1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 5 * Copyright (C) 2008 VMware, Inc. All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * 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 memory to allow for a single texture image (in megabytes) */ 94 #define MAX_TEXTURE_MBYTES 1024 95 96 /** Number of 1D/2D texture mipmap levels */ 97 #define MAX_TEXTURE_LEVELS 15 98 99 /** Number of 3D texture mipmap levels */ 100 #define MAX_3D_TEXTURE_LEVELS 15 101 102 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */ 103 #define MAX_CUBE_TEXTURE_LEVELS 15 104 105 /** Maximum rectangular texture size - GL_NV_texture_rectangle */ 106 #define MAX_TEXTURE_RECT_SIZE 16384 107 108 /** 109 * Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array 110 */ 111 #define MAX_ARRAY_TEXTURE_LAYERS 64 112 113 /** 114 * Max number of texture coordinate units. This mainly just applies to 115 * the fixed-function vertex code. This will be difficult to raise above 116 * eight because of various vertex attribute bitvectors. 117 */ 118 #define MAX_TEXTURE_COORD_UNITS 8 119 120 /** 121 * Max number of texture image units. Also determines number of texture 122 * samplers in shaders. 123 */ 124 #define MAX_TEXTURE_IMAGE_UNITS 32 125 126 /** 127 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS. 128 * This value is only used for dimensioning arrays. 129 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the 130 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be 131 * used almost everywhere else. 132 */ 133 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS) 134 135 /** Maximum number of viewports supported with ARB_viewport_array */ 136 #define MAX_VIEWPORTS 16 137 138 /** Maximum number of window rectangles supported with EXT_window_rectangles */ 139 #define MAX_WINDOW_RECTANGLES 8 140 141 /** Maximum size for CVA. May be overridden by the drivers. */ 142 #define MAX_ARRAY_LOCK_SIZE 3000 143 144 /** Subpixel precision for antialiasing, window coordinate snapping */ 145 #define SUB_PIXEL_BITS 4 146 147 /** For GL_ARB_texture_compression */ 148 #define MAX_COMPRESSED_TEXTURE_FORMATS 25 149 150 /** For GL_EXT_texture_filter_anisotropic */ 151 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0 152 153 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */ 154 #define MAX_TEXTURE_LOD_BIAS 14.0 155 156 /** For any program target/extension */ 157 /*@{*/ 158 #define MAX_PROGRAM_INSTRUCTIONS (16 * 1024) 159 160 /** 161 * Per-program constants (power of two) 162 * 163 * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader 164 * and GLSL shader names for the same thing. They should \b always have the 165 * same value. Each refers to the number of vec4 values supplied as 166 * per-program parameters. 167 */ 168 /*@{*/ 169 #define MAX_PROGRAM_LOCAL_PARAMS 4096 170 #define MAX_UNIFORMS 4096 171 #define MAX_UNIFORM_BUFFERS 15 /* + 1 default uniform buffer */ 172 #define MAX_SHADER_STORAGE_BUFFERS 16 173 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */ 174 #define MAX_COMBINED_UNIFORM_BUFFERS (MAX_UNIFORM_BUFFERS * 6) 175 #define MAX_COMBINED_SHADER_STORAGE_BUFFERS (MAX_SHADER_STORAGE_BUFFERS * 6) 176 #define MAX_ATOMIC_COUNTERS 4096 177 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */ 178 #define MAX_COMBINED_ATOMIC_BUFFERS (MAX_UNIFORM_BUFFERS * 6) 179 /* Size of an atomic counter in bytes according to ARB_shader_atomic_counters */ 180 #define ATOMIC_COUNTER_SIZE 4 181 #define MAX_IMAGE_UNIFORMS 32 182 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */ 183 #define MAX_IMAGE_UNITS (MAX_IMAGE_UNIFORMS * 6) 184 /*@}*/ 185 186 /** 187 * Per-context constants (power of two) 188 * 189 * \note 190 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS 191 * and \c MAX_VERTEX_PROGRAM_PARAMS. Otherwise some applications will make 192 * incorrect assumptions. 193 */ 194 #define MAX_PROGRAM_ENV_PARAMS 256 195 196 #define MAX_PROGRAM_MATRICES 8 197 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4 198 #define MAX_PROGRAM_CALL_DEPTH 8 199 #define MAX_PROGRAM_TEMPS 256 200 #define MAX_PROGRAM_ADDRESS_REGS 1 201 #define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS 202 #define MAX_PROGRAM_INPUTS 32 203 #define MAX_PROGRAM_OUTPUTS 64 204 /*@}*/ 205 206 /** For GL_ARB_vertex_program */ 207 /*@{*/ 208 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1 209 #define MAX_VERTEX_PROGRAM_PARAMS MAX_UNIFORMS 210 /*@}*/ 211 212 /** For GL_ARB_fragment_program */ 213 /*@{*/ 214 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0 215 #define MAX_FRAGMENT_PROGRAM_PARAMS 64 216 #define MAX_FRAGMENT_PROGRAM_INPUTS 12 217 /*@}*/ 218 219 /** For GL_ARB_vertex_shader */ 220 /*@{*/ 221 #define MAX_VERTEX_GENERIC_ATTRIBS 16 222 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */ 223 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS * 6) 224 /*@}*/ 225 226 227 /** For GL_ARB_draw_buffers */ 228 /*@{*/ 229 #define MAX_DRAW_BUFFERS 8 230 /*@}*/ 231 232 233 /** For GL_EXT_framebuffer_object */ 234 /*@{*/ 235 #define MAX_COLOR_ATTACHMENTS 8 236 #define MAX_RENDERBUFFER_SIZE 16384 237 /*@}*/ 238 239 /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */ 240 #define SUPPORTED_ATI_BUMP_UNITS 0xff 241 242 /** For GL_EXT_transform_feedback */ 243 #define MAX_FEEDBACK_BUFFERS 4 244 #define MAX_FEEDBACK_ATTRIBS 32 245 246 /** For geometry shader */ 247 /*@{*/ 248 #define MAX_GEOMETRY_UNIFORM_COMPONENTS 512 249 #define MAX_GEOMETRY_OUTPUT_VERTICES 256 250 #define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS 1024 251 /*@}*/ 252 253 /** For GL_ARB_debug_output and GL_KHR_debug */ 254 /*@{*/ 255 #define MAX_DEBUG_LOGGED_MESSAGES 10 256 #define MAX_DEBUG_MESSAGE_LENGTH 4096 257 /*@}*/ 258 259 /** For GL_KHR_debug */ 260 /*@{*/ 261 #define MAX_LABEL_LENGTH 256 262 #define MAX_DEBUG_GROUP_STACK_DEPTH 64 263 /*@}*/ 264 265 /** For GL_ARB_gpu_shader5 */ 266 /*@{*/ 267 #define MAX_GEOMETRY_SHADER_INVOCATIONS 32 268 #define MIN_FRAGMENT_INTERPOLATION_OFFSET -0.5 269 #define MAX_FRAGMENT_INTERPOLATION_OFFSET 0.5 270 #define FRAGMENT_INTERPOLATION_OFFSET_BITS 4 271 #define MAX_VERTEX_STREAMS 4 272 /*@}*/ 273 274 /** For GL_ARB_shader_subroutine */ 275 /*@{*/ 276 #define MAX_SUBROUTINES 256 277 #define MAX_SUBROUTINE_UNIFORM_LOCATIONS 1024 278 /*@}*/ 279 280 /** For GL_INTEL_performance_query */ 281 /*@{*/ 282 #define MAX_PERFQUERY_QUERY_NAME_LENGTH 256 283 #define MAX_PERFQUERY_COUNTER_NAME_LENGTH 256 284 #define MAX_PERFQUERY_COUNTER_DESC_LENGTH 1024 285 #define PERFQUERY_HAVE_GPA_EXTENDED_COUNTERS 0 286 /*@}*/ 287 288 /** For GL_ARB_pipeline_statistics_query */ 289 #define MAX_PIPELINE_STATISTICS 11 290 291 /** For GL_ARB_tessellation_shader */ 292 /*@{*/ 293 #define MAX_TESS_GEN_LEVEL 64 294 #define MAX_PATCH_VERTICES 32 295 #define MAX_TESS_PATCH_COMPONENTS 120 296 #define MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS 4096 297 /*@}*/ 298 299 /* 300 * Color channel component order 301 * 302 * \note Changes will almost certainly cause problems at this time. 303 */ 304 #define RCOMP 0 305 #define GCOMP 1 306 #define BCOMP 2 307 #define ACOMP 3 308 309 310 /** 311 * Maximum number of temporary vertices required for clipping. 312 * 313 * Used in array_cache and tnl modules. 314 */ 315 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1) 316 317 318 #endif /* MESA_CONFIG_H_INCLUDED */ 319