config.h revision 61fbc816570820757afdbc3cd04cd475b337ad4f 
1/**
2 * \file config.h
3 * Tunable configuration parameters.
4 */
5
6/*
7 * Mesa 3-D graphics library
8 * Version:  7.1
9 *
10 * Copyright (C) 1999-2007  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 60.0
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/** Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array */
112#define MAX_ARRAY_TEXTURE_LAYERS 64
113
114/** Number of texture units - GL_ARB_multitexture
115 * This needs to be the larger of MAX_TEXTURE_COORD_UNITS and
116 * MAX_TEXTURE_IMAGE_UNITS seen below, since MAX_TEXTURE_UNITS is used
117 * to dimension some arrays that store both coord and image data.
118*/
119#define MAX_TEXTURE_UNITS 8
120
121/*@}*/
122
123
124/**
125 * \name Separate numbers of texture coordinates and texture image units.
126 *
127 * These values will eventually replace most instances of MAX_TEXTURE_UNITS.
128 * We should always have MAX_TEXTURE_COORD_UNITS <= MAX_TEXTURE_IMAGE_UNITS.
129 * And, GL_MAX_TEXTURE_UNITS <= MAX_TEXTURE_COORD_UNITS.
130 */
131/*@{*/
132#define MAX_TEXTURE_COORD_UNITS 8
133#define MAX_TEXTURE_IMAGE_UNITS 8
134/*@}*/
135
136/**
137 * Maximum viewport/image width. Must accomodate all texture sizes too.
138 */
139#define MAX_WIDTH 4096
140/** Maximum viewport/image height */
141#define MAX_HEIGHT 4096
142
143/** Maxmimum size for CVA.  May be overridden by the drivers.  */
144#define MAX_ARRAY_LOCK_SIZE 3000
145
146/** Subpixel precision for antialiasing, window coordinate snapping */
147#define SUB_PIXEL_BITS 4
148
149/** Size of histogram tables */
150#define HISTOGRAM_TABLE_SIZE 256
151
152/** Max convolution filter width */
153#define MAX_CONVOLUTION_WIDTH 9
154/** Max convolution filter height */
155#define MAX_CONVOLUTION_HEIGHT 9
156
157/** For GL_ARB_texture_compression */
158#define MAX_COMPRESSED_TEXTURE_FORMATS 25
159
160/** For GL_EXT_texture_filter_anisotropic */
161#define MAX_TEXTURE_MAX_ANISOTROPY 16.0
162
163/** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
164#define MAX_TEXTURE_LOD_BIAS 11.0
165
166/** For GL_ARB_vertex_program */
167/*@{*/
168#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
169#define MAX_VERTEX_PROGRAM_ATTRIBS     16
170/*@}*/
171
172/** For GL_ARB_fragment_program */
173/*@{*/
174#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
175#define MAX_FRAGMENT_PROGRAM_ALU_INSTRUCTIONS 48
176#define MAX_FRAGMENT_PROGRAM_TEX_INSTRUCTIONS 24
177#define MAX_FRAGMENT_PROGRAM_TEX_INDIRECTIONS  4
178/*@}*/
179
180/** For any program target/extension */
181/*@{*/
182#define MAX_PROGRAM_LOCAL_PARAMS 128 /* KW: power of two */
183#define MAX_PROGRAM_ENV_PARAMS 128
184#define MAX_PROGRAM_MATRICES 8
185#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
186#define MAX_PROGRAM_CALL_DEPTH 8
187#define MAX_PROGRAM_TEMPS 128
188#define MAX_PROGRAM_ADDRESS_REGS 2
189#define MAX_UNIFORMS 128
190#define MAX_VARYING 8
191/*@}*/
192
193/** For GL_NV_vertex_program */
194/*@{*/
195#define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
196#define MAX_NV_VERTEX_PROGRAM_TEMPS         12
197#define MAX_NV_VERTEX_PROGRAM_PARAMS        MAX_PROGRAM_ENV_PARAMS
198#define MAX_NV_VERTEX_PROGRAM_INPUTS        16
199#define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
200/*@}*/
201
202/** For GL_NV_fragment_program */
203/*@{*/
204#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
205#define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
206#define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
207#define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
208#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
209#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
210/*@}*/
211
212
213/** For GL_ARB_vertex_shader */
214/*@{*/
215#define MAX_VERTEX_ATTRIBS 16
216#define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_UNITS
217#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS)
218/*@}*/
219
220
221/** For GL_ARB_draw_buffers */
222/*@{*/
223#define MAX_DRAW_BUFFERS 4
224/*@}*/
225
226
227/** For GL_EXT_framebuffer_object */
228/*@{*/
229#define MAX_COLOR_ATTACHMENTS 8
230/*@}*/
231
232
233
234/**
235 * \name Mesa-specific parameters
236 */
237/*@{*/
238
239
240/**
241 * If non-zero use GLdouble for walking triangle edges, for better accuracy.
242 */
243#define TRIANGLE_WALK_DOUBLE 0
244
245
246/**
247 * Bits per depth buffer value (max is 32).
248 */
249#ifndef DEFAULT_SOFTWARE_DEPTH_BITS
250#define DEFAULT_SOFTWARE_DEPTH_BITS 16
251#endif
252/** Depth buffer data type */
253#if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
254#define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
255#else
256#define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
257#endif
258
259
260/**
261 * Bits per stencil value: 8
262 */
263#define STENCIL_BITS 8
264
265
266/**
267 * Bits per color channel:  8, 16 or 32
268 */
269#ifndef CHAN_BITS
270#define CHAN_BITS 8
271#endif
272
273
274/*
275 * Color channel component order
276 *
277 * \note Changes will almost certainly cause problems at this time.
278 */
279#define RCOMP 0
280#define GCOMP 1
281#define BCOMP 2
282#define ACOMP 3
283
284
285/*
286 * Enable/disable features (blocks of code) by setting FEATURE_xyz to 0 or 1.
287 */
288#ifndef _HAVE_FULL_GL
289#define _HAVE_FULL_GL 1
290#endif
291
292#define FEATURE_userclip  _HAVE_FULL_GL
293#define FEATURE_texgen  _HAVE_FULL_GL
294#define FEATURE_windowpos  _HAVE_FULL_GL
295#define FEATURE_ARB_occlusion_query  _HAVE_FULL_GL
296#define FEATURE_ARB_fragment_program  _HAVE_FULL_GL
297#define FEATURE_ARB_vertex_buffer_object  _HAVE_FULL_GL
298#define FEATURE_ARB_vertex_program  _HAVE_FULL_GL
299
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_ARB_shading_language_120 FEATURE_ARB_shader_objects
305
306#define FEATURE_EXT_framebuffer_blit _HAVE_FULL_GL
307#define FEATURE_EXT_framebuffer_object _HAVE_FULL_GL
308#define FEATURE_EXT_pixel_buffer_object  _HAVE_FULL_GL
309#define FEATURE_EXT_texture_sRGB _HAVE_FULL_GL
310#define FEATURE_EXT_timer_query  _HAVE_FULL_GL
311#define FEATURE_ATI_fragment_shader _HAVE_FULL_GL
312#define FEATURE_MESA_program_debug  _HAVE_FULL_GL
313#define FEATURE_NV_fence  _HAVE_FULL_GL
314#define FEATURE_NV_fragment_program  _HAVE_FULL_GL
315#define FEATURE_NV_vertex_program  _HAVE_FULL_GL
316/*@}*/
317
318
319/**
320 * Maximum number of temporary vertices required for clipping.
321 *
322 * Used in array_cache and tnl modules.
323 */
324#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
325
326
327#endif /* MESA_CONFIG_H_INCLUDED */
328