src/mesa/main/config.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.3
   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 #include "main/mfeatures.h"
  36
  37
  38 /**
  39  * \name OpenGL implementation limits
  40  */
  41 /*@{*/
  42
  43 /** Maximum modelview matrix stack depth */
  44 #define MAX_MODELVIEW_STACK_DEPTH 32
  45
  46 /** Maximum projection matrix stack depth */
  47 #define MAX_PROJECTION_STACK_DEPTH 32
  48
  49 /** Maximum texture matrix stack depth */
  50 #define MAX_TEXTURE_STACK_DEPTH 10
  51
  52 /** Maximum color matrix stack depth */
  53 #define MAX_COLOR_STACK_DEPTH 4
  54
  55 /** Maximum attribute stack depth */
  56 #define MAX_ATTRIB_STACK_DEPTH 16
  57
  58 /** Maximum client attribute stack depth */
  59 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  60
  61 /** Maximum recursion depth of display list calls */
  62 #define MAX_LIST_NESTING 64
  63
  64 /** Maximum number of lights */
  65 #define MAX_LIGHTS 8
  66
  67 /** Maximum user-defined clipping planes */
  68 #define MAX_CLIP_PLANES 6
  69
  70 /** Maximum pixel map lookup table size */
  71 #define MAX_PIXEL_MAP_TABLE 256
  72
  73 /** Maximum number of auxillary color buffers */
  74 #define MAX_AUX_BUFFERS 4
  75
  76 /** Maximum order (degree) of curves */
  77 #ifdef AMIGA
  78 #   define MAX_EVAL_ORDER 12
  79 #else
  80 #   define MAX_EVAL_ORDER 30
  81 #endif
  82
  83 /** Maximum Name stack depth */
  84 #define MAX_NAME_STACK_DEPTH 64
  85
  86 /** Minimum point size */
  87 #define MIN_POINT_SIZE 1.0
  88 /** Maximum point size */
  89 #define MAX_POINT_SIZE 60.0
  90 /** Point size granularity */
  91 #define POINT_SIZE_GRANULARITY 0.1
  92
  93 /** Minimum line width */
  94 #define MIN_LINE_WIDTH 1.0
  95 /** Maximum line width */
  96 #define MAX_LINE_WIDTH 10.0
  97 /** Line width granularity */
  98 #define LINE_WIDTH_GRANULARITY 0.1
  99
 100 /** Max texture palette / color table size */
 101 #define MAX_COLOR_TABLE_SIZE 256
 102
 103 /** Number of 1D/2D texture mipmap levels */
 104 #define MAX_TEXTURE_LEVELS 12
 105
 106 /** Number of 3D texture mipmap levels */
 107 #define MAX_3D_TEXTURE_LEVELS 9
 108
 109 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
 110 #define MAX_CUBE_TEXTURE_LEVELS 12
 111
 112 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
 113 #define MAX_TEXTURE_RECT_SIZE 2048
 114
 115 /** Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array */
 116 #define MAX_ARRAY_TEXTURE_LAYERS 64
 117
 118 /**
 119  * Max number of texture coordinate units.  This mainly just applies to
 120  * the fixed-function vertex code.  This will be difficult to raise above
 121  * eight because of various vertex attribute bitvectors.
 122  */
 123 #define MAX_TEXTURE_COORD_UNITS 8
 124
 125 /**
 126  * Max number of texture image units.  Also determines number of texture
 127  * samplers in shaders.
 128  */
 129 #define MAX_TEXTURE_IMAGE_UNITS 16
 130
 131 /**
 132  * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
 133  * This value is only used for dimensioning arrays.
 134  * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
 135  * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
 136  * used almost everywhere else.
 137  */
 138 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
 139
 140
 141 /**
 142  * Maximum viewport/image width. Must accomodate all texture sizes too.
 143  */
 144 #define MAX_WIDTH 4096
 145 /** Maximum viewport/image height */
 146 #define MAX_HEIGHT 4096
 147
 148 /** Maxmimum size for CVA.  May be overridden by the drivers.  */
 149 #define MAX_ARRAY_LOCK_SIZE 3000
 150
 151 /** Subpixel precision for antialiasing, window coordinate snapping */
 152 #define SUB_PIXEL_BITS 4
 153
 154 /** Size of histogram tables */
 155 #define HISTOGRAM_TABLE_SIZE 256
 156
 157 /** Max convolution filter width */
 158 #define MAX_CONVOLUTION_WIDTH 9
 159 /** Max convolution filter height */
 160 #define MAX_CONVOLUTION_HEIGHT 9
 161
 162 /** For GL_ARB_texture_compression */
 163 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
 164
 165 /** For GL_EXT_texture_filter_anisotropic */
 166 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
 167
 168 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
 169 #define MAX_TEXTURE_LOD_BIAS 11.0
 170
 171 /** For GL_ARB_vertex_program */
 172 /*@{*/
 173 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
 174 #define MAX_VERTEX_PROGRAM_ATTRIBS     16
 175 /*@}*/
 176
 177 /** For GL_ARB_fragment_program */
 178 /*@{*/
 179 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
 180 /*@}*/
 181
 182 /** For any program target/extension */
 183 /*@{*/
 184 #define MAX_PROGRAM_INSTRUCTIONS  (16 * 1024)
 185 #define MAX_PROGRAM_LOCAL_PARAMS 256 /**< per-program constants (power of two) */
 186 #define MAX_PROGRAM_ENV_PARAMS 128
 187 #define MAX_PROGRAM_MATRICES 8
 188 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
 189 #define MAX_PROGRAM_CALL_DEPTH 8
 190 #define MAX_PROGRAM_TEMPS 128
 191 #define MAX_PROGRAM_ADDRESS_REGS 2
 192 #define MAX_UNIFORMS 256   /**< number of vec4 uniforms */
 193 #define MAX_VARYING 8      /**< number of float[4] vectors */
 194 #define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS
 195 #define MAX_PROGRAM_INPUTS 32
 196 #define MAX_PROGRAM_OUTPUTS 32
 197 /*@}*/
 198
 199 /** For GL_NV_vertex_program */
 200 /*@{*/
 201 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
 202 #define MAX_NV_VERTEX_PROGRAM_TEMPS         12
 203 #define MAX_NV_VERTEX_PROGRAM_PARAMS        MAX_PROGRAM_ENV_PARAMS
 204 #define MAX_NV_VERTEX_PROGRAM_INPUTS        16
 205 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
 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_ATTRIBS 16
 222 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
 223 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
 224 /*@}*/
 225
 226
 227 /** For GL_ARB_draw_buffers */
 228 /*@{*/
 229 #define MAX_DRAW_BUFFERS 4
 230 /*@}*/
 231
 232
 233 /** For GL_EXT_framebuffer_object */
 234 /*@{*/
 235 #define MAX_COLOR_ATTACHMENTS 8
 236 /*@}*/
 237
 238
 239
 240 /**
 241  * \name Mesa-specific parameters
 242  */
 243 /*@{*/
 244
 245
 246 /**
 247  * If non-zero use GLdouble for walking triangle edges, for better accuracy.
 248  */
 249 #define TRIANGLE_WALK_DOUBLE 0
 250
 251
 252 /**
 253  * Bits per depth buffer value (max is 32).
 254  */
 255 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS
 256 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
 257 #endif
 258 /** Depth buffer data type */
 259 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
 260 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
 261 #else
 262 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
 263 #endif
 264
 265
 266 /**
 267  * Bits per stencil value: 8
 268  */
 269 #define STENCIL_BITS 8
 270
 271
 272 /**
 273  * Bits per color channel:  8, 16 or 32
 274  */
 275 #ifndef CHAN_BITS
 276 #define CHAN_BITS 8
 277 #endif
 278
 279
 280 /*
 281  * Color channel component order
 282  *
 283  * \note Changes will almost certainly cause problems at this time.
 284  */
 285 #define RCOMP 0
 286 #define GCOMP 1
 287 #define BCOMP 2
 288 #define ACOMP 3
 289
 290
 291 /**
 292  * Maximum number of temporary vertices required for clipping.
 293  *
 294  * Used in array_cache and tnl modules.
 295  */
 296 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 297
 298
 299 #endif /* MESA_CONFIG_H_INCLUDED */