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