config.h revision 5b2f8dc01300058d43d8043aa897722f39657e93
1/* 2 * Mesa 3-D graphics library 3 * Version: 7.3 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#include "main/mfeatures.h" 36 37 38/** 39 * \name OpenGL implementation limits 40 */ 41/*@{*/ 42 43/** Maximum modelview matrix stack depth */ 44#define MAX_MODELVIEW_STACK_DEPTH 32 45 46/** Maximum projection matrix stack depth */ 47#define MAX_PROJECTION_STACK_DEPTH 32 48 49/** Maximum texture matrix stack depth */ 50#define MAX_TEXTURE_STACK_DEPTH 10 51 52/** Maximum color matrix stack depth */ 53#define MAX_COLOR_STACK_DEPTH 4 54 55/** Maximum attribute stack depth */ 56#define MAX_ATTRIB_STACK_DEPTH 16 57 58/** Maximum client attribute stack depth */ 59#define MAX_CLIENT_ATTRIB_STACK_DEPTH 16 60 61/** Maximum recursion depth of display list calls */ 62#define MAX_LIST_NESTING 64 63 64/** Maximum number of lights */ 65#define MAX_LIGHTS 8 66 67/** Maximum user-defined clipping planes */ 68#define MAX_CLIP_PLANES 6 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 4 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/** Number of 1D/2D texture mipmap levels */ 104#define MAX_TEXTURE_LEVELS 13 105 106/** Number of 3D texture mipmap levels */ 107#define MAX_3D_TEXTURE_LEVELS 9 108 109/** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */ 110#define MAX_CUBE_TEXTURE_LEVELS 13 111 112/** Maximum rectangular texture size - GL_NV_texture_rectangle */ 113#define MAX_TEXTURE_RECT_SIZE 4096 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#define MAX_WIDTH 4096 145/** Maximum viewport/image height */ 146#define MAX_HEIGHT 4096 147 148/** Maxmimum size for CVA. May be overridden by the drivers. */ 149#define MAX_ARRAY_LOCK_SIZE 3000 150 151/** Subpixel precision for antialiasing, window coordinate snapping */ 152#define SUB_PIXEL_BITS 4 153 154/** Size of histogram tables */ 155#define HISTOGRAM_TABLE_SIZE 256 156 157/** Max convolution filter width */ 158#define MAX_CONVOLUTION_WIDTH 9 159/** Max convolution filter height */ 160#define MAX_CONVOLUTION_HEIGHT 9 161 162/** For GL_ARB_texture_compression */ 163#define MAX_COMPRESSED_TEXTURE_FORMATS 25 164 165/** For GL_EXT_texture_filter_anisotropic */ 166#define MAX_TEXTURE_MAX_ANISOTROPY 16.0 167 168/** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */ 169#define MAX_TEXTURE_LOD_BIAS 12.0 170 171/** For GL_ARB_vertex_program */ 172/*@{*/ 173#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1 174#define MAX_VERTEX_PROGRAM_ATTRIBS 16 175/*@}*/ 176 177/** For GL_ARB_fragment_program */ 178/*@{*/ 179#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0 180/*@}*/ 181 182/** For any program target/extension */ 183/*@{*/ 184#define MAX_PROGRAM_INSTRUCTIONS (16 * 1024) 185#define MAX_PROGRAM_LOCAL_PARAMS 256 /**< per-program constants (power of two) */ 186#define MAX_PROGRAM_ENV_PARAMS 128 187#define MAX_PROGRAM_MATRICES 8 188#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4 189#define MAX_PROGRAM_CALL_DEPTH 8 190#define MAX_PROGRAM_TEMPS 128 191#define MAX_PROGRAM_ADDRESS_REGS 2 192#define MAX_UNIFORMS 1024 /**< number of vec4 uniforms */ 193#define MAX_VARYING 8 /**< number of float[4] vectors */ 194#define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS 195#define MAX_PROGRAM_INPUTS 32 196#define MAX_PROGRAM_OUTPUTS 32 197/*@}*/ 198 199/** For GL_NV_vertex_program */ 200/*@{*/ 201#define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128 202#define MAX_NV_VERTEX_PROGRAM_TEMPS 12 203#define MAX_NV_VERTEX_PROGRAM_PARAMS MAX_PROGRAM_ENV_PARAMS 204#define MAX_NV_VERTEX_PROGRAM_INPUTS 16 205#define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15 206/*@}*/ 207 208/** For GL_NV_fragment_program */ 209/*@{*/ 210#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */ 211#define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96 212#define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64 213#define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12 214#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3 215#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2 216/*@}*/ 217 218 219/** For GL_ARB_vertex_shader */ 220/*@{*/ 221#define MAX_VERTEX_ATTRIBS 16 222#define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS 223#define MAX_COMBINED_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS 224/*@}*/ 225 226 227/** For GL_ARB_draw_buffers */ 228/*@{*/ 229#define MAX_DRAW_BUFFERS 4 230/*@}*/ 231 232 233/** For GL_EXT_framebuffer_object */ 234/*@{*/ 235#define MAX_COLOR_ATTACHMENTS 8 236/*@}*/ 237 238 239 240/** 241 * \name Mesa-specific parameters 242 */ 243/*@{*/ 244 245 246/** 247 * If non-zero use GLdouble for walking triangle edges, for better accuracy. 248 */ 249#define TRIANGLE_WALK_DOUBLE 0 250 251 252/** 253 * Bits per depth buffer value (max is 32). 254 */ 255#ifndef DEFAULT_SOFTWARE_DEPTH_BITS 256#define DEFAULT_SOFTWARE_DEPTH_BITS 16 257#endif 258/** Depth buffer data type */ 259#if DEFAULT_SOFTWARE_DEPTH_BITS <= 16 260#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort 261#else 262#define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint 263#endif 264 265 266/** 267 * Bits per stencil value: 8 268 */ 269#define STENCIL_BITS 8 270 271 272/** 273 * Bits per color channel: 8, 16 or 32 274 */ 275#ifndef CHAN_BITS 276#define CHAN_BITS 8 277#endif 278 279 280/* 281 * Color channel component order 282 * 283 * \note Changes will almost certainly cause problems at this time. 284 */ 285#define RCOMP 0 286#define GCOMP 1 287#define BCOMP 2 288#define ACOMP 3 289 290 291/** 292 * Maximum number of temporary vertices required for clipping. 293 * 294 * Used in array_cache and tnl modules. 295 */ 296#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1) 297 298 299#endif /* MESA_CONFIG_H_INCLUDED */ 300