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  * \name OpenGL implementation limits
  36  */
  37 /*@{*/
  38
  39 /** Maximum modelview matrix stack depth */
  40 #define MAX_MODELVIEW_STACK_DEPTH 32
  41
  42 /** Maximum projection matrix stack depth */
  43 #define MAX_PROJECTION_STACK_DEPTH 32
  44
  45 /** Maximum texture matrix stack depth */
  46 #define MAX_TEXTURE_STACK_DEPTH 10
  47
  48 /** Maximum color matrix stack depth */
  49 #define MAX_COLOR_STACK_DEPTH 4
  50
  51 /** Maximum attribute stack depth */
  52 #define MAX_ATTRIB_STACK_DEPTH 16
  53
  54 /** Maximum client attribute stack depth */
  55 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  56
  57 /** Maximum recursion depth of display list calls */
  58 #define MAX_LIST_NESTING 64
  59
  60 /** Maximum number of lights */
  61 #define MAX_LIGHTS 8
  62
  63 /** Maximum user-defined clipping planes */
  64 #define MAX_CLIP_PLANES 6
  65
  66 /** Maximum pixel map lookup table size */
  67 #define MAX_PIXEL_MAP_TABLE 256
  68
  69 /** Maximum number of auxillary color buffers */
  70 #define MAX_AUX_BUFFERS 4
  71
  72 /** Maximum order (degree) of curves */
  73 #ifdef AMIGA
  74 #   define MAX_EVAL_ORDER 12
  75 #else
  76 #   define MAX_EVAL_ORDER 30
  77 #endif
  78
  79 /** Maximum Name stack depth */
  80 #define MAX_NAME_STACK_DEPTH 64
  81
  82 /** Minimum point size */
  83 #define MIN_POINT_SIZE 1.0
  84 /** Maximum point size */
  85 #define MAX_POINT_SIZE 60.0
  86 /** Point size granularity */
  87 #define POINT_SIZE_GRANULARITY 0.1
  88
  89 /** Minimum line width */
  90 #define MIN_LINE_WIDTH 1.0
  91 /** Maximum line width */
  92 #define MAX_LINE_WIDTH 10.0
  93 /** Line width granularity */
  94 #define LINE_WIDTH_GRANULARITY 0.1
  95
  96 /** Max texture palette / color table size */
  97 #define MAX_COLOR_TABLE_SIZE 256
  98
  99 /** Number of 1D/2D texture mipmap levels */
 100 #define MAX_TEXTURE_LEVELS 12
 101
 102 /** Number of 3D texture mipmap levels */
 103 #define MAX_3D_TEXTURE_LEVELS 9
 104
 105 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
 106 #define MAX_CUBE_TEXTURE_LEVELS 12
 107
 108 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
 109 #define MAX_TEXTURE_RECT_SIZE 2048
 110
 111 /** Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array */
 112 #define MAX_ARRAY_TEXTURE_LAYERS 64
 113
 114 /** Number of texture units - GL_ARB_multitexture
 115  * This needs to be the larger of MAX_TEXTURE_COORD_UNITS and
 116  * MAX_TEXTURE_IMAGE_UNITS seen below, since MAX_TEXTURE_UNITS is used
 117  * to dimension some arrays that store both coord and image data.
 118 */
 119 #define MAX_TEXTURE_UNITS 8
 120
 121 /*@}*/
 122
 123
 124 /**
 125  * \name Separate numbers of texture coordinates and texture image units.
 126  *
 127  * These values will eventually replace most instances of MAX_TEXTURE_UNITS.
 128  * We should always have MAX_TEXTURE_COORD_UNITS <= MAX_TEXTURE_IMAGE_UNITS.
 129  * And, GL_MAX_TEXTURE_UNITS <= MAX_TEXTURE_COORD_UNITS.
 130  */
 131 /*@{*/
 132 #define MAX_TEXTURE_COORD_UNITS 8
 133 #define MAX_TEXTURE_IMAGE_UNITS 8
 134 /*@}*/
 135
 136 /**
 137  * Maximum viewport/image width. Must accomodate all texture sizes too.
 138  */
 139 #define MAX_WIDTH 4096
 140 /** Maximum viewport/image height */
 141 #define MAX_HEIGHT 4096
 142
 143 /** Maxmimum size for CVA.  May be overridden by the drivers.  */
 144 #define MAX_ARRAY_LOCK_SIZE 3000
 145
 146 /** Subpixel precision for antialiasing, window coordinate snapping */
 147 #define SUB_PIXEL_BITS 4
 148
 149 /** Size of histogram tables */
 150 #define HISTOGRAM_TABLE_SIZE 256
 151
 152 /** Max convolution filter width */
 153 #define MAX_CONVOLUTION_WIDTH 9
 154 /** Max convolution filter height */
 155 #define MAX_CONVOLUTION_HEIGHT 9
 156
 157 /** For GL_ARB_texture_compression */
 158 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
 159
 160 /** For GL_EXT_texture_filter_anisotropic */
 161 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
 162
 163 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
 164 #define MAX_TEXTURE_LOD_BIAS 11.0
 165
 166 /** For GL_ARB_vertex_program */
 167 /*@{*/
 168 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
 169 #define MAX_VERTEX_PROGRAM_ATTRIBS     16
 170 /*@}*/
 171
 172 /** For GL_ARB_fragment_program */
 173 /*@{*/
 174 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
 175 #define MAX_FRAGMENT_PROGRAM_ALU_INSTRUCTIONS 48
 176 #define MAX_FRAGMENT_PROGRAM_TEX_INSTRUCTIONS 24
 177 #define MAX_FRAGMENT_PROGRAM_TEX_INDIRECTIONS  4
 178 /*@}*/
 179
 180 /** For any program target/extension */
 181 /*@{*/
 182 #define MAX_PROGRAM_LOCAL_PARAMS 128 /* KW: power of two */
 183 #define MAX_PROGRAM_ENV_PARAMS 128
 184 #define MAX_PROGRAM_MATRICES 8
 185 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
 186 #define MAX_PROGRAM_CALL_DEPTH 8
 187 #define MAX_PROGRAM_TEMPS 128
 188 #define MAX_PROGRAM_ADDRESS_REGS 2
 189 #define MAX_UNIFORMS 128
 190 #define MAX_VARYING 8
 191 #define MAX_SAMPLERS 8
 192 /*@}*/
 193
 194 /** For GL_NV_vertex_program */
 195 /*@{*/
 196 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
 197 #define MAX_NV_VERTEX_PROGRAM_TEMPS         12
 198 #define MAX_NV_VERTEX_PROGRAM_PARAMS        MAX_PROGRAM_ENV_PARAMS
 199 #define MAX_NV_VERTEX_PROGRAM_INPUTS        16
 200 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
 201 /*@}*/
 202
 203 /** For GL_NV_fragment_program */
 204 /*@{*/
 205 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
 206 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
 207 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
 208 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
 209 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
 210 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
 211 /*@}*/
 212
 213
 214 /** For GL_ARB_vertex_shader */
 215 /*@{*/
 216 #define MAX_VERTEX_ATTRIBS 16
 217 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_UNITS
 218 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS)
 219 /*@}*/
 220
 221
 222 /** For GL_ARB_draw_buffers */
 223 /*@{*/
 224 #define MAX_DRAW_BUFFERS 4
 225 /*@}*/
 226
 227
 228 /** For GL_EXT_framebuffer_object */
 229 /*@{*/
 230 #define MAX_COLOR_ATTACHMENTS 8
 231 /*@}*/
 232
 233
 234
 235 /**
 236  * \name Mesa-specific parameters
 237  */
 238 /*@{*/
 239
 240
 241 /**
 242  * If non-zero use GLdouble for walking triangle edges, for better accuracy.
 243  */
 244 #define TRIANGLE_WALK_DOUBLE 0
 245
 246
 247 /**
 248  * Bits per depth buffer value (max is 32).
 249  */
 250 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS
 251 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
 252 #endif
 253 /** Depth buffer data type */
 254 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
 255 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
 256 #else
 257 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
 258 #endif
 259
 260
 261 /**
 262  * Bits per stencil value: 8
 263  */
 264 #define STENCIL_BITS 8
 265
 266
 267 /**
 268  * Bits per color channel:  8, 16 or 32
 269  */
 270 #ifndef CHAN_BITS
 271 #define CHAN_BITS 8
 272 #endif
 273
 274
 275 /*
 276  * Color channel component order
 277  *
 278  * \note Changes will almost certainly cause problems at this time.
 279  */
 280 #define RCOMP 0
 281 #define GCOMP 1
 282 #define BCOMP 2
 283 #define ACOMP 3
 284
 285
 286 /*
 287  * Enable/disable features (blocks of code) by setting FEATURE_xyz to 0 or 1.
 288  */
 289 #ifndef _HAVE_FULL_GL
 290 #define _HAVE_FULL_GL 1
 291 #endif
 292
 293 #define FEATURE_userclip  _HAVE_FULL_GL
 294 #define FEATURE_texgen  _HAVE_FULL_GL
 295 #define FEATURE_windowpos  _HAVE_FULL_GL
 296 #define FEATURE_ARB_occlusion_query  _HAVE_FULL_GL
 297 #define FEATURE_ARB_fragment_program  _HAVE_FULL_GL
 298 #define FEATURE_ARB_vertex_buffer_object  _HAVE_FULL_GL
 299 #define FEATURE_ARB_vertex_program  _HAVE_FULL_GL
 300
 301 #define FEATURE_ARB_vertex_shader _HAVE_FULL_GL
 302 #define FEATURE_ARB_fragment_shader _HAVE_FULL_GL
 303 #define FEATURE_ARB_shader_objects (FEATURE_ARB_vertex_shader || FEATURE_ARB_fragment_shader)
 304 #define FEATURE_ARB_shading_language_100 FEATURE_ARB_shader_objects
 305 #define FEATURE_ARB_shading_language_120 FEATURE_ARB_shader_objects
 306
 307 #define FEATURE_EXT_framebuffer_blit _HAVE_FULL_GL
 308 #define FEATURE_EXT_framebuffer_object _HAVE_FULL_GL
 309 #define FEATURE_EXT_pixel_buffer_object  _HAVE_FULL_GL
 310 #define FEATURE_EXT_texture_sRGB _HAVE_FULL_GL
 311 #define FEATURE_EXT_timer_query  _HAVE_FULL_GL
 312 #define FEATURE_ATI_fragment_shader _HAVE_FULL_GL
 313 #define FEATURE_MESA_program_debug  _HAVE_FULL_GL
 314 #define FEATURE_NV_fence  _HAVE_FULL_GL
 315 #define FEATURE_NV_fragment_program  _HAVE_FULL_GL
 316 #define FEATURE_NV_vertex_program  _HAVE_FULL_GL
 317 /*@}*/
 318
 319
 320 /**
 321  * Maximum number of temporary vertices required for clipping.
 322  *
 323  * Used in array_cache and tnl modules.
 324  */
 325 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 326
 327
 328 #endif /* MESA_CONFIG_H_INCLUDED */