src/mesa/main/config.h

   1 /**
   2  * \file config.h
   3  * Tunable configuration parameters.
   4  */
   5
   6 /*
   7  * Mesa 3-D graphics library
   8  * Version:  6.3
   9  *
  10  * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a
  13  * copy of this software and associated documentation files (the "Software"),
  14  * to deal in the Software without restriction, including without limitation
  15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  16  * and/or sell copies of the Software, and to permit persons to whom the
  17  * Software is furnished to do so, subject to the following conditions:
  18  *
  19  * The above copyright notice and this permission notice shall be included
  20  * in all copies or substantial portions of the Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  23  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  25  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  26  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  27  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28  */
  29
  30
  31 #ifndef CONFIG_H
  32 #define CONFIG_H
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include "conf.h"
  36 #endif
  37
  38
  39 /**
  40  * \name OpenGL implementation limits
  41  */
  42 /*@{*/
  43
  44 /** Maximum modelview matrix stack depth */
  45 #define MAX_MODELVIEW_STACK_DEPTH 32
  46
  47 /** Maximum projection matrix stack depth */
  48 #define MAX_PROJECTION_STACK_DEPTH 32
  49
  50 /** Maximum texture matrix stack depth */
  51 #define MAX_TEXTURE_STACK_DEPTH 10
  52
  53 /** Maximum color matrix stack depth */
  54 #define MAX_COLOR_STACK_DEPTH 4
  55
  56 /** Maximum attribute stack depth */
  57 #define MAX_ATTRIB_STACK_DEPTH 16
  58
  59 /** Maximum client attribute stack depth */
  60 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  61
  62 /** Maximum recursion depth of display list calls */
  63 #define MAX_LIST_NESTING 64
  64
  65 /** Maximum number of lights */
  66 #define MAX_LIGHTS 8
  67
  68 /** Maximum user-defined clipping planes */
  69 #define MAX_CLIP_PLANES 6
  70
  71 /** Maximum pixel map lookup table size */
  72 #define MAX_PIXEL_MAP_TABLE 256
  73
  74 /** Maximum number of auxillary color buffers */
  75 #define MAX_AUX_BUFFERS 4
  76
  77 /** Maximum order (degree) of curves */
  78 #ifdef AMIGA
  79 #   define MAX_EVAL_ORDER 12
  80 #else
  81 #   define MAX_EVAL_ORDER 30
  82 #endif
  83
  84 /** Maximum Name stack depth */
  85 #define MAX_NAME_STACK_DEPTH 64
  86
  87 /** Minimum point size */
  88 #define MIN_POINT_SIZE 1.0
  89 /** Maximum point size */
  90 #define MAX_POINT_SIZE 20.0
  91 /** Point size granularity */
  92 #define POINT_SIZE_GRANULARITY 0.1
  93
  94 /** Minimum line width */
  95 #define MIN_LINE_WIDTH 1.0
  96 /** Maximum line width */
  97 #define MAX_LINE_WIDTH 10.0
  98 /** Line width granularity */
  99 #define LINE_WIDTH_GRANULARITY 0.1
 100
 101 /** Max texture palette / color table size */
 102 #define MAX_COLOR_TABLE_SIZE 256
 103
 104 /** Number of 1D/2D texture mipmap levels */
 105 #define MAX_TEXTURE_LEVELS 12
 106
 107 /** Number of 3D texture mipmap levels */
 108 #define MAX_3D_TEXTURE_LEVELS 9
 109
 110 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
 111 #define MAX_CUBE_TEXTURE_LEVELS 12
 112
 113 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
 114 #define MAX_TEXTURE_RECT_SIZE 2048
 115
 116 /** Number of texture units - GL_ARB_multitexture */
 117 #define MAX_TEXTURE_UNITS 8
 118
 119 /*@}*/
 120
 121
 122 /**
 123  * \name Separate numbers of texture coordinates and texture image units.
 124  *
 125  * These values will eventually replace most instances of MAX_TEXTURE_UNITS.
 126  * We should always have MAX_TEXTURE_COORD_UNITS <= MAX_TEXTURE_IMAGE_UNITS.
 127  * And, GL_MAX_TEXTURE_UNITS <= MAX_TEXTURE_COORD_UNITS.
 128  */
 129 /*@{*/
 130 #define MAX_TEXTURE_COORD_UNITS 8
 131 #define MAX_TEXTURE_IMAGE_UNITS 8
 132 /*@}*/
 133
 134 /**
 135  * Maximum viewport/image width. Must accomodate all texture sizes too.
 136  */
 137 #define MAX_WIDTH 4096
 138 /** Maximum viewport/image height */
 139 #define MAX_HEIGHT 4096
 140
 141 /** Maxmimum size for CVA.  May be overridden by the drivers.  */
 142 #define MAX_ARRAY_LOCK_SIZE 3000
 143
 144 /** Subpixel precision for antialiasing, window coordinate snapping */
 145 #define SUB_PIXEL_BITS 4
 146
 147 /** Size of histogram tables */
 148 #define HISTOGRAM_TABLE_SIZE 256
 149
 150 /** Max convolution filter width */
 151 #define MAX_CONVOLUTION_WIDTH 9
 152 /** Max convolution filter height */
 153 #define MAX_CONVOLUTION_HEIGHT 9
 154
 155 /** For GL_ARB_texture_compression */
 156 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
 157
 158 /** For GL_EXT_texture_filter_anisotropic */
 159 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
 160
 161 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
 162 #define MAX_TEXTURE_LOD_BIAS 11.0
 163
 164 /** For GL_NV_vertex_program */
 165 /*@{*/
 166 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
 167 #define MAX_NV_VERTEX_PROGRAM_TEMPS         12
 168 #define MAX_NV_VERTEX_PROGRAM_PARAMS        128 /* KW: power of two */
 169 #define MAX_NV_VERTEX_PROGRAM_INPUTS        16
 170 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
 171 /*@}*/
 172
 173 /** For GL_NV_fragment_program */
 174 /*@{*/
 175 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 128
 176 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
 177 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
 178 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
 179 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
 180 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
 181 /*@}*/
 182
 183 /** For GL_ARB_vertex_program */
 184 /*@{*/
 185 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
 186 #define MAX_VERTEX_PROGRAM_ATTRIBS     16
 187 /*@}*/
 188
 189 /** For GL_ARB_fragment_program */
 190 /*@{*/
 191 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 1
 192 #define MAX_FRAGMENT_PROGRAM_ALU_INSTRUCTIONS 48
 193 #define MAX_FRAGMENT_PROGRAM_TEX_INSTRUCTIONS 24
 194 #define MAX_FRAGMENT_PROGRAM_TEX_INDIRECTIONS  4
 195 /*@}*/
 196
 197 /** For any program target/extension */
 198 /*@{*/
 199 #define MAX_PROGRAM_LOCAL_PARAMS 128 /* KW: power of two */
 200 #define MAX_PROGRAM_MATRICES 8
 201 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
 202 /*@}*/
 203
 204 /** For GL_ARB_fragment_shader */
 205 /*@{*/
 206 #define MAX_FRAGMENT_UNIFORM_COMPONENTS 64
 207 /*@}*/
 208
 209 /** For GL_ARB_vertex_shader */
 210 /*@{*/
 211 #define MAX_VERTEX_UNIFORM_COMPONENTS 512
 212 #define MAX_VARYING_FLOATS 32
 213 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS 0
 214 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS)
 215 /*@}*/
 216
 217
 218 /** For GL_ARB_draw_buffers */
 219 /*@{*/
 220 #define MAX_DRAW_BUFFERS 1
 221 /*@}*/
 222
 223
 224 /** For GL_EXT_framebuffer_object */
 225 /*@{*/
 226 #define MAX_COLOR_ATTACHMENTS 8
 227 /*@}*/
 228
 229
 230
 231 /**
 232  * \name Mesa-specific parameters
 233  */
 234 /*@{*/
 235
 236
 237 /**
 238  * If non-zero use GLdouble for walking triangle edges, for better accuracy.
 239  */
 240 #define TRIANGLE_WALK_DOUBLE 0
 241
 242 /**
 243  * Bits per accumulation buffer color component:  8, 16 or 32
 244  */
 245 #define ACCUM_BITS 16
 246
 247 /**
 248  * Bits per depth buffer value.
 249  *
 250  * Any reasonable value up to 31 will work.  32 doesn't work because of integer
 251  * overflow problems in the rasterizer code.
 252  */
 253 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS
 254 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
 255 #endif
 256 /** Depth buffer data type */
 257 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
 258 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
 259 #else
 260 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
 261 #endif
 262
 263
 264 /**
 265  * Bits per stencil value: 8
 266  */
 267 #define STENCIL_BITS 8
 268
 269
 270 /**
 271  * Bits per color channel:  8, 16 or 32
 272  */
 273 #ifndef CHAN_BITS
 274 #define CHAN_BITS 8
 275 #endif
 276
 277
 278 /*
 279  * Color channel component order
 280  *
 281  * \note Changes will almost certainly cause problems at this time.
 282  */
 283 #define RCOMP 0
 284 #define GCOMP 1
 285 #define BCOMP 2
 286 #define ACOMP 3
 287
 288
 289 /*
 290  * Enable/disable features (blocks of code) by setting FEATURE_xyz to 0 or 1.
 291  */
 292 #ifndef _HAVE_FULL_GL
 293 #define _HAVE_FULL_GL 1
 294 #endif
 295
 296 #define FEATURE_ARB_vertex_buffer_object  _HAVE_FULL_GL
 297 #define FEATURE_ARB_vertex_program  _HAVE_FULL_GL
 298 #define FEATURE_ARB_fragment_program  _HAVE_FULL_GL
 299 #define FEATURE_ARB_occlusion_query  _HAVE_FULL_GL
 300 #define FEATURE_EXT_pixel_buffer_object  _HAVE_FULL_GL
 301 #define FEATURE_MESA_program_debug  _HAVE_FULL_GL
 302 #define FEATURE_NV_fence  _HAVE_FULL_GL
 303 #define FEATURE_NV_fragment_program  _HAVE_FULL_GL
 304 #define FEATURE_NV_vertex_program  _HAVE_FULL_GL
 305 #define FEATURE_userclip  _HAVE_FULL_GL
 306 #define FEATURE_texgen  _HAVE_FULL_GL
 307 #define FEATURE_windowpos  _HAVE_FULL_GL
 308 #define FEATURE_ARB_vertex_shader _HAVE_FULL_GL
 309 #define FEATURE_ARB_fragment_shader _HAVE_FULL_GL
 310 #define FEATURE_ARB_shader_objects (FEATURE_ARB_vertex_shader || FEATURE_ARB_fragment_shader)
 311 #define FEATURE_ARB_shading_language_100 FEATURE_ARB_shader_objects
 312 #define FEATURE_ATI_fragment_shader _HAVE_FULL_GL
 313 #define FEATURE_EXT_framebuffer_object _HAVE_FULL_GL
 314 /*@}*/
 315
 316
 317 /**
 318  * Maximum number of temporary vertices required for clipping.
 319  *
 320  * Used in array_cache and tnl modules.
 321  */
 322 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 323
 324
 325 /* XXX these are temporary */
 326 #define NEW_RENDERBUFFER 1
 327 #define OLD_RENDERBUFFER 1
 328
 329
 330 #endif /* CONFIG_H */