config.h revision 65cd4d80c4093e44e6a340b41e7bae3489b7ea4a 
1/* $Id: config.h,v 1.5 2000/02/03 19:40:35 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
116
117/*
118 * Mesa-specific parameters
119 */
120
121
122/*
123 * Bits per accumulation buffer color component:  8 or 16
124 */
125#define ACCUM_BITS 16
126
127
128/*
129 * Bits per depth buffer value:  16 or 32
130 */
131#ifdef MESAD3D
132   /* Mesa / Direct3D driver only */
133   extern float g_DepthScale, g_MaxDepth;
134#  define DEPTH_BITS 	32
135#  define DEPTH_SCALE 	g_DepthScale
136#  define MAX_DEPTH 	g_MaxDepth
137#else
138#  define DEPTH_BITS 16
139#  if DEPTH_BITS==16
140#     define MAX_DEPTH 0xffff
141#     define DEPTH_SCALE 65535.0F
142#  elif DEPTH_BITS==32
143#     define MAX_DEPTH 0x3fffffff
144#     define DEPTH_SCALE ((GLfloat) MAX_DEPTH)
145#  else
146#     error "illegal number of depth bits"
147#  endif
148#endif
149
150
151/*
152 * Bits per stencil value:  8
153 */
154#define STENCIL_BITS 8
155
156
157/*
158 * Bits per color channel (must be 8 at this time!)
159 */
160#define CHAN_BITS 8
161
162
163
164/*
165 * Color channel component order
166 * (changes will almost certainly cause problems at this time)
167 */
168#define RCOMP 0
169#define GCOMP 1
170#define BCOMP 2
171#define ACOMP 3
172
173
174
175/* Vertex buffer size.  KW: no restrictions on the divisibility of
176 * this number, though things may go better for you if you choose a
177 * value of 12n + 3.
178 */
179#define VB_START  3
180
181#define VB_MAX (216 + VB_START)
182
183
184
185/*
186 * Actual vertex buffer size.
187 *
188 * Arrays must also accomodate new vertices from clipping, and
189 * potential overflow from primitives which don't fit into neatly into
190 * VB_MAX vertices.  (This only happens when mixed primitives are
191 * sharing the vb).
192 */
193#define VB_MAX_CLIPPED_VERTS (2 * (6 + MAX_CLIP_PLANES))
194#define VB_SIZE  (VB_MAX + VB_MAX_CLIPPED_VERTS)
195
196
197
198typedef struct gl_context GLcontext;
199
200extern void
201gl_read_config_file( struct gl_context *ctx );
202
203extern void
204gl_register_config_var(const char *name, void (*notify)( const char *, int ));
205
206#endif
207