config.h revision da7bd6a90e1fee5c16327338fd251c0f6be34e36
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/** Number of 1D/2D texture mipmap levels */ 101#define MAX_TEXTURE_LEVELS 13 102 103/** Number of 3D texture mipmap levels */ 104#define MAX_3D_TEXTURE_LEVELS 9 105 106/** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */ 107#define MAX_CUBE_TEXTURE_LEVELS 13 108 109/** Maximum rectangular texture size - GL_NV_texture_rectangle */ 110#define MAX_TEXTURE_RECT_SIZE 4096 111 112/** Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array */ 113#define MAX_ARRAY_TEXTURE_LAYERS 64 114 115/** 116 * Max number of texture coordinate units. This mainly just applies to 117 * the fixed-function vertex code. This will be difficult to raise above 118 * eight because of various vertex attribute bitvectors. 119 */ 120#define MAX_TEXTURE_COORD_UNITS 8 121 122/** 123 * Max number of texture image units. Also determines number of texture 124 * samplers in shaders. 125 */ 126#define MAX_TEXTURE_IMAGE_UNITS 16 127 128/** 129 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS. 130 * This value is only used for dimensioning arrays. 131 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the 132 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be 133 * used almost everywhere else. 134 */ 135#define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS) 136 137 138/** 139 * Maximum viewport/image width. Must accomodate all texture sizes too. 140 */ 141 142#ifndef MAX_WIDTH 143# define MAX_WIDTH 4096 144#endif 145/** Maximum viewport/image height */ 146#ifndef MAX_HEIGHT 147# define MAX_HEIGHT 4096 148#endif 149 150/** Maxmimum size for CVA. May be overridden by the drivers. */ 151#define MAX_ARRAY_LOCK_SIZE 3000 152 153/** Subpixel precision for antialiasing, window coordinate snapping */ 154#define SUB_PIXEL_BITS 4 155 156/** Size of histogram tables */ 157#define HISTOGRAM_TABLE_SIZE 256 158 159/** Max convolution filter width */ 160#define MAX_CONVOLUTION_WIDTH 9 161/** Max convolution filter height */ 162#define MAX_CONVOLUTION_HEIGHT 9 163 164/** For GL_ARB_texture_compression */ 165#define MAX_COMPRESSED_TEXTURE_FORMATS 25 166 167/** For GL_EXT_texture_filter_anisotropic */ 168#define MAX_TEXTURE_MAX_ANISOTROPY 16.0 169 170/** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */ 171#define MAX_TEXTURE_LOD_BIAS 12.0 172 173/** For any program target/extension */ 174/*@{*/ 175#define MAX_PROGRAM_INSTRUCTIONS (16 * 1024) 176 177/** 178 * Per-program constants (power of two) 179 * 180 * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assmebly shader 181 * and GLSL shader names for the same thing. They should \b always have the 182 * same value. Each refers to the number of vec4 values supplied as 183 * per-program parameters. 184 */ 185/*@{*/ 186#define MAX_PROGRAM_LOCAL_PARAMS 1024 187#define MAX_UNIFORMS 1024 188/*@}*/ 189 190/** 191 * Per-context constants (power of two) 192 * 193 * \note 194 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS 195 * and \c MAX_VERTEX_PROGRAM_PARAMS. Otherwise some applications will make 196 * incorrect assumptions. 197 */ 198#define MAX_PROGRAM_ENV_PARAMS 256 199 200#define MAX_PROGRAM_MATRICES 8 201#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4 202#define MAX_PROGRAM_CALL_DEPTH 8 203#define MAX_PROGRAM_TEMPS 256 204#define MAX_PROGRAM_ADDRESS_REGS 2 205#define MAX_VARYING 16 /**< number of float[4] vectors */ 206#define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS 207#define MAX_PROGRAM_INPUTS 32 208#define MAX_PROGRAM_OUTPUTS 64 209/*@}*/ 210 211/** For GL_ARB_vertex_program */ 212/*@{*/ 213#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1 214#define MAX_VERTEX_PROGRAM_PARAMS MAX_UNIFORMS 215/*@}*/ 216 217/** For GL_ARB_fragment_program */ 218/*@{*/ 219#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0 220/*@}*/ 221 222/** For GL_NV_vertex_program */ 223/*@{*/ 224#define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128 225#define MAX_NV_VERTEX_PROGRAM_TEMPS 12 226#define MAX_NV_VERTEX_PROGRAM_PARAMS 96 227#define MAX_NV_VERTEX_PROGRAM_INPUTS 16 228#define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15 229/*@}*/ 230 231/** For GL_NV_fragment_program */ 232/*@{*/ 233#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */ 234#define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96 235#define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64 236#define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12 237#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3 238#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2 239/*@}*/ 240 241 242/** For GL_ARB_vertex_shader */ 243/*@{*/ 244#define MAX_VERTEX_GENERIC_ATTRIBS 16 245#define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS 246#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_VERTEX_TEXTURE_IMAGE_UNITS + \ 247 MAX_TEXTURE_IMAGE_UNITS) 248/*@}*/ 249 250 251/** For GL_ARB_draw_buffers */ 252/*@{*/ 253#define MAX_DRAW_BUFFERS 8 254/*@}*/ 255 256 257/** For GL_EXT_framebuffer_object */ 258/*@{*/ 259#define MAX_COLOR_ATTACHMENTS 8 260/*@}*/ 261 262/** For GL_ATI_envmap_bump - support bump mapping on first 8 units */ 263#define SUPPORTED_ATI_BUMP_UNITS 0xff 264 265/** For GL_EXT_transform_feedback */ 266#define MAX_FEEDBACK_ATTRIBS 32 267 268/** For GL_ARB_geometry_shader4 */ 269/*@{*/ 270#define MAX_GEOMETRY_TEXTURE_IMAGE_UNITS 8 271#define MAX_GEOMETRY_VARYING_COMPONENTS 32 272#define MAX_VERTEX_VARYING_COMPONENTS 32 273#define MAX_GEOMETRY_UNIFORM_COMPONENTS 512 274#define MAX_GEOMETRY_OUTPUT_VERTICES 256 275#define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS 1024 276/*@}*/ 277 278 279/** 280 * \name Mesa-specific parameters 281 */ 282/*@{*/ 283 284 285/** 286 * If non-zero use GLdouble for walking triangle edges, for better accuracy. 287 */ 288#define TRIANGLE_WALK_DOUBLE 0 289 290 291/** 292 * Bits per depth buffer value (max is 32). 293 */ 294#ifndef DEFAULT_SOFTWARE_DEPTH_BITS 295#define DEFAULT_SOFTWARE_DEPTH_BITS 16 296#endif 297/** Depth buffer data type */ 298#if DEFAULT_SOFTWARE_DEPTH_BITS <= 16 299#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort 300#else 301#define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint 302#endif 303 304 305/** 306 * Bits per stencil value: 8 307 */ 308#define STENCIL_BITS 8 309 310 311/** 312 * Bits per color channel: 8, 16 or 32 313 */ 314#ifndef CHAN_BITS 315#define CHAN_BITS 8 316#endif 317 318 319/* 320 * Color channel component order 321 * 322 * \note Changes will almost certainly cause problems at this time. 323 */ 324#define RCOMP 0 325#define GCOMP 1 326#define BCOMP 2 327#define ACOMP 3 328 329 330/** 331 * Maximum number of temporary vertices required for clipping. 332 * 333 * Used in array_cache and tnl modules. 334 */ 335#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1) 336 337 338#endif /* MESA_CONFIG_H_INCLUDED */ 339