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/* $Id: config.h,v 1.6 2000/02/21 14:46:28 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.3
*
* Copyright (C) 1999-2000 Brian Paul 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.
*/
/*
* Tunable configuration parameters.
*/
#ifndef CONFIG_H
#define CONFIG_H
#ifdef HAVE_CONFIG_H
#include "conf.h"
#endif
/*
* 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 user-defined clipping planes: */
#define MAX_CLIP_PLANES 6
/* Maximum pixel map lookup table size: */
#define MAX_PIXEL_MAP_TABLE 256
/* Number of auxillary color buffers: */
#define NUM_AUX_BUFFERS 0
/* Maximum order (degree) of curves: */
#ifdef AMIGA
# define MAX_EVAL_ORDER 12
#else
# define MAX_EVAL_ORDER 30
#endif
/* Maximum Name stack depth */
#define MAX_NAME_STACK_DEPTH 64
/* Min and Max point sizes and granularity */
#define MIN_POINT_SIZE 1.0
#define MAX_POINT_SIZE 10.0
#define POINT_SIZE_GRANULARITY 0.1
/* Min and Max line widths and granularity */
#define MIN_LINE_WIDTH 1.0
#define MAX_LINE_WIDTH 10.0
#define LINE_WIDTH_GRANULARITY 0.1
/* Max texture palette size */
#define MAX_TEXTURE_PALETTE_SIZE 256
/* Number of texture levels */
#define MAX_TEXTURE_LEVELS 12
/* Number of texture units - GL_ARB_multitexture */
#define MAX_TEXTURE_UNITS 2
/* Maximum viewport size: */
#define MAX_WIDTH 1600
#define MAX_HEIGHT 1200
/* 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
/*
* Mesa-specific parameters
*/
/*
* Bits per accumulation buffer color component: 8 or 16
*/
#define ACCUM_BITS 16
/*
* Bits per depth buffer value: 16 or 32
*/
#ifdef MESAD3D
/* Mesa / Direct3D driver only */
extern float g_DepthScale, g_MaxDepth;
# define DEPTH_BITS 32
# define DEPTH_SCALE g_DepthScale
# define MAX_DEPTH g_MaxDepth
#else
# define DEPTH_BITS 16
# if DEPTH_BITS==16
# define MAX_DEPTH 0xffff
# define DEPTH_SCALE 65535.0F
# elif DEPTH_BITS==32
# define MAX_DEPTH 0x3fffffff
# define DEPTH_SCALE ((GLfloat) MAX_DEPTH)
# else
# error "illegal number of depth bits"
# endif
#endif
/*
* Bits per stencil value: 8
*/
#define STENCIL_BITS 8
/*
* Bits per color channel (must be 8 at this time!)
*/
#define CHAN_BITS 8
#define CHAN_MAX ((1 << CHAN_BITS) - 1)
#define CHAN_MAXF ((GLfloat) CHAN_MAX)
/*
* Color channel component order
* (changes will almost certainly cause problems at this time)
*/
#define RCOMP 0
#define GCOMP 1
#define BCOMP 2
#define ACOMP 3
/* Vertex buffer size. KW: no restrictions on the divisibility of
* this number, though things may go better for you if you choose a
* value of 12n + 3.
*/
#define VB_START 3
#define VB_MAX (216 + VB_START)
/*
* Actual vertex buffer size.
*
* Arrays must also accomodate new vertices from clipping, and
* potential overflow from primitives which don't fit into neatly into
* VB_MAX vertices. (This only happens when mixed primitives are
* sharing the vb).
*/
#define VB_MAX_CLIPPED_VERTS (2 * (6 + MAX_CLIP_PLANES))
#define VB_SIZE (VB_MAX + VB_MAX_CLIPPED_VERTS)
typedef struct gl_context GLcontext;
extern void
gl_read_config_file( struct gl_context *ctx );
extern void
gl_register_config_var(const char *name, void (*notify)( const char *, int ));
#endif
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