1 /* $Id: config.h,v 1.13 2000/05/07 20:41:30 brianp Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
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10 * copy of this software and associated documentation files (the "Software"),
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14 * Software is furnished to do so, subject to the following conditions:
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19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * Tunable configuration parameters.
43 * OpenGL implementation limits
46 /* Maximum modelview matrix stack depth: */
47 #define MAX_MODELVIEW_STACK_DEPTH 32
49 /* Maximum projection matrix stack depth: */
50 #define MAX_PROJECTION_STACK_DEPTH 32
52 /* Maximum texture matrix stack depth: */
53 #define MAX_TEXTURE_STACK_DEPTH 10
55 /* Maximum color matrix stack depth: */
56 #define MAX_COLOR_STACK_DEPTH 4
58 /* Maximum attribute stack depth: */
59 #define MAX_ATTRIB_STACK_DEPTH 16
61 /* Maximum client attribute stack depth: */
62 #define MAX_CLIENT_ATTRIB_STACK_DEPTH 16
64 /* Maximum recursion depth of display list calls: */
65 #define MAX_LIST_NESTING 64
67 /* Maximum number of lights: */
70 /* Maximum user-defined clipping planes: */
71 #define MAX_CLIP_PLANES 6
73 /* Maximum pixel map lookup table size: */
74 #define MAX_PIXEL_MAP_TABLE 256
76 /* Number of auxillary color buffers: */
77 #define NUM_AUX_BUFFERS 0
79 /* Maximum order (degree) of curves: */
81 # define MAX_EVAL_ORDER 12
83 # define MAX_EVAL_ORDER 30
86 /* Maximum Name stack depth */
87 #define MAX_NAME_STACK_DEPTH 64
89 /* Min and Max point sizes and granularity */
90 #define MIN_POINT_SIZE 1.0
91 #define MAX_POINT_SIZE 10.0
92 #define POINT_SIZE_GRANULARITY 0.1
94 /* Min and Max line widths and granularity */
95 #define MIN_LINE_WIDTH 1.0
96 #define MAX_LINE_WIDTH 10.0
97 #define LINE_WIDTH_GRANULARITY 0.1
99 /* Max texture palette / color table size */
100 #define MAX_COLOR_TABLE_SIZE 256
102 /* Number of texture levels */
103 #define MAX_TEXTURE_LEVELS 12
105 /* Number of texture units - GL_ARB_multitexture */
106 #define MAX_TEXTURE_UNITS 2
108 /* Maximum viewport size: */
109 #define MAX_WIDTH 1600
110 #define MAX_HEIGHT 1200
112 /* Maxmimum size for CVA. May be overridden by the drivers. */
113 #define MAX_ARRAY_LOCK_SIZE 3000
115 /* Subpixel precision for antialiasing, window coordinate snapping */
116 #define SUB_PIXEL_BITS 4
118 /* Size of histogram tables */
119 #define HISTOGRAM_TABLE_SIZE 256
121 /* Max convolution filter sizes */
122 #define MAX_CONVOLUTION_WIDTH 5
123 #define MAX_CONVOLUTION_HEIGHT 5
127 * Mesa-specific parameters
132 * Bits per accumulation buffer color component: 8 or 16
134 #define ACCUM_BITS 16
138 * Bits per depth buffer value: 16 or 32 (GLushort or GLuint)
139 * gl_create_visual() can select any depth in [0, 32].
141 #define DEFAULT_SOFTWARE_DEPTH_BITS 16
142 #define DEFAULT_SOFTWARE_DEPTH_TYPE GLushort
147 * Bits per stencil value: 8
149 #define STENCIL_BITS 8
153 * Bits per color channel (must be 8 at this time!)
156 #define CHAN_MAX ((1 << CHAN_BITS) - 1)
157 #define CHAN_MAXF ((GLfloat) CHAN_MAX)
161 * Color channel component order
162 * (changes will almost certainly cause problems at this time)
171 /* Vertex buffer size. KW: no restrictions on the divisibility of
172 * this number, though things may go better for you if you choose a
177 #define VB_MAX (216 + VB_START)
182 * Actual vertex buffer size.
184 * Arrays must also accomodate new vertices from clipping, and
185 * potential overflow from primitives which don't fit into neatly into
186 * VB_MAX vertices. (This only happens when mixed primitives are
189 #define VB_MAX_CLIPPED_VERTS ((2 * (6 + MAX_CLIP_PLANES))+1)
190 #define VB_SIZE (VB_MAX + VB_MAX_CLIPPED_VERTS)
194 typedef struct gl_context GLcontext
;
197 gl_read_config_file( struct gl_context
*ctx
);
200 gl_register_config_var(const char *name
, void (*notify
)( const char *, int ));