src/mesa/main/config.h

   1 /* $Id: config.h,v 1.20 2000/10/28 18:34:48 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 /*
  29  * Tunable configuration parameters.
  30  */
  31
  32
  33
  34 #ifndef CONFIG_H
  35 #define CONFIG_H
  36
  37 #ifdef HAVE_CONFIG_H
  38 #include "conf.h"
  39 #endif
  40
  41
  42 /*
  43  * OpenGL implementation limits
  44  */
  45
  46 /* Maximum modelview matrix stack depth: */
  47 #define MAX_MODELVIEW_STACK_DEPTH 32
  48
  49 /* Maximum projection matrix stack depth: */
  50 #define MAX_PROJECTION_STACK_DEPTH 32
  51
  52 /* Maximum texture matrix stack depth: */
  53 #define MAX_TEXTURE_STACK_DEPTH 10
  54
  55 /* Maximum color matrix stack depth: */
  56 #define MAX_COLOR_STACK_DEPTH 4
  57
  58 /* Maximum attribute stack depth: */
  59 #define MAX_ATTRIB_STACK_DEPTH 16
  60
  61 /* Maximum client attribute stack depth: */
  62 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  63
  64 /* Maximum recursion depth of display list calls: */
  65 #define MAX_LIST_NESTING 64
  66
  67 /* Maximum number of lights: */
  68 #define MAX_LIGHTS 8
  69
  70 /* Maximum user-defined clipping planes: */
  71 #define MAX_CLIP_PLANES 6
  72
  73 /* Maximum pixel map lookup table size: */
  74 #define MAX_PIXEL_MAP_TABLE 256
  75
  76 /* Number of auxillary color buffers: */
  77 #define NUM_AUX_BUFFERS 0
  78
  79 /* Maximum order (degree) of curves: */
  80 #ifdef AMIGA
  81 #   define MAX_EVAL_ORDER 12
  82 #else
  83 #   define MAX_EVAL_ORDER 30
  84 #endif
  85
  86 /* Maximum Name stack depth */
  87 #define MAX_NAME_STACK_DEPTH 64
  88
  89 /* Min and Max point sizes and granularity */
  90 #define MIN_POINT_SIZE 1.0
  91 #define MAX_POINT_SIZE 10.0
  92 #define POINT_SIZE_GRANULARITY 0.1
  93
  94 /* Min and Max line widths and granularity */
  95 #define MIN_LINE_WIDTH 1.0
  96 #define MAX_LINE_WIDTH 10.0
  97 #define LINE_WIDTH_GRANULARITY 0.1
  98
  99 /* Max texture palette / color table size */
 100 #define MAX_COLOR_TABLE_SIZE 256
 101
 102 /* Number of texture levels */
 103 #define MAX_TEXTURE_LEVELS 12
 104
 105 /* Number of texture units - GL_ARB_multitexture */
 106 #define MAX_TEXTURE_UNITS 3
 107
 108 /* Maximum viewport/image size: */
 109 #define MAX_WIDTH 2048
 110 #define MAX_HEIGHT 1200
 111
 112 /* Maxmimum size for CVA.  May be overridden by the drivers.  */
 113 #define MAX_ARRAY_LOCK_SIZE 3000
 114
 115 /* Subpixel precision for antialiasing, window coordinate snapping */
 116 #define SUB_PIXEL_BITS 4
 117
 118 /* Size of histogram tables */
 119 #define HISTOGRAM_TABLE_SIZE 256
 120
 121 /* Max convolution filter sizes */
 122 #define MAX_CONVOLUTION_WIDTH 9
 123 #define MAX_CONVOLUTION_HEIGHT 9
 124
 125 /* GL_ARB_texture_compression */
 126 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
 127
 128
 129
 130 /*
 131  * Mesa-specific parameters
 132  */
 133
 134
 135 /*
 136  * Bits per accumulation buffer color component:  8 or 16
 137  */
 138 #define ACCUM_BITS 16
 139
 140
 141 /*
 142  * Bits per depth buffer value.  Any reasonable value up to 31 will
 143  * work.  32 doesn't work because of integer overflow problems in the
 144  * rasterizer code.
 145  */
 146 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
 147 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
 148 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
 149 #else
 150 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
 151 #endif
 152
 153
 154
 155 /*
 156  * Bits per stencil value:  8
 157  */
 158 #define STENCIL_BITS 8
 159
 160
 161 /*
 162  * Bits per color channel (must be 8 at this time!)
 163  */
 164 #define CHAN_BITS 8
 165 #define CHAN_MAX ((1 << CHAN_BITS) - 1)
 166 #define CHAN_MAXF ((GLfloat) CHAN_MAX)
 167 #if CHAN_BITS == 8
 168    typedef GLubyte GLchan;
 169 #elif CHAN_BITS == 16
 170    typedef GLushort GLchan;
 171 #else
 172 #error  illegal number of color channel bits
 173 #endif
 174
 175
 176
 177
 178
 179 /*
 180  * Color channel component order
 181  * (changes will almost certainly cause problems at this time)
 182  */
 183 #define RCOMP 0
 184 #define GCOMP 1
 185 #define BCOMP 2
 186 #define ACOMP 3
 187
 188
 189
 190 /* Vertex buffer size.  KW: no restrictions on the divisibility of
 191  * this number, though things may go better for you if you choose a
 192  * value of 12n + 3.
 193  */
 194 #define VB_START  3
 195
 196 #define VB_MAX (216 + VB_START)
 197
 198
 199
 200 /*
 201  * Actual vertex buffer size.
 202  *
 203  * Arrays must also accomodate new vertices from clipping, and
 204  * potential overflow from primitives which don't fit into neatly into
 205  * VB_MAX vertices.  (This only happens when mixed primitives are
 206  * sharing the vb).
 207  */
 208 #define VB_MAX_CLIPPED_VERTS ((2 * (6 + MAX_CLIP_PLANES))+1)
 209 #define VB_SIZE  (VB_MAX + VB_MAX_CLIPPED_VERTS)
 210
 211
 212 typedef struct __GLcontextRec GLcontext;
 213
 214 extern void
 215 gl_read_config_file(GLcontext *ctx);
 216
 217 extern void
 218 gl_register_config_var(const char *name, void (*notify)( const char *, int ));
 219
 220
 221 #endif