glew.c

这是在GPU上进行高速数字计算的数学库函数

/*
** The OpenGL Extension Wrangler Library
** Copyright (C) 2004, 2003, 2002, Milan Ikits <milan ikits[at]ieee org>
** Copyright (C) 2004, 2003, 2002, Marcelo E. Magallon <mmagallo[at]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.
*/

#include <glew.h>
#if defined(_WIN32)
#  include <wglew.h>
#elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
#  include <glxew.h>
#endif

#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

#if defined(__APPLE__)
#include <mach-o/dyld.h>
#include <stdlib.h>
#include <string.h>

static void *NSGLGetProcAddress (const GLubyte *name)
{
  NSSymbol symbol;
  char *symbolName;
  /* 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);
  free(symbolName);
  return symbol ? NSAddressOfSymbol(symbol) : NULL;
}
#endif /* __APPLE__ */

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

static 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 */

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

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

GLboolean __GLEW_VERSION_1_1 = GL_FALSE;
GLboolean __GLXEW_VERSION_1_0 = GL_FALSE;
GLboolean __GLXEW_VERSION_1_1 = GL_FALSE;


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;
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;