source/mupen64plus-video-arachnoid/src/MultiTexturingExt.cpp

   1 /******************************************************************************
   2  * Arachnoid Graphics Plugin for Mupen64Plus
   3  * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/
   4  *
   5  * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  20  *****************************************************************************/
  21
  22 #include "MultiTexturingExt.h"
  23 #include "ExtensionChecker.h"
  24
  25
  26 //Multi Texturing functions
  27 #if !defined(GL_GLEXT_VERSION) && !defined(HAVE_GLES)
  28 PFNGLACTIVETEXTUREARBPROC glActiveTextureARB;
  29 PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTextureARB;
  30 PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2fARB;
  31 #endif
  32 bool g_MultiTextureARBSupport = false;
  33
  34 //-----------------------------------------------------------------------------
  35 //! Function for initializeing multitextureing extensions
  36 //-----------------------------------------------------------------------------
  37 bool initializeMultiTexturingExtensions()
  38 {
  39     //Initialize Extentions
  40 #ifdef HAVE_GLES
  41         g_MultiTextureARBSupport = true;
  42         return true;
  43 #else
  44     g_MultiTextureARBSupport = isExtensionSupported("GL_ARB_multitexture");
  45     if ( g_MultiTextureARBSupport )
  46     {
  47 #ifndef GL_GLEXT_VERSION
  48         glActiveTextureARB          = (PFNGLACTIVETEXTUREARBPROC)wglGetProcAddress( "glActiveTextureARB" );
  49         glClientActiveTextureARB    = (PFNGLCLIENTACTIVETEXTUREARBPROC)wglGetProcAddress( "glClientActiveTextureARB" );
  50         glMultiTexCoord2fARB        = (PFNGLMULTITEXCOORD2FARBPROC)wglGetProcAddress( "glMultiTexCoord2fARB" );
  51 #endif
  52         return true;
  53     }
  54     return false;
  55 #endif
  56 }