config.h revision cfecffeedcd1a361499e74bec7ca61790db0036c
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/** 65 * Maximum number of user-defined clipping planes supported by any driver in 66 * Mesa. This is used to size arrays. 67 */ 68#define MAX_CLIP_PLANES 8 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 1 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/** Max memory to allow for a single texture image (in megabytes) */ 104#define MAX_TEXTURE_MBYTES 1024 105 106/** Number of 1D/2D texture mipmap levels */ 107#define MAX_TEXTURE_LEVELS 15 108 109/** Number of 3D texture mipmap levels */ 110#define MAX_3D_TEXTURE_LEVELS 15 111 112/** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */ 113#define MAX_CUBE_TEXTURE_LEVELS 15 114 115/** Maximum rectangular texture size - GL_NV_texture_rectangle */ 116#define MAX_TEXTURE_RECT_SIZE 16384 117 118/** 119 * Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array 120 */ 121#define MAX_ARRAY_TEXTURE_LAYERS 64 122 123/** 124 * Max number of texture coordinate units. This mainly just applies to 125 * the fixed-function vertex code. This will be difficult to raise above 126 * eight because of various vertex attribute bitvectors. 127 */ 128#define MAX_TEXTURE_COORD_UNITS 8 129 130/** 131 * Max number of texture image units. Also determines number of texture 132 * samplers in shaders. 133 */ 134#define MAX_TEXTURE_IMAGE_UNITS 16 135 136/** 137 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS. 138 * This value is only used for dimensioning arrays. 139 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the 140 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be 141 * used almost everywhere else. 142 */ 143#define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS) 144 145 146/** 147 * Maximum viewport/image size. Must accomodate all texture sizes too. 148 */ 149#ifndef MAX_WIDTH 150# define MAX_WIDTH 16384 151#endif 152#ifndef MAX_HEIGHT 153# define MAX_HEIGHT 16384 154#endif 155 156/** Maxmimum size for CVA. May be overridden by the drivers. */ 157#define MAX_ARRAY_LOCK_SIZE 3000 158 159/** Subpixel precision for antialiasing, window coordinate snapping */ 160#define SUB_PIXEL_BITS 4 161 162/** Size of histogram tables */ 163#define HISTOGRAM_TABLE_SIZE 256 164 165/** Max convolution filter width */ 166#define MAX_CONVOLUTION_WIDTH 9 167/** Max convolution filter height */ 168#define MAX_CONVOLUTION_HEIGHT 9 169 170/** For GL_ARB_texture_compression */ 171#define MAX_COMPRESSED_TEXTURE_FORMATS 25 172 173/** For GL_EXT_texture_filter_anisotropic */ 174#define MAX_TEXTURE_MAX_ANISOTROPY 16.0 175 176/** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */ 177#define MAX_TEXTURE_LOD_BIAS 14.0 178 179/** For any program target/extension */ 180/*@{*/ 181#define MAX_PROGRAM_INSTRUCTIONS (16 * 1024) 182 183/** 184 * Per-program constants (power of two) 185 * 186 * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader 187 * and GLSL shader names for the same thing. They should \b always have the 188 * same value. Each refers to the number of vec4 values supplied as 189 * per-program parameters. 190 */ 191/*@{*/ 192#define MAX_PROGRAM_LOCAL_PARAMS 4096 193#define MAX_UNIFORMS 4096 194/*@}*/ 195 196/** 197 * Per-context constants (power of two) 198 * 199 * \note 200 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS 201 * and \c MAX_VERTEX_PROGRAM_PARAMS. Otherwise some applications will make 202 * incorrect assumptions. 203 */ 204#define MAX_PROGRAM_ENV_PARAMS 256 205 206#define MAX_PROGRAM_MATRICES 8 207#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4 208#define MAX_PROGRAM_CALL_DEPTH 8 209#define MAX_PROGRAM_TEMPS 256 210#define MAX_PROGRAM_ADDRESS_REGS 2 211#define MAX_VARYING 16 /**< number of float[4] vectors */ 212#define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS 213#define MAX_PROGRAM_INPUTS 32 214#define MAX_PROGRAM_OUTPUTS 64 215/*@}*/ 216 217/** For GL_ARB_vertex_program */ 218/*@{*/ 219#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1 220#define MAX_VERTEX_PROGRAM_PARAMS MAX_UNIFORMS 221/*@}*/ 222 223/** For GL_ARB_fragment_program */ 224/*@{*/ 225#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0 226/*@}*/ 227 228/** For GL_NV_vertex_program */ 229/*@{*/ 230#define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128 231#define MAX_NV_VERTEX_PROGRAM_TEMPS 12 232#define MAX_NV_VERTEX_PROGRAM_PARAMS 96 233#define MAX_NV_VERTEX_PROGRAM_INPUTS 16 234#define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15 235/*@}*/ 236 237/** For GL_NV_fragment_program */ 238/*@{*/ 239#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */ 240#define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96 241#define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64 242#define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12 243#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3 244#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2 245/*@}*/ 246 247 248/** For GL_ARB_vertex_shader */ 249/*@{*/ 250#define MAX_VERTEX_GENERIC_ATTRIBS 16 251#define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS 252#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_VERTEX_TEXTURE_IMAGE_UNITS + \ 253 MAX_TEXTURE_IMAGE_UNITS) 254/*@}*/ 255 256 257/** For GL_ARB_draw_buffers */ 258/*@{*/ 259#define MAX_DRAW_BUFFERS 8 260/*@}*/ 261 262 263/** For GL_EXT_framebuffer_object */ 264/*@{*/ 265#define MAX_COLOR_ATTACHMENTS 8 266/*@}*/ 267 268/** For GL_ATI_envmap_bump - support bump mapping on first 8 units */ 269#define SUPPORTED_ATI_BUMP_UNITS 0xff 270 271/** For GL_EXT_transform_feedback */ 272#define MAX_FEEDBACK_ATTRIBS 32 273 274/** For GL_ARB_geometry_shader4 */ 275/*@{*/ 276#define MAX_GEOMETRY_TEXTURE_IMAGE_UNITS 8 277#define MAX_GEOMETRY_VARYING_COMPONENTS 32 278#define MAX_VERTEX_VARYING_COMPONENTS 32 279#define MAX_GEOMETRY_UNIFORM_COMPONENTS 512 280#define MAX_GEOMETRY_OUTPUT_VERTICES 256 281#define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS 1024 282/*@}*/ 283 284 285/** 286 * \name Mesa-specific parameters 287 */ 288/*@{*/ 289 290 291/** 292 * If non-zero use GLdouble for walking triangle edges, for better accuracy. 293 */ 294#define TRIANGLE_WALK_DOUBLE 0 295 296 297/** 298 * Bits per depth buffer value (max is 32). 299 */ 300#ifndef DEFAULT_SOFTWARE_DEPTH_BITS 301#define DEFAULT_SOFTWARE_DEPTH_BITS 16 302#endif 303/** Depth buffer data type */ 304#if DEFAULT_SOFTWARE_DEPTH_BITS <= 16 305#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort 306#else 307#define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint 308#endif 309 310 311/** 312 * Bits per stencil value: 8 313 */ 314#define STENCIL_BITS 8 315 316 317/** 318 * For swrast, bits per color channel: 8, 16 or 32 319 */ 320#ifndef CHAN_BITS 321#define CHAN_BITS 8 322#endif 323 324 325/* 326 * Color channel component order 327 * 328 * \note Changes will almost certainly cause problems at this time. 329 */ 330#define RCOMP 0 331#define GCOMP 1 332#define BCOMP 2 333#define ACOMP 3 334 335 336/** 337 * Maximum number of temporary vertices required for clipping. 338 * 339 * Used in array_cache and tnl modules. 340 */ 341#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1) 342 343 344#endif /* MESA_CONFIG_H_INCLUDED */ 345