config.h revision ae76be49eb4954a691b765077fc77875964b37e1 
1/**
2 * \file config.h
3 * Tunable configuration parameters.
4 */
5
6/*
7 * Mesa 3-D graphics library
8 * Version:  6.5
9 *
10 * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice shall be included
20 * in all copies or substantial portions of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
23 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
25 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
26 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
27 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 */
29
30
31#ifndef CONFIG_H
32#define CONFIG_H
33
34/**
35 * \name OpenGL implementation limits
36 */
37/*@{*/
38
39/** Maximum modelview matrix stack depth */
40#define MAX_MODELVIEW_STACK_DEPTH 32
41
42/** Maximum projection matrix stack depth */
43#define MAX_PROJECTION_STACK_DEPTH 32
44
45/** Maximum texture matrix stack depth */
46#define MAX_TEXTURE_STACK_DEPTH 10
47
48/** Maximum color matrix stack depth */
49#define MAX_COLOR_STACK_DEPTH 4
50
51/** Maximum attribute stack depth */
52#define MAX_ATTRIB_STACK_DEPTH 16
53
54/** Maximum client attribute stack depth */
55#define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
56
57/** Maximum recursion depth of display list calls */
58#define MAX_LIST_NESTING 64
59
60/** Maximum number of lights */
61#define MAX_LIGHTS 8
62
63/** Maximum user-defined clipping planes */
64#define MAX_CLIP_PLANES 6
65
66/** Maximum pixel map lookup table size */
67#define MAX_PIXEL_MAP_TABLE 256
68
69/** Maximum number of auxillary color buffers */
70#define MAX_AUX_BUFFERS 4
71
72/** Maximum order (degree) of curves */
73#ifdef AMIGA
74#   define MAX_EVAL_ORDER 12
75#else
76#   define MAX_EVAL_ORDER 30
77#endif
78
79/** Maximum Name stack depth */
80#define MAX_NAME_STACK_DEPTH 64
81
82/** Minimum point size */
83#define MIN_POINT_SIZE 1.0
84/** Maximum point size */
85#define MAX_POINT_SIZE 20.0
86/** Point size granularity */
87#define POINT_SIZE_GRANULARITY 0.1
88
89/** Minimum line width */
90#define MIN_LINE_WIDTH 1.0
91/** Maximum line width */
92#define MAX_LINE_WIDTH 10.0
93/** Line width granularity */
94#define LINE_WIDTH_GRANULARITY 0.1
95
96/** Max texture palette / color table size */
97#define MAX_COLOR_TABLE_SIZE 256
98
99/** Number of 1D/2D texture mipmap levels */
100#define MAX_TEXTURE_LEVELS 12
101
102/** Number of 3D texture mipmap levels */
103#define MAX_3D_TEXTURE_LEVELS 9
104
105/** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
106#define MAX_CUBE_TEXTURE_LEVELS 12
107
108/** Maximum rectangular texture size - GL_NV_texture_rectangle */
109#define MAX_TEXTURE_RECT_SIZE 2048
110
111/** Number of texture units - GL_ARB_multitexture */
112#define MAX_TEXTURE_UNITS 8
113
114/*@}*/
115
116
117/**
118 * \name Separate numbers of texture coordinates and texture image units.
119 *
120 * These values will eventually replace most instances of MAX_TEXTURE_UNITS.
121 * We should always have MAX_TEXTURE_COORD_UNITS <= MAX_TEXTURE_IMAGE_UNITS.
122 * And, GL_MAX_TEXTURE_UNITS <= MAX_TEXTURE_COORD_UNITS.
123 */
124/*@{*/
125#define MAX_TEXTURE_COORD_UNITS 8
126#define MAX_TEXTURE_IMAGE_UNITS 8
127/*@}*/
128
129/**
130 * Maximum viewport/image width. Must accomodate all texture sizes too.
131 */
132#define MAX_WIDTH 4096
133/** Maximum viewport/image height */
134#define MAX_HEIGHT 4096
135
136/** Maxmimum size for CVA.  May be overridden by the drivers.  */
137#define MAX_ARRAY_LOCK_SIZE 3000
138
139/** Subpixel precision for antialiasing, window coordinate snapping */
140#define SUB_PIXEL_BITS 4
141
142/** Size of histogram tables */
143#define HISTOGRAM_TABLE_SIZE 256
144
145/** Max convolution filter width */
146#define MAX_CONVOLUTION_WIDTH 9
147/** Max convolution filter height */
148#define MAX_CONVOLUTION_HEIGHT 9
149
150/** For GL_ARB_texture_compression */
151#define MAX_COMPRESSED_TEXTURE_FORMATS 25
152
153/** For GL_EXT_texture_filter_anisotropic */
154#define MAX_TEXTURE_MAX_ANISOTROPY 16.0
155
156/** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
157#define MAX_TEXTURE_LOD_BIAS 11.0
158
159/** For GL_NV_vertex_program */
160/*@{*/
161#define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
162#define MAX_NV_VERTEX_PROGRAM_TEMPS         12
163#define MAX_NV_VERTEX_PROGRAM_PARAMS        128	/* KW: power of two */
164#define MAX_NV_VERTEX_PROGRAM_INPUTS        16
165#define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
166/*@}*/
167
168/** For GL_NV_fragment_program */
169/*@{*/
170#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 128
171#define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
172#define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
173#define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
174#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
175#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
176/*@}*/
177
178/** For GL_ARB_vertex_program */
179/*@{*/
180#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
181#define MAX_VERTEX_PROGRAM_ATTRIBS     16
182/*@}*/
183
184/** For GL_ARB_fragment_program */
185/*@{*/
186#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
187#define MAX_FRAGMENT_PROGRAM_ALU_INSTRUCTIONS 48
188#define MAX_FRAGMENT_PROGRAM_TEX_INSTRUCTIONS 24
189#define MAX_FRAGMENT_PROGRAM_TEX_INDIRECTIONS  4
190/*@}*/
191
192/** For any program target/extension */
193/*@{*/
194#define MAX_PROGRAM_LOCAL_PARAMS 128 /* KW: power of two */
195#define MAX_PROGRAM_MATRICES 8
196#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
197/*@}*/
198
199/** For GL_ARB_fragment_shader */
200/*@{*/
201#define MAX_FRAGMENT_UNIFORM_COMPONENTS 64
202/*@}*/
203
204/** For GL_ARB_vertex_shader */
205/*@{*/
206#define MAX_VERTEX_ATTRIBS 16
207#define MAX_VERTEX_UNIFORM_COMPONENTS 512
208#define MAX_VARYING_FLOATS 32
209#define MAX_VERTEX_TEXTURE_IMAGE_UNITS 0
210#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS)
211/*@}*/
212
213
214/** For GL_ARB_draw_buffers */
215/*@{*/
216#define MAX_DRAW_BUFFERS 1
217/*@}*/
218
219
220/** For GL_EXT_framebuffer_object */
221/*@{*/
222#define MAX_COLOR_ATTACHMENTS 8
223/*@}*/
224
225
226
227/**
228 * \name Mesa-specific parameters
229 */
230/*@{*/
231
232
233/**
234 * If non-zero use GLdouble for walking triangle edges, for better accuracy.
235 */
236#define TRIANGLE_WALK_DOUBLE 0
237
238
239/**
240 * Bits per depth buffer value.
241 *
242 * Any reasonable value up to 31 will work.  32 doesn't work because of integer
243 * overflow problems in the rasterizer code.
244 */
245#ifndef DEFAULT_SOFTWARE_DEPTH_BITS
246#define DEFAULT_SOFTWARE_DEPTH_BITS 16
247#endif
248/** Depth buffer data type */
249#if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
250#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
251#else
252#define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
253#endif
254
255
256/**
257 * Bits per stencil value: 8
258 */
259#define STENCIL_BITS 8
260
261
262/**
263 * Bits per color channel:  8, 16 or 32
264 */
265#ifndef CHAN_BITS
266#define CHAN_BITS 8
267#endif
268
269
270/*
271 * Color channel component order
272 *
273 * \note Changes will almost certainly cause problems at this time.
274 */
275#define RCOMP 0
276#define GCOMP 1
277#define BCOMP 2
278#define ACOMP 3
279
280
281/*
282 * Enable/disable features (blocks of code) by setting FEATURE_xyz to 0 or 1.
283 */
284#ifndef _HAVE_FULL_GL
285#define _HAVE_FULL_GL 1
286#endif
287
288#define FEATURE_ARB_vertex_buffer_object  _HAVE_FULL_GL
289#define FEATURE_ARB_vertex_program  _HAVE_FULL_GL
290#define FEATURE_ARB_fragment_program  _HAVE_FULL_GL
291#define FEATURE_ARB_occlusion_query  _HAVE_FULL_GL
292#define FEATURE_EXT_pixel_buffer_object  _HAVE_FULL_GL
293#define FEATURE_MESA_program_debug  _HAVE_FULL_GL
294#define FEATURE_NV_fence  _HAVE_FULL_GL
295#define FEATURE_NV_fragment_program  _HAVE_FULL_GL
296#define FEATURE_NV_vertex_program  _HAVE_FULL_GL
297#define FEATURE_userclip  _HAVE_FULL_GL
298#define FEATURE_texgen  _HAVE_FULL_GL
299#define FEATURE_windowpos  _HAVE_FULL_GL
300#define FEATURE_ARB_vertex_shader _HAVE_FULL_GL
301#define FEATURE_ARB_fragment_shader _HAVE_FULL_GL
302#define FEATURE_ARB_shader_objects (FEATURE_ARB_vertex_shader || FEATURE_ARB_fragment_shader)
303#define FEATURE_ARB_shading_language_100 FEATURE_ARB_shader_objects
304#define FEATURE_ATI_fragment_shader _HAVE_FULL_GL
305#define FEATURE_EXT_framebuffer_object _HAVE_FULL_GL
306#define FEATURE_EXT_framebuffer_blit _HAVE_FULL_GL
307/*@}*/
308
309
310/**
311 * Maximum number of temporary vertices required for clipping.
312 *
313 * Used in array_cache and tnl modules.
314 */
315#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
316
317
318#endif /* CONFIG_H */
319