1/*
2 * Mesa 3-D graphics library
3 * Version:  7.5
4 *
5 * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
6 * Copyright (C) 2008  VMware, Inc.  All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR 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 texture palette / color table size */
94#define MAX_COLOR_TABLE_SIZE 256
95
96/** Max memory to allow for a single texture image (in megabytes) */
97#define MAX_TEXTURE_MBYTES 1024
98
99/** Number of 1D/2D texture mipmap levels */
100#define MAX_TEXTURE_LEVELS 15
101
102/** Number of 3D texture mipmap levels */
103#define MAX_3D_TEXTURE_LEVELS 15
104
105/** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
106#define MAX_CUBE_TEXTURE_LEVELS 15
107
108/** Maximum rectangular texture size - GL_NV_texture_rectangle */
109#define MAX_TEXTURE_RECT_SIZE 16384
110
111/**
112 * Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array
113 */
114#define MAX_ARRAY_TEXTURE_LAYERS 64
115
116/**
117 * Max number of texture coordinate units.  This mainly just applies to
118 * the fixed-function vertex code.  This will be difficult to raise above
119 * eight because of various vertex attribute bitvectors.
120 */
121#define MAX_TEXTURE_COORD_UNITS 8
122
123/**
124 * Max number of texture image units.  Also determines number of texture
125 * samplers in shaders.
126 */
127#define MAX_TEXTURE_IMAGE_UNITS 16
128
129/**
130 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
131 * This value is only used for dimensioning arrays.
132 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
133 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
134 * used almost everywhere else.
135 */
136#define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
137
138
139/** Maximum viewport size */
140#define MAX_VIEWPORT_WIDTH 16384
141#define MAX_VIEWPORT_HEIGHT 16384
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/*@}*/
174
175/**
176 * Per-context constants (power of two)
177 *
178 * \note
179 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS
180 * and \c MAX_VERTEX_PROGRAM_PARAMS.  Otherwise some applications will make
181 * incorrect assumptions.
182 */
183#define MAX_PROGRAM_ENV_PARAMS         256
184
185#define MAX_PROGRAM_MATRICES           8
186#define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
187#define MAX_PROGRAM_CALL_DEPTH         8
188#define MAX_PROGRAM_TEMPS              256
189#define MAX_PROGRAM_ADDRESS_REGS       2
190#define MAX_VARYING                    32    /**< number of float[4] vectors */
191#define MAX_SAMPLERS                   MAX_TEXTURE_IMAGE_UNITS
192#define MAX_PROGRAM_INPUTS             32
193#define MAX_PROGRAM_OUTPUTS            64
194/*@}*/
195
196/** For GL_ARB_vertex_program */
197/*@{*/
198#define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
199#define MAX_VERTEX_PROGRAM_PARAMS       MAX_UNIFORMS
200/*@}*/
201
202/** For GL_ARB_fragment_program */
203/*@{*/
204#define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
205/*@}*/
206
207/** For GL_NV_vertex_program */
208/*@{*/
209#define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
210#define MAX_NV_VERTEX_PROGRAM_TEMPS         12
211#define MAX_NV_VERTEX_PROGRAM_PARAMS        96
212#define MAX_NV_VERTEX_PROGRAM_INPUTS        16
213#define MAX_NV_VERTEX_PROGRAM_OUTPUTS       15
214/*@}*/
215
216/** For GL_NV_fragment_program */
217/*@{*/
218#define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
219#define MAX_NV_FRAGMENT_PROGRAM_TEMPS         96
220#define MAX_NV_FRAGMENT_PROGRAM_PARAMS        64
221#define MAX_NV_FRAGMENT_PROGRAM_INPUTS        12
222#define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS        3
223#define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS    2
224/*@}*/
225
226
227/** For GL_ARB_vertex_shader */
228/*@{*/
229#define MAX_VERTEX_GENERIC_ATTRIBS 16
230#define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
231#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_VERTEX_TEXTURE_IMAGE_UNITS + \
232					  MAX_TEXTURE_IMAGE_UNITS)
233/*@}*/
234
235
236/** For GL_ARB_draw_buffers */
237/*@{*/
238#define MAX_DRAW_BUFFERS 8
239/*@}*/
240
241
242/** For GL_EXT_framebuffer_object */
243/*@{*/
244#define MAX_COLOR_ATTACHMENTS 8
245#define MAX_RENDERBUFFER_SIZE 16384
246/*@}*/
247
248/** For GL_ATI_envmap_bump - support bump mapping on first 8 units */
249#define SUPPORTED_ATI_BUMP_UNITS 0xff
250
251/** For GL_EXT_transform_feedback */
252#define MAX_FEEDBACK_BUFFERS 4
253#define MAX_FEEDBACK_ATTRIBS 32
254
255/** For GL_ARB_geometry_shader4 */
256/*@{*/
257#define MAX_GEOMETRY_TEXTURE_IMAGE_UNITS             8
258#define MAX_GEOMETRY_VARYING_COMPONENTS              32
259#define MAX_VERTEX_VARYING_COMPONENTS                32
260#define MAX_GEOMETRY_UNIFORM_COMPONENTS              512
261#define MAX_GEOMETRY_OUTPUT_VERTICES                 256
262#define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS         1024
263/*@}*/
264
265/** For GL_ARB_debug_output */
266/*@{*/
267#define MAX_DEBUG_LOGGED_MESSAGES   10
268#define MAX_DEBUG_MESSAGE_LENGTH    4096
269/*@}*/
270
271
272/*
273 * Color channel component order
274 *
275 * \note Changes will almost certainly cause problems at this time.
276 */
277#define RCOMP 0
278#define GCOMP 1
279#define BCOMP 2
280#define ACOMP 3
281
282
283/**
284 * Maximum number of temporary vertices required for clipping.
285 *
286 * Used in array_cache and tnl modules.
287 */
288#define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
289
290
291#endif /* MESA_CONFIG_H_INCLUDED */
292