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:  7.1
   9  *
  10  * Copyright (C) 1999-2007  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 MESA_CONFIG_H_INCLUDED
  32 #define MESA_CONFIG_H_INCLUDED
  33
  34
  35 #include "main/mfeatures.h"
  36
  37
  38 /**
  39  * \name OpenGL implementation limits
  40  */
  41 /*@{*/
  42
  43 /** Maximum modelview matrix stack depth */
  44 #define MAX_MODELVIEW_STACK_DEPTH 32
  45
  46 /** Maximum projection matrix stack depth */
  47 #define MAX_PROJECTION_STACK_DEPTH 32
  48
  49 /** Maximum texture matrix stack depth */
  50 #define MAX_TEXTURE_STACK_DEPTH 10
  51
  52 /** Maximum color matrix stack depth */
  53 #define MAX_COLOR_STACK_DEPTH 4
  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 /** Maximum number of auxillary color buffers */
  74 #define MAX_AUX_BUFFERS 4
  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 /** Minimum point size */
  87 #define MIN_POINT_SIZE 1.0
  88 /** Maximum point size */
  89 #define MAX_POINT_SIZE 60.0
  90 /** Point size granularity */
  91 #define POINT_SIZE_GRANULARITY 0.1
  92
  93 /** Minimum line width */
  94 #define MIN_LINE_WIDTH 1.0
  95 /** Maximum line width */
  96 #define MAX_LINE_WIDTH 10.0
  97 /** Line width granularity */
  98 #define LINE_WIDTH_GRANULARITY 0.1
  99
 100 /** Max texture palette / color table size */
 101 #define MAX_COLOR_TABLE_SIZE 256
 102
 103 /** Number of 1D/2D texture mipmap levels */
 104 #define MAX_TEXTURE_LEVELS 12
 105
 106 /** Number of 3D texture mipmap levels */
 107 #define MAX_3D_TEXTURE_LEVELS 9
 108
 109 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
 110 #define MAX_CUBE_TEXTURE_LEVELS 12
 111
 112 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
 113 #define MAX_TEXTURE_RECT_SIZE 2048
 114
 115 /** Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array */
 116 #define MAX_ARRAY_TEXTURE_LAYERS 64
 117
 118 /** Number of texture units - GL_ARB_multitexture
 119  * This needs to be the larger of MAX_TEXTURE_COORD_UNITS and
 120  * MAX_TEXTURE_IMAGE_UNITS seen below, since MAX_TEXTURE_UNITS is used
 121  * to dimension some arrays that store both coord and image data.
 122 */
 123 #define MAX_TEXTURE_UNITS 8
 124
 125 /*@}*/
 126
 127
 128 /**
 129  * \name Separate numbers of texture coordinates and texture image units.
 130  *
 131  * These values will eventually replace most instances of MAX_TEXTURE_UNITS.
 132  * We should always have MAX_TEXTURE_COORD_UNITS <= MAX_TEXTURE_IMAGE_UNITS.
 133  * And, GL_MAX_TEXTURE_UNITS <= MAX_TEXTURE_COORD_UNITS.
 134  */
 135 /*@{*/
 136 #define MAX_TEXTURE_COORD_UNITS 8
 137 #define MAX_TEXTURE_IMAGE_UNITS 8
 138 /*@}*/
 139
 140 /**
 141  * Maximum viewport/image width. Must accomodate all texture sizes too.
 142  */
 143 #define MAX_WIDTH 4096
 144 /** Maximum viewport/image height */
 145 #define MAX_HEIGHT 4096
 146
 147 /** Maxmimum size for CVA.  May be overridden by the drivers.  */
 148 #define MAX_ARRAY_LOCK_SIZE 3000
 149
 150 /** Subpixel precision for antialiasing, window coordinate snapping */
 151 #define SUB_PIXEL_BITS 4
 152
 153 /** Size of histogram tables */
 154 #define HISTOGRAM_TABLE_SIZE 256
 155
 156 /** Max convolution filter width */
 157 #define MAX_CONVOLUTION_WIDTH 9
 158 /** Max convolution filter height */
 159 #define MAX_CONVOLUTION_HEIGHT 9
 160
 161 /** For GL_ARB_texture_compression */
 162 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
 163
 164 /** For GL_EXT_texture_filter_anisotropic */
 165 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
 166
 167 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
 168 #define MAX_TEXTURE_LOD_BIAS 11.0
 169
 170 /** For GL_ARB_vertex_program */
 171 /*@{*/
 172 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
 173 #define MAX_VERTEX_PROGRAM_ATTRIBS     16
 174 /*@}*/
 175
 176 /** For GL_ARB_fragment_program */
 177 /*@{*/
 178 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
 179 #define MAX_FRAGMENT_PROGRAM_ALU_INSTRUCTIONS 48
 180 #define MAX_FRAGMENT_PROGRAM_TEX_INSTRUCTIONS 24
 181 #define MAX_FRAGMENT_PROGRAM_TEX_INDIRECTIONS  4
 182 /*@}*/
 183
 184 /** For any program target/extension */
 185 /*@{*/
 186 #define MAX_PROGRAM_LOCAL_PARAMS 256 /**< per-program constants (power of two) */
 187 #define MAX_PROGRAM_ENV_PARAMS 128
 188 #define MAX_PROGRAM_MATRICES 8
 189 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
 190 #define MAX_PROGRAM_CALL_DEPTH 8
 191 #define MAX_PROGRAM_TEMPS 128
 192 #define MAX_PROGRAM_ADDRESS_REGS 2
 193 #define MAX_UNIFORMS 256   /**< number of vec4 uniforms */
 194 #define MAX_VARYING 8      /**< number of float[4] vectors */
 195 #define MAX_SAMPLERS 8
 196 #define MAX_PROGRAM_INPUTS 32
 197 #define MAX_PROGRAM_OUTPUTS 32
 198 /*@}*/
 199
 200 /** For GL_NV_vertex_program */
 201 /*@{*/
 202 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
 203 #define MAX_NV_VERTEX_PROGRAM_TEMPS         12
 204 #define MAX_NV_VERTEX_PROGRAM_PARAMS        MAX_PROGRAM_ENV_PARAMS
 205 #define MAX_NV_VERTEX_PROGRAM_INPUTS        16
 206 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
 207 /*@}*/
 208
 209 /** For GL_NV_fragment_program */
 210 /*@{*/
 211 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
 212 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
 213 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
 214 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
 215 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
 216 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
 217 /*@}*/
 218
 219
 220 /** For GL_ARB_vertex_shader */
 221 /*@{*/
 222 #define MAX_VERTEX_ATTRIBS 16
 223 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_UNITS
 224 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS)
 225 /*@}*/
 226
 227
 228 /** For GL_ARB_draw_buffers */
 229 /*@{*/
 230 #define MAX_DRAW_BUFFERS 4
 231 /*@}*/
 232
 233
 234 /** For GL_EXT_framebuffer_object */
 235 /*@{*/
 236 #define MAX_COLOR_ATTACHMENTS 8
 237 /*@}*/
 238
 239
 240
 241 /**
 242  * \name Mesa-specific parameters
 243  */
 244 /*@{*/
 245
 246
 247 /**
 248  * If non-zero use GLdouble for walking triangle edges, for better accuracy.
 249  */
 250 #define TRIANGLE_WALK_DOUBLE 0
 251
 252
 253 /**
 254  * Bits per depth buffer value (max is 32).
 255  */
 256 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS
 257 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
 258 #endif
 259 /** Depth buffer data type */
 260 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
 261 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
 262 #else
 263 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
 264 #endif
 265
 266
 267 /**
 268  * Bits per stencil value: 8
 269  */
 270 #define STENCIL_BITS 8
 271
 272
 273 /**
 274  * Bits per color channel:  8, 16 or 32
 275  */
 276 #ifndef CHAN_BITS
 277 #define CHAN_BITS 8
 278 #endif
 279
 280
 281 /*
 282  * Color channel component order
 283  *
 284  * \note Changes will almost certainly cause problems at this time.
 285  */
 286 #define RCOMP 0
 287 #define GCOMP 1
 288 #define BCOMP 2
 289 #define ACOMP 3
 290
 291
 292 /**
 293  * Maximum number of temporary vertices required for clipping.
 294  *
 295  * Used in array_cache and tnl modules.
 296  */
 297 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 298
 299
 300 #endif /* MESA_CONFIG_H_INCLUDED */