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 attribute stack depth */ 50 #define MAX_ATTRIB_STACK_DEPTH 16 51 52 /** Maximum client attribute stack depth */ 53 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16 54 55 /** Maximum recursion depth of display list calls */ 56 #define MAX_LIST_NESTING 64 57 58 /** Maximum number of lights */ 59 #define MAX_LIGHTS 8 60 61 /** 62 * Maximum number of user-defined clipping planes supported by any driver in 63 * Mesa. This is used to size arrays. 64 */ 65 #define MAX_CLIP_PLANES 8 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 #define MAX_EVAL_ORDER 30 75 76 /** Maximum Name stack depth */ 77 #define MAX_NAME_STACK_DEPTH 64 78 79 /** Minimum point size */ 80 #define MIN_POINT_SIZE 1.0 81 /** Maximum point size */ 82 #define MAX_POINT_SIZE 60.0 83 /** Point size granularity */ 84 #define POINT_SIZE_GRANULARITY 0.1 85 86 /** Minimum line width */ 87 #define MIN_LINE_WIDTH 1.0 88 /** Maximum line width */ 89 #define MAX_LINE_WIDTH 10.0 90 /** Line width granularity */ 91 #define LINE_WIDTH_GRANULARITY 0.1 92 93 /** Max texture palette / color table size */ 94 #define MAX_COLOR_TABLE_SIZE 256 95 96 /** Max memory to allow for a single texture image (in megabytes) */ 97 #define MAX_TEXTURE_MBYTES 1024 98 99 /** Number of 1D/2D texture mipmap levels */ 100 #define MAX_TEXTURE_LEVELS 15 101 102 /** Number of 3D texture mipmap levels */ 103 #define MAX_3D_TEXTURE_LEVELS 15 104 105 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */ 106 #define MAX_CUBE_TEXTURE_LEVELS 15 107 108 /** Maximum rectangular texture size - GL_NV_texture_rectangle */ 109 #define MAX_TEXTURE_RECT_SIZE 16384 110 111 /** 112 * Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array 113 */ 114 #define MAX_ARRAY_TEXTURE_LAYERS 64 115 116 /** 117 * Max number of texture coordinate units. This mainly just applies to 118 * the fixed-function vertex code. This will be difficult to raise above 119 * eight because of various vertex attribute bitvectors. 120 */ 121 #define MAX_TEXTURE_COORD_UNITS 8 122 123 /** 124 * Max number of texture image units. Also determines number of texture 125 * samplers in shaders. 126 */ 127 #define MAX_TEXTURE_IMAGE_UNITS 16 128 129 /** 130 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS. 131 * This value is only used for dimensioning arrays. 132 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the 133 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be 134 * used almost everywhere else. 135 */ 136 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS) 137 138 139 /** Maximum viewport size */ 140 #define MAX_VIEWPORT_WIDTH 16384 141 #define MAX_VIEWPORT_HEIGHT 16384 142 143 /** Maxmimum size for CVA. May be overridden by the drivers. */ 144 #define MAX_ARRAY_LOCK_SIZE 3000 145 146 /** Subpixel precision for antialiasing, window coordinate snapping */ 147 #define SUB_PIXEL_BITS 4 148 149 /** For GL_ARB_texture_compression */ 150 #define MAX_COMPRESSED_TEXTURE_FORMATS 25 151 152 /** For GL_EXT_texture_filter_anisotropic */ 153 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0 154 155 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */ 156 #define MAX_TEXTURE_LOD_BIAS 14.0 157 158 /** For any program target/extension */ 159 /*@{*/ 160 #define MAX_PROGRAM_INSTRUCTIONS (16 * 1024) 161 162 /** 163 * Per-program constants (power of two) 164 * 165 * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader 166 * and GLSL shader names for the same thing. They should \b always have the 167 * same value. Each refers to the number of vec4 values supplied as 168 * per-program parameters. 169 */ 170 /*@{*/ 171 #define MAX_PROGRAM_LOCAL_PARAMS 4096 172 #define MAX_UNIFORMS 4096 173 /*@}*/ 174 175 /** 176 * Per-context constants (power of two) 177 * 178 * \note 179 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS 180 * and \c MAX_VERTEX_PROGRAM_PARAMS. Otherwise some applications will make 181 * incorrect assumptions. 182 */ 183 #define MAX_PROGRAM_ENV_PARAMS 256 184 185 #define MAX_PROGRAM_MATRICES 8 186 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4 187 #define MAX_PROGRAM_CALL_DEPTH 8 188 #define MAX_PROGRAM_TEMPS 256 189 #define MAX_PROGRAM_ADDRESS_REGS 2 190 #define MAX_VARYING 32 /**< number of float[4] vectors */ 191 #define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS 192 #define MAX_PROGRAM_INPUTS 32 193 #define MAX_PROGRAM_OUTPUTS 64 194 /*@}*/ 195 196 /** For GL_ARB_vertex_program */ 197 /*@{*/ 198 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1 199 #define MAX_VERTEX_PROGRAM_PARAMS MAX_UNIFORMS 200 /*@}*/ 201 202 /** For GL_ARB_fragment_program */ 203 /*@{*/ 204 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0 205 /*@}*/ 206 207 /** For GL_NV_vertex_program */ 208 /*@{*/ 209 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128 210 #define MAX_NV_VERTEX_PROGRAM_TEMPS 12 211 #define MAX_NV_VERTEX_PROGRAM_PARAMS 96 212 #define MAX_NV_VERTEX_PROGRAM_INPUTS 16 213 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15 214 /*@}*/ 215 216 /** For GL_NV_fragment_program */ 217 /*@{*/ 218 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */ 219 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96 220 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64 221 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12 222 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3 223 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2 224 /*@}*/ 225 226 227 /** For GL_ARB_vertex_shader */ 228 /*@{*/ 229 #define MAX_VERTEX_GENERIC_ATTRIBS 16 230 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS 231 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_VERTEX_TEXTURE_IMAGE_UNITS + \ 232 MAX_TEXTURE_IMAGE_UNITS) 233 /*@}*/ 234 235 236 /** For GL_ARB_draw_buffers */ 237 /*@{*/ 238 #define MAX_DRAW_BUFFERS 8 239 /*@}*/ 240 241 242 /** For GL_EXT_framebuffer_object */ 243 /*@{*/ 244 #define MAX_COLOR_ATTACHMENTS 8 245 #define MAX_RENDERBUFFER_SIZE 16384 246 /*@}*/ 247 248 /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */ 249 #define SUPPORTED_ATI_BUMP_UNITS 0xff 250 251 /** For GL_EXT_transform_feedback */ 252 #define MAX_FEEDBACK_BUFFERS 4 253 #define MAX_FEEDBACK_ATTRIBS 32 254 255 /** For GL_ARB_geometry_shader4 */ 256 /*@{*/ 257 #define MAX_GEOMETRY_TEXTURE_IMAGE_UNITS 8 258 #define MAX_GEOMETRY_VARYING_COMPONENTS 32 259 #define MAX_VERTEX_VARYING_COMPONENTS 32 260 #define MAX_GEOMETRY_UNIFORM_COMPONENTS 512 261 #define MAX_GEOMETRY_OUTPUT_VERTICES 256 262 #define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS 1024 263 /*@}*/ 264 265 /** For GL_ARB_debug_output */ 266 /*@{*/ 267 #define MAX_DEBUG_LOGGED_MESSAGES 10 268 #define MAX_DEBUG_MESSAGE_LENGTH 4096 269 /*@}*/ 270 271 272 /* 273 * Color channel component order 274 * 275 * \note Changes will almost certainly cause problems at this time. 276 */ 277 #define RCOMP 0 278 #define GCOMP 1 279 #define BCOMP 2 280 #define ACOMP 3 281 282 283 /** 284 * Maximum number of temporary vertices required for clipping. 285 * 286 * Used in array_cache and tnl modules. 287 */ 288 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1) 289 290 291 #endif /* MESA_CONFIG_H_INCLUDED */ 292