source/rice_gles/src/OGLExtensions.cpp

   1 /* OGLExtensions.cpp
   2 Copyright (C) 2009 Richard Goedeken
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17 */
  18
  19 /* This source file contains code for assigning function pointers to some OpenGL functions */
  20 /* This is only necessary because Windows does not contain development support for OpenGL versions beyond 1.1 */
  21
  22 #ifdef HAVE_GLES
  23 #include <SDL_opengles.h>
  24 #else
  25 #include <SDL_opengl.h>
  26 #endif
  27 #include "OGLExtensions.h"
  28 #include "Video.h"
  29
  30 static void APIENTRY EmptyFunc(void) { return; }
  31
  32
  33 bool                                 bNvidiaExtensionsSupported = false;
  34 #ifndef HAVE_GLES
  35 PFUNCGLCOMBINERPARAMETERFVNVPROC     pglCombinerParameterfvNV = (PFUNCGLCOMBINERPARAMETERFVNVPROC) EmptyFunc3;
  36 PFUNCGLFINALCOMBINERINPUTNVPROC      pglFinalCombinerInputNV = (PFUNCGLFINALCOMBINERINPUTNVPROC) EmptyFunc;
  37 PFUNCGLCOMBINEROUTPUTNVPROC          pglCombinerOutputNV = (PFUNCGLCOMBINEROUTPUTNVPROC) EmptyFunc;
  38 PFUNCGLCOMBINERINPUTNVPROC           pglCombinerInputNV = (PFUNCGLCOMBINERINPUTNVPROC) EmptyFunc;
  39 PFUNCGLCOMBINERPARAMETERINVPROC      pglCombinerParameteriNV = (PFUNCGLCOMBINERPARAMETERINVPROC) EmptyFunc;
  40
  41 PFUNCGLACTIVETEXTUREPROC             pglActiveTexture = (PFUNCGLACTIVETEXTUREPROC) EmptyFunc;
  42 PFUNCGLACTIVETEXTUREARBPROC          pglActiveTextureARB = (PFUNCGLACTIVETEXTUREARBPROC) EmptyFunc;
  43 PFUNCGLMULTITEXCOORD2FPROC           pglMultiTexCoord2f = (PFUNCGLMULTITEXCOORD2FPROC) EmptyFunc;
  44 PFUNCGLMULTITEXCOORD2FVPROC          pglMultiTexCoord2fv = (PFUNCGLMULTITEXCOORD2FVPROC) EmptyFunc;
  45 PFUNCGLDELETEPROGRAMSARBPROC         pglDeleteProgramsARB = (PFUNCGLDELETEPROGRAMSARBPROC) EmptyFunc;
  46 PFUNCGLPROGRAMSTRINGARBPROC          pglProgramStringARB = (PFUNCGLPROGRAMSTRINGARBPROC) EmptyFunc;
  47 PFUNCGLBINDPROGRAMARBPROC            pglBindProgramARB = (PFUNCGLBINDPROGRAMARBPROC) EmptyFunc;
  48 PFUNCGLGENPROGRAMSARBPROC            pglGenProgramsARB = (PFUNCGLGENPROGRAMSARBPROC) EmptyFunc;
  49 PFUNCGLPROGRAMENVPARAMETER4FVARBPROC pglProgramEnvParameter4fvARB = (PFUNCGLPROGRAMENVPARAMETER4FVARBPROC) EmptyFunc;
  50 PFUNCGLFOGCOORDPOINTEREXTPROC        pglFogCoordPointerEXT = (PFUNCGLFOGCOORDPOINTEREXTPROC) EmptyFunc;
  51 PFUNCGLCLIENTACTIVETEXTUREARBPROC    pglClientActiveTextureARB = (PFUNCGLCLIENTACTIVETEXTUREARBPROC) EmptyFunc2;
  52
  53 #define INIT_ENTRY_POINT(type, funcname) \
  54   p##funcname = (type) CoreVideo_GL_GetProcAddress(#funcname); \
  55   if (p##funcname == NULL) { DebugMessage(M64MSG_WARNING, \
  56   "Couldn't get address of OpenGL function: '%s'", #funcname); p##funcname = (type) EmptyFunc; }
  57
  58 #endif
  59
  60 void OGLExtensions_Init(void)
  61 {
  62 #ifdef HAVE_GLES
  63     bNvidiaExtensionsSupported = false;
  64 #else
  65     /* nvidia extensions are a special case */
  66     bNvidiaExtensionsSupported = true;
  67     pglCombinerParameterfvNV = (PFUNCGLCOMBINERPARAMETERFVNVPROC) CoreVideo_GL_GetProcAddress("glCombinerParameterfvNV");
  68     if (pglCombinerParameterfvNV == NULL) bNvidiaExtensionsSupported = false;
  69     pglFinalCombinerInputNV = (PFUNCGLFINALCOMBINERINPUTNVPROC) CoreVideo_GL_GetProcAddress("glFinalCombinerInputNV");
  70     if (pglFinalCombinerInputNV == NULL) bNvidiaExtensionsSupported = false;
  71     pglCombinerOutputNV = (PFUNCGLCOMBINEROUTPUTNVPROC) CoreVideo_GL_GetProcAddress("glCombinerOutputNV");
  72     if (pglCombinerOutputNV == NULL) bNvidiaExtensionsSupported = false;
  73     pglCombinerInputNV = (PFUNCGLCOMBINERINPUTNVPROC) CoreVideo_GL_GetProcAddress("glCombinerInputNV");
  74     if (pglCombinerInputNV == NULL) bNvidiaExtensionsSupported = false;
  75     pglCombinerParameteriNV = (PFUNCGLCOMBINERPARAMETERINVPROC) CoreVideo_GL_GetProcAddress("glCombinerParameteriNV");
  76     if (pglCombinerParameteriNV == NULL) bNvidiaExtensionsSupported = false;
  77
  78     INIT_ENTRY_POINT(PFUNCGLACTIVETEXTUREPROC,             glActiveTexture);
  79     INIT_ENTRY_POINT(PFUNCGLACTIVETEXTUREARBPROC,          glActiveTextureARB);
  80     INIT_ENTRY_POINT(PFUNCGLMULTITEXCOORD2FPROC,           glMultiTexCoord2f);
  81     INIT_ENTRY_POINT(PFUNCGLMULTITEXCOORD2FVPROC,          glMultiTexCoord2fv);
  82     INIT_ENTRY_POINT(PFUNCGLDELETEPROGRAMSARBPROC,         glDeleteProgramsARB);
  83     INIT_ENTRY_POINT(PFUNCGLPROGRAMSTRINGARBPROC,          glProgramStringARB);
  84     INIT_ENTRY_POINT(PFUNCGLBINDPROGRAMARBPROC,            glBindProgramARB);
  85     INIT_ENTRY_POINT(PFUNCGLGENPROGRAMSARBPROC,            glGenProgramsARB);
  86     INIT_ENTRY_POINT(PFUNCGLPROGRAMENVPARAMETER4FVARBPROC, glProgramEnvParameter4fvARB);
  87     INIT_ENTRY_POINT(PFUNCGLFOGCOORDPOINTEREXTPROC,        glFogCoordPointerEXT);
  88     INIT_ENTRY_POINT(PFUNCGLCLIENTACTIVETEXTUREARBPROC,    glClientActiveTextureARB);
  89 #endif
  90 }
  91
  92