Rice Video Plugin for GLES1.1

[mupen64plus-pandora.git] / source / rice_gles / src / OGLExtensions.cpp

diff --git a/source/rice_gles/src/OGLExtensions.cpp b/source/rice_gles/src/OGLExtensions.cpp
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+/* OGLExtensions.cpp
+Copyright (C) 2009 Richard Goedeken
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+/* This source file contains code for assigning function pointers to some OpenGL functions */
+/* This is only necessary because Windows does not contain development support for OpenGL versions beyond 1.1 */
+
+#ifdef HAVE_GLES
+#include <SDL_opengles.h>
+#else
+#include <SDL_opengl.h>
+#endif
+#include "OGLExtensions.h"
+#include "Video.h"
+
+static void APIENTRY EmptyFunc(void) { return; }
+
+
+bool                                 bNvidiaExtensionsSupported = false;
+#ifndef HAVE_GLES
+PFUNCGLCOMBINERPARAMETERFVNVPROC     pglCombinerParameterfvNV = (PFUNCGLCOMBINERPARAMETERFVNVPROC) EmptyFunc3;
+PFUNCGLFINALCOMBINERINPUTNVPROC      pglFinalCombinerInputNV = (PFUNCGLFINALCOMBINERINPUTNVPROC) EmptyFunc;
+PFUNCGLCOMBINEROUTPUTNVPROC          pglCombinerOutputNV = (PFUNCGLCOMBINEROUTPUTNVPROC) EmptyFunc;
+PFUNCGLCOMBINERINPUTNVPROC           pglCombinerInputNV = (PFUNCGLCOMBINERINPUTNVPROC) EmptyFunc;
+PFUNCGLCOMBINERPARAMETERINVPROC      pglCombinerParameteriNV = (PFUNCGLCOMBINERPARAMETERINVPROC) EmptyFunc;
+
+PFUNCGLACTIVETEXTUREPROC             pglActiveTexture = (PFUNCGLACTIVETEXTUREPROC) EmptyFunc;
+PFUNCGLACTIVETEXTUREARBPROC          pglActiveTextureARB = (PFUNCGLACTIVETEXTUREARBPROC) EmptyFunc;
+PFUNCGLMULTITEXCOORD2FPROC           pglMultiTexCoord2f = (PFUNCGLMULTITEXCOORD2FPROC) EmptyFunc;
+PFUNCGLMULTITEXCOORD2FVPROC          pglMultiTexCoord2fv = (PFUNCGLMULTITEXCOORD2FVPROC) EmptyFunc;
+PFUNCGLDELETEPROGRAMSARBPROC         pglDeleteProgramsARB = (PFUNCGLDELETEPROGRAMSARBPROC) EmptyFunc;
+PFUNCGLPROGRAMSTRINGARBPROC          pglProgramStringARB = (PFUNCGLPROGRAMSTRINGARBPROC) EmptyFunc;
+PFUNCGLBINDPROGRAMARBPROC            pglBindProgramARB = (PFUNCGLBINDPROGRAMARBPROC) EmptyFunc;
+PFUNCGLGENPROGRAMSARBPROC            pglGenProgramsARB = (PFUNCGLGENPROGRAMSARBPROC) EmptyFunc;
+PFUNCGLPROGRAMENVPARAMETER4FVARBPROC pglProgramEnvParameter4fvARB = (PFUNCGLPROGRAMENVPARAMETER4FVARBPROC) EmptyFunc;
+PFUNCGLFOGCOORDPOINTEREXTPROC        pglFogCoordPointerEXT = (PFUNCGLFOGCOORDPOINTEREXTPROC) EmptyFunc;
+PFUNCGLCLIENTACTIVETEXTUREARBPROC    pglClientActiveTextureARB = (PFUNCGLCLIENTACTIVETEXTUREARBPROC) EmptyFunc2;
+
+#define INIT_ENTRY_POINT(type, funcname) \
+  p##funcname = (type) CoreVideo_GL_GetProcAddress(#funcname); \
+  if (p##funcname == NULL) { DebugMessage(M64MSG_WARNING, \
+  "Couldn't get address of OpenGL function: '%s'", #funcname); p##funcname = (type) EmptyFunc; }
+
+#endif
+
+void OGLExtensions_Init(void)
+{
+#ifdef HAVE_GLES
+    bNvidiaExtensionsSupported = false;
+#else
+    /* nvidia extensions are a special case */
+    bNvidiaExtensionsSupported = true;
+    pglCombinerParameterfvNV = (PFUNCGLCOMBINERPARAMETERFVNVPROC) CoreVideo_GL_GetProcAddress("glCombinerParameterfvNV");
+    if (pglCombinerParameterfvNV == NULL) bNvidiaExtensionsSupported = false;
+    pglFinalCombinerInputNV = (PFUNCGLFINALCOMBINERINPUTNVPROC) CoreVideo_GL_GetProcAddress("glFinalCombinerInputNV");
+    if (pglFinalCombinerInputNV == NULL) bNvidiaExtensionsSupported = false;
+    pglCombinerOutputNV = (PFUNCGLCOMBINEROUTPUTNVPROC) CoreVideo_GL_GetProcAddress("glCombinerOutputNV");
+    if (pglCombinerOutputNV == NULL) bNvidiaExtensionsSupported = false;
+    pglCombinerInputNV = (PFUNCGLCOMBINERINPUTNVPROC) CoreVideo_GL_GetProcAddress("glCombinerInputNV");
+    if (pglCombinerInputNV == NULL) bNvidiaExtensionsSupported = false;
+    pglCombinerParameteriNV = (PFUNCGLCOMBINERPARAMETERINVPROC) CoreVideo_GL_GetProcAddress("glCombinerParameteriNV");
+    if (pglCombinerParameteriNV == NULL) bNvidiaExtensionsSupported = false;
+
+    INIT_ENTRY_POINT(PFUNCGLACTIVETEXTUREPROC,             glActiveTexture);
+    INIT_ENTRY_POINT(PFUNCGLACTIVETEXTUREARBPROC,          glActiveTextureARB);
+    INIT_ENTRY_POINT(PFUNCGLMULTITEXCOORD2FPROC,           glMultiTexCoord2f);
+    INIT_ENTRY_POINT(PFUNCGLMULTITEXCOORD2FVPROC,          glMultiTexCoord2fv);
+    INIT_ENTRY_POINT(PFUNCGLDELETEPROGRAMSARBPROC,         glDeleteProgramsARB);
+    INIT_ENTRY_POINT(PFUNCGLPROGRAMSTRINGARBPROC,          glProgramStringARB);
+    INIT_ENTRY_POINT(PFUNCGLBINDPROGRAMARBPROC,            glBindProgramARB);
+    INIT_ENTRY_POINT(PFUNCGLGENPROGRAMSARBPROC,            glGenProgramsARB);
+    INIT_ENTRY_POINT(PFUNCGLPROGRAMENVPARAMETER4FVARBPROC, glProgramEnvParameter4fvARB);
+    INIT_ENTRY_POINT(PFUNCGLFOGCOORDPOINTEREXTPROC,        glFogCoordPointerEXT);
+    INIT_ENTRY_POINT(PFUNCGLCLIENTACTIVETEXTUREARBPROC,    glClientActiveTextureARB);
+#endif
+}
+
+