config.h revision af69d88d 
1/*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
5 * Copyright (C) 2008  VMware, Inc.  All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26/**
27 * \file config.h
28 * Tunable configuration parameters.
29 */
30
31#ifndef MESA_CONFIG_H_INCLUDED
32#define MESA_CONFIG_H_INCLUDED
33
34
35/**
36 * \name OpenGL implementation limits
37 */
38/*@{*/
39
40/** Maximum modelview matrix stack depth */
41#define MAX_MODELVIEW_STACK_DEPTH 32
42
43/** Maximum projection matrix stack depth */
44#define MAX_PROJECTION_STACK_DEPTH 32
45
46/** Maximum texture matrix stack depth */
47#define MAX_TEXTURE_STACK_DEPTH 10
48
49/** Maximum attribute stack depth */
50#define MAX_ATTRIB_STACK_DEPTH 16
51
52/** Maximum client attribute stack depth */
53#define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
54
55/** Maximum recursion depth of display list calls */
56#define MAX_LIST_NESTING 64
57
58/** Maximum number of lights */
59#define MAX_LIGHTS 8
60
61/**
62 * Maximum number of user-defined clipping planes supported by any driver in
63 * Mesa.  This is used to size arrays.
64 */
65#define MAX_CLIP_PLANES 8
66
67/** Maximum pixel map lookup table size */
68#define MAX_PIXEL_MAP_TABLE 256
69
70/** Maximum number of auxillary color buffers */
71#define MAX_AUX_BUFFERS 1
72
73/** Maximum order (degree) of curves */
74#define MAX_EVAL_ORDER 30
75
76/** Maximum Name stack depth */
77#define MAX_NAME_STACK_DEPTH 64
78
79/** Minimum point size */
80#define MIN_POINT_SIZE 1.0
81/** Maximum point size */
82#define MAX_POINT_SIZE 60.0
83/** Point size granularity */
84#define POINT_SIZE_GRANULARITY 0.1
85
86/** Minimum line width */
87#define MIN_LINE_WIDTH 1.0
88/** Maximum line width */
89#define MAX_LINE_WIDTH 10.0
90/** Line width granularity */
91#define LINE_WIDTH_GRANULARITY 0.1
92
93/** Max memory to allow for a single texture image (in megabytes) */
94#define MAX_TEXTURE_MBYTES 1024
95
96/** Number of 1D/2D texture mipmap levels */
97#define MAX_TEXTURE_LEVELS 15
98
99/** Number of 3D texture mipmap levels */
100#define MAX_3D_TEXTURE_LEVELS 15
101
102/** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
103#define MAX_CUBE_TEXTURE_LEVELS 15
104
105/** Maximum rectangular texture size - GL_NV_texture_rectangle */
106#define MAX_TEXTURE_RECT_SIZE 16384
107
108/**
109 * Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array
110 */
111#define MAX_ARRAY_TEXTURE_LAYERS 64
112
113/**
114 * Max number of texture coordinate units.  This mainly just applies to
115 * the fixed-function vertex code.  This will be difficult to raise above
116 * eight because of various vertex attribute bitvectors.
117 */
118#define MAX_TEXTURE_COORD_UNITS 8
119
120/**
121 * Max number of texture image units.  Also determines number of texture
122 * samplers in shaders.
123 */
124#define MAX_TEXTURE_IMAGE_UNITS 32
125
126/**
127 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
128 * This value is only used for dimensioning arrays.
129 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
130 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
131 * used almost everywhere else.
132 */
133#define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
134
135
136/** Maximum viewport size */
137#define MAX_VIEWPORT_WIDTH 16384
138#define MAX_VIEWPORT_HEIGHT 16384
139
140/** Maximun number of viewports supported with ARB_viewport_array */
141#define MAX_VIEWPORTS 16
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/** For GL_ARB_texture_compression */
150#define MAX_COMPRESSED_TEXTURE_FORMATS 25
151
152/** For GL_EXT_texture_filter_anisotropic */
153#define MAX_TEXTURE_MAX_ANISOTROPY 16.0
154
155/** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
156#define MAX_TEXTURE_LOD_BIAS 14.0
157
158/** For any program target/extension */
159/*@{*/
160#define MAX_PROGRAM_INSTRUCTIONS       (16 * 1024)
161
162/**
163 * Per-program constants (power of two)
164 *
165 * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader
166 * and GLSL shader names for the same thing.  They should \b always have the
167 * same value.  Each refers to the number of vec4 values supplied as
168 * per-program parameters.
169 */
170/*@{*/
171#define MAX_PROGRAM_LOCAL_PARAMS       4096
172#define MAX_UNIFORMS                   4096
173#define MAX_UNIFORM_BUFFERS            15 /* + 1 default uniform buffer */
174/* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
175#define MAX_COMBINED_UNIFORM_BUFFERS   (MAX_UNIFORM_BUFFERS * 6)
176#define MAX_ATOMIC_COUNTERS            4096
177/* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
178#define MAX_COMBINED_ATOMIC_BUFFERS    (MAX_UNIFORM_BUFFERS * 6)
179/* Size of an atomic counter in bytes according to ARB_shader_atomic_counters */
180#define ATOMIC_COUNTER_SIZE            4
181#define MAX_IMAGE_UNIFORMS             16
182/* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
183#define MAX_IMAGE_UNITS                (MAX_IMAGE_UNIFORMS * 6)
184/*@}*/
185
186/**
187 * Per-context constants (power of two)
188 *
189 * \note
190 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS
191 * and \c MAX_VERTEX_PROGRAM_PARAMS.  Otherwise some applications will make
192 * incorrect assumptions.
193 */
194#define MAX_PROGRAM_ENV_PARAMS         256
195
196#define MAX_PROGRAM_MATRICES           8
197#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
198#define MAX_PROGRAM_CALL_DEPTH         8
199#define MAX_PROGRAM_TEMPS              256
200#define MAX_PROGRAM_ADDRESS_REGS       1
201#define MAX_VARYING                    32    /**< number of float[4] vectors */
202#define MAX_SAMPLERS                   MAX_TEXTURE_IMAGE_UNITS
203#define MAX_PROGRAM_INPUTS             32
204#define MAX_PROGRAM_OUTPUTS            64
205/*@}*/
206
207/** For GL_ARB_vertex_program */
208/*@{*/
209#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
210#define MAX_VERTEX_PROGRAM_PARAMS       MAX_UNIFORMS
211/*@}*/
212
213/** For GL_ARB_fragment_program */
214/*@{*/
215#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
216/*@}*/
217
218/** For GL_NV_fragment_program */
219/*@{*/
220#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
221#define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
222#define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
223#define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
224#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
225#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
226/*@}*/
227
228
229/** For GL_ARB_vertex_shader */
230/*@{*/
231#define MAX_VERTEX_GENERIC_ATTRIBS 16
232/* 6 is for vertex, hull, domain, geometry, fragment, and compute shader. */
233#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS * 6)
234/*@}*/
235
236
237/** For GL_ARB_draw_buffers */
238/*@{*/
239#define MAX_DRAW_BUFFERS 8
240/*@}*/
241
242
243/** For GL_EXT_framebuffer_object */
244/*@{*/
245#define MAX_COLOR_ATTACHMENTS 8
246#define MAX_RENDERBUFFER_SIZE 16384
247/*@}*/
248
249/** For GL_ATI_envmap_bump - support bump mapping on first 8 units */
250#define SUPPORTED_ATI_BUMP_UNITS 0xff
251
252/** For GL_EXT_transform_feedback */
253#define MAX_FEEDBACK_BUFFERS 4
254#define MAX_FEEDBACK_ATTRIBS 32
255
256/** For GL_ARB_geometry_shader4 */
257/*@{*/
258#define MAX_GEOMETRY_UNIFORM_COMPONENTS              512
259#define MAX_GEOMETRY_OUTPUT_VERTICES                 256
260#define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS         1024
261/*@}*/
262
263/** For GL_ARB_debug_output and GL_KHR_debug */
264/*@{*/
265#define MAX_DEBUG_LOGGED_MESSAGES   10
266#define MAX_DEBUG_MESSAGE_LENGTH    4096
267/*@}*/
268
269/** For GL_KHR_debug */
270/*@{*/
271#define MAX_LABEL_LENGTH 256
272#define MAX_DEBUG_GROUP_STACK_DEPTH 64
273/*@}*/
274
275/** For GL_ARB_gpu_shader5 */
276/*@{*/
277#define MAX_GEOMETRY_SHADER_INVOCATIONS     32
278#define MIN_FRAGMENT_INTERPOLATION_OFFSET   -0.5
279#define MAX_FRAGMENT_INTERPOLATION_OFFSET   0.5
280#define FRAGMENT_INTERPOLATION_OFFSET_BITS  4
281#define MAX_VERTEX_STREAMS                  4
282/*@}*/
283
284/** For GL_INTEL_performance_query */
285/*@{*/
286#define MAX_PERFQUERY_QUERY_NAME_LENGTH     256
287#define MAX_PERFQUERY_COUNTER_NAME_LENGTH   256
288#define MAX_PERFQUERY_COUNTER_DESC_LENGTH   1024
289#define PERFQUERY_HAVE_GPA_EXTENDED_COUNTERS 0
290/*@}*/
291
292/** For GL_ARB_compute_shader */
293/*@{*/
294#define MAX_COMPUTE_UNIFORM_BLOCKS          12
295#define MAX_COMPUTE_TEXTURE_IMAGE_UNITS     16
296#define MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS  8
297#define MAX_COMPUTE_ATOMIC_COUNTERS         8
298#define MAX_COMPUTE_SHARED_MEMORY_SIZE      32768
299#define MAX_COMPUTE_UNIFORM_COMPONENTS      512
300#define MAX_COMPUTE_IMAGE_UNIFORMS          8
301/*@}*/
302
303/*
304 * Color channel component order
305 *
306 * \note Changes will almost certainly cause problems at this time.
307 */
308#define RCOMP 0
309#define GCOMP 1
310#define BCOMP 2
311#define ACOMP 3
312
313
314/**
315 * Maximum number of temporary vertices required for clipping.
316 *
317 * Used in array_cache and tnl modules.
318 */
319#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
320
321
322#endif /* MESA_CONFIG_H_INCLUDED */
323