/**
 * @file llglheaders.h
 * @brief LLGL definitions
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLGLHEADERS_H
#define LL_LLGLHEADERS_H

#if LL_MESA
//----------------------------------------------------------------------------
// MESA headers
// quotes so we get libraries/.../GL/ version
#define GL_GLEXT_PROTOTYPES 1
#include "GL/gl.h"
#include "GL/glext.h"
#include "GL/glu.h"

// The __APPLE__ kludge is to make glh_extensions.h not symbol-clash horribly
# define __APPLE__
# include "GL/glh_extensions.h"
# undef __APPLE__

#elif LL_LINUX
//----------------------------------------------------------------------------
// LL_LINUX

//----------------------------------------------------------------------------
// Linux, MESA headers, but not necessarily assuming MESA runtime.
// quotes so we get libraries/.../GL/ version
#include "GL/gl.h"
#include "GL/glext.h"
#include "GL/glu.h"


#if LL_LINUX && !LL_MESA_HEADLESS
// The __APPLE__ kludge is to make glh_extensions.h not symbol-clash horribly
# define __APPLE__
# include "GL/glh_extensions.h"
# undef __APPLE__

/* Although SDL very likely ends up calling glXGetProcAddress() itself,
   if we use SDL_GL_GetProcAddress() then we get bogus addresses back on
   some systems.  Weird. */
/*# include "SDL/SDL.h"
  # define GLH_EXT_GET_PROC_ADDRESS(p) SDL_GL_GetProcAddress(p) */
#define GLX_GLXEXT_PROTOTYPES 1
# include "GL/glx.h"
# include "GL/glxext.h"
// Use glXGetProcAddressARB instead of glXGetProcAddress - the ARB symbol
// is considered 'legacy' but works on more machines.
# define GLH_EXT_GET_PROC_ADDRESS(p) glXGetProcAddressARB((const GLubyte*)(p))
#endif // LL_LINUX && !LL_MESA_HEADLESS

#if LL_LINUX && defined(WINGDIAPI)
// WINGDIAPI gets set if we are using the linux nvidia gl.h header which needs
// the functions below setting up.
# define LL_LINUX_NV_GL_HEADERS 1
#else
# define LL_LINUX_NV_GL_HEADERS 0
#endif // LL_LINUX && defined(WINGDIAPI)


#if LL_LINUX_NV_GL_HEADERS
// Missing functions when using nvidia headers:
extern PFNGLACTIVETEXTUREARBPROC	glActiveTextureARB;
extern PFNGLCLIENTACTIVETEXTUREARBPROC	glClientActiveTextureARB;
extern PFNGLDRAWRANGEELEMENTSPROC 	glDrawRangeElements;
#endif // LL_LINUX_NV_GL_HEADERS

// GL_ARB_vertex_array_object
extern PFNGLBINDVERTEXARRAYPROC glBindVertexArray;
extern PFNGLDELETEVERTEXARRAYSPROC glDeleteVertexArrays;
extern PFNGLGENVERTEXARRAYSPROC glGenVertexArrays;
extern PFNGLISVERTEXARRAYPROC glIsVertexArray;

// GL_ARB_vertex_buffer_object
extern PFNGLBINDBUFFERARBPROC		glBindBufferARB;
extern PFNGLDELETEBUFFERSARBPROC	glDeleteBuffersARB;
extern PFNGLGENBUFFERSARBPROC		glGenBuffersARB;
extern PFNGLISBUFFERARBPROC			glIsBufferARB;
extern PFNGLBUFFERDATAARBPROC		glBufferDataARB;
extern PFNGLBUFFERSUBDATAARBPROC	glBufferSubDataARB;
extern PFNGLGETBUFFERSUBDATAARBPROC glGetBufferSubDataARB;
extern PFNGLMAPBUFFERARBPROC		glMapBufferARB;
extern PFNGLUNMAPBUFFERARBPROC		glUnmapBufferARB;
extern PFNGLGETBUFFERPARAMETERIVARBPROC	glGetBufferParameterivARB;
extern PFNGLGETBUFFERPOINTERVARBPROC	glGetBufferPointervARB;

// GL_ARB_sync
extern PFNGLFENCESYNCPROC				glFenceSync;
extern PFNGLISSYNCPROC					glIsSync;
extern PFNGLDELETESYNCPROC				glDeleteSync;
extern PFNGLCLIENTWAITSYNCPROC			glClientWaitSync;
extern PFNGLWAITSYNCPROC				glWaitSync;
extern PFNGLGETINTEGER64VPROC			glGetInteger64v;
extern PFNGLGETSYNCIVPROC				glGetSynciv;

// GL_APPLE_flush_buffer_range
extern PFNGLBUFFERPARAMETERIAPPLEPROC	glBufferParameteriAPPLE;
extern PFNGLFLUSHMAPPEDBUFFERRANGEAPPLEPROC glFlushMappedBufferRangeAPPLE;

// GL_ARB_map_buffer_range
extern PFNGLMAPBUFFERRANGEPROC			glMapBufferRange;
extern PFNGLFLUSHMAPPEDBUFFERRANGEPROC	glFlushMappedBufferRange;

// GL_ATI_vertex_array_object
extern PFNGLNEWOBJECTBUFFERATIPROC			glNewObjectBufferATI;
extern PFNGLISOBJECTBUFFERATIPROC			glIsObjectBufferATI;
extern PFNGLUPDATEOBJECTBUFFERATIPROC		glUpdateObjectBufferATI;
extern PFNGLGETOBJECTBUFFERFVATIPROC		glGetObjectBufferfvATI;
extern PFNGLGETOBJECTBUFFERIVATIPROC		glGetObjectBufferivATI;
extern PFNGLFREEOBJECTBUFFERATIPROC		    glFreeObjectBufferATI;
extern PFNGLARRAYOBJECTATIPROC				glArrayObjectATI;
extern PFNGLVERTEXATTRIBARRAYOBJECTATIPROC	glVertexAttribArrayObjectATI;
extern PFNGLGETARRAYOBJECTFVATIPROC			glGetArrayObjectfvATI;
extern PFNGLGETARRAYOBJECTIVATIPROC			glGetArrayObjectivATI;
extern PFNGLVARIANTARRAYOBJECTATIPROC		glVariantObjectArrayATI;
extern PFNGLGETVARIANTARRAYOBJECTFVATIPROC	glGetVariantArrayObjectfvATI;
extern PFNGLGETVARIANTARRAYOBJECTIVATIPROC	glGetVariantArrayObjectivATI;

// GL_ARB_occlusion_query
extern PFNGLGENQUERIESARBPROC glGenQueriesARB;
extern PFNGLDELETEQUERIESARBPROC glDeleteQueriesARB;
extern PFNGLISQUERYARBPROC glIsQueryARB;
extern PFNGLBEGINQUERYARBPROC glBeginQueryARB;
extern PFNGLENDQUERYARBPROC glEndQueryARB;
extern PFNGLGETQUERYIVARBPROC glGetQueryivARB;
extern PFNGLGETQUERYOBJECTIVARBPROC glGetQueryObjectivARB;
extern PFNGLGETQUERYOBJECTUIVARBPROC glGetQueryObjectuivARB;

// GL_ARB_timer_query
extern PFNGLQUERYCOUNTERPROC glQueryCounter;
extern PFNGLGETQUERYOBJECTI64VPROC glGetQueryObjecti64v;
extern PFNGLGETQUERYOBJECTUI64VPROC glGetQueryObjectui64v;

// GL_ARB_point_parameters
extern PFNGLPOINTPARAMETERFARBPROC glPointParameterfARB;
extern PFNGLPOINTPARAMETERFVARBPROC glPointParameterfvARB;

// GL_ARB_shader_objects
extern PFNGLDELETEOBJECTARBPROC glDeleteObjectARB;
extern PFNGLGETHANDLEARBPROC glGetHandleARB;
extern PFNGLDETACHOBJECTARBPROC glDetachObjectARB;
extern PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
extern PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
extern PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
extern PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
extern PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
extern PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
extern PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
extern PFNGLVALIDATEPROGRAMARBPROC glValidateProgramARB;
extern PFNGLUNIFORM1FARBPROC glUniform1fARB;
extern PFNGLUNIFORM2FARBPROC glUniform2fARB;
extern PFNGLUNIFORM3FARBPROC glUniform3fARB;
extern PFNGLUNIFORM4FARBPROC glUniform4fARB;
extern PFNGLUNIFORM1IARBPROC glUniform1iARB;
extern PFNGLUNIFORM2IARBPROC glUniform2iARB;
extern PFNGLUNIFORM3IARBPROC glUniform3iARB;
extern PFNGLUNIFORM4IARBPROC glUniform4iARB;
extern PFNGLUNIFORM1FVARBPROC glUniform1fvARB;
extern PFNGLUNIFORM2FVARBPROC glUniform2fvARB;
extern PFNGLUNIFORM3FVARBPROC glUniform3fvARB;
extern PFNGLUNIFORM4FVARBPROC glUniform4fvARB;
extern PFNGLUNIFORM1IVARBPROC glUniform1ivARB;
extern PFNGLUNIFORM2IVARBPROC glUniform2ivARB;
extern PFNGLUNIFORM3IVARBPROC glUniform3ivARB;
extern PFNGLUNIFORM4IVARBPROC glUniform4ivARB;
extern PFNGLUNIFORMMATRIX2FVARBPROC glUniformMatrix2fvARB;
extern PFNGLUNIFORMMATRIX3FVARBPROC glUniformMatrix3fvARB;
extern PFNGLUNIFORMMATRIX3X4FVPROC glUniformMatrix3x4fv;
extern PFNGLUNIFORMMATRIX4FVARBPROC glUniformMatrix4fvARB;
extern PFNGLGETOBJECTPARAMETERFVARBPROC glGetObjectParameterfvARB;
extern PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
extern PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
extern PFNGLGETATTACHEDOBJECTSARBPROC glGetAttachedObjectsARB;
extern PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
extern PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniformARB;
extern PFNGLGETUNIFORMFVARBPROC glGetUniformfvARB;
extern PFNGLGETUNIFORMIVARBPROC glGetUniformivARB;
extern PFNGLGETSHADERSOURCEARBPROC glGetShaderSourceARB;

// GL_ARB_vertex_shader
extern PFNGLVERTEXATTRIB1DARBPROC glVertexAttrib1dARB;
extern PFNGLVERTEXATTRIB1DVARBPROC glVertexAttrib1dvARB;
extern PFNGLVERTEXATTRIB1FARBPROC glVertexAttrib1fARB;
extern PFNGLVERTEXATTRIB1FVARBPROC glVertexAttrib1fvARB;
extern PFNGLVERTEXATTRIB1SARBPROC glVertexAttrib1sARB;
extern PFNGLVERTEXATTRIB1SVARBPROC glVertexAttrib1svARB;
extern PFNGLVERTEXATTRIB2DARBPROC glVertexAttrib2dARB;
extern PFNGLVERTEXATTRIB2DVARBPROC glVertexAttrib2dvARB;
extern PFNGLVERTEXATTRIB2FARBPROC glVertexAttrib2fARB;
extern PFNGLVERTEXATTRIB2FVARBPROC glVertexAttrib2fvARB;
extern PFNGLVERTEXATTRIB2SARBPROC glVertexAttrib2sARB;
extern PFNGLVERTEXATTRIB2SVARBPROC glVertexAttrib2svARB;
extern PFNGLVERTEXATTRIB3DARBPROC glVertexAttrib3dARB;
extern PFNGLVERTEXATTRIB3DVARBPROC glVertexAttrib3dvARB;
extern PFNGLVERTEXATTRIB3FARBPROC glVertexAttrib3fARB;
extern PFNGLVERTEXATTRIB3FVARBPROC glVertexAttrib3fvARB;
extern PFNGLVERTEXATTRIB3SARBPROC glVertexAttrib3sARB;
extern PFNGLVERTEXATTRIB3SVARBPROC glVertexAttrib3svARB;
extern PFNGLVERTEXATTRIB4NBVARBPROC glVertexAttrib4nbvARB;
extern PFNGLVERTEXATTRIB4NIVARBPROC glVertexAttrib4nivARB;
extern PFNGLVERTEXATTRIB4NSVARBPROC glVertexAttrib4nsvARB;
extern PFNGLVERTEXATTRIB4NUBARBPROC glVertexAttrib4nubARB;
extern PFNGLVERTEXATTRIB4NUBVARBPROC glVertexAttrib4nubvARB;
extern PFNGLVERTEXATTRIB4NUIVARBPROC glVertexAttrib4nuivARB;
extern PFNGLVERTEXATTRIB4NUSVARBPROC glVertexAttrib4nusvARB;
extern PFNGLVERTEXATTRIB4BVARBPROC glVertexAttrib4bvARB;
extern PFNGLVERTEXATTRIB4DARBPROC glVertexAttrib4dARB;
extern PFNGLVERTEXATTRIB4DVARBPROC glVertexAttrib4dvARB;
extern PFNGLVERTEXATTRIB4FARBPROC glVertexAttrib4fARB;
extern PFNGLVERTEXATTRIB4FVARBPROC glVertexAttrib4fvARB;
extern PFNGLVERTEXATTRIB4IVARBPROC glVertexAttrib4ivARB;
extern PFNGLVERTEXATTRIB4SARBPROC glVertexAttrib4sARB;
extern PFNGLVERTEXATTRIB4SVARBPROC glVertexAttrib4svARB;
extern PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubvARB;
extern PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uivARB;
extern PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usvARB;
extern PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
extern PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
extern PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
extern PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
extern PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
extern PFNGLBINDPROGRAMARBPROC glBindProgramARB;
extern PFNGLDELETEPROGRAMSARBPROC glDeleteProgramsARB;
extern PFNGLGENPROGRAMSARBPROC glGenProgramsARB;
extern PFNGLPROGRAMENVPARAMETER4DARBPROC glProgramEnvParameter4dARB;
extern PFNGLPROGRAMENVPARAMETER4DVARBPROC glProgramEnvParameter4dvARB;
extern PFNGLPROGRAMENVPARAMETER4FARBPROC glProgramEnvParameter4fARB;
extern PFNGLPROGRAMENVPARAMETER4FVARBPROC glProgramEnvParameter4fvARB;
extern PFNGLPROGRAMLOCALPARAMETER4DARBPROC glProgramLocalParameter4dARB;
extern PFNGLPROGRAMLOCALPARAMETER4DVARBPROC glProgramLocalParameter4dvARB;
extern PFNGLPROGRAMLOCALPARAMETER4FARBPROC glProgramLocalParameter4fARB;
extern PFNGLPROGRAMLOCALPARAMETER4FVARBPROC glProgramLocalParameter4fvARB;
extern PFNGLGETPROGRAMENVPARAMETERDVARBPROC glGetProgramEnvParameterdvARB;
extern PFNGLGETPROGRAMENVPARAMETERFVARBPROC glGetProgramEnvParameterfvARB;
extern PFNGLGETPROGRAMLOCALPARAMETERDVARBPROC glGetProgramLocalParameterdvARB;
extern PFNGLGETPROGRAMLOCALPARAMETERFVARBPROC glGetProgramLocalParameterfvARB;
extern PFNGLGETPROGRAMIVARBPROC glGetProgramivARB;
extern PFNGLGETPROGRAMSTRINGARBPROC glGetProgramStringARB;
extern PFNGLGETVERTEXATTRIBDVARBPROC glGetVertexAttribdvARB;
extern PFNGLGETVERTEXATTRIBFVARBPROC glGetVertexAttribfvARB;
extern PFNGLGETVERTEXATTRIBIVARBPROC glGetVertexAttribivARB;
extern PFNGLGETVERTEXATTRIBPOINTERVARBPROC glGetVertexAttribPointervARB;
extern PFNGLISPROGRAMARBPROC glIsProgramARB;
extern PFNGLBINDATTRIBLOCATIONARBPROC glBindAttribLocationARB;
extern PFNGLGETACTIVEATTRIBARBPROC glGetActiveAttribARB;
extern PFNGLGETATTRIBLOCATIONARBPROC glGetAttribLocationARB;

extern PFNGLCOMPRESSEDTEXIMAGE2DARBPROC glCompressedTexImage2DARB;
extern PFNGLGETCOMPRESSEDTEXIMAGEARBPROC glGetCompressedTexImageARB;

//GL_EXT_blend_func_separate
extern PFNGLBLENDFUNCSEPARATEEXTPROC glBlendFuncSeparateEXT;

//GL_ARB_framebuffer_object
extern PFNGLISRENDERBUFFERPROC glIsRenderbuffer;
extern PFNGLBINDRENDERBUFFERPROC glBindRenderbuffer;
extern PFNGLDELETERENDERBUFFERSPROC glDeleteRenderbuffers;
extern PFNGLGENRENDERBUFFERSPROC glGenRenderbuffers;
extern PFNGLRENDERBUFFERSTORAGEPROC glRenderbufferStorage;
extern PFNGLGETRENDERBUFFERPARAMETERIVPROC glGetRenderbufferParameteriv;
extern PFNGLISFRAMEBUFFERPROC glIsFramebuffer;
extern PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer;
extern PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers;
extern PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers;
extern PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus;
extern PFNGLFRAMEBUFFERTEXTURE1DPROC glFramebufferTexture1D;
extern PFNGLFRAMEBUFFERTEXTURE2DPROC glFramebufferTexture2D;
extern PFNGLFRAMEBUFFERTEXTURE3DPROC glFramebufferTexture3D;
extern PFNGLFRAMEBUFFERRENDERBUFFERPROC glFramebufferRenderbuffer;
extern PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glGetFramebufferAttachmentParameteriv;
extern PFNGLGENERATEMIPMAPPROC glGenerateMipmap;
extern PFNGLBLITFRAMEBUFFERPROC glBlitFramebuffer;
extern PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC glRenderbufferStorageMultisample;
extern PFNGLFRAMEBUFFERTEXTURELAYERPROC glFramebufferTextureLayer;

//GL_ARB_draw_buffers
extern PFNGLDRAWBUFFERSARBPROC glDrawBuffersARB;

//GL_ARB_texture_multisample
extern PFNGLTEXIMAGE2DMULTISAMPLEPROC glTexImage2DMultisample;
extern PFNGLTEXIMAGE3DMULTISAMPLEPROC glTexImage3DMultisample;
extern PFNGLGETMULTISAMPLEFVPROC glGetMultisamplefv;
extern PFNGLSAMPLEMASKIPROC glSampleMaski;

//transform feedback (4.0 core)
extern PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback;
extern PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback;
extern PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings;
extern PFNGLBINDBUFFERRANGEPROC glBindBufferRange;
extern PFNGLBINDBUFFERBASEPROC glBindBufferBase;


#elif LL_WINDOWS
//----------------------------------------------------------------------------
// LL_WINDOWS

// windows gl headers depend on things like APIENTRY, so include windows.
#include "llwin32headerslean.h"

//----------------------------------------------------------------------------
#include <GL/gl.h>
#include <GL/glu.h>

// quotes so we get libraries/.../GL/ version
#include "GL/glext.h"
#include "GL/glh_extensions.h"

// WGL_ARB_create_context
extern PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB;
extern PFNGLGETSTRINGIPROC glGetStringi;

// GL_ARB_vertex_buffer_object
extern PFNGLBINDBUFFERARBPROC		glBindBufferARB;
extern PFNGLDELETEBUFFERSARBPROC	glDeleteBuffersARB;
extern PFNGLGENBUFFERSARBPROC		glGenBuffersARB;
extern PFNGLISBUFFERARBPROC			glIsBufferARB;
extern PFNGLBUFFERDATAARBPROC		glBufferDataARB;
extern PFNGLBUFFERSUBDATAARBPROC	glBufferSubDataARB;
extern PFNGLGETBUFFERSUBDATAARBPROC glGetBufferSubDataARB;
extern PFNGLMAPBUFFERARBPROC		glMapBufferARB;
extern PFNGLUNMAPBUFFERARBPROC		glUnmapBufferARB;
extern PFNGLGETBUFFERPARAMETERIVARBPROC	glGetBufferParameterivARB;
extern PFNGLGETBUFFERPOINTERVARBPROC	glGetBufferPointervARB;

// GL_ARB_vertex_array_object
extern PFNGLBINDVERTEXARRAYPROC glBindVertexArray;
extern PFNGLDELETEVERTEXARRAYSPROC glDeleteVertexArrays;
extern PFNGLGENVERTEXARRAYSPROC glGenVertexArrays;
extern PFNGLISVERTEXARRAYPROC glIsVertexArray;

// GL_ARB_sync
extern PFNGLFENCESYNCPROC				glFenceSync;
extern PFNGLISSYNCPROC					glIsSync;
extern PFNGLDELETESYNCPROC				glDeleteSync;
extern PFNGLCLIENTWAITSYNCPROC			glClientWaitSync;
extern PFNGLWAITSYNCPROC				glWaitSync;
extern PFNGLGETINTEGER64VPROC			glGetInteger64v;
extern PFNGLGETSYNCIVPROC				glGetSynciv;

// GL_APPLE_flush_buffer_range
extern PFNGLBUFFERPARAMETERIAPPLEPROC	glBufferParameteriAPPLE;
extern PFNGLFLUSHMAPPEDBUFFERRANGEAPPLEPROC glFlushMappedBufferRangeAPPLE;

// GL_ARB_map_buffer_range
extern PFNGLMAPBUFFERRANGEPROC			glMapBufferRange;
extern PFNGLFLUSHMAPPEDBUFFERRANGEPROC	glFlushMappedBufferRange;

// GL_ATI_vertex_array_object
extern PFNGLNEWOBJECTBUFFERATIPROC			glNewObjectBufferATI;
extern PFNGLISOBJECTBUFFERATIPROC			glIsObjectBufferATI;
extern PFNGLUPDATEOBJECTBUFFERATIPROC		glUpdateObjectBufferATI;
extern PFNGLGETOBJECTBUFFERFVATIPROC		glGetObjectBufferfvATI;
extern PFNGLGETOBJECTBUFFERIVATIPROC		glGetObjectBufferivATI;
extern PFNGLFREEOBJECTBUFFERATIPROC		    glFreeObjectBufferATI;
extern PFNGLARRAYOBJECTATIPROC				glArrayObjectATI;
extern PFNGLVERTEXATTRIBARRAYOBJECTATIPROC	glVertexAttribArrayObjectATI;
extern PFNGLGETARRAYOBJECTFVATIPROC			glGetArrayObjectfvATI;
extern PFNGLGETARRAYOBJECTIVATIPROC			glGetArrayObjectivATI;
extern PFNGLVARIANTARRAYOBJECTATIPROC		glVariantObjectArrayATI;
extern PFNGLGETVARIANTARRAYOBJECTFVATIPROC	glGetVariantArrayObjectfvATI;
extern PFNGLGETVARIANTARRAYOBJECTIVATIPROC	glGetVariantArrayObjectivATI;

extern PFNWGLGETGPUIDSAMDPROC				wglGetGPUIDsAMD;
extern PFNWGLGETGPUINFOAMDPROC				wglGetGPUInfoAMD;
extern PFNWGLSWAPINTERVALEXTPROC			wglSwapIntervalEXT;

// GL_ARB_occlusion_query
extern PFNGLGENQUERIESARBPROC glGenQueriesARB;
extern PFNGLDELETEQUERIESARBPROC glDeleteQueriesARB;
extern PFNGLISQUERYARBPROC glIsQueryARB;
extern PFNGLBEGINQUERYARBPROC glBeginQueryARB;
extern PFNGLENDQUERYARBPROC glEndQueryARB;
extern PFNGLGETQUERYIVARBPROC glGetQueryivARB;
extern PFNGLGETQUERYOBJECTIVARBPROC glGetQueryObjectivARB;
extern PFNGLGETQUERYOBJECTUIVARBPROC glGetQueryObjectuivARB;

// GL_ARB_timer_query
extern PFNGLQUERYCOUNTERPROC glQueryCounter;
extern PFNGLGETQUERYOBJECTI64VPROC glGetQueryObjecti64v;
extern PFNGLGETQUERYOBJECTUI64VPROC glGetQueryObjectui64v;


// GL_ARB_point_parameters
extern PFNGLPOINTPARAMETERFARBPROC glPointParameterfARB;
extern PFNGLPOINTPARAMETERFVARBPROC glPointParameterfvARB;

// GL_ARB_shader_objects
extern PFNGLDELETEOBJECTARBPROC glDeleteObjectARB;
extern PFNGLGETHANDLEARBPROC glGetHandleARB;
extern PFNGLDETACHOBJECTARBPROC glDetachObjectARB;
extern PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
extern PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
extern PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
extern PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
extern PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
extern PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
extern PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
extern PFNGLVALIDATEPROGRAMARBPROC glValidateProgramARB;
extern PFNGLUNIFORM1FARBPROC glUniform1fARB;
extern PFNGLUNIFORM2FARBPROC glUniform2fARB;
extern PFNGLUNIFORM3FARBPROC glUniform3fARB;
extern PFNGLUNIFORM4FARBPROC glUniform4fARB;
extern PFNGLUNIFORM1IARBPROC glUniform1iARB;
extern PFNGLUNIFORM2IARBPROC glUniform2iARB;
extern PFNGLUNIFORM3IARBPROC glUniform3iARB;
extern PFNGLUNIFORM4IARBPROC glUniform4iARB;
extern PFNGLUNIFORM1FVARBPROC glUniform1fvARB;
extern PFNGLUNIFORM2FVARBPROC glUniform2fvARB;
extern PFNGLUNIFORM3FVARBPROC glUniform3fvARB;
extern PFNGLUNIFORM4FVARBPROC glUniform4fvARB;
extern PFNGLUNIFORM1IVARBPROC glUniform1ivARB;
extern PFNGLUNIFORM2IVARBPROC glUniform2ivARB;
extern PFNGLUNIFORM3IVARBPROC glUniform3ivARB;
extern PFNGLUNIFORM4IVARBPROC glUniform4ivARB;
extern PFNGLUNIFORMMATRIX2FVARBPROC glUniformMatrix2fvARB;
extern PFNGLUNIFORMMATRIX3FVARBPROC glUniformMatrix3fvARB;
extern PFNGLUNIFORMMATRIX3X4FVPROC glUniformMatrix3x4fv;
extern PFNGLUNIFORMMATRIX4FVARBPROC glUniformMatrix4fvARB;
extern PFNGLGETOBJECTPARAMETERFVARBPROC glGetObjectParameterfvARB;
extern PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
extern PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
extern PFNGLGETATTACHEDOBJECTSARBPROC glGetAttachedObjectsARB;
extern PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
extern PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniformARB;
extern PFNGLGETUNIFORMFVARBPROC glGetUniformfvARB;
extern PFNGLGETUNIFORMIVARBPROC glGetUniformivARB;
extern PFNGLGETSHADERSOURCEARBPROC glGetShaderSourceARB;

// GL_ARB_vertex_shader
extern PFNGLVERTEXATTRIB1DARBPROC glVertexAttrib1dARB;
extern PFNGLVERTEXATTRIB1DVARBPROC glVertexAttrib1dvARB;
extern PFNGLVERTEXATTRIB1FARBPROC glVertexAttrib1fARB;
extern PFNGLVERTEXATTRIB1FVARBPROC glVertexAttrib1fvARB;
extern PFNGLVERTEXATTRIB1SARBPROC glVertexAttrib1sARB;
extern PFNGLVERTEXATTRIB1SVARBPROC glVertexAttrib1svARB;
extern PFNGLVERTEXATTRIB2DARBPROC glVertexAttrib2dARB;
extern PFNGLVERTEXATTRIB2DVARBPROC glVertexAttrib2dvARB;
extern PFNGLVERTEXATTRIB2FARBPROC glVertexAttrib2fARB;
extern PFNGLVERTEXATTRIB2FVARBPROC glVertexAttrib2fvARB;
extern PFNGLVERTEXATTRIB2SARBPROC glVertexAttrib2sARB;
extern PFNGLVERTEXATTRIB2SVARBPROC glVertexAttrib2svARB;
extern PFNGLVERTEXATTRIB3DARBPROC glVertexAttrib3dARB;
extern PFNGLVERTEXATTRIB3DVARBPROC glVertexAttrib3dvARB;
extern PFNGLVERTEXATTRIB3FARBPROC glVertexAttrib3fARB;
extern PFNGLVERTEXATTRIB3FVARBPROC glVertexAttrib3fvARB;
extern PFNGLVERTEXATTRIB3SARBPROC glVertexAttrib3sARB;
extern PFNGLVERTEXATTRIB3SVARBPROC glVertexAttrib3svARB;
extern PFNGLVERTEXATTRIB4NBVARBPROC glVertexAttrib4nbvARB;
extern PFNGLVERTEXATTRIB4NIVARBPROC glVertexAttrib4nivARB;
extern PFNGLVERTEXATTRIB4NSVARBPROC glVertexAttrib4nsvARB;
extern PFNGLVERTEXATTRIB4NUBARBPROC glVertexAttrib4nubARB;
extern PFNGLVERTEXATTRIB4NUBVARBPROC glVertexAttrib4nubvARB;
extern PFNGLVERTEXATTRIB4NUIVARBPROC glVertexAttrib4nuivARB;
extern PFNGLVERTEXATTRIB4NUSVARBPROC glVertexAttrib4nusvARB;
extern PFNGLVERTEXATTRIB4BVARBPROC glVertexAttrib4bvARB;
extern PFNGLVERTEXATTRIB4DARBPROC glVertexAttrib4dARB;
extern PFNGLVERTEXATTRIB4DVARBPROC glVertexAttrib4dvARB;
extern PFNGLVERTEXATTRIB4FARBPROC glVertexAttrib4fARB;
extern PFNGLVERTEXATTRIB4FVARBPROC glVertexAttrib4fvARB;
extern PFNGLVERTEXATTRIB4IVARBPROC glVertexAttrib4ivARB;
extern PFNGLVERTEXATTRIB4SARBPROC glVertexAttrib4sARB;
extern PFNGLVERTEXATTRIB4SVARBPROC glVertexAttrib4svARB;
extern PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubvARB;
extern PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uivARB;
extern PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usvARB;
extern PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
extern PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
extern PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
extern PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
extern PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
extern PFNGLBINDPROGRAMARBPROC glBindProgramARB;
extern PFNGLDELETEPROGRAMSARBPROC glDeleteProgramsARB;
extern PFNGLGENPROGRAMSARBPROC glGenProgramsARB;
extern PFNGLPROGRAMENVPARAMETER4DARBPROC glProgramEnvParameter4dARB;
extern PFNGLPROGRAMENVPARAMETER4DVARBPROC glProgramEnvParameter4dvARB;
extern PFNGLPROGRAMENVPARAMETER4FARBPROC glProgramEnvParameter4fARB;
extern PFNGLPROGRAMENVPARAMETER4FVARBPROC glProgramEnvParameter4fvARB;
extern PFNGLPROGRAMLOCALPARAMETER4DARBPROC glProgramLocalParameter4dARB;
extern PFNGLPROGRAMLOCALPARAMETER4DVARBPROC glProgramLocalParameter4dvARB;
extern PFNGLPROGRAMLOCALPARAMETER4FARBPROC glProgramLocalParameter4fARB;
extern PFNGLPROGRAMLOCALPARAMETER4FVARBPROC glProgramLocalParameter4fvARB;
extern PFNGLGETPROGRAMENVPARAMETERDVARBPROC glGetProgramEnvParameterdvARB;
extern PFNGLGETPROGRAMENVPARAMETERFVARBPROC glGetProgramEnvParameterfvARB;
extern PFNGLGETPROGRAMLOCALPARAMETERDVARBPROC glGetProgramLocalParameterdvARB;
extern PFNGLGETPROGRAMLOCALPARAMETERFVARBPROC glGetProgramLocalParameterfvARB;
extern PFNGLGETPROGRAMIVARBPROC glGetProgramivARB;
extern PFNGLGETPROGRAMSTRINGARBPROC glGetProgramStringARB;
extern PFNGLGETVERTEXATTRIBDVARBPROC glGetVertexAttribdvARB;
extern PFNGLGETVERTEXATTRIBFVARBPROC glGetVertexAttribfvARB;
extern PFNGLGETVERTEXATTRIBIVARBPROC glGetVertexAttribivARB;
extern PFNGLGETVERTEXATTRIBPOINTERVARBPROC glGetVertexAttribPointervARB;
extern PFNGLISPROGRAMARBPROC glIsProgramARB;
extern PFNGLBINDATTRIBLOCATIONARBPROC glBindAttribLocationARB;
extern PFNGLGETACTIVEATTRIBARBPROC glGetActiveAttribARB;
extern PFNGLGETATTRIBLOCATIONARBPROC glGetAttribLocationARB;

//GL_EXT_blend_func_separate
extern PFNGLBLENDFUNCSEPARATEEXTPROC glBlendFuncSeparateEXT;

//GL_ARB_framebuffer_object
extern PFNGLISRENDERBUFFERPROC glIsRenderbuffer;
extern PFNGLBINDRENDERBUFFERPROC glBindRenderbuffer;
extern PFNGLDELETERENDERBUFFERSPROC glDeleteRenderbuffers;
extern PFNGLGENRENDERBUFFERSPROC glGenRenderbuffers;
extern PFNGLRENDERBUFFERSTORAGEPROC glRenderbufferStorage;
extern PFNGLGETRENDERBUFFERPARAMETERIVPROC glGetRenderbufferParameteriv;
extern PFNGLISFRAMEBUFFERPROC glIsFramebuffer;
extern PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer;
extern PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers;
extern PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers;
extern PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus;
extern PFNGLFRAMEBUFFERTEXTURE1DPROC glFramebufferTexture1D;
extern PFNGLFRAMEBUFFERTEXTURE2DPROC glFramebufferTexture2D;
extern PFNGLFRAMEBUFFERTEXTURE3DPROC glFramebufferTexture3D;
extern PFNGLFRAMEBUFFERRENDERBUFFERPROC glFramebufferRenderbuffer;
extern PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glGetFramebufferAttachmentParameteriv;
extern PFNGLGENERATEMIPMAPPROC glGenerateMipmap;
extern PFNGLBLITFRAMEBUFFERPROC glBlitFramebuffer;
extern PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC glRenderbufferStorageMultisample;
extern PFNGLFRAMEBUFFERTEXTURELAYERPROC glFramebufferTextureLayer;

//GL_ARB_draw_buffers
extern PFNGLDRAWBUFFERSARBPROC glDrawBuffersARB;

//GL_ARB_texture_multisample
extern PFNGLTEXIMAGE2DMULTISAMPLEPROC glTexImage2DMultisample;
extern PFNGLTEXIMAGE3DMULTISAMPLEPROC glTexImage3DMultisample;
extern PFNGLGETMULTISAMPLEFVPROC glGetMultisamplefv;
extern PFNGLSAMPLEMASKIPROC glSampleMaski;

//transform feedback (4.0 core)
extern PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback;
extern PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback;
extern PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings;
extern PFNGLBINDBUFFERRANGEPROC glBindBufferRange;
extern PFNGLBINDBUFFERBASEPROC glBindBufferBase;

//GL_ARB_debug_output
extern PFNGLDEBUGMESSAGECONTROLARBPROC glDebugMessageControlARB;
extern PFNGLDEBUGMESSAGEINSERTARBPROC glDebugMessageInsertARB;
extern PFNGLDEBUGMESSAGECALLBACKARBPROC glDebugMessageCallbackARB;
extern PFNGLGETDEBUGMESSAGELOGARBPROC glGetDebugMessageLogARB;

#elif LL_DARWIN
//----------------------------------------------------------------------------
// LL_DARWIN

#include <OpenGL/gl.h>
#include <OpenGL/glu.h>

#define GL_EXT_separate_specular_color 1
#include <OpenGL/glext.h>

#include "GL/glh_extensions.h"

// These symbols don't exist on 10.3.9, so they have to be declared weak.  Redeclaring them here fixes the problem.
// Note that they also must not be called on 10.3.9.  This should be taken care of by a runtime check for the existence of the GL extension.
#include <AvailabilityMacros.h>

// <FS:ND> Workaround to get a OSX version to compile (until someone with a Mac makes including gl3.h work)
#ifndef GL_TEXTURE_RECTANGLE
  #define GL_TEXTURE_RECTANGLE GL_TEXTURE_RECTANGLE_ARB
#endif
// </FS:ND>

//GL_EXT_blend_func_separate
extern void glBlendFuncSeparateEXT(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha) ;

// GL_EXT_framebuffer_object
extern GLboolean glIsRenderbufferEXT(GLuint renderbuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glBindRenderbufferEXT(GLenum target, GLuint renderbuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glDeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glGenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glRenderbufferStorageEXT(GLenum target, GLenum internalformat, GLsizei width, GLsizei height) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glGetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern GLboolean glIsFramebufferEXT(GLuint framebuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glBindFramebufferEXT(GLenum target, GLuint framebuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glDeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glGenFramebuffersEXT(GLsizei n, GLuint *framebuffers) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern GLenum glCheckFramebufferStatusEXT(GLenum target) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glFramebufferTexture1DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glFramebufferTexture2DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glFramebufferTexture3DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glFramebufferRenderbufferEXT(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glGetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment, GLenum pname, GLint *params) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
extern void glGenerateMipmapEXT(GLenum target) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;

#ifndef GL_ARB_framebuffer_object
#define glGenerateMipmap glGenerateMipmapEXT
#define GL_MAX_SAMPLES	0x8D57
#endif

// GL_ARB_draw_buffers
extern void glDrawBuffersARB(GLsizei n, const GLenum* bufs) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;

#ifdef __cplusplus
extern "C" {
#endif

//
// Define map buffer range headers on Mac
//
#ifndef GL_ARB_map_buffer_range
#define GL_MAP_READ_BIT                   0x0001
#define GL_MAP_WRITE_BIT                  0x0002
#define GL_MAP_INVALIDATE_RANGE_BIT       0x0004
#define GL_MAP_INVALIDATE_BUFFER_BIT      0x0008
#define GL_MAP_FLUSH_EXPLICIT_BIT         0x0010
#define GL_MAP_UNSYNCHRONIZED_BIT         0x0020
#endif

//
// Define multisample headers on Mac
//
#ifndef GL_ARB_texture_multisample
#define GL_SAMPLE_POSITION                0x8E50
#define GL_SAMPLE_MASK                    0x8E51
#define GL_SAMPLE_MASK_VALUE              0x8E52
#define GL_MAX_SAMPLE_MASK_WORDS          0x8E59
#define GL_TEXTURE_2D_MULTISAMPLE         0x9100
#define GL_PROXY_TEXTURE_2D_MULTISAMPLE   0x9101
#define GL_TEXTURE_2D_MULTISAMPLE_ARRAY   0x9102
#define GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY 0x9103
#define GL_TEXTURE_BINDING_2D_MULTISAMPLE 0x9104
#define GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY 0x9105
#define GL_TEXTURE_SAMPLES                0x9106
#define GL_TEXTURE_FIXED_SAMPLE_LOCATIONS 0x9107
#define GL_SAMPLER_2D_MULTISAMPLE         0x9108
#define GL_INT_SAMPLER_2D_MULTISAMPLE     0x9109
#define GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE 0x910A
#define GL_SAMPLER_2D_MULTISAMPLE_ARRAY   0x910B
#define GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY 0x910C
#define GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY 0x910D
#define GL_MAX_COLOR_TEXTURE_SAMPLES      0x910E
#define GL_MAX_DEPTH_TEXTURE_SAMPLES      0x910F
#define GL_MAX_INTEGER_SAMPLES            0x9110
#endif

//
// Define vertex buffer object headers on Mac
//
#ifndef GL_ARB_vertex_buffer_object
#define GL_BUFFER_SIZE_ARB                0x8764
#define GL_BUFFER_USAGE_ARB               0x8765
#define GL_ARRAY_BUFFER_ARB               0x8892
#define GL_ELEMENT_ARRAY_BUFFER_ARB       0x8893
#define GL_ARRAY_BUFFER_BINDING_ARB       0x8894
#define GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB 0x8895
#define GL_VERTEX_ARRAY_BUFFER_BINDING_ARB 0x8896
#define GL_NORMAL_ARRAY_BUFFER_BINDING_ARB 0x8897
#define GL_COLOR_ARRAY_BUFFER_BINDING_ARB 0x8898
#define GL_INDEX_ARRAY_BUFFER_BINDING_ARB 0x8899
#define GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB 0x889A
#define GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB 0x889B
#define GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB 0x889C
#define GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB 0x889D
#define GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB 0x889E
#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB 0x889F
#define GL_READ_ONLY_ARB                  0x88B8
#define GL_WRITE_ONLY_ARB                 0x88B9
#define GL_READ_WRITE_ARB                 0x88BA
#define GL_BUFFER_ACCESS_ARB              0x88BB
#define GL_BUFFER_MAPPED_ARB              0x88BC
#define GL_BUFFER_MAP_POINTER_ARB         0x88BD
#define GL_STREAM_DRAW_ARB                0x88E0
#define GL_STREAM_READ_ARB                0x88E1
#define GL_STREAM_COPY_ARB                0x88E2
#define GL_STATIC_DRAW_ARB                0x88E4
#define GL_STATIC_READ_ARB                0x88E5
#define GL_STATIC_COPY_ARB                0x88E6
#define GL_DYNAMIC_DRAW_ARB               0x88E8
#define GL_DYNAMIC_READ_ARB               0x88E9
#define GL_DYNAMIC_COPY_ARB               0x88EA
#endif
	


#ifndef GL_ARB_vertex_buffer_object
/* GL types for handling large vertex buffer objects */
typedef intptr_t GLintptrARB;
typedef intptr_t GLsizeiptrARB;
#endif


#ifndef GL_ARB_vertex_buffer_object
#define GL_ARB_vertex_buffer_object 1
#ifdef GL_GLEXT_FUNCTION_POINTERS
typedef void (* glBindBufferARBProcPtr) (GLenum target, GLuint buffer);
typedef void (* glDeleteBufferARBProcPtr) (GLsizei n, const GLuint *buffers);
typedef void (* glGenBuffersARBProcPtr) (GLsizei n, GLuint *buffers);
typedef GLboolean (* glIsBufferARBProcPtr) (GLuint buffer);
typedef void (* glBufferDataARBProcPtr) (GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage);
typedef void (* glBufferSubDataARBProcPtr) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data);
typedef void (* glGetBufferSubDataARBProcPtr) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, GLvoid *data);
typedef GLvoid* (* glMapBufferARBProcPtr) (GLenum target, GLenum access);	/* Flawfinder: ignore */
typedef GLboolean (* glUnmapBufferARBProcPtr) (GLenum target);
typedef void (* glGetBufferParameterivARBProcPtr) (GLenum target, GLenum pname, GLint *params);
typedef void (* glGetBufferPointervARBProcPtr) (GLenum target, GLenum pname, GLvoid* *params);
#else
extern void glBindBufferARB (GLenum, GLuint);
extern void glDeleteBuffersARB (GLsizei, const GLuint *);
extern void glGenBuffersARB (GLsizei, GLuint *);
extern GLboolean glIsBufferARB (GLuint);
extern void glBufferDataARB (GLenum, GLsizeiptrARB, const GLvoid *, GLenum);
extern void glBufferSubDataARB (GLenum, GLintptrARB, GLsizeiptrARB, const GLvoid *);
extern void glGetBufferSubDataARB (GLenum, GLintptrARB, GLsizeiptrARB, GLvoid *);
extern GLvoid* glMapBufferARB (GLenum, GLenum);
extern GLboolean glUnmapBufferARB (GLenum);
extern void glGetBufferParameterivARB (GLenum, GLenum, GLint *);
extern void glGetBufferPointervARB (GLenum, GLenum, GLvoid* *);
#endif /* GL_GLEXT_FUNCTION_POINTERS */
#endif

#ifndef GL_ARB_texture_rg
#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
#endif

// May be needed for DARWIN...
// #ifndef GL_ARB_compressed_tex_image
// #define GL_ARB_compressed_tex_image 1
// #ifdef GL_GLEXT_FUNCTION_POINTERS
// typedef void (* glCompressedTexImage1D) (GLenum, GLint, GLenum, GLsizei, GLint, GLsizei, const GLvoid*);
// typedef void (* glCompressedTexImage2D) (GLenum, GLint, GLenum, GLsizei, GLsizei, GLint, GLsizei, const GLvoid*);
// typedef void (* glCompressedTexImage3D) (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLsizei, const GLvoid*);
// typedef void (* glCompressedTexSubImage1D) (GLenum, GLint, GLint, GLsizei, GLenum, GLsizei, const GLvoid*);
// typedef void (* glCompressedTexSubImage2D) (GLenum, GLint, GLint, GLint, GLsizei, GLsizei, GLenum, GLsizei, const GLvoid*);
// typedef void (* glCompressedTexSubImage3D) (GLenum, GLint, GLint, GLint, GLint, GLsizei, GLsizei, GLsizei, GLenum, GLsizei, const GLvoid*);
// typedef void (* glGetCompressedTexImage) (GLenum, GLint, GLvoid*);
// #else
// extern void glCompressedTexImage1D (GLenum, GLint, GLenum, GLsizei, GLint, GLsizei, const GLvoid*);
// extern void glCompressedTexImage2D (GLenum, GLint, GLenum, GLsizei, GLsizei, GLint, GLsizei, const GLvoid*);
// extern void glCompressedTexImage3D (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLsizei, const GLvoid*);
// extern void glCompressedTexSubImage1D (GLenum, GLint, GLint, GLsizei, GLenum, GLsizei, const GLvoid*);
// extern void glCompressedTexSubImage2D (GLenum, GLint, GLint, GLint, GLsizei, GLsizei, GLenum, GLsizei, const GLvoid*);
// extern void glCompressedTexSubImage3D (GLenum, GLint, GLint, GLint, GLint, GLsizei, GLsizei, GLsizei, GLenum, GLsizei, const GLvoid*);
// extern void glGetCompressedTexImage (GLenum, GLint, GLvoid*);
// #endif /* GL_GLEXT_FUNCTION_POINTERS */
// #endif

#ifdef __cplusplus
}
#endif

#include <OpenGL/gl.h>

#endif // LL_MESA / LL_WINDOWS / LL_DARWIN

// Even when GL_ARB_depth_clamp is available in the driver, the (correct)
// headers, and therefore GL_DEPTH_CLAMP might not be defined.
// In that case GL_DEPTH_CLAMP_NV should be defined, but why not just
// use the known numeric.
//
// To avoid #ifdef's in the code. Just define this here.
#ifndef GL_DEPTH_CLAMP
// Probably (still) called GL_DEPTH_CLAMP_NV.
#define GL_DEPTH_CLAMP 0x864F
#endif

//GL_NVX_gpu_memory_info constants
#ifndef GL_NVX_gpu_memory_info
#define GL_NVX_gpu_memory_info
#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_ATI_meminfo constants
#ifndef GL_ATI_meminfo
#define GL_ATI_meminfo
#define GL_VBO_FREE_MEMORY_ATI                     0x87FB
#define GL_TEXTURE_FREE_MEMORY_ATI                 0x87FC
#define GL_RENDERBUFFER_FREE_MEMORY_ATI            0x87FD
#endif

#if defined(TRACY_ENABLE) && LL_PROFILER_ENABLE_TRACY_OPENGL
    // Tracy uses the following:
    //    glGenQueries
    //    glGetQueryiv
    //    glGetQueryObjectiv
    #define glGenQueries        glGenQueriesARB
    #define glGetQueryiv        glGetQueryivARB
    #define glGetQueryObjectiv  glGetQueryObjectivARB
    #include <tracy/TracyOpenGL.hpp>

    #define LL_PROFILER_GPU_ZONEC(name,color) TracyGpuZoneC(name,color);
    #define LL_PROFILER_GPU_COLLECT           TracyGpuCollect
    #define LL_PROFILER_GPU_CONTEXT           TracyGpuContext
#else
    #define LL_PROFILER_GPU_ZONEC(name,color) (void)name;(void)color;
    #define LL_PROFILER_GPU_COLLECT
    #define LL_PROFILER_GPU_CONTEXT
#endif

#endif // LL_LLGLHEADERS_H
