1 /* 2 * Mesa 3-D graphics library 3 * Version: 7.5 4 * 5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 6 * Copyright (C) 2008 VMware, Inc. All Rights Reserved. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the "Software"), 10 * to deal in the Software without restriction, including without limitation 11 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12 * and/or sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included 16 * in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 26 /** 27 * \file config.h 28 * Tunable configuration parameters. 29 */ 30 31 #ifndef MESA_CONFIG_H_INCLUDED 32 #define MESA_CONFIG_H_INCLUDED 33 34 35 /** 36 * \name OpenGL implementation limits 37 */ 38 /*@{*/ 39 40 /** Maximum modelview matrix stack depth */ 41 #define MAX_MODELVIEW_STACK_DEPTH 32 42 43 /** Maximum projection matrix stack depth */ 44 #define MAX_PROJECTION_STACK_DEPTH 32 45 46 /** Maximum texture matrix stack depth */ 47 #define MAX_TEXTURE_STACK_DEPTH 10 48 49 /** Maximum color matrix stack depth */ 50 #define MAX_COLOR_STACK_DEPTH 4 51 52 /** Maximum attribute stack depth */ 53 #define MAX_ATTRIB_STACK_DEPTH 16 54 55 /** Maximum client attribute stack depth */ 56 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16 57 58 /** Maximum recursion depth of display list calls */ 59 #define MAX_LIST_NESTING 64 60 61 /** Maximum number of lights */ 62 #define MAX_LIGHTS 8 63 64 /** Maximum user-defined clipping planes */ 65 #define MAX_CLIP_PLANES 6 66 67 /** Maximum pixel map lookup table size */ 68 #define MAX_PIXEL_MAP_TABLE 256 69 70 /** Maximum number of auxillary color buffers */ 71 #define MAX_AUX_BUFFERS 1 72 73 /** Maximum order (degree) of curves */ 74 #ifdef AMIGA 75 # define MAX_EVAL_ORDER 12 76 #else 77 # define MAX_EVAL_ORDER 30 78 #endif 79 80 /** Maximum Name stack depth */ 81 #define MAX_NAME_STACK_DEPTH 64 82 83 /** Minimum point size */ 84 #define MIN_POINT_SIZE 1.0 85 /** Maximum point size */ 86 #define MAX_POINT_SIZE 60.0 87 /** Point size granularity */ 88 #define POINT_SIZE_GRANULARITY 0.1 89 90 /** Minimum line width */ 91 #define MIN_LINE_WIDTH 1.0 92 /** Maximum line width */ 93 #define MAX_LINE_WIDTH 10.0 94 /** Line width granularity */ 95 #define LINE_WIDTH_GRANULARITY 0.1 96 97 /** Max texture palette / color table size */ 98 #define MAX_COLOR_TABLE_SIZE 256 99 100 /** Max memory to allow for a single texture image (in megabytes) */ 101 #define MAX_TEXTURE_MBYTES 1024 102 103 /** Number of 1D/2D texture mipmap levels */ 104 #define MAX_TEXTURE_LEVELS 15 105 106 /** Number of 3D texture mipmap levels */ 107 #define MAX_3D_TEXTURE_LEVELS 15 108 109 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */ 110 #define MAX_CUBE_TEXTURE_LEVELS 15 111 112 /** Maximum rectangular texture size - GL_NV_texture_rectangle */ 113 #define MAX_TEXTURE_RECT_SIZE 16384 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 /** 119 * Max number of texture coordinate units. This mainly just applies to 120 * the fixed-function vertex code. This will be difficult to raise above 121 * eight because of various vertex attribute bitvectors. 122 */ 123 #define MAX_TEXTURE_COORD_UNITS 8 124 125 /** 126 * Max number of texture image units. Also determines number of texture 127 * samplers in shaders. 128 */ 129 #define MAX_TEXTURE_IMAGE_UNITS 16 130 131 /** 132 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS. 133 * This value is only used for dimensioning arrays. 134 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the 135 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be 136 * used almost everywhere else. 137 */ 138 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS) 139 140 141 /** 142 * Maximum viewport/image width. Must accomodate all texture sizes too. 143 */ 144 145 #ifndef MAX_WIDTH 146 # define MAX_WIDTH 16384 147 #endif 148 /** Maximum viewport/image height */ 149 #ifndef MAX_HEIGHT 150 # define MAX_HEIGHT 16384 151 #endif 152 153 /* XXX: hack to prevent stack overflow on windows until all temporary arrays 154 * [MAX_WIDTH] are allocated from the heap */ 155 #ifdef WIN32 156 #undef MAX_TEXTURE_LEVELS 157 #undef MAX_3D_TEXTURE_LEVELS 158 #undef MAX_CUBE_TEXTURE_LEVELS 159 #undef MAX_TEXTURE_RECT_SIZE 160 #undef MAX_WIDTH 161 #undef MAX_HEIGHT 162 #define MAX_TEXTURE_LEVELS 13 163 #define MAX_3D_TEXTURE_LEVELS 9 164 #define MAX_CUBE_TEXTURE_LEVELS 13 165 #define MAX_TEXTURE_RECT_SIZE 4096 166 #define MAX_WIDTH 4096 167 #define MAX_HEIGHT 4096 168 #endif 169 170 /** Maxmimum size for CVA. May be overridden by the drivers. */ 171 #define MAX_ARRAY_LOCK_SIZE 3000 172 173 /** Subpixel precision for antialiasing, window coordinate snapping */ 174 #define SUB_PIXEL_BITS 4 175 176 /** Size of histogram tables */ 177 #define HISTOGRAM_TABLE_SIZE 256 178 179 /** Max convolution filter width */ 180 #define MAX_CONVOLUTION_WIDTH 9 181 /** Max convolution filter height */ 182 #define MAX_CONVOLUTION_HEIGHT 9 183 184 /** For GL_ARB_texture_compression */ 185 #define MAX_COMPRESSED_TEXTURE_FORMATS 25 186 187 /** For GL_EXT_texture_filter_anisotropic */ 188 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0 189 190 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */ 191 #define MAX_TEXTURE_LOD_BIAS 14.0 192 193 /** For any program target/extension */ 194 /*@{*/ 195 #define MAX_PROGRAM_INSTRUCTIONS (16 * 1024) 196 197 /** 198 * Per-program constants (power of two) 199 * 200 * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader 201 * and GLSL shader names for the same thing. They should \b always have the 202 * same value. Each refers to the number of vec4 values supplied as 203 * per-program parameters. 204 */ 205 /*@{*/ 206 #define MAX_PROGRAM_LOCAL_PARAMS 1024 207 #define MAX_UNIFORMS 1024 208 /*@}*/ 209 210 /** 211 * Per-context constants (power of two) 212 * 213 * \note 214 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS 215 * and \c MAX_VERTEX_PROGRAM_PARAMS. Otherwise some applications will make 216 * incorrect assumptions. 217 */ 218 #define MAX_PROGRAM_ENV_PARAMS 256 219 220 #define MAX_PROGRAM_MATRICES 8 221 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4 222 #define MAX_PROGRAM_CALL_DEPTH 8 223 #define MAX_PROGRAM_TEMPS 256 224 #define MAX_PROGRAM_ADDRESS_REGS 2 225 #define MAX_VARYING 16 /**< number of float[4] vectors */ 226 #define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS 227 #define MAX_PROGRAM_INPUTS 32 228 #define MAX_PROGRAM_OUTPUTS 64 229 /*@}*/ 230 231 /** For GL_ARB_vertex_program */ 232 /*@{*/ 233 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1 234 #define MAX_VERTEX_PROGRAM_PARAMS MAX_UNIFORMS 235 /*@}*/ 236 237 /** For GL_ARB_fragment_program */ 238 /*@{*/ 239 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0 240 /*@}*/ 241 242 /** For GL_NV_vertex_program */ 243 /*@{*/ 244 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128 245 #define MAX_NV_VERTEX_PROGRAM_TEMPS 12 246 #define MAX_NV_VERTEX_PROGRAM_PARAMS 96 247 #define MAX_NV_VERTEX_PROGRAM_INPUTS 16 248 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15 249 /*@}*/ 250 251 /** For GL_NV_fragment_program */ 252 /*@{*/ 253 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */ 254 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96 255 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64 256 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12 257 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3 258 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2 259 /*@}*/ 260 261 262 /** For GL_ARB_vertex_shader */ 263 /*@{*/ 264 #define MAX_VERTEX_GENERIC_ATTRIBS 16 265 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS 266 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_VERTEX_TEXTURE_IMAGE_UNITS + \ 267 MAX_TEXTURE_IMAGE_UNITS) 268 /*@}*/ 269 270 271 /** For GL_ARB_draw_buffers */ 272 /*@{*/ 273 #define MAX_DRAW_BUFFERS 8 274 /*@}*/ 275 276 277 /** For GL_EXT_framebuffer_object */ 278 /*@{*/ 279 #define MAX_COLOR_ATTACHMENTS 8 280 /*@}*/ 281 282 /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */ 283 #define SUPPORTED_ATI_BUMP_UNITS 0xff 284 285 /** For GL_EXT_transform_feedback */ 286 #define MAX_FEEDBACK_ATTRIBS 32 287 288 /** For GL_ARB_geometry_shader4 */ 289 /*@{*/ 290 #define MAX_GEOMETRY_TEXTURE_IMAGE_UNITS 8 291 #define MAX_GEOMETRY_VARYING_COMPONENTS 32 292 #define MAX_VERTEX_VARYING_COMPONENTS 32 293 #define MAX_GEOMETRY_UNIFORM_COMPONENTS 512 294 #define MAX_GEOMETRY_OUTPUT_VERTICES 256 295 #define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS 1024 296 /*@}*/ 297 298 299 /** 300 * \name Mesa-specific parameters 301 */ 302 /*@{*/ 303 304 305 /** 306 * If non-zero use GLdouble for walking triangle edges, for better accuracy. 307 */ 308 #define TRIANGLE_WALK_DOUBLE 0 309 310 311 /** 312 * Bits per depth buffer value (max is 32). 313 */ 314 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS 315 #define DEFAULT_SOFTWARE_DEPTH_BITS 16 316 #endif 317 /** Depth buffer data type */ 318 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16 319 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort 320 #else 321 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint 322 #endif 323 324 325 /** 326 * Bits per stencil value: 8 327 */ 328 #define STENCIL_BITS 8 329 330 331 /** 332 * Bits per color channel: 8, 16 or 32 333 */ 334 #ifndef CHAN_BITS 335 #define CHAN_BITS 8 336 #endif 337 338 339 /* 340 * Color channel component order 341 * 342 * \note Changes will almost certainly cause problems at this time. 343 */ 344 #define RCOMP 0 345 #define GCOMP 1 346 #define BCOMP 2 347 #define ACOMP 3 348 349 350 /** 351 * Maximum number of temporary vertices required for clipping. 352 * 353 * Used in array_cache and tnl modules. 354 */ 355 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1) 356 357 358 #endif /* MESA_CONFIG_H_INCLUDED */ 359
