2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Copyright (C) 2008 VMware, Inc. All Rights Reserved.
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
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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:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
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
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23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Tunable configuration parameters.
31 #ifndef MESA_CONFIG_H_INCLUDED
32 #define MESA_CONFIG_H_INCLUDED
36 * \name OpenGL implementation limits
40 /** Maximum modelview matrix stack depth */
41 #define MAX_MODELVIEW_STACK_DEPTH 32
43 /** Maximum projection matrix stack depth */
44 #define MAX_PROJECTION_STACK_DEPTH 32
46 /** Maximum texture matrix stack depth */
47 #define MAX_TEXTURE_STACK_DEPTH 10
49 /** Maximum color matrix stack depth */
50 #define MAX_COLOR_STACK_DEPTH 4
52 /** Maximum attribute stack depth */
53 #define MAX_ATTRIB_STACK_DEPTH 16
55 /** Maximum client attribute stack depth */
56 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
58 /** Maximum recursion depth of display list calls */
59 #define MAX_LIST_NESTING 64
61 /** Maximum number of lights */
65 * Maximum number of user-defined clipping planes supported by any driver in
66 * Mesa. This is used to size arrays.
68 #define MAX_CLIP_PLANES 8
70 /** Maximum pixel map lookup table size */
71 #define MAX_PIXEL_MAP_TABLE 256
73 /** Maximum number of auxillary color buffers */
74 #define MAX_AUX_BUFFERS 1
76 /** Maximum order (degree) of curves */
78 # define MAX_EVAL_ORDER 12
80 # define MAX_EVAL_ORDER 30
83 /** Maximum Name stack depth */
84 #define MAX_NAME_STACK_DEPTH 64
86 /** Minimum point size */
87 #define MIN_POINT_SIZE 1.0
88 /** Maximum point size */
89 #define MAX_POINT_SIZE 60.0
90 /** Point size granularity */
91 #define POINT_SIZE_GRANULARITY 0.1
93 /** Minimum line width */
94 #define MIN_LINE_WIDTH 1.0
95 /** Maximum line width */
96 #define MAX_LINE_WIDTH 10.0
97 /** Line width granularity */
98 #define LINE_WIDTH_GRANULARITY 0.1
100 /** Max texture palette / color table size */
101 #define MAX_COLOR_TABLE_SIZE 256
103 /** Max memory to allow for a single texture image (in megabytes) */
104 #define MAX_TEXTURE_MBYTES 1024
106 /** Number of 1D/2D texture mipmap levels */
107 #define MAX_TEXTURE_LEVELS 15
109 /** Number of 3D texture mipmap levels */
110 #define MAX_3D_TEXTURE_LEVELS 15
112 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
113 #define MAX_CUBE_TEXTURE_LEVELS 15
116 * Max number of texture coordinate units. This mainly just applies to
117 * the fixed-function vertex code. This will be difficult to raise above
118 * eight because of various vertex attribute bitvectors.
120 #define MAX_TEXTURE_COORD_UNITS 8
123 * Max number of texture image units. Also determines number of texture
124 * samplers in shaders.
126 #define MAX_TEXTURE_IMAGE_UNITS 16
129 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
130 * This value is only used for dimensioning arrays.
131 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
132 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
133 * used almost everywhere else.
135 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
139 * Maximum viewport/image width. Must accomodate all texture sizes too.
143 # define MAX_WIDTH 16384
145 /** Maximum viewport/image height */
147 # define MAX_HEIGHT 16384
150 /* XXX: hack to prevent stack overflow on windows until all temporary arrays
151 * [MAX_WIDTH] are allocated from the heap */
153 #undef MAX_TEXTURE_LEVELS
154 #undef MAX_3D_TEXTURE_LEVELS
155 #undef MAX_CUBE_TEXTURE_LEVELS
156 #undef MAX_TEXTURE_RECT_SIZE
159 #define MAX_TEXTURE_LEVELS 13
160 #define MAX_3D_TEXTURE_LEVELS 9
161 #define MAX_CUBE_TEXTURE_LEVELS 13
162 #define MAX_WIDTH 4096
163 #define MAX_HEIGHT 4096
166 /** Maxmimum size for CVA. May be overridden by the drivers. */
167 #define MAX_ARRAY_LOCK_SIZE 3000
169 /** Subpixel precision for antialiasing, window coordinate snapping */
170 #define SUB_PIXEL_BITS 4
172 /** Size of histogram tables */
173 #define HISTOGRAM_TABLE_SIZE 256
175 /** Max convolution filter width */
176 #define MAX_CONVOLUTION_WIDTH 9
177 /** Max convolution filter height */
178 #define MAX_CONVOLUTION_HEIGHT 9
180 /** For GL_ARB_texture_compression */
181 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
183 /** For GL_EXT_texture_filter_anisotropic */
184 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
186 /** For any program target/extension */
188 #define MAX_PROGRAM_INSTRUCTIONS (16 * 1024)
191 * Per-program constants (power of two)
193 * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader
194 * and GLSL shader names for the same thing. They should \b always have the
195 * same value. Each refers to the number of vec4 values supplied as
196 * per-program parameters.
199 #define MAX_PROGRAM_LOCAL_PARAMS 4096
200 #define MAX_UNIFORMS 4096
204 * Per-context constants (power of two)
207 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS
208 * and \c MAX_VERTEX_PROGRAM_PARAMS. Otherwise some applications will make
209 * incorrect assumptions.
211 #define MAX_PROGRAM_ENV_PARAMS 256
213 #define MAX_PROGRAM_MATRICES 8
214 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
215 #define MAX_PROGRAM_CALL_DEPTH 8
216 #define MAX_PROGRAM_TEMPS 256
217 #define MAX_PROGRAM_ADDRESS_REGS 2
218 #define MAX_VARYING 16 /**< number of float[4] vectors */
219 #define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS
220 #define MAX_PROGRAM_INPUTS 32
221 #define MAX_PROGRAM_OUTPUTS 64
224 /** For GL_ARB_vertex_program */
226 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
227 #define MAX_VERTEX_PROGRAM_PARAMS MAX_UNIFORMS
230 /** For GL_ARB_fragment_program */
232 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
235 /** For GL_NV_vertex_program */
237 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
238 #define MAX_NV_VERTEX_PROGRAM_TEMPS 12
239 #define MAX_NV_VERTEX_PROGRAM_PARAMS 96
240 #define MAX_NV_VERTEX_PROGRAM_INPUTS 16
241 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15
244 /** For GL_NV_fragment_program */
246 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
247 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96
248 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64
249 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12
250 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3
251 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2
255 /** For GL_ARB_vertex_shader */
257 #define MAX_VERTEX_GENERIC_ATTRIBS 16
258 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
259 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_VERTEX_TEXTURE_IMAGE_UNITS + \
260 MAX_TEXTURE_IMAGE_UNITS)
264 /** For GL_EXT_framebuffer_object */
266 #define MAX_COLOR_ATTACHMENTS 8
269 /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */
270 #define SUPPORTED_ATI_BUMP_UNITS 0xff
274 * \name Mesa-specific parameters
280 * If non-zero use GLdouble for walking triangle edges, for better accuracy.
282 #define TRIANGLE_WALK_DOUBLE 0
286 * Bits per depth buffer value (max is 32).
288 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS
289 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
291 /** Depth buffer data type */
292 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
293 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
295 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
300 * Bits per stencil value: 8
302 #define STENCIL_BITS 8
306 * For swrast, bits per color channel: 8, 16 or 32
314 * Color channel component order
316 * \note Changes will almost certainly cause problems at this time.
325 * Maximum number of temporary vertices required for clipping.
327 * Used in array_cache and tnl modules.
329 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
332 #endif /* MESA_CONFIG_H_INCLUDED */