/ResInsight-2018.01.1/Fwk/VizFwk/LibRender/glew/glew.c

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/*
** The OpenGL Extension Wrangler Library
** Copyright (C) 2002-2008, Milan Ikits <milan ikits[]ieee org>
** Copyright (C) 2002-2008, Marcelo E. Magallon <mmagallo[]debian org>
** Copyright (C) 2002, Lev Povalahev
** All rights reserved.
** 
** Redistribution and use in source and binary forms, with or without 
** modification, are permitted provided that the following conditions are met:
** 
** * Redistributions of source code must retain the above copyright notice, 
**   this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright notice, 
**   this list of conditions and the following disclaimer in the documentation 
**   and/or other materials provided with the distribution.
** * The name of the author may be used to endorse or promote products 
**   derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
** LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
** INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
** CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
** ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
** THE POSSIBILITY OF SUCH DAMAGE.
*/

// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// CeetronModification:
// Note that we have changed from system includes <> to project includes "" here
// This pertains to the three includes below
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#include "GL/glew.h"
#if defined(_WIN32)
#  include "GL/wglew.h"
#elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
#  include "GL/glxew.h"
#endif

/*
 * Define glewGetContext and related helper macros.
 */
#ifdef GLEW_MX
#  define glewGetContext() ctx
#  ifdef _WIN32
#    define GLEW_CONTEXT_ARG_DEF_INIT GLEWContext* ctx
#    define GLEW_CONTEXT_ARG_VAR_INIT ctx
#    define wglewGetContext() ctx
#    define WGLEW_CONTEXT_ARG_DEF_INIT WGLEWContext* ctx
#    define WGLEW_CONTEXT_ARG_DEF_LIST WGLEWContext* ctx
#  else /* _WIN32 */
#    define GLEW_CONTEXT_ARG_DEF_INIT void
#    define GLEW_CONTEXT_ARG_VAR_INIT
#    define glxewGetContext() ctx
#    define GLXEW_CONTEXT_ARG_DEF_INIT void
#    define GLXEW_CONTEXT_ARG_DEF_LIST GLXEWContext* ctx
#  endif /* _WIN32 */
#  define GLEW_CONTEXT_ARG_DEF_LIST GLEWContext* ctx
#else /* GLEW_MX */
#  define GLEW_CONTEXT_ARG_DEF_INIT void
#  define GLEW_CONTEXT_ARG_VAR_INIT
#  define GLEW_CONTEXT_ARG_DEF_LIST void
#  define WGLEW_CONTEXT_ARG_DEF_INIT void
#  define WGLEW_CONTEXT_ARG_DEF_LIST void
#  define GLXEW_CONTEXT_ARG_DEF_INIT void
#  define GLXEW_CONTEXT_ARG_DEF_LIST void
#endif /* GLEW_MX */

#if defined(__sgi) || defined (__sun) || defined(GLEW_APPLE_GLX)
#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>

void* dlGetProcAddress (const GLubyte* name)
{
  static void* h = NULL;
  static void* gpa;

  if (h == NULL)
  {
    if ((h = dlopen(NULL, RTLD_LAZY | RTLD_LOCAL)) == NULL) return NULL;
    gpa = dlsym(h, "glXGetProcAddress");
  }

  if (gpa != NULL)
    return ((void*(*)(const GLubyte*))gpa)(name);
  else
    return dlsym(h, (const char*)name);
}
#endif /* __sgi || __sun || GLEW_APPLE_GLX */

#if defined(__APPLE__)
#include <stdlib.h>
#include <string.h>
#include <AvailabilityMacros.h>

#ifdef MAC_OS_X_VERSION_10_3

#include <dlfcn.h>

void* NSGLGetProcAddress (const GLubyte *name)
{
  static void* image = NULL;
  if (NULL == image) 
  {
    image = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
  }
  if( !image ) return NULL;
  void* addr = dlsym(image, (const char*)name);
  if( addr ) return addr;
#ifdef GLEW_APPLE_GLX
  return dlGetProcAddress( name ); // try next for glx symbols
#else
  return NULL;
#endif
}
#else

#include <mach-o/dyld.h>

void* NSGLGetProcAddress (const GLubyte *name)
{
  static const struct mach_header* image = NULL;
  NSSymbol symbol;
  char* symbolName;
  if (NULL == image)
  {
    image = NSAddImage("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", NSADDIMAGE_OPTION_RETURN_ON_ERROR);
  }
  /* prepend a '_' for the Unix C symbol mangling convention */
  symbolName = malloc(strlen((const char*)name) + 2);
  strcpy(symbolName+1, (const char*)name);
  symbolName[0] = '_';
  symbol = NULL;
  /* if (NSIsSymbolNameDefined(symbolName))
	 symbol = NSLookupAndBindSymbol(symbolName); */
  symbol = image ? NSLookupSymbolInImage(image, symbolName, NSLOOKUPSYMBOLINIMAGE_OPTION_BIND | NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR) : NULL;
  free(symbolName);
  if( symbol ) return NSAddressOfSymbol(symbol);
#ifdef GLEW_APPLE_GLX
  return dlGetProcAddress( name ); // try next for glx symbols
#else
  return NULL;
#endif
}
#endif /* MAC_OS_X_VERSION_10_3 */
#endif /* __APPLE__ */

/*
 * Define glewGetProcAddress.
 */
#if defined(_WIN32)
#  define glewGetProcAddress(name) wglGetProcAddress((LPCSTR)name)
#else
#  if defined(__APPLE__)
#    define glewGetProcAddress(name) NSGLGetProcAddress(name)
#  else
#    if defined(__sgi) || defined(__sun)
#      define glewGetProcAddress(name) dlGetProcAddress(name)
#    else /* __linux */
#      define glewGetProcAddress(name) (*glXGetProcAddressARB)(name)
#    endif
#  endif
#endif

/*
 * Define GLboolean const cast.
 */
#define CONST_CAST(x) (*(GLboolean*)&x)

/*
 * GLEW, just like OpenGL or GLU, does not rely on the standard C library.
 * These functions implement the functionality required in this file.
 */
static GLuint _glewStrLen (const GLubyte* s)
{
  GLuint i=0;
  if (s == NULL) return 0;
  while (s[i] != '\0') i++;
  return i;
}

static GLuint _glewStrCLen (const GLubyte* s, GLubyte c)
{
  GLuint i=0;
  if (s == NULL) return 0;
  while (s[i] != '\0' && s[i] != c) i++;
  return (s[i] == '\0' || s[i] == c) ? i : 0;
}

static GLboolean _glewStrSame (const GLubyte* a, const GLubyte* b, GLuint n)
{
  GLuint i=0;
  if(a == NULL || b == NULL)
    return (a == NULL && b == NULL && n == 0) ? GL_TRUE : GL_FALSE;
  while (i < n && a[i] != '\0' && b[i] != '\0' && a[i] == b[i]) i++;
  return i == n ? GL_TRUE : GL_FALSE;
}

static GLboolean _glewStrSame1 (GLubyte** a, GLuint* na, const GLubyte* b, GLuint nb)
{
  while (*na > 0 && (**a == ' ' || **a == '\n' || **a == '\r' || **a == '\t'))
  {
    (*a)++;
    (*na)--;
  }
  if(*na >= nb)
  {
    GLuint i=0;
    while (i < nb && (*a)+i != NULL && b+i != NULL && (*a)[i] == b[i]) i++;
    if(i == nb)
    {
      *a = *a + nb;
      *na = *na - nb;
      return GL_TRUE;
    }
  }
  return GL_FALSE;
}

static GLboolean _glewStrSame2 (GLubyte** a, GLuint* na, const GLubyte* b, GLuint nb)
{
  if(*na >= nb)
  {
    GLuint i=0;
    while (i < nb && (*a)+i != NULL && b+i != NULL && (*a)[i] == b[i]) i++;
    if(i == nb)
    {
      *a = *a + nb;
      *na = *na - nb;
      return GL_TRUE;
    }
  }
  return GL_FALSE;
}

static GLboolean _glewStrSame3 (GLubyte** a, GLuint* na, const GLubyte* b, GLuint nb)
{
  if(*na >= nb)
  {
    GLuint i=0;
    while (i < nb && (*a)+i != NULL && b+i != NULL && (*a)[i] == b[i]) i++;
    if (i == nb && (*na == nb || (*a)[i] == ' ' || (*a)[i] == '\n' || (*a)[i] == '\r' || (*a)[i] == '\t'))
    {
      *a = *a + nb;
      *na = *na - nb;
      return GL_TRUE;
    }
  }
  return GL_FALSE;
}

/*
 * Search for name in the extensions string. Use of strstr()
 * is not sufficient because extension names can be prefixes of
 * other extension names. Could use strtok() but the constant
 * string returned by glGetString might be in read-only memory.
 */
static GLboolean _glewSearchExtension (const char* name, const GLubyte *start, const GLubyte *end)
{
  const GLubyte* p;
  GLuint len = _glewStrLen((const GLubyte*)name);
  p = start;
  while (p < end)
  {
    GLuint n = _glewStrCLen(p, ' ');
    if (len == n && _glewStrSame((const GLubyte*)name, p, n)) return GL_TRUE;
    p += n+1;
  }
  return GL_FALSE;
}

#if !defined(_WIN32) || !defined(GLEW_MX)

PFNGLCOPYTEXSUBIMAGE3DPROC __glewCopyTexSubImage3D = NULL;
PFNGLDRAWRANGEELEMENTSPROC __glewDrawRangeElements = NULL;
PFNGLTEXIMAGE3DPROC __glewTexImage3D = NULL;
PFNGLTEXSUBIMAGE3DPROC __glewTexSubImage3D = NULL;

PFNGLACTIVETEXTUREPROC __glewActiveTexture = NULL;
PFNGLCLIENTACTIVETEXTUREPROC __glewClientActiveTexture = NULL;
PFNGLCOMPRESSEDTEXIMAGE1DPROC __glewCompressedTexImage1D = NULL;
PFNGLCOMPRESSEDTEXIMAGE2DPROC __glewCompressedTexImage2D = NULL;
PFNGLCOMPRESSEDTEXIMAGE3DPROC __glewCompressedTexImage3D = NULL;
PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC __glewCompressedTexSubImage1D = NULL;
PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC __glewCompressedTexSubImage2D = NULL;
PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC __glewCompressedTexSubImage3D = NULL;
PFNGLGETCOMPRESSEDTEXIMAGEPROC __glewGetCompressedTexImage = NULL;
PFNGLLOADTRANSPOSEMATRIXDPROC __glewLoadTransposeMatrixd = NULL;
PFNGLLOADTRANSPOSEMATRIXFPROC __glewLoadTransposeMatrixf = NULL;
PFNGLMULTTRANSPOSEMATRIXDPROC __glewMultTransposeMatrixd = NULL;
PFNGLMULTTRANSPOSEMATRIXFPROC __glewMultTransposeMatrixf = NULL;
PFNGLMULTITEXCOORD1DPROC __glewMultiTexCoord1d = NULL;
PFNGLMULTITEXCOORD1DVPROC __glewMultiTexCoord1dv = NULL;
PFNGLMULTITEXCOORD1FPROC __glewMultiTexCoord1f = NULL;
PFNGLMULTITEXCOORD1FVPROC __glewMultiTexCoord1fv = NULL;
PFNGLMULTITEXCOORD1IPROC __glewMultiTexCoord1i = NULL;
PFNGLMULTITEXCOORD1IVPROC __glewMultiTexCoord1iv = NULL;
PFNGLMULTITEXCOORD1SPROC __glewMultiTexCoord1s = NULL;
PFNGLMULTITEXCOORD1SVPROC __glewMultiTexCoord1sv = NULL;
PFNGLMULTITEXCOORD2DPROC __glewMultiTexCoord2d = NULL;
PFNGLMULTITEXCOORD2DVPROC __glewMultiTexCoord2dv = NULL;
PFNGLMULTITEXCOORD2FPROC __glewMultiTexCoord2f = NULL;
PFNGLMULTITEXCOORD2FVPROC __glewMultiTexCoord2fv = NULL;
PFNGLMULTITEXCOORD2IPROC __glewMultiTexCoord2i = NULL;
PFNGLMULTITEXCOORD2IVPROC __glewMultiTexCoord2iv = NULL;
PFNGLMULTITEXCOORD2SPROC __glewMultiTexCoord2s = NULL;
PFNGLMULTITEXCOORD2SVPROC __glewMultiTexCoord2sv = NULL;
PFNGLMULTITEXCOORD3DPROC __glewMultiTexCoord3d = NULL;
PFNGLMULTITEXCOORD3DVPROC __glewMultiTexCoord3dv = NULL;
PFNGLMULTITEXCOORD3FPROC __glewMultiTexCoord3f = NULL;
PFNGLMULTITEXCOORD3FVPROC __glewMultiTexCoord3fv = NULL;
PFNGLMULTITEXCOORD3IPROC __glewMultiTexCoord3i = NULL;
PFNGLMULTITEXCOORD3IVPROC __glewMultiTexCoord3iv = NULL;
PFNGLMULTITEXCOORD3SPROC __glewMultiTexCoord3s = NULL;
PFNGLMULTITEXCOORD3SVPROC __glewMultiTexCoord3sv = NULL;
PFNGLMULTITEXCOORD4DPROC __glewMultiTexCoord4d = NULL;
PFNGLMULTITEXCOORD4DVPROC __glewMultiTexCoord4dv = NULL;
PFNGLMULTITEXCOORD4FPROC __glewMultiTexCoord4f = NULL;
PFNGLMULTITEXCOORD4FVPROC __glewMultiTexCoord4fv = NULL;
PFNGLMULTITEXCOORD4IPROC __glewMultiTexCoord4i = NULL;
PFNGLMULTITEXCOORD4IVPROC __glewMultiTexCoord4iv = NULL;
PFNGLMULTITEXCOORD4SPROC __glewMultiTexCoord4s = NULL;
PFNGLMULTITEXCOORD4SVPROC __glewMultiTexCoord4sv = NULL;
PFNGLSAMPLECOVERAGEPROC __glewSampleCoverage = NULL;

PFNGLBLENDCOLORPROC __glewBlendColor = NULL;
PFNGLBLENDEQUATIONPROC __glewBlendEquation = NULL;
PFNGLBLENDFUNCSEPARATEPROC __glewBlendFuncSeparate = NULL;
PFNGLFOGCOORDPOINTERPROC __glewFogCoordPointer = NULL;
PFNGLFOGCOORDDPROC __glewFogCoordd = NULL;
PFNGLFOGCOORDDVPROC __glewFogCoorddv = NULL;
PFNGLFOGCOORDFPROC __glewFogCoordf = NULL;
PFNGLFOGCOORDFVPROC __glewFogCoordfv = NULL;
PFNGLMULTIDRAWARRAYSPROC __glewMultiDrawArrays = NULL;
PFNGLMULTIDRAWELEMENTSPROC __glewMultiDrawElements = NULL;
PFNGLPOINTPARAMETERFPROC __glewPointParameterf = NULL;
PFNGLPOINTPARAMETERFVPROC __glewPointParameterfv = NULL;
PFNGLPOINTPARAMETERIPROC __glewPointParameteri = NULL;
PFNGLPOINTPARAMETERIVPROC __glewPointParameteriv = NULL;
PFNGLSECONDARYCOLOR3BPROC __glewSecondaryColor3b = NULL;
PFNGLSECONDARYCOLOR3BVPROC __glewSecondaryColor3bv = NULL;
PFNGLSECONDARYCOLOR3DPROC __glewSecondaryColor3d = NULL;
PFNGLSECONDARYCOLOR3DVPROC __glewSecondaryColor3dv = NULL;
PFNGLSECONDARYCOLOR3FPROC __glewSecondaryColor3f = NULL;
PFNGLSECONDARYCOLOR3FVPROC __glewSecondaryColor3fv = NULL;
PFNGLSECONDARYCOLOR3IPROC __glewSecondaryColor3i = NULL;
PFNGLSECONDARYCOLOR3IVPROC __glewSecondaryColor3iv = NULL;
PFNGLSECONDARYCOLOR3SPROC __glewSecondaryColor3s = NULL;
PFNGLSECONDARYCOLOR3SVPROC __glewSecondaryColor3sv = NULL;
PFNGLSECONDARYCOLOR3UBPROC __glewSecondaryColor3ub = NULL;
PFNGLSECONDARYCOLOR3UBVPROC __glewSecondaryColor3ubv = NULL;
PFNGLSECONDARYCOLOR3UIPROC __glewSecondaryColor3ui = NULL;
PFNGLSECONDARYCOLOR3UIVPROC __glewSecondaryColor3uiv = NULL;
PFNGLSECONDARYCOLOR3USPROC __glewSecondaryColor3us = NULL;
PFNGLSECONDARYCOLOR3USVPROC __glewSecondaryColor3usv = NULL;
PFNGLSECONDARYCOLORPOINTERPROC __glewSecondaryColorPointer = NULL;
PFNGLWINDOWPOS2DPROC __glewWindowPos2d = NULL;
PFNGLWINDOWPOS2DVPROC __glewWindowPos2dv = NULL;
PFNGLWINDOWPOS2FPROC __glewWindowPos2f = NULL;
PFNGLWINDOWPOS2FVPROC __glewWindowPos2fv = NULL;
PFNGLWINDOWPOS2IPROC __glewWindowPos2i = NULL;
PFNGLWINDOWPOS2IVPROC __glewWindowPos2iv = NULL;
PFNGLWINDOWPOS2SPROC __glewWindowPos2s = NULL;
PFNGLWINDOWPOS2SVPROC __glewWindowPos2sv = NULL;
PFNGLWINDOWPOS3DPROC __glewWindowPos3d = NULL;
PFNGLWINDOWPOS3DVPROC __glewWindowPos3dv = NULL;
PFNGLWINDOWPOS3FPROC __glewWindowPos3f = NULL;
PFNGLWINDOWPOS3FVPROC __glewWindowPos3fv = NULL;
PFNGLWINDOWPOS3IPROC __glewWindowPos3i = NULL;
PFNGLWINDOWPOS3IVPROC __glewWindowPos3iv = NULL;
PFNGLWINDOWPOS3SPROC __glewWindowPos3s = NULL;
PFNGLWINDOWPOS3SVPROC __glewWindowPos3sv = NULL;

PFNGLBEGINQUERYPROC __glewBeginQuery = NULL;
PFNGLBINDBUFFERPROC __glewBindBuffer = NULL;
PFNGLBUFFERDATAPROC __glewBufferData = NULL;
PFNGLBUFFERSUBDATAPROC __glewBufferSubData = NULL;
PFNGLDELETEBUFFERSPROC __glewDeleteBuffers = NULL;
PFNGLDELETEQUERIESPROC __glewDeleteQueries = NULL;
PFNGLENDQUERYPROC __glewEndQuery = NULL;
PFNGLGENBUFFERSPROC __glewGenBuffers = NULL;
PFNGLGENQUERIESPROC __glewGenQueries = NULL;
PFNGLGETBUFFERPARAMETERIVPROC __glewGetBufferParameteriv = NULL;
PFNGLGETBUFFERPOINTERVPROC __glewGetBufferPointerv = NULL;
PFNGLGETBUFFERSUBDATAPROC __glewGetBufferSubData = NULL;
PFNGLGETQUERYOBJECTIVPROC __glewGetQueryObjectiv = NULL;
PFNGLGETQUERYOBJECTUIVPROC __glewGetQueryObjectuiv = NULL;
PFNGLGETQUERYIVPROC __glewGetQueryiv = NULL;
PFNGLISBUFFERPROC __glewIsBuffer = NULL;
PFNGLISQUERYPROC __glewIsQuery = NULL;
PFNGLMAPBUFFERPROC __glewMapBuffer = NULL;
PFNGLUNMAPBUFFERPROC __glewUnmapBuffer = NULL;

PFNGLATTACHSHADERPROC __glewAttachShader = NULL;
PFNGLBINDATTRIBLOCATIONPROC __glewBindAttribLocation = NULL;
PFNGLBLENDEQUATIONSEPARATEPROC __glewBlendEquationSeparate = NULL;
PFNGLCOMPILESHADERPROC __glewCompileShader = NULL;
PFNGLCREATEPROGRAMPROC __glewCreateProgram = NULL;
PFNGLCREATESHADERPROC __glewCreateShader = NULL;
PFNGLDELETEPROGRAMPROC __glewDeleteProgram = NULL;
PFNGLDELETESHADERPROC __glewDeleteShader = NULL;
PFNGLDETACHSHADERPROC __glewDetachShader = NULL;
PFNGLDISABLEVERTEXATTRIBARRAYPROC __glewDisableVertexAttribArray = NULL;
PFNGLDRAWBUFFERSPROC __glewDrawBuffers = NULL;
PFNGLENABLEVERTEXATTRIBARRAYPROC __glewEnableVertexAttribArray = NULL;
PFNGLGETACTIVEATTRIBPROC __glewGetActiveAttrib = NULL;
PFNGLGETACTIVEUNIFORMPROC __glewGetActiveUniform = NULL;
PFNGLGETATTACHEDSHADERSPROC __glewGetAttachedShaders = NULL;
PFNGLGETATTRIBLOCATIONPROC __glewGetAttribLocation = NULL;
PFNGLGETPROGRAMINFOLOGPROC __glewGetProgramInfoLog = NULL;
PFNGLGETPROGRAMIVPROC __glewGetProgramiv = NULL;
PFNGLGETSHADERINFOLOGPROC __glewGetShaderInfoLog = NULL;
PFNGLGETSHADERSOURCEPROC __glewGetShaderSource = NULL;
PFNGLGETSHADERIVPROC __glewGetShaderiv = NULL;
PFNGLGETUNIFORMLOCATIONPROC __glewGetUniformLocation = NULL;
PFNGLGETUNIFORMFVPROC __glewGetUniformfv = NULL;
PFNGLGETUNIFORMIVPROC __glewGetUniformiv = NULL;
PFNGLGETVERTEXATTRIBPOINTERVPROC __glewGetVertexAttribPointerv = NULL;
PFNGLGETVERTEXATTRIBDVPROC __glewGetVertexAttribdv = NULL;
PFNGLGETVERTEXATTRIBFVPROC __glewGetVertexAttribfv = NULL;
PFNGLGETVERTEXATTRIBIVPROC __glewGetVertexAttribiv = NULL;
PFNGLISPROGRAMPROC __glewIsProgram = NULL;
PFNGLISSHADERPROC __glewIsShader = NULL;
PFNGLLINKPROGRAMPROC __glewLinkProgram = NULL;
PFNGLSHADERSOURCEPROC __glewShaderSource = NULL;
PFNGLSTENCILFUNCSEPARATEPROC __glewStencilFuncSeparate = NULL;
PFNGLSTENCILMASKSEPARATEPROC __glewStencilMaskSeparate = NULL;
PFNGLSTENCILOPSEPARATEPROC __glewStencilOpSeparate = NULL;
PFNGLUNIFORM1FPROC __glewUniform1f = NULL;
PFNGLUNIFORM1FVPROC __glewUniform1fv = NULL;
PFNGLUNIFORM1IPROC __glewUniform1i = NULL;
PFNGLUNIFORM1IVPROC __glewUniform1iv = NULL;
PFNGLUNIFORM2FPROC __glewUniform2f = NULL;
PFNGLUNIFORM2FVPROC __glewUniform2fv = NULL;
PFNGLUNIFORM2IPROC __glewUniform2i = NULL;
PFNGLUNIFORM2IVPROC __glewUniform2iv = NULL;
PFNGLUNIFORM3FPROC __glewUniform3f = NULL;
PFNGLUNIFORM3FVPROC __glewUniform3fv = NULL;
PFNGLUNIFORM3IPROC __glewUniform3i = NULL;
PFNGLUNIFORM3IVPROC __glewUniform3iv = NULL;
PFNGLUNIFORM4FPROC __glewUniform4f = NULL;
PFNGLUNIFORM4FVPROC __glewUniform4fv = NULL;
PFNGLUNIFORM4IPROC __glewUniform4i = NULL;
PFNGLUNIFORM4IVPROC __glewUniform4iv = NULL;
PFNGLUNIFORMMATRIX2FVPROC __glewUniformMatrix2fv = NULL;
PFNGLUNIFORMMATRIX3FVPROC __glewUniformMatrix3fv = NULL;
PFNGLUNIFORMMATRIX4FVPROC __glewUniformMatrix4fv = NULL;
PFNGLUSEPROGRAMPROC __glewUseProgram = NULL;
PFNGLVALIDATEPROGRAMPROC __glewValidateProgram = NULL;
PFNGLVERTEXATTRIB1DPROC __glewVertexAttrib1d = NULL;
PFNGLVERTEXATTRIB1DVPROC __glewVertexAttrib1dv = NULL;
PFNGLVERTEXATTRIB1FPROC __glewVertexAttrib1f = NULL;
PFNGLVERTEXATTRIB1FVPROC __glewVertexAttrib1fv = NULL;
PFNGLVERTEXATTRIB1SPROC __glewVertexAttrib1s = NULL;
PFNGLVERTEXATTRIB1SVPROC __glewVertexAttrib1sv = NULL;
PFNGLVERTEXATTRIB2DPROC __glewVertexAttrib2d = NULL;
PFNGLVERTEXATTRIB2DVPROC __glewVertexAttrib2dv = NULL;
PFNGLVERTEXATTRIB2FPROC __glewVertexAttrib2f = NULL;
PFNGLVERTEXATTRIB2FVPROC __glewVertexAttrib2fv = NULL;
PFNGLVERTEXATTRIB2SPROC __glewVertexAttrib2s = NULL;
PFNGLVERTEXATTRIB2SVPROC __glewVertexAttrib2sv = NULL;
PFNGLVERTEXATTRIB3DPROC __glewVertexAttrib3d = NULL;
PFNGLVERTEXATTRIB3DVPROC __glewVertexAttrib3dv = NULL;
PFNGLVERTEXATTRIB3FPROC __glewVertexAttrib3f = NULL;
PFNGLVERTEXATTRIB3FVPROC __glewVertexAttrib3fv = NULL;
PFNGLVERTEXATTRIB3SPROC __glewVertexAttrib3s = NULL;
PFNGLVERTEXATTRIB3SVPROC __glewVertexAttrib3sv = NULL;
PFNGLVERTEXATTRIB4NBVPROC __glewVertexAttrib4Nbv = NULL;
PFNGLVERTEXATTRIB4NIVPROC __glewVertexAttrib4Niv = NULL;
PFNGLVERTEXATTRIB4NSVPROC __glewVertexAttrib4Nsv = NULL;
PFNGLVERTEXATTRIB4NUBPROC __glewVertexAttrib4Nub = NULL;
PFNGLVERTEXATTRIB4NUBVPROC __glewVertexAttrib4Nubv = NULL;
PFNGLVERTEXATTRIB4NUIVPROC __glewVertexAttrib4Nuiv = NULL;
PFNGLVERTEXATTRIB4NUSVPROC __glewVertexAttrib4Nusv = NULL;
PFNGLVERTEXATTRIB4BVPROC __glewVertexAttrib4bv = NULL;
PFNGLVERTEXATTRIB4DPROC __glewVertexAttrib4d = NULL;
PFNGLVERTEXATTRIB4DVPROC __glewVertexAttrib4dv = NULL;
PFNGLVERTEXATTRIB4FPROC __glewVertexAttrib4f = NULL;
PFNGLVERTEXATTRIB4FVPROC __glewVertexAttrib4fv = NULL;
PFNGLVERTEXATTRIB4IVPROC __glewVertexAttrib4iv = NULL;
PFNGLVERTEXATTRIB4SPROC __glewVertexAttrib4s = NULL;
PFNGLVERTEXATTRIB4SVPROC __glewVertexAttrib4sv = NULL;
PFNGLVERTEXATTRIB4UBVPROC __glewVertexAttrib4ubv = NULL;
PFNGLVERTEXATTRIB4UIVPROC __glewVertexAttrib4uiv = NULL;
PFNGLVERTEXATTRIB4USVPROC __glewVertexAttrib4usv = NULL;
PFNGLVERTEXATTRIBPOINTERPROC __glewVertexAttribPointer = NULL;

PFNGLUNIFORMMATRIX2X3FVPROC __glewUniformMatrix2x3fv = NULL;
PFNGLUNIFORMMATRIX2X4FVPROC __glewUniformMatrix2x4fv = NULL;
PFNGLUNIFORMMATRIX3X2FVPROC __glewUniformMatrix3x2fv = NULL;
PFNGLUNIFORMMATRIX3X4FVPROC __glewUniformMatrix3x4fv = NULL;
PFNGLUNIFORMMATRIX4X2FVPROC __glewUniformMatrix4x2fv = NULL;
PFNGLUNIFORMMATRIX4X3FVPROC __glewUniformMatrix4x3fv = NULL;

PFNGLBEGINCONDITIONALRENDERPROC __glewBeginConditionalRender = NULL;
PFNGLBEGINTRANSFORMFEEDBACKPROC __glewBeginTransformFeedback = NULL;
PFNGLBINDFRAGDATALOCATIONPROC __glewBindFragDataLocation = NULL;
PFNGLCLAMPCOLORPROC __glewClampColor = NULL;
PFNGLCLEARBUFFERFIPROC __glewClearBufferfi = NULL;
PFNGLCLEARBUFFERFVPROC __glewClearBufferfv = NULL;
PFNGLCLEARBUFFERIVPROC __glewClearBufferiv = NULL;
PFNGLCLEARBUFFERUIVPROC __glewClearBufferuiv = NULL;
PFNGLCOLORMASKIPROC __glewColorMaski = NULL;
PFNGLDISABLEIPROC __glewDisablei = NULL;
PFNGLENABLEIPROC __glewEnablei = NULL;
PFNGLENDCONDITIONALRENDERPROC __glewEndConditionalRender = NULL;
PFNGLENDTRANSFORMFEEDBACKPROC __glewEndTransformFeedback = NULL;
PFNGLGETBOOLEANI_VPROC __glewGetBooleani_v = NULL;
PFNGLGETFRAGDATALOCATIONPROC __glewGetFragDataLocation = NULL;
PFNGLGETSTRINGIPROC __glewGetStringi = NULL;
PFNGLGETTEXPARAMETERIIVPROC __glewGetTexParameterIiv = NULL;
PFNGLGETTEXPARAMETERIUIVPROC __glewGetTexParameterIuiv = NULL;
PFNGLGETTRANSFORMFEEDBACKVARYINGPROC __glewGetTransformFeedbackVarying = NULL;
PFNGLGETUNIFORMUIVPROC __glewGetUniformuiv = NULL;
PFNGLGETVERTEXATTRIBIIVPROC __glewGetVertexAttribIiv = NULL;
PFNGLGETVERTEXATTRIBIUIVPROC __glewGetVertexAttribIuiv = NULL;
PFNGLISENABLEDIPROC __glewIsEnabledi = NULL;
PFNGLTEXPARAMETERIIVPROC __glewTexParameterIiv = NULL;
PFNGLTEXPARAMETERIUIVPROC __glewTexParameterIuiv = NULL;
PFNGLTRANSFORMFEEDBACKVARYINGSPROC __glewTransformFeedbackVaryings = NULL;
PFNGLUNIFORM1UIPROC __glewUniform1ui = NULL;
PFNGLUNIFORM1UIVPROC __glewUniform1uiv = NULL;
PFNGLUNIFORM2UIPROC __glewUniform2ui = NULL;
PFNGLUNIFORM2UIVPROC __glewUniform2uiv = NULL;
PFNGLUNIFORM3UIPROC __glewUniform3ui = NULL;
PFNGLUNIFORM3UIVPROC __glewUniform3uiv = NULL;
PFNGLUNIFORM4UIPROC __glewUniform4ui = NULL;
PFNGLUNIFORM4UIVPROC __glewUniform4uiv = NULL;
PFNGLVERTEXATTRIBI1IPROC __glewVertexAttribI1i = NULL;
PFNGLVERTEXATTRIBI1IVPROC __glewVertexAttribI1iv = NULL;
PFNGLVERTEXATTRIBI1UIPROC __glewVertexAttribI1ui = NULL;
PFNGLVERTEXATTRIBI1UIVPROC __glewVertexAttribI1uiv = NULL;
PFNGLVERTEXATTRIBI2IPROC __glewVertexAttribI2i = NULL;
PFNGLVERTEXATTRIBI2IVPROC __glewVertexAttribI2iv = NULL;
PFNGLVERTEXATTRIBI2UIPROC __glewVertexAttribI2ui = NULL;
PFNGLVERTEXATTRIBI2UIVPROC __glewVertexAttribI2uiv = NULL;
PFNGLVERTEXATTRIBI3IPROC __glewVertexAttribI3i = NULL;
PFNGLVERTEXATTRIBI3IVPROC __glewVertexAttribI3iv = NULL;
PFNGLVERTEXATTRIBI3UIPROC __glewVertexAttribI3ui = NULL;
PFNGLVERTEXATTRIBI3UIVPROC __glewVertexAttribI3uiv = NULL;
PFNGLVERTEXATTRIBI4BVPROC __glewVertexAttribI4bv = NULL;
PFNGLVERTEXATTRIBI4IPROC __glewVertexAttribI4i = NULL;
PFNGLVERTEXATTRIBI4IVPROC __glewVertexAttribI4iv = NULL;
PFNGLVERTEXATTRIBI4SVPROC __glewVertexAttribI4sv = NULL;
PFNGLVERTEXATTRIBI4UBVPROC __glewVertexAttribI4ubv = NULL;
PFNGLVERTEXATTRIBI4UIPROC __glewVertexAttribI4ui = NULL;
PFNGLVERTEXATTRIBI4UIVPROC __glewVertexAttribI4uiv = NULL;
PFNGLVERTEXATTRIBI4USVPROC __glewVertexAttribI4usv = NULL;
PFNGLVERTEXATTRIBIPOINTERPROC __glewVertexAttribIPointer = NULL;

PFNGLDRAWARRAYSINSTANCEDPROC __glewDrawArraysInstanced = NULL;
PFNGLDRAWELEMENTSINSTANCEDPROC __glewDrawElementsInstanced = NULL;
PFNGLPRIMITIVERESTARTINDEXPROC __glewPrimitiveRestartIndex = NULL;
PFNGLTEXBUFFERPROC __glewTexBuffer = NULL;

PFNGLFRAMEBUFFERTEXTUREPROC __glewFramebufferTexture = NULL;
PFNGLGETBUFFERPARAMETERI64VPROC __glewGetBufferParameteri64v = NULL;
PFNGLGETINTEGER64I_VPROC __glewGetInteger64i_v = NULL;

PFNGLVERTEXATTRIBDIVISORPROC __glewVertexAttribDivisor = NULL;

PFNGLBLENDEQUATIONSEPARATEIPROC __glewBlendEquationSeparatei = NULL;
PFNGLBLENDEQUATIONIPROC __glewBlendEquationi = NULL;
PFNGLBLENDFUNCSEPARATEIPROC __glewBlendFuncSeparatei = NULL;
PFNGLBLENDFUNCIPROC __glewBlendFunci = NULL;
PFNGLMINSAMPLESHADINGPROC __glewMinSampleShading = NULL;

PFNGLTBUFFERMASK3DFXPROC __glewTbufferMask3DFX = NULL;

PFNGLDEBUGMESSAGECALLBACKAMDPROC __glewDebugMessageCallbackAMD = NULL;
PFNGLDEBUGMESSAGEENABLEAMDPROC __glewDebugMessageEnableAMD = NULL;
PFNGLDEBUGMESSAGEINSERTAMDPROC __glewDebugMessageInsertAMD = NULL;
PFNGLGETDEBUGMESSAGELOGAMDPROC __glewGetDebugMessageLogAMD = NULL;

PFNGLBLENDEQUATIONINDEXEDAMDPROC __glewBlendEquationIndexedAMD = NULL;
PFNGLBLENDEQUATIONSEPARATEINDEXEDAMDPROC __glewBlendEquationSeparateIndexedAMD = NULL;
PFNGLBLENDFUNCINDEXEDAMDPROC __glewBlendFuncIndexedAMD = NULL;
PFNGLBLENDFUNCSEPARATEINDEXEDAMDPROC __glewBlendFuncSeparateIndexedAMD = NULL;

PFNGLDELETENAMESAMDPROC __glewDeleteNamesAMD = NULL;
PFNGLGENNAMESAMDPROC __glewGenNamesAMD = NULL;
PFNGLISNAMEAMDPROC __glewIsNameAMD = NULL;

PFNGLBEGINPERFMONITORAMDPROC __glewBeginPerfMonitorAMD = NULL;
PFNGLDELETEPERFMONITORSAMDPROC __glewDeletePerfMonitorsAMD = NULL;
PFNGLENDPERFMONITORAMDPROC __glewEndPerfMonitorAMD = NULL;
PFNGLGENPERFMONITORSAMDPROC __glewGenPerfMonitorsAMD = NULL;
PFNGLGETPERFMONITORCOUNTERDATAAMDPROC __glewGetPerfMonitorCounterDataAMD = NULL;
PFNGLGETPERFMONITORCOUNTERINFOAMDPROC __glewGetPerfMonitorCounterInfoAMD = NULL;
PFNGLGETPERFMONITORCOUNTERSTRINGAMDPROC __glewGetPerfMonitorCounterStringAMD = NULL;
PFNGLGETPERFMONITORCOUNTERSAMDPROC __glewGetPerfMonitorCountersAMD = NULL;
PFNGLGETPERFMONITORGROUPSTRINGAMDPROC __glewGetPerfMonitorGroupStringAMD = NULL;
PFNGLGETPERFMONITORGROUPSAMDPROC __glewGetPerfMonitorGroupsAMD = NULL;
PFNGLSELECTPERFMONITORCOUNTERSAMDPROC __glewSelectPerfMonitorCountersAMD = NULL;

PFNGLSETMULTISAMPLEFVAMDPROC __glewSetMultisamplefvAMD = NULL;

PFNGLTESSELLATIONFACTORAMDPROC __glewTessellationFactorAMD = NULL;
PFNGLTESSELLATIONMODEAMDPROC __glewTessellationModeAMD = NULL;

PFNGLDRAWELEMENTARRAYAPPLEPROC __glewDrawElementArrayAPPLE = NULL;
PFNGLDRAWRANGEELEMENTARRAYAPPLEPROC __glewDrawRangeElementArrayAPPLE = NULL;
PFNGLELEMENTPOINTERAPPLEPROC __glewElementPointerAPPLE = NULL;
PFNGLMULTIDRAWELEMENTARRAYAPPLEPROC __glewMultiDrawElementArrayAPPLE = NULL;
PFNGLMULTIDRAWRANGEELEMENTARRAYAPPLEPROC __glewMultiDrawRangeElementArrayAPPLE = NULL;

PFNGLDELETEFENCESAPPLEPROC __glewDeleteFencesAPPLE = NULL;
PFNGLFINISHFENCEAPPLEPROC __glewFinishFenceAPPLE = NULL;
PFNGLFINISHOBJECTAPPLEPROC __glewFinishObjectAPPLE = NULL;
PFNGLGENFENCESAPPLEPROC __glewGenFencesAPPLE = NULL;
PFNGLISFENCEAPPLEPROC __glewIsFenceAPPLE = NULL;
PFNGLSETFENCEAPPLEPROC __glewSetFenceAPPLE = NULL;
PFNGLTESTFENCEAPPLEPROC __glewTestFenceAPPLE = NULL;
PFNGLTESTOBJECTAPPLEPROC __glewTestObjectAPPLE = NULL;

PFNGLBUFFERPARAMETERIAPPLEPROC __glewBufferParameteriAPPLE = NULL;
PFNGLFLUSHMAPPEDBUFFERRANGEAPPLEPROC __glewFlushMappedBufferRangeAPPLE = NULL;

PFNGLGETOBJECTPARAMETERIVAPPLEPROC __glewGetObjectParameterivAPPLE = NULL;
PFNGLOBJECTPURGEABLEAPPLEPROC __glewObjectPurgeableAPPLE = NULL;
PFNGLOBJECTUNPURGEABLEAPPLEPROC __glewObjectUnpurgeableAPPLE = NULL;

PFNGLGETTEXPARAMETERPOINTERVAPPLEPROC __glewGetTexParameterPointervAPPLE = NULL;
PFNGLTEXTURERANGEAPPLEPROC __glewTextureRangeAPPLE = NULL;

PFNGLBINDVERTEXARRAYAPPLEPROC __glewBindVertexArrayAPPLE = NULL;
PFNGLDELETEVERTEXARRAYSAPPLEPROC __glewDeleteVertexArraysAPPLE = NULL;
PFNGLGENVERTEXARRAYSAPPLEPROC __glewGenVertexArraysAPPLE = NULL;
PFNGLISVERTEXARRAYAPPLEPROC __glewIsVertexArrayAPPLE = NULL;

PFNGLFLUSHVERTEXARRAYRANGEAPPLEPROC __glewFlushVertexArrayRangeAPPLE = NULL;
PFNGLVERTEXARRAYPARAMETERIAPPLEPROC __glewVertexArrayParameteriAPPLE = NULL;
PFNGLVERTEXARRAYRANGEAPPLEPROC __glewVertexArrayRangeAPPLE = NULL;

PFNGLDISABLEVERTEXATTRIBAPPLEPROC __glewDisableVertexAttribAPPLE = NULL;
PFNGLENABLEVERTEXATTRIBAPPLEPROC __glewEnableVertexAttribAPPLE = NULL;
PFNGLISVERTEXATTRIBENABLEDAPPLEPROC __glewIsVertexAttribEnabledAPPLE = NULL;
PFNGLMAPVERTEXATTRIB1DAPPLEPROC __glewMapVertexAttrib1dAPPLE = NULL;
PFNGLMAPVERTEXATTRIB1FAPPLEPROC __glewMapVertexAttrib1fAPPLE = NULL;
PFNGLMAPVERTEXATTRIB2DAPPLEPROC __glewMapVertexAttrib2dAPPLE = NULL;
PFNGLMAPVERTEXATTRIB2FAPPLEPROC __glewMapVertexAttrib2fAPPLE = NULL;

PFNGLCLEARDEPTHFPROC __glewClearDepthf = NULL;
PFNGLDEPTHRANGEFPROC __glewDepthRangef = NULL;
PFNGLGETSHADERPRECISIONFORMATPROC __glewGetShaderPrecisionFormat = NULL;
PFNGLRELEASESHADERCOMPILERPROC __glewReleaseShaderCompiler = NULL;
PFNGLSHADERBINARYPROC __glewShaderBinary = NULL;

PFNGLBINDFRAGDATALOCATIONINDEXEDPROC __glewBindFragDataLocationIndexed = NULL;
PFNGLGETFRAGDATAINDEXPROC __glewGetFragDataIndex = NULL;

PFNGLCREATESYNCFROMCLEVENTARBPROC __glewCreateSyncFromCLeventARB = NULL;

PFNGLCLAMPCOLORARBPROC __glewClampColorARB = NULL;

PFNGLCOPYBUFFERSUBDATAPROC __glewCopyBufferSubData = NULL;

PFNGLDEBUGMESSAGECALLBACKARBPROC __glewDebugMessageCallbackARB = NULL;
PFNGLDEBUGMESSAGECONTROLARBPROC __glewDebugMessageControlARB = NULL;
PFNGLDEBUGMESSAGEINSERTARBPROC __glewDebugMessageInsertARB = NULL;
PFNGLGETDEBUGMESSAGELOGARBPROC __glewGetDebugMessageLogARB = NULL;

PFNGLDRAWBUFFERSARBPROC __glewDrawBuffersARB = NULL;

PFNGLBLENDEQUATIONSEPARATEIARBPROC __glewBlendEquationSeparateiARB = NULL;
PFNGLBLENDEQUATIONIARBPROC __glewBlendEquationiARB = NULL;
PFNGLBLENDFUNCSEPARATEIARBPROC __glewBlendFuncSeparateiARB = NULL;
PFNGLBLENDFUNCIARBPROC __glewBlendFunciARB = NULL;

PFNGLDRAWELEMENTSBASEVERTEXPROC __glewDrawElementsBaseVertex = NULL;
PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC __glewDrawElementsInstancedBaseVertex = NULL;
PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC __glewDrawRangeElementsBaseVertex = NULL;
PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC __glewMultiDrawElementsBaseVertex = NULL;

PFNGLDRAWARRAYSINDIRECTPROC __glewDrawArraysIndirect = NULL;
PFNGLDRAWELEMENTSINDIRECTPROC __glewDrawElementsIndirect = NULL;

PFNGLBINDFRAMEBUFFERPROC __glewBindFramebuffer = NULL;
PFNGLBINDRENDERBUFFERPROC __glewBindRenderbuffer = NULL;
PFNGLBLITFRAMEBUFFERPROC __glewBlitFramebuffer = NULL;
PFNGLCHECKFRAMEBUFFERSTATUSPROC __glewCheckFramebufferStatus = NULL;
PFNGLDELETEFRAMEBUFFERSPROC __glewDeleteFramebuffers = NULL;
PFNGLDELETERENDERBUFFERSPROC __glewDeleteRenderbuffers = NULL;
PFNGLFRAMEBUFFERRENDERBUFFERPROC __glewFramebufferRenderbuffer = NULL;
PFNGLFRAMEBUFFERTEXTURE1DPROC __glewFramebufferTexture1D = NULL;
PFNGLFRAMEBUFFERTEXTURE2DPROC __glewFramebufferTexture2D = NULL;
PFNGLFRAMEBUFFERTEXTURE3DPROC __glewFramebufferTexture3D = NULL;
PFNGLFRAMEBUFFERTEXTURELAYERPROC __glewFramebufferTextureLayer = NULL;
PFNGLGENFRAMEBUFFERSPROC __glewGenFramebuffers = NULL;
PFNGLGENRENDERBUFFERSPROC __glewGenRenderbuffers = NULL;
PFNGLGENERATEMIPMAPPROC __glewGenerateMipmap = NULL;
PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC __glewGetFramebufferAttachmentParameteriv = NULL;
PFNGLGETRENDERBUFFERPARAMETERIVPROC __glewGetRenderbufferParameteriv = NULL;
PFNGLISFRAMEBUFFERPROC __glewIsFramebuffer = NULL;
PFNGLISRENDERBUFFERPROC __glewIsRenderbuffer = NULL;
PFNGLRENDERBUFFERSTORAGEPROC __glewRenderbufferStorage = NULL;
PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC __glewRenderbufferStorageMultisample = NULL;

PFNGLFRAMEBUFFERTEXTUREARBPROC __glewFramebufferTextureARB = NULL;
PFNGLFRAMEBUFFERTEXTUREFACEARBPROC __glewFramebufferTextureFaceARB = NULL;
PFNGLFRAMEBUFFERTEXTURELAYERARBPROC __glewFramebufferTextureLayerARB = NULL;
PFNGLPROGRAMPARAMETERIARBPROC __glewProgramParameteriARB = NULL;

PFNGLGETPROGRAMBINARYPROC __glewGetProgramBinary = NULL;
PFNGLPROGRAMBINARYPROC __glewProgramBinary = NULL;
PFNGLPROGRAMPARAMETERIPROC __glewProgramParameteri = NULL;

PFNGLGETUNIFORMDVPROC __glewGetUniformdv = NULL;
PFNGLPROGRAMUNIFORM1DEXTPROC __glewProgramUniform1dEXT = NULL;
PFNGLPROGRAMUNIFORM1DVEXTPROC __glewProgramUniform1dvEXT = NULL;
PFNGLPROGRAMUNIFORM2DEXTPROC __glewProgramUniform2dEXT = NULL;
PFNGLPROGRAMUNIFORM2DVEXTPROC __glewProgramUniform2dvEXT = NULL;
PFNGLPROGRAMUNIFORM3DEXTPROC __glewProgramUniform3dEXT = NULL;
PFNGLPROGRAMUNIFORM3DVEXTPROC __glewProgramUniform3dvEXT = NULL;
PFNGLPROGRAMUNIFORM4DEXTPROC __glewProgramUniform4dEXT = NULL;
PFNGLPROGRAMUNIFORM4DVEXTPROC __glewProgramUniform4dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX2DVEXTPROC __glewProgramUniformMatrix2dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX2X3DVEXTPROC __glewProgramUniformMatrix2x3dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX2X4DVEXTPROC __glewProgramUniformMatrix2x4dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX3DVEXTPROC __glewProgramUniformMatrix3dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX3X2DVEXTPROC __glewProgramUniformMatrix3x2dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX3X4DVEXTPROC __glewProgramUniformMatrix3x4dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX4DVEXTPROC __glewProgramUniformMatrix4dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX4X2DVEXTPROC __glewProgramUniformMatrix4x2dvEXT = NULL;
PFNGLPROGRAMUNIFORMMATRIX4X3DVEXTPROC __glewProgramUniformMatrix4x3dvEXT = NULL;
PFNGLUNIFORM1DPROC __glewUniform1d = NULL;
PFNGLUNIFORM1DVPROC __glewUniform1dv = NULL;
PFNGLUNIFORM2DPROC __glewUniform2d = NULL;
PFNGLUNIFORM2DVPROC __glewUniform2dv = NULL;
PFNGLUNIFORM3DPROC __glewUniform3d = NULL;
PFNGLUNIFORM3DVPROC __glewUniform3dv = NULL;
PFNGLUNIFORM4DPROC __glewUniform4d = NULL;
PFNGLUNIFORM4DVPROC __glewUniform4dv = NULL;
PFNGLUNIFORMMATRIX2DVPROC __glewUniformMatrix2dv = NULL;
PFNGLUNIFORMMATRIX2X3DVPROC __glewUniformMatrix2x3dv = NULL;
PFNGLUNIFORMMATRIX2X4DVPROC __glewUniformMatrix2x4dv = NULL;
PFNGLUNIFORMMATRIX3DVPROC __glewUniformMatrix3dv = NULL;
PFNGLUNIFORMMATRIX3X2DVPROC __glewUniformMatrix3x2dv = NULL;
PFNGLUNIFORMMATRIX3X4DVPROC __glewUniformMatrix3x4dv = NULL;
PFNGLUNIFORMMATRIX4DVPROC __glewUniformMatrix4dv = NULL;
PFNGLUNIFORMMATRIX4X2DVPROC __glewUniformMatrix4x2dv = NULL;
PFNGLUNIFORMMATRIX4X3DVPROC __glewUniformMatrix4x3dv = NULL;

PFNGLCOLORSUBTABLEPROC __glewColorSubTable = NULL;
PFNGLCOLORTABLEPROC __glewColorTable = NULL;
PFNGLCOLORTABLEPARAMETERFVPROC __glewColorTableParameterfv = NULL;
PFNGLCOLORTABLEPARAMETERIVPROC __glewColorTableParameteriv = NULL;
PFNGLCONVOLUTIONFILTER1DPROC __glewConvolutionFilter1D = NULL;
PFNGLCONVOLUTIONFILTER2DPROC __glewConvolutionFilter2D = NULL;
PFNGLCONVOLUTIONPARAMETERFPROC __glewConvolutionParameterf = NULL;
PFNGLCONVOLUTIONPARAMETERFVPROC __glewConvolutionParameterfv = NULL;
PFNGLCONVOLUTIONPARAMETERIPROC __glewConvolutionParameteri = NULL;
PFNGLCONVOLUTIONPARAMETERIVPROC __glewConvolutionParameteriv = NULL;
PFNGLCOPYCOLORSUBTABLEPROC __glewCopyColorSubTable = NULL;
PFNGLCOPYCOLORTABLEPROC __glewCopyColorTable = NULL;
PFNGLCOPYCONVOLUTIONFILTER1DPROC __glewCopyConvolutionFilter1D = NULL;
PFNGLCOPYCONVOLUTIONFILTER2DPROC __glewCopyConvolutionFilter2D = NULL;
PFNGLGETCOLORTABLEPROC __glewGetColorTable = NULL;
PFNGLGETCOLORTABLEPARAMETERFVPROC __glewGetColorTableParameterfv = NULL;
PFNGLGETCOLORTABLEPARAMETERIVPROC __glewGetColorTableParameteriv = NULL;
PFNGLGETCONVOLUTIONFILTERPROC __glewGetConvolutionFilter = NULL;
PFNGLGETCONVOLUTIONPARAMETERFVPROC __glewGetConvolutionParameterfv = NULL;
PFNGLGETCONVOLUTIONPARAMETERIVPROC __glewGetConvolutionParameteriv = NULL;
PFNGLGETHISTOGRAMPROC __glewGetHistogram = NULL;
PFNGLGETHISTOGRAMPARAMETERFVPROC __glewGetHistogramParameterfv = NULL;
PFNGLGETHISTOGRAMPARAMETERIVPROC __glewGetHistogramParameteriv = NULL;
PFNGLGETMINMAXPROC __glewGetMinmax = NULL;
PFNGLGETMINMAXPARAMETERFVPROC __glewGetMinmaxParameterfv = NULL;
PFNGLGETMINMAXPARAMETERIVPROC __glewGetMinmaxParameteriv = NULL;
PFNGLGETSEPARABLEFILTERPROC __glewGetSeparableFilter = NULL;
PFNGLHISTOGRAMPROC __glewHistogram = NULL;
PFNGLMINMAXPROC __glewMinmax = NULL;
PFNGLRESETHISTOGRAMPROC __glewResetHistogram = NULL;
PFNGLRESETMINMAXPROC __glewResetMinmax = NULL;
PFNGLSEPARABLEFILTER2DPROC __glewSeparableFilter2D = NULL;

PFNGLDRAWARRAYSINSTANCEDARBPROC __glewDrawArraysInstancedARB = NULL;
PFNGLDRAWELEMENTSINSTANCEDARBPROC __glewDrawElementsInstancedARB = NULL;
PFNGLVERTEXATTRIBDIVISORARBPROC __glewVertexAttribDivisorARB = NULL;

PFNGLFLUSHMAPPEDBUFFERRANGEPROC __glewFlushMappedBufferRange = NULL;
PFNGLMAPBUFFERRANGEPROC __glewMapBufferRange = NULL;

PFNGLCURRENTPALETTEMATRIXARBPROC __glewCurrentPaletteMatrixARB = NULL;
PFNGLMATRIXINDEXPOINTERARBPROC __glewMatrixIndexPointerARB = NULL;
PFNGLMATRIXINDEXUBVARBPROC __glewMatrixIndexubvARB = NULL;
PFNGLMATRIXINDEXUIVARBPROC __glewMatrixIndexuivARB = NULL;
PFNGLMATRIXINDEXUSVARBPROC __glewMatrixIndexusvARB = NULL;

PFNGLSAMPLECOVERAGEARBPROC __glewSampleCoverageARB = NULL;

PFNGLACTIVETEXTUREARBPROC __glewActiveTextureARB = NULL;
PFNGLCLIENTACTIVETEXTUREARBPROC __glewClientActiveTextureARB = NULL;
PFNGLMULTITEXCOORD1DARBPROC __glewMultiTexCoord1dARB = NULL;
PFNGLMULTITEXCOORD1DVARBPROC __glewMultiTexCoord1dvARB = NULL;
PFNGLMULTITEXCOORD1FARBPROC __glewMultiTexCoord1fARB = NULL;
PFNGLMULTITEXCOORD1FVARBPROC __glewMultiTexCoord1fvARB = NULL;
PFNGLMULTITEXCOORD1IARBPROC __glewMultiTexCoord1iARB = NULL;
PFNGLMULTITEXCOORD1IVARBPROC __glewMultiTexCoord1ivARB = NULL;
PFNGLMULTITEXCOORD1SARBPROC __glewMultiTexCoord1sARB = NULL;
PFNGLMULTITEXCOORD1SVARBPROC __glewMultiTexCoord1svARB = NULL;
PFNGLMULTITEXCOORD2DARBPROC __glewMultiTexCoord2dARB = NULL;
PFNGLMULTITEXCOORD2DVARBPROC __glewMultiTexCoord2dvARB = NULL;
PFNGLMULTITEXCOORD2FARBPROC __glewMultiTexCoord2fARB = NULL;
PFNGLMULTITEXCOORD2FVARBPROC __glewMultiTexCoord2fvARB = NULL;
PFNGLMULTITEXCOORD2IARBPROC __glewMultiTexCoord2iARB = NULL;
PFNGLMULTITEXCOORD2IVARBPROC __glewMultiTexCoord2ivARB = NULL;
PFNGLMULTITEXCOORD2SARBPROC __glewMultiTexCoord2sARB = NULL;
PFNGLMULTITEXCOORD2SVARBPROC __glewMultiTexCoord2svARB = NULL;
PFNGLMULTITEXCOORD3DARBPROC __glewMultiTexCoord3dARB = NULL;
PFNGLMULTITEXCOORD3DVARBPROC __glewMultiTexCoord3dvARB = NULL;
PFNGLMULTITEXCOORD3FARBPROC __glewMultiTexCoord3fARB = NULL;
PFNGLMULTITEXCOORD3FVARBPROC __glewMultiTexCoord3fvARB = NULL;
PFNGLMULTITEXCOORD3IARBPROC __glewMultiTexCoord3iARB = NULL;
PFNGLMULTITEXCOORD3IVARBPROC __glewMultiTexCoord3ivARB = NULL;
PFNGLMULTITEXCOORD3SARBPROC __glewMultiTexCoord3sARB = NULL;
PFNGLMULTITEXCOORD3SVARBPROC __glewMultiTexCoord3svARB = NULL;
PFNGLMULTITEXCOORD4DARBPROC __glewMultiTexCoord4dARB = NULL;
PFNGLMULTITEXCOORD4DVARBPROC __glewMultiTexCoord4dvARB = NULL;
PFNGLMULTITEXCOORD4FARBPROC __glewMultiTexCoord4fARB = NULL;
PFNGLMULTITEXCOORD4FVARBPROC __glewMultiTexCoord4fvARB = NULL;
PFNGLMULTITEXCOORD4IARBPROC __glewMultiTexCoord4iARB = NULL;
PFNGLMULTITEXCOORD4IVARBPROC __glewMultiTexCoord4ivARB = NULL;
PFNGLMULTITEXCOORD4SARBPROC __glewMultiTexCoord4sARB = NULL;
PFNGLMULTITEXCOORD4SVARBPROC __glewMultiTexCoord4svARB = NULL;

PFNGLBEGINQUERYARBPROC __glewBeginQueryARB = NULL;
PFNGLDELETEQUERIESARBPROC __glewDeleteQueriesARB = NULL;
PFNGLENDQUERYARBPROC __glewEndQueryARB = NULL;
PFNGLGENQUERIESARBPROC __glewGenQueriesARB = NULL;
PFNGLGETQUERYOBJECTIVARBPROC __glewGetQueryObjectivARB = NULL;
PFNGLGETQUERYOBJECTUIVARBPROC __glewGetQueryObjectuivARB = NULL;
PFNGLGETQUERYIVARBPROC __glewGetQueryivARB = NULL;
PFNGLISQUERYARBPROC __glewIsQueryARB = NULL;

PFNGLPOINTPARAMETERFARBPROC __glewPointParameterfARB = NULL;
PFNGLPOINTPARAMETERFVARBPROC __glewPointParameterfvARB = NULL;

PFNGLPROVOKINGVERTEXPROC __glewProvokingVertex = NULL;

PFNGLGETNCOLORTABLEARBPROC __glewGetnColorTableARB = NULL;
PFNGLGETNCOMPRESSEDTEXIMAGEARBPROC __glewGetnCompressedTexImageARB = NULL;
PFNGLGETNCONVOLUTIONFILTERARBPROC __glewGetnConvolutionFilterARB = NULL;
PFNGLGETNHISTOGRAMARBPROC __glewGetnHistogramARB = NULL;
PFNGLGETNMAPDVARBPROC __glewGetnMapdvARB = NULL;
PFNGLGETNMAPFVARBPROC __glewGetnMapfvARB = NULL;
PFNGLGETNMAPIVARBPROC __glewGetnMapivARB = NULL;
PFNGLGETNMINMAXARBPROC __glewGetnMinmaxARB = NULL;
PFNGLGETNPIXELMAPFVARBPROC __glewGetnPixelMapfvARB = NULL;
PFNGLGETNPIXELMAPUIVARBPROC __glewGetnPixelMapuivARB = NULL;
PFNGLGETNPIXELMAPUSVARBPROC __glewGetnPixelMapusvARB = NULL;
PFNGLGETNPOLYGONSTIPPLEARBPROC __glewGetnPolygonStippleARB = NULL;
PFNGLGETNSEPARABLEFILTERARBPROC __glewGetnSeparableFilterARB = NULL;
PFNGLGETNTEXIMAGEARBPROC __glewGetnTexImageARB = NULL;
PFNGLGETNUNIFORMDVARBPROC __glewGetnUniformdvARB = NULL;
PFNGLGETNUNIFORMFVARBPROC __glewGetnUniformfvARB = NULL;
PFNGLGETNUNIFORMIVARBPROC __glewGetnUniformivARB = NULL;
PFNGLGETNUNIFORMUIVARBPROC __glewGetnUniformuivARB = NULL;
PFNGLREADNPIXELSARBPROC __glewReadnPixelsARB = NULL;

PFNGLMINSAMPLESHADINGARBPROC __glewMinSampleShadingARB = NULL;

PFNGLBINDSAMPLERPROC __glewBindSampler = NULL;
PFNGLDELETESAMPLERSPROC __glewDeleteSamplers = NULL;
PFNGLGENSAMPLERSPROC __glewGenSamplers = NULL;
PFNGLGETSAMPLERPARAMETERIIVPROC __glewGetSamplerParameterIiv = NULL;
PFNGLGETSAMPLERPARAMETERIUIVPROC __glewGetSamplerParameterIuiv = NULL;
PFNGLGETSAMPLERPARAMETERFVPROC __glewGetSamplerParameterfv = NULL;
PFNGLGETSAMPLERPARAMETERIVPROC __glewGetSamplerParameteriv = NULL;
PFNGLISSAMPLERPROC __glewIsSampler = NULL;
PFNGLSAMPLERPARAMETERIIVPROC __glewSamplerParameterIiv = NULL;
PFNGLSAMPLERPARAMETERIUIVPROC __glewSamplerParameterIuiv = NULL;
PFNGLSAMPLERPARAMETERFPROC __glewSamplerParameterf = NULL;
PFNGLSAMPLERPARAMETERFVPROC __glewSamplerParameterfv = NULL;
PFNGLSAMPLERPARAMETERIPROC __glewSamplerParameteri = NULL;
PFNGLSAMPLERPARAMETERIVPROC __glewSamplerParameteriv = NULL;

PFNGLACTIVESHADERPROGRAMPROC __glewActiveShaderProgram = NULL;
PFNGLBINDPROGRAMPIPELINEPROC __glewBindProgramPipeline = NULL;
PFNGLCREATESHADERPROGRAMVPROC __glewCreateShaderProgramv = NULL;
PFNGLDELETEPROGRAMPIPELINESPROC __glewDeleteProgramPipelines = NULL;
PFNGLGENPROGRAMPIPELINESPROC __glewGenProgramPipelines = NULL;
PFNGLGETPROGRAMPIPELINEINFOLOGPROC __glewGetProgramPipelineInfoLog = NULL;
PFNGLGETPROGRAMPIPELINEIVPROC __glewGetProgramPipelineiv = NULL;
PFNGLISPROGRAMPIPELINEPROC __glewIsProgramPipeline = NULL;
PFNGLPROGRAMUNIFORM1DPROC __glewProgramUniform1d = NULL;
PFNGLPROGRAMUNIFORM1DVPROC __glewProgramUniform1dv = NULL;
PFNGLPROGRAMUNIFORM1FPROC __glewProgramUniform1f = NULL;
PFNGLPROGRAMUNIFORM1FVPROC __glewProgramUniform1fv = NULL;
PFNGLPROGRAMUNIFORM1IPROC __glewProgramUniform1i = NULL;
PFNGLPROGRAMUNIFORM1IVPROC __glewProgramUniform1iv = NULL;
PFNGLPROGRAMUNIFORM1UIPROC __glewProgramUniform1ui = NULL;
PFNGLPROGRAMUNIFORM1UIVPROC __glewProgramUniform1uiv = NULL;
PFNGLPROGRAMUNIFORM2DPROC __glewProgramUniform2d = NULL;
PFNGLPROGRAMUNIFORM2DVPROC __glewProgramUniform2dv = NULL;
PFNGLPROGRAMUNIFORM2FPROC __glewProgramUniform2f = NULL;
PFNGLPROGRAMUNIFORM2FVPROC __glewProgramUniform2fv = NULL;
PFNGLPROGRAMUNIFORM2IPROC __glewProgramUniform2i = NULL;
PFNGLPROGRAMUNIFORM2IVPROC __glewProgramUniform2iv = NULL;
PFNGLPROGRAMUNIFORM2UIPROC __glewProgramUniform2ui = NULL;
PFNGLPROGRAMUNIFORM2UIVPROC __glewProgramUniform2uiv = NULL;
PFNGLPROGRAMUNIFORM3DPROC __glewProgramUniform3d = NULL;
PFNGLPROGRAMUNIFORM3DVPROC __glewProgramUniform3dv = NULL;
PFNGLPROGRAMUNIFORM3FPROC __glewProgramUniform3f = NULL;
PFNGLPROGRAMUNIFORM3FVPROC __glewProgramUniform3fv = NULL;
PFNGLPROGRAMUNIFORM3IPROC __glewProgramUniform3i = NULL;
PFNGLPROGRAMUNIFORM3IVPROC __glewProgramUniform3iv = NULL;
PFNGLPROGRAMUNIFORM3UIPROC __glewProgramUniform3ui = NULL;
PFNGLPROGRAMUNIFORM3UIVPROC __glewProgramUniform3uiv = NULL;
PFNGLPROGRAMUNIFORM4DPROC __glewProgramUniform4d = NULL;
PFNGLPROGRAMUNIFORM4DVPROC __glewProgramUniform4dv = NULL;
PFNGLPROGRAMUNIFORM4FPROC __glewProgramUniform4f = NULL;
PFNGLPROGRAMUNIFORM4FVPROC __glewProgramUniform4fv = NULL;
PFNGLPROGRAMUNIFORM4IPROC __glewProgramUniform4i = NULL;
PFNGLPROGRAMUNIFORM4IVPROC __glewProgramUniform4iv = NULL;
PFNGLPROGRAMUNIFORM4UIPROC __glewProgramUniform4ui = NULL;
PFNGLPROGRAMUNIFORM4UIVPROC __glewProgramUniform4uiv = NULL;
PFNGLPROGRAMUNIFORMMATRIX2DVPROC __glewProgramUniformMatrix2dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX2FVPROC __glewProgramUniformMatrix2fv = NULL;
PFNGLPROGRAMUNIFORMMATRIX2X3DVPROC __glewProgramUniformMatrix2x3dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX2X3FVPROC __glewProgramUniformMatrix2x3fv = NULL;
PFNGLPROGRAMUNIFORMMATRIX2X4DVPROC __glewProgramUniformMatrix2x4dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX2X4FVPROC __glewProgramUniformMatrix2x4fv = NULL;
PFNGLPROGRAMUNIFORMMATRIX3DVPROC __glewProgramUniformMatrix3dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX3FVPROC __glewProgramUniformMatrix3fv = NULL;
PFNGLPROGRAMUNIFORMMATRIX3X2DVPROC __glewProgramUniformMatrix3x2dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX3X2FVPROC __glewProgramUniformMatrix3x2fv = NULL;
PFNGLPROGRAMUNIFORMMATRIX3X4DVPROC __glewProgramUniformMatrix3x4dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX3X4FVPROC __glewProgramUniformMatrix3x4fv = NULL;
PFNGLPROGRAMUNIFORMMATRIX4DVPROC __glewProgramUniformMatrix4dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX4FVPROC __glewProgramUniformMatrix4fv = NULL;
PFNGLPROGRAMUNIFORMMATRIX4X2DVPROC __glewProgramUniformMatrix4x2dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX4X2FVPROC __glewProgramUniformMatrix4x2fv = NULL;
PFNGLPROGRAMUNIFORMMATRIX4X3DVPROC __glewProgramUniformMatrix4x3dv = NULL;
PFNGLPROGRAMUNIFORMMATRIX4X3FVPROC __glewProgramUniformMatrix4x3fv = NULL;
PFNGLUSEPROGRAMSTAGESPROC __glewUseProgramStages = NULL;
PFNGLVALIDATEPROGRAMPIPELINEPROC __glewValidateProgramPipeline = NULL;

PFNGLATTACHOBJECTARBPROC __glewAttachObjectARB = NULL;
PFNGLCOMPILESHADERARBPROC __glewCompileShaderARB = NULL;
PFNGLCREATEPROGRAMOBJECTARBPROC __glewCreateProgramObjectARB = NULL;
PFNGLCREATESHADEROBJECTARBPROC __glewCreateShaderObjectARB = NULL;
PFNGLDELETEOBJECTARBPROC __glewDeleteObjectARB = NULL;
PFNGLDETACHOBJECTARBPROC __glewDetachObjectARB = NULL;
PFNGLGETACTIVEUNIFORMARBPROC __glewGetActiveUniformARB = NULL;
PFNGLGETATTACHEDOBJECTSARBPROC __glewGetAttachedObjectsARB = NULL;
PFNGLGETHANDLEARBPROC __glewGetHandleARB = NULL;
PFNGLGETINFOLOGARBPROC __glewGetInfoLogARB = NULL;
PFNGLGETOBJECTPARAMETERFVARBPROC __glewGetObjectParameterfvARB = NULL;
PFNGLGETOBJECTPARAMETERIVARBPROC __glewGetObjectParameterivARB = NULL;
PFNGLGETSHADERSOURCEARBPROC __glewGetShaderSourceARB = NULL;
PFNGLGETUNIFORMLOCATIONARBPROC __glewGetUniformLocationARB = NULL;
PFNGLGETUNIFORMFVARBPROC __glewGetUniformfvARB = NULL;
PFNGLGETUNIFORMIVARBPROC __glewGetUniformivARB = NULL;
PFNGLLINKPROGRAMARBPROC __glewLinkProgramARB = NULL;
PFNGLSHADERSOURCEARBPROC __glewShaderSourceARB = NULL;
PFNGLUNIFORM1FARBPROC __glewUniform1fARB = NULL;
PFNGLUNIFORM1FVARBPROC __glewUniform1fvARB = NULL;
PFNGLUNIFORM1IARBPROC __glewUniform1iARB = NULL;
PFNGLUNIFORM1IVARBPROC __glewUniform1ivARB = NULL;
PFNGLUNIFORM2FARBPROC __glewUniform2fARB = NULL;
PFNGLUNIFORM2FVARBPROC __glewUniform2fvARB = NULL;
PFNGLUNIFORM2IARBPROC __glewUniform2iARB = NULL;
PFNGLUNIFORM2IVARBPROC __glewUniform2ivARB = NULL;
PFNGLUNIFORM3FARBPROC __glewUniform3fARB = NULL;
PFNGLUNIFORM3FVARBPROC __glewUniform3fvARB = NULL;
PFNGLUNIFORM3IARBPROC __glewUniform3iARB = NULL;
PFNGLUNIFORM3IVARBPROC __glewUniform3ivARB = NULL;
PFNGLUNIFORM4FARBPROC __glewUniform4fARB = NULL;
PFNGLUNIFORM4FVARBPROC __glewUniform4fvARB = NULL;
PFNGLUNIFORM4IARBPROC __glewUniform4iARB = NULL;
PFNGLUNIFORM4IVARBPROC __glewUniform4ivARB = NULL;
PFNGLUNIFORMMATRIX2FVARBPROC __glewUniformMatrix2fvARB = NULL;
PFNGLUNIFORMMATRIX3FVARBPROC __glewUniformMatrix3fvARB = NULL;
PFNGLUNIFORMMATRIX4FVARBPROC __glewUniformMatrix4fvARB = NULL;
PFNGLUSEPROGRAMOBJECTARBPROC __glewUseProgramObjectARB = NULL;
PFNGLVALIDATEPROGRAMARBPROC __glewValidateProgramARB = NULL;

PFNGLGETACTIVESUBROUTINENAMEPROC __glewGetActiveSubroutineName = NULL;
PFNGLGETACTIVESUBROUTINEUNIFORMNAMEPROC __glewGetActiveSubroutineUniformName = NULL;
PFNGLGETACTIVESUBROUTINEUNIFORMIVPROC __glewGetActiveSubroutineUniformiv = NULL;
PFNGLGETPROGRAMSTAGEIVPROC __glewGetProgramStageiv = NULL;
PFNGLGETSUBROUTINEINDEXPROC __glewGetSubroutineIndex = NULL;
PFNGLGETSUBROUTINEUNIFORMLOCATIONPROC __glewGetSubroutineUniformLocation = NULL;
PFNGLGETUNIFORMSUBROUTINEUIVPROC __glewGetUniformSubroutineuiv = NULL;
PFNGLUNIFORMSUBROUTINESUIVPROC __glewUniformSubroutinesuiv = NULL;

PFNGLCOMPILESHADERINCLUDEARBPROC __glewCompileShaderIncludeARB = NULL;
PFNGLDELETENAMEDSTRINGARBPROC __glewDeleteNamedStringARB = NULL;
PFNGLGETNAMEDSTRINGARBPROC __glewGetNamedStringARB = NULL;
PFNGLGETNAMEDSTRINGIVARBPROC __glewGetNamedStringivARB = NULL;
PFNGLISNAMEDSTRINGARBPROC __glewIsNamedStringARB = NULL;
PFNGLNAMEDSTRINGARBPROC __glewNamedStringARB = NULL;

PFNGLCLIENTWAITSYNCPROC __glewClientWaitSync = NULL;
PFNGLDELETESYNCPROC __glewDeleteSync = NULL;
PFNGLFENCESYNCPROC __glewFenceSync = NULL;
PFNGLGETINTEGER64VPROC __glewGetInteger64v = NULL;
PFNGLGETSYNCIVPROC __glewGetSynciv = NULL;
PFNGLISSYNCPROC __glewIsSync = NULL;
PFNGLWAITSYNCPROC __glewWaitSync = NULL;

PFNGLPATCHPARAMETERFVPROC __glewPatchParameterfv = NULL;
PFNGLPATCHPARAMETERIPROC __glewPatchParameteri = NULL;

PFNGLTEXBUFFERARBPROC __glewTexBufferARB = NULL;

PFNGLCOMPRESSEDTEXIMAGE1DARBPROC __glewCompressedTexImage1DARB = NULL;
PFNGLCOMPRESSEDTEXIMAGE2DARBPROC __glewCompressedTexImage2DARB = NULL;
PFNGLCOMPRESSEDTEXIMAGE3DARBPROC __glewCompressedTexImage3DARB = NULL;
PFNGLCOMPRESSEDTEXSUBIMAGE1DARBPROC __glewCompressedTexSubImage1DARB = NULL;
PFNGLCOMPRESSEDTEXSUBIMAGE2DARBPROC __glewCompressedTexSubImage2DARB = NULL;
PFNGLCOMPRESSEDTEXSUBIMAGE3DARBPROC __glewCompressedTexSubImage3DARB = NULL;
PFNGLGETCOMPRESSEDTEXIMAGEARBPROC __glewGetCompressedTexImageARB = NULL;

PFNGLGETMULTISAMPLEFVPROC __glewGetMultisamplefv = NULL;
PFNGLSAMPLEMASKIPROC __glewSampleMaski = NULL;
PFNGLTEXIMAGE2DMULTISAMPLEPROC __glewTexImage2DMultisample = NULL;
PFNGLTEXIMAGE3DMULTISAMPLEPROC __glewTexImage3DMultisample = NULL;

PFNGLGETQUERYOBJECTI64VPROC __glewGetQueryObjecti64v = NULL;
PFNGLGETQUERYOBJECTUI64VPROC __glewGetQueryObjectui64v = NULL;
PFNGLQUERYCOUNTERPROC __glewQueryCounter = NULL;

PFNGLBINDTRANSFORMFEEDBACKPROC __glewBindTransformFeedback = NULL;
PFNGLDELETETRANSFORMFEEDBACKSPROC __glewDeleteTransformFeedbacks = NULL;
PFNGLDRAWTRANSFORMFEEDBACKPROC __glewDrawTransformFeedback = NULL;
PFNGLGENTRANSFORMFEEDBACKSPROC __glewGenTransformFeedbacks = NULL;
PFNGLISTRANSFORMFEEDBACKPROC __glewIsTransformFeedback = NULL;
PFNGLPAUSETRANSFORMFEEDBACKPROC __glewPauseTransformFeedback = NULL;
PFNGLRESUMETRANSFORMFEEDBACKPROC __g…

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