9d0cd18e05f58290ac9637b6700b57a3895b8671
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
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:
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
35 #include "main/mfeatures.h"
39 * \name OpenGL implementation limits
43 /** Maximum modelview matrix stack depth */
44 #define MAX_MODELVIEW_STACK_DEPTH 32
46 /** Maximum projection matrix stack depth */
47 #define MAX_PROJECTION_STACK_DEPTH 32
49 /** Maximum texture matrix stack depth */
50 #define MAX_TEXTURE_STACK_DEPTH 10
52 /** Maximum color matrix stack depth */
53 #define MAX_COLOR_STACK_DEPTH 4
55 /** Maximum attribute stack depth */
56 #define MAX_ATTRIB_STACK_DEPTH 16
58 /** Maximum client attribute stack depth */
59 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
61 /** Maximum recursion depth of display list calls */
62 #define MAX_LIST_NESTING 64
64 /** Maximum number of lights */
67 /** Maximum user-defined clipping planes */
68 #define MAX_CLIP_PLANES 6
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 4
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 /** Number of 1D/2D texture mipmap levels */
104 #define MAX_TEXTURE_LEVELS 13
106 /** Number of 3D texture mipmap levels */
107 #define MAX_3D_TEXTURE_LEVELS 9
109 /** Number of cube texture mipmap levels - GL_ARB_texture_cube_map */
110 #define MAX_CUBE_TEXTURE_LEVELS 13
112 /** Maximum rectangular texture size - GL_NV_texture_rectangle */
113 #define MAX_TEXTURE_RECT_SIZE 4096
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.
144 #define MAX_WIDTH 4096
145 /** Maximum viewport/image height */
146 #define MAX_HEIGHT 4096
148 /** Maxmimum size for CVA. May be overridden by the drivers. */
149 #define MAX_ARRAY_LOCK_SIZE 3000
151 /** Subpixel precision for antialiasing, window coordinate snapping */
152 #define SUB_PIXEL_BITS 4
154 /** Size of histogram tables */
155 #define HISTOGRAM_TABLE_SIZE 256
157 /** Max convolution filter width */
158 #define MAX_CONVOLUTION_WIDTH 9
159 /** Max convolution filter height */
160 #define MAX_CONVOLUTION_HEIGHT 9
162 /** For GL_ARB_texture_compression */
163 #define MAX_COMPRESSED_TEXTURE_FORMATS 25
165 /** For GL_EXT_texture_filter_anisotropic */
166 #define MAX_TEXTURE_MAX_ANISOTROPY 16.0
168 /** For GL_EXT_texture_lod_bias (typically MAX_TEXTURE_LEVELS - 1) */
169 #define MAX_TEXTURE_LOD_BIAS 12.0
171 /** For GL_ARB_vertex_program */
173 #define MAX_VERTEX_PROGRAM_ADDRESS_REGS 1
174 #define MAX_VERTEX_PROGRAM_ATTRIBS 16
177 /** For GL_ARB_fragment_program */
179 #define MAX_FRAGMENT_PROGRAM_ADDRESS_REGS 0
182 /** For any program target/extension */
184 #define MAX_PROGRAM_INSTRUCTIONS (16 * 1024)
185 #define MAX_PROGRAM_LOCAL_PARAMS 256 /**< per-program constants (power of two) */
186 #define MAX_PROGRAM_ENV_PARAMS 128
187 #define MAX_PROGRAM_MATRICES 8
188 #define MAX_PROGRAM_MATRIX_STACK_DEPTH 4
189 #define MAX_PROGRAM_CALL_DEPTH 8
190 #define MAX_PROGRAM_TEMPS 128
191 #define MAX_PROGRAM_ADDRESS_REGS 2
192 #define MAX_UNIFORMS 256 /**< number of vec4 uniforms */
193 #define MAX_VARYING 8 /**< number of float[4] vectors */
194 #define MAX_SAMPLERS MAX_TEXTURE_IMAGE_UNITS
195 #define MAX_PROGRAM_INPUTS 32
196 #define MAX_PROGRAM_OUTPUTS 32
199 /** For GL_NV_vertex_program */
201 #define MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS 128
202 #define MAX_NV_VERTEX_PROGRAM_TEMPS 12
203 #define MAX_NV_VERTEX_PROGRAM_PARAMS MAX_PROGRAM_ENV_PARAMS
204 #define MAX_NV_VERTEX_PROGRAM_INPUTS 16
205 #define MAX_NV_VERTEX_PROGRAM_OUTPUTS 15
208 /** For GL_NV_fragment_program */
210 #define MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS 1024 /* 72 for GL_ARB_f_p */
211 #define MAX_NV_FRAGMENT_PROGRAM_TEMPS 96
212 #define MAX_NV_FRAGMENT_PROGRAM_PARAMS 64
213 #define MAX_NV_FRAGMENT_PROGRAM_INPUTS 12
214 #define MAX_NV_FRAGMENT_PROGRAM_OUTPUTS 3
215 #define MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS 2
219 /** For GL_ARB_vertex_shader */
221 #define MAX_VERTEX_ATTRIBS 16
222 #define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
223 #define MAX_COMBINED_TEXTURE_IMAGE_UNITS MAX_TEXTURE_IMAGE_UNITS
227 /** For GL_ARB_draw_buffers */
229 #define MAX_DRAW_BUFFERS 4
233 /** For GL_EXT_framebuffer_object */
235 #define MAX_COLOR_ATTACHMENTS 8
241 * \name Mesa-specific parameters
247 * If non-zero use GLdouble for walking triangle edges, for better accuracy.
249 #define TRIANGLE_WALK_DOUBLE 0
253 * Bits per depth buffer value (max is 32).
255 #ifndef DEFAULT_SOFTWARE_DEPTH_BITS
256 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
258 /** Depth buffer data type */
259 #if DEFAULT_SOFTWARE_DEPTH_BITS <= 16
260 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
262 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLuint
267 * Bits per stencil value: 8
269 #define STENCIL_BITS 8
273 * Bits per color channel: 8, 16 or 32
281 * Color channel component order
283 * \note Changes will almost certainly cause problems at this time.
292 * Maximum number of temporary vertices required for clipping.
294 * Used in array_cache and tnl modules.
296 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
299 #endif /* MESA_CONFIG_H_INCLUDED */