config.h revision c893a015d8a50a38cd3f727d99835e7e7e2ccea9 
1/* $Id: config.h,v 1.21 2000/10/28 20:41:13 brianp Exp $ */
2
3/*
4 * Mesa 3-D graphics library
5 * Version:  3.5
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 color matrix stack depth: */
56#define MAX_COLOR_STACK_DEPTH 4
57
58/* Maximum attribute stack depth: */
59#define MAX_ATTRIB_STACK_DEPTH 16
60
61/* Maximum client attribute stack depth: */
62#define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
63
64/* Maximum recursion depth of display list calls: */
65#define MAX_LIST_NESTING 64
66
67/* Maximum number of lights: */
68#define MAX_LIGHTS 8
69
70/* Maximum user-defined clipping planes: */
71#define MAX_CLIP_PLANES 6
72
73/* Maximum pixel map lookup table size: */
74#define MAX_PIXEL_MAP_TABLE 256
75
76/* Number of auxillary color buffers: */
77#define NUM_AUX_BUFFERS 0
78
79/* Maximum order (degree) of curves: */
80#ifdef AMIGA
81#   define MAX_EVAL_ORDER 12
82#else
83#   define MAX_EVAL_ORDER 30
84#endif
85
86/* Maximum Name stack depth */
87#define MAX_NAME_STACK_DEPTH 64
88
89/* Min and Max point sizes and granularity */
90#define MIN_POINT_SIZE 1.0
91#define MAX_POINT_SIZE 10.0
92#define POINT_SIZE_GRANULARITY 0.1
93
94/* Min and Max line widths and granularity */
95#define MIN_LINE_WIDTH 1.0
96#define MAX_LINE_WIDTH 10.0
97#define LINE_WIDTH_GRANULARITY 0.1
98
99/* Max texture palette / color table size */
100#define MAX_COLOR_TABLE_SIZE 256
101
102/* Number of texture levels */
103#define MAX_TEXTURE_LEVELS 12
104
105/* Number of texture units - GL_ARB_multitexture */
106#define MAX_TEXTURE_UNITS 3
107
108/* Maximum viewport/image size: */
109#define MAX_WIDTH 2048
110#define MAX_HEIGHT 1200
111
112/* Maxmimum size for CVA.  May be overridden by the drivers.  */
113#define MAX_ARRAY_LOCK_SIZE 3000
114
115/* Subpixel precision for antialiasing, window coordinate snapping */
116#define SUB_PIXEL_BITS 4
117
118/* Size of histogram tables */
119#define HISTOGRAM_TABLE_SIZE 256
120
121/* Max convolution filter sizes */
122#define MAX_CONVOLUTION_WIDTH 9
123#define MAX_CONVOLUTION_HEIGHT 9
124
125/* GL_ARB_texture_compression */
126#define MAX_COMPRESSED_TEXTURE_FORMATS 25
127
128
129
130/*
131 * Mesa-specific parameters
132 */
133
134
135/*
136 * Bits per accumulation buffer color component:  8 or 16
137 */
138#define ACCUM_BITS 16
139
140
141/*
142 * Bits per depth buffer value.  Any reasonable value up to 31 will
143 * work.  32 doesn't work because of integer overflow problems in the
144 * rasterizer code.
145 */
146#define DEFAULT_SOFTWARE_DEPTH_BITS 16
147#if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
148#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
149#else
150#define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
151#endif
152
153
154
155/*
156 * Bits per stencil value:  8
157 */
158#define STENCIL_BITS 8
159
160
161/*
162 * Bits per color channel (must be 8 at this time!)
163 */
164#define CHAN_BITS 8
165#if CHAN_BITS == 8
166   typedef GLubyte GLchan;
167#define CHAN_MAX 255
168#define CHAN_MAXF 255.0F
169#elif CHAN_BITS == 16
170   typedef GLushort GLchan;
171#define CHAN_MAX 65535
172#define CHAN_MAXF 65535.0F
173#elif CHAN_BITS == 32
174   typedef GLfloat GLchan;
175#define CHAN_MAX 1.0
176#define CHAN_MAXF 1.0F
177#else
178#error  illegal number of color channel bits
179#endif
180
181
182
183
184
185/*
186 * Color channel component order
187 * (changes will almost certainly cause problems at this time)
188 */
189#define RCOMP 0
190#define GCOMP 1
191#define BCOMP 2
192#define ACOMP 3
193
194
195
196/* Vertex buffer size.  KW: no restrictions on the divisibility of
197 * this number, though things may go better for you if you choose a
198 * value of 12n + 3.
199 */
200#define VB_START  3
201
202#define VB_MAX (216 + VB_START)
203
204
205
206/*
207 * Actual vertex buffer size.
208 *
209 * Arrays must also accomodate new vertices from clipping, and
210 * potential overflow from primitives which don't fit into neatly into
211 * VB_MAX vertices.  (This only happens when mixed primitives are
212 * sharing the vb).
213 */
214#define VB_MAX_CLIPPED_VERTS ((2 * (6 + MAX_CLIP_PLANES))+1)
215#define VB_SIZE  (VB_MAX + VB_MAX_CLIPPED_VERTS)
216
217
218typedef struct __GLcontextRec GLcontext;
219
220extern void
221gl_read_config_file(GLcontext *ctx);
222
223extern void
224gl_register_config_var(const char *name, void (*notify)( const char *, int ));
225
226
227#endif
228