src/mesa/main/config.h

   1 /* $Id: config.h,v 1.1 1999/08/19 00:55:41 jtg Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.1
   6  *
   7  * Copyright (C) 1999  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
  30
  31
  32 /*
  33  * Tunable configuration parameters.
  34  */
  35
  36
  37
  38 #ifndef CONFIG_H
  39 #define CONFIG_H
  40
  41 #ifdef HAVE_CONFIG_H
  42 #include "conf.h"
  43 #endif
  44
  45 /*
  46  *
  47  * OpenGL implementation limits
  48  *
  49  */
  50
  51
  52 /* Maximum modelview matrix stack depth: */
  53 #define MAX_MODELVIEW_STACK_DEPTH 32
  54
  55 /* Maximum projection matrix stack depth: */
  56 #define MAX_PROJECTION_STACK_DEPTH 32
  57
  58 /* Maximum texture matrix stack depth: */
  59 #define MAX_TEXTURE_STACK_DEPTH 10
  60
  61 /* Maximum attribute stack depth: */
  62 #define MAX_ATTRIB_STACK_DEPTH 16
  63
  64 /* Maximum client attribute stack depth: */
  65 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  66
  67 /* Maximum recursion depth of display list calls: */
  68 #define MAX_LIST_NESTING 64
  69
  70 /* Maximum number of lights: */
  71 #define MAX_LIGHTS 8
  72
  73 /* Maximum user-defined clipping planes: */
  74 #define MAX_CLIP_PLANES 6
  75
  76 /* Maximum pixel map lookup table size: */
  77 #define MAX_PIXEL_MAP_TABLE 256
  78
  79 /* Number of auxillary color buffers: */
  80 #define NUM_AUX_BUFFERS 0
  81
  82 /* Maximum order (degree) of curves: */
  83 #ifdef AMIGA
  84 #   define MAX_EVAL_ORDER 12
  85 #else
  86 #   define MAX_EVAL_ORDER 30
  87 #endif
  88
  89 /* Maximum Name stack depth */
  90 #define MAX_NAME_STACK_DEPTH 64
  91
  92 /* Min and Max point sizes and granularity */
  93 #define MIN_POINT_SIZE 1.0
  94 #define MAX_POINT_SIZE 10.0
  95 #define POINT_SIZE_GRANULARITY 0.1
  96
  97 /* Min and Max line widths and granularity */
  98 #define MIN_LINE_WIDTH 1.0
  99 #define MAX_LINE_WIDTH 10.0
 100 #define LINE_WIDTH_GRANULARITY 1.0
 101
 102 /* Max texture palette size */
 103 #define MAX_TEXTURE_PALETTE_SIZE 256
 104
 105 /* Number of texture levels */
 106 #define MAX_TEXTURE_LEVELS 12
 107
 108 /* Number of texture units - GL_ARB_multitexture */
 109 #define MAX_TEXTURE_UNITS 2
 110
 111 /* Maximum viewport size: */
 112 #define MAX_WIDTH 1600
 113 #define MAX_HEIGHT 1200
 114
 115 /* Maxmimum size for CVA.  May be overridden by the drivers.  */
 116 #define MAX_ARRAY_LOCK_SIZE 3000
 117
 118
 119 /*
 120  *
 121  * Mesa-specific parameters
 122  *
 123  */
 124
 125
 126 /*
 127  * Bits per accumulation buffer color component:  8 or 16
 128  */
 129 #define ACCUM_BITS 16
 130
 131
 132 #ifdef MESAD3D
 133    /* Mesa / Direct3D driver only */
 134    extern float g_DepthScale, g_MaxDepth;
 135 #  define DEPTH_BITS    32
 136 #  define DEPTH_SCALE   g_DepthScale
 137 #  define MAX_DEPTH     g_MaxDepth
 138 #else
 139    /*
 140     * Bits per depth buffer value:  16 or 32
 141     */
 142 #  define DEPTH_BITS 16
 143 #  if DEPTH_BITS==16
 144 #     define MAX_DEPTH 0xffff
 145 #     define DEPTH_SCALE 65535.0F
 146 #  elif DEPTH_BITS==32
 147 #     define MAX_DEPTH 0x3fffffff
 148 #     define DEPTH_SCALE ((GLfloat) MAX_DEPTH)
 149 #  else
 150 #     error "illegal number of depth bits"
 151 #  endif
 152 #endif
 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
 166
 167
 168 /*
 169  * Color channel component order
 170  * (changes will almost certainly cause problems at this time)
 171  */
 172 #define RCOMP 0
 173 #define GCOMP 1
 174 #define BCOMP 2
 175 #define ACOMP 3
 176
 177
 178
 179 /* Vertex buffer size.  KW: no restrictions on the divisibility of
 180  * this number, though things may go better for you if you choose a
 181  * value of 12n + 3.
 182  */
 183
 184 #define VB_START  3
 185
 186 #if defined(FX) && !defined(MITS)
 187 #  define VB_MAX 72 + VB_START  /* better performance */
 188 #else
 189 #  define VB_MAX 480 + VB_START
 190 #endif
 191
 192 /*
 193  * Actual vertex buffer size.
 194  *
 195  * Arrays must also accomodate new vertices from clipping, and
 196  * potential overflow from primitives which don't fit into neatly into
 197  * VB_MAX vertices.  (This only happens when mixed primitives are
 198  * sharing the vb).
 199  */
 200 #define VB_MAX_CLIPPED_VERTS (2 * (6 + MAX_CLIP_PLANES))
 201 #define VB_SIZE  (VB_MAX + VB_MAX_CLIPPED_VERTS)
 202
 203
 204 /*
 205  *
 206  * For X11 driver only:
 207  *
 208  */
 209
 210 /*
 211  * When defined, use 6x6x6 dithering instead of 5x9x5.
 212  * 5x9x5 better for general colors, 6x6x6 better for grayscale.
 213  */
 214 /*#define DITHER666*/
 215
 216
 217
 218 typedef struct gl_context GLcontext;
 219
 220 extern void gl_read_config_file( struct gl_context *ctx );
 221
 222 #endif