source/gles2rice/src/osal_opengl.h

   1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   2  *   Mupen64plus - osal_opengl.h                                           *
   3  *   Mupen64Plus homepage: http://code.google.com/p/mupen64plus/           *
   4  *   Copyright (C) 2013 Richard Goedeken                                   *
   5  *                                                                         *
   6  *   This program is free software; you can redistribute it and/or modify  *
   7  *   it under the terms of the GNU General Public License as published by  *
   8  *   the Free Software Foundation; either version 2 of the License, or     *
   9  *   (at your option) any later version.                                   *
  10  *                                                                         *
  11  *   This program is distributed in the hope that it will be useful,       *
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  14  *   GNU General Public License for more details.                          *
  15  *                                                                         *
  16  *   You should have received a copy of the GNU General Public License     *
  17  *   along with this program; if not, write to the                         *
  18  *   Free Software Foundation, Inc.,                                       *
  19  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
  20  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  21
  22 #if !defined(OSAL_OPENGL_H)
  23 #define OSAL_OPENGL_H
  24
  25 #include <SDL_config.h>
  26
  27 #undef SDL_VIDEO_OPENGL
  28 #define SDL_VIDEO_OPENGL_ES2 1
  29
  30
  31 #if SDL_VIDEO_OPENGL
  32 #include <SDL_opengl.h>
  33 #define GLSL_VERSION "120"
  34
  35 // Extension names
  36 #define OSAL_GL_ARB_MULTITEXTURE            "GL_ARB_multitexture"
  37 #define OSAL_GL_ARB_TEXTURE_ENV_ADD         "GL_ARB_texture_env_add"
  38
  39
  40
  41 #elif SDL_VIDEO_OPENGL_ES2
  42 #include <SDL_opengles2.h>
  43 #define GLSL_VERSION "100"
  44
  45 // Extension names
  46 #define OSAL_GL_ARB_MULTITEXTURE            "GL_multitexture"
  47 #define OSAL_GL_ARB_TEXTURE_ENV_ADD         "GL_texture_env_add"
  48
  49 // Vertex shader params
  50 #define VS_POSITION                         0
  51 #define VS_COLOR                            1
  52 #define VS_TEXCOORD0                        2
  53 #define VS_TEXCOORD1                        3
  54 #define VS_FOG                              4
  55
  56 // Constant substitutions
  57 #define GL_CLAMP                            GL_CLAMP_TO_EDGE
  58 #define GL_MAX_TEXTURE_UNITS_ARB            GL_MAX_TEXTURE_IMAGE_UNITS
  59 #define GL_MIRRORED_REPEAT_ARB              GL_MIRRORED_REPEAT
  60 #define GL_TEXTURE0_ARB                     GL_TEXTURE0
  61 #define GL_TEXTURE1_ARB                     GL_TEXTURE1
  62 #define GL_TEXTURE2_ARB                     GL_TEXTURE2
  63 #define GL_TEXTURE3_ARB                     GL_TEXTURE3
  64 #define GL_TEXTURE4_ARB                     GL_TEXTURE4
  65 #define GL_TEXTURE5_ARB                     GL_TEXTURE5
  66 #define GL_TEXTURE6_ARB                     GL_TEXTURE6
  67 #define GL_TEXTURE7_ARB                     GL_TEXTURE7
  68
  69 #define GL_ADD                              0x0104
  70 #define GL_MODULATE                         0x2100
  71 #define GL_INTERPOLATE_ARB                  0x8575
  72 #define GL_CONSTANT_ARB                     0x8576
  73 #define GL_PREVIOUS_ARB                     0x8578
  74
  75 // Function substitutions
  76 #define glClearDepth                        glClearDepthf
  77 #define pglActiveTexture                    glActiveTexture
  78 #define pglActiveTextureARB                 glActiveTexture
  79
  80 // No-op substitutions (unavailable in GLES2)
  81 #define glLoadIdentity()
  82 #define glMatrixMode(x)
  83 #define glOrtho(a,b,c,d,e,f)
  84 #define glReadBuffer(x)
  85 #define glTexEnvi(x,y,z)
  86 #define glTexEnvfv(x,y,z)
  87 #define glTexCoord2f(u,v)
  88
  89 #endif // SDL_VIDEO_OPENGL*
  90
  91 #endif // OSAL_OPENGL_H