src/mesa/main/config.h

   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
 136 /** Maximum viewport size */
 137 #define MAX_VIEWPORT_WIDTH 16384
 138 #define MAX_VIEWPORT_HEIGHT 16384
 139
 140 /** Maximun number of viewports supported with ARB_viewport_array */
 141 #define MAX_VIEWPORTS 16
 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 #define MAX_UNIFORM_BUFFERS            15 /* + 1 default uniform buffer */
 174 #define MAX_SHADER_STORAGE_BUFFERS     7  /* + 1 default shader storage buffer */
 175 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
 176 #define MAX_COMBINED_UNIFORM_BUFFERS   (MAX_UNIFORM_BUFFERS * 6)
 177 #define MAX_COMBINED_SHADER_STORAGE_BUFFERS   (MAX_SHADER_STORAGE_BUFFERS * 6)
 178 #define MAX_ATOMIC_COUNTERS            4096
 179 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
 180 #define MAX_COMBINED_ATOMIC_BUFFERS    (MAX_UNIFORM_BUFFERS * 6)
 181 /* Size of an atomic counter in bytes according to ARB_shader_atomic_counters */
 182 #define ATOMIC_COUNTER_SIZE            4
 183 #define MAX_IMAGE_UNIFORMS             32
 184 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
 185 #define MAX_IMAGE_UNITS                (MAX_IMAGE_UNIFORMS * 6)
 186 /*@}*/
 187
 188 /**
 189  * Per-context constants (power of two)
 190  *
 191  * \note
 192  * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS
 193  * and \c MAX_VERTEX_PROGRAM_PARAMS.  Otherwise some applications will make
 194  * incorrect assumptions.
 195  */
 196 #define MAX_PROGRAM_ENV_PARAMS         256
 197
 198 #define MAX_PROGRAM_MATRICES           8
 199 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
 200 #define MAX_PROGRAM_CALL_DEPTH         8
 201 #define MAX_PROGRAM_TEMPS              256
 202 #define MAX_PROGRAM_ADDRESS_REGS       1
 203 #define MAX_VARYING                    32    /**< number of float[4] vectors */
 204 #define MAX_SAMPLERS                   MAX_TEXTURE_IMAGE_UNITS
 205 #define MAX_PROGRAM_INPUTS             32
 206 #define MAX_PROGRAM_OUTPUTS            64
 207 /*@}*/
 208
 209 /** For GL_ARB_vertex_program */
 210 /*@{*/
 211 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
 212 #define MAX_VERTEX_PROGRAM_PARAMS       MAX_UNIFORMS
 213 /*@}*/
 214
 215 /** For GL_ARB_fragment_program */
 216 /*@{*/
 217 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
 218 #define MAX_FRAGMENT_PROGRAM_PARAMS       64
 219 #define MAX_FRAGMENT_PROGRAM_INPUTS       12
 220 /*@}*/
 221
 222 /** For GL_ARB_vertex_shader */
 223 /*@{*/
 224 #define MAX_VERTEX_GENERIC_ATTRIBS 16
 225 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
 226 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS * 6)
 227 /*@}*/
 228
 229
 230 /** For GL_ARB_draw_buffers */
 231 /*@{*/
 232 #define MAX_DRAW_BUFFERS 8
 233 /*@}*/
 234
 235
 236 /** For GL_EXT_framebuffer_object */
 237 /*@{*/
 238 #define MAX_COLOR_ATTACHMENTS 8
 239 #define MAX_RENDERBUFFER_SIZE 16384
 240 /*@}*/
 241
 242 /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */
 243 #define SUPPORTED_ATI_BUMP_UNITS 0xff
 244
 245 /** For GL_EXT_transform_feedback */
 246 #define MAX_FEEDBACK_BUFFERS 4
 247 #define MAX_FEEDBACK_ATTRIBS 32
 248
 249 /** For GL_ARB_geometry_shader4 */
 250 /*@{*/
 251 #define MAX_GEOMETRY_UNIFORM_COMPONENTS              512
 252 #define MAX_GEOMETRY_OUTPUT_VERTICES                 256
 253 #define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS         1024
 254 /*@}*/
 255
 256 /** For GL_ARB_debug_output and GL_KHR_debug */
 257 /*@{*/
 258 #define MAX_DEBUG_LOGGED_MESSAGES   10
 259 #define MAX_DEBUG_MESSAGE_LENGTH    4096
 260 /*@}*/
 261
 262 /** For GL_KHR_debug */
 263 /*@{*/
 264 #define MAX_LABEL_LENGTH 256
 265 #define MAX_DEBUG_GROUP_STACK_DEPTH 64
 266 /*@}*/
 267
 268 /** For GL_ARB_gpu_shader5 */
 269 /*@{*/
 270 #define MAX_GEOMETRY_SHADER_INVOCATIONS     32
 271 #define MIN_FRAGMENT_INTERPOLATION_OFFSET   -0.5
 272 #define MAX_FRAGMENT_INTERPOLATION_OFFSET   0.5
 273 #define FRAGMENT_INTERPOLATION_OFFSET_BITS  4
 274 #define MAX_VERTEX_STREAMS                  4
 275 /*@}*/
 276
 277 /** For GL_INTEL_performance_query */
 278 /*@{*/
 279 #define MAX_PERFQUERY_QUERY_NAME_LENGTH     256
 280 #define MAX_PERFQUERY_COUNTER_NAME_LENGTH   256
 281 #define MAX_PERFQUERY_COUNTER_DESC_LENGTH   1024
 282 #define PERFQUERY_HAVE_GPA_EXTENDED_COUNTERS 0
 283 /*@}*/
 284
 285 /** For GL_ARB_compute_shader */
 286 /*@{*/
 287 #define MAX_COMPUTE_UNIFORM_BLOCKS          12
 288 #define MAX_COMPUTE_TEXTURE_IMAGE_UNITS     16
 289 #define MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS  8
 290 #define MAX_COMPUTE_ATOMIC_COUNTERS         8
 291 #define MAX_COMPUTE_SHARED_MEMORY_SIZE      32768
 292 #define MAX_COMPUTE_UNIFORM_COMPONENTS      512
 293 #define MAX_COMPUTE_IMAGE_UNIFORMS          8
 294 /*@}*/
 295
 296 /** For GL_ARB_pipeline_statistics_query */
 297 #define MAX_PIPELINE_STATISTICS             11
 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 */