text: /*
   * Mesa 3-D graphics library
   * Version:  7.5
   *
   * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
   * Copyright (C) 2008  VMware, Inc.  All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
   * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  /**
   * \file config.h
   * Tunable configuration parameters.
   */
  
  #ifndef MESA_CONFIG_H_INCLUDED
  #define MESA_CONFIG_H_INCLUDED
  
  
  /**
   * \name OpenGL implementation limits
   */
  /*@{*/
  
  /** Maximum modelview matrix stack depth */
  #define MAX_MODELVIEW_STACK_DEPTH 32
  
  /** Maximum projection matrix stack depth */
  #define MAX_PROJECTION_STACK_DEPTH 32
  
  /** Maximum texture matrix stack depth */
  #define MAX_TEXTURE_STACK_DEPTH 10
  
  /** Maximum attribute stack depth */
  #define MAX_ATTRIB_STACK_DEPTH 16
  
  /** Maximum client attribute stack depth */
  #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
  
  /** Maximum recursion depth of display list calls */
  #define MAX_LIST_NESTING 64
  
  /** Maximum number of lights */
  #define MAX_LIGHTS 8
  
  /**
   * Maximum number of user-defined clipping planes supported by any driver in
   * Mesa.  This is used to size arrays.
   */
  #define MAX_CLIP_PLANES 8
  
  /** Maximum pixel map lookup table size */
  #define MAX_PIXEL_MAP_TABLE 256
  
  /** Maximum number of auxillary color buffers */
  #define MAX_AUX_BUFFERS 1
  
  /** Maximum order (degree) of curves */
  #define MAX_EVAL_ORDER 30
  
  /** Maximum Name stack depth */
  #define MAX_NAME_STACK_DEPTH 64
  
  /** Minimum point size */
  #define MIN_POINT_SIZE 1.0
  /** Maximum point size */
  #define MAX_POINT_SIZE 60.0
  /** Point size granularity */
  #define POINT_SIZE_GRANULARITY 0.1
  
  /** Minimum line width */
  #define MIN_LINE_WIDTH 1.0
  /** Maximum line width */
  #define MAX_LINE_WIDTH 10.0
  /** Line width granularity */
  #define LINE_WIDTH_GRANULARITY 0.1
  
  /** Max texture palette / color table size */
  #define MAX_COLOR_TABLE_SIZE 256
  
  /** Max memory to allow for a single texture image (in megabytes) */
  #define MAX_TEXTURE_MBYTES 1024
  
  /** Number of 1D/2D texture mipmap levels */
  #define MAX_TEXTURE_LEVELS 15
  
  /** Number of 3D texture mipmap levels */
  #define MAX_3D_TEXTURE_LEVELS 15
  
  /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
  #define MAX_CUBE_TEXTURE_LEVELS 15
  
  /** Maximum rectangular texture size - GL_NV_texture_rectangle */
  #define MAX_TEXTURE_RECT_SIZE 16384
  
  /**
   * Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array
   */
  #define MAX_ARRAY_TEXTURE_LAYERS 64
  
  /**
   * Max number of texture coordinate units.  This mainly just applies to
   * the fixed-function vertex code.  This will be difficult to raise above
   * eight because of various vertex attribute bitvectors.
   */
  #define MAX_TEXTURE_COORD_UNITS 8
  
  /**
   * Max number of texture image units.  Also determines number of texture
   * samplers in shaders.
   */
  #define MAX_TEXTURE_IMAGE_UNITS 16
  
  /**
   * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
   * This value is only used for dimensioning arrays.
   * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
   * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
   * used almost everywhere else.
   */
  #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
  
  
  /** Maximum viewport size */
  #define MAX_VIEWPORT_WIDTH 16384
  #define MAX_VIEWPORT_HEIGHT 16384
  
  /** Maxmimum size for CVA.  May be overridden by the drivers.  */
  #define MAX_ARRAY_LOCK_SIZE 3000
  
  /** Subpixel precision for antialiasing, window coordinate snapping */
  #define SUB_PIXEL_BITS 4
  
  /** For GL_ARB_texture_compression */
  #define MAX_COMPRESSED_TEXTURE_FORMATS 25
  
  /** For GL_EXT_texture_filter_anisotropic */
  #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
  
  /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
  #define MAX_TEXTURE_LOD_BIAS 14.0
  
  /** For any program target/extension */
  /*@{*/
  #define MAX_PROGRAM_INSTRUCTIONS       (16 * 1024)
  
  /**
   * Per-program constants (power of two)
   *
   * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader
   * and GLSL shader names for the same thing.  They should \b always have the
   * same value.  Each refers to the number of vec4 values supplied as
   * per-program parameters.
   */
  /*@{*/
  #define MAX_PROGRAM_LOCAL_PARAMS       4096
  #define MAX_UNIFORMS                   4096
  /*@}*/
  
  /**
   * Per-context constants (power of two)
   *
   * \note
   * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS
   * and \c MAX_VERTEX_PROGRAM_PARAMS.  Otherwise some applications will make
   * incorrect assumptions.
   */
  #define MAX_PROGRAM_ENV_PARAMS         256
  
  #define MAX_PROGRAM_MATRICES           8
  #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
  #define MAX_PROGRAM_CALL_DEPTH         8
  #define MAX_PROGRAM_TEMPS              256
  #define MAX_PROGRAM_ADDRESS_REGS       2
  #define MAX_VARYING                    32    /**< number of float[4] vectors */
  #define MAX_SAMPLERS                   MAX_TEXTURE_IMAGE_UNITS
  #define MAX_PROGRAM_INPUTS             32
  #define MAX_PROGRAM_OUTPUTS            64
  /*@}*/
  
  /** For GL_ARB_vertex_program */
  /*@{*/
  #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
  #define MAX_VERTEX_PROGRAM_PARAMS       MAX_UNIFORMS
  /*@}*/
  
  /** For GL_ARB_fragment_program */
  /*@{*/
  #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
  /*@}*/
  
  /** For GL_NV_vertex_program */
  /*@{*/
  #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
  #define MAX_NV_VERTEX_PROGRAM_TEMPS         12
  #define MAX_NV_VERTEX_PROGRAM_PARAMS        96
  #define MAX_NV_VERTEX_PROGRAM_INPUTS        16
  #define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
  /*@}*/
  
  /** For GL_NV_fragment_program */
  /*@{*/
  #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
  #define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
  #define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
  #define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
  #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
  #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
  /*@}*/
  
  
  /** For GL_ARB_vertex_shader */
  /*@{*/
  #define MAX_VERTEX_GENERIC_ATTRIBS 16
  #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
  #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_VERTEX_TEXTURE_IMAGE_UNITS + \
  					  MAX_TEXTURE_IMAGE_UNITS)
  /*@}*/
  
  
  /** For GL_ARB_draw_buffers */
  /*@{*/
  #define MAX_DRAW_BUFFERS 8
  /*@}*/
  
  
  /** For GL_EXT_framebuffer_object */
  /*@{*/
  #define MAX_COLOR_ATTACHMENTS 8
  #define MAX_RENDERBUFFER_SIZE 16384
  /*@}*/
  
  /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */
  #define SUPPORTED_ATI_BUMP_UNITS 0xff
  
  /** For GL_EXT_transform_feedback */
  #define MAX_FEEDBACK_BUFFERS 4
  #define MAX_FEEDBACK_ATTRIBS 32
  
  /** For GL_ARB_geometry_shader4 */
  /*@{*/
  #define MAX_GEOMETRY_TEXTURE_IMAGE_UNITS             8
  #define MAX_GEOMETRY_VARYING_COMPONENTS              32
  #define MAX_VERTEX_VARYING_COMPONENTS                32
  #define MAX_GEOMETRY_UNIFORM_COMPONENTS              512
  #define MAX_GEOMETRY_OUTPUT_VERTICES                 256
  #define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS         1024
  /*@}*/
  
  /** For GL_ARB_debug_output */
  /*@{*/
  #define MAX_DEBUG_LOGGED_MESSAGES   10
  #define MAX_DEBUG_MESSAGE_LENGTH    4096
  /*@}*/
  
  
  /*
   * Color channel component order
   * 
   * \note Changes will almost certainly cause problems at this time.
   */
  #define RCOMP 0
  #define GCOMP 1
  #define BCOMP 2
  #define ACOMP 3
  
  
  /**
   * Maximum number of temporary vertices required for clipping.  
   *
   * Used in array_cache and tnl modules.
   */
  #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
  
  
  #endif /* MESA_CONFIG_H_INCLUDED */
  