GS: Migrate to glad

pcsx2/CMakeLists.txt

@@ -1447,6 +1447,7 @@ endif()
 
 target_link_libraries(PCSX2_FLAGS INTERFACE
 	common
+	glad
 	fmt::fmt
 	yaml-cpp
 	chdr-static

pcsx2/GS/GS.h

@@ -45,25 +45,13 @@
 #endif
 
 #include "Renderers/OpenGL/GLLoader.h"
-#include "Renderers/OpenGL/PFN_GLLOADER_HPP.h"
 
 #ifdef _WIN32
 
-	// Note use GL/glcorearb.h on the future
-	// Requirements:
-	//	* Update GSWndWGL::GetProcAddress to query 1.0 and 1.1 symbols
-	//	* define all ENABLE_GL_VERSION_1_*
-	#include <GL/wglext.h>
-
 	#define DIRECTORY_SEPARATOR '\\'
 
 #else
 
-	// Note use GL/glcorearb.h on the future
-	// Requirements:
-	//	* Drop GLX that still include gl.h...
-	//	  EGL/OGL status on AMD GPU pro driver is unknown
-	//	* define all ENABLE_GL_VERSION_1_*
 	#include <sys/stat.h> // mkdir
 
 	#define DIRECTORY_SEPARATOR '/'

pcsx2/GS/Renderers/OpenGL/GLLoader.cpp

@@ -17,21 +17,6 @@
 #include "GLLoader.h"
 #include "GS.h"
 
-#ifdef __APPLE__
-#  undef glScissorIndexed
-#  undef glViewportIndexedf
-PFNGLSCISSORINDEXEDPROC   gs_glScissorIndexed   = glScissorIndexed;
-PFNGLVIEWPORTINDEXEDFPROC gs_glViewportIndexedf = glViewportIndexedf;
-#  define glScissorIndexed   gs_glScissorIndexed
-#  define glViewportIndexedf gs_glViewportIndexedf
-#endif
-#ifdef __unix__
-PFNGLBLENDFUNCSEPARATEPROC glBlendFuncSeparate = NULL;
-#endif
-PFNGLTEXTUREPAGECOMMITMENTEXTPROC glTexturePageCommitmentEXT = NULL;
-
-#include "PFN_GLLOADER_CPP.h"
-
 namespace GLExtension
 {
 

pcsx2/GS/Renderers/OpenGL/GLLoader.h

@@ -15,124 +15,12 @@
 
 #pragma once
 
-#ifdef __APPLE__
-	#define GL_SILENCE_DEPRECATION
-	#include <OpenGL/gl3.h>
-#else
-	#include <GL/gl.h>
-	#include <GL/glext.h>
-#endif
-
 #define GL_TEX_LEVEL_0 (0)
 #define GL_TEX_LEVEL_1 (1)
 #define GL_FB_DEFAULT  (0)
 #define GL_BUFFER_0    (0)
 
-#ifndef GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR
-#define GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR 0x00000008
-#endif
-
-/*************************************************************
- * Extra define not provided in glcorearb.h
- * Currently they are included in the legacy glext.h but the plan
- * is to move to core only OpenGL
- ************************************************************/
-
-// Extension not in core profile. It will become irrelevant with sparse texture
-#ifndef GL_TEXTURE_FREE_MEMORY_ATI
-#define GL_TEXTURE_FREE_MEMORY_ATI 0x87FC
-#endif
-#ifndef GL_NVX_gpu_memory_info
-#define GL_NVX_gpu_memory_info 1
-#define GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX 0x9047
-#define GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX 0x9048
-#define GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX 0x9049
-#define GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX 0x904A
-#define GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX 0x904B
-#endif /* GL_NVX_gpu_memory_info */
-
-// Added in GL4.6. Code should be updated but driver support...
-#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT
-#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
-#endif
-
-// **********************  End of the extra header ******************* //
-
-// #define ENABLE_GL_ARB_ES3_2_compatibility 1
-// #define ENABLE_GL_ARB_bindless_texture 1
-// #define ENABLE_GL_ARB_cl_event 1
-// #define ENABLE_GL_ARB_compute_variable_group_size 1
-// #define ENABLE_GL_ARB_debug_output 1
-// #define ENABLE_GL_ARB_draw_buffers_blend 1
-// #define ENABLE_GL_ARB_draw_instanced 1
-// #define ENABLE_GL_ARB_geometry_shader4 1
-// #define ENABLE_GL_ARB_gl_spirv 1
-// #define ENABLE_GL_ARB_gpu_shader_int64 1
-// #define ENABLE_GL_ARB_indirect_parameters 1
-// #define ENABLE_GL_ARB_instanced_arrays 1
-// #define ENABLE_GL_ARB_parallel_shader_compile 1
-// #define ENABLE_GL_ARB_robustness 1
-// #define ENABLE_GL_ARB_sample_locations 1
-// #define ENABLE_GL_ARB_sample_shading 1
-// #define ENABLE_GL_ARB_shading_language_include 1
-// #define ENABLE_GL_ARB_sparse_buffer 1
-#define ENABLE_GL_ARB_sparse_texture 1
-// #define ENABLE_GL_ARB_texture_buffer_object 1
-// #define ENABLE_GL_KHR_blend_equation_advanced 1
-// #define ENABLE_GL_KHR_parallel_shader_compile 1
-
-// Dark age of openGL. GL_10 and GL_11 are provided by opengl32.dll on windows.
-// Linux is a royal mess
-//
-// #define ENABLE_GL_VERSION_1_0 1
-// #define ENABLE_GL_VERSION_1_1 1
-#ifdef _WIN32
-#define ENABLE_GL_VERSION_1_2 1
-#define ENABLE_GL_VERSION_1_3 1
-#define ENABLE_GL_VERSION_1_4 1
-#endif
-
-#ifndef __APPLE__ // macOS provides up to GL 4.1
-#define ENABLE_GL_VERSION_1_5 1
-#define ENABLE_GL_VERSION_2_0 1
-#define ENABLE_GL_VERSION_2_1 1
-#define ENABLE_GL_VERSION_3_0 1
-#define ENABLE_GL_VERSION_3_1 1
-#define ENABLE_GL_VERSION_3_2 1
-#define ENABLE_GL_VERSION_3_3 1
-#define ENABLE_GL_VERSION_4_0 1
-#define ENABLE_GL_VERSION_4_1 1
-#endif
-#define ENABLE_GL_VERSION_4_2 1
-#define ENABLE_GL_VERSION_4_3 1
-#define ENABLE_GL_VERSION_4_4 1
-#define ENABLE_GL_VERSION_4_5 1
-// #define ENABLE_GL_VERSION_4_6 1
-
-// FIX compilation issue with Mesa 10
-#include "glext_extra.h"
-
-// Believe me or not, they forgot to add the interaction with DSA...
-#ifndef GL_EXT_direct_state_access
-typedef void(APIENTRYP PFNGLTEXTUREPAGECOMMITMENTEXTPROC)(GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLboolean commit);
-#endif
-
-#ifdef __APPLE__
-// Apple uses weakly-linked dylibs to provide GL symbols
-// This means that it's possible for a symbol to be null, but not writable by us
-extern PFNGLSCISSORINDEXEDPROC   gs_glScissorIndexed;
-extern PFNGLVIEWPORTINDEXEDFPROC gs_glViewportIndexedf;
-#  define glScissorIndexed   gs_glScissorIndexed
-#  define glViewportIndexedf gs_glViewportIndexedf
-#endif
-
-// It should be done by ENABLE_GL_VERSION_1_4 but it conflicts with the old gl.h
-#ifdef __unix__
-extern PFNGLBLENDFUNCSEPARATEPROC glBlendFuncSeparate;
-#endif
-extern PFNGLTEXTUREPAGECOMMITMENTEXTPROC glTexturePageCommitmentEXT;
-
-#include "PFN_GLLOADER_HPP.h"
+#include "glad.h"
 
 namespace GLExtension
 {