Counter Strike : Global Offensive Source Code
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//============ Copyright (c) Valve Corporation, All rights reserved. ============
//
// glmgrext.h
// helper file for extension testing and runtime importing of entry points
//
//===============================================================================
#pragma once
#include <OpenGL/gl.h>
#include <OpenGL/glext.h>
// #define symbol INSTANTIATE_GL_IMPORTS controls whether the following macro "GL_IMPORT" writes externs or writes decls
// normally only glmgr.cpp sets that symbol and includes this file
// to simplify usage, a function ptr type must exist for every entry point, following the name##FuncPtr convention.
#ifdef INSTANTIATE_GL_IMPORTS
#define GL_IMPORT( name ) name##FuncPtr name = 0
#else
#define GL_IMPORT( name ) extern name##FuncPtr name;
#endif
// before declaring each import, check to see if the EXT symbol is in effect,
// and if so, don't do it!
#ifndef GL_EXT_draw_buffers2
typedef void (* glColorMaskIndexedEXTFuncPtr) (GLuint index, GLboolean r, GLboolean g, GLboolean b, GLboolean a); typedef void (* glEnableIndexedEXTFuncPtr) (GLenum target, GLuint index); typedef void (* glDisableIndexedEXTFuncPtr) (GLenum target, GLuint index);
GL_IMPORT(glColorMaskIndexedEXT); GL_IMPORT(glEnableIndexedEXT); GL_IMPORT(glDisableIndexedEXT);#endif
#ifndef GL_EXT_framebuffer_sRGB
#define GL_FRAMEBUFFER_SRGB_EXT 0x8DB9
#define GL_FRAMEBUFFER_SRGB_CAPABLE_EXT 0x8DBA
#endif
#ifndef ARB_texture_rg
#define GL_COMPRESSED_RED 0x8225
#define GL_COMPRESSED_RG 0x8226
#define GL_RG 0x8227
#define GL_RG_INTEGER 0x8228
#define GL_R8 0x8229
#define GL_R16 0x822A
#define GL_RG8 0x822B
#define GL_RG16 0x822C
#define GL_R16F 0x822D
#define GL_R32F 0x822E
#define GL_RG16F 0x822F
#define GL_RG32F 0x8230
#define GL_R8I 0x8231
#define GL_R8UI 0x8232
#define GL_R16I 0x8233
#define GL_R16UI 0x8234
#define GL_R32I 0x8235
#define GL_R32UI 0x8236
#define GL_RG8I 0x8237
#define GL_RG8UI 0x8238
#define GL_RG16I 0x8239
#define GL_RG16UI 0x823A
#define GL_RG32I 0x823B
#define GL_RG32UI 0x823C
#define GL_RGB10_A2UI_ARB 0x906F
#endif
#ifndef GL_EXT_bindable_uniform
#define GL_UNIFORM_BUFFER_EXT 0x8DEE
#endif
// unpublished extension enums (thus the "X")
// from EXT_framebuffer_multisample_blit_scaled..
#define XGL_SCALED_RESOLVE_FASTEST_EXT 0x90BA
#define XGL_SCALED_RESOLVE_NICEST_EXT 0x90BB
void * NSGLGetProcAddress (const char *name);
// call this to find all the entry points.
void GLMSetupExtensions( void );
typedef void (*PFNglColorMaskIndexedEXT)(GLuint index, GLboolean r, GLboolean g, GLboolean b, GLboolean a);typedef void (*PFNglEnableIndexedEXT)(GLenum target, GLuint index);typedef void (*PFNglDisableIndexedEXT)(GLenum target, GLuint index);typedef void (*PFNglUniformBufferEXT)(GLuint program, GLint location, GLuint buffer);
extern PFNglColorMaskIndexedEXT pfnglColorMaskIndexedEXT;extern PFNglEnableIndexedEXT pfnglEnableIndexedEXT;extern PFNglDisableIndexedEXT pfnglDisableIndexedEXT;extern PFNglUniformBufferEXT pfnglUniformBufferEXT;
typedef void (*PFNglGetFramebufferAttachmentParameteriv)(GLenum target, GLenum attachment, GLenum pname, GLint *params);extern PFNglGetFramebufferAttachmentParameteriv pfnglGetFramebufferAttachmentParameteriv;
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