config.h revision 0771d159d59a856135e375ba89f6af2a057d4f5b 
1/* $Id: config.h,v 1.9 2000/04/07 00:19:41 brianp Exp $ */
2
3/*
4 * Mesa 3-D graphics library
5 * Version:  3.3
6 *
7 * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27
28/*
29 * Tunable configuration parameters.
30 */
31
32
33
34#ifndef CONFIG_H
35#define CONFIG_H
36
37#ifdef HAVE_CONFIG_H
38#include "conf.h"
39#endif
40
41
42/*
43 * OpenGL implementation limits
44 */
45
46/* Maximum modelview matrix stack depth: */
47#define MAX_MODELVIEW_STACK_DEPTH 32
48
49/* Maximum projection matrix stack depth: */
50#define MAX_PROJECTION_STACK_DEPTH 32
51
52/* Maximum texture matrix stack depth: */
53#define MAX_TEXTURE_STACK_DEPTH 10
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/* Number of auxillary color buffers: */
74#define NUM_AUX_BUFFERS 0
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/* Min and Max point sizes and granularity */
87#define MIN_POINT_SIZE 1.0
88#define MAX_POINT_SIZE 10.0
89#define POINT_SIZE_GRANULARITY 0.1
90
91/* Min and Max line widths and granularity */
92#define MIN_LINE_WIDTH 1.0
93#define MAX_LINE_WIDTH 10.0
94#define LINE_WIDTH_GRANULARITY 0.1
95
96/* Max texture palette size */
97#define MAX_TEXTURE_PALETTE_SIZE 256
98
99/* Number of texture levels */
100#define MAX_TEXTURE_LEVELS 12
101
102/* Number of texture units - GL_ARB_multitexture */
103#define MAX_TEXTURE_UNITS 2
104
105/* Maximum viewport size: */
106#define MAX_WIDTH 1600
107#define MAX_HEIGHT 1200
108
109/* Maxmimum size for CVA.  May be overridden by the drivers.  */
110#define MAX_ARRAY_LOCK_SIZE 3000
111
112/* Subpixel precision for antialiasing, window coordinate snapping */
113#define SUB_PIXEL_BITS 4
114
115/* Size of histogram tables */
116#define HISTOGRAM_TABLE_SIZE 256
117
118
119
120/*
121 * Mesa-specific parameters
122 */
123
124
125/*
126 * Bits per accumulation buffer color component:  8 or 16
127 */
128#define ACCUM_BITS 16
129
130
131/*
132 * Bits per depth buffer value:  16 or 32 (GLushort or GLuint)
133 * gl_create_visual() can select any depth in [0, 32].
134 */
135#define DEFAULT_SOFTWARE_DEPTH_BITS 16
136#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
137
138
139
140/*
141 * Bits per stencil value:  8
142 */
143#define STENCIL_BITS 8
144
145
146/*
147 * Bits per color channel (must be 8 at this time!)
148 */
149#define CHAN_BITS 8
150#define CHAN_MAX ((1 << CHAN_BITS) - 1)
151#define CHAN_MAXF ((GLfloat) CHAN_MAX)
152
153
154/*
155 * Color channel component order
156 * (changes will almost certainly cause problems at this time)
157 */
158#define RCOMP 0
159#define GCOMP 1
160#define BCOMP 2
161#define ACOMP 3
162
163
164
165/* Vertex buffer size.  KW: no restrictions on the divisibility of
166 * this number, though things may go better for you if you choose a
167 * value of 12n + 3.
168 */
169#define VB_START  3
170
171#define VB_MAX (216 + VB_START)
172
173
174
175/*
176 * Actual vertex buffer size.
177 *
178 * Arrays must also accomodate new vertices from clipping, and
179 * potential overflow from primitives which don't fit into neatly into
180 * VB_MAX vertices.  (This only happens when mixed primitives are
181 * sharing the vb).
182 */
183#define VB_MAX_CLIPPED_VERTS ((2 * (6 + MAX_CLIP_PLANES))+1)
184#define VB_SIZE  (VB_MAX + VB_MAX_CLIPPED_VERTS)
185
186
187
188typedef struct gl_context GLcontext;
189
190extern void
191gl_read_config_file( struct gl_context *ctx );
192
193extern void
194gl_register_config_var(const char *name, void (*notify)( const char *, int ));
195
196#endif
197