetError;
+#define glGetError glad_glGetError
+GLAD_API_CALL PFNGLGETFLOATVPROC glad_glGetFloatv;
+#define glGetFloatv glad_glGetFloatv
+GLAD_API_CALL PFNGLGETFRAGDATAINDEXPROC glad_glGetFragDataIndex;
+#define glGetFragDataIndex glad_glGetFragDataIndex
+GLAD_API_CALL PFNGLGETFRAGDATALOCATIONPROC glad_glGetFragDataLocation;
+#define glGetFragDataLocation glad_glGetFragDataLocation
+GLAD_API_CALL PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glad_glGetFramebufferAttachmentParameteriv;
+#define glGetFramebufferAttachmentParameteriv glad_glGetFramebufferAttachmentParameteriv
+GLAD_API_CALL PFNGLGETINTEGER64I_VPROC glad_glGetInteger64i_v;
+#define glGetInteger64i_v glad_glGetInteger64i_v
+GLAD_API_CALL PFNGLGETINTEGER64VPROC glad_glGetInteger64v;
+#define glGetInteger64v glad_glGetInteger64v
+GLAD_API_CALL PFNGLGETINTEGERI_VPROC glad_glGetIntegeri_v;
+#define glGetIntegeri_v glad_glGetIntegeri_v
+GLAD_API_CALL PFNGLGETINTEGERVPROC glad_glGetIntegerv;
+#define glGetIntegerv glad_glGetIntegerv
+GLAD_API_CALL PFNGLGETMULTISAMPLEFVPROC glad_glGetMultisamplefv;
+#define glGetMultisamplefv glad_glGetMultisamplefv
+GLAD_API_CALL PFNGLGETPROGRAMINFOLOGPROC glad_glGetProgramInfoLog;
+#define glGetProgramInfoLog glad_glGetProgramInfoLog
+GLAD_API_CALL PFNGLGETPROGRAMIVPROC glad_glGetProgramiv;
+#define glGetProgramiv glad_glGetProgramiv
+GLAD_API_CALL PFNGLGETQUERYOBJECTI64VPROC glad_glGetQueryObjecti64v;
+#define glGetQueryObjecti64v glad_glGetQueryObjecti64v
+GLAD_API_CALL PFNGLGETQUERYOBJECTIVPROC glad_glGetQueryObjectiv;
+#define glGetQueryObjectiv glad_glGetQueryObjectiv
+GLAD_API_CALL PFNGLGETQUERYOBJECTUI64VPROC glad_glGetQueryObjectui64v;
+#define glGetQueryObjectui64v glad_glGetQueryObjectui64v
+GLAD_API_CALL PFNGLGETQUERYOBJECTUIVPROC glad_glGetQueryObjectuiv;
+#define glGetQueryObjectuiv glad_glGetQueryObjectuiv
+GLAD_API_CALL PFNGLGETQUERYIVPROC glad_glGetQueryiv;
+#define glGetQueryiv glad_glGetQueryiv
+GLAD_API_CALL PFNGLGETRENDERBUFFERPARAMETERIVPROC glad_glGetRenderbufferParameteriv;
+#define glGetRenderbufferParameteriv glad_glGetRenderbufferParameteriv
+GLAD_API_CALL PFNGLGETSAMPLERPARAMETERIIVPROC glad_glGetSamplerParameterIiv;
+#define glGetSamplerParameterIiv glad_glGetSamplerParameterIiv
+GLAD_API_CALL PFNGLGETSAMPLERPARAMETERIUIVPROC glad_glGetSamplerParameterIuiv;
+#define glGetSamplerParameterIuiv glad_glGetSamplerParameterIuiv
+GLAD_API_CALL PFNGLGETSAMPLERPARAMETERFVPROC glad_glGetSamplerParameterfv;
+#define glGetSamplerParameterfv glad_glGetSamplerParameterfv
+GLAD_API_CALL PFNGLGETSAMPLERPARAMETERIVPROC glad_glGetSamplerParameteriv;
+#define glGetSamplerParameteriv glad_glGetSamplerParameteriv
+GLAD_API_CALL PFNGLGETSHADERINFOLOGPROC glad_glGetShaderInfoLog;
+#define glGetShaderInfoLog glad_glGetShaderInfoLog
+GLAD_API_CALL PFNGLGETSHADERSOURCEPROC glad_glGetShaderSource;
+#define glGetShaderSource glad_glGetShaderSource
+GLAD_API_CALL PFNGLGETSHADERIVPROC glad_glGetShaderiv;
+#define glGetShaderiv glad_glGetShaderiv
+GLAD_API_CALL PFNGLGETSTRINGPROC glad_glGetString;
+#define glGetString glad_glGetString
+GLAD_API_CALL PFNGLGETSTRINGIPROC glad_glGetStringi;
+#define glGetStringi glad_glGetStringi
+GLAD_API_CALL PFNGLGETSYNCIVPROC glad_glGetSynciv;
+#define glGetSynciv glad_glGetSynciv
+GLAD_API_CALL PFNGLGETTEXIMAGEPROC glad_glGetTexImage;
+#define glGetTexImage glad_glGetTexImage
+GLAD_API_CALL PFNGLGETTEXLEVELPARAMETERFVPROC glad_glGetTexLevelParameterfv;
+#define glGetTexLevelParameterfv glad_glGetTexLevelParameterfv
+GLAD_API_CALL PFNGLGETTEXLEVELPARAMETERIVPROC glad_glGetTexLevelParameteriv;
+#define glGetTexLevelParameteriv glad_glGetTexLevelParameteriv
+GLAD_API_CALL PFNGLGETTEXPARAMETERIIVPROC glad_glGetTexParameterIiv;
+#define glGetTexParameterIiv glad_glGetTexParameterIiv
+GLAD_API_CALL PFNGLGETTEXPARAMETERIUIVPROC glad_glGetTexParameterIuiv;
+#define glGetTexParameterIuiv glad_glGetTexParameterIuiv
+GLAD_API_CALL PFNGLGETTEXPARAMETERFVPROC glad_glGetTexParameterfv;
+#define glGetTexParameterfv glad_glGetTexParameterfv
+GLAD_API_CALL PFNGLGETTEXPARAMETERIVPROC glad_glGetTexParameteriv;
+#define glGetTexParameteriv glad_glGetTexParameteriv
+GLAD_API_CALL PFNGLGETTRANSFORMFEEDBACKVARYINGPROC glad_glGetTransformFeedbackVarying;
+#define glGetTransformFeedbackVarying glad_glGetTransformFeedbackVarying
+GLAD_API_CALL PFNGLGETUNIFORMBLOCKINDEXPROC glad_glGetUniformBlockIndex;
+#define glGetUniformBlockIndex glad_glGetUniformBlockIndex
+GLAD_API_CALL PFNGLGETUNIFORMINDICESPROC glad_glGetUniformIndices;
+#define glGetUniformIndices glad_glGetUniformIndices
+GLAD_API_CALL PFNGLGETUNIFORMLOCATIONPROC glad_glGetUniformLocation;
+#define glGetUniformLocation glad_glGetUniformLocation
+GLAD_API_CALL PFNGLGETUNIFORMFVPROC glad_glGetUniformfv;
+#define glGetUniformfv glad_glGetUniformfv
+GLAD_API_CALL PFNGLGETUNIFORMIVPROC glad_glGetUniformiv;
+#define glGetUniformiv glad_glGetUniformiv
+GLAD_API_CALL PFNGLGETUNIFORMUIVPROC glad_glGetUniformuiv;
+#define glGetUniformuiv glad_glGetUniformuiv
+GLAD_API_CALL PFNGLGETVERTEXATTRIBIIVPROC glad_glGetVertexAttribIiv;
+#define glGetVertexAttribIiv glad_glGetVertexAttribIiv
+GLAD_API_CALL PFNGLGETVERTEXATTRIBIUIVPROC glad_glGetVertexAttribIuiv;
+#define glGetVertexAttribIuiv glad_glGetVertexAttribIuiv
+GLAD_API_CALL PFNGLGETVERTEXATTRIBPOINTERVPROC glad_glGetVertexAttribPointerv;
+#define glGetVertexAttribPointerv glad_glGetVertexAttribPointerv
+GLAD_API_CALL PFNGLGETVERTEXATTRIBDVPROC glad_glGetVertexAttribdv;
+#define glGetVertexAttribdv glad_glGetVertexAttribdv
+GLAD_API_CALL PFNGLGETVERTEXATTRIBFVPROC glad_glGetVertexAttribfv;
+#define glGetVertexAttribfv glad_glGetVertexAttribfv
+GLAD_API_CALL PFNGLGETVERTEXATTRIBIVPROC glad_glGetVertexAttribiv;
+#define glGetVertexAttribiv glad_glGetVertexAttribiv
+GLAD_API_CALL PFNGLHINTPROC glad_glHint;
+#define glHint glad_glHint
+GLAD_API_CALL PFNGLISBUFFERPROC glad_glIsBuffer;
+#define glIsBuffer glad_glIsBuffer
+GLAD_API_CALL PFNGLISENABLEDPROC glad_glIsEnabled;
+#define glIsEnabled glad_glIsEnabled
+GLAD_API_CALL PFNGLISENABLEDIPROC glad_glIsEnabledi;
+#define glIsEnabledi glad_glIsEnabledi
+GLAD_API_CALL PFNGLISFRAMEBUFFERPROC glad_glIsFramebuffer;
+#define glIsFramebuffer glad_glIsFramebuffer
+GLAD_API_CALL PFNGLISPROGRAMPROC glad_glIsProgram;
+#define glIsProgram glad_glIsProgram
+GLAD_API_CALL PFNGLISQUERYPROC glad_glIsQuery;
+#define glIsQuery glad_glIsQuery
+GLAD_API_CALL PFNGLISRENDERBUFFERPROC glad_glIsRenderbuffer;
+#define glIsRenderbuffer glad_glIsRenderbuffer
+GLAD_API_CALL PFNGLISSAMPLERPROC glad_glIsSampler;
+#define glIsSampler glad_glIsSampler
+GLAD_API_CALL PFNGLISSHADERPROC glad_glIsShader;
+#define glIsShader glad_glIsShader
+GLAD_API_CALL PFNGLISSYNCPROC glad_glIsSync;
+#define glIsSync glad_glIsSync
+GLAD_API_CALL PFNGLISTEXTUREPROC glad_glIsTexture;
+#define glIsTexture glad_glIsTexture
+GLAD_API_CALL PFNGLISVERTEXARRAYPROC glad_glIsVertexArray;
+#define glIsVertexArray glad_glIsVertexArray
+GLAD_API_CALL PFNGLLINEWIDTHPROC glad_glLineWidth;
+#define glLineWidth glad_glLineWidth
+GLAD_API_CALL PFNGLLINKPROGRAMPROC glad_glLinkProgram;
+#define glLinkProgram glad_glLinkProgram
+GLAD_API_CALL PFNGLLOGICOPPROC glad_glLogicOp;
+#define glLogicOp glad_glLogicOp
+GLAD_API_CALL PFNGLMAPBUFFERPROC glad_glMapBuffer;
+#define glMapBuffer glad_glMapBuffer
+GLAD_API_CALL PFNGLMAPBUFFERRANGEPROC glad_glMapBufferRange;
+#define glMapBufferRange glad_glMapBufferRange
+GLAD_API_CALL PFNGLMULTIDRAWARRAYSPROC glad_glMultiDrawArrays;
+#define glMultiDrawArrays glad_glMultiDrawArrays
+GLAD_API_CALL PFNGLMULTIDRAWELEMENTSPROC glad_glMultiDrawElements;
+#define glMultiDrawElements glad_glMultiDrawElements
+GLAD_API_CALL PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC glad_glMultiDrawElementsBaseVertex;
+#define glMultiDrawElementsBaseVertex glad_glMultiDrawElementsBaseVertex
+GLAD_API_CALL PFNGLPIXELSTOREFPROC glad_glPixelStoref;
+#define glPixelStoref glad_glPixelStoref
+GLAD_API_CALL PFNGLPIXELSTOREIPROC glad_glPixelStorei;
+#define glPixelStorei glad_glPixelStorei
+GLAD_API_CALL PFNGLPOINTPARAMETERFPROC glad_glPointParameterf;
+#define glPointParameterf glad_glPointParameterf
+GLAD_API_CALL PFNGLPOINTPARAMETERFVPROC glad_glPointParameterfv;
+#define glPointParameterfv glad_glPointParameterfv
+GLAD_API_CALL PFNGLPOINTPARAMETERIPROC glad_glPointParameteri;
+#define glPointParameteri glad_glPointParameteri
+GLAD_API_CALL PFNGLPOINTPARAMETERIVPROC glad_glPointParameteriv;
+#define glPointParameteriv glad_glPointParameteriv
+GLAD_API_CALL PFNGLPOINTSIZEPROC glad_glPointSize;
+#define glPointSize glad_glPointSize
+GLAD_API_CALL PFNGLPOLYGONMODEPROC glad_glPolygonMode;
+#define glPolygonMode glad_glPolygonMode
+GLAD_API_CALL PFNGLPOLYGONOFFSETPROC glad_glPolygonOffset;
+#define glPolygonOffset glad_glPolygonOffset
+GLAD_API_CALL PFNGLPRIMITIVERESTARTINDEXPROC glad_glPrimitiveRestartIndex;
+#define glPrimitiveRestartIndex glad_glPrimitiveRestartIndex
+GLAD_API_CALL PFNGLPROVOKINGVERTEXPROC glad_glProvokingVertex;
+#define glProvokingVertex glad_glProvokingVertex
+GLAD_API_CALL PFNGLQUERYCOUNTERPROC glad_glQueryCounter;
+#define glQueryCounter glad_glQueryCounter
+GLAD_API_CALL PFNGLREADBUFFERPROC glad_glReadBuffer;
+#define glReadBuffer glad_glReadBuffer
+GLAD_API_CALL PFNGLREADPIXELSPROC glad_glReadPixels;
+#define glReadPixels glad_glReadPixels
+GLAD_API_CALL PFNGLRENDERBUFFERSTORAGEPROC glad_glRenderbufferStorage;
+#define glRenderbufferStorage glad_glRenderbufferStorage
+GLAD_API_CALL PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC glad_glRenderbufferStorageMultisample;
+#define glRenderbufferStorageMultisample glad_glRenderbufferStorageMultisample
+GLAD_API_CALL PFNGLSAMPLECOVERAGEPROC glad_glSampleCoverage;
+#define glSampleCoverage glad_glSampleCoverage
+GLAD_API_CALL PFNGLSAMPLEMASKIPROC glad_glSampleMaski;
+#define glSampleMaski glad_glSampleMaski
+GLAD_API_CALL PFNGLSAMPLERPARAMETERIIVPROC glad_glSamplerParameterIiv;
+#define glSamplerParameterIiv glad_glSamplerParameterIiv
+GLAD_API_CALL PFNGLSAMPLERPARAMETERIUIVPROC glad_glSamplerParameterIuiv;
+#define glSamplerParameterIuiv glad_glSamplerParameterIuiv
+GLAD_API_CALL PFNGLSAMPLERPARAMETERFPROC glad_glSamplerParameterf;
+#define glSamplerParameterf glad_glSamplerParameterf
+GLAD_API_CALL PFNGLSAMPLERPARAMETERFVPROC glad_glSamplerParameterfv;
+#define glSamplerParameterfv glad_glSamplerParameterfv
+GLAD_API_CALL PFNGLSAMPLERPARAMETERIPROC glad_glSamplerParameteri;
+#define glSamplerParameteri glad_glSamplerParameteri
+GLAD_API_CALL PFNGLSAMPLERPARAMETERIVPROC glad_glSamplerParameteriv;
+#define glSamplerParameteriv glad_glSamplerParameteriv
+GLAD_API_CALL PFNGLSCISSORPROC glad_glScissor;
+#define glScissor glad_glScissor
+GLAD_API_CALL PFNGLSHADERSOURCEPROC glad_glShaderSource;
+#define glShaderSource glad_glShaderSource
+GLAD_API_CALL PFNGLSTENCILFUNCPROC glad_glStencilFunc;
+#define glStencilFunc glad_glStencilFunc
+GLAD_API_CALL PFNGLSTENCILFUNCSEPARATEPROC glad_glStencilFuncSeparate;
+#define glStencilFuncSeparate glad_glStencilFuncSeparate
+GLAD_API_CALL PFNGLSTENCILMASKPROC glad_glStencilMask;
+#define glStencilMask glad_glStencilMask
+GLAD_API_CALL PFNGLSTENCILMASKSEPARATEPROC glad_glStencilMaskSeparate;
+#define glStencilMaskSeparate glad_glStencilMaskSeparate
+GLAD_API_CALL PFNGLSTENCILOPPROC glad_glStencilOp;
+#define glStencilOp glad_glStencilOp
+GLAD_API_CALL PFNGLSTENCILOPSEPARATEPROC glad_glStencilOpSeparate;
+#define glStencilOpSeparate glad_glStencilOpSeparate
+GLAD_API_CALL PFNGLTEXBUFFERPROC glad_glTexBuffer;
+#define glTexBuffer glad_glTexBuffer
+GLAD_API_CALL PFNGLTEXIMAGE1DPROC glad_glTexImage1D;
+#define glTexImage1D glad_glTexImage1D
+GLAD_API_CALL PFNGLTEXIMAGE2DPROC glad_glTexImage2D;
+#define glTexImage2D glad_glTexImage2D
+GLAD_API_CALL PFNGLTEXIMAGE2DMULTISAMPLEPROC glad_glTexImage2DMultisample;
+#define glTexImage2DMultisample glad_glTexImage2DMultisample
+GLAD_API_CALL PFNGLTEXIMAGE3DPROC glad_glTexImage3D;
+#define glTexImage3D glad_glTexImage3D
+GLAD_API_CALL PFNGLTEXIMAGE3DMULTISAMPLEPROC glad_glTexImage3DMultisample;
+#define glTexImage3DMultisample glad_glTexImage3DMultisample
+GLAD_API_CALL PFNGLTEXPARAMETERIIVPROC glad_glTexParameterIiv;
+#define glTexParameterIiv glad_glTexParameterIiv
+GLAD_API_CALL PFNGLTEXPARAMETERIUIVPROC glad_glTexParameterIuiv;
+#define glTexParameterIuiv glad_glTexParameterIuiv
+GLAD_API_CALL PFNGLTEXPARAMETERFPROC glad_glTexParameterf;
+#define glTexParameterf glad_glTexParameterf
+GLAD_API_CALL PFNGLTEXPARAMETERFVPROC glad_glTexParameterfv;
+#define glTexParameterfv glad_glTexParameterfv
+GLAD_API_CALL PFNGLTEXPARAMETERIPROC glad_glTexParameteri;
+#define glTexParameteri glad_glTexParameteri
+GLAD_API_CALL PFNGLTEXPARAMETERIVPROC glad_glTexParameteriv;
+#define glTexParameteriv glad_glTexParameteriv
+GLAD_API_CALL PFNGLTEXSUBIMAGE1DPROC glad_glTexSubImage1D;
+#define glTexSubImage1D glad_glTexSubImage1D
+GLAD_API_CALL PFNGLTEXSUBIMAGE2DPROC glad_glTexSubImage2D;
+#define glTexSubImage2D glad_glTexSubImage2D
+GLAD_API_CALL PFNGLTEXSUBIMAGE3DPROC glad_glTexSubImage3D;
+#define glTexSubImage3D glad_glTexSubImage3D
+GLAD_API_CALL PFNGLTRANSFORMFEEDBACKVARYINGSPROC glad_glTransformFeedbackVaryings;
+#define glTransformFeedbackVaryings glad_glTransformFeedbackVaryings
+GLAD_API_CALL PFNGLUNIFORM1FPROC glad_glUniform1f;
+#define glUniform1f glad_glUniform1f
+GLAD_API_CALL PFNGLUNIFORM1FVPROC glad_glUniform1fv;
+#define glUniform1fv glad_glUniform1fv
+GLAD_API_CALL PFNGLUNIFORM1IPROC glad_glUniform1i;
+#define glUniform1i glad_glUniform1i
+GLAD_API_CALL PFNGLUNIFORM1IVPROC glad_glUniform1iv;
+#define glUniform1iv glad_glUniform1iv
+GLAD_API_CALL PFNGLUNIFORM1UIPROC glad_glUniform1ui;
+#define glUniform1ui glad_glUniform1ui
+GLAD_API_CALL PFNGLUNIFORM1UIVPROC glad_glUniform1uiv;
+#define glUniform1uiv glad_glUniform1uiv
+GLAD_API_CALL PFNGLUNIFORM2FPROC glad_glUniform2f;
+#define glUniform2f glad_glUniform2f
+GLAD_API_CALL PFNGLUNIFORM2FVPROC glad_glUniform2fv;
+#define glUniform2fv glad_glUniform2fv
+GLAD_API_CALL PFNGLUNIFORM2IPROC glad_glUniform2i;
+#define glUniform2i glad_glUniform2i
+GLAD_API_CALL PFNGLUNIFORM2IVPROC glad_glUniform2iv;
+#define glUniform2iv glad_glUniform2iv
+GLAD_API_CALL PFNGLUNIFORM2UIPROC glad_glUniform2ui;
+#define glUniform2ui glad_glUniform2ui
+GLAD_API_CALL PFNGLUNIFORM2UIVPROC glad_glUniform2uiv;
+#define glUniform2uiv glad_glUniform2uiv
+GLAD_API_CALL PFNGLUNIFORM3FPROC glad_glUniform3f;
+#define glUniform3f glad_glUniform3f
+GLAD_API_CALL PFNGLUNIFORM3FVPROC glad_glUniform3fv;
+#define glUniform3fv glad_glUniform3fv
+GLAD_API_CALL PFNGLUNIFORM3IPROC glad_glUniform3i;
+#define glUniform3i glad_glUniform3i
+GLAD_API_CALL PFNGLUNIFORM3IVPROC glad_glUniform3iv;
+#define glUniform3iv glad_glUniform3iv
+GLAD_API_CALL PFNGLUNIFORM3UIPROC glad_glUniform3ui;
+#define glUniform3ui glad_glUniform3ui
+GLAD_API_CALL PFNGLUNIFORM3UIVPROC glad_glUniform3uiv;
+#define glUniform3uiv glad_glUniform3uiv
+GLAD_API_CALL PFNGLUNIFORM4FPROC glad_glUniform4f;
+#define glUniform4f glad_glUniform4f
+GLAD_API_CALL PFNGLUNIFORM4FVPROC glad_glUniform4fv;
+#define glUniform4fv glad_glUniform4fv
+GLAD_API_CALL PFNGLUNIFORM4IPROC glad_glUniform4i;
+#define glUniform4i glad_glUniform4i
+GLAD_API_CALL PFNGLUNIFORM4IVPROC glad_glUniform4iv;
+#define glUniform4iv glad_glUniform4iv
+GLAD_API_CALL PFNGLUNIFORM4UIPROC glad_glUniform4ui;
+#define glUniform4ui glad_glUniform4ui
+GLAD_API_CALL PFNGLUNIFORM4UIVPROC glad_glUniform4uiv;
+#define glUniform4uiv glad_glUniform4uiv
+GLAD_API_CALL PFNGLUNIFORMBLOCKBINDINGPROC glad_glUniformBlockBinding;
+#define glUniformBlockBinding glad_glUniformBlockBinding
+GLAD_API_CALL PFNGLUNIFORMMATRIX2FVPROC glad_glUniformMatrix2fv;
+#define glUniformMatrix2fv glad_glUniformMatrix2fv
+GLAD_API_CALL PFNGLUNIFORMMATRIX2X3FVPROC glad_glUniformMatrix2x3fv;
+#define glUniformMatrix2x3fv glad_glUniformMatrix2x3fv
+GLAD_API_CALL PFNGLUNIFORMMATRIX2X4FVPROC glad_glUniformMatrix2x4fv;
+#define glUniformMatrix2x4fv glad_glUniformMatrix2x4fv
+GLAD_API_CALL PFNGLUNIFORMMATRIX3FVPROC glad_glUniformMatrix3fv;
+#define glUniformMatrix3fv glad_glUniformMatrix3fv
+GLAD_API_CALL PFNGLUNIFORMMATRIX3X2FVPROC glad_glUniformMatrix3x2fv;
+#define glUniformMatrix3x2fv glad_glUniformMatrix3x2fv
+GLAD_API_CALL PFNGLUNIFORMMATRIX3X4FVPROC glad_glUniformMatrix3x4fv;
+#define glUniformMatrix3x4fv glad_glUniformMatrix3x4fv
+GLAD_API_CALL PFNGLUNIFORMMATRIX4FVPROC glad_glUniformMatrix4fv;
+#define glUniformMatrix4fv glad_glUniformMatrix4fv
+GLAD_API_CALL PFNGLUNIFORMMATRIX4X2FVPROC glad_glUniformMatrix4x2fv;
+#define glUniformMatrix4x2fv glad_glUniformMatrix4x2fv
+GLAD_API_CALL PFNGLUNIFORMMATRIX4X3FVPROC glad_glUniformMatrix4x3fv;
+#define glUniformMatrix4x3fv glad_glUniformMatrix4x3fv
+GLAD_API_CALL PFNGLUNMAPBUFFERPROC glad_glUnmapBuffer;
+#define glUnmapBuffer glad_glUnmapBuffer
+GLAD_API_CALL PFNGLUSEPROGRAMPROC glad_glUseProgram;
+#define glUseProgram glad_glUseProgram
+GLAD_API_CALL PFNGLVALIDATEPROGRAMPROC glad_glValidateProgram;
+#define glValidateProgram glad_glValidateProgram
+GLAD_API_CALL PFNGLVERTEXATTRIB1DPROC glad_glVertexAttrib1d;
+#define glVertexAttrib1d glad_glVertexAttrib1d
+GLAD_API_CALL PFNGLVERTEXATTRIB1DVPROC glad_glVertexAttrib1dv;
+#define glVertexAttrib1dv glad_glVertexAttrib1dv
+GLAD_API_CALL PFNGLVERTEXATTRIB1FPROC glad_glVertexAttrib1f;
+#define glVertexAttrib1f glad_glVertexAttrib1f
+GLAD_API_CALL PFNGLVERTEXATTRIB1FVPROC glad_glVertexAttrib1fv;
+#define glVertexAttrib1fv glad_glVertexAttrib1fv
+GLAD_API_CALL PFNGLVERTEXATTRIB1SPROC glad_glVertexAttrib1s;
+#define glVertexAttrib1s glad_glVertexAttrib1s
+GLAD_API_CALL PFNGLVERTEXATTRIB1SVPROC glad_glVertexAttrib1sv;
+#define glVertexAttrib1sv glad_glVertexAttrib1sv
+GLAD_API_CALL PFNGLVERTEXATTRIB2DPROC glad_glVertexAttrib2d;
+#define glVertexAttrib2d glad_glVertexAttrib2d
+GLAD_API_CALL PFNGLVERTEXATTRIB2DVPROC glad_glVertexAttrib2dv;
+#define glVertexAttrib2dv glad_glVertexAttrib2dv
+GLAD_API_CALL PFNGLVERTEXATTRIB2FPROC glad_glVertexAttrib2f;
+#define glVertexAttrib2f glad_glVertexAttrib2f
+GLAD_API_CALL PFNGLVERTEXATTRIB2FVPROC glad_glVertexAttrib2fv;
+#define glVertexAttrib2fv glad_glVertexAttrib2fv
+GLAD_API_CALL PFNGLVERTEXATTRIB2SPROC glad_glVertexAttrib2s;
+#define glVertexAttrib2s glad_glVertexAttrib2s
+GLAD_API_CALL PFNGLVERTEXATTRIB2SVPROC glad_glVertexAttrib2sv;
+#define glVertexAttrib2sv glad_glVertexAttrib2sv
+GLAD_API_CALL PFNGLVERTEXATTRIB3DPROC glad_glVertexAttrib3d;
+#define glVertexAttrib3d glad_glVertexAttrib3d
+GLAD_API_CALL PFNGLVERTEXATTRIB3DVPROC glad_glVertexAttrib3dv;
+#define glVertexAttrib3dv glad_glVertexAttrib3dv
+GLAD_API_CALL PFNGLVERTEXATTRIB3FPROC glad_glVertexAttrib3f;
+#define glVertexAttrib3f glad_glVertexAttrib3f
+GLAD_API_CALL PFNGLVERTEXATTRIB3FVPROC glad_glVertexAttrib3fv;
+#define glVertexAttrib3fv glad_glVertexAttrib3fv
+GLAD_API_CALL PFNGLVERTEXATTRIB3SPROC glad_glVertexAttrib3s;
+#define glVertexAttrib3s glad_glVertexAttrib3s
+GLAD_API_CALL PFNGLVERTEXATTRIB3SVPROC glad_glVertexAttrib3sv;
+#define glVertexAttrib3sv glad_glVertexAttrib3sv
+GLAD_API_CALL PFNGLVERTEXATTRIB4NBVPROC glad_glVertexAttrib4Nbv;
+#define glVertexAttrib4Nbv glad_glVertexAttrib4Nbv
+GLAD_API_CALL PFNGLVERTEXATTRIB4NIVPROC glad_glVertexAttrib4Niv;
+#define glVertexAttrib4Niv glad_glVertexAttrib4Niv
+GLAD_API_CALL PFNGLVERTEXATTRIB4NSVPROC glad_glVertexAttrib4Nsv;
+#define glVertexAttrib4Nsv glad_glVertexAttrib4Nsv
+GLAD_API_CALL PFNGLVERTEXATTRIB4NUBPROC glad_glVertexAttrib4Nub;
+#define glVertexAttrib4Nub glad_glVertexAttrib4Nub
+GLAD_API_CALL PFNGLVERTEXATTRIB4NUBVPROC glad_glVertexAttrib4Nubv;
+#define glVertexAttrib4Nubv glad_glVertexAttrib4Nubv
+GLAD_API_CALL PFNGLVERTEXATTRIB4NUIVPROC glad_glVertexAttrib4Nuiv;
+#define glVertexAttrib4Nuiv glad_glVertexAttrib4Nuiv
+GLAD_API_CALL PFNGLVERTEXATTRIB4NUSVPROC glad_glVertexAttrib4Nusv;
+#define glVertexAttrib4Nusv glad_glVertexAttrib4Nusv
+GLAD_API_CALL PFNGLVERTEXATTRIB4BVPROC glad_glVertexAttrib4bv;
+#define glVertexAttrib4bv glad_glVertexAttrib4bv
+GLAD_API_CALL PFNGLVERTEXATTRIB4DPROC glad_glVertexAttrib4d;
+#define glVertexAttrib4d glad_glVertexAttrib4d
+GLAD_API_CALL PFNGLVERTEXATTRIB4DVPROC glad_glVertexAttrib4dv;
+#define glVertexAttrib4dv glad_glVertexAttrib4dv
+GLAD_API_CALL PFNGLVERTEXATTRIB4FPROC glad_glVertexAttrib4f;
+#define glVertexAttrib4f glad_glVertexAttrib4f
+GLAD_API_CALL PFNGLVERTEXATTRIB4FVPROC glad_glVertexAttrib4fv;
+#define glVertexAttrib4fv glad_glVertexAttrib4fv
+GLAD_API_CALL PFNGLVERTEXATTRIB4IVPROC glad_glVertexAttrib4iv;
+#define glVertexAttrib4iv glad_glVertexAttrib4iv
+GLAD_API_CALL PFNGLVERTEXATTRIB4SPROC glad_glVertexAttrib4s;
+#define glVertexAttrib4s glad_glVertexAttrib4s
+GLAD_API_CALL PFNGLVERTEXATTRIB4SVPROC glad_glVertexAttrib4sv;
+#define glVertexAttrib4sv glad_glVertexAttrib4sv
+GLAD_API_CALL PFNGLVERTEXATTRIB4UBVPROC glad_glVertexAttrib4ubv;
+#define glVertexAttrib4ubv glad_glVertexAttrib4ubv
+GLAD_API_CALL PFNGLVERTEXATTRIB4UIVPROC glad_glVertexAttrib4uiv;
+#define glVertexAttrib4uiv glad_glVertexAttrib4uiv
+GLAD_API_CALL PFNGLVERTEXATTRIB4USVPROC glad_glVertexAttrib4usv;
+#define glVertexAttrib4usv glad_glVertexAttrib4usv
+GLAD_API_CALL PFNGLVERTEXATTRIBDIVISORPROC glad_glVertexAttribDivisor;
+#define glVertexAttribDivisor glad_glVertexAttribDivisor
+GLAD_API_CALL PFNGLVERTEXATTRIBI1IPROC glad_glVertexAttribI1i;
+#define glVertexAttribI1i glad_glVertexAttribI1i
+GLAD_API_CALL PFNGLVERTEXATTRIBI1IVPROC glad_glVertexAttribI1iv;
+#define glVertexAttribI1iv glad_glVertexAttribI1iv
+GLAD_API_CALL PFNGLVERTEXATTRIBI1UIPROC glad_glVertexAttribI1ui;
+#define glVertexAttribI1ui glad_glVertexAttribI1ui
+GLAD_API_CALL PFNGLVERTEXATTRIBI1UIVPROC glad_glVertexAttribI1uiv;
+#define glVertexAttribI1uiv glad_glVertexAttribI1uiv
+GLAD_API_CALL PFNGLVERTEXATTRIBI2IPROC glad_glVertexAttribI2i;
+#define glVertexAttribI2i glad_glVertexAttribI2i
+GLAD_API_CALL PFNGLVERTEXATTRIBI2IVPROC glad_glVertexAttribI2iv;
+#define glVertexAttribI2iv glad_glVertexAttribI2iv
+GLAD_API_CALL PFNGLVERTEXATTRIBI2UIPROC glad_glVertexAttribI2ui;
+#define glVertexAttribI2ui glad_glVertexAttribI2ui
+GLAD_API_CALL PFNGLVERTEXATTRIBI2UIVPROC glad_glVertexAttribI2uiv;
+#define glVertexAttribI2uiv glad_glVertexAttribI2uiv
+GLAD_API_CALL PFNGLVERTEXATTRIBI3IPROC glad_glVertexAttribI3i;
+#define glVertexAttribI3i glad_glVertexAttribI3i
+GLAD_API_CALL PFNGLVERTEXATTRIBI3IVPROC glad_glVertexAttribI3iv;
+#define glVertexAttribI3iv glad_glVertexAttribI3iv
+GLAD_API_CALL PFNGLVERTEXATTRIBI3UIPROC glad_glVertexAttribI3ui;
+#define glVertexAttribI3ui glad_glVertexAttribI3ui
+GLAD_API_CALL PFNGLVERTEXATTRIBI3UIVPROC glad_glVertexAttribI3uiv;
+#define glVertexAttribI3uiv glad_glVertexAttribI3uiv
+GLAD_API_CALL PFNGLVERTEXATTRIBI4BVPROC glad_glVertexAttribI4bv;
+#define glVertexAttribI4bv glad_glVertexAttribI4bv
+GLAD_API_CALL PFNGLVERTEXATTRIBI4IPROC glad_glVertexAttribI4i;
+#define glVertexAttribI4i glad_glVertexAttribI4i
+GLAD_API_CALL PFNGLVERTEXATTRIBI4IVPROC glad_glVertexAttribI4iv;
+#define glVertexAttribI4iv glad_glVertexAttribI4iv
+GLAD_API_CALL PFNGLVERTEXATTRIBI4SVPROC glad_glVertexAttribI4sv;
+#define glVertexAttribI4sv glad_glVertexAttribI4sv
+GLAD_API_CALL PFNGLVERTEXATTRIBI4UBVPROC glad_glVertexAttribI4ubv;
+#define glVertexAttribI4ubv glad_glVertexAttribI4ubv
+GLAD_API_CALL PFNGLVERTEXATTRIBI4UIPROC glad_glVertexAttribI4ui;
+#define glVertexAttribI4ui glad_glVertexAttribI4ui
+GLAD_API_CALL PFNGLVERTEXATTRIBI4UIVPROC glad_glVertexAttribI4uiv;
+#define glVertexAttribI4uiv glad_glVertexAttribI4uiv
+GLAD_API_CALL PFNGLVERTEXATTRIBI4USVPROC glad_glVertexAttribI4usv;
+#define glVertexAttribI4usv glad_glVertexAttribI4usv
+GLAD_API_CALL PFNGLVERTEXATTRIBIPOINTERPROC glad_glVertexAttribIPointer;
+#define glVertexAttribIPointer glad_glVertexAttribIPointer
+GLAD_API_CALL PFNGLVERTEXATTRIBP1UIPROC glad_glVertexAttribP1ui;
+#define glVertexAttribP1ui glad_glVertexAttribP1ui
+GLAD_API_CALL PFNGLVERTEXATTRIBP1UIVPROC glad_glVertexAttribP1uiv;
+#define glVertexAttribP1uiv glad_glVertexAttribP1uiv
+GLAD_API_CALL PFNGLVERTEXATTRIBP2UIPROC glad_glVertexAttribP2ui;
+#define glVertexAttribP2ui glad_glVertexAttribP2ui
+GLAD_API_CALL PFNGLVERTEXATTRIBP2UIVPROC glad_glVertexAttribP2uiv;
+#define glVertexAttribP2uiv glad_glVertexAttribP2uiv
+GLAD_API_CALL PFNGLVERTEXATTRIBP3UIPROC glad_glVertexAttribP3ui;
+#define glVertexAttribP3ui glad_glVertexAttribP3ui
+GLAD_API_CALL PFNGLVERTEXATTRIBP3UIVPROC glad_glVertexAttribP3uiv;
+#define glVertexAttribP3uiv glad_glVertexAttribP3uiv
+GLAD_API_CALL PFNGLVERTEXATTRIBP4UIPROC glad_glVertexAttribP4ui;
+#define glVertexAttribP4ui glad_glVertexAttribP4ui
+GLAD_API_CALL PFNGLVERTEXATTRIBP4UIVPROC glad_glVertexAttribP4uiv;
+#define glVertexAttribP4uiv glad_glVertexAttribP4uiv
+GLAD_API_CALL PFNGLVERTEXATTRIBPOINTERPROC glad_glVertexAttribPointer;
+#define glVertexAttribPointer glad_glVertexAttribPointer
+GLAD_API_CALL PFNGLVIEWPORTPROC glad_glViewport;
+#define glViewport glad_glViewport
+GLAD_API_CALL PFNGLWAITSYNCPROC glad_glWaitSync;
+#define glWaitSync glad_glWaitSync
+
+
+
+
+
+GLAD_API_CALL int gladLoadGLUserPtr( GLADuserptrloadfunc load, void *userptr);
+GLAD_API_CALL int gladLoadGL( GLADloadfunc load);
+
+
+#ifdef GLAD_GL
+
+GLAD_API_CALL int gladLoaderLoadGL(void);
+GLAD_API_CALL void gladLoaderUnloadGL(void);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+/* Source */
+#ifdef GLAD_GL_IMPLEMENTATION
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef GLAD_IMPL_UTIL_C_
+#define GLAD_IMPL_UTIL_C_
+
+#ifdef _MSC_VER
+#define GLAD_IMPL_UTIL_SSCANF sscanf_s
+#else
+#define GLAD_IMPL_UTIL_SSCANF sscanf
+#endif
+
+#endif /* GLAD_IMPL_UTIL_C_ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+int GLAD_GL_VERSION_1_0 = 0;
+int GLAD_GL_VERSION_1_1 = 0;
+int GLAD_GL_VERSION_1_2 = 0;
+int GLAD_GL_VERSION_1_3 = 0;
+int GLAD_GL_VERSION_1_4 = 0;
+int GLAD_GL_VERSION_1_5 = 0;
+int GLAD_GL_VERSION_2_0 = 0;
+int GLAD_GL_VERSION_2_1 = 0;
+int GLAD_GL_VERSION_3_0 = 0;
+int GLAD_GL_VERSION_3_1 = 0;
+int GLAD_GL_VERSION_3_2 = 0;
+int GLAD_GL_VERSION_3_3 = 0;
+
+
+
+PFNGLACTIVETEXTUREPROC glad_glActiveTexture = NULL;
+PFNGLATTACHSHADERPROC glad_glAttachShader = NULL;
+PFNGLBEGINCONDITIONALRENDERPROC glad_glBeginConditionalRender = NULL;
+PFNGLBEGINQUERYPROC glad_glBeginQuery = NULL;
+PFNGLBEGINTRANSFORMFEEDBACKPROC glad_glBeginTransformFeedback = NULL;
+PFNGLBINDATTRIBLOCATIONPROC glad_glBindAttribLocation = NULL;
+PFNGLBINDBUFFERPROC glad_glBindBuffer = NULL;
+PFNGLBINDBUFFERBASEPROC glad_glBindBufferBase = NULL;
+PFNGLBINDBUFFERRANGEPROC glad_glBindBufferRange = NULL;
+PFNGLBINDFRAGDATALOCATIONPROC glad_glBindFragDataLocation = NULL;
+PFNGLBINDFRAGDATALOCATIONINDEXEDPROC glad_glBindFragDataLocationIndexed = NULL;
+PFNGLBINDFRAMEBUFFERPROC glad_glBindFramebuffer = NULL;
+PFNGLBINDRENDERBUFFERPROC glad_glBindRenderbuffer = NULL;
+PFNGLBINDSAMPLERPROC glad_glBindSampler = NULL;
+PFNGLBINDTEXTUREPROC glad_glBindTexture = NULL;
+PFNGLBINDVERTEXARRAYPROC glad_glBindVertexArray = NULL;
+PFNGLBLENDCOLORPROC glad_glBlendColor = NULL;
+PFNGLBLENDEQUATIONPROC glad_glBlendEquation = NULL;
+PFNGLBLENDEQUATIONSEPARATEPROC glad_glBlendEquationSeparate = NULL;
+PFNGLBLENDFUNCPROC glad_glBlendFunc = NULL;
+PFNGLBLENDFUNCSEPARATEPROC glad_glBlendFuncSeparate = NULL;
+PFNGLBLITFRAMEBUFFERPROC glad_glBlitFramebuffer = NULL;
+PFNGLBUFFERDATAPROC glad_glBufferData = NULL;
+PFNGLBUFFERSUBDATAPROC glad_glBufferSubData = NULL;
+PFNGLCHECKFRAMEBUFFERSTATUSPROC glad_glCheckFramebufferStatus = NULL;
+PFNGLCLAMPCOLORPROC glad_glClampColor = NULL;
+PFNGLCLEARPROC glad_glClear = NULL;
+PFNGLCLEARBUFFERFIPROC glad_glClearBufferfi = NULL;
+PFNGLCLEARBUFFERFVPROC glad_glClearBufferfv = NULL;
+PFNGLCLEARBUFFERIVPROC glad_glClearBufferiv = NULL;
+PFNGLCLEARBUFFERUIVPROC glad_glClearBufferuiv = NULL;
+PFNGLCLEARCOLORPROC glad_glClearColor = NULL;
+PFNGLCLEARDEPTHPROC glad_glClearDepth = NULL;
+PFNGLCLEARSTENCILPROC glad_glClearStencil = NULL;
+PFNGLCLIENTWAITSYNCPROC glad_glClientWaitSync = NULL;
+PFNGLCOLORMASKPROC glad_glColorMask = NULL;
+PFNGLCOLORMASKIPROC glad_glColorMaski = NULL;
+PFNGLCOMPILESHADERPROC glad_glCompileShader = NULL;
+PFNGLCOMPRESSEDTEXIMAGE1DPROC glad_glCompressedTexImage1D = NULL;
+PFNGLCOMPRESSEDTEXIMAGE2DPROC glad_glCompressedTexImage2D = NULL;
+PFNGLCOMPRESSEDTEXIMAGE3DPROC glad_glCompressedTexImage3D = NULL;
+PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC glad_glCompressedTexSubImage1D = NULL;
+PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC glad_glCompressedTexSubImage2D = NULL;
+PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC glad_glCompressedTexSubImage3D = NULL;
+PFNGLCOPYBUFFERSUBDATAPROC glad_glCopyBufferSubData = NULL;
+PFNGLCOPYTEXIMAGE1DPROC glad_glCopyTexImage1D = NULL;
+PFNGLCOPYTEXIMAGE2DPROC glad_glCopyTexImage2D = NULL;
+PFNGLCOPYTEXSUBIMAGE1DPROC glad_glCopyTexSubImage1D = NULL;
+PFNGLCOPYTEXSUBIMAGE2DPROC glad_glCopyTexSubImage2D = NULL;
+PFNGLCOPYTEXSUBIMAGE3DPROC glad_glCopyTexSubImage3D = NULL;
+PFNGLCREATEPROGRAMPROC glad_glCreateProgram = NULL;
+PFNGLCREATESHADERPROC glad_glCreateShader = NULL;
+PFNGLCULLFACEPROC glad_glCullFace = NULL;
+PFNGLDELETEBUFFERSPROC glad_glDeleteBuffers = NULL;
+PFNGLDELETEFRAMEBUFFERSPROC glad_glDeleteFramebuffers = NULL;
+PFNGLDELETEPROGRAMPROC glad_glDeleteProgram = NULL;
+PFNGLDELETEQUERIESPROC glad_glDeleteQueries = NULL;
+PFNGLDELETERENDERBUFFERSPROC glad_glDeleteRenderbuffers = NULL;
+PFNGLDELETESAMPLERSPROC glad_glDeleteSamplers = NULL;
+PFNGLDELETESHADERPROC glad_glDeleteShader = NULL;
+PFNGLDELETESYNCPROC glad_glDeleteSync = NULL;
+PFNGLDELETETEXTURESPROC glad_glDeleteTextures = NULL;
+PFNGLDELETEVERTEXARRAYSPROC glad_glDeleteVertexArrays = NULL;
+PFNGLDEPTHFUNCPROC glad_glDepthFunc = NULL;
+PFNGLDEPTHMASKPROC glad_glDepthMask = NULL;
+PFNGLDEPTHRANGEPROC glad_glDepthRange = NULL;
+PFNGLDETACHSHADERPROC glad_glDetachShader = NULL;
+PFNGLDISABLEPROC glad_glDisable = NULL;
+PFNGLDISABLEVERTEXATTRIBARRAYPROC glad_glDisableVertexAttribArray = NULL;
+PFNGLDISABLEIPROC glad_glDisablei = NULL;
+PFNGLDRAWARRAYSPROC glad_glDrawArrays = NULL;
+PFNGLDRAWARRAYSINSTANCEDPROC glad_glDrawArraysInstanced = NULL;
+PFNGLDRAWBUFFERPROC glad_glDrawBuffer = NULL;
+PFNGLDRAWBUFFERSPROC glad_glDrawBuffers = NULL;
+PFNGLDRAWELEMENTSPROC glad_glDrawElements = NULL;
+PFNGLDRAWELEMENTSBASEVERTEXPROC glad_glDrawElementsBaseVertex = NULL;
+PFNGLDRAWELEMENTSINSTANCEDPROC glad_glDrawElementsInstanced = NULL;
+PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC glad_glDrawElementsInstancedBaseVertex = NULL;
+PFNGLDRAWRANGEELEMENTSPROC glad_glDrawRangeElements = NULL;
+PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC glad_glDrawRangeElementsBaseVertex = NULL;
+PFNGLENABLEPROC glad_glEnable = NULL;
+PFNGLENABLEVERTEXATTRIBARRAYPROC glad_glEnableVertexAttribArray = NULL;
+PFNGLENABLEIPROC glad_glEnablei = NULL;
+PFNGLENDCONDITIONALRENDERPROC glad_glEndConditionalRender = NULL;
+PFNGLENDQUERYPROC glad_glEndQuery = NULL;
+PFNGLENDTRANSFORMFEEDBACKPROC glad_glEndTransformFeedback = NULL;
+PFNGLFENCESYNCPROC glad_glFenceSync = NULL;
+PFNGLFINISHPROC glad_glFinish = NULL;
+PFNGLFLUSHPROC glad_glFlush = NULL;
+PFNGLFLUSHMAPPEDBUFFERRANGEPROC glad_glFlushMappedBufferRange = NULL;
+PFNGLFRAMEBUFFERRENDERBUFFERPROC glad_glFramebufferRenderbuffer = NULL;
+PFNGLFRAMEBUFFERTEXTUREPROC glad_glFramebufferTexture = NULL;
+PFNGLFRAMEBUFFERTEXTURE1DPROC glad_glFramebufferTexture1D = NULL;
+PFNGLFRAMEBUFFERTEXTURE2DPROC glad_glFramebufferTexture2D = NULL;
+PFNGLFRAMEBUFFERTEXTURE3DPROC glad_glFramebufferTexture3D = NULL;
+PFNGLFRAMEBUFFERTEXTURELAYERPROC glad_glFramebufferTextureLayer = NULL;
+PFNGLFRONTFACEPROC glad_glFrontFace = NULL;
+PFNGLGENBUFFERSPROC glad_glGenBuffers = NULL;
+PFNGLGENFRAMEBUFFERSPROC glad_glGenFramebuffers = NULL;
+PFNGLGENQUERIESPROC glad_glGenQueries = NULL;
+PFNGLGENRENDERBUFFERSPROC glad_glGenRenderbuffers = NULL;
+PFNGLGENSAMPLERSPROC glad_glGenSamplers = NULL;
+PFNGLGENTEXTURESPROC glad_glGenTextures = NULL;
+PFNGLGENVERTEXARRAYSPROC glad_glGenVertexArrays = NULL;
+PFNGLGENERATEMIPMAPPROC glad_glGenerateMipmap = NULL;
+PFNGLGETACTIVEATTRIBPROC glad_glGetActiveAttrib = NULL;
+PFNGLGETACTIVEUNIFORMPROC glad_glGetActiveUniform = NULL;
+PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC glad_glGetActiveUniformBlockName = NULL;
+PFNGLGETACTIVEUNIFORMBLOCKIVPROC glad_glGetActiveUniformBlockiv = NULL;
+PFNGLGETACTIVEUNIFORMNAMEPROC glad_glGetActiveUniformName = NULL;
+PFNGLGETACTIVEUNIFORMSIVPROC glad_glGetActiveUniformsiv = NULL;
+PFNGLGETATTACHEDSHADERSPROC glad_glGetAttachedShaders = NULL;
+PFNGLGETATTRIBLOCATIONPROC glad_glGetAttribLocation = NULL;
+PFNGLGETBOOLEANI_VPROC glad_glGetBooleani_v = NULL;
+PFNGLGETBOOLEANVPROC glad_glGetBooleanv = NULL;
+PFNGLGETBUFFERPARAMETERI64VPROC glad_glGetBufferParameteri64v = NULL;
+PFNGLGETBUFFERPARAMETERIVPROC glad_glGetBufferParameteriv = NULL;
+PFNGLGETBUFFERPOINTERVPROC glad_glGetBufferPointerv = NULL;
+PFNGLGETBUFFERSUBDATAPROC glad_glGetBufferSubData = NULL;
+PFNGLGETCOMPRESSEDTEXIMAGEPROC glad_glGetCompressedTexImage = NULL;
+PFNGLGETDOUBLEVPROC glad_glGetDoublev = NULL;
+PFNGLGETERRORPROC glad_glGetError = NULL;
+PFNGLGETFLOATVPROC glad_glGetFloatv = NULL;
+PFNGLGETFRAGDATAINDEXPROC glad_glGetFragDataIndex = NULL;
+PFNGLGETFRAGDATALOCATIONPROC glad_glGetFragDataLocation = NULL;
+PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glad_glGetFramebufferAttachmentParameteriv = NULL;
+PFNGLGETINTEGER64I_VPROC glad_glGetInteger64i_v = NULL;
+PFNGLGETINTEGER64VPROC glad_glGetInteger64v = NULL;
+PFNGLGETINTEGERI_VPROC glad_glGetIntegeri_v = NULL;
+PFNGLGETINTEGERVPROC glad_glGetIntegerv = NULL;
+PFNGLGETMULTISAMPLEFVPROC glad_glGetMultisamplefv = NULL;
+PFNGLGETPROGRAMINFOLOGPROC glad_glGetProgramInfoLog = NULL;
+PFNGLGETPROGRAMIVPROC glad_glGetProgramiv = NULL;
+PFNGLGETQUERYOBJECTI64VPROC glad_glGetQueryObjecti64v = NULL;
+PFNGLGETQUERYOBJECTIVPROC glad_glGetQueryObjectiv = NULL;
+PFNGLGETQUERYOBJECTUI64VPROC glad_glGetQueryObjectui64v = NULL;
+PFNGLGETQUERYOBJECTUIVPROC glad_glGetQueryObjectuiv = NULL;
+PFNGLGETQUERYIVPROC glad_glGetQueryiv = NULL;
+PFNGLGETRENDERBUFFERPARAMETERIVPROC glad_glGetRenderbufferParameteriv = NULL;
+PFNGLGETSAMPLERPARAMETERIIVPROC glad_glGetSamplerParameterIiv = NULL;
+PFNGLGETSAMPLERPARAMETERIUIVPROC glad_glGetSamplerParameterIuiv = NULL;
+PFNGLGETSAMPLERPARAMETERFVPROC glad_glGetSamplerParameterfv = NULL;
+PFNGLGETSAMPLERPARAMETERIVPROC glad_glGetSamplerParameteriv = NULL;
+PFNGLGETSHADERINFOLOGPROC glad_glGetShaderInfoLog = NULL;
+PFNGLGETSHADERSOURCEPROC glad_glGetShaderSource = NULL;
+PFNGLGETSHADERIVPROC glad_glGetShaderiv = NULL;
+PFNGLGETSTRINGPROC glad_glGetString = NULL;
+PFNGLGETSTRINGIPROC glad_glGetStringi = NULL;
+PFNGLGETSYNCIVPROC glad_glGetSynciv = NULL;
+PFNGLGETTEXIMAGEPROC glad_glGetTexImage = NULL;
+PFNGLGETTEXLEVELPARAMETERFVPROC glad_glGetTexLevelParameterfv = NULL;
+PFNGLGETTEXLEVELPARAMETERIVPROC glad_glGetTexLevelParameteriv = NULL;
+PFNGLGETTEXPARAMETERIIVPROC glad_glGetTexParameterIiv = NULL;
+PFNGLGETTEXPARAMETERIUIVPROC glad_glGetTexParameterIuiv = NULL;
+PFNGLGETTEXPARAMETERFVPROC glad_glGetTexParameterfv = NULL;
+PFNGLGETTEXPARAMETERIVPROC glad_glGetTexParameteriv = NULL;
+PFNGLGETTRANSFORMFEEDBACKVARYINGPROC glad_glGetTransformFeedbackVarying = NULL;
+PFNGLGETUNIFORMBLOCKINDEXPROC glad_glGetUniformBlockIndex = NULL;
+PFNGLGETUNIFORMINDICESPROC glad_glGetUniformIndices = NULL;
+PFNGLGETUNIFORMLOCATIONPROC glad_glGetUniformLocation = NULL;
+PFNGLGETUNIFORMFVPROC glad_glGetUniformfv = NULL;
+PFNGLGETUNIFORMIVPROC glad_glGetUniformiv = NULL;
+PFNGLGETUNIFORMUIVPROC glad_glGetUniformuiv = NULL;
+PFNGLGETVERTEXATTRIBIIVPROC glad_glGetVertexAttribIiv = NULL;
+PFNGLGETVERTEXATTRIBIUIVPROC glad_glGetVertexAttribIuiv = NULL;
+PFNGLGETVERTEXATTRIBPOINTERVPROC glad_glGetVertexAttribPointerv = NULL;
+PFNGLGETVERTEXATTRIBDVPROC glad_glGetVertexAttribdv = NULL;
+PFNGLGETVERTEXATTRIBFVPROC glad_glGetVertexAttribfv = NULL;
+PFNGLGETVERTEXATTRIBIVPROC glad_glGetVertexAttribiv = NULL;
+PFNGLHINTPROC glad_glHint = NULL;
+PFNGLISBUFFERPROC glad_glIsBuffer = NULL;
+PFNGLISENABLEDPROC glad_glIsEnabled = NULL;
+PFNGLISENABLEDIPROC glad_glIsEnabledi = NULL;
+PFNGLISFRAMEBUFFERPROC glad_glIsFramebuffer = NULL;
+PFNGLISPROGRAMPROC glad_glIsProgram = NULL;
+PFNGLISQUERYPROC glad_glIsQuery = NULL;
+PFNGLISRENDERBUFFERPROC glad_glIsRenderbuffer = NULL;
+PFNGLISSAMPLERPROC glad_glIsSampler = NULL;
+PFNGLISSHADERPROC glad_glIsShader = NULL;
+PFNGLISSYNCPROC glad_glIsSync = NULL;
+PFNGLISTEXTUREPROC glad_glIsTexture = NULL;
+PFNGLISVERTEXARRAYPROC glad_glIsVertexArray = NULL;
+PFNGLLINEWIDTHPROC glad_glLineWidth = NULL;
+PFNGLLINKPROGRAMPROC glad_glLinkProgram = NULL;
+PFNGLLOGICOPPROC glad_glLogicOp = NULL;
+PFNGLMAPBUFFERPROC glad_glMapBuffer = NULL;
+PFNGLMAPBUFFERRANGEPROC glad_glMapBufferRange = NULL;
+PFNGLMULTIDRAWARRAYSPROC glad_glMultiDrawArrays = NULL;
+PFNGLMULTIDRAWELEMENTSPROC glad_glMultiDrawElements = NULL;
+PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC glad_glMultiDrawElementsBaseVertex = NULL;
+PFNGLPIXELSTOREFPROC glad_glPixelStoref = NULL;
+PFNGLPIXELSTOREIPROC glad_glPixelStorei = NULL;
+PFNGLPOINTPARAMETERFPROC glad_glPointParameterf = NULL;
+PFNGLPOINTPARAMETERFVPROC glad_glPointParameterfv = NULL;
+PFNGLPOINTPARAMETERIPROC glad_glPointParameteri = NULL;
+PFNGLPOINTPARAMETERIVPROC glad_glPointParameteriv = NULL;
+PFNGLPOINTSIZEPROC glad_glPointSize = NULL;
+PFNGLPOLYGONMODEPROC glad_glPolygonMode = NULL;
+PFNGLPOLYGONOFFSETPROC glad_glPolygonOffset = NULL;
+PFNGLPRIMITIVERESTARTINDEXPROC glad_glPrimitiveRestartIndex = NULL;
+PFNGLPROVOKINGVERTEXPROC glad_glProvokingVertex = NULL;
+PFNGLQUERYCOUNTERPROC glad_glQueryCounter = NULL;
+PFNGLREADBUFFERPROC glad_glReadBuffer = NULL;
+PFNGLREADPIXELSPROC glad_glReadPixels = NULL;
+PFNGLRENDERBUFFERSTORAGEPROC glad_glRenderbufferStorage = NULL;
+PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC glad_glRenderbufferStorageMultisample = NULL;
+PFNGLSAMPLECOVERAGEPROC glad_glSampleCoverage = NULL;
+PFNGLSAMPLEMASKIPROC glad_glSampleMaski = NULL;
+PFNGLSAMPLERPARAMETERIIVPROC glad_glSamplerParameterIiv = NULL;
+PFNGLSAMPLERPARAMETERIUIVPROC glad_glSamplerParameterIuiv = NULL;
+PFNGLSAMPLERPARAMETERFPROC glad_glSamplerParameterf = NULL;
+PFNGLSAMPLERPARAMETERFVPROC glad_glSamplerParameterfv = NULL;
+PFNGLSAMPLERPARAMETERIPROC glad_glSamplerParameteri = NULL;
+PFNGLSAMPLERPARAMETERIVPROC glad_glSamplerParameteriv = NULL;
+PFNGLSCISSORPROC glad_glScissor = NULL;
+PFNGLSHADERSOURCEPROC glad_glShaderSource = NULL;
+PFNGLSTENCILFUNCPROC glad_glStencilFunc = NULL;
+PFNGLSTENCILFUNCSEPARATEPROC glad_glStencilFuncSeparate = NULL;
+PFNGLSTENCILMASKPROC glad_glStencilMask = NULL;
+PFNGLSTENCILMASKSEPARATEPROC glad_glStencilMaskSeparate = NULL;
+PFNGLSTENCILOPPROC glad_glStencilOp = NULL;
+PFNGLSTENCILOPSEPARATEPROC glad_glStencilOpSeparate = NULL;
+PFNGLTEXBUFFERPROC glad_glTexBuffer = NULL;
+PFNGLTEXIMAGE1DPROC glad_glTexImage1D = NULL;
+PFNGLTEXIMAGE2DPROC glad_glTexImage2D = NULL;
+PFNGLTEXIMAGE2DMULTISAMPLEPROC glad_glTexImage2DMultisample = NULL;
+PFNGLTEXIMAGE3DPROC glad_glTexImage3D = NULL;
+PFNGLTEXIMAGE3DMULTISAMPLEPROC glad_glTexImage3DMultisample = NULL;
+PFNGLTEXPARAMETERIIVPROC glad_glTexParameterIiv = NULL;
+PFNGLTEXPARAMETERIUIVPROC glad_glTexParameterIuiv = NULL;
+PFNGLTEXPARAMETERFPROC glad_glTexParameterf = NULL;
+PFNGLTEXPARAMETERFVPROC glad_glTexParameterfv = NULL;
+PFNGLTEXPARAMETERIPROC glad_glTexParameteri = NULL;
+PFNGLTEXPARAMETERIVPROC glad_glTexParameteriv = NULL;
+PFNGLTEXSUBIMAGE1DPROC glad_glTexSubImage1D = NULL;
+PFNGLTEXSUBIMAGE2DPROC glad_glTexSubImage2D = NULL;
+PFNGLTEXSUBIMAGE3DPROC glad_glTexSubImage3D = NULL;
+PFNGLTRANSFORMFEEDBACKVARYINGSPROC glad_glTransformFeedbackVaryings = NULL;
+PFNGLUNIFORM1FPROC glad_glUniform1f = NULL;
+PFNGLUNIFORM1FVPROC glad_glUniform1fv = NULL;
+PFNGLUNIFORM1IPROC glad_glUniform1i = NULL;
+PFNGLUNIFORM1IVPROC glad_glUniform1iv = NULL;
+PFNGLUNIFORM1UIPROC glad_glUniform1ui = NULL;
+PFNGLUNIFORM1UIVPROC glad_glUniform1uiv = NULL;
+PFNGLUNIFORM2FPROC glad_glUniform2f = NULL;
+PFNGLUNIFORM2FVPROC glad_glUniform2fv = NULL;
+PFNGLUNIFORM2IPROC glad_glUniform2i = NULL;
+PFNGLUNIFORM2IVPROC glad_glUniform2iv = NULL;
+PFNGLUNIFORM2UIPROC glad_glUniform2ui = NULL;
+PFNGLUNIFORM2UIVPROC glad_glUniform2uiv = NULL;
+PFNGLUNIFORM3FPROC glad_glUniform3f = NULL;
+PFNGLUNIFORM3FVPROC glad_glUniform3fv = NULL;
+PFNGLUNIFORM3IPROC glad_glUniform3i = NULL;
+PFNGLUNIFORM3IVPROC glad_glUniform3iv = NULL;
+PFNGLUNIFORM3UIPROC glad_glUniform3ui = NULL;
+PFNGLUNIFORM3UIVPROC glad_glUniform3uiv = NULL;
+PFNGLUNIFORM4FPROC glad_glUniform4f = NULL;
+PFNGLUNIFORM4FVPROC glad_glUniform4fv = NULL;
+PFNGLUNIFORM4IPROC glad_glUniform4i = NULL;
+PFNGLUNIFORM4IVPROC glad_glUniform4iv = NULL;
+PFNGLUNIFORM4UIPROC glad_glUniform4ui = NULL;
+PFNGLUNIFORM4UIVPROC glad_glUniform4uiv = NULL;
+PFNGLUNIFORMBLOCKBINDINGPROC glad_glUniformBlockBinding = NULL;
+PFNGLUNIFORMMATRIX2FVPROC glad_glUniformMatrix2fv = NULL;
+PFNGLUNIFORMMATRIX2X3FVPROC glad_glUniformMatrix2x3fv = NULL;
+PFNGLUNIFORMMATRIX2X4FVPROC glad_glUniformMatrix2x4fv = NULL;
+PFNGLUNIFORMMATRIX3FVPROC glad_glUniformMatrix3fv = NULL;
+PFNGLUNIFORMMATRIX3X2FVPROC glad_glUniformMatrix3x2fv = NULL;
+PFNGLUNIFORMMATRIX3X4FVPROC glad_glUniformMatrix3x4fv = NULL;
+PFNGLUNIFORMMATRIX4FVPROC glad_glUniformMatrix4fv = NULL;
+PFNGLUNIFORMMATRIX4X2FVPROC glad_glUniformMatrix4x2fv = NULL;
+PFNGLUNIFORMMATRIX4X3FVPROC glad_glUniformMatrix4x3fv = NULL;
+PFNGLUNMAPBUFFERPROC glad_glUnmapBuffer = NULL;
+PFNGLUSEPROGRAMPROC glad_glUseProgram = NULL;
+PFNGLVALIDATEPROGRAMPROC glad_glValidateProgram = NULL;
+PFNGLVERTEXATTRIB1DPROC glad_glVertexAttrib1d = NULL;
+PFNGLVERTEXATTRIB1DVPROC glad_glVertexAttrib1dv = NULL;
+PFNGLVERTEXATTRIB1FPROC glad_glVertexAttrib1f = NULL;
+PFNGLVERTEXATTRIB1FVPROC glad_glVertexAttrib1fv = NULL;
+PFNGLVERTEXATTRIB1SPROC glad_glVertexAttrib1s = NULL;
+PFNGLVERTEXATTRIB1SVPROC glad_glVertexAttrib1sv = NULL;
+PFNGLVERTEXATTRIB2DPROC glad_glVertexAttrib2d = NULL;
+PFNGLVERTEXATTRIB2DVPROC glad_glVertexAttrib2dv = NULL;
+PFNGLVERTEXATTRIB2FPROC glad_glVertexAttrib2f = NULL;
+PFNGLVERTEXATTRIB2FVPROC glad_glVertexAttrib2fv = NULL;
+PFNGLVERTEXATTRIB2SPROC glad_glVertexAttrib2s = NULL;
+PFNGLVERTEXATTRIB2SVPROC glad_glVertexAttrib2sv = NULL;
+PFNGLVERTEXATTRIB3DPROC glad_glVertexAttrib3d = NULL;
+PFNGLVERTEXATTRIB3DVPROC glad_glVertexAttrib3dv = NULL;
+PFNGLVERTEXATTRIB3FPROC glad_glVertexAttrib3f = NULL;
+PFNGLVERTEXATTRIB3FVPROC glad_glVertexAttrib3fv = NULL;
+PFNGLVERTEXATTRIB3SPROC glad_glVertexAttrib3s = NULL;
+PFNGLVERTEXATTRIB3SVPROC glad_glVertexAttrib3sv = NULL;
+PFNGLVERTEXATTRIB4NBVPROC glad_glVertexAttrib4Nbv = NULL;
+PFNGLVERTEXATTRIB4NIVPROC glad_glVertexAttrib4Niv = NULL;
+PFNGLVERTEXATTRIB4NSVPROC glad_glVertexAttrib4Nsv = NULL;
+PFNGLVERTEXATTRIB4NUBPROC glad_glVertexAttrib4Nub = NULL;
+PFNGLVERTEXATTRIB4NUBVPROC glad_glVertexAttrib4Nubv = NULL;
+PFNGLVERTEXATTRIB4NUIVPROC glad_glVertexAttrib4Nuiv = NULL;
+PFNGLVERTEXATTRIB4NUSVPROC glad_glVertexAttrib4Nusv = NULL;
+PFNGLVERTEXATTRIB4BVPROC glad_glVertexAttrib4bv = NULL;
+PFNGLVERTEXATTRIB4DPROC glad_glVertexAttrib4d = NULL;
+PFNGLVERTEXATTRIB4DVPROC glad_glVertexAttrib4dv = NULL;
+PFNGLVERTEXATTRIB4FPROC glad_glVertexAttrib4f = NULL;
+PFNGLVERTEXATTRIB4FVPROC glad_glVertexAttrib4fv = NULL;
+PFNGLVERTEXATTRIB4IVPROC glad_glVertexAttrib4iv = NULL;
+PFNGLVERTEXATTRIB4SPROC glad_glVertexAttrib4s = NULL;
+PFNGLVERTEXATTRIB4SVPROC glad_glVertexAttrib4sv = NULL;
+PFNGLVERTEXATTRIB4UBVPROC glad_glVertexAttrib4ubv = NULL;
+PFNGLVERTEXATTRIB4UIVPROC glad_glVertexAttrib4uiv = NULL;
+PFNGLVERTEXATTRIB4USVPROC glad_glVertexAttrib4usv = NULL;
+PFNGLVERTEXATTRIBDIVISORPROC glad_glVertexAttribDivisor = NULL;
+PFNGLVERTEXATTRIBI1IPROC glad_glVertexAttribI1i = NULL;
+PFNGLVERTEXATTRIBI1IVPROC glad_glVertexAttribI1iv = NULL;
+PFNGLVERTEXATTRIBI1UIPROC glad_glVertexAttribI1ui = NULL;
+PFNGLVERTEXATTRIBI1UIVPROC glad_glVertexAttribI1uiv = NULL;
+PFNGLVERTEXATTRIBI2IPROC glad_glVertexAttribI2i = NULL;
+PFNGLVERTEXATTRIBI2IVPROC glad_glVertexAttribI2iv = NULL;
+PFNGLVERTEXATTRIBI2UIPROC glad_glVertexAttribI2ui = NULL;
+PFNGLVERTEXATTRIBI2UIVPROC glad_glVertexAttribI2uiv = NULL;
+PFNGLVERTEXATTRIBI3IPROC glad_glVertexAttribI3i = NULL;
+PFNGLVERTEXATTRIBI3IVPROC glad_glVertexAttribI3iv = NULL;
+PFNGLVERTEXATTRIBI3UIPROC glad_glVertexAttribI3ui = NULL;
+PFNGLVERTEXATTRIBI3UIVPROC glad_glVertexAttribI3uiv = NULL;
+PFNGLVERTEXATTRIBI4BVPROC glad_glVertexAttribI4bv = NULL;
+PFNGLVERTEXATTRIBI4IPROC glad_glVertexAttribI4i = NULL;
+PFNGLVERTEXATTRIBI4IVPROC glad_glVertexAttribI4iv = NULL;
+PFNGLVERTEXATTRIBI4SVPROC glad_glVertexAttribI4sv = NULL;
+PFNGLVERTEXATTRIBI4UBVPROC glad_glVertexAttribI4ubv = NULL;
+PFNGLVERTEXATTRIBI4UIPROC glad_glVertexAttribI4ui = NULL;
+PFNGLVERTEXATTRIBI4UIVPROC glad_glVertexAttribI4uiv = NULL;
+PFNGLVERTEXATTRIBI4USVPROC glad_glVertexAttribI4usv = NULL;
+PFNGLVERTEXATTRIBIPOINTERPROC glad_glVertexAttribIPointer = NULL;
+PFNGLVERTEXATTRIBP1UIPROC glad_glVertexAttribP1ui = NULL;
+PFNGLVERTEXATTRIBP1UIVPROC glad_glVertexAttribP1uiv = NULL;
+PFNGLVERTEXATTRIBP2UIPROC glad_glVertexAttribP2ui = NULL;
+PFNGLVERTEXATTRIBP2UIVPROC glad_glVertexAttribP2uiv = NULL;
+PFNGLVERTEXATTRIBP3UIPROC glad_glVertexAttribP3ui = NULL;
+PFNGLVERTEXATTRIBP3UIVPROC glad_glVertexAttribP3uiv = NULL;
+PFNGLVERTEXATTRIBP4UIPROC glad_glVertexAttribP4ui = NULL;
+PFNGLVERTEXATTRIBP4UIVPROC glad_glVertexAttribP4uiv = NULL;
+PFNGLVERTEXATTRIBPOINTERPROC glad_glVertexAttribPointer = NULL;
+PFNGLVIEWPORTPROC glad_glViewport = NULL;
+PFNGLWAITSYNCPROC glad_glWaitSync = NULL;
+
+
+static void glad_gl_load_GL_VERSION_1_0( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_1_0) return;
+    glad_glBlendFunc = (PFNGLBLENDFUNCPROC) load(userptr, "glBlendFunc");
+    glad_glClear = (PFNGLCLEARPROC) load(userptr, "glClear");
+    glad_glClearColor = (PFNGLCLEARCOLORPROC) load(userptr, "glClearColor");
+    glad_glClearDepth = (PFNGLCLEARDEPTHPROC) load(userptr, "glClearDepth");
+    glad_glClearStencil = (PFNGLCLEARSTENCILPROC) load(userptr, "glClearStencil");
+    glad_glColorMask = (PFNGLCOLORMASKPROC) load(userptr, "glColorMask");
+    glad_glCullFace = (PFNGLCULLFACEPROC) load(userptr, "glCullFace");
+    glad_glDepthFunc = (PFNGLDEPTHFUNCPROC) load(userptr, "glDepthFunc");
+    glad_glDepthMask = (PFNGLDEPTHMASKPROC) load(userptr, "glDepthMask");
+    glad_glDepthRange = (PFNGLDEPTHRANGEPROC) load(userptr, "glDepthRange");
+    glad_glDisable = (PFNGLDISABLEPROC) load(userptr, "glDisable");
+    glad_glDrawBuffer = (PFNGLDRAWBUFFERPROC) load(userptr, "glDrawBuffer");
+    glad_glEnable = (PFNGLENABLEPROC) load(userptr, "glEnable");
+    glad_glFinish = (PFNGLFINISHPROC) load(userptr, "glFinish");
+    glad_glFlush = (PFNGLFLUSHPROC) load(userptr, "glFlush");
+    glad_glFrontFace = (PFNGLFRONTFACEPROC) load(userptr, "glFrontFace");
+    glad_glGetBooleanv = (PFNGLGETBOOLEANVPROC) load(userptr, "glGetBooleanv");
+    glad_glGetDoublev = (PFNGLGETDOUBLEVPROC) load(userptr, "glGetDoublev");
+    glad_glGetError = (PFNGLGETERRORPROC) load(userptr, "glGetError");
+    glad_glGetFloatv = (PFNGLGETFLOATVPROC) load(userptr, "glGetFloatv");
+    glad_glGetIntegerv = (PFNGLGETINTEGERVPROC) load(userptr, "glGetIntegerv");
+    glad_glGetString = (PFNGLGETSTRINGPROC) load(userptr, "glGetString");
+    glad_glGetTexImage = (PFNGLGETTEXIMAGEPROC) load(userptr, "glGetTexImage");
+    glad_glGetTexLevelParameterfv = (PFNGLGETTEXLEVELPARAMETERFVPROC) load(userptr, "glGetTexLevelParameterfv");
+    glad_glGetTexLevelParameteriv = (PFNGLGETTEXLEVELPARAMETERIVPROC) load(userptr, "glGetTexLevelParameteriv");
+    glad_glGetTexParameterfv = (PFNGLGETTEXPARAMETERFVPROC) load(userptr, "glGetTexParameterfv");
+    glad_glGetTexParameteriv = (PFNGLGETTEXPARAMETERIVPROC) load(userptr, "glGetTexParameteriv");
+    glad_glHint = (PFNGLHINTPROC) load(userptr, "glHint");
+    glad_glIsEnabled = (PFNGLISENABLEDPROC) load(userptr, "glIsEnabled");
+    glad_glLineWidth = (PFNGLLINEWIDTHPROC) load(userptr, "glLineWidth");
+    glad_glLogicOp = (PFNGLLOGICOPPROC) load(userptr, "glLogicOp");
+    glad_glPixelStoref = (PFNGLPIXELSTOREFPROC) load(userptr, "glPixelStoref");
+    glad_glPixelStorei = (PFNGLPIXELSTOREIPROC) load(userptr, "glPixelStorei");
+    glad_glPointSize = (PFNGLPOINTSIZEPROC) load(userptr, "glPointSize");
+    glad_glPolygonMode = (PFNGLPOLYGONMODEPROC) load(userptr, "glPolygonMode");
+    glad_glReadBuffer = (PFNGLREADBUFFERPROC) load(userptr, "glReadBuffer");
+    glad_glReadPixels = (PFNGLREADPIXELSPROC) load(userptr, "glReadPixels");
+    glad_glScissor = (PFNGLSCISSORPROC) load(userptr, "glScissor");
+    glad_glStencilFunc = (PFNGLSTENCILFUNCPROC) load(userptr, "glStencilFunc");
+    glad_glStencilMask = (PFNGLSTENCILMASKPROC) load(userptr, "glStencilMask");
+    glad_glStencilOp = (PFNGLSTENCILOPPROC) load(userptr, "glStencilOp");
+    glad_glTexImage1D = (PFNGLTEXIMAGE1DPROC) load(userptr, "glTexImage1D");
+    glad_glTexImage2D = (PFNGLTEXIMAGE2DPROC) load(userptr, "glTexImage2D");
+    glad_glTexParameterf = (PFNGLTEXPARAMETERFPROC) load(userptr, "glTexParameterf");
+    glad_glTexParameterfv = (PFNGLTEXPARAMETERFVPROC) load(userptr, "glTexParameterfv");
+    glad_glTexParameteri = (PFNGLTEXPARAMETERIPROC) load(userptr, "glTexParameteri");
+    glad_glTexParameteriv = (PFNGLTEXPARAMETERIVPROC) load(userptr, "glTexParameteriv");
+    glad_glViewport = (PFNGLVIEWPORTPROC) load(userptr, "glViewport");
+}
+static void glad_gl_load_GL_VERSION_1_1( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_1_1) return;
+    glad_glBindTexture = (PFNGLBINDTEXTUREPROC) load(userptr, "glBindTexture");
+    glad_glCopyTexImage1D = (PFNGLCOPYTEXIMAGE1DPROC) load(userptr, "glCopyTexImage1D");
+    glad_glCopyTexImage2D = (PFNGLCOPYTEXIMAGE2DPROC) load(userptr, "glCopyTexImage2D");
+    glad_glCopyTexSubImage1D = (PFNGLCOPYTEXSUBIMAGE1DPROC) load(userptr, "glCopyTexSubImage1D");
+    glad_glCopyTexSubImage2D = (PFNGLCOPYTEXSUBIMAGE2DPROC) load(userptr, "glCopyTexSubImage2D");
+    glad_glDeleteTextures = (PFNGLDELETETEXTURESPROC) load(userptr, "glDeleteTextures");
+    glad_glDrawArrays = (PFNGLDRAWARRAYSPROC) load(userptr, "glDrawArrays");
+    glad_glDrawElements = (PFNGLDRAWELEMENTSPROC) load(userptr, "glDrawElements");
+    glad_glGenTextures = (PFNGLGENTEXTURESPROC) load(userptr, "glGenTextures");
+    glad_glIsTexture = (PFNGLISTEXTUREPROC) load(userptr, "glIsTexture");
+    glad_glPolygonOffset = (PFNGLPOLYGONOFFSETPROC) load(userptr, "glPolygonOffset");
+    glad_glTexSubImage1D = (PFNGLTEXSUBIMAGE1DPROC) load(userptr, "glTexSubImage1D");
+    glad_glTexSubImage2D = (PFNGLTEXSUBIMAGE2DPROC) load(userptr, "glTexSubImage2D");
+}
+static void glad_gl_load_GL_VERSION_1_2( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_1_2) return;
+    glad_glCopyTexSubImage3D = (PFNGLCOPYTEXSUBIMAGE3DPROC) load(userptr, "glCopyTexSubImage3D");
+    glad_glDrawRangeElements = (PFNGLDRAWRANGEELEMENTSPROC) load(userptr, "glDrawRangeElements");
+    glad_glTexImage3D = (PFNGLTEXIMAGE3DPROC) load(userptr, "glTexImage3D");
+    glad_glTexSubImage3D = (PFNGLTEXSUBIMAGE3DPROC) load(userptr, "glTexSubImage3D");
+}
+static void glad_gl_load_GL_VERSION_1_3( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_1_3) return;
+    glad_glActiveTexture = (PFNGLACTIVETEXTUREPROC) load(userptr, "glActiveTexture");
+    glad_glCompressedTexImage1D = (PFNGLCOMPRESSEDTEXIMAGE1DPROC) load(userptr, "glCompressedTexImage1D");
+    glad_glCompressedTexImage2D = (PFNGLCOMPRESSEDTEXIMAGE2DPROC) load(userptr, "glCompressedTexImage2D");
+    glad_glCompressedTexImage3D = (PFNGLCOMPRESSEDTEXIMAGE3DPROC) load(userptr, "glCompressedTexImage3D");
+    glad_glCompressedTexSubImage1D = (PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC) load(userptr, "glCompressedTexSubImage1D");
+    glad_glCompressedTexSubImage2D = (PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC) load(userptr, "glCompressedTexSubImage2D");
+    glad_glCompressedTexSubImage3D = (PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC) load(userptr, "glCompressedTexSubImage3D");
+    glad_glGetCompressedTexImage = (PFNGLGETCOMPRESSEDTEXIMAGEPROC) load(userptr, "glGetCompressedTexImage");
+    glad_glSampleCoverage = (PFNGLSAMPLECOVERAGEPROC) load(userptr, "glSampleCoverage");
+}
+static void glad_gl_load_GL_VERSION_1_4( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_1_4) return;
+    glad_glBlendColor = (PFNGLBLENDCOLORPROC) load(userptr, "glBlendColor");
+    glad_glBlendEquation = (PFNGLBLENDEQUATIONPROC) load(userptr, "glBlendEquation");
+    glad_glBlendFuncSeparate = (PFNGLBLENDFUNCSEPARATEPROC) load(userptr, "glBlendFuncSeparate");
+    glad_glMultiDrawArrays = (PFNGLMULTIDRAWARRAYSPROC) load(userptr, "glMultiDrawArrays");
+    glad_glMultiDrawElements = (PFNGLMULTIDRAWELEMENTSPROC) load(userptr, "glMultiDrawElements");
+    glad_glPointParameterf = (PFNGLPOINTPARAMETERFPROC) load(userptr, "glPointParameterf");
+    glad_glPointParameterfv = (PFNGLPOINTPARAMETERFVPROC) load(userptr, "glPointParameterfv");
+    glad_glPointParameteri = (PFNGLPOINTPARAMETERIPROC) load(userptr, "glPointParameteri");
+    glad_glPointParameteriv = (PFNGLPOINTPARAMETERIVPROC) load(userptr, "glPointParameteriv");
+}
+static void glad_gl_load_GL_VERSION_1_5( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_1_5) return;
+    glad_glBeginQuery = (PFNGLBEGINQUERYPROC) load(userptr, "glBeginQuery");
+    glad_glBindBuffer = (PFNGLBINDBUFFERPROC) load(userptr, "glBindBuffer");
+    glad_glBufferData = (PFNGLBUFFERDATAPROC) load(userptr, "glBufferData");
+    glad_glBufferSubData = (PFNGLBUFFERSUBDATAPROC) load(userptr, "glBufferSubData");
+    glad_glDeleteBuffers = (PFNGLDELETEBUFFERSPROC) load(userptr, "glDeleteBuffers");
+    glad_glDeleteQueries = (PFNGLDELETEQUERIESPROC) load(userptr, "glDeleteQueries");
+    glad_glEndQuery = (PFNGLENDQUERYPROC) load(userptr, "glEndQuery");
+    glad_glGenBuffers = (PFNGLGENBUFFERSPROC) load(userptr, "glGenBuffers");
+    glad_glGenQueries = (PFNGLGENQUERIESPROC) load(userptr, "glGenQueries");
+    glad_glGetBufferParameteriv = (PFNGLGETBUFFERPARAMETERIVPROC) load(userptr, "glGetBufferParameteriv");
+    glad_glGetBufferPointerv = (PFNGLGETBUFFERPOINTERVPROC) load(userptr, "glGetBufferPointerv");
+    glad_glGetBufferSubData = (PFNGLGETBUFFERSUBDATAPROC) load(userptr, "glGetBufferSubData");
+    glad_glGetQueryObjectiv = (PFNGLGETQUERYOBJECTIVPROC) load(userptr, "glGetQueryObjectiv");
+    glad_glGetQueryObjectuiv = (PFNGLGETQUERYOBJECTUIVPROC) load(userptr, "glGetQueryObjectuiv");
+    glad_glGetQueryiv = (PFNGLGETQUERYIVPROC) load(userptr, "glGetQueryiv");
+    glad_glIsBuffer = (PFNGLISBUFFERPROC) load(userptr, "glIsBuffer");
+    glad_glIsQuery = (PFNGLISQUERYPROC) load(userptr, "glIsQuery");
+    glad_glMapBuffer = (PFNGLMAPBUFFERPROC) load(userptr, "glMapBuffer");
+    glad_glUnmapBuffer = (PFNGLUNMAPBUFFERPROC) load(userptr, "glUnmapBuffer");
+}
+static void glad_gl_load_GL_VERSION_2_0( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_2_0) return;
+    glad_glAttachShader = (PFNGLATTACHSHADERPROC) load(userptr, "glAttachShader");
+    glad_glBindAttribLocation = (PFNGLBINDATTRIBLOCATIONPROC) load(userptr, "glBindAttribLocation");
+    glad_glBlendEquationSeparate = (PFNGLBLENDEQUATIONSEPARATEPROC) load(userptr, "glBlendEquationSeparate");
+    glad_glCompileShader = (PFNGLCOMPILESHADERPROC) load(userptr, "glCompileShader");
+    glad_glCreateProgram = (PFNGLCREATEPROGRAMPROC) load(userptr, "glCreateProgram");
+    glad_glCreateShader = (PFNGLCREATESHADERPROC) load(userptr, "glCreateShader");
+    glad_glDeleteProgram = (PFNGLDELETEPROGRAMPROC) load(userptr, "glDeleteProgram");
+    glad_glDeleteShader = (PFNGLDELETESHADERPROC) load(userptr, "glDeleteShader");
+    glad_glDetachShader = (PFNGLDETACHSHADERPROC) load(userptr, "glDetachShader");
+    glad_glDisableVertexAttribArray = (PFNGLDISABLEVERTEXATTRIBARRAYPROC) load(userptr, "glDisableVertexAttribArray");
+    glad_glDrawBuffers = (PFNGLDRAWBUFFERSPROC) load(userptr, "glDrawBuffers");
+    glad_glEnableVertexAttribArray = (PFNGLENABLEVERTEXATTRIBARRAYPROC) load(userptr, "glEnableVertexAttribArray");
+    glad_glGetActiveAttrib = (PFNGLGETACTIVEATTRIBPROC) load(userptr, "glGetActiveAttrib");
+    glad_glGetActiveUniform = (PFNGLGETACTIVEUNIFORMPROC) load(userptr, "glGetActiveUniform");
+    glad_glGetAttachedShaders = (PFNGLGETATTACHEDSHADERSPROC) load(userptr, "glGetAttachedShaders");
+    glad_glGetAttribLocation = (PFNGLGETATTRIBLOCATIONPROC) load(userptr, "glGetAttribLocation");
+    glad_glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) load(userptr, "glGetProgramInfoLog");
+    glad_glGetProgramiv = (PFNGLGETPROGRAMIVPROC) load(userptr, "glGetProgramiv");
+    glad_glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) load(userptr, "glGetShaderInfoLog");
+    glad_glGetShaderSource = (PFNGLGETSHADERSOURCEPROC) load(userptr, "glGetShaderSource");
+    glad_glGetShaderiv = (PFNGLGETSHADERIVPROC) load(userptr, "glGetShaderiv");
+    glad_glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) load(userptr, "glGetUniformLocation");
+    glad_glGetUniformfv = (PFNGLGETUNIFORMFVPROC) load(userptr, "glGetUniformfv");
+    glad_glGetUniformiv = (PFNGLGETUNIFORMIVPROC) load(userptr, "glGetUniformiv");
+    glad_glGetVertexAttribPointerv = (PFNGLGETVERTEXATTRIBPOINTERVPROC) load(userptr, "glGetVertexAttribPointerv");
+    glad_glGetVertexAttribdv = (PFNGLGETVERTEXATTRIBDVPROC) load(userptr, "glGetVertexAttribdv");
+    glad_glGetVertexAttribfv = (PFNGLGETVERTEXATTRIBFVPROC) load(userptr, "glGetVertexAttribfv");
+    glad_glGetVertexAttribiv = (PFNGLGETVERTEXATTRIBIVPROC) load(userptr, "glGetVertexAttribiv");
+    glad_glIsProgram = (PFNGLISPROGRAMPROC) load(userptr, "glIsProgram");
+    glad_glIsShader = (PFNGLISSHADERPROC) load(userptr, "glIsShader");
+    glad_glLinkProgram = (PFNGLLINKPROGRAMPROC) load(userptr, "glLinkProgram");
+    glad_glShaderSource = (PFNGLSHADERSOURCEPROC) load(userptr, "glShaderSource");
+    glad_glStencilFuncSeparate = (PFNGLSTENCILFUNCSEPARATEPROC) load(userptr, "glStencilFuncSeparate");
+    glad_glStencilMaskSeparate = (PFNGLSTENCILMASKSEPARATEPROC) load(userptr, "glStencilMaskSeparate");
+    glad_glStencilOpSeparate = (PFNGLSTENCILOPSEPARATEPROC) load(userptr, "glStencilOpSeparate");
+    glad_glUniform1f = (PFNGLUNIFORM1FPROC) load(userptr, "glUniform1f");
+    glad_glUniform1fv = (PFNGLUNIFORM1FVPROC) load(userptr, "glUniform1fv");
+    glad_glUniform1i = (PFNGLUNIFORM1IPROC) load(userptr, "glUniform1i");
+    glad_glUniform1iv = (PFNGLUNIFORM1IVPROC) load(userptr, "glUniform1iv");
+    glad_glUniform2f = (PFNGLUNIFORM2FPROC) load(userptr, "glUniform2f");
+    glad_glUniform2fv = (PFNGLUNIFORM2FVPROC) load(userptr, "glUniform2fv");
+    glad_glUniform2i = (PFNGLUNIFORM2IPROC) load(userptr, "glUniform2i");
+    glad_glUniform2iv = (PFNGLUNIFORM2IVPROC) load(userptr, "glUniform2iv");
+    glad_glUniform3f = (PFNGLUNIFORM3FPROC) load(userptr, "glUniform3f");
+    glad_glUniform3fv = (PFNGLUNIFORM3FVPROC) load(userptr, "glUniform3fv");
+    glad_glUniform3i = (PFNGLUNIFORM3IPROC) load(userptr, "glUniform3i");
+    glad_glUniform3iv = (PFNGLUNIFORM3IVPROC) load(userptr, "glUniform3iv");
+    glad_glUniform4f = (PFNGLUNIFORM4FPROC) load(userptr, "glUniform4f");
+    glad_glUniform4fv = (PFNGLUNIFORM4FVPROC) load(userptr, "glUniform4fv");
+    glad_glUniform4i = (PFNGLUNIFORM4IPROC) load(userptr, "glUniform4i");
+    glad_glUniform4iv = (PFNGLUNIFORM4IVPROC) load(userptr, "glUniform4iv");
+    glad_glUniformMatrix2fv = (PFNGLUNIFORMMATRIX2FVPROC) load(userptr, "glUniformMatrix2fv");
+    glad_glUniformMatrix3fv = (PFNGLUNIFORMMATRIX3FVPROC) load(userptr, "glUniformMatrix3fv");
+    glad_glUniformMatrix4fv = (PFNGLUNIFORMMATRIX4FVPROC) load(userptr, "glUniformMatrix4fv");
+    glad_glUseProgram = (PFNGLUSEPROGRAMPROC) load(userptr, "glUseProgram");
+    glad_glValidateProgram = (PFNGLVALIDATEPROGRAMPROC) load(userptr, "glValidateProgram");
+    glad_glVertexAttrib1d = (PFNGLVERTEXATTRIB1DPROC) load(userptr, "glVertexAttrib1d");
+    glad_glVertexAttrib1dv = (PFNGLVERTEXATTRIB1DVPROC) load(userptr, "glVertexAttrib1dv");
+    glad_glVertexAttrib1f = (PFNGLVERTEXATTRIB1FPROC) load(userptr, "glVertexAttrib1f");
+    glad_glVertexAttrib1fv = (PFNGLVERTEXATTRIB1FVPROC) load(userptr, "glVertexAttrib1fv");
+    glad_glVertexAttrib1s = (PFNGLVERTEXATTRIB1SPROC) load(userptr, "glVertexAttrib1s");
+    glad_glVertexAttrib1sv = (PFNGLVERTEXATTRIB1SVPROC) load(userptr, "glVertexAttrib1sv");
+    glad_glVertexAttrib2d = (PFNGLVERTEXATTRIB2DPROC) load(userptr, "glVertexAttrib2d");
+    glad_glVertexAttrib2dv = (PFNGLVERTEXATTRIB2DVPROC) load(userptr, "glVertexAttrib2dv");
+    glad_glVertexAttrib2f = (PFNGLVERTEXATTRIB2FPROC) load(userptr, "glVertexAttrib2f");
+    glad_glVertexAttrib2fv = (PFNGLVERTEXATTRIB2FVPROC) load(userptr, "glVertexAttrib2fv");
+    glad_glVertexAttrib2s = (PFNGLVERTEXATTRIB2SPROC) load(userptr, "glVertexAttrib2s");
+    glad_glVertexAttrib2sv = (PFNGLVERTEXATTRIB2SVPROC) load(userptr, "glVertexAttrib2sv");
+    glad_glVertexAttrib3d = (PFNGLVERTEXATTRIB3DPROC) load(userptr, "glVertexAttrib3d");
+    glad_glVertexAttrib3dv = (PFNGLVERTEXATTRIB3DVPROC) load(userptr, "glVertexAttrib3dv");
+    glad_glVertexAttrib3f = (PFNGLVERTEXATTRIB3FPROC) load(userptr, "glVertexAttrib3f");
+    glad_glVertexAttrib3fv = (PFNGLVERTEXATTRIB3FVPROC) load(userptr, "glVertexAttrib3fv");
+    glad_glVertexAttrib3s = (PFNGLVERTEXATTRIB3SPROC) load(userptr, "glVertexAttrib3s");
+    glad_glVertexAttrib3sv = (PFNGLVERTEXATTRIB3SVPROC) load(userptr, "glVertexAttrib3sv");
+    glad_glVertexAttrib4Nbv = (PFNGLVERTEXATTRIB4NBVPROC) load(userptr, "glVertexAttrib4Nbv");
+    glad_glVertexAttrib4Niv = (PFNGLVERTEXATTRIB4NIVPROC) load(userptr, "glVertexAttrib4Niv");
+    glad_glVertexAttrib4Nsv = (PFNGLVERTEXATTRIB4NSVPROC) load(userptr, "glVertexAttrib4Nsv");
+    glad_glVertexAttrib4Nub = (PFNGLVERTEXATTRIB4NUBPROC) load(userptr, "glVertexAttrib4Nub");
+    glad_glVertexAttrib4Nubv = (PFNGLVERTEXATTRIB4NUBVPROC) load(userptr, "glVertexAttrib4Nubv");
+    glad_glVertexAttrib4Nuiv = (PFNGLVERTEXATTRIB4NUIVPROC) load(userptr, "glVertexAttrib4Nuiv");
+    glad_glVertexAttrib4Nusv = (PFNGLVERTEXATTRIB4NUSVPROC) load(userptr, "glVertexAttrib4Nusv");
+    glad_glVertexAttrib4bv = (PFNGLVERTEXATTRIB4BVPROC) load(userptr, "glVertexAttrib4bv");
+    glad_glVertexAttrib4d = (PFNGLVERTEXATTRIB4DPROC) load(userptr, "glVertexAttrib4d");
+    glad_glVertexAttrib4dv = (PFNGLVERTEXATTRIB4DVPROC) load(userptr, "glVertexAttrib4dv");
+    glad_glVertexAttrib4f = (PFNGLVERTEXATTRIB4FPROC) load(userptr, "glVertexAttrib4f");
+    glad_glVertexAttrib4fv = (PFNGLVERTEXATTRIB4FVPROC) load(userptr, "glVertexAttrib4fv");
+    glad_glVertexAttrib4iv = (PFNGLVERTEXATTRIB4IVPROC) load(userptr, "glVertexAttrib4iv");
+    glad_glVertexAttrib4s = (PFNGLVERTEXATTRIB4SPROC) load(userptr, "glVertexAttrib4s");
+    glad_glVertexAttrib4sv = (PFNGLVERTEXATTRIB4SVPROC) load(userptr, "glVertexAttrib4sv");
+    glad_glVertexAttrib4ubv = (PFNGLVERTEXATTRIB4UBVPROC) load(userptr, "glVertexAttrib4ubv");
+    glad_glVertexAttrib4uiv = (PFNGLVERTEXATTRIB4UIVPROC) load(userptr, "glVertexAttrib4uiv");
+    glad_glVertexAttrib4usv = (PFNGLVERTEXATTRIB4USVPROC) load(userptr, "glVertexAttrib4usv");
+    glad_glVertexAttribPointer = (PFNGLVERTEXATTRIBPOINTERPROC) load(userptr, "glVertexAttribPointer");
+}
+static void glad_gl_load_GL_VERSION_2_1( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_2_1) return;
+    glad_glUniformMatrix2x3fv = (PFNGLUNIFORMMATRIX2X3FVPROC) load(userptr, "glUniformMatrix2x3fv");
+    glad_glUniformMatrix2x4fv = (PFNGLUNIFORMMATRIX2X4FVPROC) load(userptr, "glUniformMatrix2x4fv");
+    glad_glUniformMatrix3x2fv = (PFNGLUNIFORMMATRIX3X2FVPROC) load(userptr, "glUniformMatrix3x2fv");
+    glad_glUniformMatrix3x4fv = (PFNGLUNIFORMMATRIX3X4FVPROC) load(userptr, "glUniformMatrix3x4fv");
+    glad_glUniformMatrix4x2fv = (PFNGLUNIFORMMATRIX4X2FVPROC) load(userptr, "glUniformMatrix4x2fv");
+    glad_glUniformMatrix4x3fv = (PFNGLUNIFORMMATRIX4X3FVPROC) load(userptr, "glUniformMatrix4x3fv");
+}
+static void glad_gl_load_GL_VERSION_3_0( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_3_0) return;
+    glad_glBeginConditionalRender = (PFNGLBEGINCONDITIONALRENDERPROC) load(userptr, "glBeginConditionalRender");
+    glad_glBeginTransformFeedback = (PFNGLBEGINTRANSFORMFEEDBACKPROC) load(userptr, "glBeginTransformFeedback");
+    glad_glBindBufferBase = (PFNGLBINDBUFFERBASEPROC) load(userptr, "glBindBufferBase");
+    glad_glBindBufferRange = (PFNGLBINDBUFFERRANGEPROC) load(userptr, "glBindBufferRange");
+    glad_glBindFragDataLocation = (PFNGLBINDFRAGDATALOCATIONPROC) load(userptr, "glBindFragDataLocation");
+    glad_glBindFramebuffer = (PFNGLBINDFRAMEBUFFERPROC) load(userptr, "glBindFramebuffer");
+    glad_glBindRenderbuffer = (PFNGLBINDRENDERBUFFERPROC) load(userptr, "glBindRenderbuffer");
+    glad_glBindVertexArray = (PFNGLBINDVERTEXARRAYPROC) load(userptr, "glBindVertexArray");
+    glad_glBlitFramebuffer = (PFNGLBLITFRAMEBUFFERPROC) load(userptr, "glBlitFramebuffer");
+    glad_glCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSPROC) load(userptr, "glCheckFramebufferStatus");
+    glad_glClampColor = (PFNGLCLAMPCOLORPROC) load(userptr, "glClampColor");
+    glad_glClearBufferfi = (PFNGLCLEARBUFFERFIPROC) load(userptr, "glClearBufferfi");
+    glad_glClearBufferfv = (PFNGLCLEARBUFFERFVPROC) load(userptr, "glClearBufferfv");
+    glad_glClearBufferiv = (PFNGLCLEARBUFFERIVPROC) load(userptr, "glClearBufferiv");
+    glad_glClearBufferuiv = (PFNGLCLEARBUFFERUIVPROC) load(userptr, "glClearBufferuiv");
+    glad_glColorMaski = (PFNGLCOLORMASKIPROC) load(userptr, "glColorMaski");
+    glad_glDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSPROC) load(userptr, "glDeleteFramebuffers");
+    glad_glDeleteRenderbuffers = (PFNGLDELETERENDERBUFFERSPROC) load(userptr, "glDeleteRenderbuffers");
+    glad_glDeleteVertexArrays = (PFNGLDELETEVERTEXARRAYSPROC) load(userptr, "glDeleteVertexArrays");
+    glad_glDisablei = (PFNGLDISABLEIPROC) load(userptr, "glDisablei");
+    glad_glEnablei = (PFNGLENABLEIPROC) load(userptr, "glEnablei");
+    glad_glEndConditionalRender = (PFNGLENDCONDITIONALRENDERPROC) load(userptr, "glEndConditionalRender");
+    glad_glEndTransformFeedback = (PFNGLENDTRANSFORMFEEDBACKPROC) load(userptr, "glEndTransformFeedback");
+    glad_glFlushMappedBufferRange = (PFNGLFLUSHMAPPEDBUFFERRANGEPROC) load(userptr, "glFlushMappedBufferRange");
+    glad_glFramebufferRenderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFERPROC) load(userptr, "glFramebufferRenderbuffer");
+    glad_glFramebufferTexture1D = (PFNGLFRAMEBUFFERTEXTURE1DPROC) load(userptr, "glFramebufferTexture1D");
+    glad_glFramebufferTexture2D = (PFNGLFRAMEBUFFERTEXTURE2DPROC) load(userptr, "glFramebufferTexture2D");
+    glad_glFramebufferTexture3D = (PFNGLFRAMEBUFFERTEXTURE3DPROC) load(userptr, "glFramebufferTexture3D");
+    glad_glFramebufferTextureLayer = (PFNGLFRAMEBUFFERTEXTURELAYERPROC) load(userptr, "glFramebufferTextureLayer");
+    glad_glGenFramebuffers = (PFNGLGENFRAMEBUFFERSPROC) load(userptr, "glGenFramebuffers");
+    glad_glGenRenderbuffers = (PFNGLGENRENDERBUFFERSPROC) load(userptr, "glGenRenderbuffers");
+    glad_glGenVertexArrays = (PFNGLGENVERTEXARRAYSPROC) load(userptr, "glGenVertexArrays");
+    glad_glGenerateMipmap = (PFNGLGENERATEMIPMAPPROC) load(userptr, "glGenerateMipmap");
+    glad_glGetBooleani_v = (PFNGLGETBOOLEANI_VPROC) load(userptr, "glGetBooleani_v");
+    glad_glGetFragDataLocation = (PFNGLGETFRAGDATALOCATIONPROC) load(userptr, "glGetFragDataLocation");
+    glad_glGetFramebufferAttachmentParameteriv = (PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC) load(userptr, "glGetFramebufferAttachmentParameteriv");
+    glad_glGetIntegeri_v = (PFNGLGETINTEGERI_VPROC) load(userptr, "glGetIntegeri_v");
+    glad_glGetRenderbufferParameteriv = (PFNGLGETRENDERBUFFERPARAMETERIVPROC) load(userptr, "glGetRenderbufferParameteriv");
+    glad_glGetStringi = (PFNGLGETSTRINGIPROC) load(userptr, "glGetStringi");
+    glad_glGetTexParameterIiv = (PFNGLGETTEXPARAMETERIIVPROC) load(userptr, "glGetTexParameterIiv");
+    glad_glGetTexParameterIuiv = (PFNGLGETTEXPARAMETERIUIVPROC) load(userptr, "glGetTexParameterIuiv");
+    glad_glGetTransformFeedbackVarying = (PFNGLGETTRANSFORMFEEDBACKVARYINGPROC) load(userptr, "glGetTransformFeedbackVarying");
+    glad_glGetUniformuiv = (PFNGLGETUNIFORMUIVPROC) load(userptr, "glGetUniformuiv");
+    glad_glGetVertexAttribIiv = (PFNGLGETVERTEXATTRIBIIVPROC) load(userptr, "glGetVertexAttribIiv");
+    glad_glGetVertexAttribIuiv = (PFNGLGETVERTEXATTRIBIUIVPROC) load(userptr, "glGetVertexAttribIuiv");
+    glad_glIsEnabledi = (PFNGLISENABLEDIPROC) load(userptr, "glIsEnabledi");
+    glad_glIsFramebuffer = (PFNGLISFRAMEBUFFERPROC) load(userptr, "glIsFramebuffer");
+    glad_glIsRenderbuffer = (PFNGLISRENDERBUFFERPROC) load(userptr, "glIsRenderbuffer");
+    glad_glIsVertexArray = (PFNGLISVERTEXARRAYPROC) load(userptr, "glIsVertexArray");
+    glad_glMapBufferRange = (PFNGLMAPBUFFERRANGEPROC) load(userptr, "glMapBufferRange");
+    glad_glRenderbufferStorage = (PFNGLRENDERBUFFERSTORAGEPROC) load(userptr, "glRenderbufferStorage");
+    glad_glRenderbufferStorageMultisample = (PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC) load(userptr, "glRenderbufferStorageMultisample");
+    glad_glTexParameterIiv = (PFNGLTEXPARAMETERIIVPROC) load(userptr, "glTexParameterIiv");
+    glad_glTexParameterIuiv = (PFNGLTEXPARAMETERIUIVPROC) load(userptr, "glTexParameterIuiv");
+    glad_glTransformFeedbackVaryings = (PFNGLTRANSFORMFEEDBACKVARYINGSPROC) load(userptr, "glTransformFeedbackVaryings");
+    glad_glUniform1ui = (PFNGLUNIFORM1UIPROC) load(userptr, "glUniform1ui");
+    glad_glUniform1uiv = (PFNGLUNIFORM1UIVPROC) load(userptr, "glUniform1uiv");
+    glad_glUniform2ui = (PFNGLUNIFORM2UIPROC) load(userptr, "glUniform2ui");
+    glad_glUniform2uiv = (PFNGLUNIFORM2UIVPROC) load(userptr, "glUniform2uiv");
+    glad_glUniform3ui = (PFNGLUNIFORM3UIPROC) load(userptr, "glUniform3ui");
+    glad_glUniform3uiv = (PFNGLUNIFORM3UIVPROC) load(userptr, "glUniform3uiv");
+    glad_glUniform4ui = (PFNGLUNIFORM4UIPROC) load(userptr, "glUniform4ui");
+    glad_glUniform4uiv = (PFNGLUNIFORM4UIVPROC) load(userptr, "glUniform4uiv");
+    glad_glVertexAttribI1i = (PFNGLVERTEXATTRIBI1IPROC) load(userptr, "glVertexAttribI1i");
+    glad_glVertexAttribI1iv = (PFNGLVERTEXATTRIBI1IVPROC) load(userptr, "glVertexAttribI1iv");
+    glad_glVertexAttribI1ui = (PFNGLVERTEXATTRIBI1UIPROC) load(userptr, "glVertexAttribI1ui");
+    glad_glVertexAttribI1uiv = (PFNGLVERTEXATTRIBI1UIVPROC) load(userptr, "glVertexAttribI1uiv");
+    glad_glVertexAttribI2i = (PFNGLVERTEXATTRIBI2IPROC) load(userptr, "glVertexAttribI2i");
+    glad_glVertexAttribI2iv = (PFNGLVERTEXATTRIBI2IVPROC) load(userptr, "glVertexAttribI2iv");
+    glad_glVertexAttribI2ui = (PFNGLVERTEXATTRIBI2UIPROC) load(userptr, "glVertexAttribI2ui");
+    glad_glVertexAttribI2uiv = (PFNGLVERTEXATTRIBI2UIVPROC) load(userptr, "glVertexAttribI2uiv");
+    glad_glVertexAttribI3i = (PFNGLVERTEXATTRIBI3IPROC) load(userptr, "glVertexAttribI3i");
+    glad_glVertexAttribI3iv = (PFNGLVERTEXATTRIBI3IVPROC) load(userptr, "glVertexAttribI3iv");
+    glad_glVertexAttribI3ui = (PFNGLVERTEXATTRIBI3UIPROC) load(userptr, "glVertexAttribI3ui");
+    glad_glVertexAttribI3uiv = (PFNGLVERTEXATTRIBI3UIVPROC) load(userptr, "glVertexAttribI3uiv");
+    glad_glVertexAttribI4bv = (PFNGLVERTEXATTRIBI4BVPROC) load(userptr, "glVertexAttribI4bv");
+    glad_glVertexAttribI4i = (PFNGLVERTEXATTRIBI4IPROC) load(userptr, "glVertexAttribI4i");
+    glad_glVertexAttribI4iv = (PFNGLVERTEXATTRIBI4IVPROC) load(userptr, "glVertexAttribI4iv");
+    glad_glVertexAttribI4sv = (PFNGLVERTEXATTRIBI4SVPROC) load(userptr, "glVertexAttribI4sv");
+    glad_glVertexAttribI4ubv = (PFNGLVERTEXATTRIBI4UBVPROC) load(userptr, "glVertexAttribI4ubv");
+    glad_glVertexAttribI4ui = (PFNGLVERTEXATTRIBI4UIPROC) load(userptr, "glVertexAttribI4ui");
+    glad_glVertexAttribI4uiv = (PFNGLVERTEXATTRIBI4UIVPROC) load(userptr, "glVertexAttribI4uiv");
+    glad_glVertexAttribI4usv = (PFNGLVERTEXATTRIBI4USVPROC) load(userptr, "glVertexAttribI4usv");
+    glad_glVertexAttribIPointer = (PFNGLVERTEXATTRIBIPOINTERPROC) load(userptr, "glVertexAttribIPointer");
+}
+static void glad_gl_load_GL_VERSION_3_1( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_3_1) return;
+    glad_glBindBufferBase = (PFNGLBINDBUFFERBASEPROC) load(userptr, "glBindBufferBase");
+    glad_glBindBufferRange = (PFNGLBINDBUFFERRANGEPROC) load(userptr, "glBindBufferRange");
+    glad_glCopyBufferSubData = (PFNGLCOPYBUFFERSUBDATAPROC) load(userptr, "glCopyBufferSubData");
+    glad_glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDPROC) load(userptr, "glDrawArraysInstanced");
+    glad_glDrawElementsInstanced = (PFNGLDRAWELEMENTSINSTANCEDPROC) load(userptr, "glDrawElementsInstanced");
+    glad_glGetActiveUniformBlockName = (PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC) load(userptr, "glGetActiveUniformBlockName");
+    glad_glGetActiveUniformBlockiv = (PFNGLGETACTIVEUNIFORMBLOCKIVPROC) load(userptr, "glGetActiveUniformBlockiv");
+    glad_glGetActiveUniformName = (PFNGLGETACTIVEUNIFORMNAMEPROC) load(userptr, "glGetActiveUniformName");
+    glad_glGetActiveUniformsiv = (PFNGLGETACTIVEUNIFORMSIVPROC) load(userptr, "glGetActiveUniformsiv");
+    glad_glGetIntegeri_v = (PFNGLGETINTEGERI_VPROC) load(userptr, "glGetIntegeri_v");
+    glad_glGetUniformBlockIndex = (PFNGLGETUNIFORMBLOCKINDEXPROC) load(userptr, "glGetUniformBlockIndex");
+    glad_glGetUniformIndices = (PFNGLGETUNIFORMINDICESPROC) load(userptr, "glGetUniformIndices");
+    glad_glPrimitiveRestartIndex = (PFNGLPRIMITIVERESTARTINDEXPROC) load(userptr, "glPrimitiveRestartIndex");
+    glad_glTexBuffer = (PFNGLTEXBUFFERPROC) load(userptr, "glTexBuffer");
+    glad_glUniformBlockBinding = (PFNGLUNIFORMBLOCKBINDINGPROC) load(userptr, "glUniformBlockBinding");
+}
+static void glad_gl_load_GL_VERSION_3_2( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_3_2) return;
+    glad_glClientWaitSync = (PFNGLCLIENTWAITSYNCPROC) load(userptr, "glClientWaitSync");
+    glad_glDeleteSync = (PFNGLDELETESYNCPROC) load(userptr, "glDeleteSync");
+    glad_glDrawElementsBaseVertex = (PFNGLDRAWELEMENTSBASEVERTEXPROC) load(userptr, "glDrawElementsBaseVertex");
+    glad_glDrawElementsInstancedBaseVertex = (PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC) load(userptr, "glDrawElementsInstancedBaseVertex");
+    glad_glDrawRangeElementsBaseVertex = (PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC) load(userptr, "glDrawRangeElementsBaseVertex");
+    glad_glFenceSync = (PFNGLFENCESYNCPROC) load(userptr, "glFenceSync");
+    glad_glFramebufferTexture = (PFNGLFRAMEBUFFERTEXTUREPROC) load(userptr, "glFramebufferTexture");
+    glad_glGetBufferParameteri64v = (PFNGLGETBUFFERPARAMETERI64VPROC) load(userptr, "glGetBufferParameteri64v");
+    glad_glGetInteger64i_v = (PFNGLGETINTEGER64I_VPROC) load(userptr, "glGetInteger64i_v");
+    glad_glGetInteger64v = (PFNGLGETINTEGER64VPROC) load(userptr, "glGetInteger64v");
+    glad_glGetMultisamplefv = (PFNGLGETMULTISAMPLEFVPROC) load(userptr, "glGetMultisamplefv");
+    glad_glGetSynciv = (PFNGLGETSYNCIVPROC) load(userptr, "glGetSynciv");
+    glad_glIsSync = (PFNGLISSYNCPROC) load(userptr, "glIsSync");
+    glad_glMultiDrawElementsBaseVertex = (PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC) load(userptr, "glMultiDrawElementsBaseVertex");
+    glad_glProvokingVertex = (PFNGLPROVOKINGVERTEXPROC) load(userptr, "glProvokingVertex");
+    glad_glSampleMaski = (PFNGLSAMPLEMASKIPROC) load(userptr, "glSampleMaski");
+    glad_glTexImage2DMultisample = (PFNGLTEXIMAGE2DMULTISAMPLEPROC) load(userptr, "glTexImage2DMultisample");
+    glad_glTexImage3DMultisample = (PFNGLTEXIMAGE3DMULTISAMPLEPROC) load(userptr, "glTexImage3DMultisample");
+    glad_glWaitSync = (PFNGLWAITSYNCPROC) load(userptr, "glWaitSync");
+}
+static void glad_gl_load_GL_VERSION_3_3( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_VERSION_3_3) return;
+    glad_glBindFragDataLocationIndexed = (PFNGLBINDFRAGDATALOCATIONINDEXEDPROC) load(userptr, "glBindFragDataLocationIndexed");
+    glad_glBindSampler = (PFNGLBINDSAMPLERPROC) load(userptr, "glBindSampler");
+    glad_glDeleteSamplers = (PFNGLDELETESAMPLERSPROC) load(userptr, "glDeleteSamplers");
+    glad_glGenSamplers = (PFNGLGENSAMPLERSPROC) load(userptr, "glGenSamplers");
+    glad_glGetFragDataIndex = (PFNGLGETFRAGDATAINDEXPROC) load(userptr, "glGetFragDataIndex");
+    glad_glGetQueryObjecti64v = (PFNGLGETQUERYOBJECTI64VPROC) load(userptr, "glGetQueryObjecti64v");
+    glad_glGetQueryObjectui64v = (PFNGLGETQUERYOBJECTUI64VPROC) load(userptr, "glGetQueryObjectui64v");
+    glad_glGetSamplerParameterIiv = (PFNGLGETSAMPLERPARAMETERIIVPROC) load(userptr, "glGetSamplerParameterIiv");
+    glad_glGetSamplerParameterIuiv = (PFNGLGETSAMPLERPARAMETERIUIVPROC) load(userptr, "glGetSamplerParameterIuiv");
+    glad_glGetSamplerParameterfv = (PFNGLGETSAMPLERPARAMETERFVPROC) load(userptr, "glGetSamplerParameterfv");
+    glad_glGetSamplerParameteriv = (PFNGLGETSAMPLERPARAMETERIVPROC) load(userptr, "glGetSamplerParameteriv");
+    glad_glIsSampler = (PFNGLISSAMPLERPROC) load(userptr, "glIsSampler");
+    glad_glQueryCounter = (PFNGLQUERYCOUNTERPROC) load(userptr, "glQueryCounter");
+    glad_glSamplerParameterIiv = (PFNGLSAMPLERPARAMETERIIVPROC) load(userptr, "glSamplerParameterIiv");
+    glad_glSamplerParameterIuiv = (PFNGLSAMPLERPARAMETERIUIVPROC) load(userptr, "glSamplerParameterIuiv");
+    glad_glSamplerParameterf = (PFNGLSAMPLERPARAMETERFPROC) load(userptr, "glSamplerParameterf");
+    glad_glSamplerParameterfv = (PFNGLSAMPLERPARAMETERFVPROC) load(userptr, "glSamplerParameterfv");
+    glad_glSamplerParameteri = (PFNGLSAMPLERPARAMETERIPROC) load(userptr, "glSamplerParameteri");
+    glad_glSamplerParameteriv = (PFNGLSAMPLERPARAMETERIVPROC) load(userptr, "glSamplerParameteriv");
+    glad_glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISORPROC) load(userptr, "glVertexAttribDivisor");
+    glad_glVertexAttribP1ui = (PFNGLVERTEXATTRIBP1UIPROC) load(userptr, "glVertexAttribP1ui");
+    glad_glVertexAttribP1uiv = (PFNGLVERTEXATTRIBP1UIVPROC) load(userptr, "glVertexAttribP1uiv");
+    glad_glVertexAttribP2ui = (PFNGLVERTEXATTRIBP2UIPROC) load(userptr, "glVertexAttribP2ui");
+    glad_glVertexAttribP2uiv = (PFNGLVERTEXATTRIBP2UIVPROC) load(userptr, "glVertexAttribP2uiv");
+    glad_glVertexAttribP3ui = (PFNGLVERTEXATTRIBP3UIPROC) load(userptr, "glVertexAttribP3ui");
+    glad_glVertexAttribP3uiv = (PFNGLVERTEXATTRIBP3UIVPROC) load(userptr, "glVertexAttribP3uiv");
+    glad_glVertexAttribP4ui = (PFNGLVERTEXATTRIBP4UIPROC) load(userptr, "glVertexAttribP4ui");
+    glad_glVertexAttribP4uiv = (PFNGLVERTEXATTRIBP4UIVPROC) load(userptr, "glVertexAttribP4uiv");
+}
+
+
+
+#if defined(GL_ES_VERSION_3_0) || defined(GL_VERSION_3_0)
+#define GLAD_GL_IS_SOME_NEW_VERSION 1
+#else
+#define GLAD_GL_IS_SOME_NEW_VERSION 0
+#endif
+
+static int glad_gl_get_extensions( int version, const char **out_exts, unsigned int *out_num_exts_i, char ***out_exts_i) {
+#if GLAD_GL_IS_SOME_NEW_VERSION
+    if(GLAD_VERSION_MAJOR(version) < 3) {
+#else
+    (void) version;
+    (void) out_num_exts_i;
+    (void) out_exts_i;
+#endif
+        if (glad_glGetString == NULL) {
+            return 0;
+        }
+        *out_exts = (const char *)glad_glGetString(GL_EXTENSIONS);
+#if GLAD_GL_IS_SOME_NEW_VERSION
+    } else {
+        unsigned int index = 0;
+        unsigned int num_exts_i = 0;
+        char **exts_i = NULL;
+        if (glad_glGetStringi == NULL || glad_glGetIntegerv == NULL) {
+            return 0;
+        }
+        glad_glGetIntegerv(GL_NUM_EXTENSIONS, (int*) &num_exts_i);
+        if (num_exts_i > 0) {
+            exts_i = (char **) malloc(num_exts_i * (sizeof *exts_i));
+        }
+        if (exts_i == NULL) {
+            return 0;
+        }
+        for(index = 0; index < num_exts_i; index++) {
+            const char *gl_str_tmp = (const char*) glad_glGetStringi(GL_EXTENSIONS, index);
+            size_t len = strlen(gl_str_tmp) + 1;
+
+            char *local_str = (char*) malloc(len * sizeof(char));
+            if(local_str != NULL) {
+                memcpy(local_str, gl_str_tmp, len * sizeof(char));
+            }
+
+            exts_i[index] = local_str;
+        }
+
+        *out_num_exts_i = num_exts_i;
+        *out_exts_i = exts_i;
+    }
+#endif
+    return 1;
+}
+static void glad_gl_free_extensions(char **exts_i, unsigned int num_exts_i) {
+    if (exts_i != NULL) {
+        unsigned int index;
+        for(index = 0; index < num_exts_i; index++) {
+            free((void *) (exts_i[index]));
+        }
+        free((void *)exts_i);
+        exts_i = NULL;
+    }
+}
+static int glad_gl_has_extension(int version, const char *exts, unsigned int num_exts_i, char **exts_i, const char *ext) {
+    if(GLAD_VERSION_MAJOR(version) < 3 || !GLAD_GL_IS_SOME_NEW_VERSION) {
+        const char *extensions;
+        const char *loc;
+        const char *terminator;
+        extensions = exts;
+        if(extensions == NULL || ext == NULL) {
+            return 0;
+        }
+        while(1) {
+            loc = strstr(extensions, ext);
+            if(loc == NULL) {
+                return 0;
+            }
+            terminator = loc + strlen(ext);
+            if((loc == extensions || *(loc - 1) == ' ') &&
+                (*terminator == ' ' || *terminator == '\0')) {
+                return 1;
+            }
+            extensions = terminator;
+        }
+    } else {
+        unsigned int index;
+        for(index = 0; index < num_exts_i; index++) {
+            const char *e = exts_i[index];
+            if(strcmp(e, ext) == 0) {
+                return 1;
+            }
+        }
+    }
+    return 0;
+}
+
+static GLADapiproc glad_gl_get_proc_from_userptr(void *userptr, const char* name) {
+    return (GLAD_GNUC_EXTENSION (GLADapiproc (*)(const char *name)) userptr)(name);
+}
+
+static int glad_gl_find_extensions_gl( int version) {
+    const char *exts = NULL;
+    unsigned int num_exts_i = 0;
+    char **exts_i = NULL;
+    if (!glad_gl_get_extensions(version, &exts, &num_exts_i, &exts_i)) return 0;
+
+    (void) glad_gl_has_extension;
+
+    glad_gl_free_extensions(exts_i, num_exts_i);
+
+    return 1;
+}
+
+static int glad_gl_find_core_gl(void) {
+    int i;
+    const char* version;
+    const char* prefixes[] = {
+        "OpenGL ES-CM ",
+        "OpenGL ES-CL ",
+        "OpenGL ES ",
+        "OpenGL SC ",
+        NULL
+    };
+    int major = 0;
+    int minor = 0;
+    version = (const char*) glad_glGetString(GL_VERSION);
+    if (!version) return 0;
+    for (i = 0;  prefixes[i];  i++) {
+        const size_t length = strlen(prefixes[i]);
+        if (strncmp(version, prefixes[i], length) == 0) {
+            version += length;
+            break;
+        }
+    }
+
+    GLAD_IMPL_UTIL_SSCANF(version, "%d.%d", &major, &minor);
+
+    GLAD_GL_VERSION_1_0 = (major == 1 && minor >= 0) || major > 1;
+    GLAD_GL_VERSION_1_1 = (major == 1 && minor >= 1) || major > 1;
+    GLAD_GL_VERSION_1_2 = (major == 1 && minor >= 2) || major > 1;
+    GLAD_GL_VERSION_1_3 = (major == 1 && minor >= 3) || major > 1;
+    GLAD_GL_VERSION_1_4 = (major == 1 && minor >= 4) || major > 1;
+    GLAD_GL_VERSION_1_5 = (major == 1 && minor >= 5) || major > 1;
+    GLAD_GL_VERSION_2_0 = (major == 2 && minor >= 0) || major > 2;
+    GLAD_GL_VERSION_2_1 = (major == 2 && minor >= 1) || major > 2;
+    GLAD_GL_VERSION_3_0 = (major == 3 && minor >= 0) || major > 3;
+    GLAD_GL_VERSION_3_1 = (major == 3 && minor >= 1) || major > 3;
+    GLAD_GL_VERSION_3_2 = (major == 3 && minor >= 2) || major > 3;
+    GLAD_GL_VERSION_3_3 = (major == 3 && minor >= 3) || major > 3;
+
+    return GLAD_MAKE_VERSION(major, minor);
+}
+
+int gladLoadGLUserPtr( GLADuserptrloadfunc load, void *userptr) {
+    int version;
+
+    glad_glGetString = (PFNGLGETSTRINGPROC) load(userptr, "glGetString");
+    if(glad_glGetString == NULL) return 0;
+    if(glad_glGetString(GL_VERSION) == NULL) return 0;
+    version = glad_gl_find_core_gl();
+
+    glad_gl_load_GL_VERSION_1_0(load, userptr);
+    glad_gl_load_GL_VERSION_1_1(load, userptr);
+    glad_gl_load_GL_VERSION_1_2(load, userptr);
+    glad_gl_load_GL_VERSION_1_3(load, userptr);
+    glad_gl_load_GL_VERSION_1_4(load, userptr);
+    glad_gl_load_GL_VERSION_1_5(load, userptr);
+    glad_gl_load_GL_VERSION_2_0(load, userptr);
+    glad_gl_load_GL_VERSION_2_1(load, userptr);
+    glad_gl_load_GL_VERSION_3_0(load, userptr);
+    glad_gl_load_GL_VERSION_3_1(load, userptr);
+    glad_gl_load_GL_VERSION_3_2(load, userptr);
+    glad_gl_load_GL_VERSION_3_3(load, userptr);
+
+    if (!glad_gl_find_extensions_gl(version)) return 0;
+
+
+
+    return version;
+}
+
+
+int gladLoadGL( GLADloadfunc load) {
+    return gladLoadGLUserPtr( glad_gl_get_proc_from_userptr, GLAD_GNUC_EXTENSION (void*) load);
+}
+
+
+
+ 
+
+#ifdef GLAD_GL
+
+#ifndef GLAD_LOADER_LIBRARY_C_
+#define GLAD_LOADER_LIBRARY_C_
+
+#include <stddef.h>
+#include <stdlib.h>
+
+#if GLAD_PLATFORM_WIN32
+#include <windows.h>
+#else
+#include <dlfcn.h>
+#endif
+
+
+static void* glad_get_dlopen_handle(const char *lib_names[], int length) {
+    void *handle = NULL;
+    int i;
+
+    for (i = 0; i < length; ++i) {
+#if GLAD_PLATFORM_WIN32
+  #if GLAD_PLATFORM_UWP
+        size_t buffer_size = (strlen(lib_names[i]) + 1) * sizeof(WCHAR);
+        LPWSTR buffer = (LPWSTR) malloc(buffer_size);
+        if (buffer != NULL) {
+            int ret = MultiByteToWideChar(CP_ACP, 0, lib_names[i], -1, buffer, buffer_size);
+            if (ret != 0) {
+                handle = (void*) LoadPackagedLibrary(buffer, 0);
+            }
+            free((void*) buffer);
+        }
+  #else
+        handle = (void*) LoadLibraryA(lib_names[i]);
+  #endif
+#else
+        handle = dlopen(lib_names[i], RTLD_LAZY | RTLD_LOCAL);
+#endif
+        if (handle != NULL) {
+            return handle;
+        }
+    }
+
+    return NULL;
+}
+
+static void glad_close_dlopen_handle(void* handle) {
+    if (handle != NULL) {
+#if GLAD_PLATFORM_WIN32
+        FreeLibrary((HMODULE) handle);
+#else
+        dlclose(handle);
+#endif
+    }
+}
+
+static GLADapiproc glad_dlsym_handle(void* handle, const char *name) {
+    if (handle == NULL) {
+        return NULL;
+    }
+
+#if GLAD_PLATFORM_WIN32
+    return (GLADapiproc) GetProcAddress((HMODULE) handle, name);
+#else
+    return GLAD_GNUC_EXTENSION (GLADapiproc) dlsym(handle, name);
+#endif
+}
+
+#endif /* GLAD_LOADER_LIBRARY_C_ */
+
+typedef void* (GLAD_API_PTR *GLADglprocaddrfunc)(const char*);
+struct _glad_gl_userptr {
+    void *handle;
+    GLADglprocaddrfunc gl_get_proc_address_ptr;
+};
+
+static GLADapiproc glad_gl_get_proc(void *vuserptr, const char *name) {
+    struct _glad_gl_userptr userptr = *(struct _glad_gl_userptr*) vuserptr;
+    GLADapiproc result = NULL;
+
+    if(userptr.gl_get_proc_address_ptr != NULL) {
+        result = GLAD_GNUC_EXTENSION (GLADapiproc) userptr.gl_get_proc_address_ptr(name);
+    }
+    if(result == NULL) {
+        result = glad_dlsym_handle(userptr.handle, name);
+    }
+
+    return result;
+}
+
+static void* _gl_handle = NULL;
+
+static void* glad_gl_dlopen_handle(void) {
+#if GLAD_PLATFORM_APPLE
+    static const char *NAMES[] = {
+        "../Frameworks/OpenGL.framework/OpenGL",
+        "/Library/Frameworks/OpenGL.framework/OpenGL",
+        "/System/Library/Frameworks/OpenGL.framework/OpenGL",
+        "/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL"
+    };
+#elif GLAD_PLATFORM_WIN32
+    static const char *NAMES[] = {"opengl32.dll"};
+#else
+    static const char *NAMES[] = {
+  #if defined(__CYGWIN__)
+        "libGL-1.so",
+  #endif
+        "libGL.so.1",
+        "libGL.so"
+    };
+#endif
+
+    if (_gl_handle == NULL) {
+        _gl_handle = glad_get_dlopen_handle(NAMES, sizeof(NAMES) / sizeof(NAMES[0]));
+    }
+
+    return _gl_handle;
+}
+
+static struct _glad_gl_userptr glad_gl_build_userptr(void *handle) {
+    struct _glad_gl_userptr userptr;
+
+    userptr.handle = handle;
+#if GLAD_PLATFORM_APPLE || defined(__HAIKU__)
+    userptr.gl_get_proc_address_ptr = NULL;
+#elif GLAD_PLATFORM_WIN32
+    userptr.gl_get_proc_address_ptr =
+        (GLADglprocaddrfunc) glad_dlsym_handle(handle, "wglGetProcAddress");
+#else
+    userptr.gl_get_proc_address_ptr =
+        (GLADglprocaddrfunc) glad_dlsym_handle(handle, "glXGetProcAddressARB");
+#endif
+
+    return userptr;
+}
+
+int gladLoaderLoadGL(void) {
+    int version = 0;
+    void *handle;
+    int did_load = 0;
+    struct _glad_gl_userptr userptr;
+
+    did_load = _gl_handle == NULL;
+    handle = glad_gl_dlopen_handle();
+    if (handle) {
+        userptr = glad_gl_build_userptr(handle);
+
+        version = gladLoadGLUserPtr(glad_gl_get_proc, &userptr);
+
+        if (did_load) {
+            gladLoaderUnloadGL();
+        }
+    }
+
+    return version;
+}
+
+
+
+void gladLoaderUnloadGL(void) {
+    if (_gl_handle != NULL) {
+        glad_close_dlopen_handle(_gl_handle);
+        _gl_handle = NULL;
+    }
+}
+
+#endif /* GLAD_GL */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GLAD_GL_IMPLEMENTATION */
+

Backends/RmlUi_Renderer_GL3.cpp

@@ -0,0 +1,700 @@
+/*
+ * This source file is part of RmlUi, the HTML/CSS Interface Middleware
+ *
+ * For the latest information, see http://github.com/mikke89/RmlUi
+ *
+ * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
+ * Copyright (c) 2019 The RmlUi Team, and contributors
+ *
+ * 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.
+ *
+ */
+
+#include "RmlUi_Renderer_GL3.h"
+#include <RmlUi/Core/Core.h>
+#include <RmlUi/Core/FileInterface.h>
+#include <RmlUi/Core/Log.h>
+#include <RmlUi/Core/Platform.h>
+#include <string.h>
+
+#if defined(RMLUI_PLATFORM_WIN32) && !defined(__MINGW32__)
+	// function call missing argument list
+	#pragma warning(disable : 4551)
+	// unreferenced local function has been removed
+	#pragma warning(disable : 4505)
+#endif
+
+#if defined RMLUI_PLATFORM_EMSCRIPTEN
+	#define RMLUI_SHADER_HEADER "#version 300 es\nprecision highp float;\n"
+	#include <GLES3/gl3.h>
+#else
+	#define RMLUI_SHADER_HEADER "#version 330\n"
+	#define GLAD_GL_IMPLEMENTATION
+	#include "RmlUi_Include_GL3.h"
+#endif
+
+static const char* shader_main_vertex = RMLUI_SHADER_HEADER R"(
+uniform vec2 _translate;
+uniform mat4 _transform;
+
+in vec2 inPosition;
+in vec4 inColor0;
+in vec2 inTexCoord0;
+
+out vec2 fragTexCoord;
+out vec4 fragColor;
+
+void main() {
+	fragTexCoord = inTexCoord0;
+	fragColor = inColor0;
+
+	vec2 translatedPos = inPosition + _translate.xy;
+	vec4 outPos = _transform * vec4(translatedPos, 0, 1);
+
+    gl_Position = outPos;
+}
+)";
+
+static const char* shader_main_fragment_texture = RMLUI_SHADER_HEADER R"(
+uniform sampler2D _tex;
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+out vec4 finalColor;
+
+void main() {
+	vec4 texColor = texture(_tex, fragTexCoord);
+	finalColor = fragColor * texColor;
+}
+)";
+static const char* shader_main_fragment_color = RMLUI_SHADER_HEADER R"(
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+out vec4 finalColor;
+
+void main() {
+	finalColor = fragColor;
+}
+)";
+
+namespace Gfx {
+
+enum class ProgramUniform { Translate, Transform, Tex, Count };
+static const char* const program_uniform_names[(size_t)ProgramUniform::Count] = {"_translate", "_transform", "_tex"};
+
+enum class VertexAttribute { Position, Color0, TexCoord0, Count };
+static const char* const vertex_attribute_names[(size_t)VertexAttribute::Count] = {"inPosition", "inColor0", "inTexCoord0"};
+
+struct CompiledGeometryData {
+	GLuint texture;
+	GLuint vao;
+	GLuint vbo;
+	GLuint ibo;
+	GLsizei draw_count;
+};
+
+struct ProgramData {
+	GLuint id;
+	GLint uniform_locations[(size_t)ProgramUniform::Count];
+};
+
+struct ShadersData {
+	ProgramData program_color;
+	ProgramData program_texture;
+	GLuint shader_main_vertex;
+	GLuint shader_main_fragment_color;
+	GLuint shader_main_fragment_texture;
+};
+
+static void CheckGLError(const char* operation_name)
+{
+#ifdef RMLUI_DEBUG
+	GLenum error_code = glGetError();
+	if (error_code != GL_NO_ERROR)
+	{
+		static const Rml::Pair<GLenum, const char*> error_names[] = {{GL_INVALID_ENUM, "GL_INVALID_ENUM"}, {GL_INVALID_VALUE, "GL_INVALID_VALUE"},
+			{GL_INVALID_OPERATION, "GL_INVALID_OPERATION"}, {GL_OUT_OF_MEMORY, "GL_OUT_OF_MEMORY"}};
+		const char* error_str = "''";
+		for (auto& err : error_names)
+		{
+			if (err.first == error_code)
+			{
+				error_str = err.second;
+				break;
+			}
+		}
+		Rml::Log::Message(Rml::Log::LT_ERROR, "OpenGL error during %s. Error code 0x%x (%s).", operation_name, error_code, error_str);
+	}
+#endif
+	(void)operation_name;
+}
+
+// Create the shader, 'shader_type' is either GL_VERTEX_SHADER or GL_FRAGMENT_SHADER.
+static GLuint CreateShader(GLenum shader_type, const char* code_string)
+{
+	GLuint id = glCreateShader(shader_type);
+
+	glShaderSource(id, 1, (const GLchar**)&code_string, NULL);
+	glCompileShader(id);
+
+	GLint status = 0;
+	glGetShaderiv(id, GL_COMPILE_STATUS, &status);
+	if (status == GL_FALSE)
+	{
+		GLint info_log_length = 0;
+		glGetShaderiv(id, GL_INFO_LOG_LENGTH, &info_log_length);
+		char* info_log_string = new char[info_log_length + 1];
+		glGetShaderInfoLog(id, info_log_length, NULL, info_log_string);
+
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Compile failure in OpenGL shader: %s", info_log_string);
+		delete[] info_log_string;
+		glDeleteShader(id);
+		return 0;
+	}
+
+	CheckGLError("CreateShader");
+
+	return id;
+}
+
+static void BindAttribLocations(GLuint program)
+{
+	for (GLuint i = 0; i < (GLuint)VertexAttribute::Count; i++)
+	{
+		glBindAttribLocation(program, i, vertex_attribute_names[i]);
+	}
+	CheckGLError("BindAttribLocations");
+}
+
+static bool CreateProgram(GLuint vertex_shader, GLuint fragment_shader, ProgramData& out_program)
+{
+	GLuint id = glCreateProgram();
+	RMLUI_ASSERT(id);
+
+	BindAttribLocations(id);
+
+	glAttachShader(id, vertex_shader);
+	glAttachShader(id, fragment_shader);
+
+	glLinkProgram(id);
+
+	glDetachShader(id, vertex_shader);
+	glDetachShader(id, fragment_shader);
+
+	GLint status = 0;
+	glGetProgramiv(id, GL_LINK_STATUS, &status);
+	if (status == GL_FALSE)
+	{
+		GLint info_log_length = 0;
+		glGetProgramiv(id, GL_INFO_LOG_LENGTH, &info_log_length);
+		char* info_log_string = new char[info_log_length + 1];
+		glGetProgramInfoLog(id, info_log_length, NULL, info_log_string);
+
+		Rml::Log::Message(Rml::Log::LT_ERROR, "OpenGL program linking failure: %s", info_log_string);
+		delete[] info_log_string;
+		glDeleteProgram(id);
+		return false;
+	}
+
+	out_program = {};
+	out_program.id = id;
+
+	// Make a lookup table for the uniform locations.
+	GLint num_active_uniforms = 0;
+	glGetProgramiv(id, GL_ACTIVE_UNIFORMS, &num_active_uniforms);
+
+	constexpr size_t name_size = 64;
+	GLchar name_buf[name_size] = "";
+	for (int unif = 0; unif < num_active_uniforms; ++unif)
+	{
+		GLint array_size = 0;
+		GLenum type = 0;
+		GLsizei actual_length = 0;
+		glGetActiveUniform(id, unif, name_size, &actual_length, &array_size, &type, name_buf);
+		GLint location = glGetUniformLocation(id, name_buf);
+
+		// See if we have the name in our pre-defined name list.
+		ProgramUniform program_uniform = ProgramUniform::Count;
+		for (int i = 0; i < (int)ProgramUniform::Count; i++)
+		{
+			const char* uniform_name = program_uniform_names[i];
+			if (strcmp(name_buf, uniform_name) == 0)
+			{
+				program_uniform = (ProgramUniform)i;
+				break;
+			}
+		}
+
+		if ((size_t)program_uniform < (size_t)ProgramUniform::Count)
+		{
+			out_program.uniform_locations[(size_t)program_uniform] = location;
+		}
+		else
+		{
+			Rml::Log::Message(Rml::Log::LT_ERROR, "OpenGL program uses unknown uniform '%s'.", name_buf);
+			return false;
+		}
+	}
+
+	CheckGLError("CreateProgram");
+
+	return true;
+}
+
+static bool CreateShaders(ShadersData& out_shaders)
+{
+	out_shaders = {};
+	GLuint& main_vertex = out_shaders.shader_main_vertex;
+	GLuint& main_fragment_color = out_shaders.shader_main_fragment_color;
+	GLuint& main_fragment_texture = out_shaders.shader_main_fragment_texture;
+
+	main_vertex = CreateShader(GL_VERTEX_SHADER, shader_main_vertex);
+	if (!main_vertex)
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Could not create OpenGL shader: 'shader_main_vertex'.");
+		return false;
+	}
+	main_fragment_color = CreateShader(GL_FRAGMENT_SHADER, shader_main_fragment_color);
+	if (!main_fragment_color)
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Could not create OpenGL shader: 'shader_main_fragment_color'.");
+		return false;
+	}
+	main_fragment_texture = CreateShader(GL_FRAGMENT_SHADER, shader_main_fragment_texture);
+	if (!main_fragment_texture)
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Could not create OpenGL shader: 'shader_main_fragment_texture'.");
+		return false;
+	}
+
+	if (!CreateProgram(main_vertex, main_fragment_color, out_shaders.program_color))
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Could not create OpenGL program: 'program_color'.");
+		return false;
+	}
+	if (!CreateProgram(main_vertex, main_fragment_texture, out_shaders.program_texture))
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Could not create OpenGL program: 'program_texture'.");
+		return false;
+	}
+
+	return true;
+}
+
+static void DestroyShaders(ShadersData& shaders)
+{
+	glDeleteProgram(shaders.program_color.id);
+	glDeleteProgram(shaders.program_texture.id);
+
+	glDeleteShader(shaders.shader_main_vertex);
+	glDeleteShader(shaders.shader_main_fragment_color);
+	glDeleteShader(shaders.shader_main_fragment_texture);
+
+	shaders = {};
+}
+
+} // namespace Gfx
+
+RenderInterface_GL3::RenderInterface_GL3()
+{
+	shaders = Rml::MakeUnique<Gfx::ShadersData>();
+
+	if (!Gfx::CreateShaders(*shaders))
+		shaders.reset();
+}
+
+RenderInterface_GL3::~RenderInterface_GL3()
+{
+	if (shaders)
+		Gfx::DestroyShaders(*shaders);
+}
+
+void RenderInterface_GL3::SetViewport(int width, int height)
+{
+	viewport_width = width;
+	viewport_height = height;
+}
+
+void RenderInterface_GL3::BeginFrame()
+{
+	RMLUI_ASSERT(viewport_width > 0 && viewport_height > 0);
+	glViewport(0, 0, viewport_width, viewport_height);
+
+	glClearStencil(0);
+	glClearColor(0, 0, 0, 1);
+
+	glDisable(GL_CULL_FACE);
+
+	glEnable(GL_STENCIL_TEST);
+	glStencilFunc(GL_ALWAYS, 1, GLuint(-1));
+	glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+
+	glEnable(GL_BLEND);
+	glBlendEquation(GL_FUNC_ADD);
+	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+	projection = Rml::Matrix4f::ProjectOrtho(0, (float)viewport_width, (float)viewport_height, 0, -10000, 10000);
+
+	SetTransform(nullptr);
+}
+
+void RenderInterface_GL3::EndFrame() {}
+
+void RenderInterface_GL3::Clear()
+{
+	glClearStencil(0);
+	glClearColor(0, 0, 0, 1);
+	glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+}
+
+void RenderInterface_GL3::RenderGeometry(Rml::Vertex* vertices, int num_vertices, int* indices, int num_indices, const Rml::TextureHandle texture,
+	const Rml::Vector2f& translation)
+{
+	Rml::CompiledGeometryHandle geometry = CompileGeometry(vertices, num_vertices, indices, num_indices, texture);
+
+	if (geometry)
+	{
+		RenderCompiledGeometry(geometry, translation);
+		ReleaseCompiledGeometry(geometry);
+	}
+}
+
+Rml::CompiledGeometryHandle RenderInterface_GL3::CompileGeometry(Rml::Vertex* vertices, int num_vertices, int* indices, int num_indices,
+	Rml::TextureHandle texture)
+{
+	constexpr GLenum draw_usage = GL_STATIC_DRAW;
+
+	GLuint vao = 0;
+	GLuint vbo = 0;
+	GLuint ibo = 0;
+
+	glGenVertexArrays(1, &vao);
+	glGenBuffers(1, &vbo);
+	glGenBuffers(1, &ibo);
+	glBindVertexArray(vao);
+
+	glBindBuffer(GL_ARRAY_BUFFER, vbo);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(Rml::Vertex) * num_vertices, (const void*)vertices, draw_usage);
+
+	glEnableVertexAttribArray((GLuint)Gfx::VertexAttribute::Position);
+	glVertexAttribPointer((GLuint)Gfx::VertexAttribute::Position, 2, GL_FLOAT, GL_FALSE, sizeof(Rml::Vertex),
+		(const GLvoid*)(offsetof(Rml::Vertex, position)));
+
+	glEnableVertexAttribArray((GLuint)Gfx::VertexAttribute::Color0);
+	glVertexAttribPointer((GLuint)Gfx::VertexAttribute::Color0, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Rml::Vertex),
+		(const GLvoid*)(offsetof(Rml::Vertex, colour)));
+
+	glEnableVertexAttribArray((GLuint)Gfx::VertexAttribute::TexCoord0);
+	glVertexAttribPointer((GLuint)Gfx::VertexAttribute::TexCoord0, 2, GL_FLOAT, GL_FALSE, sizeof(Rml::Vertex),
+		(const GLvoid*)(offsetof(Rml::Vertex, tex_coord)));
+
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(int) * num_indices, (const void*)indices, draw_usage);
+	glBindVertexArray(0);
+
+	Gfx::CheckGLError("CompileGeometry");
+
+	Gfx::CompiledGeometryData* geometry = new Gfx::CompiledGeometryData;
+	geometry->texture = (GLuint)texture;
+	geometry->vao = vao;
+	geometry->vbo = vbo;
+	geometry->ibo = ibo;
+	geometry->draw_count = num_indices;
+
+	return (Rml::CompiledGeometryHandle)geometry;
+}
+
+void RenderInterface_GL3::RenderCompiledGeometry(Rml::CompiledGeometryHandle handle, const Rml::Vector2f& translation)
+{
+	Gfx::CompiledGeometryData* geometry = (Gfx::CompiledGeometryData*)handle;
+
+	if (geometry->texture)
+	{
+		glUseProgram(shaders->program_texture.id);
+		glBindTexture(GL_TEXTURE_2D, geometry->texture);
+		SubmitTransformUniform(ProgramId::Texture, shaders->program_texture.uniform_locations[(size_t)Gfx::ProgramUniform::Transform]);
+		glUniform2fv(shaders->program_texture.uniform_locations[(size_t)Gfx::ProgramUniform::Translate], 1, &translation.x);
+	}
+	else
+	{
+		glUseProgram(shaders->program_color.id);
+		glBindTexture(GL_TEXTURE_2D, 0);
+		SubmitTransformUniform(ProgramId::Color, shaders->program_color.uniform_locations[(size_t)Gfx::ProgramUniform::Transform]);
+		glUniform2fv(shaders->program_color.uniform_locations[(size_t)Gfx::ProgramUniform::Translate], 1, &translation.x);
+	}
+
+	glBindVertexArray(geometry->vao);
+	glDrawElements(GL_TRIANGLES, geometry->draw_count, GL_UNSIGNED_INT, (const GLvoid*)0);
+
+	Gfx::CheckGLError("RenderCompiledGeometry");
+}
+
+void RenderInterface_GL3::ReleaseCompiledGeometry(Rml::CompiledGeometryHandle handle)
+{
+	Gfx::CompiledGeometryData* geometry = (Gfx::CompiledGeometryData*)handle;
+
+	glDeleteVertexArrays(1, &geometry->vao);
+	glDeleteBuffers(1, &geometry->vbo);
+	glDeleteBuffers(1, &geometry->ibo);
+
+	delete geometry;
+}
+
+void RenderInterface_GL3::EnableScissorRegion(bool enable)
+{
+	ScissoringState new_state = ScissoringState::Disable;
+
+	if (enable)
+		new_state = (transform_active ? ScissoringState::Stencil : ScissoringState::Scissor);
+
+	if (new_state != scissoring_state)
+	{
+		// Disable old
+		if (scissoring_state == ScissoringState::Scissor)
+			glDisable(GL_SCISSOR_TEST);
+		else if (scissoring_state == ScissoringState::Stencil)
+			glStencilFunc(GL_ALWAYS, 1, GLuint(-1));
+
+		// Enable new
+		if (new_state == ScissoringState::Scissor)
+			glEnable(GL_SCISSOR_TEST);
+		else if (new_state == ScissoringState::Stencil)
+			glStencilFunc(GL_EQUAL, 1, GLuint(-1));
+
+		scissoring_state = new_state;
+	}
+}
+
+void RenderInterface_GL3::SetScissorRegion(int x, int y, int width, int height)
+{
+	if (transform_active)
+	{
+		const float left = float(x);
+		const float right = float(x + width);
+		const float top = float(y);
+		const float bottom = float(y + height);
+
+		Rml::Vertex vertices[4];
+		vertices[0].position = {left, top};
+		vertices[1].position = {right, top};
+		vertices[2].position = {right, bottom};
+		vertices[3].position = {left, bottom};
+
+		int indices[6] = {0, 2, 1, 0, 3, 2};
+
+		glClear(GL_STENCIL_BUFFER_BIT);
+		glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+		glStencilFunc(GL_ALWAYS, 1, GLuint(-1));
+		glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
+
+		RenderGeometry(vertices, 4, indices, 6, 0, Rml::Vector2f(0, 0));
+
+		glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+		glStencilFunc(GL_EQUAL, 1, GLuint(-1));
+		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+	}
+	else
+	{
+		glScissor(x, viewport_height - (y + height), width, height);
+	}
+}
+
+// Set to byte packing, or the compiler will expand our struct, which means it won't read correctly from file
+#pragma pack(1)
+struct TGAHeader {
+	char idLength;
+	char colourMapType;
+	char dataType;
+	short int colourMapOrigin;
+	short int colourMapLength;
+	char colourMapDepth;
+	short int xOrigin;
+	short int yOrigin;
+	short int width;
+	short int height;
+	char bitsPerPixel;
+	char imageDescriptor;
+};
+// Restore packing
+#pragma pack()
+
+bool RenderInterface_GL3::LoadTexture(Rml::TextureHandle& texture_handle, Rml::Vector2i& texture_dimensions, const Rml::String& source)
+{
+	Rml::FileInterface* file_interface = Rml::GetFileInterface();
+	Rml::FileHandle file_handle = file_interface->Open(source);
+	if (!file_handle)
+	{
+		return false;
+	}
+
+	file_interface->Seek(file_handle, 0, SEEK_END);
+	size_t buffer_size = file_interface->Tell(file_handle);
+	file_interface->Seek(file_handle, 0, SEEK_SET);
+
+	if (buffer_size <= sizeof(TGAHeader))
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Texture file size is smaller than TGAHeader, file is not a valid TGA image.");
+		file_interface->Close(file_handle);
+		return false;
+	}
+
+	using Rml::byte;
+	byte* buffer = new byte[buffer_size];
+	file_interface->Read(buffer, buffer_size, file_handle);
+	file_interface->Close(file_handle);
+
+	TGAHeader header;
+	memcpy(&header, buffer, sizeof(TGAHeader));
+
+	int color_mode = header.bitsPerPixel / 8;
+	int image_size = header.width * header.height * 4; // We always make 32bit textures
+
+	if (header.dataType != 2)
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Only 24/32bit uncompressed TGAs are supported.");
+		delete[] buffer;
+		return false;
+	}
+
+	// Ensure we have at least 3 colors
+	if (color_mode < 3)
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Only 24 and 32bit textures are supported.");
+		delete[] buffer;
+		return false;
+	}
+
+	const byte* image_src = buffer + sizeof(TGAHeader);
+	byte* image_dest = new byte[image_size];
+
+	// Targa is BGR, swap to RGB and flip Y axis
+	for (long y = 0; y < header.height; y++)
+	{
+		long read_index = y * header.width * color_mode;
+		long write_index = ((header.imageDescriptor & 32) != 0) ? read_index : (header.height - y - 1) * header.width * 4;
+		for (long x = 0; x < header.width; x++)
+		{
+			image_dest[write_index] = image_src[read_index + 2];
+			image_dest[write_index + 1] = image_src[read_index + 1];
+			image_dest[write_index + 2] = image_src[read_index];
+			if (color_mode == 4)
+			{
+				const int alpha = image_src[read_index + 3];
+#ifdef RMLUI_SRGB_PREMULTIPLIED_ALPHA
+				image_dest[write_index + 0] = (image_dest[write_index + 0] * alpha) / 255;
+				image_dest[write_index + 1] = (image_dest[write_index + 1] * alpha) / 255;
+				image_dest[write_index + 2] = (image_dest[write_index + 2] * alpha) / 255;
+#endif
+				image_dest[write_index + 3] = (byte)alpha;
+			}
+			else
+			{
+				image_dest[write_index + 3] = 255;
+			}
+
+			write_index += 4;
+			read_index += color_mode;
+		}
+	}
+
+	texture_dimensions.x = header.width;
+	texture_dimensions.y = header.height;
+
+	bool success = GenerateTexture(texture_handle, image_dest, texture_dimensions);
+
+	delete[] image_dest;
+	delete[] buffer;
+
+	return success;
+}
+
+bool RenderInterface_GL3::GenerateTexture(Rml::TextureHandle& texture_handle, const Rml::byte* source, const Rml::Vector2i& source_dimensions)
+{
+	GLuint texture_id = 0;
+	glGenTextures(1, &texture_id);
+	if (texture_id == 0)
+	{
+		Rml::Log::Message(Rml::Log::LT_ERROR, "Failed to generate texture.");
+		return false;
+	}
+
+	glBindTexture(GL_TEXTURE_2D, texture_id);
+
+	GLint internal_format = GL_RGBA8;
+	glTexImage2D(GL_TEXTURE_2D, 0, internal_format, source_dimensions.x, source_dimensions.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, source);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+	texture_handle = (Rml::TextureHandle)texture_id;
+
+	return true;
+}
+
+void RenderInterface_GL3::ReleaseTexture(Rml::TextureHandle texture_handle)
+{
+	glDeleteTextures(1, (GLuint*)&texture_handle);
+}
+
+void RenderInterface_GL3::SetTransform(const Rml::Matrix4f* new_transform)
+{
+	transform_active = (new_transform != nullptr);
+	transform = projection * (new_transform ? *new_transform : Rml::Matrix4f::Identity());
+	transform_dirty_state = ProgramId::All;
+}
+
+void RenderInterface_GL3::SubmitTransformUniform(ProgramId program_id, int uniform_location)
+{
+	if ((int)program_id & (int)transform_dirty_state)
+	{
+		glUniformMatrix4fv(uniform_location, 1, false, transform.data());
+		transform_dirty_state = ProgramId((int)transform_dirty_state & ~(int)program_id);
+	}
+}
+
+bool RmlGL3::Initialize(Rml::String* out_message)
+{
+#if defined RMLUI_PLATFORM_EMSCRIPTEN
+	if (out_message)
+		*out_message = "Started Emscripten WebGL renderer.";
+#else
+	const int gl_version = gladLoaderLoadGL();
+	if (gl_version == 0)
+	{
+		if (out_message)
+			*out_message = "Failed to initialize OpenGL context.";
+		return false;
+	}
+
+	if (out_message)
+		*out_message = Rml::CreateString(128, "Loaded OpenGL %d.%d.", GLAD_VERSION_MAJOR(gl_version), GLAD_VERSION_MINOR(gl_version));
+#endif
+
+	return true;
+}
+
+void RmlGL3::Shutdown()
+{
+#if !defined RMLUI_PLATFORM_EMSCRIPTEN
+	gladLoaderUnloadGL();
+#endif
+}

Backends/RmlUi_Renderer_GL3.h

@@ -0,0 +1,109 @@
+/*
+ * This source file is part of RmlUi, the HTML/CSS Interface Middleware
+ *
+ * For the latest information, see http://github.com/mikke89/RmlUi
+ *
+ * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
+ * Copyright (c) 2019 The RmlUi Team, and contributors
+ *
+ * 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 RMLUI_BACKENDS_RENDERER_GL3_H
+#define RMLUI_BACKENDS_RENDERER_GL3_H
+
+#include <RmlUi/Core/RenderInterface.h>
+#include <RmlUi/Core/Types.h>
+
+namespace Gfx {
+struct ShadersData;
+}
+
+class RenderInterface_GL3 : public Rml::RenderInterface {
+public:
+	RenderInterface_GL3();
+	~RenderInterface_GL3();
+
+	// Returns true if the renderer was successfully constructed.
+	explicit operator bool() const { return static_cast<bool>(shaders); }
+
+	// The viewport should be updated whenever the window size changes.
+	void SetViewport(int viewport_width, int viewport_height);
+
+	// Sets up OpenGL states for taking rendering commands from RmlUi.
+	void BeginFrame();
+	void EndFrame();
+
+	// Optional, can be used to clear the framebuffer.
+	void Clear();
+
+	// -- Inherited from Rml::RenderInterface --
+
+	void RenderGeometry(Rml::Vertex* vertices, int num_vertices, int* indices, int num_indices, Rml::TextureHandle texture,
+		const Rml::Vector2f& translation) override;
+
+	Rml::CompiledGeometryHandle CompileGeometry(Rml::Vertex* vertices, int num_vertices, int* indices, int num_indices,
+		Rml::TextureHandle texture) override;
+	void RenderCompiledGeometry(Rml::CompiledGeometryHandle geometry, const Rml::Vector2f& translation) override;
+	void ReleaseCompiledGeometry(Rml::CompiledGeometryHandle geometry) override;
+
+	void EnableScissorRegion(bool enable) override;
+	void SetScissorRegion(int x, int y, int width, int height) override;
+
+	bool LoadTexture(Rml::TextureHandle& texture_handle, Rml::Vector2i& texture_dimensions, const Rml::String& source) override;
+	bool GenerateTexture(Rml::TextureHandle& texture_handle, const Rml::byte* source, const Rml::Vector2i& source_dimensions) override;
+	void ReleaseTexture(Rml::TextureHandle texture_handle) override;
+
+	void SetTransform(const Rml::Matrix4f* transform) override;
+
+	// Can be passed to RenderGeometry() to enable texture rendering without changing the bound texture.
+	static const Rml::TextureHandle TextureEnableWithoutBinding = Rml::TextureHandle(-1);
+
+private:
+	enum class ProgramId { None, Texture = 1, Color = 2, All = (Texture | Color) };
+	void SubmitTransformUniform(ProgramId program_id, int uniform_location);
+
+	Rml::Matrix4f transform, projection;
+	ProgramId transform_dirty_state = ProgramId::All;
+	bool transform_active = false;
+
+	enum class ScissoringState { Disable, Scissor, Stencil };
+	ScissoringState scissoring_state = ScissoringState::Disable;
+
+	int viewport_width = 0;
+	int viewport_height = 0;
+
+	Rml::UniquePtr<Gfx::ShadersData> shaders;
+};
+
+/**
+    Helper functions for the OpenGL 3 renderer.
+ */
+namespace RmlGL3 {
+
+// Loads OpenGL functions. Optionally, the out message describes the loaded GL version or an error message on failure.
+bool Initialize(Rml::String* out_message = nullptr);
+
+// Unloads OpenGL functions.
+void Shutdown();
+
+} // namespace RmlGL3
+
+#endif

CMake/BackendFileList.cmake

@@ -34,6 +34,17 @@ set(SDL_GL2_HDR_FILES
 	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Renderer_GL2.h
 )
 
+set(SDL_GL3_SRC_FILES
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Platform_SDL.cpp
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Renderer_GL3.cpp
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Backend_SDL_GL3.cpp
+)
+set(SDL_GL3_HDR_FILES
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Platform_SDL.h
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Renderer_GL3.h
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Include_GL3.h
+)
+
 set(SDL_SDLrenderer_SRC_FILES
 	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Renderer_SDL.cpp
 	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Platform_SDL.cpp
@@ -63,3 +74,14 @@ set(GLFW_GL2_HDR_FILES
 	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Platform_GLFW.h
 	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Renderer_GL2.h
 )
+
+set(GLFW_GL3_SRC_FILES
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Platform_GLFW.cpp
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Renderer_GL3.cpp
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Backend_GLFW_GL3.cpp
+)
+set(GLFW_GL3_HDR_FILES
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Platform_GLFW.h
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Renderer_GL3.h
+	${PROJECT_SOURCE_DIR}/Backends/RmlUi_Include_GL3.h
+)

CMakeLists.txt

@@ -164,10 +164,12 @@ endif()
 option(BUILD_SAMPLES "Build samples" OFF)
 
 set(SAMPLES_BACKEND "auto" CACHE STRING "Backend platform and renderer used for the samples.")
-set_property(CACHE SAMPLES_BACKEND PROPERTY STRINGS auto Win32_GL2 X11_GL2 SDL_GL2 SDL_SDLrenderer SFML_GL2 GLFW_GL2)
+set_property(CACHE SAMPLES_BACKEND PROPERTY STRINGS auto Win32_GL2 X11_GL2 SDL_GL2 SDL_GL3 SDL_SDLrenderer SFML_GL2 GLFW_GL2 GLFW_GL3)
 
 if(SAMPLES_BACKEND STREQUAL "auto")
-	if(WIN32)
+	if(EMSCRIPTEN)
+		set(SAMPLES_BACKEND SDL_GL3)
+	elseif(WIN32)
 		set(SAMPLES_BACKEND Win32_GL2)
 	elseif(APPLE)
 		set(SAMPLES_BACKEND SDL_SDLrenderer)
@@ -208,6 +210,10 @@ if(WIN32 AND BUILD_SHARED_LIBS AND BUILD_TESTING)
 	message(FATAL_ERROR "-- The RmlUi testing framework cannot be built when using shared libraries on Windows. Please disable either BUILD_SHARED_LIBS or BUILD_TESTING.")
 endif()
 
+if(EMSCRIPTEN AND BUILD_SHARED_LIBS)
+	message(FATAL_ERROR "-- Dynamic libraries not supported when using Emscripten. Please disable BUILD_SHARED_LIBS.")
+endif()
+
 if(NOT BUILD_SHARED_LIBS)
 	list(APPEND CORE_PUBLIC_DEFS -DRMLUI_STATIC_LIB)
 	message("-- Building static libraries. Make sure to #define RMLUI_STATIC_LIB before including RmlUi in your project.")
@@ -335,14 +341,17 @@ include(FileList)
 
 # FreeType
 if(NOT NO_FONT_INTERFACE_DEFAULT)
-	find_package(Freetype REQUIRED)
-	
-	if(MSVC AND FREETYPE_VERSION_STRING STREQUAL "2.11.0")
-		message(WARNING "You are using FreeType version 2.11.0 which introduced an issue that causes a crash on startup on some of the samples. Please avoid this version specifically.")
+	if(EMSCRIPTEN)
+		set(EMSCRIPTEN_FLAGS "${EMSCRIPTEN_FLAGS} -sUSE_FREETYPE=1")
+	else()
+		find_package(Freetype REQUIRED)
+		if(MSVC AND FREETYPE_VERSION_STRING STREQUAL "2.11.0")
+			message(WARNING "You are using FreeType version 2.11.0 which introduced an issue that causes a crash on startup on some of the samples. Please avoid this version specifically.")
+		endif()
+		
+		list(APPEND CORE_LINK_LIBS ${FREETYPE_LIBRARIES})
+		list(APPEND CORE_INCLUDE_DIRS ${FREETYPE_INCLUDE_DIRS})
 	endif()
-	
-	list(APPEND CORE_LINK_LIBS ${FREETYPE_LIBRARIES})
-	list(APPEND CORE_INCLUDE_DIRS ${FREETYPE_INCLUDE_DIRS})
 endif()
 
 # Lua
@@ -676,7 +685,7 @@ if(BUILD_SAMPLES OR BUILD_TESTING)
 		target_link_libraries(shell PRIVATE shlwapi)
 	elseif(APPLE)
 		target_link_libraries(shell PRIVATE "-framework Cocoa")
-	elseif(UNIX AND NOT APPLE)
+	elseif(UNIX AND NOT APPLE AND NOT EMSCRIPTEN)
 		find_package(X11)
 		if (X11_FOUND)
 			message("-- Found X11 library.")
@@ -698,29 +707,33 @@ if(BUILD_SAMPLES OR BUILD_TESTING)
 	
 	if(SAMPLES_BACKEND MATCHES "^SDL")
 		message("-- Looking for SDL2 library for samples backend.")
-		find_package(SDL2 REQUIRED)
-		find_package(SDL2_image REQUIRED)
-		
-		if(NOT SDL2_FOUND)
-			message(FATAL_ERROR "SDL2 not found")
-		elseif(NOT SDL2_IMAGE_FOUND)
-			message(FATAL_ERROR "SDL2_image not found")
-		endif()
-		
-		if(SAMPLES_BACKEND STREQUAL "SDL_GL2")
-			find_package(GLEW REQUIRED)
-			if(NOT GLEW_FOUND)
-				message(FATAL_ERROR "GLEW not found")
+		if(EMSCRIPTEN)
+			set(EMSCRIPTEN_FLAGS "${EMSCRIPTEN_FLAGS} -sUSE_SDL=2 -sUSE_SDL_IMAGE=2 -sSDL2_IMAGE_FORMATS='[tga]'")
+		else()
+			find_package(SDL2 REQUIRED)
+			find_package(SDL2_image REQUIRED)
+			
+			if(NOT SDL2_FOUND)
+				message(FATAL_ERROR "SDL2 not found")
+			elseif(NOT SDL2_IMAGE_FOUND)
+				message(FATAL_ERROR "SDL2_image not found")
 			endif()
+			
+			if(SAMPLES_BACKEND STREQUAL "SDL_GL2")
+				find_package(GLEW REQUIRED)
+				if(NOT GLEW_FOUND)
+					message(FATAL_ERROR "GLEW not found")
+				endif()
+			endif()
+			
+			# Check version requirement for the SDL renderer.
+			if(SAMPLES_BACKEND STREQUAL "SDL_SDLrenderer" AND "${SDL2_VERSION}" VERSION_LESS "2.0.20")
+				message(FATAL_ERROR "SDL2 native renderer backend (${SAMPLES_BACKEND}) requires SDL 2.0.20 (found ${SDL2_VERSION}).")
+			endif()
+			
+			target_include_directories(shell PRIVATE ${SDL2_INCLUDE_DIR} ${SDL2_IMAGE_INCLUDE_DIR} ${GLEW_INCLUDE_DIR})
+			target_link_libraries(shell PRIVATE ${SDL2_LIBRARY} ${SDL2_IMAGE_LIBRARY} ${GLEW_LIBRARIES})
 		endif()
-		
-		# Check version requirement for the SDL renderer.
-		if(SAMPLES_BACKEND STREQUAL "SDL_SDLrenderer" AND "${SDL2_VERSION}" VERSION_LESS "2.0.20")
-			message(FATAL_ERROR "SDL2 native renderer backend (${SAMPLES_BACKEND}) requires SDL 2.0.20 (found ${SDL2_VERSION}).")
-		endif()
-		
-		target_include_directories(shell PRIVATE ${SDL2_INCLUDE_DIR} ${SDL2_IMAGE_INCLUDE_DIR} ${GLEW_INCLUDE_DIR})
-		target_link_libraries(shell PRIVATE ${SDL2_LIBRARY} ${SDL2_IMAGE_LIBRARY} ${GLEW_LIBRARIES})
 	endif()
 	
 	if(SAMPLES_BACKEND MATCHES "^SFML")
@@ -752,6 +765,21 @@ if(BUILD_SAMPLES OR BUILD_TESTING)
 			target_compile_definitions(shell PRIVATE GL_SILENCE_DEPRECATION)
 		endif()
 	endif()
+	
+	if(SAMPLES_BACKEND MATCHES "GL3$")
+		message("-- Adding OpenGL 3 renderer backend.")
+		if(EMSCRIPTEN)
+			set(EMSCRIPTEN_EXE_FLAGS "${EMSCRIPTEN_EXE_FLAGS} -sMAX_WEBGL_VERSION=2")
+		else()
+			find_package(OpenGL REQUIRED)
+			target_include_directories(shell PRIVATE ${OPENGL_INCLUDE_DIR})
+			target_link_libraries(shell PRIVATE ${OPENGL_LIBRARIES} ${CMAKE_DL_LIBS})
+			target_compile_definitions(shell PRIVATE RMLUI_RENDERER_GL3)
+			if(APPLE)
+				target_compile_definitions(shell PRIVATE GL_SILENCE_DEPRECATION)
+			endif()
+		endif()
+	endif()
 endif()
 
 
@@ -803,6 +831,49 @@ if(BUILD_SAMPLES)
 			RUNTIME DESTINATION ${SAMPLES_DIR}/luainvaders
 			BUNDLE DESTINATION ${SAMPLES_DIR})
 	endif()
+	
+	# Add assets to emscripten binaries
+	if(EMSCRIPTEN)
+		message("-- Preloading emscipten sample assets")
+		
+		set(COMMON_ASSET_FOLDER "Samples/assets/")
+		set(EMSCRIPTEN_EXE_FLAGS "${EMSCRIPTEN_EXE_FLAGS} --preload-file ${CMAKE_CURRENT_SOURCE_DIR}/${COMMON_ASSET_FOLDER}@/${COMMON_ASSET_FOLDER}")
+
+		foreach(sample ${samples})
+			set(SAMPLE_DATA_FOLDER "Samples/basic/${sample}/data/")
+			set(ABS_SAMPLE_DATA_FOLDER "${CMAKE_CURRENT_SOURCE_DIR}/${SAMPLE_DATA_FOLDER}")
+			if(EXISTS ${ABS_SAMPLE_DATA_FOLDER})
+				target_link_libraries(${sample} "--preload-file ${ABS_SAMPLE_DATA_FOLDER}@/${SAMPLE_DATA_FOLDER}")
+			endif()
+		endforeach()
+		
+		foreach(tutorial ${tutorials})
+			set(TUTORIAL_DATA_FOLDER "Samples/tutorial/${tutorial}/data/")
+			set(ABS_TUTORIAL_DATA_FOLDER "${CMAKE_CURRENT_SOURCE_DIR}/${TUTORIAL_DATA_FOLDER}")
+			if(EXISTS ${ABS_TUTORIAL_DATA_FOLDER})
+				target_link_libraries("tutorial_${tutorial}" "--preload-file ${ABS_TUTORIAL_DATA_FOLDER}@/${TUTORIAL_DATA_FOLDER}")
+			endif()
+		endforeach()
+		
+		set(INVADER_DATA_FOLDER "Samples/invaders/data/")
+		target_link_libraries(invaders "-sALLOW_MEMORY_GROWTH --preload-file ${CMAKE_CURRENT_SOURCE_DIR}/${INVADER_DATA_FOLDER}@/${INVADER_DATA_FOLDER}")
+	endif()
+endif()
+
+#===================================
+# Add global options ===============
+#===================================
+
+if(EMSCRIPTEN)
+	# Enables Asyncify which we only need since the backend doesn't control the main loop. This enables us to yield to the browser during the backend call to
+	# Backend::ProcessEvents(). Asyncify results in larger and slower code, users are instead encouraged to use 'emscripten_set_main_loop()' and family.
+	set(EMSCRIPTEN_EXE_FLAGS "${EMSCRIPTEN_EXE_FLAGS} -sASYNCIFY")
+	
+	message(STATUS "Compiling for Emscripten.\n\t- Flags:${EMSCRIPTEN_FLAGS}\n\t- ExeFlags:${EMSCRIPTEN_EXE_FLAGS}")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EMSCRIPTEN_FLAGS}")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EMSCRIPTEN_FLAGS}")
+	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${EMSCRIPTEN_FLAGS} ${EMSCRIPTEN_EXE_FLAGS}")
+	set(CMAKE_EXECUTABLE_SUFFIX .html)
 endif()
 
 #===================================

Samples/shell/src/PlatformExtensions.cpp

@@ -108,6 +108,10 @@ Rml::String PlatformExtensions::FindSamplesRoot()
 
 	return executable_path + "../../../" + path;
 
+#elif defined RMLUI_PLATFORM_EMSCRIPTEN
+
+	return Rml::String("Samples/");
+
 #elif defined RMLUI_PLATFORM_UNIX
 
 	char executable_file_name[PATH_MAX];

Tests/CMakeLists.txt

@@ -95,3 +95,16 @@ add_common_target_options(Benchmarks)
 if(MSVC)
 	target_compile_definitions(Benchmarks PUBLIC DOCTEST_CONFIG_USE_STD_HEADERS)
 endif()
+
+
+
+#===================================
+# Emscripten assets ================
+#===================================
+
+if(EMSCRIPTEN)
+	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -sLLD_REPORT_UNDEFINED --preload-file ${CMAKE_CURRENT_SOURCE_DIR}/Data/@/Tests/Data/")
+	
+	# Benchmarks additionally use the benchmark sample data.
+	target_link_libraries(Benchmarks "--preload-file ${CMAKE_CURRENT_SOURCE_DIR}/../Samples/basic/benchmark/data/@/Samples/basic/benchmark/data/")
+endif()