ee5cf50bbc569fadb13f1f4a979445944eed3acf
[reactos.git] / reactos / dll / opengl / mesa / src / mesa / main / mtypes.h
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.7
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 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 mtypes.h
28 * Main Mesa data structures.
29 *
30 * Please try to mark derived values with a leading underscore ('_').
31 */
32
33 #ifndef MTYPES_H
34 #define MTYPES_H
35
36
37 #include "main/glheader.h"
38 #include "main/config.h"
39 #include "main/mfeatures.h"
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
42 #include "main/simple_list.h" /* struct simple_node */
43 #include "main/formats.h" /* MESA_FORMAT_COUNT */
44
45
46 #ifdef __cplusplus
47 extern "C" {
48 #endif
49
50
51 /**
52 * \name 64-bit extension of GLbitfield.
53 */
54 /*@{*/
55 typedef GLuint64 GLbitfield64;
56
57 /** Set a single bit */
58 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
59 /** Set all bits up to excluding bit b */
60 #define BITFIELD64_MASK(b) \
61 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
62 /** Set count bits starting from bit b */
63 #define BITFIELD64_RANGE(b, count) \
64 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
65
66
67 /**
68 * \name Some forward type declarations
69 */
70 /*@{*/
71 struct _mesa_HashTable;
72 struct gl_attrib_node;
73 struct gl_list_extensions;
74 struct gl_meta_state;
75 struct gl_program_cache;
76 struct gl_texture_object;
77 struct gl_context;
78 struct st_context;
79 struct gl_uniform_storage;
80 /*@}*/
81
82
83 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
84 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
85 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
86 #define PRIM_UNKNOWN (GL_POLYGON+3)
87
88
89 /**
90 * Shader stages. Note that these will become 5 with tessellation.
91 * These MUST have the same values as gallium's PIPE_SHADER_*
92 */
93 typedef enum
94 {
95 MESA_SHADER_VERTEX = 0,
96 MESA_SHADER_FRAGMENT = 1,
97 MESA_SHADER_GEOMETRY = 2,
98 MESA_SHADER_TYPES = 3
99 } gl_shader_type;
100
101
102
103 /**
104 * Indexes for vertex program attributes.
105 * GL_NV_vertex_program aliases generic attributes over the conventional
106 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
107 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
108 * generic attributes are distinct/separate).
109 */
110 typedef enum
111 {
112 VERT_ATTRIB_POS = 0,
113 VERT_ATTRIB_WEIGHT = 1,
114 VERT_ATTRIB_NORMAL = 2,
115 VERT_ATTRIB_COLOR0 = 3,
116 VERT_ATTRIB_COLOR1 = 4,
117 VERT_ATTRIB_FOG = 5,
118 VERT_ATTRIB_COLOR_INDEX = 6,
119 VERT_ATTRIB_EDGEFLAG = 7,
120 VERT_ATTRIB_TEX0 = 8,
121 VERT_ATTRIB_TEX1 = 9,
122 VERT_ATTRIB_TEX2 = 10,
123 VERT_ATTRIB_TEX3 = 11,
124 VERT_ATTRIB_TEX4 = 12,
125 VERT_ATTRIB_TEX5 = 13,
126 VERT_ATTRIB_TEX6 = 14,
127 VERT_ATTRIB_TEX7 = 15,
128 VERT_ATTRIB_POINT_SIZE = 16,
129 VERT_ATTRIB_GENERIC0 = 17,
130 VERT_ATTRIB_GENERIC1 = 18,
131 VERT_ATTRIB_GENERIC2 = 19,
132 VERT_ATTRIB_GENERIC3 = 20,
133 VERT_ATTRIB_GENERIC4 = 21,
134 VERT_ATTRIB_GENERIC5 = 22,
135 VERT_ATTRIB_GENERIC6 = 23,
136 VERT_ATTRIB_GENERIC7 = 24,
137 VERT_ATTRIB_GENERIC8 = 25,
138 VERT_ATTRIB_GENERIC9 = 26,
139 VERT_ATTRIB_GENERIC10 = 27,
140 VERT_ATTRIB_GENERIC11 = 28,
141 VERT_ATTRIB_GENERIC12 = 29,
142 VERT_ATTRIB_GENERIC13 = 30,
143 VERT_ATTRIB_GENERIC14 = 31,
144 VERT_ATTRIB_GENERIC15 = 32,
145 VERT_ATTRIB_MAX = 33
146 } gl_vert_attrib;
147
148 /**
149 * Symbolic constats to help iterating over
150 * specific blocks of vertex attributes.
151 *
152 * VERT_ATTRIB_FF
153 * includes all fixed function attributes as well as
154 * the aliased GL_NV_vertex_program shader attributes.
155 * VERT_ATTRIB_TEX
156 * include the classic texture coordinate attributes.
157 * Is a subset of VERT_ATTRIB_FF.
158 * VERT_ATTRIB_GENERIC_NV
159 * include the NV shader attributes.
160 * Is a subset of VERT_ATTRIB_FF.
161 * VERT_ATTRIB_GENERIC
162 * include the OpenGL 2.0+ GLSL generic shader attributes.
163 * These alias the generic GL_ARB_vertex_shader attributes.
164 */
165 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
166 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
167
168 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
169 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
170
171 #define VERT_ATTRIB_GENERIC_NV(i) (VERT_ATTRIB_POS + (i))
172 #define VERT_ATTRIB_GENERIC_NV_MAX MAX_VERTEX_GENERIC_ATTRIBS
173
174 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
175 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
176
177 /**
178 * Bitflags for vertex attributes.
179 * These are used in bitfields in many places.
180 */
181 /*@{*/
182 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
183 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
184 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
185 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
186 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
187 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
188 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
189 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
190 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
191 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
192 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
193 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
194 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
195 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
196 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
197 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
198 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
199 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
200
201 #define VERT_BIT(i) BITFIELD64_BIT(i)
202 #define VERT_BIT_ALL (BITFIELD64_BIT(VERT_ATTRIB_MAX) - 1)
203
204 #define VERT_BIT_FF(i) VERT_BIT(i)
205 #define VERT_BIT_FF_ALL (BITFIELD64_BIT(VERT_ATTRIB_FF_MAX) - 1)
206 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
207 #define VERT_BIT_TEX_ALL \
208 ((BITFIELD64_BIT(VERT_ATTRIB_TEX_MAX) - 1) << VERT_ATTRIB_TEX(0))
209 #define VERT_BIT_GENERIC_NV(i) VERT_BIT(VERT_ATTRIB_GENERIC_NV(i))
210 #define VERT_BIT_GENERIC_NV_ALL \
211 ((BITFIELD64_BIT(VERT_ATTRIB_GENERIC_NV_MAX) - 1) << (VERT_ATTRIB_GENERIC_NV(0)))
212 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
213 #define VERT_BIT_GENERIC_ALL \
214 ((BITFIELD64_BIT(VERT_ATTRIB_GENERIC_MAX) - 1) << (VERT_ATTRIB_GENERIC(0)))
215 /*@}*/
216
217
218 /**
219 * Indexes for vertex program result attributes. Note that
220 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
221 * assumptions about the layout of this enum.
222 */
223 typedef enum
224 {
225 VERT_RESULT_HPOS = 0,
226 VERT_RESULT_COL0 = 1,
227 VERT_RESULT_COL1 = 2,
228 VERT_RESULT_FOGC = 3,
229 VERT_RESULT_TEX0 = 4,
230 VERT_RESULT_TEX1 = 5,
231 VERT_RESULT_TEX2 = 6,
232 VERT_RESULT_TEX3 = 7,
233 VERT_RESULT_TEX4 = 8,
234 VERT_RESULT_TEX5 = 9,
235 VERT_RESULT_TEX6 = 10,
236 VERT_RESULT_TEX7 = 11,
237 VERT_RESULT_PSIZ = 12,
238 VERT_RESULT_BFC0 = 13,
239 VERT_RESULT_BFC1 = 14,
240 VERT_RESULT_EDGE = 15,
241 VERT_RESULT_CLIP_VERTEX = 16,
242 VERT_RESULT_CLIP_DIST0 = 17,
243 VERT_RESULT_CLIP_DIST1 = 18,
244 VERT_RESULT_VAR0 = 19, /**< shader varying */
245 VERT_RESULT_MAX = (VERT_RESULT_VAR0 + MAX_VARYING)
246 } gl_vert_result;
247
248
249 /*********************************************/
250
251 /**
252 * Indexes for geometry program attributes.
253 */
254 typedef enum
255 {
256 GEOM_ATTRIB_POSITION = 0,
257 GEOM_ATTRIB_COLOR0 = 1,
258 GEOM_ATTRIB_COLOR1 = 2,
259 GEOM_ATTRIB_SECONDARY_COLOR0 = 3,
260 GEOM_ATTRIB_SECONDARY_COLOR1 = 4,
261 GEOM_ATTRIB_FOG_FRAG_COORD = 5,
262 GEOM_ATTRIB_POINT_SIZE = 6,
263 GEOM_ATTRIB_CLIP_VERTEX = 7,
264 GEOM_ATTRIB_PRIMITIVE_ID = 8,
265 GEOM_ATTRIB_TEX_COORD = 9,
266
267 GEOM_ATTRIB_VAR0 = 16,
268 GEOM_ATTRIB_MAX = (GEOM_ATTRIB_VAR0 + MAX_VARYING)
269 } gl_geom_attrib;
270
271 /**
272 * Bitflags for geometry attributes.
273 * These are used in bitfields in many places.
274 */
275 /*@{*/
276 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
277 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
278 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
279 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
280 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
281 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
282 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
283 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
284 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
285 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
286 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
287
288 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
289 /*@}*/
290
291
292 /**
293 * Indexes for geometry program result attributes
294 */
295 typedef enum
296 {
297 GEOM_RESULT_POS = 0,
298 GEOM_RESULT_COL0 = 1,
299 GEOM_RESULT_COL1 = 2,
300 GEOM_RESULT_SCOL0 = 3,
301 GEOM_RESULT_SCOL1 = 4,
302 GEOM_RESULT_FOGC = 5,
303 GEOM_RESULT_TEX0 = 6,
304 GEOM_RESULT_TEX1 = 7,
305 GEOM_RESULT_TEX2 = 8,
306 GEOM_RESULT_TEX3 = 9,
307 GEOM_RESULT_TEX4 = 10,
308 GEOM_RESULT_TEX5 = 11,
309 GEOM_RESULT_TEX6 = 12,
310 GEOM_RESULT_TEX7 = 13,
311 GEOM_RESULT_PSIZ = 14,
312 GEOM_RESULT_CLPV = 15,
313 GEOM_RESULT_PRID = 16,
314 GEOM_RESULT_LAYR = 17,
315 GEOM_RESULT_VAR0 = 18, /**< shader varying, should really be 16 */
316 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
317 GEOM_RESULT_MAX = (GEOM_RESULT_VAR0 + MAX_VARYING - 2)
318 } gl_geom_result;
319
320
321 /**
322 * Indexes for fragment program input attributes. Note that
323 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
324 * assumptions about the layout of this enum.
325 */
326 typedef enum
327 {
328 FRAG_ATTRIB_WPOS = 0,
329 FRAG_ATTRIB_COL0 = 1,
330 FRAG_ATTRIB_COL1 = 2,
331 FRAG_ATTRIB_FOGC = 3,
332 FRAG_ATTRIB_TEX0 = 4,
333 FRAG_ATTRIB_TEX1 = 5,
334 FRAG_ATTRIB_TEX2 = 6,
335 FRAG_ATTRIB_TEX3 = 7,
336 FRAG_ATTRIB_TEX4 = 8,
337 FRAG_ATTRIB_TEX5 = 9,
338 FRAG_ATTRIB_TEX6 = 10,
339 FRAG_ATTRIB_TEX7 = 11,
340 FRAG_ATTRIB_FACE = 12, /**< front/back face */
341 FRAG_ATTRIB_PNTC = 13, /**< sprite/point coord */
342 FRAG_ATTRIB_CLIP_DIST0 = 14,
343 FRAG_ATTRIB_CLIP_DIST1 = 15,
344 FRAG_ATTRIB_VAR0 = 16, /**< shader varying */
345 FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
346 } gl_frag_attrib;
347
348
349 /**
350 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
351 *
352 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
353 *
354 * gl_vert_result values which have no corresponding gl_frag_attrib
355 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
356 * VERT_RESULT_EDGE) are converted to a value of -1.
357 */
358 static inline int
359 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result)
360 {
361 if (vert_result >= VERT_RESULT_CLIP_DIST0)
362 return vert_result - VERT_RESULT_CLIP_DIST0 + FRAG_ATTRIB_CLIP_DIST0;
363 else if (vert_result <= VERT_RESULT_TEX7)
364 return vert_result;
365 else
366 return -1;
367 }
368
369
370 /**
371 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
372 *
373 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
374 *
375 * gl_frag_attrib values which have no corresponding gl_vert_result
376 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
377 */
378 static inline int
379 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib)
380 {
381 if (frag_attrib <= FRAG_ATTRIB_TEX7)
382 return frag_attrib;
383 else if (frag_attrib >= FRAG_ATTRIB_CLIP_DIST0)
384 return frag_attrib - FRAG_ATTRIB_CLIP_DIST0 + VERT_RESULT_CLIP_DIST0;
385 else
386 return -1;
387 }
388
389
390 /**
391 * Bitflags for fragment program input attributes.
392 */
393 /*@{*/
394 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
395 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
396 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
397 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
398 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
399 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
400 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
401 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
402 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
403 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
404 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
405 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
406 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
407 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
408 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
409
410 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
411 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
412
413 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
414 FRAG_BIT_TEX1| \
415 FRAG_BIT_TEX2| \
416 FRAG_BIT_TEX3| \
417 FRAG_BIT_TEX4| \
418 FRAG_BIT_TEX5| \
419 FRAG_BIT_TEX6| \
420 FRAG_BIT_TEX7)
421 /*@}*/
422
423
424 /**
425 * Fragment program results
426 */
427 typedef enum
428 {
429 FRAG_RESULT_DEPTH = 0,
430 FRAG_RESULT_STENCIL = 1,
431 /* If a single color should be written to all render targets, this
432 * register is written. No FRAG_RESULT_DATAn will be written.
433 */
434 FRAG_RESULT_COLOR = 2,
435
436 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
437 * or ARB_fragment_program fragment.color[n]) color results. If
438 * any are written, FRAG_RESULT_COLOR will not be written.
439 */
440 FRAG_RESULT_DATA0 = 3,
441 FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
442 } gl_frag_result;
443
444
445 /**
446 * Indexes for all renderbuffers
447 */
448 typedef enum
449 {
450 /* the four standard color buffers */
451 BUFFER_FRONT_LEFT,
452 BUFFER_BACK_LEFT,
453 BUFFER_FRONT_RIGHT,
454 BUFFER_BACK_RIGHT,
455 BUFFER_DEPTH,
456 BUFFER_STENCIL,
457 BUFFER_ACCUM,
458 /* optional aux buffer */
459 BUFFER_AUX0,
460 /* generic renderbuffers */
461 BUFFER_COLOR0,
462 BUFFER_COLOR1,
463 BUFFER_COLOR2,
464 BUFFER_COLOR3,
465 BUFFER_COLOR4,
466 BUFFER_COLOR5,
467 BUFFER_COLOR6,
468 BUFFER_COLOR7,
469 BUFFER_COUNT
470 } gl_buffer_index;
471
472 /**
473 * Bit flags for all renderbuffers
474 */
475 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
476 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
477 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
478 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
479 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
480 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
481 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
482 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
483 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
484 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
485 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
486 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
487 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
488 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
489 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
490 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
491 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
492 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
493 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
494
495 /**
496 * Mask of all the color buffer bits (but not accum).
497 */
498 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
499 BUFFER_BIT_BACK_LEFT | \
500 BUFFER_BIT_FRONT_RIGHT | \
501 BUFFER_BIT_BACK_RIGHT | \
502 BUFFER_BIT_AUX0 | \
503 BUFFER_BIT_COLOR0 | \
504 BUFFER_BIT_COLOR1 | \
505 BUFFER_BIT_COLOR2 | \
506 BUFFER_BIT_COLOR3 | \
507 BUFFER_BIT_COLOR4 | \
508 BUFFER_BIT_COLOR5 | \
509 BUFFER_BIT_COLOR6 | \
510 BUFFER_BIT_COLOR7)
511
512
513 /**
514 * Framebuffer configuration (aka visual / pixelformat)
515 * Note: some of these fields should be boolean, but it appears that
516 * code in drivers/dri/common/util.c requires int-sized fields.
517 */
518 struct gl_config
519 {
520 GLboolean rgbMode;
521 GLboolean floatMode;
522 GLboolean colorIndexMode; /* XXX is this used anywhere? */
523 GLuint doubleBufferMode;
524 GLuint stereoMode;
525
526 GLboolean haveAccumBuffer;
527 GLboolean haveDepthBuffer;
528 GLboolean haveStencilBuffer;
529
530 GLint redBits, greenBits, blueBits, alphaBits; /* bits per comp */
531 GLuint redMask, greenMask, blueMask, alphaMask;
532 GLint rgbBits; /* total bits for rgb */
533 GLint indexBits; /* total bits for colorindex */
534
535 GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
536 GLint depthBits;
537 GLint stencilBits;
538
539 GLint numAuxBuffers;
540
541 GLint level;
542
543 /* EXT_visual_rating / GLX 1.2 */
544 GLint visualRating;
545
546 /* EXT_visual_info / GLX 1.2 */
547 GLint transparentPixel;
548 /* colors are floats scaled to ints */
549 GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;
550 GLint transparentIndex;
551
552 /* ARB_multisample / SGIS_multisample */
553 GLint sampleBuffers;
554 GLint samples;
555
556 /* SGIX_pbuffer / GLX 1.3 */
557 GLint maxPbufferWidth;
558 GLint maxPbufferHeight;
559 GLint maxPbufferPixels;
560 GLint optimalPbufferWidth; /* Only for SGIX_pbuffer. */
561 GLint optimalPbufferHeight; /* Only for SGIX_pbuffer. */
562
563 /* OML_swap_method */
564 GLint swapMethod;
565
566 /* EXT_texture_from_pixmap */
567 GLint bindToTextureRgb;
568 GLint bindToTextureRgba;
569 GLint bindToMipmapTexture;
570 GLint bindToTextureTargets;
571 GLint yInverted;
572
573 /* EXT_framebuffer_sRGB */
574 GLint sRGBCapable;
575 };
576
577
578 /**
579 * \name Bit flags used for updating material values.
580 */
581 /*@{*/
582 #define MAT_ATTRIB_FRONT_AMBIENT 0
583 #define MAT_ATTRIB_BACK_AMBIENT 1
584 #define MAT_ATTRIB_FRONT_DIFFUSE 2
585 #define MAT_ATTRIB_BACK_DIFFUSE 3
586 #define MAT_ATTRIB_FRONT_SPECULAR 4
587 #define MAT_ATTRIB_BACK_SPECULAR 5
588 #define MAT_ATTRIB_FRONT_EMISSION 6
589 #define MAT_ATTRIB_BACK_EMISSION 7
590 #define MAT_ATTRIB_FRONT_SHININESS 8
591 #define MAT_ATTRIB_BACK_SHININESS 9
592 #define MAT_ATTRIB_FRONT_INDEXES 10
593 #define MAT_ATTRIB_BACK_INDEXES 11
594 #define MAT_ATTRIB_MAX 12
595
596 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
597 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
598 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
599 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
600 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
601 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
602
603 #define MAT_INDEX_AMBIENT 0
604 #define MAT_INDEX_DIFFUSE 1
605 #define MAT_INDEX_SPECULAR 2
606
607 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
608 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
609 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
610 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
611 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
612 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
613 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
614 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
615 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
616 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
617 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
618 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
619
620
621 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
622 MAT_BIT_FRONT_AMBIENT | \
623 MAT_BIT_FRONT_DIFFUSE | \
624 MAT_BIT_FRONT_SPECULAR | \
625 MAT_BIT_FRONT_SHININESS | \
626 MAT_BIT_FRONT_INDEXES)
627
628 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
629 MAT_BIT_BACK_AMBIENT | \
630 MAT_BIT_BACK_DIFFUSE | \
631 MAT_BIT_BACK_SPECULAR | \
632 MAT_BIT_BACK_SHININESS | \
633 MAT_BIT_BACK_INDEXES)
634
635 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
636 /*@}*/
637
638
639 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
640 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
641
642 /**
643 * Material shininess lookup table.
644 */
645 struct gl_shine_tab
646 {
647 struct gl_shine_tab *next, *prev;
648 GLfloat tab[SHINE_TABLE_SIZE+1];
649 GLfloat shininess;
650 GLuint refcount;
651 };
652
653
654 /**
655 * Light source state.
656 */
657 struct gl_light
658 {
659 struct gl_light *next; /**< double linked list with sentinel */
660 struct gl_light *prev;
661
662 GLfloat Ambient[4]; /**< ambient color */
663 GLfloat Diffuse[4]; /**< diffuse color */
664 GLfloat Specular[4]; /**< specular color */
665 GLfloat EyePosition[4]; /**< position in eye coordinates */
666 GLfloat SpotDirection[4]; /**< spotlight direction in eye coordinates */
667 GLfloat SpotExponent;
668 GLfloat SpotCutoff; /**< in degrees */
669 GLfloat _CosCutoffNeg; /**< = cos(SpotCutoff) */
670 GLfloat _CosCutoff; /**< = MAX(0, cos(SpotCutoff)) */
671 GLfloat ConstantAttenuation;
672 GLfloat LinearAttenuation;
673 GLfloat QuadraticAttenuation;
674 GLboolean Enabled; /**< On/off flag */
675
676 /**
677 * \name Derived fields
678 */
679 /*@{*/
680 GLbitfield _Flags; /**< State */
681
682 GLfloat _Position[4]; /**< position in eye/obj coordinates */
683 GLfloat _VP_inf_norm[3]; /**< Norm direction to infinite light */
684 GLfloat _h_inf_norm[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
685 GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */
686 GLfloat _VP_inf_spot_attenuation;
687
688 GLfloat _SpotExpTable[EXP_TABLE_SIZE][2]; /**< to replace a pow() call */
689 GLfloat _MatAmbient[2][3]; /**< material ambient * light ambient */
690 GLfloat _MatDiffuse[2][3]; /**< material diffuse * light diffuse */
691 GLfloat _MatSpecular[2][3]; /**< material spec * light specular */
692 /*@}*/
693 };
694
695
696 /**
697 * Light model state.
698 */
699 struct gl_lightmodel
700 {
701 GLfloat Ambient[4]; /**< ambient color */
702 GLboolean LocalViewer; /**< Local (or infinite) view point? */
703 GLboolean TwoSide; /**< Two (or one) sided lighting? */
704 GLenum ColorControl; /**< either GL_SINGLE_COLOR
705 * or GL_SEPARATE_SPECULAR_COLOR */
706 };
707
708
709 /**
710 * Material state.
711 */
712 struct gl_material
713 {
714 GLfloat Attrib[MAT_ATTRIB_MAX][4];
715 };
716
717
718 /**
719 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
720 */
721 struct gl_accum_attrib
722 {
723 GLfloat ClearColor[4]; /**< Accumulation buffer clear color */
724 };
725
726
727 /**
728 * Used for storing clear color, texture border color, etc.
729 * The float values are typically unclamped.
730 */
731 union gl_color_union
732 {
733 GLfloat f[4];
734 GLint i[4];
735 GLuint ui[4];
736 };
737
738
739 /**
740 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
741 */
742 struct gl_colorbuffer_attrib
743 {
744 GLuint ClearIndex; /**< Index for glClear */
745 union gl_color_union ClearColor; /**< Color for glClear, unclamped */
746 GLuint IndexMask; /**< Color index write mask */
747 GLubyte ColorMask[MAX_DRAW_BUFFERS][4]; /**< Each flag is 0xff or 0x0 */
748
749 GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */
750
751 /**
752 * \name alpha testing
753 */
754 /*@{*/
755 GLboolean AlphaEnabled; /**< Alpha test enabled flag */
756 GLenum AlphaFunc; /**< Alpha test function */
757 GLfloat AlphaRefUnclamped;
758 GLclampf AlphaRef; /**< Alpha reference value */
759 /*@}*/
760
761 /**
762 * \name Blending
763 */
764 /*@{*/
765 GLbitfield BlendEnabled; /**< Per-buffer blend enable flags */
766
767 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
768 * control, only on the fixed-pointness of the render target.
769 * The query does however depend on fragment color clamping.
770 */
771 GLfloat BlendColorUnclamped[4]; /**< Blending color */
772 GLfloat BlendColor[4]; /**< Blending color */
773
774 struct
775 {
776 GLenum SrcRGB; /**< RGB blend source term */
777 GLenum DstRGB; /**< RGB blend dest term */
778 GLenum SrcA; /**< Alpha blend source term */
779 GLenum DstA; /**< Alpha blend dest term */
780 GLenum EquationRGB; /**< GL_ADD, GL_SUBTRACT, etc. */
781 GLenum EquationA; /**< GL_ADD, GL_SUBTRACT, etc. */
782 } Blend[MAX_DRAW_BUFFERS];
783 /** Are the blend func terms currently different for each buffer/target? */
784 GLboolean _BlendFuncPerBuffer;
785 /** Are the blend equations currently different for each buffer/target? */
786 GLboolean _BlendEquationPerBuffer;
787 /*@}*/
788
789 /**
790 * \name Logic op
791 */
792 /*@{*/
793 GLenum LogicOp; /**< Logic operator */
794 GLboolean IndexLogicOpEnabled; /**< Color index logic op enabled flag */
795 GLboolean ColorLogicOpEnabled; /**< RGBA logic op enabled flag */
796 /*@}*/
797
798 GLboolean DitherFlag; /**< Dither enable flag */
799
800 GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
801 GLboolean _ClampFragmentColor; /** < with GL_FIXED_ONLY_ARB resolved */
802 GLenum ClampReadColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
803 GLboolean _ClampReadColor; /** < with GL_FIXED_ONLY_ARB resolved */
804
805 GLboolean sRGBEnabled; /**< Framebuffer sRGB blending/updating requested */
806 };
807
808
809 /**
810 * Current attribute group (GL_CURRENT_BIT).
811 */
812 struct gl_current_attrib
813 {
814 /**
815 * \name Current vertex attributes.
816 * \note Values are valid only after FLUSH_VERTICES has been called.
817 * \note Index and Edgeflag current values are stored as floats in the
818 * SIX and SEVEN attribute slots.
819 */
820 GLfloat Attrib[VERT_ATTRIB_MAX][4]; /**< Position, color, texcoords, etc */
821
822 /**
823 * \name Current raster position attributes (always valid).
824 * \note This set of attributes is very similar to the SWvertex struct.
825 */
826 /*@{*/
827 GLfloat RasterPos[4];
828 GLfloat RasterDistance;
829 GLfloat RasterColor[4];
830 GLfloat RasterSecondaryColor[4];
831 GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];
832 GLboolean RasterPosValid;
833 /*@}*/
834 };
835
836
837 /**
838 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
839 */
840 struct gl_depthbuffer_attrib
841 {
842 GLenum Func; /**< Function for depth buffer compare */
843 GLclampd Clear; /**< Value to clear depth buffer to */
844 GLboolean Test; /**< Depth buffering enabled flag */
845 GLboolean Mask; /**< Depth buffer writable? */
846 GLboolean BoundsTest; /**< GL_EXT_depth_bounds_test */
847 GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
848 };
849
850
851 /**
852 * Evaluator attribute group (GL_EVAL_BIT).
853 */
854 struct gl_eval_attrib
855 {
856 /**
857 * \name Enable bits
858 */
859 /*@{*/
860 GLboolean Map1Color4;
861 GLboolean Map1Index;
862 GLboolean Map1Normal;
863 GLboolean Map1TextureCoord1;
864 GLboolean Map1TextureCoord2;
865 GLboolean Map1TextureCoord3;
866 GLboolean Map1TextureCoord4;
867 GLboolean Map1Vertex3;
868 GLboolean Map1Vertex4;
869 GLboolean Map1Attrib[16]; /* GL_NV_vertex_program */
870 GLboolean Map2Color4;
871 GLboolean Map2Index;
872 GLboolean Map2Normal;
873 GLboolean Map2TextureCoord1;
874 GLboolean Map2TextureCoord2;
875 GLboolean Map2TextureCoord3;
876 GLboolean Map2TextureCoord4;
877 GLboolean Map2Vertex3;
878 GLboolean Map2Vertex4;
879 GLboolean Map2Attrib[16]; /* GL_NV_vertex_program */
880 GLboolean AutoNormal;
881 /*@}*/
882
883 /**
884 * \name Map Grid endpoints and divisions and calculated du values
885 */
886 /*@{*/
887 GLint MapGrid1un;
888 GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
889 GLint MapGrid2un, MapGrid2vn;
890 GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
891 GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
892 /*@}*/
893 };
894
895
896 /**
897 * Fog attribute group (GL_FOG_BIT).
898 */
899 struct gl_fog_attrib
900 {
901 GLboolean Enabled; /**< Fog enabled flag */
902 GLfloat ColorUnclamped[4]; /**< Fog color */
903 GLfloat Color[4]; /**< Fog color */
904 GLfloat Density; /**< Density >= 0.0 */
905 GLfloat Start; /**< Start distance in eye coords */
906 GLfloat End; /**< End distance in eye coords */
907 GLfloat Index; /**< Fog index */
908 GLenum Mode; /**< Fog mode */
909 GLboolean ColorSumEnabled;
910 GLenum FogCoordinateSource; /**< GL_EXT_fog_coord */
911 GLfloat _Scale; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
912 GLenum FogDistanceMode; /**< GL_NV_fog_distance */
913 };
914
915
916 /**
917 * \brief Layout qualifiers for gl_FragDepth.
918 *
919 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
920 * a layout qualifier.
921 *
922 * \see enum ir_depth_layout
923 */
924 enum gl_frag_depth_layout {
925 FRAG_DEPTH_LAYOUT_NONE, /**< No layout is specified. */
926 FRAG_DEPTH_LAYOUT_ANY,
927 FRAG_DEPTH_LAYOUT_GREATER,
928 FRAG_DEPTH_LAYOUT_LESS,
929 FRAG_DEPTH_LAYOUT_UNCHANGED
930 };
931
932
933 /**
934 * Hint attribute group (GL_HINT_BIT).
935 *
936 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
937 */
938 struct gl_hint_attrib
939 {
940 GLenum PerspectiveCorrection;
941 GLenum PointSmooth;
942 GLenum LineSmooth;
943 GLenum PolygonSmooth;
944 GLenum Fog;
945 GLenum ClipVolumeClipping; /**< GL_EXT_clip_volume_hint */
946 GLenum TextureCompression; /**< GL_ARB_texture_compression */
947 GLenum GenerateMipmap; /**< GL_SGIS_generate_mipmap */
948 GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */
949 };
950
951 /**
952 * Light state flags.
953 */
954 /*@{*/
955 #define LIGHT_SPOT 0x1
956 #define LIGHT_LOCAL_VIEWER 0x2
957 #define LIGHT_POSITIONAL 0x4
958 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
959 /*@}*/
960
961
962 /**
963 * Lighting attribute group (GL_LIGHT_BIT).
964 */
965 struct gl_light_attrib
966 {
967 struct gl_light Light[MAX_LIGHTS]; /**< Array of light sources */
968 struct gl_lightmodel Model; /**< Lighting model */
969
970 /**
971 * Must flush FLUSH_VERTICES before referencing:
972 */
973 /*@{*/
974 struct gl_material Material; /**< Includes front & back values */
975 /*@}*/
976
977 GLboolean Enabled; /**< Lighting enabled flag */
978 GLenum ShadeModel; /**< GL_FLAT or GL_SMOOTH */
979 GLenum ProvokingVertex; /**< GL_EXT_provoking_vertex */
980 GLenum ColorMaterialFace; /**< GL_FRONT, BACK or FRONT_AND_BACK */
981 GLenum ColorMaterialMode; /**< GL_AMBIENT, GL_DIFFUSE, etc */
982 GLbitfield ColorMaterialBitmask; /**< bitmask formed from Face and Mode */
983 GLboolean ColorMaterialEnabled;
984 GLenum ClampVertexColor;
985 GLboolean _ClampVertexColor;
986
987 struct gl_light EnabledList; /**< List sentinel */
988
989 /**
990 * Derived state for optimizations:
991 */
992 /*@{*/
993 GLboolean _NeedEyeCoords;
994 GLboolean _NeedVertices; /**< Use fast shader? */
995 GLbitfield _Flags; /**< LIGHT_* flags, see above */
996 GLfloat _BaseColor[2][3];
997 /*@}*/
998 };
999
1000
1001 /**
1002 * Line attribute group (GL_LINE_BIT).
1003 */
1004 struct gl_line_attrib
1005 {
1006 GLboolean SmoothFlag; /**< GL_LINE_SMOOTH enabled? */
1007 GLboolean StippleFlag; /**< GL_LINE_STIPPLE enabled? */
1008 GLushort StipplePattern; /**< Stipple pattern */
1009 GLint StippleFactor; /**< Stipple repeat factor */
1010 GLfloat Width; /**< Line width */
1011 };
1012
1013
1014 /**
1015 * Display list attribute group (GL_LIST_BIT).
1016 */
1017 struct gl_list_attrib
1018 {
1019 GLuint ListBase;
1020 };
1021
1022
1023 /**
1024 * Multisample attribute group (GL_MULTISAMPLE_BIT).
1025 */
1026 struct gl_multisample_attrib
1027 {
1028 GLboolean Enabled;
1029 GLboolean _Enabled; /**< true if Enabled and multisample buffer */
1030 GLboolean SampleAlphaToCoverage;
1031 GLboolean SampleAlphaToOne;
1032 GLboolean SampleCoverage;
1033 GLfloat SampleCoverageValue;
1034 GLboolean SampleCoverageInvert;
1035 };
1036
1037
1038 /**
1039 * A pixelmap (see glPixelMap)
1040 */
1041 struct gl_pixelmap
1042 {
1043 GLint Size;
1044 GLfloat Map[MAX_PIXEL_MAP_TABLE];
1045 GLubyte Map8[MAX_PIXEL_MAP_TABLE]; /**< converted to 8-bit color */
1046 };
1047
1048
1049 /**
1050 * Collection of all pixelmaps
1051 */
1052 struct gl_pixelmaps
1053 {
1054 struct gl_pixelmap RtoR; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1055 struct gl_pixelmap GtoG;
1056 struct gl_pixelmap BtoB;
1057 struct gl_pixelmap AtoA;
1058 struct gl_pixelmap ItoR;
1059 struct gl_pixelmap ItoG;
1060 struct gl_pixelmap ItoB;
1061 struct gl_pixelmap ItoA;
1062 struct gl_pixelmap ItoI;
1063 struct gl_pixelmap StoS;
1064 };
1065
1066
1067 /**
1068 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1069 */
1070 struct gl_pixel_attrib
1071 {
1072 GLenum ReadBuffer; /**< source buffer for glRead/CopyPixels() */
1073
1074 /*--- Begin Pixel Transfer State ---*/
1075 /* Fields are in the order in which they're applied... */
1076
1077 /** Scale & Bias (index shift, offset) */
1078 /*@{*/
1079 GLfloat RedBias, RedScale;
1080 GLfloat GreenBias, GreenScale;
1081 GLfloat BlueBias, BlueScale;
1082 GLfloat AlphaBias, AlphaScale;
1083 GLfloat DepthBias, DepthScale;
1084 GLint IndexShift, IndexOffset;
1085 /*@}*/
1086
1087 /* Pixel Maps */
1088 /* Note: actual pixel maps are not part of this attrib group */
1089 GLboolean MapColorFlag;
1090 GLboolean MapStencilFlag;
1091
1092 /*--- End Pixel Transfer State ---*/
1093
1094 /** glPixelZoom */
1095 GLfloat ZoomX, ZoomY;
1096 };
1097
1098
1099 /**
1100 * Point attribute group (GL_POINT_BIT).
1101 */
1102 struct gl_point_attrib
1103 {
1104 GLboolean SmoothFlag; /**< True if GL_POINT_SMOOTH is enabled */
1105 GLfloat Size; /**< User-specified point size */
1106 GLfloat Params[3]; /**< GL_EXT_point_parameters */
1107 GLfloat MinSize, MaxSize; /**< GL_EXT_point_parameters */
1108 GLfloat Threshold; /**< GL_EXT_point_parameters */
1109 GLboolean _Attenuated; /**< True if Params != [1, 0, 0] */
1110 GLboolean PointSprite; /**< GL_NV/ARB_point_sprite */
1111 GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/
1112 GLenum SpriteRMode; /**< GL_NV_point_sprite (only!) */
1113 GLenum SpriteOrigin; /**< GL_ARB_point_sprite */
1114 };
1115
1116
1117 /**
1118 * Polygon attribute group (GL_POLYGON_BIT).
1119 */
1120 struct gl_polygon_attrib
1121 {
1122 GLenum FrontFace; /**< Either GL_CW or GL_CCW */
1123 GLenum FrontMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
1124 GLenum BackMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
1125 GLboolean _FrontBit; /**< 0=GL_CCW, 1=GL_CW */
1126 GLboolean CullFlag; /**< Culling on/off flag */
1127 GLboolean SmoothFlag; /**< True if GL_POLYGON_SMOOTH is enabled */
1128 GLboolean StippleFlag; /**< True if GL_POLYGON_STIPPLE is enabled */
1129 GLenum CullFaceMode; /**< Culling mode GL_FRONT or GL_BACK */
1130 GLfloat OffsetFactor; /**< Polygon offset factor, from user */
1131 GLfloat OffsetUnits; /**< Polygon offset units, from user */
1132 GLboolean OffsetPoint; /**< Offset in GL_POINT mode */
1133 GLboolean OffsetLine; /**< Offset in GL_LINE mode */
1134 GLboolean OffsetFill; /**< Offset in GL_FILL mode */
1135 };
1136
1137
1138 /**
1139 * Scissor attributes (GL_SCISSOR_BIT).
1140 */
1141 struct gl_scissor_attrib
1142 {
1143 GLboolean Enabled; /**< Scissor test enabled? */
1144 GLint X, Y; /**< Lower left corner of box */
1145 GLsizei Width, Height; /**< Size of box */
1146 };
1147
1148
1149 /**
1150 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1151 *
1152 * Three sets of stencil data are tracked so that OpenGL 2.0,
1153 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1154 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1155 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1156 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1157 * GL_EXT_stencil_two_side GL_BACK state.
1158 *
1159 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1160 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1161 *
1162 * The derived value \c _TestTwoSide is set when the front-face and back-face
1163 * stencil state are different.
1164 */
1165 struct gl_stencil_attrib
1166 {
1167 GLboolean Enabled; /**< Enabled flag */
1168 GLboolean TestTwoSide; /**< GL_EXT_stencil_two_side */
1169 GLubyte ActiveFace; /**< GL_EXT_stencil_two_side (0 or 2) */
1170 GLboolean _Enabled; /**< Enabled and stencil buffer present */
1171 GLboolean _TestTwoSide;
1172 GLubyte _BackFace; /**< Current back stencil state (1 or 2) */
1173 GLenum Function[3]; /**< Stencil function */
1174 GLenum FailFunc[3]; /**< Fail function */
1175 GLenum ZPassFunc[3]; /**< Depth buffer pass function */
1176 GLenum ZFailFunc[3]; /**< Depth buffer fail function */
1177 GLint Ref[3]; /**< Reference value */
1178 GLuint ValueMask[3]; /**< Value mask */
1179 GLuint WriteMask[3]; /**< Write mask */
1180 GLuint Clear; /**< Clear value */
1181 };
1182
1183
1184 /**
1185 * An index for each type of texture object. These correspond to the GL
1186 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1187 * Note: the order is from highest priority to lowest priority.
1188 */
1189 typedef enum
1190 {
1191 TEXTURE_BUFFER_INDEX,
1192 TEXTURE_2D_ARRAY_INDEX,
1193 TEXTURE_1D_ARRAY_INDEX,
1194 TEXTURE_EXTERNAL_INDEX,
1195 TEXTURE_CUBE_INDEX,
1196 TEXTURE_3D_INDEX,
1197 TEXTURE_RECT_INDEX,
1198 TEXTURE_2D_INDEX,
1199 TEXTURE_1D_INDEX,
1200 NUM_TEXTURE_TARGETS
1201 } gl_texture_index;
1202
1203
1204 /**
1205 * Bit flags for each type of texture object
1206 * Used for Texture.Unit[]._ReallyEnabled flags.
1207 */
1208 /*@{*/
1209 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1210 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1211 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1212 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1213 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1214 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1215 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1216 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1217 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1218 /*@}*/
1219
1220
1221 /**
1222 * TexGenEnabled flags.
1223 */
1224 /*@{*/
1225 #define S_BIT 1
1226 #define T_BIT 2
1227 #define R_BIT 4
1228 #define Q_BIT 8
1229 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1230 /*@}*/
1231
1232
1233 /**
1234 * Bit flag versions of the corresponding GL_ constants.
1235 */
1236 /*@{*/
1237 #define TEXGEN_SPHERE_MAP 0x1
1238 #define TEXGEN_OBJ_LINEAR 0x2
1239 #define TEXGEN_EYE_LINEAR 0x4
1240 #define TEXGEN_REFLECTION_MAP_NV 0x8
1241 #define TEXGEN_NORMAL_MAP_NV 0x10
1242
1243 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1244 TEXGEN_REFLECTION_MAP_NV | \
1245 TEXGEN_NORMAL_MAP_NV)
1246 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1247 TEXGEN_REFLECTION_MAP_NV | \
1248 TEXGEN_NORMAL_MAP_NV | \
1249 TEXGEN_EYE_LINEAR)
1250 /*@}*/
1251
1252
1253
1254 /** Tex-gen enabled for texture unit? */
1255 #define ENABLE_TEXGEN(unit) (1 << (unit))
1256
1257 /** Non-identity texture matrix for texture unit? */
1258 #define ENABLE_TEXMAT(unit) (1 << (unit))
1259
1260
1261 /**
1262 * Texture image state. Drivers will typically create a subclass of this
1263 * with extra fields for memory buffers, etc.
1264 */
1265 struct gl_texture_image
1266 {
1267 GLint InternalFormat; /**< Internal format as given by the user */
1268 GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1269 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1270 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1271 * GL_DEPTH_STENCIL_EXT only. Used for
1272 * choosing TexEnv arithmetic.
1273 */
1274 gl_format TexFormat; /**< The actual texture memory format */
1275
1276 GLuint Border; /**< 0 or 1 */
1277 GLuint Width; /**< = 2^WidthLog2 + 2*Border */
1278 GLuint Height; /**< = 2^HeightLog2 + 2*Border */
1279 GLuint Depth; /**< = 2^DepthLog2 + 2*Border */
1280 GLuint Width2; /**< = Width - 2*Border */
1281 GLuint Height2; /**< = Height - 2*Border */
1282 GLuint Depth2; /**< = Depth - 2*Border */
1283 GLuint WidthLog2; /**< = log2(Width2) */
1284 GLuint HeightLog2; /**< = log2(Height2) */
1285 GLuint DepthLog2; /**< = log2(Depth2) */
1286 GLuint MaxLog2; /**< = MAX(WidthLog2, HeightLog2) */
1287
1288 struct gl_texture_object *TexObject; /**< Pointer back to parent object */
1289 GLuint Level; /**< Which mipmap level am I? */
1290 /** Cube map face: index into gl_texture_object::Image[] array */
1291 GLuint Face;
1292 };
1293
1294
1295 /**
1296 * Indexes for cube map faces.
1297 */
1298 typedef enum
1299 {
1300 FACE_POS_X = 0,
1301 FACE_NEG_X = 1,
1302 FACE_POS_Y = 2,
1303 FACE_NEG_Y = 3,
1304 FACE_POS_Z = 4,
1305 FACE_NEG_Z = 5,
1306 MAX_FACES = 6
1307 } gl_face_index;
1308
1309 /**
1310 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1311 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1312 */
1313 struct gl_sampler_object
1314 {
1315 GLuint Name;
1316 GLint RefCount;
1317
1318 GLenum WrapS; /**< S-axis texture image wrap mode */
1319 GLenum WrapT; /**< T-axis texture image wrap mode */
1320 GLenum WrapR; /**< R-axis texture image wrap mode */
1321 GLenum MinFilter; /**< minification filter */
1322 GLenum MagFilter; /**< magnification filter */
1323 union gl_color_union BorderColor; /**< Interpreted according to texture format */
1324 GLfloat MinLod; /**< min lambda, OpenGL 1.2 */
1325 GLfloat MaxLod; /**< max lambda, OpenGL 1.2 */
1326 GLfloat LodBias; /**< OpenGL 1.4 */
1327 GLfloat MaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
1328 GLboolean CubeMapSeamless; /**< GL_AMD_seamless_cubemap_per_texture */
1329
1330 };
1331
1332
1333 /**
1334 * Texture object state. Contains the array of mipmap images, border color,
1335 * wrap modes, filter modes, and shadow/texcompare state.
1336 */
1337 struct gl_texture_object
1338 {
1339 _glthread_Mutex Mutex; /**< for thread safety */
1340 GLint RefCount; /**< reference count */
1341 GLuint Name; /**< the user-visible texture object ID */
1342 GLenum Target; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1343
1344 struct gl_sampler_object Sampler;
1345
1346 GLfloat Priority; /**< in [0,1] */
1347 GLint BaseLevel; /**< min mipmap level, OpenGL 1.2 */
1348 GLint MaxLevel; /**< max mipmap level, OpenGL 1.2 */
1349 GLint _MaxLevel; /**< actual max mipmap level (q in the spec) */
1350 GLfloat _MaxLambda; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1351 GLint CropRect[4]; /**< GL_OES_draw_texture */
1352 GLboolean GenerateMipmap; /**< GL_SGIS_generate_mipmap */
1353 GLboolean _Complete; /**< Is texture object complete? */
1354 GLboolean _RenderToTexture; /**< Any rendering to this texture? */
1355 GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
1356 GLboolean Immutable; /**< GL_ARB_texture_storage */
1357
1358 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1359 struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
1360
1361 /** GL_ARB_texture_buffer_object */
1362 struct gl_buffer_object *BufferObject;
1363 GLenum BufferObjectFormat;
1364
1365 /** GL_OES_EGL_image_external */
1366 GLint RequiredTextureImageUnits;
1367 };
1368
1369
1370 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1371 #define MAX_COMBINER_TERMS 4
1372
1373
1374 /**
1375 * Texture combine environment state.
1376 */
1377 struct gl_tex_env_combine_state
1378 {
1379 GLenum ModeRGB; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1380 GLenum ModeA; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1381 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1382 GLenum SourceRGB[MAX_COMBINER_TERMS];
1383 GLenum SourceA[MAX_COMBINER_TERMS];
1384 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1385 GLenum OperandRGB[MAX_COMBINER_TERMS];
1386 GLenum OperandA[MAX_COMBINER_TERMS];
1387 GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
1388 GLuint ScaleShiftA; /**< 0, 1 or 2 */
1389 GLuint _NumArgsRGB; /**< Number of inputs used for the RGB combiner */
1390 GLuint _NumArgsA; /**< Number of inputs used for the A combiner */
1391 };
1392
1393
1394 /**
1395 * Texture coord generation state.
1396 */
1397 struct gl_texgen
1398 {
1399 GLenum Mode; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1400 GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
1401 GLfloat ObjectPlane[4];
1402 GLfloat EyePlane[4];
1403 };
1404
1405
1406 /**
1407 * Texture unit state. Contains enable flags, texture environment/function/
1408 * combiners, texgen state, and pointers to current texture objects.
1409 */
1410 struct gl_texture_unit
1411 {
1412 GLbitfield Enabled; /**< bitmask of TEXTURE_*_BIT flags */
1413 GLbitfield _ReallyEnabled; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1414
1415 GLenum EnvMode; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1416 GLclampf EnvColor[4];
1417 GLfloat EnvColorUnclamped[4];
1418
1419 struct gl_texgen GenS;
1420 struct gl_texgen GenT;
1421 struct gl_texgen GenR;
1422 struct gl_texgen GenQ;
1423 GLbitfield TexGenEnabled; /**< Bitwise-OR of [STRQ]_BIT values */
1424 GLbitfield _GenFlags; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1425
1426 GLfloat LodBias; /**< for biasing mipmap levels */
1427 GLenum BumpTarget;
1428 GLfloat RotMatrix[4]; /* 2x2 matrix */
1429
1430 /**
1431 * \name GL_EXT_texture_env_combine
1432 */
1433 struct gl_tex_env_combine_state Combine;
1434
1435 /**
1436 * Derived state based on \c EnvMode and the \c BaseFormat of the
1437 * currently enabled texture.
1438 */
1439 struct gl_tex_env_combine_state _EnvMode;
1440
1441 /**
1442 * Currently enabled combiner state. This will point to either
1443 * \c Combine or \c _EnvMode.
1444 */
1445 struct gl_tex_env_combine_state *_CurrentCombine;
1446
1447 /** Current texture object pointers */
1448 struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS];
1449
1450 /** Points to highest priority, complete and enabled texture object */
1451 struct gl_texture_object *_Current;
1452 };
1453
1454
1455 /**
1456 * Texture attribute group (GL_TEXTURE_BIT).
1457 */
1458 struct gl_texture_attrib
1459 {
1460 GLuint CurrentUnit; /**< GL_ACTIVE_TEXTURE */
1461 struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
1462
1463 struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
1464
1465 /** GL_ARB_texture_buffer_object */
1466 struct gl_buffer_object *BufferObject;
1467
1468 /** GL_ARB_seamless_cubemap */
1469 GLboolean CubeMapSeamless;
1470
1471 /** Texture units/samplers used by vertex or fragment texturing */
1472 GLbitfield _EnabledUnits;
1473
1474 /** Texture coord units/sets used for fragment texturing */
1475 GLbitfield _EnabledCoordUnits;
1476
1477 /** Texture coord units that have texgen enabled */
1478 GLbitfield _TexGenEnabled;
1479
1480 /** Texture coord units that have non-identity matrices */
1481 GLbitfield _TexMatEnabled;
1482
1483 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1484 GLbitfield _GenFlags;
1485 };
1486
1487
1488 /**
1489 * Data structure representing a single clip plane (e.g. one of the elements
1490 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1491 */
1492 typedef GLfloat gl_clip_plane[4];
1493
1494
1495 /**
1496 * Transformation attribute group (GL_TRANSFORM_BIT).
1497 */
1498 struct gl_transform_attrib
1499 {
1500 GLenum MatrixMode; /**< Matrix mode */
1501 gl_clip_plane EyeUserPlane[MAX_CLIP_PLANES]; /**< User clip planes */
1502 gl_clip_plane _ClipUserPlane[MAX_CLIP_PLANES]; /**< derived */
1503 GLbitfield ClipPlanesEnabled; /**< on/off bitmask */
1504 GLboolean Normalize; /**< Normalize all normals? */
1505 GLboolean RescaleNormals; /**< GL_EXT_rescale_normal */
1506 GLboolean RasterPositionUnclipped; /**< GL_IBM_rasterpos_clip */
1507 GLboolean DepthClamp; /**< GL_ARB_depth_clamp */
1508
1509 GLfloat CullEyePos[4];
1510 GLfloat CullObjPos[4];
1511 };
1512
1513
1514 /**
1515 * Viewport attribute group (GL_VIEWPORT_BIT).
1516 */
1517 struct gl_viewport_attrib
1518 {
1519 GLint X, Y; /**< position */
1520 GLsizei Width, Height; /**< size */
1521 GLfloat Near, Far; /**< Depth buffer range */
1522 GLmatrix _WindowMap; /**< Mapping transformation as a matrix. */
1523 };
1524
1525
1526 /**
1527 * GL_ARB_vertex/pixel_buffer_object buffer object
1528 */
1529 struct gl_buffer_object
1530 {
1531 _glthread_Mutex Mutex;
1532 GLint RefCount;
1533 GLuint Name;
1534 GLenum Usage; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1535 GLsizeiptrARB Size; /**< Size of buffer storage in bytes */
1536 GLubyte *Data; /**< Location of storage either in RAM or VRAM. */
1537 /** Fields describing a mapped buffer */
1538 /*@{*/
1539 GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */
1540 GLvoid *Pointer; /**< User-space address of mapping */
1541 GLintptr Offset; /**< Mapped offset */
1542 GLsizeiptr Length; /**< Mapped length */
1543 /*@}*/
1544 GLboolean DeletePending; /**< true if buffer object is removed from the hash */
1545 GLboolean Written; /**< Ever written to? (for debugging) */
1546 GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
1547 };
1548
1549
1550 /**
1551 * Client pixel packing/unpacking attributes
1552 */
1553 struct gl_pixelstore_attrib
1554 {
1555 GLint Alignment;
1556 GLint RowLength;
1557 GLint SkipPixels;
1558 GLint SkipRows;
1559 GLint ImageHeight;
1560 GLint SkipImages;
1561 GLboolean SwapBytes;
1562 GLboolean LsbFirst;
1563 GLboolean Invert; /**< GL_MESA_pack_invert */
1564 struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
1565 };
1566
1567
1568 /**
1569 * Client vertex array attributes
1570 */
1571 struct gl_client_array
1572 {
1573 GLint Size; /**< components per element (1,2,3,4) */
1574 GLenum Type; /**< datatype: GL_FLOAT, GL_INT, etc */
1575 GLenum Format; /**< default: GL_RGBA, but may be GL_BGRA */
1576 GLsizei Stride; /**< user-specified stride */
1577 GLsizei StrideB; /**< actual stride in bytes */
1578 const GLubyte *Ptr; /**< Points to array data */
1579 GLboolean Enabled; /**< Enabled flag is a boolean */
1580 GLboolean Normalized; /**< GL_ARB_vertex_program */
1581 GLboolean Integer; /**< Integer-valued? */
1582 GLuint _ElementSize; /**< size of each element in bytes */
1583
1584 struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */
1585 GLuint _MaxElement; /**< max element index into array buffer + 1 */
1586 };
1587
1588
1589 /**
1590 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1591 * extension, but a nice encapsulation in any case.
1592 */
1593 struct gl_array_object
1594 {
1595 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1596 GLuint Name;
1597
1598 GLint RefCount;
1599 _glthread_Mutex Mutex;
1600
1601 /**
1602 * Does the VAO use ARB semantics or Apple semantics?
1603 *
1604 * There are several ways in which ARB_vertex_array_object and
1605 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1606 * least,
1607 *
1608 * - ARB VAOs require that all array data be sourced from vertex buffer
1609 * objects, but Apple VAOs do not.
1610 *
1611 * - ARB VAOs require that names come from GenVertexArrays.
1612 *
1613 * This flag notes which behavior governs this VAO.
1614 */
1615 GLboolean ARBsemantics;
1616
1617 /**
1618 * Has this array object been bound?
1619 */
1620 GLboolean _Used;
1621
1622 /** Vertex attribute arrays */
1623 struct gl_client_array VertexAttrib[VERT_ATTRIB_MAX];
1624
1625 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1626 GLbitfield64 _Enabled;
1627
1628 /**
1629 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1630 * we can determine the max legal (in bounds) glDrawElements array index.
1631 */
1632 GLuint _MaxElement;
1633
1634 struct gl_buffer_object *ElementArrayBufferObj;
1635 };
1636
1637
1638 /**
1639 * Vertex array state
1640 */
1641 struct gl_array_attrib
1642 {
1643 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1644 struct gl_array_object *ArrayObj;
1645
1646 /** The default vertex array object */
1647 struct gl_array_object *DefaultArrayObj;
1648
1649 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1650 struct _mesa_HashTable *Objects;
1651
1652 GLint ActiveTexture; /**< Client Active Texture */
1653 GLuint LockFirst; /**< GL_EXT_compiled_vertex_array */
1654 GLuint LockCount; /**< GL_EXT_compiled_vertex_array */
1655
1656 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1657 GLboolean PrimitiveRestart;
1658 GLuint RestartIndex;
1659
1660 GLbitfield64 NewState; /**< mask of VERT_BIT_* values */
1661 GLboolean RebindArrays; /**< whether the VBO module should rebind arrays */
1662
1663 /* GL_ARB_vertex_buffer_object */
1664 struct gl_buffer_object *ArrayBufferObj;
1665 };
1666
1667
1668 /**
1669 * Feedback buffer state
1670 */
1671 struct gl_feedback
1672 {
1673 GLenum Type;
1674 GLbitfield _Mask; /**< FB_* bits */
1675 GLfloat *Buffer;
1676 GLuint BufferSize;
1677 GLuint Count;
1678 };
1679
1680
1681 /**
1682 * Selection buffer state
1683 */
1684 struct gl_selection
1685 {
1686 GLuint *Buffer; /**< selection buffer */
1687 GLuint BufferSize; /**< size of the selection buffer */
1688 GLuint BufferCount; /**< number of values in the selection buffer */
1689 GLuint Hits; /**< number of records in the selection buffer */
1690 GLuint NameStackDepth; /**< name stack depth */
1691 GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
1692 GLboolean HitFlag; /**< hit flag */
1693 GLfloat HitMinZ; /**< minimum hit depth */
1694 GLfloat HitMaxZ; /**< maximum hit depth */
1695 };
1696
1697
1698 /**
1699 * 1-D Evaluator control points
1700 */
1701 struct gl_1d_map
1702 {
1703 GLuint Order; /**< Number of control points */
1704 GLfloat u1, u2, du; /**< u1, u2, 1.0/(u2-u1) */
1705 GLfloat *Points; /**< Points to contiguous control points */
1706 };
1707
1708
1709 /**
1710 * 2-D Evaluator control points
1711 */
1712 struct gl_2d_map
1713 {
1714 GLuint Uorder; /**< Number of control points in U dimension */
1715 GLuint Vorder; /**< Number of control points in V dimension */
1716 GLfloat u1, u2, du;
1717 GLfloat v1, v2, dv;
1718 GLfloat *Points; /**< Points to contiguous control points */
1719 };
1720
1721
1722 /**
1723 * All evaluator control point state
1724 */
1725 struct gl_evaluators
1726 {
1727 /**
1728 * \name 1-D maps
1729 */
1730 /*@{*/
1731 struct gl_1d_map Map1Vertex3;
1732 struct gl_1d_map Map1Vertex4;
1733 struct gl_1d_map Map1Index;
1734 struct gl_1d_map Map1Color4;
1735 struct gl_1d_map Map1Normal;
1736 struct gl_1d_map Map1Texture1;
1737 struct gl_1d_map Map1Texture2;
1738 struct gl_1d_map Map1Texture3;
1739 struct gl_1d_map Map1Texture4;
1740 struct gl_1d_map Map1Attrib[16]; /**< GL_NV_vertex_program */
1741 /*@}*/
1742
1743 /**
1744 * \name 2-D maps
1745 */
1746 /*@{*/
1747 struct gl_2d_map Map2Vertex3;
1748 struct gl_2d_map Map2Vertex4;
1749 struct gl_2d_map Map2Index;
1750 struct gl_2d_map Map2Color4;
1751 struct gl_2d_map Map2Normal;
1752 struct gl_2d_map Map2Texture1;
1753 struct gl_2d_map Map2Texture2;
1754 struct gl_2d_map Map2Texture3;
1755 struct gl_2d_map Map2Texture4;
1756 struct gl_2d_map Map2Attrib[16]; /**< GL_NV_vertex_program */
1757 /*@}*/
1758 };
1759
1760
1761 /**
1762 * Names of the various vertex/fragment program register files, etc.
1763 *
1764 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1765 * All values should fit in a 4-bit field.
1766 *
1767 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1768 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1769 * be "uniform" variables since they can only be set outside glBegin/End.
1770 * They're also all stored in the same Parameters array.
1771 */
1772 typedef enum
1773 {
1774 PROGRAM_TEMPORARY, /**< machine->Temporary[] */
1775 PROGRAM_INPUT, /**< machine->Inputs[] */
1776 PROGRAM_OUTPUT, /**< machine->Outputs[] */
1777 PROGRAM_VARYING, /**< machine->Inputs[]/Outputs[] */
1778 PROGRAM_LOCAL_PARAM, /**< gl_program->LocalParams[] */
1779 PROGRAM_ENV_PARAM, /**< gl_program->Parameters[] */
1780 PROGRAM_STATE_VAR, /**< gl_program->Parameters[] */
1781 PROGRAM_NAMED_PARAM, /**< gl_program->Parameters[] */
1782 PROGRAM_CONSTANT, /**< gl_program->Parameters[] */
1783 PROGRAM_UNIFORM, /**< gl_program->Parameters[] */
1784 PROGRAM_WRITE_ONLY, /**< A dummy, write-only register */
1785 PROGRAM_ADDRESS, /**< machine->AddressReg */
1786 PROGRAM_SAMPLER, /**< for shader samplers, compile-time only */
1787 PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */
1788 PROGRAM_UNDEFINED, /**< Invalid/TBD value */
1789 PROGRAM_FILE_MAX
1790 } gl_register_file;
1791
1792
1793 /**
1794 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1795 * one of these values.
1796 */
1797 typedef enum
1798 {
1799 SYSTEM_VALUE_FRONT_FACE, /**< Fragment shader only (not done yet) */
1800 SYSTEM_VALUE_VERTEX_ID, /**< Vertex shader only */
1801 SYSTEM_VALUE_INSTANCE_ID, /**< Vertex shader only */
1802 SYSTEM_VALUE_MAX /**< Number of values */
1803 } gl_system_value;
1804
1805
1806 /**
1807 * The possible interpolation qualifiers that can be applied to a fragment
1808 * shader input in GLSL.
1809 *
1810 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1811 * gl_fragment_program data structure to 0 causes the default behavior.
1812 */
1813 enum glsl_interp_qualifier
1814 {
1815 INTERP_QUALIFIER_NONE = 0,
1816 INTERP_QUALIFIER_SMOOTH,
1817 INTERP_QUALIFIER_FLAT,
1818 INTERP_QUALIFIER_NOPERSPECTIVE
1819 };
1820
1821
1822 /** Vertex and fragment instructions */
1823 struct prog_instruction;
1824 struct gl_program_parameter_list;
1825 struct gl_uniform_list;
1826
1827 /**
1828 * Base class for any kind of program object
1829 */
1830 struct gl_program
1831 {
1832 GLuint Id;
1833 GLubyte *String; /**< Null-terminated program text */
1834 GLint RefCount;
1835 GLenum Target; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1836 GLenum Format; /**< String encoding format */
1837 GLboolean Resident;
1838
1839 struct prog_instruction *Instructions;
1840
1841 GLbitfield64 InputsRead; /**< Bitmask of which input regs are read */
1842 GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */
1843 GLbitfield SystemValuesRead; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1844 GLbitfield InputFlags[MAX_PROGRAM_INPUTS]; /**< PROG_PARAM_BIT_x flags */
1845 GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
1846 GLbitfield TexturesUsed[MAX_COMBINED_TEXTURE_IMAGE_UNITS]; /**< TEXTURE_x_BIT bitmask */
1847 GLbitfield SamplersUsed; /**< Bitfield of which samplers are used */
1848 GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
1849
1850
1851 /** Named parameters, constants, etc. from program text */
1852 struct gl_program_parameter_list *Parameters;
1853 /** Numbered local parameters */
1854 GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4];
1855
1856 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1857 GLubyte SamplerUnits[MAX_SAMPLERS];
1858
1859 /** Bitmask of which register files are read/written with indirect
1860 * addressing. Mask of (1 << PROGRAM_x) bits.
1861 */
1862 GLbitfield IndirectRegisterFiles;
1863
1864 /** Logical counts */
1865 /*@{*/
1866 GLuint NumInstructions;
1867 GLuint NumTemporaries;
1868 GLuint NumParameters;
1869 GLuint NumAttributes;
1870 GLuint NumAddressRegs;
1871 GLuint NumAluInstructions;
1872 GLuint NumTexInstructions;
1873 GLuint NumTexIndirections;
1874 /*@}*/
1875 /** Native, actual h/w counts */
1876 /*@{*/
1877 GLuint NumNativeInstructions;
1878 GLuint NumNativeTemporaries;
1879 GLuint NumNativeParameters;
1880 GLuint NumNativeAttributes;
1881 GLuint NumNativeAddressRegs;
1882 GLuint NumNativeAluInstructions;
1883 GLuint NumNativeTexInstructions;
1884 GLuint NumNativeTexIndirections;
1885 /*@}*/
1886 };
1887
1888
1889 /** Vertex program object */
1890 struct gl_vertex_program
1891 {
1892 struct gl_program Base; /**< base class */
1893 GLboolean IsNVProgram; /**< is this a GL_NV_vertex_program program? */
1894 GLboolean IsPositionInvariant;
1895 GLboolean UsesClipDistance;
1896 };
1897
1898
1899 /** Geometry program object */
1900 struct gl_geometry_program
1901 {
1902 struct gl_program Base; /**< base class */
1903
1904 GLint VerticesOut;
1905 GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1906 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1907 GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1908 };
1909
1910
1911 /** Fragment program object */
1912 struct gl_fragment_program
1913 {
1914 struct gl_program Base; /**< base class */
1915 GLboolean UsesKill; /**< shader uses KIL instruction */
1916 GLboolean OriginUpperLeft;
1917 GLboolean PixelCenterInteger;
1918 enum gl_frag_depth_layout FragDepthLayout;
1919
1920 /**
1921 * GLSL interpolation qualifier associated with each fragment shader input.
1922 * For inputs that do not have an interpolation qualifier specified in
1923 * GLSL, the value is INTERP_QUALIFIER_NONE.
1924 */
1925 enum glsl_interp_qualifier InterpQualifier[FRAG_ATTRIB_MAX];
1926 };
1927
1928
1929 /**
1930 * State common to vertex and fragment programs.
1931 */
1932 struct gl_program_state
1933 {
1934 GLint ErrorPos; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1935 const char *ErrorString; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1936 };
1937
1938
1939 /**
1940 * Context state for vertex programs.
1941 */
1942 struct gl_vertex_program_state
1943 {
1944 GLboolean Enabled; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1945 GLboolean _Enabled; /**< Enabled and _valid_ user program? */
1946 GLboolean PointSizeEnabled; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1947 GLboolean TwoSideEnabled; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1948 /** Computed two sided lighting for fixed function/programs. */
1949 GLboolean _TwoSideEnabled;
1950 struct gl_vertex_program *Current; /**< User-bound vertex program */
1951
1952 /** Currently enabled and valid vertex program (including internal
1953 * programs, user-defined vertex programs and GLSL vertex shaders).
1954 * This is the program we must use when rendering.
1955 */
1956 struct gl_vertex_program *_Current;
1957
1958 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1959
1960 /* For GL_NV_vertex_program only: */
1961 GLenum TrackMatrix[MAX_PROGRAM_ENV_PARAMS / 4];
1962 GLenum TrackMatrixTransform[MAX_PROGRAM_ENV_PARAMS / 4];
1963
1964 /** Should fixed-function T&L be implemented with a vertex prog? */
1965 GLboolean _MaintainTnlProgram;
1966
1967 /** Program to emulate fixed-function T&L (see above) */
1968 struct gl_vertex_program *_TnlProgram;
1969
1970 /** Cache of fixed-function programs */
1971 struct gl_program_cache *Cache;
1972
1973 GLboolean _Overriden;
1974 };
1975
1976
1977 /**
1978 * Context state for geometry programs.
1979 */
1980 struct gl_geometry_program_state
1981 {
1982 GLboolean Enabled; /**< GL_ARB_GEOMETRY_SHADER4 */
1983 GLboolean _Enabled; /**< Enabled and valid program? */
1984 struct gl_geometry_program *Current; /**< user-bound geometry program */
1985
1986 /** Currently enabled and valid program (including internal programs
1987 * and compiled shader programs).
1988 */
1989 struct gl_geometry_program *_Current;
1990
1991 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1992
1993 /** Cache of fixed-function programs */
1994 struct gl_program_cache *Cache;
1995 };
1996
1997 /**
1998 * Context state for fragment programs.
1999 */
2000 struct gl_fragment_program_state
2001 {
2002 GLboolean Enabled; /**< User-set fragment program enable flag */
2003 GLboolean _Enabled; /**< Enabled and _valid_ user program? */
2004 struct gl_fragment_program *Current; /**< User-bound fragment program */
2005
2006 /** Currently enabled and valid fragment program (including internal
2007 * programs, user-defined fragment programs and GLSL fragment shaders).
2008 * This is the program we must use when rendering.
2009 */
2010 struct gl_fragment_program *_Current;
2011
2012 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
2013
2014 /** Should fixed-function texturing be implemented with a fragment prog? */
2015 GLboolean _MaintainTexEnvProgram;
2016
2017 /** Program to emulate fixed-function texture env/combine (see above) */
2018 struct gl_fragment_program *_TexEnvProgram;
2019
2020 /** Cache of fixed-function programs */
2021 struct gl_program_cache *Cache;
2022 };
2023
2024 /** Set by #pragma directives */
2025 struct gl_sl_pragmas
2026 {
2027 GLboolean IgnoreOptimize; /**< ignore #pragma optimize(on/off) ? */
2028 GLboolean IgnoreDebug; /**< ignore #pragma debug(on/off) ? */
2029 GLboolean Optimize; /**< defaults on */
2030 GLboolean Debug; /**< defaults off */
2031 };
2032
2033
2034 /**
2035 * A GLSL vertex or fragment shader object.
2036 */
2037 struct gl_shader
2038 {
2039 GLenum Type; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2040 GLuint Name; /**< AKA the handle */
2041 GLint RefCount; /**< Reference count */
2042 GLboolean DeletePending;
2043 GLboolean CompileStatus;
2044 const GLchar *Source; /**< Source code string */
2045 GLuint SourceChecksum; /**< for debug/logging purposes */
2046 struct gl_program *Program; /**< Post-compile assembly code */
2047 GLchar *InfoLog;
2048 struct gl_sl_pragmas Pragmas;
2049
2050 unsigned Version; /**< GLSL version used for linking */
2051
2052 /**
2053 * \name Sampler tracking
2054 *
2055 * \note Each of these fields is only set post-linking.
2056 */
2057 /*@{*/
2058 unsigned num_samplers; /**< Number of samplers used by this shader. */
2059 GLbitfield active_samplers; /**< Bitfield of which samplers are used */
2060 GLbitfield shadow_samplers; /**< Samplers used for shadow sampling. */
2061 /*@}*/
2062
2063 /**
2064 * Number of uniform components used by this shader.
2065 *
2066 * This field is only set post-linking.
2067 */
2068 unsigned num_uniform_components;
2069
2070 struct exec_list *ir;
2071 struct glsl_symbol_table *symbols;
2072
2073 /** Shaders containing built-in functions that are used for linking. */
2074 struct gl_shader *builtins_to_link[16];
2075 unsigned num_builtins_to_link;
2076 };
2077
2078
2079 /**
2080 * A GLSL program object.
2081 * Basically a linked collection of vertex and fragment shaders.
2082 */
2083 struct gl_shader_program
2084 {
2085 GLenum Type; /**< Always GL_SHADER_PROGRAM (internal token) */
2086 GLuint Name; /**< aka handle or ID */
2087 GLint RefCount; /**< Reference count */
2088 GLboolean DeletePending;
2089
2090 /**
2091 * Flags that the linker should not reject the program if it lacks
2092 * a vertex or fragment shader. GLES2 doesn't allow separate
2093 * shader objects, and would reject them. However, we internally
2094 * build separate shader objects for fixed function programs, which
2095 * we use for drivers/common/meta.c and for handling
2096 * _mesa_update_state with no program bound (for example in
2097 * glClear()).
2098 */
2099 GLboolean InternalSeparateShader;
2100
2101 GLuint NumShaders; /**< number of attached shaders */
2102 struct gl_shader **Shaders; /**< List of attached the shaders */
2103
2104 /**
2105 * User-defined attribute bindings
2106 *
2107 * These are set via \c glBindAttribLocation and are used to direct the
2108 * GLSL linker. These are \b not the values used in the compiled shader,
2109 * and they are \b not the values returned by \c glGetAttribLocation.
2110 */
2111 struct string_to_uint_map *AttributeBindings;
2112
2113 /**
2114 * User-defined fragment data bindings
2115 *
2116 * These are set via \c glBindFragDataLocation and are used to direct the
2117 * GLSL linker. These are \b not the values used in the compiled shader,
2118 * and they are \b not the values returned by \c glGetFragDataLocation.
2119 */
2120 struct string_to_uint_map *FragDataBindings;
2121
2122 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2123 enum gl_frag_depth_layout FragDepthLayout;
2124
2125 /** Geometry shader state - copied into gl_geometry_program at link time */
2126 struct {
2127 GLint VerticesOut;
2128 GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2129 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2130 GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2131 } Geom;
2132
2133 /** Vertex shader state - copied into gl_vertex_program at link time */
2134 struct {
2135 GLboolean UsesClipDistance; /**< True if gl_ClipDistance is written to. */
2136 GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
2137 0 if not present. */
2138 } Vert;
2139
2140 /* post-link info: */
2141 unsigned NumUserUniformStorage;
2142 struct gl_uniform_storage *UniformStorage;
2143
2144 /**
2145 * Map of active uniform names to locations
2146 *
2147 * Maps any active uniform that is not an array element to a location.
2148 * Each active uniform, including individual structure members will appear
2149 * in this map. This roughly corresponds to the set of names that would be
2150 * enumerated by \c glGetActiveUniform.
2151 */
2152 struct string_to_uint_map *UniformHash;
2153
2154 /**
2155 * Map from sampler unit to texture unit (set by glUniform1i())
2156 *
2157 * A sampler unit is associated with each sampler uniform by the linker.
2158 * The sampler unit associated with each uniform is stored in the
2159 * \c gl_uniform_storage::sampler field.
2160 */
2161 GLubyte SamplerUnits[MAX_SAMPLERS];
2162 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2163 gl_texture_index SamplerTargets[MAX_SAMPLERS];
2164
2165 GLboolean LinkStatus; /**< GL_LINK_STATUS */
2166 GLboolean Validated;
2167 GLboolean _Used; /**< Ever used for drawing? */
2168 GLchar *InfoLog;
2169
2170 unsigned Version; /**< GLSL version used for linking */
2171
2172 /**
2173 * Per-stage shaders resulting from the first stage of linking.
2174 *
2175 * Set of linked shaders for this program. The array is accessed using the
2176 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2177 * \c NULL.
2178 */
2179 struct gl_shader *_LinkedShaders[MESA_SHADER_TYPES];
2180 };
2181
2182
2183 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2184 #define GLSL_LOG 0x2 /**< Write shaders to files */
2185 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2186 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2187 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2188 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2189 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2190 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2191
2192
2193 /**
2194 * Context state for GLSL vertex/fragment shaders.
2195 */
2196 struct gl_shader_state
2197 {
2198 /**
2199 * Programs used for rendering
2200 *
2201 * There is a separate program set for each shader stage. If
2202 * GL_EXT_separate_shader_objects is not supported, each of these must point
2203 * to \c NULL or to the same program.
2204 */
2205 struct gl_shader_program *CurrentVertexProgram;
2206 struct gl_shader_program *CurrentGeometryProgram;
2207 struct gl_shader_program *CurrentFragmentProgram;
2208
2209 struct gl_shader_program *_CurrentFragmentProgram;
2210
2211 /**
2212 * Program used by glUniform calls.
2213 *
2214 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2215 */
2216 struct gl_shader_program *ActiveProgram;
2217
2218 GLbitfield Flags; /**< Mask of GLSL_x flags */
2219 };
2220
2221 /**
2222 * Compiler options for a single GLSL shaders type
2223 */
2224 struct gl_shader_compiler_options
2225 {
2226 /** Driver-selectable options: */
2227 GLboolean EmitCondCodes; /**< Use condition codes? */
2228 GLboolean EmitNVTempInitialization; /**< 0-fill NV temp registers */
2229 GLboolean EmitNoLoops;
2230 GLboolean EmitNoFunctions;
2231 GLboolean EmitNoCont; /**< Emit CONT opcode? */
2232 GLboolean EmitNoMainReturn; /**< Emit CONT/RET opcodes? */
2233 GLboolean EmitNoNoise; /**< Emit NOISE opcodes? */
2234 GLboolean EmitNoPow; /**< Emit POW opcodes? */
2235 GLboolean LowerClipDistance; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2236
2237 /**
2238 * \name Forms of indirect addressing the driver cannot do.
2239 */
2240 /*@{*/
2241 GLboolean EmitNoIndirectInput; /**< No indirect addressing of inputs */
2242 GLboolean EmitNoIndirectOutput; /**< No indirect addressing of outputs */
2243 GLboolean EmitNoIndirectTemp; /**< No indirect addressing of temps */
2244 GLboolean EmitNoIndirectUniform; /**< No indirect addressing of constants */
2245 /*@}*/
2246
2247 GLuint MaxIfDepth; /**< Maximum nested IF blocks */
2248 GLuint MaxUnrollIterations;
2249
2250 struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */
2251 };
2252
2253 /**
2254 * State which can be shared by multiple contexts:
2255 */
2256 struct gl_shared_state
2257 {
2258 _glthread_Mutex Mutex; /**< for thread safety */
2259 GLint RefCount; /**< Reference count */
2260 struct _mesa_HashTable *DisplayList; /**< Display lists hash table */
2261 struct _mesa_HashTable *TexObjects; /**< Texture objects hash table */
2262
2263 /** Default texture objects (shared by all texture units) */
2264 struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS];
2265
2266 /** Fallback texture used when a bound texture is incomplete */
2267 struct gl_texture_object *FallbackTex;
2268
2269 /**
2270 * \name Thread safety and statechange notification for texture
2271 * objects.
2272 *
2273 * \todo Improve the granularity of locking.
2274 */
2275 /*@{*/
2276 _glthread_Mutex TexMutex; /**< texobj thread safety */
2277 GLuint TextureStateStamp; /**< state notification for shared tex */
2278 /*@}*/
2279
2280 /** Default buffer object for vertex arrays that aren't in VBOs */
2281 struct gl_buffer_object *NullBufferObj;
2282
2283 /**
2284 * \name Vertex/geometry/fragment programs
2285 */
2286 /*@{*/
2287 struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */
2288 struct gl_vertex_program *DefaultVertexProgram;
2289 struct gl_fragment_program *DefaultFragmentProgram;
2290 struct gl_geometry_program *DefaultGeometryProgram;
2291 /*@}*/
2292
2293 struct _mesa_HashTable *BufferObjects;
2294
2295 /** Table of both gl_shader and gl_shader_program objects */
2296 struct _mesa_HashTable *ShaderObjects;
2297
2298 /* GL_EXT_framebuffer_object */
2299 struct _mesa_HashTable *RenderBuffers;
2300 struct _mesa_HashTable *FrameBuffers;
2301
2302 void *DriverData; /**< Device driver shared state */
2303 };
2304
2305
2306
2307 /**
2308 * Renderbuffers represent drawing surfaces such as color, depth and/or
2309 * stencil. A framebuffer object has a set of renderbuffers.
2310 * Drivers will typically derive subclasses of this type.
2311 */
2312 struct gl_renderbuffer
2313 {
2314 _glthread_Mutex Mutex; /**< for thread safety */
2315 GLuint ClassID; /**< Useful for drivers */
2316 GLuint Name;
2317 GLint RefCount;
2318 GLuint Width, Height;
2319 GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
2320 GLboolean AttachedAnytime; /**< TRUE if it was attached to a framebuffer */
2321 GLubyte NumSamples;
2322 GLenum InternalFormat; /**< The user-specified format */
2323 GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2324 GL_STENCIL_INDEX. */
2325 gl_format Format; /**< The actual renderbuffer memory format */
2326
2327 /** Delete this renderbuffer */
2328 void (*Delete)(struct gl_renderbuffer *rb);
2329
2330 /** Allocate new storage for this renderbuffer */
2331 GLboolean (*AllocStorage)(struct gl_context *ctx,
2332 struct gl_renderbuffer *rb,
2333 GLenum internalFormat,
2334 GLuint width, GLuint height);
2335 };
2336
2337
2338 /**
2339 * A renderbuffer attachment points to either a texture object (and specifies
2340 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2341 */
2342 struct gl_renderbuffer_attachment
2343 {
2344 GLenum Type; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2345 GLboolean Complete;
2346
2347 /**
2348 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2349 * application supplied renderbuffer object.
2350 */
2351 struct gl_renderbuffer *Renderbuffer;
2352
2353 /**
2354 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2355 * supplied texture object.
2356 */
2357 struct gl_texture_object *Texture;
2358 GLuint TextureLevel; /**< Attached mipmap level. */
2359 GLuint CubeMapFace; /**< 0 .. 5, for cube map textures. */
2360 GLuint Zoffset; /**< Slice for 3D textures, or layer for both 1D
2361 * and 2D array textures */
2362 };
2363
2364
2365 /**
2366 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2367 * In C++ terms, think of this as a base class from which device drivers
2368 * will make derived classes.
2369 */
2370 struct gl_framebuffer
2371 {
2372 _glthread_Mutex Mutex; /**< for thread safety */
2373 /**
2374 * If zero, this is a window system framebuffer. If non-zero, this
2375 * is a FBO framebuffer; note that for some devices (i.e. those with
2376 * a natural pixel coordinate system for FBOs that differs from the
2377 * OpenGL/Mesa coordinate system), this means that the viewport,
2378 * polygon face orientation, and polygon stipple will have to be inverted.
2379 */
2380 GLuint Name;
2381
2382 GLint RefCount;
2383 GLboolean DeletePending;
2384
2385 /**
2386 * The framebuffer's visual. Immutable if this is a window system buffer.
2387 * Computed from attachments if user-made FBO.
2388 */
2389 struct gl_config Visual;
2390
2391 GLboolean Initialized;
2392
2393 GLuint Width, Height; /**< size of frame buffer in pixels */
2394
2395 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2396 /*@{*/
2397 GLint _Xmin, _Xmax; /**< inclusive */
2398 GLint _Ymin, _Ymax; /**< exclusive */
2399 /*@}*/
2400
2401 /** \name Derived Z buffer stuff */
2402 /*@{*/
2403 GLuint _DepthMax; /**< Max depth buffer value */
2404 GLfloat _DepthMaxF; /**< Float max depth buffer value */
2405 GLfloat _MRD; /**< minimum resolvable difference in Z values */
2406 /*@}*/
2407
2408 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2409 GLenum _Status;
2410
2411 /** Integer color values */
2412 GLboolean _IntegerColor;
2413
2414 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2415 struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];
2416
2417 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2418 * attribute group and GL_PIXEL attribute group, respectively.
2419 */
2420 GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];
2421 GLenum ColorReadBuffer;
2422
2423 /** Computed from ColorDraw/ReadBuffer above */
2424 GLuint _NumColorDrawBuffers;
2425 GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */
2426 GLint _ColorReadBufferIndex; /* -1 = None */
2427 struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS];
2428 struct gl_renderbuffer *_ColorReadBuffer;
2429
2430 /** Delete this framebuffer */
2431 void (*Delete)(struct gl_framebuffer *fb);
2432 };
2433
2434
2435 /**
2436 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2437 */
2438 struct gl_precision
2439 {
2440 GLushort RangeMin; /**< min value exponent */
2441 GLushort RangeMax; /**< max value exponent */
2442 GLushort Precision; /**< number of mantissa bits */
2443 };
2444
2445
2446 /**
2447 * Limits for vertex, geometry and fragment programs/shaders.
2448 */
2449 struct gl_program_constants
2450 {
2451 /* logical limits */
2452 GLuint MaxInstructions;
2453 GLuint MaxAluInstructions;
2454 GLuint MaxTexInstructions;
2455 GLuint MaxTexIndirections;
2456 GLuint MaxAttribs;
2457 GLuint MaxTemps;
2458 GLuint MaxAddressRegs;
2459 GLuint MaxAddressOffset; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2460 GLuint MaxParameters;
2461 GLuint MaxLocalParams;
2462 GLuint MaxEnvParams;
2463 /* native/hardware limits */
2464 GLuint MaxNativeInstructions;
2465 GLuint MaxNativeAluInstructions;
2466 GLuint MaxNativeTexInstructions;
2467 GLuint MaxNativeTexIndirections;
2468 GLuint MaxNativeAttribs;
2469 GLuint MaxNativeTemps;
2470 GLuint MaxNativeAddressRegs;
2471 GLuint MaxNativeParameters;
2472 /* For shaders */
2473 GLuint MaxUniformComponents; /**< Usually == MaxParameters * 4 */
2474 /* ES 2.0 and GL_ARB_ES2_compatibility */
2475 struct gl_precision LowFloat, MediumFloat, HighFloat;
2476 struct gl_precision LowInt, MediumInt, HighInt;
2477 };
2478
2479
2480 /**
2481 * Constants which may be overridden by device driver during context creation
2482 * but are never changed after that.
2483 */
2484 struct gl_constants
2485 {
2486 GLint MaxTextureMbytes; /**< Max memory per image, in MB */
2487 GLint MaxTextureLevels; /**< Max mipmap levels. */
2488 GLint Max3DTextureLevels; /**< Max mipmap levels for 3D textures */
2489 GLint MaxCubeTextureLevels; /**< Max mipmap levels for cube textures */
2490 GLint MaxArrayTextureLayers; /**< Max layers in array textures */
2491 GLint MaxTextureRectSize; /**< Max rectangle texture size, in pixes */
2492 GLuint MaxTextureCoordUnits;
2493 GLuint MaxTextureImageUnits;
2494 GLuint MaxVertexTextureImageUnits;
2495 GLuint MaxCombinedTextureImageUnits;
2496 GLuint MaxGeometryTextureImageUnits;
2497 GLuint MaxTextureUnits; /**< = MIN(CoordUnits, ImageUnits) */
2498 GLfloat MaxTextureMaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
2499 GLfloat MaxTextureLodBias; /**< GL_EXT_texture_lod_bias */
2500 GLuint MaxTextureBufferSize; /**< GL_ARB_texture_buffer_object */
2501
2502 GLuint MaxArrayLockSize;
2503
2504 GLint SubPixelBits;
2505
2506 GLfloat MinPointSize, MaxPointSize; /**< aliased */
2507 GLfloat MinPointSizeAA, MaxPointSizeAA; /**< antialiased */
2508 GLfloat PointSizeGranularity;
2509 GLfloat MinLineWidth, MaxLineWidth; /**< aliased */
2510 GLfloat MinLineWidthAA, MaxLineWidthAA; /**< antialiased */
2511 GLfloat LineWidthGranularity;
2512
2513 GLuint MaxColorTableSize;
2514
2515 GLuint MaxClipPlanes;
2516 GLuint MaxLights;
2517 GLfloat MaxShininess; /**< GL_NV_light_max_exponent */
2518 GLfloat MaxSpotExponent; /**< GL_NV_light_max_exponent */
2519
2520 GLuint MaxViewportWidth, MaxViewportHeight;
2521
2522 struct gl_program_constants VertexProgram; /**< GL_ARB_vertex_program */
2523 struct gl_program_constants FragmentProgram; /**< GL_ARB_fragment_program */
2524 struct gl_program_constants GeometryProgram; /**< GL_ARB_geometry_shader4 */
2525 GLuint MaxProgramMatrices;
2526 GLuint MaxProgramMatrixStackDepth;
2527
2528 /** vertex array / buffer object bounds checking */
2529 GLboolean CheckArrayBounds;
2530
2531 GLuint MaxDrawBuffers; /**< GL_ARB_draw_buffers */
2532
2533 GLuint MaxColorAttachments; /**< GL_EXT_framebuffer_object */
2534 GLuint MaxRenderbufferSize; /**< GL_EXT_framebuffer_object */
2535 GLuint MaxSamples; /**< GL_ARB_framebuffer_object */
2536
2537 /** Number of varying vectors between vertex and fragment shaders */
2538 GLuint MaxVarying;
2539 GLuint MaxVertexVaryingComponents; /**< Between vert and geom shader */
2540 GLuint MaxGeometryVaryingComponents; /**< Between geom and frag shader */
2541
2542 /** GL_ARB_geometry_shader4 */
2543 GLuint MaxGeometryOutputVertices;
2544 GLuint MaxGeometryTotalOutputComponents;
2545
2546 GLuint GLSLVersion; /**< GLSL version supported (ex: 120 = 1.20) */
2547
2548 /**
2549 * Changes default GLSL extension behavior from "error" to "warn". It's out
2550 * of spec, but it can make some apps work that otherwise wouldn't.
2551 */
2552 GLboolean ForceGLSLExtensionsWarn;
2553
2554 /**
2555 * Does the driver support real 32-bit integers? (Otherwise, integers are
2556 * simulated via floats.)
2557 */
2558 GLboolean NativeIntegers;
2559
2560 /**
2561 * If the driver supports real 32-bit integers, what integer value should be
2562 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2563 */
2564 GLuint UniformBooleanTrue;
2565
2566 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2567 GLbitfield SupportedBumpUnits;
2568
2569 /** GL_EXT_provoking_vertex */
2570 GLboolean QuadsFollowProvokingVertexConvention;
2571
2572 /** OpenGL version 3.0 */
2573 GLbitfield ContextFlags; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2574
2575 /** OpenGL version 3.2 */
2576 GLbitfield ProfileMask; /**< Mask of CONTEXT_x_PROFILE_BIT */
2577
2578 /** GL_EXT_gpu_shader4 */
2579 GLint MinProgramTexelOffset, MaxProgramTexelOffset;
2580
2581 /* GL_EXT_framebuffer_sRGB */
2582 GLboolean sRGBCapable; /* can enable sRGB blend/update on FBOs */
2583
2584 /* GL_ARB_robustness */
2585 GLenum ResetStrategy;
2586
2587 /**
2588 * Whether the implementation strips out and ignores texture borders.
2589 *
2590 * Many GPU hardware implementations don't support rendering with texture
2591 * borders and mipmapped textures. (Note: not static border color, but the
2592 * old 1-pixel border around each edge). Implementations then have to do
2593 * slow fallbacks to be correct, or just ignore the border and be fast but
2594 * wrong. Setting the flag stripts the border off of TexImage calls,
2595 * providing "fast but wrong" at significantly reduced driver complexity.
2596 *
2597 * Texture borders are deprecated in GL 3.0.
2598 **/
2599 GLboolean StripTextureBorder;
2600
2601 /**
2602 * For drivers which can do a better job at eliminating unused varyings
2603 * and uniforms than the GLSL compiler.
2604 *
2605 * XXX Remove these as soon as a better solution is available.
2606 */
2607 GLboolean GLSLSkipStrictMaxVaryingLimitCheck;
2608 GLboolean GLSLSkipStrictMaxUniformLimitCheck;
2609 };
2610
2611
2612 /**
2613 * Enable flag for each OpenGL extension. Different device drivers will
2614 * enable different extensions at runtime.
2615 */
2616 struct gl_extensions
2617 {
2618 GLboolean dummy; /* don't remove this! */
2619 GLboolean dummy_true; /* Set true by _mesa_init_extensions(). */
2620 GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */
2621 GLboolean ARB_ES2_compatibility;
2622 GLboolean ARB_blend_func_extended;
2623 GLboolean ARB_color_buffer_float;
2624 GLboolean ARB_conservative_depth;
2625 GLboolean ARB_copy_buffer;
2626 GLboolean ARB_depth_buffer_float;
2627 GLboolean ARB_depth_clamp;
2628 GLboolean ARB_draw_buffers_blend;
2629 GLboolean ARB_draw_elements_base_vertex;
2630 GLboolean ARB_draw_instanced;
2631 GLboolean ARB_fragment_coord_conventions;
2632 GLboolean ARB_fragment_program;
2633 GLboolean ARB_fragment_program_shadow;
2634 GLboolean ARB_fragment_shader;
2635 GLboolean ARB_framebuffer_object;
2636 GLboolean ARB_explicit_attrib_location;
2637 GLboolean ARB_geometry_shader4;
2638 GLboolean ARB_half_float_pixel;
2639 GLboolean ARB_half_float_vertex;
2640 GLboolean ARB_map_buffer_range;
2641 GLboolean ARB_point_sprite;
2642 GLboolean ARB_seamless_cube_map;
2643 GLboolean ARB_shader_objects;
2644 GLboolean ARB_shader_stencil_export;
2645 GLboolean ARB_shader_texture_lod;
2646 GLboolean ARB_shading_language_100;
2647 GLboolean ARB_texture_border_clamp;
2648 GLboolean ARB_texture_buffer_object;
2649 GLboolean ARB_texture_compression_rgtc;
2650 GLboolean ARB_texture_cube_map;
2651 GLboolean ARB_texture_env_combine;
2652 GLboolean ARB_texture_env_crossbar;
2653 GLboolean ARB_texture_env_dot3;
2654 GLboolean ARB_texture_float;
2655 GLboolean ARB_texture_multisample;
2656 GLboolean ARB_texture_non_power_of_two;
2657 GLboolean ARB_texture_rg;
2658 GLboolean ARB_texture_storage;
2659 GLboolean ARB_transpose_matrix;
2660 GLboolean ARB_uniform_buffer_object;
2661 GLboolean ARB_vertex_array_object;
2662 GLboolean ARB_vertex_program;
2663 GLboolean ARB_vertex_shader;
2664 GLboolean ARB_window_pos;
2665 GLboolean EXT_blend_color;
2666 GLboolean EXT_blend_equation_separate;
2667 GLboolean EXT_blend_func_separate;
2668 GLboolean EXT_blend_minmax;
2669 GLboolean EXT_clip_volume_hint;
2670 GLboolean EXT_compiled_vertex_array;
2671 GLboolean EXT_depth_bounds_test;
2672 GLboolean EXT_draw_range_elements;
2673 GLboolean EXT_fog_coord;
2674 GLboolean EXT_framebuffer_blit;
2675 GLboolean EXT_framebuffer_multisample;
2676 GLboolean EXT_framebuffer_object;
2677 GLboolean EXT_framebuffer_sRGB;
2678 GLboolean EXT_gpu_program_parameters;
2679 GLboolean EXT_gpu_shader4;
2680 GLboolean EXT_packed_depth_stencil;
2681 GLboolean EXT_packed_pixels;
2682 GLboolean EXT_pixel_buffer_object;
2683 GLboolean EXT_point_parameters;
2684 GLboolean EXT_provoking_vertex;
2685 GLboolean EXT_rescale_normal;
2686 GLboolean EXT_shadow_funcs;
2687 GLboolean EXT_secondary_color;
2688 GLboolean EXT_separate_shader_objects;
2689 GLboolean EXT_separate_specular_color;
2690 GLboolean EXT_stencil_two_side;
2691 GLboolean EXT_texture3D;
2692 GLboolean EXT_texture_array;
2693 GLboolean EXT_texture_compression_latc;
2694 GLboolean EXT_texture_compression_s3tc;
2695 GLboolean EXT_texture_env_dot3;
2696 GLboolean EXT_texture_filter_anisotropic;
2697 GLboolean EXT_texture_integer;
2698 GLboolean EXT_texture_mirror_clamp;
2699 GLboolean EXT_texture_snorm;
2700 GLboolean EXT_texture_sRGB;
2701 GLboolean EXT_vertex_array_bgra;
2702 GLboolean OES_standard_derivatives;
2703 /* vendor extensions */
2704 GLboolean AMD_seamless_cubemap_per_texture;
2705 GLboolean APPLE_packed_pixels;
2706 GLboolean APPLE_vertex_array_object;
2707 GLboolean APPLE_object_purgeable;
2708 GLboolean ATI_envmap_bumpmap;
2709 GLboolean ATI_texture_compression_3dc;
2710 GLboolean ATI_texture_mirror_once;
2711 GLboolean ATI_texture_env_combine3;
2712 GLboolean ATI_separate_stencil;
2713 GLboolean IBM_rasterpos_clip;
2714 GLboolean IBM_multimode_draw_arrays;
2715 GLboolean MESA_pack_invert;
2716 GLboolean MESA_resize_buffers;
2717 GLboolean MESA_ycbcr_texture;
2718 GLboolean MESA_texture_array;
2719 GLboolean NV_blend_square;
2720 GLboolean NV_fog_distance;
2721 GLboolean NV_fragment_program;
2722 GLboolean NV_fragment_program_option;
2723 GLboolean NV_light_max_exponent;
2724 GLboolean NV_point_sprite;
2725 GLboolean NV_primitive_restart;
2726 GLboolean NV_texture_barrier;
2727 GLboolean NV_texgen_reflection;
2728 GLboolean NV_texture_env_combine4;
2729 GLboolean NV_texture_rectangle;
2730 GLboolean NV_vertex_program;
2731 GLboolean NV_vertex_program1_1;
2732 GLboolean SGIS_texture_lod;
2733 GLboolean TDFX_texture_compression_FXT1;
2734 GLboolean S3_s3tc;
2735 GLboolean OES_EGL_image;
2736 GLboolean OES_draw_texture;
2737 GLboolean OES_EGL_image_external;
2738 GLboolean extension_sentinel;
2739 /** The extension string */
2740 const GLubyte *String;
2741 /** Number of supported extensions */
2742 GLuint Count;
2743 };
2744
2745
2746 /**
2747 * A stack of matrices (projection, modelview, color, texture, etc).
2748 */
2749 struct gl_matrix_stack
2750 {
2751 GLmatrix *Top; /**< points into Stack */
2752 GLmatrix *Stack; /**< array [MaxDepth] of GLmatrix */
2753 GLuint Depth; /**< 0 <= Depth < MaxDepth */
2754 GLuint MaxDepth; /**< size of Stack[] array */
2755 GLuint DirtyFlag; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2756 };
2757
2758
2759 /**
2760 * \name Bits for image transfer operations
2761 * \sa __struct gl_contextRec::ImageTransferState.
2762 */
2763 /*@{*/
2764 #define IMAGE_SCALE_BIAS_BIT 0x1
2765 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2766 #define IMAGE_MAP_COLOR_BIT 0x4
2767 #define IMAGE_CLAMP_BIT 0x800
2768
2769
2770 /** Pixel Transfer ops */
2771 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2772 IMAGE_SHIFT_OFFSET_BIT | \
2773 IMAGE_MAP_COLOR_BIT)
2774
2775 /**
2776 * \name Bits to indicate what state has changed.
2777 */
2778 /*@{*/
2779 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2780 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2781 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2782 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2783 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2784 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2785 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2786 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2787 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2788 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2789 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2790 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2791 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2792 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2793 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2794 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2795 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2796 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2797 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2798 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2799 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2800 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2801 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2802 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2803 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2804 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2805 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2806 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2807 #define _NEW_BUFFER_OBJECT (1 << 28)
2808 #define _NEW_FRAG_CLAMP (1 << 29)
2809 #define _NEW_ALL ~0
2810
2811 /**
2812 * We use _NEW_TRANSFORM for GL_RASTERIZER_DISCARD. This #define is for
2813 * clarity.
2814 */
2815 #define _NEW_RASTERIZER_DISCARD _NEW_TRANSFORM
2816 /*@}*/
2817
2818
2819 /**
2820 * \name A bunch of flags that we think might be useful to drivers.
2821 *
2822 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
2823 */
2824 /*@{*/
2825 #define DD_FLATSHADE 0x1
2826 #define DD_SEPARATE_SPECULAR 0x2
2827 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2828 #define DD_TRI_LIGHT_TWOSIDE 0x8
2829 #define DD_TRI_UNFILLED 0x10
2830 #define DD_TRI_SMOOTH 0x20
2831 #define DD_TRI_STIPPLE 0x40
2832 #define DD_TRI_OFFSET 0x80
2833 #define DD_LINE_SMOOTH 0x100
2834 #define DD_LINE_STIPPLE 0x200
2835 #define DD_POINT_SMOOTH 0x400
2836 #define DD_POINT_ATTEN 0x800
2837 #define DD_TRI_TWOSTENCIL 0x1000
2838 /*@}*/
2839
2840
2841 /**
2842 * \name Define the state changes under which each of these bits might change
2843 */
2844 /*@{*/
2845 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2846 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2847 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2848 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2849 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2850 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2851 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2852 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2853 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2854 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2855 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2856 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2857 #define _DD_NEW_POINT_SIZE _NEW_POINT
2858 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2859 /*@}*/
2860
2861
2862 /**
2863 * Composite state flags
2864 */
2865 /*@{*/
2866 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2867 _NEW_TEXTURE | \
2868 _NEW_POINT | \
2869 _NEW_PROGRAM | \
2870 _NEW_MODELVIEW)
2871 /*@}*/
2872
2873
2874
2875
2876 /* This has to be included here. */
2877 #include "dd.h"
2878
2879
2880 /**
2881 * Display list flags.
2882 * Strictly this is a tnl-private concept, but it doesn't seem
2883 * worthwhile adding a tnl private structure just to hold this one bit
2884 * of information:
2885 */
2886 #define DLIST_DANGLING_REFS 0x1
2887
2888
2889 /** Opaque declaration of display list payload data type */
2890 union gl_dlist_node;
2891
2892
2893 /**
2894 * Provide a location where information about a display list can be
2895 * collected. Could be extended with driverPrivate structures,
2896 * etc. in the future.
2897 */
2898 struct gl_display_list
2899 {
2900 GLuint Name;
2901 GLbitfield Flags; /**< DLIST_x flags */
2902 /** The dlist commands are in a linked list of nodes */
2903 union gl_dlist_node *Head;
2904 };
2905
2906
2907 /**
2908 * State used during display list compilation and execution.
2909 */
2910 struct gl_dlist_state
2911 {
2912 GLuint CallDepth; /**< Current recursion calling depth */
2913
2914 struct gl_display_list *CurrentList; /**< List currently being compiled */
2915 union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */
2916 GLuint CurrentPos; /**< Index into current block of nodes */
2917
2918 GLvertexformat ListVtxfmt;
2919
2920 GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
2921 GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
2922
2923 GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
2924 GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
2925
2926 GLubyte ActiveIndex;
2927 GLfloat CurrentIndex;
2928
2929 GLubyte ActiveEdgeFlag;
2930 GLboolean CurrentEdgeFlag;
2931
2932 struct {
2933 /* State known to have been set by the currently-compiling display
2934 * list. Used to eliminate some redundant state changes.
2935 */
2936 GLenum ShadeModel;
2937 } Current;
2938 };
2939
2940
2941 /**
2942 * Enum for the OpenGL APIs we know about and may support.
2943 */
2944 typedef enum
2945 {
2946 API_OPENGL,
2947 API_OPENGLES,
2948 API_OPENGLES2
2949 } gl_api;
2950
2951
2952 /**
2953 * Mesa rendering context.
2954 *
2955 * This is the central context data structure for Mesa. Almost all
2956 * OpenGL state is contained in this structure.
2957 * Think of this as a base class from which device drivers will derive
2958 * sub classes.
2959 *
2960 * The struct gl_context typedef names this structure.
2961 */
2962 struct gl_context
2963 {
2964 /** State possibly shared with other contexts in the address space */
2965 struct gl_shared_state *Shared;
2966
2967 /** \name API function pointer tables */
2968 /*@{*/
2969 gl_api API;
2970 struct _glapi_table *Save; /**< Display list save functions */
2971 struct _glapi_table *Exec; /**< Execute functions */
2972 struct _glapi_table *CurrentDispatch; /**< == Save or Exec !! */
2973 /*@}*/
2974
2975 struct gl_config Visual;
2976 struct gl_framebuffer *DrawBuffer; /**< buffer for writing */
2977 struct gl_framebuffer *ReadBuffer; /**< buffer for reading */
2978 struct gl_framebuffer *WinSysDrawBuffer; /**< set with MakeCurrent */
2979 struct gl_framebuffer *WinSysReadBuffer; /**< set with MakeCurrent */
2980
2981 /**
2982 * Device driver function pointer table
2983 */
2984 struct dd_function_table Driver;
2985
2986 void *DriverCtx; /**< Points to device driver context/state */
2987
2988 /** Core/Driver constants */
2989 struct gl_constants Const;
2990
2991 /** \name The various 4x4 matrix stacks */
2992 /*@{*/
2993 struct gl_matrix_stack ModelviewMatrixStack;
2994 struct gl_matrix_stack ProjectionMatrixStack;
2995 struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS];
2996 struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
2997 struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */
2998 /*@}*/
2999
3000 /** Combined modelview and projection matrix */
3001 GLmatrix _ModelProjectMatrix;
3002
3003 /** \name Display lists */
3004 struct gl_dlist_state ListState;
3005
3006 GLboolean ExecuteFlag; /**< Execute GL commands? */
3007 GLboolean CompileFlag; /**< Compile GL commands into display list? */
3008
3009 /** Extension information */
3010 struct gl_extensions Extensions;
3011
3012 /** Version info */
3013 GLuint VersionMajor, VersionMinor;
3014 char *VersionString;
3015
3016 /** \name State attribute stack (for glPush/PopAttrib) */
3017 /*@{*/
3018 GLuint AttribStackDepth;
3019 struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
3020 /*@}*/
3021
3022 /** \name Renderer attribute groups
3023 *
3024 * We define a struct for each attribute group to make pushing and popping
3025 * attributes easy. Also it's a good organization.
3026 */
3027 /*@{*/
3028 struct gl_accum_attrib Accum; /**< Accum buffer attributes */
3029 struct gl_colorbuffer_attrib Color; /**< Color buffer attributes */
3030 struct gl_current_attrib Current; /**< Current attributes */
3031 struct gl_depthbuffer_attrib Depth; /**< Depth buffer attributes */
3032 struct gl_eval_attrib Eval; /**< Eval attributes */
3033 struct gl_fog_attrib Fog; /**< Fog attributes */
3034 struct gl_hint_attrib Hint; /**< Hint attributes */
3035 struct gl_light_attrib Light; /**< Light attributes */
3036 struct gl_line_attrib Line; /**< Line attributes */
3037 struct gl_list_attrib List; /**< List attributes */
3038 struct gl_multisample_attrib Multisample;
3039 struct gl_pixel_attrib Pixel; /**< Pixel attributes */
3040 struct gl_point_attrib Point; /**< Point attributes */
3041 struct gl_polygon_attrib Polygon; /**< Polygon attributes */
3042 GLuint PolygonStipple[32]; /**< Polygon stipple */
3043 struct gl_scissor_attrib Scissor; /**< Scissor attributes */
3044 struct gl_stencil_attrib Stencil; /**< Stencil buffer attributes */
3045 struct gl_texture_attrib Texture; /**< Texture attributes */
3046 struct gl_transform_attrib Transform; /**< Transformation attributes */
3047 struct gl_viewport_attrib Viewport; /**< Viewport attributes */
3048 /*@}*/
3049
3050 /** \name Client attribute stack */
3051 /*@{*/
3052 GLuint ClientAttribStackDepth;
3053 struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
3054 /*@}*/
3055
3056 /** \name Client attribute groups */
3057 /*@{*/
3058 struct gl_array_attrib Array; /**< Vertex arrays */
3059 struct gl_pixelstore_attrib Pack; /**< Pixel packing */
3060 struct gl_pixelstore_attrib Unpack; /**< Pixel unpacking */
3061 struct gl_pixelstore_attrib DefaultPacking; /**< Default params */
3062 /*@}*/
3063
3064 /** \name Other assorted state (not pushed/popped on attribute stack) */
3065 /*@{*/
3066 struct gl_pixelmaps PixelMaps;
3067
3068 struct gl_evaluators EvalMap; /**< All evaluators */
3069 struct gl_feedback Feedback; /**< Feedback */
3070 struct gl_selection Select; /**< Selection */
3071
3072 struct gl_program_state Program; /**< general program state */
3073 struct gl_vertex_program_state VertexProgram;
3074 struct gl_fragment_program_state FragmentProgram;
3075 struct gl_geometry_program_state GeometryProgram;
3076
3077 struct gl_shader_state Shader; /**< GLSL shader object state */
3078 struct gl_shader_compiler_options ShaderCompilerOptions[MESA_SHADER_TYPES];
3079
3080 struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
3081 struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */
3082 /*@}*/
3083
3084 struct gl_meta_state *Meta; /**< for "meta" operations */
3085
3086 /* GL_EXT_framebuffer_object */
3087 struct gl_renderbuffer *CurrentRenderbuffer;
3088
3089 GLenum ErrorValue; /**< Last error code */
3090
3091 /* GL_ARB_robustness */
3092 GLenum ResetStatus;
3093
3094 /**
3095 * Recognize and silence repeated error debug messages in buggy apps.
3096 */
3097 const char *ErrorDebugFmtString;
3098 GLuint ErrorDebugCount;
3099
3100 GLenum RenderMode; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3101 GLbitfield NewState; /**< bitwise-or of _NEW_* flags */
3102
3103 GLboolean ViewportInitialized; /**< has viewport size been initialized? */
3104
3105 GLbitfield64 varying_vp_inputs; /**< mask of VERT_BIT_* flags */
3106
3107 /** \name Derived state */
3108 /*@{*/
3109 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3110 * state validation so they need to always be current.
3111 */
3112 GLbitfield _TriangleCaps;
3113 GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
3114 GLfloat _EyeZDir[3];
3115 GLfloat _ModelViewInvScale;
3116 GLboolean _NeedEyeCoords;
3117 GLboolean _ForceEyeCoords;
3118
3119 GLuint TextureStateTimestamp; /**< detect changes to shared state */
3120
3121 struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */
3122 struct gl_shine_tab *_ShineTabList; /**< MRU list of inactive shine tables */
3123 /**@}*/
3124
3125 struct gl_list_extensions *ListExt; /**< driver dlist extensions */
3126
3127 /** \name For debugging/development only */
3128 /*@{*/
3129 GLboolean FirstTimeCurrent;
3130 /*@}*/
3131
3132 /** software compression/decompression supported or not */
3133 GLboolean Mesa_DXTn;
3134
3135 GLboolean TextureFormatSupported[MESA_FORMAT_COUNT];
3136
3137 /**
3138 * Use dp4 (rather than mul/mad) instructions for position
3139 * transformation?
3140 */
3141 GLboolean mvp_with_dp4;
3142
3143 GLboolean RasterDiscard; /**< GL_RASTERIZER_DISCARD */
3144
3145 /**
3146 * \name Hooks for module contexts.
3147 *
3148 * These will eventually live in the driver or elsewhere.
3149 */
3150 /*@{*/
3151 void *swrast_context;
3152 void *swsetup_context;
3153 void *swtnl_context;
3154 void *swtnl_im;
3155 struct st_context *st;
3156 void *aelt_context;
3157 /*@}*/
3158 };
3159
3160
3161 #ifdef DEBUG
3162 extern int MESA_VERBOSE;
3163 extern int MESA_DEBUG_FLAGS;
3164 # define MESA_FUNCTION __FUNCTION__
3165 #else
3166 # define MESA_VERBOSE 0
3167 # define MESA_DEBUG_FLAGS 0
3168 # define MESA_FUNCTION "a function"
3169 # ifndef NDEBUG
3170 # define NDEBUG
3171 # endif
3172 #endif
3173
3174
3175 /** The MESA_VERBOSE var is a bitmask of these flags */
3176 enum _verbose
3177 {
3178 VERBOSE_VARRAY = 0x0001,
3179 VERBOSE_TEXTURE = 0x0002,
3180 VERBOSE_MATERIAL = 0x0004,
3181 VERBOSE_PIPELINE = 0x0008,
3182 VERBOSE_DRIVER = 0x0010,
3183 VERBOSE_STATE = 0x0020,
3184 VERBOSE_API = 0x0040,
3185 VERBOSE_DISPLAY_LIST = 0x0100,
3186 VERBOSE_LIGHTING = 0x0200,
3187 VERBOSE_PRIMS = 0x0400,
3188 VERBOSE_VERTS = 0x0800,
3189 VERBOSE_DISASSEM = 0x1000,
3190 VERBOSE_DRAW = 0x2000,
3191 VERBOSE_SWAPBUFFERS = 0x4000
3192 };
3193
3194
3195 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3196 enum _debug
3197 {
3198 DEBUG_ALWAYS_FLUSH = 0x1
3199 };
3200
3201
3202
3203 #ifdef __cplusplus
3204 }
3205 #endif
3206
3207 #endif /* MTYPES_H */