include/GL/internal/glcore.h

   1 #ifndef __gl_core_h_
   2 #define __gl_core_h_
   3
   4 /*
   5 ** License Applicability. Except to the extent portions of this file are
   6 ** made subject to an alternative license as permitted in the SGI Free
   7 ** Software License B, Version 1.1 (the "License"), the contents of this
   8 ** file are subject only to the provisions of the License. You may not use
   9 ** this file except in compliance with the License. You may obtain a copy
  10 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
  11 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
  12 **
  13 ** http://oss.sgi.com/projects/FreeB
  14 **
  15 ** Note that, as provided in the License, the Software is distributed on an
  16 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  17 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  18 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  19 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  20 **
  21 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  22 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  23 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  24 ** Copyright in any portions created by third parties is as indicated
  25 ** elsewhere herein. All Rights Reserved.
  26 **
  27 ** Additional Notice Provisions: The application programming interfaces
  28 ** established by SGI in conjunction with the Original Code are The
  29 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  30 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  31 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  32 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  33 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  34 ** published by SGI, but has not been independently verified as being
  35 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  36 **
  37 */
  38
  39 #include <sys/types.h>
  40
  41 #define GL_CORE_SGI  1
  42 #define GL_CORE_MESA 2
  43 #define GL_CORE_APPLE 4
  44 #define GL_CORE_WINDOWS 8
  45
  46 typedef struct __GLcontextRec __GLcontext;
  47
  48 /*
  49 ** This file defines the interface between the GL core and the surrounding
  50 ** "operating system" that supports it (currently the GLX or WGL extensions).
  51 **
  52 ** Members (data and function pointers) are documented as imported or
  53 ** exported according to how they are used by the core rendering functions.
  54 ** Imported members are initialized by the "operating system" and used by
  55 ** the core functions.  Exported members are initialized by the core functions
  56 ** and used by the "operating system".
  57 */
  58
  59 /**
  60  * Mode and limit information for a context.  This information is
  61  * kept around in the context so that values can be used during
  62  * command execution, and for returning information about the
  63  * context to the application.
  64  *
  65  * Instances of this structure are shared by the driver and the loader.  To
  66  * maintain binary compatability, new fields \b must be added only to the
  67  * end of the structure.
  68  *
  69  * \sa _gl_context_modes_create
  70  */
  71 typedef struct __GLcontextModesRec {
  72     struct __GLcontextModesRec * next;
  73
  74     GLboolean rgbMode;
  75     GLboolean floatMode;
  76     GLboolean colorIndexMode;
  77     GLuint doubleBufferMode;
  78     GLuint stereoMode;
  79
  80     GLboolean haveAccumBuffer;
  81     GLboolean haveDepthBuffer;
  82     GLboolean haveStencilBuffer;
  83
  84     GLint redBits, greenBits, blueBits, alphaBits;      /* bits per comp */
  85     GLuint redMask, greenMask, blueMask, alphaMask;
  86     GLint rgbBits;              /* total bits for rgb */
  87     GLint indexBits;            /* total bits for colorindex */
  88
  89     GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
  90     GLint depthBits;
  91     GLint stencilBits;
  92
  93     GLint numAuxBuffers;
  94
  95     GLint level;
  96
  97     GLint pixmapMode;
  98
  99     /* GLX */
 100     GLint visualID;
 101     GLint visualType;     /**< One of the GLX X visual types. (i.e.,
 102                            * \c GLX_TRUE_COLOR, etc.)
 103                            */
 104
 105     /* EXT_visual_rating / GLX 1.2 */
 106     GLint visualRating;
 107
 108     /* EXT_visual_info / GLX 1.2 */
 109     GLint transparentPixel;
 110                                 /*    colors are floats scaled to ints */
 111     GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;
 112     GLint transparentIndex;
 113
 114     /* ARB_multisample / SGIS_multisample */
 115     GLint sampleBuffers;
 116     GLint samples;
 117
 118     /* SGIX_fbconfig / GLX 1.3 */
 119     GLint drawableType;
 120     GLint renderType;
 121     GLint xRenderable;
 122     GLint fbconfigID;
 123
 124     /* SGIX_pbuffer / GLX 1.3 */
 125     GLint maxPbufferWidth;
 126     GLint maxPbufferHeight;
 127     GLint maxPbufferPixels;
 128     GLint optimalPbufferWidth;   /* Only for SGIX_pbuffer. */
 129     GLint optimalPbufferHeight;  /* Only for SGIX_pbuffer. */
 130
 131     /* SGIX_visual_select_group */
 132     GLint visualSelectGroup;
 133
 134     /* OML_swap_method */
 135     GLint swapMethod;
 136
 137     GLint screen;
 138
 139     /* EXT_texture_from_pixmap */
 140     GLint bindToTextureRgb;
 141     GLint bindToTextureRgba;
 142     GLint bindToMipmapTexture;
 143     GLint bindToTextureTargets;
 144     GLint yInverted;
 145 } __GLcontextModes;
 146
 147 /* Several fields of __GLcontextModes can take these as values.  Since
 148  * GLX header files may not be available everywhere they need to be used,
 149  * redefine them here.
 150  */
 151 #define GLX_NONE                           0x8000
 152 #define GLX_SLOW_CONFIG                    0x8001
 153 #define GLX_TRUE_COLOR                     0x8002
 154 #define GLX_DIRECT_COLOR                   0x8003
 155 #define GLX_PSEUDO_COLOR                   0x8004
 156 #define GLX_STATIC_COLOR                   0x8005
 157 #define GLX_GRAY_SCALE                     0x8006
 158 #define GLX_STATIC_GRAY                    0x8007
 159 #define GLX_TRANSPARENT_RGB                0x8008
 160 #define GLX_TRANSPARENT_INDEX              0x8009
 161 #define GLX_NON_CONFORMANT_CONFIG          0x800D
 162 #define GLX_SWAP_EXCHANGE_OML              0x8061
 163 #define GLX_SWAP_COPY_OML                  0x8062
 164 #define GLX_SWAP_UNDEFINED_OML             0x8063
 165
 166 #define GLX_DONT_CARE                      0xFFFFFFFF
 167
 168 #define GLX_RGBA_BIT                       0x00000001
 169 #define GLX_COLOR_INDEX_BIT                0x00000002
 170 #define GLX_WINDOW_BIT                     0x00000001
 171 #define GLX_PIXMAP_BIT                     0x00000002
 172 #define GLX_PBUFFER_BIT                    0x00000004
 173
 174 #define GLX_BIND_TO_TEXTURE_RGB_EXT        0x20D0
 175 #define GLX_BIND_TO_TEXTURE_RGBA_EXT       0x20D1
 176 #define GLX_BIND_TO_MIPMAP_TEXTURE_EXT     0x20D2
 177 #define GLX_BIND_TO_TEXTURE_TARGETS_EXT    0x20D3
 178 #define GLX_Y_INVERTED_EXT                 0x20D4
 179
 180 #define GLX_TEXTURE_1D_BIT_EXT             0x00000001
 181 #define GLX_TEXTURE_2D_BIT_EXT             0x00000002
 182 #define GLX_TEXTURE_RECTANGLE_BIT_EXT      0x00000004
 183
 184 #endif /* __gl_core_h_ */