src/mesa/main/config.h

   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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 /**
  28  * \file config.h
  29  * Tunable configuration parameters.
  30  */
  31
  32 #ifndef MESA_CONFIG_H_INCLUDED
  33 #define MESA_CONFIG_H_INCLUDED
  34
  35
  36 /**
  37  * \name OpenGL implementation limits
  38  */
  39 /*@{*/
  40
  41 /** Maximum modelview matrix stack depth */
  42 #define MAX_MODELVIEW_STACK_DEPTH 32
  43
  44 /** Maximum projection matrix stack depth */
  45 #define MAX_PROJECTION_STACK_DEPTH 32
  46
  47 /** Maximum texture matrix stack depth */
  48 #define MAX_TEXTURE_STACK_DEPTH 10
  49
  50 /** Maximum attribute stack depth */
  51 #define MAX_ATTRIB_STACK_DEPTH 16
  52
  53 /** Maximum client attribute stack depth */
  54 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  55
  56 /** Maximum recursion depth of display list calls */
  57 #define MAX_LIST_NESTING 64
  58
  59 /** Maximum number of lights */
  60 #define MAX_LIGHTS 8
  61
  62 /**
  63  * Maximum number of user-defined clipping planes supported by any driver in
  64  * Mesa.  This is used to size arrays.
  65  */
  66 #define MAX_CLIP_PLANES 8
  67
  68 /** Maximum pixel map lookup table size */
  69 #define MAX_PIXEL_MAP_TABLE 256
  70
  71 /** Maximum number of auxillary color buffers */
  72 #define MAX_AUX_BUFFERS 1
  73
  74 /** Maximum order (degree) of curves */
  75 #define MAX_EVAL_ORDER 30
  76
  77 /** Maximum Name stack depth */
  78 #define MAX_NAME_STACK_DEPTH 64
  79
  80 /** Minimum point size */
  81 #define MIN_POINT_SIZE 1.0
  82 /** Maximum point size */
  83 #define MAX_POINT_SIZE 60.0
  84 /** Point size granularity */
  85 #define POINT_SIZE_GRANULARITY 0.1
  86
  87 /** Minimum line width */
  88 #define MIN_LINE_WIDTH 1.0
  89 /** Maximum line width */
  90 #define MAX_LINE_WIDTH 10.0
  91 /** Line width granularity */
  92 #define LINE_WIDTH_GRANULARITY 0.1
  93
  94 /** Max memory to allow for a single texture image (in megabytes) */
  95 #define MAX_TEXTURE_MBYTES 1024
  96
  97 /** Number of 1D/2D texture mipmap levels */
  98 #define MAX_TEXTURE_LEVELS 15
  99
 100 /** Number of 3D texture mipmap levels */
 101 #define MAX_3D_TEXTURE_LEVELS 15
 102
 103 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
 104 #define MAX_CUBE_TEXTURE_LEVELS 15
 105
 106 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
 107 #define MAX_TEXTURE_RECT_SIZE 16384
 108
 109 /**
 110  * Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array
 111  */
 112 #define MAX_ARRAY_TEXTURE_LAYERS 64
 113
 114 /**
 115  * Max number of texture coordinate units.  This mainly just applies to
 116  * the fixed-function vertex code.  This will be difficult to raise above
 117  * eight because of various vertex attribute bitvectors.
 118  */
 119 #define MAX_TEXTURE_COORD_UNITS 8
 120
 121 /**
 122  * Max number of texture image units.  Also determines number of texture
 123  * samplers in shaders.
 124  */
 125 #define MAX_TEXTURE_IMAGE_UNITS 16
 126
 127 /**
 128  * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
 129  * This value is only used for dimensioning arrays.
 130  * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
 131  * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
 132  * used almost everywhere else.
 133  */
 134 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
 135
 136
 137 /** Maximum viewport size */
 138 #define MAX_VIEWPORT_WIDTH 16384
 139 #define MAX_VIEWPORT_HEIGHT 16384
 140
 141 /** Maxmimum 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 /*@}*/
 172
 173 /**
 174  * Per-context constants (power of two)
 175  *
 176  * \note
 177  * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS
 178  * and \c MAX_VERTEX_PROGRAM_PARAMS.  Otherwise some applications will make
 179  * incorrect assumptions.
 180  */
 181 #define MAX_PROGRAM_ENV_PARAMS         256
 182
 183 #define MAX_PROGRAM_MATRICES           8
 184 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
 185 #define MAX_PROGRAM_CALL_DEPTH         8
 186 #define MAX_PROGRAM_TEMPS              256
 187 #define MAX_PROGRAM_ADDRESS_REGS       2
 188 #define MAX_VARYING                    32    /**< number of float[4] vectors */
 189 #define MAX_SAMPLERS                   MAX_TEXTURE_IMAGE_UNITS
 190 #define MAX_PROGRAM_INPUTS             32
 191 #define MAX_PROGRAM_OUTPUTS            64
 192 /*@}*/
 193
 194 /** For GL_ARB_vertex_program */
 195 /*@{*/
 196 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
 197 #define MAX_VERTEX_PROGRAM_PARAMS       MAX_UNIFORMS
 198 /*@}*/
 199
 200 /** For GL_ARB_fragment_program */
 201 /*@{*/
 202 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
 203 /*@}*/
 204
 205 /** For GL_NV_fragment_program */
 206 /*@{*/
 207 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
 208 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
 209 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
 210 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
 211 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
 212 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
 213 /*@}*/
 214
 215
 216 /** For GL_ARB_vertex_shader */
 217 /*@{*/
 218 #define MAX_VERTEX_GENERIC_ATTRIBS 16
 219 /* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
 220 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS * 6)
 221 /*@}*/
 222
 223
 224 /** For GL_ARB_draw_buffers */
 225 /*@{*/
 226 #define MAX_DRAW_BUFFERS 8
 227 /*@}*/
 228
 229
 230 /** For GL_EXT_framebuffer_object */
 231 /*@{*/
 232 #define MAX_COLOR_ATTACHMENTS 8
 233 #define MAX_RENDERBUFFER_SIZE 16384
 234 /*@}*/
 235
 236 /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */
 237 #define SUPPORTED_ATI_BUMP_UNITS 0xff
 238
 239 /** For GL_EXT_transform_feedback */
 240 #define MAX_FEEDBACK_BUFFERS 4
 241 #define MAX_FEEDBACK_ATTRIBS 32
 242
 243 /** For GL_ARB_geometry_shader4 */
 244 /*@{*/
 245 #define MAX_GEOMETRY_UNIFORM_COMPONENTS              512
 246 #define MAX_GEOMETRY_OUTPUT_VERTICES                 256
 247 #define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS         1024
 248 /*@}*/
 249
 250 /** For GL_ARB_debug_output */
 251 /*@{*/
 252 #define MAX_DEBUG_LOGGED_MESSAGES   10
 253 #define MAX_DEBUG_MESSAGE_LENGTH    4096
 254 /*@}*/
 255
 256
 257 /*
 258  * Color channel component order
 259  *
 260  * \note Changes will almost certainly cause problems at this time.
 261  */
 262 #define RCOMP 0
 263 #define GCOMP 1
 264 #define BCOMP 2
 265 #define ACOMP 3
 266
 267
 268 /**
 269  * Maximum number of temporary vertices required for clipping.
 270  *
 271  * Used in array_cache and tnl modules.
 272  */
 273 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 274
 275
 276 #endif /* MESA_CONFIG_H_INCLUDED */