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
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.
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 */
64 /** Maximum user-defined clipping planes */
65 #define MAX_CLIP_PLANES 6
67 /** Maximum pixel map lookup table size */
68 #define MAX_PIXEL_MAP_TABLE 256
70 /** Maximum number of auxillary color buffers */
71 #define MAX_AUX_BUFFERS 1
73 /** Maximum order (degree) of curves */
75 # define MAX_EVAL_ORDER 12
77 # define MAX_EVAL_ORDER 30
80 /** Maximum Name stack depth */
81 #define MAX_NAME_STACK_DEPTH 64
83 /** Minimum point size */
84 #define MIN_POINT_SIZE 1.0
85 /** Maximum point size */
86 #define MAX_POINT_SIZE 60.0
87 /** Point size granularity */
88 #define POINT_SIZE_GRANULARITY 0.1
90 /** Minimum line width */
91 #define MIN_LINE_WIDTH 1.0
92 /** Maximum line width */
93 #define MAX_LINE_WIDTH 10.0
94 /** Line width granularity */
95 #define LINE_WIDTH_GRANULARITY 0.1
97 /** Max texture palette / color table size */
98 #define MAX_COLOR_TABLE_SIZE 256
100 /** Max memory to allow for a single texture image (in megabytes) */
101 #define MAX_TEXTURE_MBYTES 1024
103 /** Number of 1D/2D texture mipmap levels */
104 #define MAX_TEXTURE_LEVELS 15
106 /** Number of 3D texture mipmap levels */
107 #define MAX_3D_TEXTURE_LEVELS 15
109 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
110 #define MAX_CUBE_TEXTURE_LEVELS 15
112 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
113 #define MAX_TEXTURE_RECT_SIZE 16384
115 /** Maximum number of layers in a 1D or 2D array texture - GL_MESA_texture_array */
116 #define MAX_ARRAY_TEXTURE_LAYERS 64
119 * Max number of texture coordinate units. This mainly just applies to
120 * the fixed-function vertex code. This will be difficult to raise above
121 * eight because of various vertex attribute bitvectors.
123 #define MAX_TEXTURE_COORD_UNITS 8
126 * Max number of texture image units. Also determines number of texture
127 * samplers in shaders.
129 #define MAX_TEXTURE_IMAGE_UNITS 16
132 * Larger of MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
133 * This value is only used for dimensioning arrays.
134 * Either MAX_TEXTURE_COORD_UNITS or MAX_TEXTURE_IMAGE_UNITS (or the
135 * corresponding ctx->Const.MaxTextureCoord/ImageUnits fields) should be
136 * used almost everywhere else.
138 #define MAX_TEXTURE_UNITS ((MAX_TEXTURE_COORD_UNITS > MAX_TEXTURE_IMAGE_UNITS) ? MAX_TEXTURE_COORD_UNITS : MAX_TEXTURE_IMAGE_UNITS)
142 * Maximum viewport/image width. Must accomodate all texture sizes too.
146 # define MAX_WIDTH 16384
148 /** Maximum viewport/image height */
150 # define MAX_HEIGHT 16384
153 /* XXX: hack to prevent stack overflow on windows until all temporary arrays
154 * [MAX_WIDTH] are allocated from the heap */
156 #undef MAX_TEXTURE_LEVELS
157 #undef MAX_3D_TEXTURE_LEVELS
158 #undef MAX_CUBE_TEXTURE_LEVELS
159 #undef MAX_TEXTURE_RECT_SIZE
162 #define MAX_TEXTURE_LEVELS 13
163 #define MAX_3D_TEXTURE_LEVELS 9
164 #define MAX_CUBE_TEXTURE_LEVELS 13
165 #define MAX_TEXTURE_RECT_SIZE 4096
166 #define MAX_WIDTH 4096
167 #define MAX_HEIGHT 4096
170 /** Maxmimum size for CVA. May be overridden by the drivers. */
171 #define MAX_ARRAY_LOCK_SIZE 3000
173 /** Subpixel precision for antialiasing, window coordinate snapping */
174 #define SUB_PIXEL_BITS 4
176 /** Size of histogram tables */
177 #define HISTOGRAM_TABLE_SIZE 256
179 /** Max convolution filter width */
180 #define MAX_CONVOLUTION_WIDTH 9
181 /** Max convolution filter height */
182 #define MAX_CONVOLUTION_HEIGHT 9
184 /** For GL_ARB_texture_compression */
185 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
187 /** For GL_EXT_texture_filter_anisotropic */
188 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
190 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
191 #define MAX_TEXTURE_LOD_BIAS 14.0
193 /** For any program target/extension */
195 #define MAX_PROGRAM_INSTRUCTIONS (16 * 1024)
198 * Per-program constants (power of two)
200 * \c MAX_PROGRAM_LOCAL_PARAMS and \c MAX_UNIFORMS are just the assembly shader
201 * and GLSL shader names for the same thing. They should \b always have the
202 * same value. Each refers to the number of vec4 values supplied as
203 * per-program parameters.
206 #define MAX_PROGRAM_LOCAL_PARAMS 4096
207 #define MAX_UNIFORMS 4096
211 * Per-context constants (power of two)
214 * This value should always be less than or equal to \c MAX_PROGRAM_LOCAL_PARAMS
215 * and \c MAX_VERTEX_PROGRAM_PARAMS. Otherwise some applications will make
216 * incorrect assumptions.
218 #define MAX_PROGRAM_ENV_PARAMS 256
220 #define MAX_PROGRAM_MATRICES 8
221 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
222 #define MAX_PROGRAM_CALL_DEPTH 8
223 #define MAX_PROGRAM_TEMPS 256
224 #define MAX_PROGRAM_ADDRESS_REGS 2
225 #define MAX_VARYING 16 /**< number of float[4] vectors */
226 #define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS
227 #define MAX_PROGRAM_INPUTS 32
228 #define MAX_PROGRAM_OUTPUTS 64
231 /** For GL_ARB_vertex_program */
233 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
234 #define MAX_VERTEX_PROGRAM_PARAMS MAX_UNIFORMS
237 /** For GL_ARB_fragment_program */
239 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
242 /** For GL_NV_vertex_program */
244 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
245 #define MAX_NV_VERTEX_PROGRAM_TEMPS 12
246 #define MAX_NV_VERTEX_PROGRAM_PARAMS 96
247 #define MAX_NV_VERTEX_PROGRAM_INPUTS 16
248 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15
251 /** For GL_NV_fragment_program */
253 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
254 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96
255 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64
256 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12
257 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3
258 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2
262 /** For GL_ARB_vertex_shader */
264 #define MAX_VERTEX_GENERIC_ATTRIBS 16
265 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
266 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_VERTEX_TEXTURE_IMAGE_UNITS + \
267 MAX_TEXTURE_IMAGE_UNITS)
271 /** For GL_ARB_draw_buffers */
273 #define MAX_DRAW_BUFFERS 8
277 /** For GL_EXT_framebuffer_object */
279 #define MAX_COLOR_ATTACHMENTS 8
282 /** For GL_ATI_envmap_bump - support bump mapping on first 8 units */
283 #define SUPPORTED_ATI_BUMP_UNITS 0xff
285 /** For GL_EXT_transform_feedback */
286 #define MAX_FEEDBACK_ATTRIBS 32
288 /** For GL_ARB_geometry_shader4 */
290 #define MAX_GEOMETRY_TEXTURE_IMAGE_UNITS 8
291 #define MAX_GEOMETRY_VARYING_COMPONENTS 32
292 #define MAX_VERTEX_VARYING_COMPONENTS 32
293 #define MAX_GEOMETRY_UNIFORM_COMPONENTS 512
294 #define MAX_GEOMETRY_OUTPUT_VERTICES 256
295 #define MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS 1024
300 * \name Mesa-specific parameters
306 * If non-zero use GLdouble for walking triangle edges, for better accuracy.
308 #define TRIANGLE_WALK_DOUBLE 0
312 * Bits per depth buffer value (max is 32).
314 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS
315 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
317 /** Depth buffer data type */
318 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
319 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
321 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
326 * Bits per stencil value: 8
328 #define STENCIL_BITS 8
332 * Bits per color channel: 8, 16 or 32
340 * Color channel component order
342 * \note Changes will almost certainly cause problems at this time.
351 * Maximum number of temporary vertices required for clipping.
353 * Used in array_cache and tnl modules.
355 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
358 #endif /* MESA_CONFIG_H_INCLUDED */