src/mesa/main/config.h

   1 /* $Id: config.h,v 1.2 1999/11/11 01:22:25 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.3
   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  * 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 attribute stack depth: */
  56 #define MAX_ATTRIB_STACK_DEPTH 16
  57
  58 /* Maximum client attribute stack depth: */
  59 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  60
  61 /* Maximum recursion depth of display list calls: */
  62 #define MAX_LIST_NESTING 64
  63
  64 /* Maximum number of lights: */
  65 #define MAX_LIGHTS 8
  66
  67 /* Maximum user-defined clipping planes: */
  68 #define MAX_CLIP_PLANES 6
  69
  70 /* Maximum pixel map lookup table size: */
  71 #define MAX_PIXEL_MAP_TABLE 256
  72
  73 /* Number of auxillary color buffers: */
  74 #define NUM_AUX_BUFFERS 0
  75
  76 /* Maximum order (degree) of curves: */
  77 #ifdef AMIGA
  78 #   define MAX_EVAL_ORDER 12
  79 #else
  80 #   define MAX_EVAL_ORDER 30
  81 #endif
  82
  83 /* Maximum Name stack depth */
  84 #define MAX_NAME_STACK_DEPTH 64
  85
  86 /* Min and Max point sizes and granularity */
  87 #define MIN_POINT_SIZE 1.0
  88 #define MAX_POINT_SIZE 10.0
  89 #define POINT_SIZE_GRANULARITY 0.1
  90
  91 /* Min and Max line widths and granularity */
  92 #define MIN_LINE_WIDTH 1.0
  93 #define MAX_LINE_WIDTH 10.0
  94 #define LINE_WIDTH_GRANULARITY 1.0
  95
  96 /* Max texture palette size */
  97 #define MAX_TEXTURE_PALETTE_SIZE 256
  98
  99 /* Number of texture levels */
 100 #define MAX_TEXTURE_LEVELS 12
 101
 102 /* Number of texture units - GL_ARB_multitexture */
 103 #define MAX_TEXTURE_UNITS 2
 104
 105 /* Maximum viewport size: */
 106 #define MAX_WIDTH 1600
 107 #define MAX_HEIGHT 1200
 108
 109 /* Maxmimum size for CVA.  May be overridden by the drivers.  */
 110 #define MAX_ARRAY_LOCK_SIZE 3000
 111
 112
 113
 114 /*
 115  * Mesa-specific parameters
 116  */
 117
 118
 119 /*
 120  * Bits per accumulation buffer color component:  8 or 16
 121  */
 122 #define ACCUM_BITS 16
 123
 124
 125 /*
 126  * Bits per depth buffer value:  16 or 32
 127  */
 128 #ifdef MESAD3D
 129    /* Mesa / Direct3D driver only */
 130    extern float g_DepthScale, g_MaxDepth;
 131 #  define DEPTH_BITS    32
 132 #  define DEPTH_SCALE   g_DepthScale
 133 #  define MAX_DEPTH     g_MaxDepth
 134 #else
 135 #  define DEPTH_BITS 16
 136 #  if DEPTH_BITS==16
 137 #     define MAX_DEPTH 0xffff
 138 #     define DEPTH_SCALE 65535.0F
 139 #  elif DEPTH_BITS==32
 140 #     define MAX_DEPTH 0x3fffffff
 141 #     define DEPTH_SCALE ((GLfloat) MAX_DEPTH)
 142 #  else
 143 #     error "illegal number of depth bits"
 144 #  endif
 145 #endif
 146
 147
 148 /*
 149  * Bits per stencil value:  8
 150  */
 151 #define STENCIL_BITS 8
 152
 153
 154 /*
 155  * Bits per color channel (must be 8 at this time!)
 156  */
 157 #define CHAN_BITS 8
 158
 159
 160
 161 /*
 162  * Color channel component order
 163  * (changes will almost certainly cause problems at this time)
 164  */
 165 #define RCOMP 0
 166 #define GCOMP 1
 167 #define BCOMP 2
 168 #define ACOMP 3
 169
 170
 171
 172 /* Vertex buffer size.  KW: no restrictions on the divisibility of
 173  * this number, though things may go better for you if you choose a
 174  * value of 12n + 3.
 175  */
 176
 177 #define VB_START  3
 178
 179 #if defined(FX) && !defined(MITS)
 180 #  define VB_MAX 72 + VB_START  /* better performance */
 181 #else
 182 #  define VB_MAX 480 + VB_START
 183 #endif
 184
 185 /*
 186  * Actual vertex buffer size.
 187  *
 188  * Arrays must also accomodate new vertices from clipping, and
 189  * potential overflow from primitives which don't fit into neatly into
 190  * VB_MAX vertices.  (This only happens when mixed primitives are
 191  * sharing the vb).
 192  */
 193 #define VB_MAX_CLIPPED_VERTS (2 * (6 + MAX_CLIP_PLANES))
 194 #define VB_SIZE  (VB_MAX + VB_MAX_CLIPPED_VERTS)
 195
 196
 197
 198 typedef struct gl_context GLcontext;
 199
 200 extern void gl_read_config_file( struct gl_context *ctx );
 201
 202 #endif