config.h revision 1c09bcfdda4083636a3ac27d804a34ef87875ce7 
1/**
2 * \file config.h
3 * Tunable configuration parameters.
4 */
5
6/*
7 * Mesa 3-D graphics library
8 * Version:  6.5.2
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 MESA_CONFIG_H_INCLUDED
32#define MESA_CONFIG_H_INCLUDED
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 * This needs to be the larger of MAX_TEXTURE_COORD_UNITS and
113 * MAX_TEXTURE_IMAGE_UNITS seen below, since MAX_TEXTURE_UNITS is used
114 * to dimension some arrays that store both coord and image data.
115*/
116#define MAX_TEXTURE_UNITS 8
117
118/*@}*/
119
120
121/**
122 * \name Separate numbers of texture coordinates and texture image units.
123 *
124 * These values will eventually replace most instances of MAX_TEXTURE_UNITS.
125 * We should always have MAX_TEXTURE_COORD_UNITS <= MAX_TEXTURE_IMAGE_UNITS.
126 * And, GL_MAX_TEXTURE_UNITS <= MAX_TEXTURE_COORD_UNITS.
127 */
128/*@{*/
129#define MAX_TEXTURE_COORD_UNITS 8
130#define MAX_TEXTURE_IMAGE_UNITS 8
131/*@}*/
132
133/**
134 * Maximum viewport/image width. Must accomodate all texture sizes too.
135 */
136#define MAX_WIDTH 4096
137/** Maximum viewport/image height */
138#define MAX_HEIGHT 4096
139
140/** Maxmimum size for CVA.  May be overridden by the drivers.  */
141#define MAX_ARRAY_LOCK_SIZE 3000
142
143/** Subpixel precision for antialiasing, window coordinate snapping */
144#define SUB_PIXEL_BITS 4
145
146/** Size of histogram tables */
147#define HISTOGRAM_TABLE_SIZE 256
148
149/** Max convolution filter width */
150#define MAX_CONVOLUTION_WIDTH 9
151/** Max convolution filter height */
152#define MAX_CONVOLUTION_HEIGHT 9
153
154/** For GL_ARB_texture_compression */
155#define MAX_COMPRESSED_TEXTURE_FORMATS 25
156
157/** For GL_EXT_texture_filter_anisotropic */
158#define MAX_TEXTURE_MAX_ANISOTROPY 16.0
159
160/** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
161#define MAX_TEXTURE_LOD_BIAS 11.0
162
163/** For GL_NV_vertex_program */
164/*@{*/
165#define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
166#define MAX_NV_VERTEX_PROGRAM_TEMPS         12
167#define MAX_NV_VERTEX_PROGRAM_PARAMS        128	/* KW: power of two */
168#define MAX_NV_VERTEX_PROGRAM_INPUTS        16
169#define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
170/*@}*/
171
172/** For GL_NV_fragment_program */
173/*@{*/
174#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
175#define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
176#define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
177#define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
178#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
179#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
180/*@}*/
181
182/** For GL_ARB_vertex_program */
183/*@{*/
184#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
185#define MAX_VERTEX_PROGRAM_ATTRIBS     16
186/*@}*/
187
188/** For GL_ARB_fragment_program */
189/*@{*/
190#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
191#define MAX_FRAGMENT_PROGRAM_ALU_INSTRUCTIONS 48
192#define MAX_FRAGMENT_PROGRAM_TEX_INSTRUCTIONS 24
193#define MAX_FRAGMENT_PROGRAM_TEX_INDIRECTIONS  4
194/*@}*/
195
196/** For any program target/extension */
197/*@{*/
198#define MAX_PROGRAM_LOCAL_PARAMS 128 /* KW: power of two */
199#define MAX_PROGRAM_ENV_PARAMS 128
200#define MAX_PROGRAM_MATRICES 8
201#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
202#define MAX_PROGRAM_CALL_DEPTH 8
203#define MAX_PROGRAM_TEMPS 128
204#define MAX_PROGRAM_ADDRESS_REGS 2
205#define MAX_UNIFORMS 128
206#define MAX_VARYING 8
207/*@}*/
208
209/** For GL_ARB_vertex_shader */
210/*@{*/
211#define MAX_VERTEX_ATTRIBS 16
212#define MAX_VERTEX_TEXTURE_IMAGE_UNITS 0
213#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS)
214/*@}*/
215
216
217/** For GL_ARB_draw_buffers */
218/*@{*/
219#define MAX_DRAW_BUFFERS 4
220/*@}*/
221
222
223/** For GL_EXT_framebuffer_object */
224/*@{*/
225#define MAX_COLOR_ATTACHMENTS 8
226/*@}*/
227
228
229
230/**
231 * \name Mesa-specific parameters
232 */
233/*@{*/
234
235
236/**
237 * If non-zero use GLdouble for walking triangle edges, for better accuracy.
238 */
239#define TRIANGLE_WALK_DOUBLE 0
240
241
242/**
243 * Bits per depth buffer value.
244 *
245 * Any reasonable value up to 31 will work.  32 doesn't work because of integer
246 * overflow problems in the rasterizer code.
247 */
248#ifndef DEFAULT_SOFTWARE_DEPTH_BITS
249#define DEFAULT_SOFTWARE_DEPTH_BITS 16
250#endif
251/** Depth buffer data type */
252#if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
253#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
254#else
255#define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
256#endif
257
258
259/**
260 * Bits per stencil value: 8
261 */
262#define STENCIL_BITS 8
263
264
265/**
266 * Bits per color channel:  8, 16 or 32
267 */
268#ifndef CHAN_BITS
269#define CHAN_BITS 8
270#endif
271
272
273/*
274 * Color channel component order
275 *
276 * \note Changes will almost certainly cause problems at this time.
277 */
278#define RCOMP 0
279#define GCOMP 1
280#define BCOMP 2
281#define ACOMP 3
282
283
284/*
285 * Enable/disable features (blocks of code) by setting FEATURE_xyz to 0 or 1.
286 */
287#ifndef _HAVE_FULL_GL
288#define _HAVE_FULL_GL 1
289#endif
290
291#define FEATURE_userclip  _HAVE_FULL_GL
292#define FEATURE_texgen  _HAVE_FULL_GL
293#define FEATURE_windowpos  _HAVE_FULL_GL
294#define FEATURE_ARB_occlusion_query  _HAVE_FULL_GL
295#define FEATURE_ARB_fragment_program  _HAVE_FULL_GL
296#define FEATURE_ARB_vertex_buffer_object  _HAVE_FULL_GL
297#define FEATURE_ARB_vertex_program  _HAVE_FULL_GL
298
299#define FEATURE_ARB_vertex_shader _HAVE_FULL_GL
300#define FEATURE_ARB_fragment_shader _HAVE_FULL_GL
301#define FEATURE_ARB_shader_objects (FEATURE_ARB_vertex_shader || FEATURE_ARB_fragment_shader)
302#define FEATURE_ARB_shading_language_100 FEATURE_ARB_shader_objects
303
304#define FEATURE_EXT_framebuffer_blit _HAVE_FULL_GL
305#define FEATURE_EXT_framebuffer_object _HAVE_FULL_GL
306#define FEATURE_EXT_pixel_buffer_object  _HAVE_FULL_GL
307#define FEATURE_EXT_texture_sRGB _HAVE_FULL_GL
308#define FEATURE_EXT_timer_query  _HAVE_FULL_GL
309#define FEATURE_ATI_fragment_shader _HAVE_FULL_GL
310#define FEATURE_MESA_program_debug  _HAVE_FULL_GL
311#define FEATURE_NV_fence  _HAVE_FULL_GL
312#define FEATURE_NV_fragment_program  _HAVE_FULL_GL
313#define FEATURE_NV_vertex_program  _HAVE_FULL_GL
314/*@}*/
315
316
317/**
318 * Maximum number of temporary vertices required for clipping.
319 *
320 * Used in array_cache and tnl modules.
321 */
322#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
323
324
325#endif /* MESA_CONFIG_H_INCLUDED */
326