config.h revision df6155fcff66034457b3165f5df0a61ccfc41314
1/** 2 * \file config.h 3 * Tunable configuration parameters. 4 */ 5 6/* 7 * Mesa 3-D graphics library 8 * Version: 7.1 9 * 10 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 11 * 12 * Permission is hereby granted, free of charge, to any person obtaining a 13 * copy of this software and associated documentation files (the "Software"), 14 * to deal in the Software without restriction, including without limitation 15 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 16 * and/or sell copies of the Software, and to permit persons to whom the 17 * Software is furnished to do so, subject to the following conditions: 18 * 19 * The above copyright notice and this permission notice shall be included 20 * in all copies or substantial portions of the Software. 21 * 22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 23 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 25 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 26 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 27 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 28 */ 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 12 105 106/** 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 12 111 112/** Maximum rectangular texture size - GL_NV_texture_rectangle */ 113#define MAX_TEXTURE_RECT_SIZE 2048 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/** Number of texture units - GL_ARB_multitexture 119 * This needs to be the larger of MAX_TEXTURE_COORD_UNITS and 120 * MAX_TEXTURE_IMAGE_UNITS seen below, since MAX_TEXTURE_UNITS is used 121 * to dimension some arrays that store both coord and image data. 122*/ 123#define MAX_TEXTURE_UNITS 8 124 125/*@}*/ 126 127 128/** 129 * \name Separate numbers of texture coordinates and texture image units. 130 * 131 * These values will eventually replace most instances of MAX_TEXTURE_UNITS. 132 * We should always have MAX_TEXTURE_COORD_UNITS <= MAX_TEXTURE_IMAGE_UNITS. 133 * And, GL_MAX_TEXTURE_UNITS <= MAX_TEXTURE_COORD_UNITS. 134 */ 135/*@{*/ 136#define MAX_TEXTURE_COORD_UNITS 8 137#define MAX_TEXTURE_IMAGE_UNITS 8 138/*@}*/ 139 140/** 141 * Maximum viewport/image width. Must accomodate all texture sizes too. 142 */ 143#define MAX_WIDTH 4096 144/** Maximum viewport/image height */ 145#define MAX_HEIGHT 4096 146 147/** Maxmimum size for CVA. May be overridden by the drivers. */ 148#define MAX_ARRAY_LOCK_SIZE 3000 149 150/** Subpixel precision for antialiasing, window coordinate snapping */ 151#define SUB_PIXEL_BITS 4 152 153/** Size of histogram tables */ 154#define HISTOGRAM_TABLE_SIZE 256 155 156/** Max convolution filter width */ 157#define MAX_CONVOLUTION_WIDTH 9 158/** Max convolution filter height */ 159#define MAX_CONVOLUTION_HEIGHT 9 160 161/** For GL_ARB_texture_compression */ 162#define MAX_COMPRESSED_TEXTURE_FORMATS 25 163 164/** For GL_EXT_texture_filter_anisotropic */ 165#define MAX_TEXTURE_MAX_ANISOTROPY 16.0 166 167/** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */ 168#define MAX_TEXTURE_LOD_BIAS 11.0 169 170/** For GL_ARB_vertex_program */ 171/*@{*/ 172#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1 173#define MAX_VERTEX_PROGRAM_ATTRIBS 16 174/*@}*/ 175 176/** For GL_ARB_fragment_program */ 177/*@{*/ 178#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0 179/*@}*/ 180 181/** For any program target/extension */ 182/*@{*/ 183#define MAX_PROGRAM_INSTRUCTIONS (16 * 1024) 184#define MAX_PROGRAM_LOCAL_PARAMS 128 /* KW: power of two */ 185#define MAX_PROGRAM_ENV_PARAMS 128 186#define MAX_PROGRAM_MATRICES 8 187#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4 188#define MAX_PROGRAM_CALL_DEPTH 8 189#define MAX_PROGRAM_TEMPS 128 190#define MAX_PROGRAM_ADDRESS_REGS 2 191#define MAX_UNIFORMS 128 /**< number of float components */ 192#define MAX_VARYING 8 /**< number of float[4] vectors */ 193#define MAX_SAMPLERS 8 194#define MAX_PROGRAM_INPUTS 32 195#define MAX_PROGRAM_OUTPUTS 32 196/*@}*/ 197 198/** For GL_NV_vertex_program */ 199/*@{*/ 200#define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128 201#define MAX_NV_VERTEX_PROGRAM_TEMPS 12 202#define MAX_NV_VERTEX_PROGRAM_PARAMS MAX_PROGRAM_ENV_PARAMS 203#define MAX_NV_VERTEX_PROGRAM_INPUTS 16 204#define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15 205/*@}*/ 206 207/** For GL_NV_fragment_program */ 208/*@{*/ 209#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */ 210#define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96 211#define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64 212#define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12 213#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3 214#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2 215/*@}*/ 216 217 218/** For GL_ARB_vertex_shader */ 219/*@{*/ 220#define MAX_VERTEX_ATTRIBS 16 221#define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_UNITS 222#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS) 223/*@}*/ 224 225 226/** For GL_ARB_draw_buffers */ 227/*@{*/ 228#define MAX_DRAW_BUFFERS 4 229/*@}*/ 230 231 232/** For GL_EXT_framebuffer_object */ 233/*@{*/ 234#define MAX_COLOR_ATTACHMENTS 8 235/*@}*/ 236 237 238 239/** 240 * \name Mesa-specific parameters 241 */ 242/*@{*/ 243 244 245/** 246 * If non-zero use GLdouble for walking triangle edges, for better accuracy. 247 */ 248#define TRIANGLE_WALK_DOUBLE 0 249 250 251/** 252 * Bits per depth buffer value (max is 32). 253 */ 254#ifndef DEFAULT_SOFTWARE_DEPTH_BITS 255#define DEFAULT_SOFTWARE_DEPTH_BITS 16 256#endif 257/** Depth buffer data type */ 258#if DEFAULT_SOFTWARE_DEPTH_BITS <= 16 259#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort 260#else 261#define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint 262#endif 263 264 265/** 266 * Bits per stencil value: 8 267 */ 268#define STENCIL_BITS 8 269 270 271/** 272 * Bits per color channel: 8, 16 or 32 273 */ 274#ifndef CHAN_BITS 275#define CHAN_BITS 8 276#endif 277 278 279/* 280 * Color channel component order 281 * 282 * \note Changes will almost certainly cause problems at this time. 283 */ 284#define RCOMP 0 285#define GCOMP 1 286#define BCOMP 2 287#define ACOMP 3 288 289 290/** 291 * Maximum number of temporary vertices required for clipping. 292 * 293 * Used in array_cache and tnl modules. 294 */ 295#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1) 296 297 298#endif /* MESA_CONFIG_H_INCLUDED */ 299