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 texture palette / color table size */
  95 #define MAX_COLOR_TABLE_SIZE 256
  96
  97 /** Max memory to allow for a single texture image (in megabytes) */
  98 #define MAX_TEXTURE_MBYTES 1024
  99
 100 /** Number of 1D/2D texture mipmap levels */
 101 #define MAX_TEXTURE_LEVELS 15
 102
 103 /** Number of 3D texture mipmap levels */
 104 #define MAX_3D_TEXTURE_LEVELS 15
 105
 106 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
 107 #define MAX_CUBE_TEXTURE_LEVELS 15
 108
 109 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
 110 #define MAX_TEXTURE_RECT_SIZE 16384
 111
 112 /**
 113  * Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array
 114  */
 115 #define MAX_ARRAY_TEXTURE_LAYERS 64
 116
 117 /**
 118  * Max number of texture coordinate units.  This mainly just applies to
 119  * the fixed-function vertex code.  This will be difficult to raise above
 120  * eight because of various vertex attribute bitvectors.
 121  */
 122 #define MAX_TEXTURE_COORD_UNITS 8
 123
 124 /**
 125  * Max number of texture image units.  Also determines number of texture
 126  * samplers in shaders.
 127  */
 128 #define MAX_TEXTURE_IMAGE_UNITS 16
 129
 130 /**
 131  * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
 132  * This value is only used for dimensioning arrays.
 133  * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
 134  * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
 135  * used almost everywhere else.
 136  */
 137 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
 138
 139
 140 /** Maximum viewport size */
 141 #define MAX_VIEWPORT_WIDTH 16384
 142 #define MAX_VIEWPORT_HEIGHT 16384
 143
 144 /** Maxmimum size for CVA.  May be overridden by the drivers.  */
 145 #define MAX_ARRAY_LOCK_SIZE 3000
 146
 147 /** Subpixel precision for antialiasing, window coordinate snapping */
 148 #define SUB_PIXEL_BITS 4
 149
 150 /** For GL_ARB_texture_compression */
 151 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
 152
 153 /** For GL_EXT_texture_filter_anisotropic */
 154 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
 155
 156 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
 157 #define MAX_TEXTURE_LOD_BIAS 14.0
 158
 159 /** For any program target/extension */
 160 /*@{*/
 161 #define MAX_PROGRAM_INSTRUCTIONS       (16 * 1024)
 162
 163 /**
 164  * Per-program constants (power of two)
 165  *
 166  * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader
 167  * and GLSL shader names for the same thing.  They should \b always have the
 168  * same value.  Each refers to the number of vec4 values supplied as
 169  * per-program parameters.
 170  */
 171 /*@{*/
 172 #define MAX_PROGRAM_LOCAL_PARAMS       4096
 173 #define MAX_UNIFORMS                   4096
 174 /*@}*/
 175
 176 /**
 177  * Per-context constants (power of two)
 178  *
 179  * \note
 180  * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS
 181  * and \c MAX_VERTEX_PROGRAM_PARAMS.  Otherwise some applications will make
 182  * incorrect assumptions.
 183  */
 184 #define MAX_PROGRAM_ENV_PARAMS         256
 185
 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              256
 190 #define MAX_PROGRAM_ADDRESS_REGS       2
 191 #define MAX_VARYING                    32    /**< number of float[4] vectors */
 192 #define MAX_SAMPLERS                   MAX_TEXTURE_IMAGE_UNITS
 193 #define MAX_PROGRAM_INPUTS             32
 194 #define MAX_PROGRAM_OUTPUTS            64
 195 /*@}*/
 196
 197 /** For GL_ARB_vertex_program */
 198 /*@{*/
 199 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
 200 #define MAX_VERTEX_PROGRAM_PARAMS       MAX_UNIFORMS
 201 /*@}*/
 202
 203 /** For GL_ARB_fragment_program */
 204 /*@{*/
 205 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
 206 /*@}*/
 207
 208 /** For GL_NV_fragment_program */
 209 /*@{*/
 210 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
 211 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
 212 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
 213 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
 214 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
 215 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
 216 /*@}*/
 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 GL_ARB_geometry_shader4 */
 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 */
 254 /*@{*/
 255 #define MAX_DEBUG_LOGGED_MESSAGES   10
 256 #define MAX_DEBUG_MESSAGE_LENGTH    4096
 257 /*@}*/
 258
 259
 260 /*
 261  * Color channel component order
 262  *
 263  * \note Changes will almost certainly cause problems at this time.
 264  */
 265 #define RCOMP 0
 266 #define GCOMP 1
 267 #define BCOMP 2
 268 #define ACOMP 3
 269
 270
 271 /**
 272  * Maximum number of temporary vertices required for clipping.
 273  *
 274  * Used in array_cache and tnl modules.
 275  */
 276 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 277
 278
 279 #endif /* MESA_CONFIG_H_INCLUDED */