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  * 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 /**
  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 color matrix stack depth */
  50 #define MAX_COLOR_STACK_DEPTH 4
  51
  52 /** Maximum attribute stack depth */
  53 #define MAX_ATTRIB_STACK_DEPTH 16
  54
  55 /** Maximum client attribute stack depth */
  56 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  57
  58 /** Maximum recursion depth of display list calls */
  59 #define MAX_LIST_NESTING 64
  60
  61 /** Maximum number of lights */
  62 #define MAX_LIGHTS 8
  63
  64 /** Maximum user-defined clipping planes */
  65 #define MAX_CLIP_PLANES 6
  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 #ifdef AMIGA
  75 #   define MAX_EVAL_ORDER 12
  76 #else
  77 #   define MAX_EVAL_ORDER 30
  78 #endif
  79
  80 /** Maximum Name stack depth */
  81 #define MAX_NAME_STACK_DEPTH 64
  82
  83 /** Minimum point size */
  84 #define MIN_POINT_SIZE 1.0
  85 /** Maximum point size */
  86 #define MAX_POINT_SIZE 60.0
  87 /** Point size granularity */
  88 #define POINT_SIZE_GRANULARITY 0.1
  89
  90 /** Minimum line width */
  91 #define MIN_LINE_WIDTH 1.0
  92 /** Maximum line width */
  93 #define MAX_LINE_WIDTH 10.0
  94 /** Line width granularity */
  95 #define LINE_WIDTH_GRANULARITY 0.1
  96
  97 /** Max texture palette / color table size */
  98 #define MAX_COLOR_TABLE_SIZE 256
  99
 100 /** Number of 1D/2D texture mipmap levels */
 101 #define MAX_TEXTURE_LEVELS 13
 102
 103 /** Number of 3D texture mipmap levels */
 104 #define MAX_3D_TEXTURE_LEVELS 9
 105
 106 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
 107 #define MAX_CUBE_TEXTURE_LEVELS 13
 108
 109 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
 110 #define MAX_TEXTURE_RECT_SIZE 4096
 111
 112 /** Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array */
 113 #define MAX_ARRAY_TEXTURE_LAYERS 64
 114
 115 /**
 116  * Max number of texture coordinate units.  This mainly just applies to
 117  * the fixed-function vertex code.  This will be difficult to raise above
 118  * eight because of various vertex attribute bitvectors.
 119  */
 120 #define MAX_TEXTURE_COORD_UNITS 8
 121
 122 /**
 123  * Max number of texture image units.  Also determines number of texture
 124  * samplers in shaders.
 125  */
 126 #define MAX_TEXTURE_IMAGE_UNITS 16
 127
 128 /**
 129  * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
 130  * This value is only used for dimensioning arrays.
 131  * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
 132  * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
 133  * used almost everywhere else.
 134  */
 135 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
 136
 137
 138 /**
 139  * Maximum viewport/image width. Must accomodate all texture sizes too.
 140  */
 141 #define MAX_WIDTH 4096
 142 /** Maximum viewport/image height */
 143 #define MAX_HEIGHT 4096
 144
 145 /** Maxmimum size for CVA.  May be overridden by the drivers.  */
 146 #define MAX_ARRAY_LOCK_SIZE 3000
 147
 148 /** Subpixel precision for antialiasing, window coordinate snapping */
 149 #define SUB_PIXEL_BITS 4
 150
 151 /** Size of histogram tables */
 152 #define HISTOGRAM_TABLE_SIZE 256
 153
 154 /** Max convolution filter width */
 155 #define MAX_CONVOLUTION_WIDTH 9
 156 /** Max convolution filter height */
 157 #define MAX_CONVOLUTION_HEIGHT 9
 158
 159 /** For GL_ARB_texture_compression */
 160 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
 161
 162 /** For GL_EXT_texture_filter_anisotropic */
 163 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
 164
 165 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
 166 #define MAX_TEXTURE_LOD_BIAS 12.0
 167
 168 /** For GL_ARB_vertex_program */
 169 /*@{*/
 170 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
 171 /*@}*/
 172
 173 /** For GL_ARB_fragment_program */
 174 /*@{*/
 175 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
 176 /*@}*/
 177
 178 /** For any program target/extension */
 179 /*@{*/
 180 #define MAX_PROGRAM_INSTRUCTIONS  (16 * 1024)
 181 #define MAX_PROGRAM_LOCAL_PARAMS 256 /**< per-program constants (power of two) */
 182 #define MAX_PROGRAM_ENV_PARAMS 256   /**< per-context constants (power of two) */
 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_UNIFORMS 1024  /**< number of vec4 uniforms */
 189 #define MAX_VARYING 16     /**< number of float[4] vectors */
 190 #define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS
 191 #define MAX_PROGRAM_INPUTS 32
 192 #define MAX_PROGRAM_OUTPUTS 32
 193 /*@}*/
 194
 195 /** For GL_NV_vertex_program */
 196 /*@{*/
 197 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
 198 #define MAX_NV_VERTEX_PROGRAM_TEMPS         12
 199 #define MAX_NV_VERTEX_PROGRAM_PARAMS        96
 200 #define MAX_NV_VERTEX_PROGRAM_INPUTS        16
 201 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
 202 /*@}*/
 203
 204 /** For GL_NV_fragment_program */
 205 /*@{*/
 206 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
 207 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
 208 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
 209 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
 210 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
 211 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
 212 /*@}*/
 213
 214
 215 /** For GL_ARB_vertex_shader */
 216 /*@{*/
 217 #define MAX_VERTEX_GENERIC_ATTRIBS 16
 218 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
 219 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
 220 /*@}*/
 221
 222
 223 /** For GL_ARB_draw_buffers */
 224 /*@{*/
 225 #define MAX_DRAW_BUFFERS 4
 226 /*@}*/
 227
 228
 229 /** For GL_EXT_framebuffer_object */
 230 /*@{*/
 231 #define MAX_COLOR_ATTACHMENTS 8
 232 /*@}*/
 233
 234 /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */
 235 #define SUPPORTED_ATI_BUMP_UNITS 0xff
 236
 237 /**
 238  * \name Mesa-specific parameters
 239  */
 240 /*@{*/
 241
 242
 243 /**
 244  * If non-zero use GLdouble for walking triangle edges, for better accuracy.
 245  */
 246 #define TRIANGLE_WALK_DOUBLE 0
 247
 248
 249 /**
 250  * Bits per depth buffer value (max is 32).
 251  */
 252 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS
 253 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
 254 #endif
 255 /** Depth buffer data type */
 256 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
 257 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
 258 #else
 259 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
 260 #endif
 261
 262
 263 /**
 264  * Bits per stencil value: 8
 265  */
 266 #define STENCIL_BITS 8
 267
 268
 269 /**
 270  * Bits per color channel:  8, 16 or 32
 271  */
 272 #ifndef CHAN_BITS
 273 #define CHAN_BITS 8
 274 #endif
 275
 276
 277 /*
 278  * Color channel component order
 279  *
 280  * \note Changes will almost certainly cause problems at this time.
 281  */
 282 #define RCOMP 0
 283 #define GCOMP 1
 284 #define BCOMP 2
 285 #define ACOMP 3
 286
 287
 288 /**
 289  * Maximum number of temporary vertices required for clipping.
 290  *
 291  * Used in array_cache and tnl modules.
 292  */
 293 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 294
 295
 296 #endif /* MESA_CONFIG_H_INCLUDED */