vcs.maemo.org Git - neverball/blob - share/glext.h

   1 /*
   2  * Copyright (C) 2003-2011 Neverball authors
   3  *
   4  * NEVERBALL is  free software; you can redistribute  it and/or modify
   5  * it under the  terms of the GNU General  Public License as published
   6  * by the Free  Software Foundation; either version 2  of the License,
   7  * or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT  ANY  WARRANTY;  without   even  the  implied  warranty  of
  11  * MERCHANTABILITY or  FITNESS FOR A PARTICULAR PURPOSE.   See the GNU
  12  * General Public License for more details.
  13  */
  14
  15 #ifndef GLEXT_H
  16 #define GLEXT_H
  17
  18 /*---------------------------------------------------------------------------*/
  19 /* Include the system OpenGL headers.                                        */
  20
  21 #ifdef _WIN32
  22 #define WIN32_LEAN_AND_MEAN
  23 #include <windows.h>
  24 #endif
  25
  26 #ifdef __APPLE__
  27 #include <OpenGL/gl.h>
  28 #elif defined(__MAEMO__)
  29 #include <GLES/gl.h>
  30 #else
  31 #include <GL/gl.h>
  32 #endif
  33
  34 #ifdef _WIN32
  35 #include <GL/glext.h>
  36 #endif
  37
  38 /*---------------------------------------------------------------------------*/
  39
  40 #ifndef GL_MULTISAMPLE
  41 #define GL_MULTISAMPLE                0x809D
  42 #endif
  43
  44 #ifndef GL_TEXTURE0
  45 #define GL_TEXTURE0                   0x84C0
  46 #endif
  47
  48 #ifndef GL_TEXTURE1
  49 #define GL_TEXTURE1                   0x84C1
  50 #endif
  51
  52 #ifndef GL_TEXTURE2
  53 #define GL_TEXTURE2                   0x84C2
  54 #endif
  55
  56 #ifndef GL_ARRAY_BUFFER
  57 #define GL_ARRAY_BUFFER               0x8892
  58 #endif
  59
  60 #ifndef GL_ELEMENT_ARRAY_BUFFER
  61 #define GL_ELEMENT_ARRAY_BUFFER       0x8893
  62 #endif
  63
  64 #ifndef GL_STATC_DRAW
  65 #define GL_STATIC_DRAW                0x88E4
  66 #endif
  67
  68 #ifndef GL_DYNAMIC_DRAW
  69 #define GL_DYNAMIC_DRAW               0x88E8
  70 #endif
  71
  72 #ifndef GL_POINT_SPRITE
  73 #define GL_POINT_SPRITE               0x8861
  74 #endif
  75
  76 #ifndef GL_COORD_REPLACE
  77 #define GL_COORD_REPLACE              0x8862
  78 #endif
  79
  80 #ifndef GL_POINT_DISTANCE_ATTENUATIAN
  81 #define GL_POINT_DISTANCE_ATTENUATION 0x8129
  82 #endif
  83
  84 /*---------------------------------------------------------------------------*/
  85
  86 int glext_check(const char *);
  87 int glext_init(void);
  88
  89 /*---------------------------------------------------------------------------*/
  90
  91 /* Exercise extreme paranoia in defining a cross-platform OpenGL interface.  */
  92 /* If we're compiling against OpenGL ES then we must assume native linkage   */
  93 /* of the extensions we use. Otherwise, GetProc them regardless of whether   */
  94 /* they need it or not.                                                      */
  95
  96 #if defined(GL_VERSION_ES_CM_1_0) || \
  97     defined(GL_VERSION_ES_CM_1_1) || \
  98     defined(GL_OES_VERSION_1_0)
  99
 100 #define ENABLE_OPENGLES 1
 101
 102 #define glClientActiveTexture_ glClientActiveTexture
 103 #define glActiveTexture_       glActiveTexture
 104 #define glGenBuffers_          glGenBuffers
 105 #define glBindBuffer_          glBindBuffer
 106 #define glBufferData_          glBufferData
 107 #define glBufferSubData_       glBufferSubData
 108 #define glDeleteBuffers_       glDeleteBuffers
 109 #define glIsBuffer_            glIsBuffer
 110 #define glPointParameterfv_    glPointParameterfv
 111
 112 #define glOrtho_               glOrthof
 113
 114 #else /* No native linkage?  Define the extension API. */
 115
 116 #define glOrtho_               glOrtho
 117
 118 /*---------------------------------------------------------------------------*/
 119 /* ARB_multitexture                                                          */
 120
 121 typedef void (*PFNGLACTIVETEXTURE_PROC)(GLenum);
 122 typedef void (*PFNGLCLIENTACTIVETEXTURE_PROC)(GLenum);
 123
 124 extern PFNGLCLIENTACTIVETEXTURE_PROC glClientActiveTexture_;
 125 extern PFNGLACTIVETEXTURE_PROC       glActiveTexture_;
 126
 127 /*---------------------------------------------------------------------------*/
 128 /* ARB_vertex_buffer_object                                                  */
 129
 130 typedef void      (*PFNGLGENBUFFERS_PROC)(GLsizei, GLuint *);
 131 typedef void      (*PFNGLBINDBUFFER_PROC)(GLenum, GLuint);
 132 typedef void      (*PFNGLBUFFERDATA_PROC)(GLenum, GLsizeiptr, const GLvoid *, GLenum);
 133 typedef void      (*PFNGLBUFFERSUBDATA_PROC)(GLenum, GLintptr, GLsizeiptr, const GLvoid *);
 134 typedef void      (*PFNGLDELETEBUFFERS_PROC)(GLsizei, const GLuint *);
 135 typedef GLboolean (*PFNGLISBUFFER_PROC)(GLuint);
 136
 137 extern PFNGLGENBUFFERS_PROC    glGenBuffers_;
 138 extern PFNGLBINDBUFFER_PROC    glBindBuffer_;
 139 extern PFNGLBUFFERDATA_PROC    glBufferData_;
 140 extern PFNGLBUFFERSUBDATA_PROC glBufferSubData_;
 141 extern PFNGLDELETEBUFFERS_PROC glDeleteBuffers_;
 142 extern PFNGLISBUFFER_PROC      glIsBuffer_;
 143
 144 /*---------------------------------------------------------------------------*/
 145 /* ARB_point_parameters                                                      */
 146
 147 typedef void (*PFNGLPOINTPARAMETERFV_PROC)(GLenum, const GLfloat *);
 148
 149 extern PFNGLPOINTPARAMETERFV_PROC glPointParameterfv_;
 150
 151 /*---------------------------------------------------------------------------*/
 152 #endif /* !ENABLE_OPENGLES */
 153
 154 void glClipPlane4f_(GLenum, GLfloat, GLfloat, GLfloat, GLfloat);
 155
 156 /*---------------------------------------------------------------------------*/
 157
 158 struct gl_info
 159 {
 160     GLint max_texture_units;
 161     GLint max_texture_size;
 162
 163     unsigned int multitexture:1;
 164     unsigned int vertex_buffer_object:1;
 165     unsigned int point_parameters:1;
 166 };
 167
 168 extern struct gl_info gli;
 169
 170 /*---------------------------------------------------------------------------*/
 171 #endif