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      1 #ifndef __gl_core_h_
      2 #define __gl_core_h_
      3 
      4 /*
      5  * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
      6  * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
      7  *
      8  * Permission is hereby granted, free of charge, to any person obtaining a
      9  * copy of this software and associated documentation files (the "Software"),
     10  * to deal in the Software without restriction, including without limitation
     11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     12  * and/or sell copies of the Software, and to permit persons to whom the
     13  * Software is furnished to do so, subject to the following conditions:
     14  *
     15  * The above copyright notice including the dates of first publication and
     16  * either this permission notice or a reference to
     17  * http://oss.sgi.com/projects/FreeB/
     18  * shall be included in all copies or substantial portions of the Software.
     19  *
     20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     23  * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     24  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
     25  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     26  * SOFTWARE.
     27  *
     28  * Except as contained in this notice, the name of Silicon Graphics, Inc.
     29  * shall not be used in advertising or otherwise to promote the sale, use or
     30  * other dealings in this Software without prior written authorization from
     31  * Silicon Graphics, Inc.
     32  */
     33 
     34 #if !defined(_WIN32_WCE)
     35 #include <sys/types.h>
     36 #endif
     37 
     38 #define GL_CORE_SGI  1
     39 #define GL_CORE_MESA 2
     40 #define GL_CORE_APPLE 4
     41 #define GL_CORE_WINDOWS 8
     42 
     43 typedef struct __GLcontextRec __GLcontext;
     44 
     45 /*
     46 ** This file defines the interface between the GL core and the surrounding
     47 ** "operating system" that supports it (currently the GLX or WGL extensions).
     48 **
     49 ** Members (data and function pointers) are documented as imported or
     50 ** exported according to how they are used by the core rendering functions.
     51 ** Imported members are initialized by the "operating system" and used by
     52 ** the core functions.  Exported members are initialized by the core functions
     53 ** and used by the "operating system".
     54 */
     55 
     56 /**
     57  * Mode and limit information for a context.  This information is
     58  * kept around in the context so that values can be used during
     59  * command execution, and for returning information about the
     60  * context to the application.
     61  *
     62  * Instances of this structure are shared by the driver and the loader.  To
     63  * maintain binary compatability, new fields \b must be added only to the
     64  * end of the structure.
     65  *
     66  * \sa _gl_context_modes_create
     67  */
     68 typedef struct __GLcontextModesRec {
     69     struct __GLcontextModesRec * next;
     70 
     71     GLboolean rgbMode;
     72     GLboolean floatMode;
     73     GLboolean colorIndexMode;
     74     GLuint doubleBufferMode;
     75     GLuint stereoMode;
     76 
     77     GLboolean haveAccumBuffer;
     78     GLboolean haveDepthBuffer;
     79     GLboolean haveStencilBuffer;
     80 
     81     GLint redBits, greenBits, blueBits, alphaBits;	/* bits per comp */
     82     GLuint redMask, greenMask, blueMask, alphaMask;
     83     GLint rgbBits;		/* total bits for rgb */
     84     GLint indexBits;		/* total bits for colorindex */
     85 
     86     GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
     87     GLint depthBits;
     88     GLint stencilBits;
     89 
     90     GLint numAuxBuffers;
     91 
     92     GLint level;
     93 
     94     GLint pixmapMode;
     95 
     96     /* GLX */
     97     GLint visualID;
     98     GLint visualType;     /**< One of the GLX X visual types. (i.e.,
     99 			   * \c GLX_TRUE_COLOR, etc.)
    100 			   */
    101 
    102     /* EXT_visual_rating / GLX 1.2 */
    103     GLint visualRating;
    104 
    105     /* EXT_visual_info / GLX 1.2 */
    106     GLint transparentPixel;
    107 				/*    colors are floats scaled to ints */
    108     GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;
    109     GLint transparentIndex;
    110 
    111     /* ARB_multisample / SGIS_multisample */
    112     GLint sampleBuffers;
    113     GLint samples;
    114 
    115     /* SGIX_fbconfig / GLX 1.3 */
    116     GLint drawableType;
    117     GLint renderType;
    118     GLint xRenderable;
    119     GLint fbconfigID;
    120 
    121     /* SGIX_pbuffer / GLX 1.3 */
    122     GLint maxPbufferWidth;
    123     GLint maxPbufferHeight;
    124     GLint maxPbufferPixels;
    125     GLint optimalPbufferWidth;   /* Only for SGIX_pbuffer. */
    126     GLint optimalPbufferHeight;  /* Only for SGIX_pbuffer. */
    127 
    128     /* SGIX_visual_select_group */
    129     GLint visualSelectGroup;
    130 
    131     /* OML_swap_method */
    132     GLint swapMethod;
    133 
    134     GLint screen;
    135 
    136     /* EXT_texture_from_pixmap */
    137     GLint bindToTextureRgb;
    138     GLint bindToTextureRgba;
    139     GLint bindToMipmapTexture;
    140     GLint bindToTextureTargets;
    141     GLint yInverted;
    142 } __GLcontextModes;
    143 
    144 /* Several fields of __GLcontextModes can take these as values.  Since
    145  * GLX header files may not be available everywhere they need to be used,
    146  * redefine them here.
    147  */
    148 #define GLX_NONE                           0x8000
    149 #define GLX_SLOW_CONFIG                    0x8001
    150 #define GLX_TRUE_COLOR                     0x8002
    151 #define GLX_DIRECT_COLOR                   0x8003
    152 #define GLX_PSEUDO_COLOR                   0x8004
    153 #define GLX_STATIC_COLOR                   0x8005
    154 #define GLX_GRAY_SCALE                     0x8006
    155 #define GLX_STATIC_GRAY                    0x8007
    156 #define GLX_TRANSPARENT_RGB                0x8008
    157 #define GLX_TRANSPARENT_INDEX              0x8009
    158 #define GLX_NON_CONFORMANT_CONFIG          0x800D
    159 #define GLX_SWAP_EXCHANGE_OML              0x8061
    160 #define GLX_SWAP_COPY_OML                  0x8062
    161 #define GLX_SWAP_UNDEFINED_OML             0x8063
    162 
    163 #define GLX_DONT_CARE                      0xFFFFFFFF
    164 
    165 #define GLX_RGBA_BIT                       0x00000001
    166 #define GLX_COLOR_INDEX_BIT                0x00000002
    167 #define GLX_WINDOW_BIT                     0x00000001
    168 #define GLX_PIXMAP_BIT                     0x00000002
    169 #define GLX_PBUFFER_BIT                    0x00000004
    170 
    171 #define GLX_BIND_TO_TEXTURE_RGB_EXT        0x20D0
    172 #define GLX_BIND_TO_TEXTURE_RGBA_EXT       0x20D1
    173 #define GLX_BIND_TO_MIPMAP_TEXTURE_EXT     0x20D2
    174 #define GLX_BIND_TO_TEXTURE_TARGETS_EXT    0x20D3
    175 #define GLX_Y_INVERTED_EXT                 0x20D4
    176 
    177 #define GLX_TEXTURE_1D_BIT_EXT             0x00000001
    178 #define GLX_TEXTURE_2D_BIT_EXT             0x00000002
    179 #define GLX_TEXTURE_RECTANGLE_BIT_EXT      0x00000004
    180 
    181 #endif /* __gl_core_h_ */
    182