mesa: Add varying slot for viewport index
[mesa.git] / src / mesa / main / mtypes.h
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * 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 <stdint.h> /* uint32_t */
38 #include <stdbool.h>
39
40 #include "main/glheader.h"
41 #include "main/config.h"
42 #include "glapi/glapi.h"
43 #include "math/m_matrix.h" /* GLmatrix */
44 #include "main/simple_list.h" /* struct simple_node */
45 #include "main/formats.h" /* MESA_FORMAT_COUNT */
46
47
48 #ifdef __cplusplus
49 extern "C" {
50 #endif
51
52
53 /**
54 * \name 64-bit extension of GLbitfield.
55 */
56 /*@{*/
57 typedef GLuint64 GLbitfield64;
58
59 /** Set a single bit */
60 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
61 /** Set all bits up to excluding bit b */
62 #define BITFIELD64_MASK(b) \
63 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
64 /** Set count bits starting from bit b */
65 #define BITFIELD64_RANGE(b, count) \
66 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
67
68
69 /**
70 * \name Some forward type declarations
71 */
72 /*@{*/
73 struct _mesa_HashTable;
74 struct gl_attrib_node;
75 struct gl_list_extensions;
76 struct gl_meta_state;
77 struct gl_program_cache;
78 struct gl_texture_object;
79 struct gl_context;
80 struct st_context;
81 struct gl_uniform_storage;
82 struct prog_instruction;
83 struct gl_program_parameter_list;
84 struct set;
85 struct set_entry;
86 struct vbo_context;
87 /*@}*/
88
89
90 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
91 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
92 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
93 #define PRIM_UNKNOWN (PRIM_MAX + 2)
94
95
96
97 /**
98 * Indexes for vertex program attributes.
99 * GL_NV_vertex_program aliases generic attributes over the conventional
100 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
101 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
102 * generic attributes are distinct/separate).
103 */
104 typedef enum
105 {
106 VERT_ATTRIB_POS = 0,
107 VERT_ATTRIB_WEIGHT = 1,
108 VERT_ATTRIB_NORMAL = 2,
109 VERT_ATTRIB_COLOR0 = 3,
110 VERT_ATTRIB_COLOR1 = 4,
111 VERT_ATTRIB_FOG = 5,
112 VERT_ATTRIB_COLOR_INDEX = 6,
113 VERT_ATTRIB_EDGEFLAG = 7,
114 VERT_ATTRIB_TEX0 = 8,
115 VERT_ATTRIB_TEX1 = 9,
116 VERT_ATTRIB_TEX2 = 10,
117 VERT_ATTRIB_TEX3 = 11,
118 VERT_ATTRIB_TEX4 = 12,
119 VERT_ATTRIB_TEX5 = 13,
120 VERT_ATTRIB_TEX6 = 14,
121 VERT_ATTRIB_TEX7 = 15,
122 VERT_ATTRIB_POINT_SIZE = 16,
123 VERT_ATTRIB_GENERIC0 = 17,
124 VERT_ATTRIB_GENERIC1 = 18,
125 VERT_ATTRIB_GENERIC2 = 19,
126 VERT_ATTRIB_GENERIC3 = 20,
127 VERT_ATTRIB_GENERIC4 = 21,
128 VERT_ATTRIB_GENERIC5 = 22,
129 VERT_ATTRIB_GENERIC6 = 23,
130 VERT_ATTRIB_GENERIC7 = 24,
131 VERT_ATTRIB_GENERIC8 = 25,
132 VERT_ATTRIB_GENERIC9 = 26,
133 VERT_ATTRIB_GENERIC10 = 27,
134 VERT_ATTRIB_GENERIC11 = 28,
135 VERT_ATTRIB_GENERIC12 = 29,
136 VERT_ATTRIB_GENERIC13 = 30,
137 VERT_ATTRIB_GENERIC14 = 31,
138 VERT_ATTRIB_GENERIC15 = 32,
139 VERT_ATTRIB_MAX = 33
140 } gl_vert_attrib;
141
142 /**
143 * Symbolic constats to help iterating over
144 * specific blocks of vertex attributes.
145 *
146 * VERT_ATTRIB_FF
147 * includes all fixed function attributes as well as
148 * the aliased GL_NV_vertex_program shader attributes.
149 * VERT_ATTRIB_TEX
150 * include the classic texture coordinate attributes.
151 * Is a subset of VERT_ATTRIB_FF.
152 * VERT_ATTRIB_GENERIC
153 * include the OpenGL 2.0+ GLSL generic shader attributes.
154 * These alias the generic GL_ARB_vertex_shader attributes.
155 */
156 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
157 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
158
159 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
160 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
161
162 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
163 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
164
165 /**
166 * Bitflags for vertex attributes.
167 * These are used in bitfields in many places.
168 */
169 /*@{*/
170 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
171 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
172 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
173 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
174 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
175 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
176 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
177 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
178 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
179 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
180 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
181 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
182 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
183 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
184 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
185 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
186 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
187 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
188
189 #define VERT_BIT(i) BITFIELD64_BIT(i)
190 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
191
192 #define VERT_BIT_FF(i) VERT_BIT(i)
193 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
194 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
195 #define VERT_BIT_TEX_ALL \
196 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
197
198 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
199 #define VERT_BIT_GENERIC_ALL \
200 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
201 /*@}*/
202
203
204 /**
205 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
206 * fragment shader inputs.
207 *
208 * Note that some of these values are not available to all pipeline stages.
209 *
210 * When this enum is updated, the following code must be updated too:
211 * - vertResults (in prog_print.c's arb_output_attrib_string())
212 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
213 * - _mesa_varying_slot_in_fs()
214 */
215 typedef enum
216 {
217 VARYING_SLOT_POS,
218 VARYING_SLOT_COL0, /* COL0 and COL1 must be contiguous */
219 VARYING_SLOT_COL1,
220 VARYING_SLOT_FOGC,
221 VARYING_SLOT_TEX0, /* TEX0-TEX7 must be contiguous */
222 VARYING_SLOT_TEX1,
223 VARYING_SLOT_TEX2,
224 VARYING_SLOT_TEX3,
225 VARYING_SLOT_TEX4,
226 VARYING_SLOT_TEX5,
227 VARYING_SLOT_TEX6,
228 VARYING_SLOT_TEX7,
229 VARYING_SLOT_PSIZ, /* Does not appear in FS */
230 VARYING_SLOT_BFC0, /* Does not appear in FS */
231 VARYING_SLOT_BFC1, /* Does not appear in FS */
232 VARYING_SLOT_EDGE, /* Does not appear in FS */
233 VARYING_SLOT_CLIP_VERTEX, /* Does not appear in FS */
234 VARYING_SLOT_CLIP_DIST0,
235 VARYING_SLOT_CLIP_DIST1,
236 VARYING_SLOT_PRIMITIVE_ID, /* Does not appear in VS */
237 VARYING_SLOT_LAYER, /* Appears as VS or GS output */
238 VARYING_SLOT_VIEWPORT, /* Appears as VS or GS output */
239 VARYING_SLOT_FACE, /* FS only */
240 VARYING_SLOT_PNTC, /* FS only */
241 VARYING_SLOT_VAR0, /* First generic varying slot */
242 VARYING_SLOT_MAX = VARYING_SLOT_VAR0 + MAX_VARYING
243 } gl_varying_slot;
244
245
246 /**
247 * Bitflags for varying slots.
248 */
249 /*@{*/
250 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
251 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
252 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
253 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
254 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
255 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
256 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
257 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
258 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
259 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
260 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
261 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
262 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
263 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
264 MAX_TEXTURE_COORD_UNITS)
265 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
266 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
267 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
268 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
269 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
270 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
271 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
272 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
273 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
274 #define VARYING_BIT_VIEWPORT BITFIELD64_BIT(VARYING_SLOT_VIEWPORT)
275 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
276 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
277 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
278 /*@}*/
279
280 /**
281 * Bitflags for system values.
282 */
283 #define SYSTEM_BIT_SAMPLE_ID BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_ID)
284 #define SYSTEM_BIT_SAMPLE_POS BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_POS)
285 #define SYSTEM_BIT_SAMPLE_MASK_IN BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_MASK_IN)
286
287 /**
288 * Determine if the given gl_varying_slot appears in the fragment shader.
289 */
290 static inline GLboolean
291 _mesa_varying_slot_in_fs(gl_varying_slot slot)
292 {
293 switch (slot) {
294 case VARYING_SLOT_PSIZ:
295 case VARYING_SLOT_BFC0:
296 case VARYING_SLOT_BFC1:
297 case VARYING_SLOT_EDGE:
298 case VARYING_SLOT_CLIP_VERTEX:
299 case VARYING_SLOT_LAYER:
300 return GL_FALSE;
301 default:
302 return GL_TRUE;
303 }
304 }
305
306
307 /**
308 * Fragment program results
309 */
310 typedef enum
311 {
312 FRAG_RESULT_DEPTH = 0,
313 FRAG_RESULT_STENCIL = 1,
314 /* If a single color should be written to all render targets, this
315 * register is written. No FRAG_RESULT_DATAn will be written.
316 */
317 FRAG_RESULT_COLOR = 2,
318 FRAG_RESULT_SAMPLE_MASK = 3,
319
320 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
321 * or ARB_fragment_program fragment.color[n]) color results. If
322 * any are written, FRAG_RESULT_COLOR will not be written.
323 */
324 FRAG_RESULT_DATA0 = 4,
325 FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
326 } gl_frag_result;
327
328
329 /**
330 * Indexes for all renderbuffers
331 */
332 typedef enum
333 {
334 /* the four standard color buffers */
335 BUFFER_FRONT_LEFT,
336 BUFFER_BACK_LEFT,
337 BUFFER_FRONT_RIGHT,
338 BUFFER_BACK_RIGHT,
339 BUFFER_DEPTH,
340 BUFFER_STENCIL,
341 BUFFER_ACCUM,
342 /* optional aux buffer */
343 BUFFER_AUX0,
344 /* generic renderbuffers */
345 BUFFER_COLOR0,
346 BUFFER_COLOR1,
347 BUFFER_COLOR2,
348 BUFFER_COLOR3,
349 BUFFER_COLOR4,
350 BUFFER_COLOR5,
351 BUFFER_COLOR6,
352 BUFFER_COLOR7,
353 BUFFER_COUNT
354 } gl_buffer_index;
355
356 /**
357 * Bit flags for all renderbuffers
358 */
359 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
360 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
361 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
362 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
363 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
364 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
365 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
366 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
367 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
368 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
369 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
370 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
371 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
372 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
373 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
374 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
375 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
376 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
377 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
378
379 /**
380 * Mask of all the color buffer bits (but not accum).
381 */
382 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
383 BUFFER_BIT_BACK_LEFT | \
384 BUFFER_BIT_FRONT_RIGHT | \
385 BUFFER_BIT_BACK_RIGHT | \
386 BUFFER_BIT_AUX0 | \
387 BUFFER_BIT_COLOR0 | \
388 BUFFER_BIT_COLOR1 | \
389 BUFFER_BIT_COLOR2 | \
390 BUFFER_BIT_COLOR3 | \
391 BUFFER_BIT_COLOR4 | \
392 BUFFER_BIT_COLOR5 | \
393 BUFFER_BIT_COLOR6 | \
394 BUFFER_BIT_COLOR7)
395
396
397 /**
398 * Shader stages. Note that these will become 5 with tessellation.
399 *
400 * The order must match how shaders are ordered in the pipeline.
401 * The GLSL linker assumes that if i<j, then the j-th shader is
402 * executed later than the i-th shader.
403 */
404 typedef enum
405 {
406 MESA_SHADER_VERTEX = 0,
407 MESA_SHADER_GEOMETRY = 1,
408 MESA_SHADER_FRAGMENT = 2,
409 } gl_shader_stage;
410
411 #define MESA_SHADER_STAGES (MESA_SHADER_FRAGMENT + 1)
412
413
414 /**
415 * Framebuffer configuration (aka visual / pixelformat)
416 * Note: some of these fields should be boolean, but it appears that
417 * code in drivers/dri/common/util.c requires int-sized fields.
418 */
419 struct gl_config
420 {
421 GLboolean rgbMode;
422 GLboolean floatMode;
423 GLboolean colorIndexMode; /* XXX is this used anywhere? */
424 GLuint doubleBufferMode;
425 GLuint stereoMode;
426
427 GLboolean haveAccumBuffer;
428 GLboolean haveDepthBuffer;
429 GLboolean haveStencilBuffer;
430
431 GLint redBits, greenBits, blueBits, alphaBits; /* bits per comp */
432 GLuint redMask, greenMask, blueMask, alphaMask;
433 GLint rgbBits; /* total bits for rgb */
434 GLint indexBits; /* total bits for colorindex */
435
436 GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
437 GLint depthBits;
438 GLint stencilBits;
439
440 GLint numAuxBuffers;
441
442 GLint level;
443
444 /* EXT_visual_rating / GLX 1.2 */
445 GLint visualRating;
446
447 /* EXT_visual_info / GLX 1.2 */
448 GLint transparentPixel;
449 /* colors are floats scaled to ints */
450 GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;
451 GLint transparentIndex;
452
453 /* ARB_multisample / SGIS_multisample */
454 GLint sampleBuffers;
455 GLint samples;
456
457 /* SGIX_pbuffer / GLX 1.3 */
458 GLint maxPbufferWidth;
459 GLint maxPbufferHeight;
460 GLint maxPbufferPixels;
461 GLint optimalPbufferWidth; /* Only for SGIX_pbuffer. */
462 GLint optimalPbufferHeight; /* Only for SGIX_pbuffer. */
463
464 /* OML_swap_method */
465 GLint swapMethod;
466
467 /* EXT_texture_from_pixmap */
468 GLint bindToTextureRgb;
469 GLint bindToTextureRgba;
470 GLint bindToMipmapTexture;
471 GLint bindToTextureTargets;
472 GLint yInverted;
473
474 /* EXT_framebuffer_sRGB */
475 GLint sRGBCapable;
476 };
477
478
479 /**
480 * \name Bit flags used for updating material values.
481 */
482 /*@{*/
483 #define MAT_ATTRIB_FRONT_AMBIENT 0
484 #define MAT_ATTRIB_BACK_AMBIENT 1
485 #define MAT_ATTRIB_FRONT_DIFFUSE 2
486 #define MAT_ATTRIB_BACK_DIFFUSE 3
487 #define MAT_ATTRIB_FRONT_SPECULAR 4
488 #define MAT_ATTRIB_BACK_SPECULAR 5
489 #define MAT_ATTRIB_FRONT_EMISSION 6
490 #define MAT_ATTRIB_BACK_EMISSION 7
491 #define MAT_ATTRIB_FRONT_SHININESS 8
492 #define MAT_ATTRIB_BACK_SHININESS 9
493 #define MAT_ATTRIB_FRONT_INDEXES 10
494 #define MAT_ATTRIB_BACK_INDEXES 11
495 #define MAT_ATTRIB_MAX 12
496
497 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
498 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
499 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
500 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
501 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
502 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
503
504 #define MAT_INDEX_AMBIENT 0
505 #define MAT_INDEX_DIFFUSE 1
506 #define MAT_INDEX_SPECULAR 2
507
508 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
509 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
510 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
511 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
512 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
513 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
514 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
515 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
516 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
517 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
518 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
519 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
520
521
522 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
523 MAT_BIT_FRONT_AMBIENT | \
524 MAT_BIT_FRONT_DIFFUSE | \
525 MAT_BIT_FRONT_SPECULAR | \
526 MAT_BIT_FRONT_SHININESS | \
527 MAT_BIT_FRONT_INDEXES)
528
529 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
530 MAT_BIT_BACK_AMBIENT | \
531 MAT_BIT_BACK_DIFFUSE | \
532 MAT_BIT_BACK_SPECULAR | \
533 MAT_BIT_BACK_SHININESS | \
534 MAT_BIT_BACK_INDEXES)
535
536 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
537 /*@}*/
538
539
540 /**
541 * Material state.
542 */
543 struct gl_material
544 {
545 GLfloat Attrib[MAT_ATTRIB_MAX][4];
546 };
547
548
549 /**
550 * Light state flags.
551 */
552 /*@{*/
553 #define LIGHT_SPOT 0x1
554 #define LIGHT_LOCAL_VIEWER 0x2
555 #define LIGHT_POSITIONAL 0x4
556 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
557 /*@}*/
558
559
560 /**
561 * Light source state.
562 */
563 struct gl_light
564 {
565 struct gl_light *next; /**< double linked list with sentinel */
566 struct gl_light *prev;
567
568 GLfloat Ambient[4]; /**< ambient color */
569 GLfloat Diffuse[4]; /**< diffuse color */
570 GLfloat Specular[4]; /**< specular color */
571 GLfloat EyePosition[4]; /**< position in eye coordinates */
572 GLfloat SpotDirection[4]; /**< spotlight direction in eye coordinates */
573 GLfloat SpotExponent;
574 GLfloat SpotCutoff; /**< in degrees */
575 GLfloat _CosCutoff; /**< = MAX(0, cos(SpotCutoff)) */
576 GLfloat ConstantAttenuation;
577 GLfloat LinearAttenuation;
578 GLfloat QuadraticAttenuation;
579 GLboolean Enabled; /**< On/off flag */
580
581 /**
582 * \name Derived fields
583 */
584 /*@{*/
585 GLbitfield _Flags; /**< Mask of LIGHT_x bits defined above */
586
587 GLfloat _Position[4]; /**< position in eye/obj coordinates */
588 GLfloat _VP_inf_norm[3]; /**< Norm direction to infinite light */
589 GLfloat _h_inf_norm[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
590 GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */
591 GLfloat _VP_inf_spot_attenuation;
592
593 GLfloat _MatAmbient[2][3]; /**< material ambient * light ambient */
594 GLfloat _MatDiffuse[2][3]; /**< material diffuse * light diffuse */
595 GLfloat _MatSpecular[2][3]; /**< material spec * light specular */
596 /*@}*/
597 };
598
599
600 /**
601 * Light model state.
602 */
603 struct gl_lightmodel
604 {
605 GLfloat Ambient[4]; /**< ambient color */
606 GLboolean LocalViewer; /**< Local (or infinite) view point? */
607 GLboolean TwoSide; /**< Two (or one) sided lighting? */
608 GLenum ColorControl; /**< either GL_SINGLE_COLOR
609 * or GL_SEPARATE_SPECULAR_COLOR */
610 };
611
612
613 /**
614 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
615 */
616 struct gl_accum_attrib
617 {
618 GLfloat ClearColor[4]; /**< Accumulation buffer clear color */
619 };
620
621
622 /**
623 * Used for storing clear color, texture border color, etc.
624 * The float values are typically unclamped.
625 */
626 union gl_color_union
627 {
628 GLfloat f[4];
629 GLint i[4];
630 GLuint ui[4];
631 };
632
633
634 /**
635 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
636 */
637 struct gl_colorbuffer_attrib
638 {
639 GLuint ClearIndex; /**< Index for glClear */
640 union gl_color_union ClearColor; /**< Color for glClear, unclamped */
641 GLuint IndexMask; /**< Color index write mask */
642 GLubyte ColorMask[MAX_DRAW_BUFFERS][4]; /**< Each flag is 0xff or 0x0 */
643
644 GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */
645
646 /**
647 * \name alpha testing
648 */
649 /*@{*/
650 GLboolean AlphaEnabled; /**< Alpha test enabled flag */
651 GLenum AlphaFunc; /**< Alpha test function */
652 GLfloat AlphaRefUnclamped;
653 GLclampf AlphaRef; /**< Alpha reference value */
654 /*@}*/
655
656 /**
657 * \name Blending
658 */
659 /*@{*/
660 GLbitfield BlendEnabled; /**< Per-buffer blend enable flags */
661
662 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
663 * control, only on the fixed-pointness of the render target.
664 * The query does however depend on fragment color clamping.
665 */
666 GLfloat BlendColorUnclamped[4]; /**< Blending color */
667 GLfloat BlendColor[4]; /**< Blending color */
668
669 struct
670 {
671 GLenum SrcRGB; /**< RGB blend source term */
672 GLenum DstRGB; /**< RGB blend dest term */
673 GLenum SrcA; /**< Alpha blend source term */
674 GLenum DstA; /**< Alpha blend dest term */
675 GLenum EquationRGB; /**< GL_ADD, GL_SUBTRACT, etc. */
676 GLenum EquationA; /**< GL_ADD, GL_SUBTRACT, etc. */
677 /**
678 * Set if any blend factor uses SRC1. Computed at the time blend factors
679 * get set.
680 */
681 GLboolean _UsesDualSrc;
682 } Blend[MAX_DRAW_BUFFERS];
683 /** Are the blend func terms currently different for each buffer/target? */
684 GLboolean _BlendFuncPerBuffer;
685 /** Are the blend equations currently different for each buffer/target? */
686 GLboolean _BlendEquationPerBuffer;
687 /*@}*/
688
689 /**
690 * \name Logic op
691 */
692 /*@{*/
693 GLenum LogicOp; /**< Logic operator */
694 GLboolean IndexLogicOpEnabled; /**< Color index logic op enabled flag */
695 GLboolean ColorLogicOpEnabled; /**< RGBA logic op enabled flag */
696 /*@}*/
697
698 GLboolean DitherFlag; /**< Dither enable flag */
699
700 GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
701 GLboolean _ClampFragmentColor; /** < with GL_FIXED_ONLY_ARB resolved */
702 GLenum ClampReadColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
703
704 GLboolean sRGBEnabled; /**< Framebuffer sRGB blending/updating requested */
705 };
706
707
708 /**
709 * Current attribute group (GL_CURRENT_BIT).
710 */
711 struct gl_current_attrib
712 {
713 /**
714 * \name Current vertex attributes.
715 * \note Values are valid only after FLUSH_VERTICES has been called.
716 * \note Index and Edgeflag current values are stored as floats in the
717 * SIX and SEVEN attribute slots.
718 */
719 GLfloat Attrib[VERT_ATTRIB_MAX][4]; /**< Position, color, texcoords, etc */
720
721 /**
722 * \name Current raster position attributes (always valid).
723 * \note This set of attributes is very similar to the SWvertex struct.
724 */
725 /*@{*/
726 GLfloat RasterPos[4];
727 GLfloat RasterDistance;
728 GLfloat RasterColor[4];
729 GLfloat RasterSecondaryColor[4];
730 GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];
731 GLboolean RasterPosValid;
732 /*@}*/
733 };
734
735
736 /**
737 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
738 */
739 struct gl_depthbuffer_attrib
740 {
741 GLenum Func; /**< Function for depth buffer compare */
742 GLclampd Clear; /**< Value to clear depth buffer to */
743 GLboolean Test; /**< Depth buffering enabled flag */
744 GLboolean Mask; /**< Depth buffer writable? */
745 GLboolean BoundsTest; /**< GL_EXT_depth_bounds_test */
746 GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
747 };
748
749
750 /**
751 * Evaluator attribute group (GL_EVAL_BIT).
752 */
753 struct gl_eval_attrib
754 {
755 /**
756 * \name Enable bits
757 */
758 /*@{*/
759 GLboolean Map1Color4;
760 GLboolean Map1Index;
761 GLboolean Map1Normal;
762 GLboolean Map1TextureCoord1;
763 GLboolean Map1TextureCoord2;
764 GLboolean Map1TextureCoord3;
765 GLboolean Map1TextureCoord4;
766 GLboolean Map1Vertex3;
767 GLboolean Map1Vertex4;
768 GLboolean Map2Color4;
769 GLboolean Map2Index;
770 GLboolean Map2Normal;
771 GLboolean Map2TextureCoord1;
772 GLboolean Map2TextureCoord2;
773 GLboolean Map2TextureCoord3;
774 GLboolean Map2TextureCoord4;
775 GLboolean Map2Vertex3;
776 GLboolean Map2Vertex4;
777 GLboolean AutoNormal;
778 /*@}*/
779
780 /**
781 * \name Map Grid endpoints and divisions and calculated du values
782 */
783 /*@{*/
784 GLint MapGrid1un;
785 GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
786 GLint MapGrid2un, MapGrid2vn;
787 GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
788 GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
789 /*@}*/
790 };
791
792
793 /**
794 * Fog attribute group (GL_FOG_BIT).
795 */
796 struct gl_fog_attrib
797 {
798 GLboolean Enabled; /**< Fog enabled flag */
799 GLfloat ColorUnclamped[4]; /**< Fog color */
800 GLfloat Color[4]; /**< Fog color */
801 GLfloat Density; /**< Density >= 0.0 */
802 GLfloat Start; /**< Start distance in eye coords */
803 GLfloat End; /**< End distance in eye coords */
804 GLfloat Index; /**< Fog index */
805 GLenum Mode; /**< Fog mode */
806 GLboolean ColorSumEnabled;
807 GLenum FogCoordinateSource; /**< GL_EXT_fog_coord */
808 GLfloat _Scale; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
809 GLenum FogDistanceMode; /**< GL_NV_fog_distance */
810 };
811
812
813 /**
814 * Hint attribute group (GL_HINT_BIT).
815 *
816 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
817 */
818 struct gl_hint_attrib
819 {
820 GLenum PerspectiveCorrection;
821 GLenum PointSmooth;
822 GLenum LineSmooth;
823 GLenum PolygonSmooth;
824 GLenum Fog;
825 GLenum TextureCompression; /**< GL_ARB_texture_compression */
826 GLenum GenerateMipmap; /**< GL_SGIS_generate_mipmap */
827 GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */
828 };
829
830
831 /**
832 * Lighting attribute group (GL_LIGHT_BIT).
833 */
834 struct gl_light_attrib
835 {
836 struct gl_light Light[MAX_LIGHTS]; /**< Array of light sources */
837 struct gl_lightmodel Model; /**< Lighting model */
838
839 /**
840 * Front and back material values.
841 * Note: must call FLUSH_VERTICES() before using.
842 */
843 struct gl_material Material;
844
845 GLboolean Enabled; /**< Lighting enabled flag */
846 GLenum ShadeModel; /**< GL_FLAT or GL_SMOOTH */
847 GLenum ProvokingVertex; /**< GL_EXT_provoking_vertex */
848 GLenum ColorMaterialFace; /**< GL_FRONT, BACK or FRONT_AND_BACK */
849 GLenum ColorMaterialMode; /**< GL_AMBIENT, GL_DIFFUSE, etc */
850 GLbitfield _ColorMaterialBitmask; /**< bitmask formed from Face and Mode */
851 GLboolean ColorMaterialEnabled;
852 GLenum ClampVertexColor; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
853 GLboolean _ClampVertexColor;
854
855 struct gl_light EnabledList; /**< List sentinel */
856
857 /**
858 * Derived state for optimizations:
859 */
860 /*@{*/
861 GLboolean _NeedEyeCoords;
862 GLboolean _NeedVertices; /**< Use fast shader? */
863 GLfloat _BaseColor[2][3];
864 /*@}*/
865 };
866
867
868 /**
869 * Line attribute group (GL_LINE_BIT).
870 */
871 struct gl_line_attrib
872 {
873 GLboolean SmoothFlag; /**< GL_LINE_SMOOTH enabled? */
874 GLboolean StippleFlag; /**< GL_LINE_STIPPLE enabled? */
875 GLushort StipplePattern; /**< Stipple pattern */
876 GLint StippleFactor; /**< Stipple repeat factor */
877 GLfloat Width; /**< Line width */
878 };
879
880
881 /**
882 * Display list attribute group (GL_LIST_BIT).
883 */
884 struct gl_list_attrib
885 {
886 GLuint ListBase;
887 };
888
889
890 /**
891 * Multisample attribute group (GL_MULTISAMPLE_BIT).
892 */
893 struct gl_multisample_attrib
894 {
895 GLboolean Enabled;
896 GLboolean _Enabled; /**< true if Enabled and multisample buffer */
897 GLboolean SampleAlphaToCoverage;
898 GLboolean SampleAlphaToOne;
899 GLboolean SampleCoverage;
900 GLfloat SampleCoverageValue;
901 GLboolean SampleCoverageInvert;
902 GLboolean SampleShading;
903 GLfloat MinSampleShadingValue;
904
905 /* ARB_texture_multisample / GL3.2 additions */
906 GLboolean SampleMask;
907 /** The GL spec defines this as an array but >32x MSAA is madness */
908 GLbitfield SampleMaskValue;
909 };
910
911
912 /**
913 * A pixelmap (see glPixelMap)
914 */
915 struct gl_pixelmap
916 {
917 GLint Size;
918 GLfloat Map[MAX_PIXEL_MAP_TABLE];
919 };
920
921
922 /**
923 * Collection of all pixelmaps
924 */
925 struct gl_pixelmaps
926 {
927 struct gl_pixelmap RtoR; /**< i.e. GL_PIXEL_MAP_R_TO_R */
928 struct gl_pixelmap GtoG;
929 struct gl_pixelmap BtoB;
930 struct gl_pixelmap AtoA;
931 struct gl_pixelmap ItoR;
932 struct gl_pixelmap ItoG;
933 struct gl_pixelmap ItoB;
934 struct gl_pixelmap ItoA;
935 struct gl_pixelmap ItoI;
936 struct gl_pixelmap StoS;
937 };
938
939
940 /**
941 * Pixel attribute group (GL_PIXEL_MODE_BIT).
942 */
943 struct gl_pixel_attrib
944 {
945 GLenum ReadBuffer; /**< source buffer for glRead/CopyPixels() */
946
947 /*--- Begin Pixel Transfer State ---*/
948 /* Fields are in the order in which they're applied... */
949
950 /** Scale & Bias (index shift, offset) */
951 /*@{*/
952 GLfloat RedBias, RedScale;
953 GLfloat GreenBias, GreenScale;
954 GLfloat BlueBias, BlueScale;
955 GLfloat AlphaBias, AlphaScale;
956 GLfloat DepthBias, DepthScale;
957 GLint IndexShift, IndexOffset;
958 /*@}*/
959
960 /* Pixel Maps */
961 /* Note: actual pixel maps are not part of this attrib group */
962 GLboolean MapColorFlag;
963 GLboolean MapStencilFlag;
964
965 /*--- End Pixel Transfer State ---*/
966
967 /** glPixelZoom */
968 GLfloat ZoomX, ZoomY;
969 };
970
971
972 /**
973 * Point attribute group (GL_POINT_BIT).
974 */
975 struct gl_point_attrib
976 {
977 GLboolean SmoothFlag; /**< True if GL_POINT_SMOOTH is enabled */
978 GLfloat Size; /**< User-specified point size */
979 GLfloat Params[3]; /**< GL_EXT_point_parameters */
980 GLfloat MinSize, MaxSize; /**< GL_EXT_point_parameters */
981 GLfloat Threshold; /**< GL_EXT_point_parameters */
982 GLboolean _Attenuated; /**< True if Params != [1, 0, 0] */
983 GLboolean PointSprite; /**< GL_NV/ARB_point_sprite */
984 GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/
985 GLenum SpriteRMode; /**< GL_NV_point_sprite (only!) */
986 GLenum SpriteOrigin; /**< GL_ARB_point_sprite */
987 };
988
989
990 /**
991 * Polygon attribute group (GL_POLYGON_BIT).
992 */
993 struct gl_polygon_attrib
994 {
995 GLenum FrontFace; /**< Either GL_CW or GL_CCW */
996 GLenum FrontMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
997 GLenum BackMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
998 GLboolean _FrontBit; /**< 0=GL_CCW, 1=GL_CW */
999 GLboolean CullFlag; /**< Culling on/off flag */
1000 GLboolean SmoothFlag; /**< True if GL_POLYGON_SMOOTH is enabled */
1001 GLboolean StippleFlag; /**< True if GL_POLYGON_STIPPLE is enabled */
1002 GLenum CullFaceMode; /**< Culling mode GL_FRONT or GL_BACK */
1003 GLfloat OffsetFactor; /**< Polygon offset factor, from user */
1004 GLfloat OffsetUnits; /**< Polygon offset units, from user */
1005 GLboolean OffsetPoint; /**< Offset in GL_POINT mode */
1006 GLboolean OffsetLine; /**< Offset in GL_LINE mode */
1007 GLboolean OffsetFill; /**< Offset in GL_FILL mode */
1008 };
1009
1010
1011 /**
1012 * Scissor attributes (GL_SCISSOR_BIT).
1013 */
1014 struct gl_scissor_rect
1015 {
1016 GLint X, Y; /**< Lower left corner of box */
1017 GLsizei Width, Height; /**< Size of box */
1018 };
1019 struct gl_scissor_attrib
1020 {
1021 GLbitfield EnableFlags; /**< Scissor test enabled? */
1022 struct gl_scissor_rect ScissorArray[MAX_VIEWPORTS];
1023 };
1024
1025
1026 /**
1027 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1028 *
1029 * Three sets of stencil data are tracked so that OpenGL 2.0,
1030 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1031 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1032 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1033 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1034 * GL_EXT_stencil_two_side GL_BACK state.
1035 *
1036 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1037 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1038 *
1039 * The derived value \c _TestTwoSide is set when the front-face and back-face
1040 * stencil state are different.
1041 */
1042 struct gl_stencil_attrib
1043 {
1044 GLboolean Enabled; /**< Enabled flag */
1045 GLboolean TestTwoSide; /**< GL_EXT_stencil_two_side */
1046 GLubyte ActiveFace; /**< GL_EXT_stencil_two_side (0 or 2) */
1047 GLboolean _Enabled; /**< Enabled and stencil buffer present */
1048 GLboolean _WriteEnabled; /**< _Enabled and non-zero writemasks */
1049 GLboolean _TestTwoSide;
1050 GLubyte _BackFace; /**< Current back stencil state (1 or 2) */
1051 GLenum Function[3]; /**< Stencil function */
1052 GLenum FailFunc[3]; /**< Fail function */
1053 GLenum ZPassFunc[3]; /**< Depth buffer pass function */
1054 GLenum ZFailFunc[3]; /**< Depth buffer fail function */
1055 GLint Ref[3]; /**< Reference value */
1056 GLuint ValueMask[3]; /**< Value mask */
1057 GLuint WriteMask[3]; /**< Write mask */
1058 GLuint Clear; /**< Clear value */
1059 };
1060
1061
1062 /**
1063 * An index for each type of texture object. These correspond to the GL
1064 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1065 * Note: the order is from highest priority to lowest priority.
1066 */
1067 typedef enum
1068 {
1069 TEXTURE_2D_MULTISAMPLE_INDEX,
1070 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX,
1071 TEXTURE_CUBE_ARRAY_INDEX,
1072 TEXTURE_BUFFER_INDEX,
1073 TEXTURE_2D_ARRAY_INDEX,
1074 TEXTURE_1D_ARRAY_INDEX,
1075 TEXTURE_EXTERNAL_INDEX,
1076 TEXTURE_CUBE_INDEX,
1077 TEXTURE_3D_INDEX,
1078 TEXTURE_RECT_INDEX,
1079 TEXTURE_2D_INDEX,
1080 TEXTURE_1D_INDEX,
1081 NUM_TEXTURE_TARGETS
1082 } gl_texture_index;
1083
1084
1085 /**
1086 * Bit flags for each type of texture object
1087 * Used for Texture.Unit[]._ReallyEnabled flags.
1088 */
1089 /*@{*/
1090 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1091 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1092 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1093 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1094 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1095 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1096 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1097 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1098 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1099 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1100 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1101 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1102 /*@}*/
1103
1104
1105 /**
1106 * Texture image state. Drivers will typically create a subclass of this
1107 * with extra fields for memory buffers, etc.
1108 */
1109 struct gl_texture_image
1110 {
1111 GLint InternalFormat; /**< Internal format as given by the user */
1112 GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1113 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1114 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1115 * GL_DEPTH_STENCIL_EXT only. Used for
1116 * choosing TexEnv arithmetic.
1117 */
1118 gl_format TexFormat; /**< The actual texture memory format */
1119
1120 GLuint Border; /**< 0 or 1 */
1121 GLuint Width; /**< = 2^WidthLog2 + 2*Border */
1122 GLuint Height; /**< = 2^HeightLog2 + 2*Border */
1123 GLuint Depth; /**< = 2^DepthLog2 + 2*Border */
1124 GLuint Width2; /**< = Width - 2*Border */
1125 GLuint Height2; /**< = Height - 2*Border */
1126 GLuint Depth2; /**< = Depth - 2*Border */
1127 GLuint WidthLog2; /**< = log2(Width2) */
1128 GLuint HeightLog2; /**< = log2(Height2) */
1129 GLuint DepthLog2; /**< = log2(Depth2) */
1130 GLuint MaxNumLevels; /**< = maximum possible number of mipmap
1131 levels, computed from the dimensions */
1132
1133 struct gl_texture_object *TexObject; /**< Pointer back to parent object */
1134 GLuint Level; /**< Which mipmap level am I? */
1135 /** Cube map face: index into gl_texture_object::Image[] array */
1136 GLuint Face;
1137
1138 /** GL_ARB_texture_multisample */
1139 GLuint NumSamples; /**< Sample count, or 0 for non-multisample */
1140 GLboolean FixedSampleLocations; /**< Same sample locations for all pixels? */
1141 };
1142
1143
1144 /**
1145 * Indexes for cube map faces.
1146 */
1147 typedef enum
1148 {
1149 FACE_POS_X = 0,
1150 FACE_NEG_X = 1,
1151 FACE_POS_Y = 2,
1152 FACE_NEG_Y = 3,
1153 FACE_POS_Z = 4,
1154 FACE_NEG_Z = 5,
1155 MAX_FACES = 6
1156 } gl_face_index;
1157
1158
1159 /**
1160 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1161 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1162 */
1163 struct gl_sampler_object
1164 {
1165 GLuint Name;
1166 GLint RefCount;
1167 GLchar *Label; /**< GL_KHR_debug */
1168
1169 GLenum WrapS; /**< S-axis texture image wrap mode */
1170 GLenum WrapT; /**< T-axis texture image wrap mode */
1171 GLenum WrapR; /**< R-axis texture image wrap mode */
1172 GLenum MinFilter; /**< minification filter */
1173 GLenum MagFilter; /**< magnification filter */
1174 union gl_color_union BorderColor; /**< Interpreted according to texture format */
1175 GLfloat MinLod; /**< min lambda, OpenGL 1.2 */
1176 GLfloat MaxLod; /**< max lambda, OpenGL 1.2 */
1177 GLfloat LodBias; /**< OpenGL 1.4 */
1178 GLfloat MaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
1179 GLenum CompareMode; /**< GL_ARB_shadow */
1180 GLenum CompareFunc; /**< GL_ARB_shadow */
1181 GLenum sRGBDecode; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1182 GLboolean CubeMapSeamless; /**< GL_AMD_seamless_cubemap_per_texture */
1183 };
1184
1185
1186 /**
1187 * Texture object state. Contains the array of mipmap images, border color,
1188 * wrap modes, filter modes, and shadow/texcompare state.
1189 */
1190 struct gl_texture_object
1191 {
1192 _glthread_Mutex Mutex; /**< for thread safety */
1193 GLint RefCount; /**< reference count */
1194 GLuint Name; /**< the user-visible texture object ID */
1195 GLchar *Label; /**< GL_KHR_debug */
1196 GLenum Target; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1197
1198 struct gl_sampler_object Sampler;
1199
1200 GLenum DepthMode; /**< GL_ARB_depth_texture */
1201
1202 GLfloat Priority; /**< in [0,1] */
1203 GLint BaseLevel; /**< min mipmap level, OpenGL 1.2 */
1204 GLint MaxLevel; /**< max mipmap level, OpenGL 1.2 */
1205 GLint ImmutableLevels; /**< ES 3.0 / ARB_texture_view */
1206 GLint _MaxLevel; /**< actual max mipmap level (q in the spec) */
1207 GLfloat _MaxLambda; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1208 GLint CropRect[4]; /**< GL_OES_draw_texture */
1209 GLenum Swizzle[4]; /**< GL_EXT_texture_swizzle */
1210 GLuint _Swizzle; /**< same as Swizzle, but SWIZZLE_* format */
1211 GLboolean GenerateMipmap; /**< GL_SGIS_generate_mipmap */
1212 GLboolean _BaseComplete; /**< Is the base texture level valid? */
1213 GLboolean _MipmapComplete; /**< Is the whole mipmap valid? */
1214 GLboolean _IsIntegerFormat; /**< Does the texture store integer values? */
1215 GLboolean _RenderToTexture; /**< Any rendering to this texture? */
1216 GLboolean Purgeable; /**< Is the buffer purgeable under memory
1217 pressure? */
1218 GLboolean Immutable; /**< GL_ARB_texture_storage */
1219
1220 GLuint MinLevel; /**< GL_ARB_texture_view */
1221 GLuint MinLayer; /**< GL_ARB_texture_view */
1222 GLuint NumLevels; /**< GL_ARB_texture_view */
1223 GLuint NumLayers; /**< GL_ARB_texture_view */
1224
1225 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1226 struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
1227
1228 /** GL_ARB_texture_buffer_object */
1229 struct gl_buffer_object *BufferObject;
1230 GLenum BufferObjectFormat;
1231 /** Equivalent Mesa format for BufferObjectFormat. */
1232 gl_format _BufferObjectFormat;
1233 /** GL_ARB_texture_buffer_range */
1234 GLintptr BufferOffset;
1235 GLsizeiptr BufferSize; /**< if this is -1, use BufferObject->Size instead */
1236
1237 /** GL_OES_EGL_image_external */
1238 GLint RequiredTextureImageUnits;
1239
1240 /** GL_ARB_shader_image_load_store */
1241 GLenum ImageFormatCompatibilityType;
1242 };
1243
1244
1245 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1246 #define MAX_COMBINER_TERMS 4
1247
1248
1249 /**
1250 * Texture combine environment state.
1251 */
1252 struct gl_tex_env_combine_state
1253 {
1254 GLenum ModeRGB; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1255 GLenum ModeA; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1256 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1257 GLenum SourceRGB[MAX_COMBINER_TERMS];
1258 GLenum SourceA[MAX_COMBINER_TERMS];
1259 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1260 GLenum OperandRGB[MAX_COMBINER_TERMS];
1261 GLenum OperandA[MAX_COMBINER_TERMS];
1262 GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
1263 GLuint ScaleShiftA; /**< 0, 1 or 2 */
1264 GLuint _NumArgsRGB; /**< Number of inputs used for the RGB combiner */
1265 GLuint _NumArgsA; /**< Number of inputs used for the A combiner */
1266 };
1267
1268
1269 /**
1270 * TexGenEnabled flags.
1271 */
1272 /*@{*/
1273 #define S_BIT 1
1274 #define T_BIT 2
1275 #define R_BIT 4
1276 #define Q_BIT 8
1277 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1278 /*@}*/
1279
1280
1281 /**
1282 * Bit flag versions of the corresponding GL_ constants.
1283 */
1284 /*@{*/
1285 #define TEXGEN_SPHERE_MAP 0x1
1286 #define TEXGEN_OBJ_LINEAR 0x2
1287 #define TEXGEN_EYE_LINEAR 0x4
1288 #define TEXGEN_REFLECTION_MAP_NV 0x8
1289 #define TEXGEN_NORMAL_MAP_NV 0x10
1290
1291 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1292 TEXGEN_REFLECTION_MAP_NV | \
1293 TEXGEN_NORMAL_MAP_NV)
1294 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1295 TEXGEN_REFLECTION_MAP_NV | \
1296 TEXGEN_NORMAL_MAP_NV | \
1297 TEXGEN_EYE_LINEAR)
1298 /*@}*/
1299
1300
1301
1302 /** Tex-gen enabled for texture unit? */
1303 #define ENABLE_TEXGEN(unit) (1 << (unit))
1304
1305 /** Non-identity texture matrix for texture unit? */
1306 #define ENABLE_TEXMAT(unit) (1 << (unit))
1307
1308
1309 /**
1310 * Texture coord generation state.
1311 */
1312 struct gl_texgen
1313 {
1314 GLenum Mode; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1315 GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
1316 GLfloat ObjectPlane[4];
1317 GLfloat EyePlane[4];
1318 };
1319
1320
1321 /**
1322 * Texture unit state. Contains enable flags, texture environment/function/
1323 * combiners, texgen state, and pointers to current texture objects.
1324 */
1325 struct gl_texture_unit
1326 {
1327 GLbitfield Enabled; /**< bitmask of TEXTURE_*_BIT flags */
1328 GLbitfield _ReallyEnabled; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1329
1330 GLenum EnvMode; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1331 GLclampf EnvColor[4];
1332 GLfloat EnvColorUnclamped[4];
1333
1334 struct gl_texgen GenS;
1335 struct gl_texgen GenT;
1336 struct gl_texgen GenR;
1337 struct gl_texgen GenQ;
1338 GLbitfield TexGenEnabled; /**< Bitwise-OR of [STRQ]_BIT values */
1339 GLbitfield _GenFlags; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1340
1341 GLfloat LodBias; /**< for biasing mipmap levels */
1342 GLenum BumpTarget;
1343 GLfloat RotMatrix[4]; /* 2x2 matrix */
1344
1345 /** Current sampler object (GL_ARB_sampler_objects) */
1346 struct gl_sampler_object *Sampler;
1347
1348 /**
1349 * \name GL_EXT_texture_env_combine
1350 */
1351 struct gl_tex_env_combine_state Combine;
1352
1353 /**
1354 * Derived state based on \c EnvMode and the \c BaseFormat of the
1355 * currently enabled texture.
1356 */
1357 struct gl_tex_env_combine_state _EnvMode;
1358
1359 /**
1360 * Currently enabled combiner state. This will point to either
1361 * \c Combine or \c _EnvMode.
1362 */
1363 struct gl_tex_env_combine_state *_CurrentCombine;
1364
1365 /** Current texture object pointers */
1366 struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS];
1367
1368 /** Points to highest priority, complete and enabled texture object */
1369 struct gl_texture_object *_Current;
1370 };
1371
1372
1373 /**
1374 * Texture attribute group (GL_TEXTURE_BIT).
1375 */
1376 struct gl_texture_attrib
1377 {
1378 GLuint CurrentUnit; /**< GL_ACTIVE_TEXTURE */
1379 struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
1380
1381 struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
1382
1383 /** GL_ARB_texture_buffer_object */
1384 struct gl_buffer_object *BufferObject;
1385
1386 /** GL_ARB_seamless_cubemap */
1387 GLboolean CubeMapSeamless;
1388
1389 /** Texture units/samplers used by vertex or fragment texturing */
1390 GLbitfield _EnabledUnits;
1391
1392 /** Texture coord units/sets used for fragment texturing */
1393 GLbitfield _EnabledCoordUnits;
1394
1395 /** Texture coord units that have texgen enabled */
1396 GLbitfield _TexGenEnabled;
1397
1398 /** Texture coord units that have non-identity matrices */
1399 GLbitfield _TexMatEnabled;
1400
1401 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1402 GLbitfield _GenFlags;
1403 };
1404
1405
1406 /**
1407 * Data structure representing a single clip plane (e.g. one of the elements
1408 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1409 */
1410 typedef GLfloat gl_clip_plane[4];
1411
1412
1413 /**
1414 * Transformation attribute group (GL_TRANSFORM_BIT).
1415 */
1416 struct gl_transform_attrib
1417 {
1418 GLenum MatrixMode; /**< Matrix mode */
1419 gl_clip_plane EyeUserPlane[MAX_CLIP_PLANES]; /**< User clip planes */
1420 gl_clip_plane _ClipUserPlane[MAX_CLIP_PLANES]; /**< derived */
1421 GLbitfield ClipPlanesEnabled; /**< on/off bitmask */
1422 GLboolean Normalize; /**< Normalize all normals? */
1423 GLboolean RescaleNormals; /**< GL_EXT_rescale_normal */
1424 GLboolean RasterPositionUnclipped; /**< GL_IBM_rasterpos_clip */
1425 GLboolean DepthClamp; /**< GL_ARB_depth_clamp */
1426
1427 GLfloat CullEyePos[4];
1428 GLfloat CullObjPos[4];
1429 };
1430
1431
1432 /**
1433 * Viewport attribute group (GL_VIEWPORT_BIT).
1434 */
1435 struct gl_viewport_attrib
1436 {
1437 GLfloat X, Y; /**< position */
1438 GLfloat Width, Height; /**< size */
1439 GLdouble Near, Far; /**< Depth buffer range */
1440 GLmatrix _WindowMap; /**< Mapping transformation as a matrix. */
1441 };
1442
1443
1444 /**
1445 * GL_ARB_vertex/pixel_buffer_object buffer object
1446 */
1447 struct gl_buffer_object
1448 {
1449 _glthread_Mutex Mutex;
1450 GLint RefCount;
1451 GLuint Name;
1452 GLchar *Label; /**< GL_KHR_debug */
1453 GLenum Usage; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1454 GLsizeiptrARB Size; /**< Size of buffer storage in bytes */
1455 GLubyte *Data; /**< Location of storage either in RAM or VRAM. */
1456 /** Fields describing a mapped buffer */
1457 /*@{*/
1458 GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */
1459 GLvoid *Pointer; /**< User-space address of mapping */
1460 GLintptr Offset; /**< Mapped offset */
1461 GLsizeiptr Length; /**< Mapped length */
1462 /*@}*/
1463 GLboolean DeletePending; /**< true if buffer object is removed from the hash */
1464 GLboolean Written; /**< Ever written to? (for debugging) */
1465 GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
1466 };
1467
1468
1469 /**
1470 * Client pixel packing/unpacking attributes
1471 */
1472 struct gl_pixelstore_attrib
1473 {
1474 GLint Alignment;
1475 GLint RowLength;
1476 GLint SkipPixels;
1477 GLint SkipRows;
1478 GLint ImageHeight;
1479 GLint SkipImages;
1480 GLboolean SwapBytes;
1481 GLboolean LsbFirst;
1482 GLboolean Invert; /**< GL_MESA_pack_invert */
1483 struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
1484 };
1485
1486
1487 /**
1488 * Client vertex array attributes
1489 */
1490 struct gl_client_array
1491 {
1492 GLint Size; /**< components per element (1,2,3,4) */
1493 GLenum Type; /**< datatype: GL_FLOAT, GL_INT, etc */
1494 GLenum Format; /**< default: GL_RGBA, but may be GL_BGRA */
1495 GLsizei Stride; /**< user-specified stride */
1496 GLsizei StrideB; /**< actual stride in bytes */
1497 const GLubyte *Ptr; /**< Points to array data */
1498 GLboolean Enabled; /**< Enabled flag is a boolean */
1499 GLboolean Normalized; /**< GL_ARB_vertex_program */
1500 GLboolean Integer; /**< Integer-valued? */
1501 GLuint InstanceDivisor; /**< GL_ARB_instanced_arrays */
1502 GLuint _ElementSize; /**< size of each element in bytes */
1503
1504 struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */
1505 GLuint _MaxElement; /**< max element index into array buffer + 1 */
1506 };
1507
1508
1509 /**
1510 * Vertex attribute array as seen by the client.
1511 *
1512 * Contains the size, type, format and normalization flag,
1513 * along with the index of a vertex buffer binding point.
1514 *
1515 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1516 * and is only present for backwards compatibility reasons.
1517 * Rendering always uses VERTEX_BINDING_STRIDE.
1518 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1519 * and VERTEX_BINDING_STRIDE to the same value, while
1520 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1521 */
1522 struct gl_vertex_attrib_array
1523 {
1524 GLint Size; /**< Components per element (1,2,3,4) */
1525 GLenum Type; /**< Datatype: GL_FLOAT, GL_INT, etc */
1526 GLenum Format; /**< Default: GL_RGBA, but may be GL_BGRA */
1527 GLsizei Stride; /**< Stride as specified with gl*Pointer() */
1528 const GLubyte *Ptr; /**< Points to client array data. Not used when a VBO is bound */
1529 GLintptr RelativeOffset; /**< Offset of the first element relative to the binding offset */
1530 GLboolean Enabled; /**< Whether the array is enabled */
1531 GLboolean Normalized; /**< Fixed-point values are normalized when converted to floats */
1532 GLboolean Integer; /**< Fixed-point values are not converted to floats */
1533 GLuint _ElementSize; /**< Size of each element in bytes */
1534 GLuint VertexBinding; /**< Vertex buffer binding */
1535 };
1536
1537
1538 /**
1539 * This describes the buffer object used for a vertex array (or
1540 * multiple vertex arrays). If BufferObj points to the default/null
1541 * buffer object, then the vertex array lives in user memory and not a VBO.
1542 */
1543 struct gl_vertex_buffer_binding
1544 {
1545 GLintptr Offset; /**< User-specified offset */
1546 GLsizei Stride; /**< User-specified stride */
1547 GLuint InstanceDivisor; /**< GL_ARB_instanced_arrays */
1548 struct gl_buffer_object *BufferObj; /**< GL_ARB_vertex_buffer_object */
1549 GLbitfield64 _BoundArrays; /**< Arrays bound to this binding point */
1550 };
1551
1552
1553 /**
1554 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1555 * extension, but a nice encapsulation in any case.
1556 */
1557 struct gl_array_object
1558 {
1559 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1560 GLuint Name;
1561 GLchar *Label; /**< GL_KHR_debug */
1562
1563 GLint RefCount;
1564 _glthread_Mutex Mutex;
1565
1566 /**
1567 * Does the VAO use ARB semantics or Apple semantics?
1568 *
1569 * There are several ways in which ARB_vertex_array_object and
1570 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1571 * least,
1572 *
1573 * - ARB VAOs require that all array data be sourced from vertex buffer
1574 * objects, but Apple VAOs do not.
1575 *
1576 * - ARB VAOs require that names come from GenVertexArrays.
1577 *
1578 * This flag notes which behavior governs this VAO.
1579 */
1580 GLboolean ARBsemantics;
1581
1582 /**
1583 * Has this array object been bound?
1584 */
1585 GLboolean EverBound;
1586
1587 /** Derived vertex attribute arrays */
1588 struct gl_client_array _VertexAttrib[VERT_ATTRIB_MAX];
1589
1590 /** Vertex attribute arrays */
1591 struct gl_vertex_attrib_array VertexAttrib[VERT_ATTRIB_MAX];
1592
1593 /** Vertex buffer bindings */
1594 struct gl_vertex_buffer_binding VertexBinding[VERT_ATTRIB_MAX];
1595
1596 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1597 GLbitfield64 _Enabled;
1598
1599 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1600 GLbitfield64 NewArrays;
1601
1602 /**
1603 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1604 * we can determine the max legal (in bounds) glDrawElements array index.
1605 */
1606 GLuint _MaxElement;
1607
1608 struct gl_buffer_object *ElementArrayBufferObj;
1609 };
1610
1611
1612 /**
1613 * Vertex array state
1614 */
1615 struct gl_array_attrib
1616 {
1617 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1618 struct gl_array_object *ArrayObj;
1619
1620 /** The default vertex array object */
1621 struct gl_array_object *DefaultArrayObj;
1622
1623 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1624 struct _mesa_HashTable *Objects;
1625
1626 GLint ActiveTexture; /**< Client Active Texture */
1627 GLuint LockFirst; /**< GL_EXT_compiled_vertex_array */
1628 GLuint LockCount; /**< GL_EXT_compiled_vertex_array */
1629
1630 /**
1631 * \name Primitive restart controls
1632 *
1633 * Primitive restart is enabled if either \c PrimitiveRestart or
1634 * \c PrimitiveRestartFixedIndex is set.
1635 */
1636 /*@{*/
1637 GLboolean PrimitiveRestart;
1638 GLboolean PrimitiveRestartFixedIndex;
1639 GLboolean _PrimitiveRestart;
1640 GLuint RestartIndex;
1641 /*@}*/
1642
1643 /* GL_ARB_vertex_buffer_object */
1644 struct gl_buffer_object *ArrayBufferObj;
1645
1646 /**
1647 * Vertex arrays as consumed by a driver.
1648 * The array pointer is set up only by the VBO module.
1649 */
1650 const struct gl_client_array **_DrawArrays; /**< 0..VERT_ATTRIB_MAX-1 */
1651 };
1652
1653
1654 /**
1655 * Feedback buffer state
1656 */
1657 struct gl_feedback
1658 {
1659 GLenum Type;
1660 GLbitfield _Mask; /**< FB_* bits */
1661 GLfloat *Buffer;
1662 GLuint BufferSize;
1663 GLuint Count;
1664 };
1665
1666
1667 /**
1668 * Selection buffer state
1669 */
1670 struct gl_selection
1671 {
1672 GLuint *Buffer; /**< selection buffer */
1673 GLuint BufferSize; /**< size of the selection buffer */
1674 GLuint BufferCount; /**< number of values in the selection buffer */
1675 GLuint Hits; /**< number of records in the selection buffer */
1676 GLuint NameStackDepth; /**< name stack depth */
1677 GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
1678 GLboolean HitFlag; /**< hit flag */
1679 GLfloat HitMinZ; /**< minimum hit depth */
1680 GLfloat HitMaxZ; /**< maximum hit depth */
1681 };
1682
1683
1684 /**
1685 * 1-D Evaluator control points
1686 */
1687 struct gl_1d_map
1688 {
1689 GLuint Order; /**< Number of control points */
1690 GLfloat u1, u2, du; /**< u1, u2, 1.0/(u2-u1) */
1691 GLfloat *Points; /**< Points to contiguous control points */
1692 };
1693
1694
1695 /**
1696 * 2-D Evaluator control points
1697 */
1698 struct gl_2d_map
1699 {
1700 GLuint Uorder; /**< Number of control points in U dimension */
1701 GLuint Vorder; /**< Number of control points in V dimension */
1702 GLfloat u1, u2, du;
1703 GLfloat v1, v2, dv;
1704 GLfloat *Points; /**< Points to contiguous control points */
1705 };
1706
1707
1708 /**
1709 * All evaluator control point state
1710 */
1711 struct gl_evaluators
1712 {
1713 /**
1714 * \name 1-D maps
1715 */
1716 /*@{*/
1717 struct gl_1d_map Map1Vertex3;
1718 struct gl_1d_map Map1Vertex4;
1719 struct gl_1d_map Map1Index;
1720 struct gl_1d_map Map1Color4;
1721 struct gl_1d_map Map1Normal;
1722 struct gl_1d_map Map1Texture1;
1723 struct gl_1d_map Map1Texture2;
1724 struct gl_1d_map Map1Texture3;
1725 struct gl_1d_map Map1Texture4;
1726 /*@}*/
1727
1728 /**
1729 * \name 2-D maps
1730 */
1731 /*@{*/
1732 struct gl_2d_map Map2Vertex3;
1733 struct gl_2d_map Map2Vertex4;
1734 struct gl_2d_map Map2Index;
1735 struct gl_2d_map Map2Color4;
1736 struct gl_2d_map Map2Normal;
1737 struct gl_2d_map Map2Texture1;
1738 struct gl_2d_map Map2Texture2;
1739 struct gl_2d_map Map2Texture3;
1740 struct gl_2d_map Map2Texture4;
1741 /*@}*/
1742 };
1743
1744
1745 struct gl_transform_feedback_varying_info
1746 {
1747 char *Name;
1748 GLenum Type;
1749 GLint Size;
1750 };
1751
1752
1753 /**
1754 * Per-output info vertex shaders for transform feedback.
1755 */
1756 struct gl_transform_feedback_output
1757 {
1758 unsigned OutputRegister;
1759 unsigned OutputBuffer;
1760 unsigned NumComponents;
1761
1762 /** offset (in DWORDs) of this output within the interleaved structure */
1763 unsigned DstOffset;
1764
1765 /**
1766 * Offset into the output register of the data to output. For example,
1767 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1768 * offset is in the y and z components of the output register.
1769 */
1770 unsigned ComponentOffset;
1771 };
1772
1773
1774 /** Post-link transform feedback info. */
1775 struct gl_transform_feedback_info
1776 {
1777 unsigned NumOutputs;
1778
1779 /**
1780 * Number of transform feedback buffers in use by this program.
1781 */
1782 unsigned NumBuffers;
1783
1784 struct gl_transform_feedback_output *Outputs;
1785
1786 /** Transform feedback varyings used for the linking of this shader program.
1787 *
1788 * Use for glGetTransformFeedbackVarying().
1789 */
1790 struct gl_transform_feedback_varying_info *Varyings;
1791 GLint NumVarying;
1792
1793 /**
1794 * Total number of components stored in each buffer. This may be used by
1795 * hardware back-ends to determine the correct stride when interleaving
1796 * multiple transform feedback outputs in the same buffer.
1797 */
1798 unsigned BufferStride[MAX_FEEDBACK_BUFFERS];
1799 };
1800
1801
1802 /**
1803 * Transform feedback object state
1804 */
1805 struct gl_transform_feedback_object
1806 {
1807 GLuint Name; /**< AKA the object ID */
1808 GLchar *Label; /**< GL_KHR_debug */
1809 GLint RefCount;
1810 GLboolean Active; /**< Is transform feedback enabled? */
1811 GLboolean Paused; /**< Is transform feedback paused? */
1812 GLboolean EndedAnytime; /**< Has EndTransformFeedback been called
1813 at least once? */
1814 GLboolean EverBound; /**< Has this object been bound? */
1815
1816 /**
1817 * The shader program active when BeginTransformFeedback() was called.
1818 * When active and unpaused, this equals ctx->Shader.CurrentVertexProgram.
1819 */
1820 struct gl_shader_program *shader_program;
1821
1822 /**
1823 * GLES: if Active is true, remaining number of primitives which can be
1824 * rendered without overflow. This is necessary to track because GLES
1825 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1826 * glDrawArraysInstanced would overflow transform feedback buffers.
1827 * Undefined if Active is false.
1828 *
1829 * Not tracked for desktop GL since it's unnecessary.
1830 */
1831 unsigned GlesRemainingPrims;
1832
1833 /** The feedback buffers */
1834 GLuint BufferNames[MAX_FEEDBACK_BUFFERS];
1835 struct gl_buffer_object *Buffers[MAX_FEEDBACK_BUFFERS];
1836
1837 /** Start of feedback data in dest buffer */
1838 GLintptr Offset[MAX_FEEDBACK_BUFFERS];
1839
1840 /**
1841 * Max data to put into dest buffer (in bytes). Computed based on
1842 * RequestedSize and the actual size of the buffer.
1843 */
1844 GLsizeiptr Size[MAX_FEEDBACK_BUFFERS];
1845
1846 /**
1847 * Size that was specified when the buffer was bound. If the buffer was
1848 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1849 * zero.
1850 */
1851 GLsizeiptr RequestedSize[MAX_FEEDBACK_BUFFERS];
1852 };
1853
1854
1855 /**
1856 * Context state for transform feedback.
1857 */
1858 struct gl_transform_feedback_state
1859 {
1860 GLenum Mode; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1861
1862 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1863 struct gl_buffer_object *CurrentBuffer;
1864
1865 /** The table of all transform feedback objects */
1866 struct _mesa_HashTable *Objects;
1867
1868 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1869 struct gl_transform_feedback_object *CurrentObject;
1870
1871 /** The default xform-fb object (Name==0) */
1872 struct gl_transform_feedback_object *DefaultObject;
1873 };
1874
1875
1876 /**
1877 * A "performance monitor" as described in AMD_performance_monitor.
1878 */
1879 struct gl_perf_monitor_object
1880 {
1881 GLuint Name;
1882
1883 /** True if the monitor is currently active (Begin called but not End). */
1884 GLboolean Active;
1885
1886 /**
1887 * True if the monitor has ended.
1888 *
1889 * This is distinct from !Active because it may never have began.
1890 */
1891 GLboolean Ended;
1892
1893 /**
1894 * A list of groups with currently active counters.
1895 *
1896 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1897 */
1898 unsigned *ActiveGroups;
1899
1900 /**
1901 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1902 *
1903 * Checking whether counter 'c' in group 'g' is active can be done via:
1904 *
1905 * BITSET_TEST(ActiveCounters[g], c)
1906 */
1907 GLuint **ActiveCounters;
1908 };
1909
1910
1911 union gl_perf_monitor_counter_value
1912 {
1913 float f;
1914 uint64_t u64;
1915 uint32_t u32;
1916 };
1917
1918
1919 struct gl_perf_monitor_counter
1920 {
1921 /** Human readable name for the counter. */
1922 const char *Name;
1923
1924 /**
1925 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1926 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1927 */
1928 GLenum Type;
1929
1930 /** Minimum counter value. */
1931 union gl_perf_monitor_counter_value Minimum;
1932
1933 /** Maximum counter value. */
1934 union gl_perf_monitor_counter_value Maximum;
1935 };
1936
1937
1938 struct gl_perf_monitor_group
1939 {
1940 /** Human readable name for the group. */
1941 const char *Name;
1942
1943 /**
1944 * Maximum number of counters in this group which can be active at the
1945 * same time.
1946 */
1947 GLuint MaxActiveCounters;
1948
1949 /** Array of counters within this group. */
1950 const struct gl_perf_monitor_counter *Counters;
1951 GLuint NumCounters;
1952 };
1953
1954
1955 /**
1956 * Context state for AMD_performance_monitor.
1957 */
1958 struct gl_perf_monitor_state
1959 {
1960 /** Array of performance monitor groups (indexed by group ID) */
1961 const struct gl_perf_monitor_group *Groups;
1962 GLuint NumGroups;
1963
1964 /** The table of all performance monitors. */
1965 struct _mesa_HashTable *Monitors;
1966 };
1967
1968
1969 /**
1970 * Names of the various vertex/fragment program register files, etc.
1971 *
1972 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1973 * All values should fit in a 4-bit field.
1974 *
1975 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1976 * considered to be "uniform" variables since they can only be set outside
1977 * glBegin/End. They're also all stored in the same Parameters array.
1978 */
1979 typedef enum
1980 {
1981 PROGRAM_TEMPORARY, /**< machine->Temporary[] */
1982 PROGRAM_ARRAY, /**< Arrays & Matrixes */
1983 PROGRAM_INPUT, /**< machine->Inputs[] */
1984 PROGRAM_OUTPUT, /**< machine->Outputs[] */
1985 PROGRAM_STATE_VAR, /**< gl_program->Parameters[] */
1986 PROGRAM_CONSTANT, /**< gl_program->Parameters[] */
1987 PROGRAM_UNIFORM, /**< gl_program->Parameters[] */
1988 PROGRAM_WRITE_ONLY, /**< A dummy, write-only register */
1989 PROGRAM_ADDRESS, /**< machine->AddressReg */
1990 PROGRAM_SAMPLER, /**< for shader samplers, compile-time only */
1991 PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */
1992 PROGRAM_UNDEFINED, /**< Invalid/TBD value */
1993 PROGRAM_FILE_MAX
1994 } gl_register_file;
1995
1996
1997 /**
1998 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1999 * one of these values.
2000 */
2001 typedef enum
2002 {
2003 SYSTEM_VALUE_FRONT_FACE, /**< Fragment shader only (not done yet) */
2004 SYSTEM_VALUE_VERTEX_ID, /**< Vertex shader only */
2005 SYSTEM_VALUE_INSTANCE_ID, /**< Vertex shader only */
2006 SYSTEM_VALUE_SAMPLE_ID, /**< Fragment shader only */
2007 SYSTEM_VALUE_SAMPLE_POS, /**< Fragment shader only */
2008 SYSTEM_VALUE_SAMPLE_MASK_IN, /**< Fragment shader only */
2009 SYSTEM_VALUE_MAX /**< Number of values */
2010 } gl_system_value;
2011
2012
2013 /**
2014 * The possible interpolation qualifiers that can be applied to a fragment
2015 * shader input in GLSL.
2016 *
2017 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
2018 * gl_fragment_program data structure to 0 causes the default behavior.
2019 */
2020 enum glsl_interp_qualifier
2021 {
2022 INTERP_QUALIFIER_NONE = 0,
2023 INTERP_QUALIFIER_SMOOTH,
2024 INTERP_QUALIFIER_FLAT,
2025 INTERP_QUALIFIER_NOPERSPECTIVE,
2026 INTERP_QUALIFIER_COUNT /**< Number of interpolation qualifiers */
2027 };
2028
2029
2030 /**
2031 * \brief Layout qualifiers for gl_FragDepth.
2032 *
2033 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
2034 * a layout qualifier.
2035 *
2036 * \see enum ir_depth_layout
2037 */
2038 enum gl_frag_depth_layout
2039 {
2040 FRAG_DEPTH_LAYOUT_NONE, /**< No layout is specified. */
2041 FRAG_DEPTH_LAYOUT_ANY,
2042 FRAG_DEPTH_LAYOUT_GREATER,
2043 FRAG_DEPTH_LAYOUT_LESS,
2044 FRAG_DEPTH_LAYOUT_UNCHANGED
2045 };
2046
2047
2048 /**
2049 * Base class for any kind of program object
2050 */
2051 struct gl_program
2052 {
2053 GLuint Id;
2054 GLubyte *String; /**< Null-terminated program text */
2055 GLint RefCount;
2056 GLenum Target; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2057 GLenum Format; /**< String encoding format */
2058
2059 struct prog_instruction *Instructions;
2060
2061 GLbitfield64 InputsRead; /**< Bitmask of which input regs are read */
2062 GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */
2063 GLbitfield SystemValuesRead; /**< Bitmask of SYSTEM_VALUE_x inputs used */
2064 GLbitfield InputFlags[MAX_PROGRAM_INPUTS]; /**< PROG_PARAM_BIT_x flags */
2065 GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
2066 GLbitfield TexturesUsed[MAX_COMBINED_TEXTURE_IMAGE_UNITS]; /**< TEXTURE_x_BIT bitmask */
2067 GLbitfield SamplersUsed; /**< Bitfield of which samplers are used */
2068 GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
2069
2070 GLboolean UsesGather; /**< Does this program use gather4 at all? */
2071
2072 /**
2073 * For vertex and geometry shaders, true if the program uses the
2074 * gl_ClipDistance output. Ignored for fragment shaders.
2075 */
2076 GLboolean UsesClipDistanceOut;
2077
2078
2079 /** Named parameters, constants, etc. from program text */
2080 struct gl_program_parameter_list *Parameters;
2081
2082 /**
2083 * Local parameters used by the program.
2084 *
2085 * It's dynamically allocated because it is rarely used (just
2086 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
2087 * allocated.
2088 */
2089 GLfloat (*LocalParams)[4];
2090
2091 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2092 GLubyte SamplerUnits[MAX_SAMPLERS];
2093
2094 /** Bitmask of which register files are read/written with indirect
2095 * addressing. Mask of (1 << PROGRAM_x) bits.
2096 */
2097 GLbitfield IndirectRegisterFiles;
2098
2099 /** Logical counts */
2100 /*@{*/
2101 GLuint NumInstructions;
2102 GLuint NumTemporaries;
2103 GLuint NumParameters;
2104 GLuint NumAttributes;
2105 GLuint NumAddressRegs;
2106 GLuint NumAluInstructions;
2107 GLuint NumTexInstructions;
2108 GLuint NumTexIndirections;
2109 /*@}*/
2110 /** Native, actual h/w counts */
2111 /*@{*/
2112 GLuint NumNativeInstructions;
2113 GLuint NumNativeTemporaries;
2114 GLuint NumNativeParameters;
2115 GLuint NumNativeAttributes;
2116 GLuint NumNativeAddressRegs;
2117 GLuint NumNativeAluInstructions;
2118 GLuint NumNativeTexInstructions;
2119 GLuint NumNativeTexIndirections;
2120 /*@}*/
2121 };
2122
2123
2124 /** Vertex program object */
2125 struct gl_vertex_program
2126 {
2127 struct gl_program Base; /**< base class */
2128 GLboolean IsPositionInvariant;
2129 };
2130
2131
2132 /** Geometry program object */
2133 struct gl_geometry_program
2134 {
2135 struct gl_program Base; /**< base class */
2136
2137 GLint VerticesIn;
2138 GLint VerticesOut;
2139 GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2140 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2141 GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2142 GLboolean UsesEndPrimitive;
2143 };
2144
2145
2146 /** Fragment program object */
2147 struct gl_fragment_program
2148 {
2149 struct gl_program Base; /**< base class */
2150 GLboolean UsesKill; /**< shader uses KIL instruction */
2151 GLboolean UsesDFdy; /**< shader uses DDY instruction */
2152 GLboolean OriginUpperLeft;
2153 GLboolean PixelCenterInteger;
2154 enum gl_frag_depth_layout FragDepthLayout;
2155
2156 /**
2157 * GLSL interpolation qualifier associated with each fragment shader input.
2158 * For inputs that do not have an interpolation qualifier specified in
2159 * GLSL, the value is INTERP_QUALIFIER_NONE.
2160 */
2161 enum glsl_interp_qualifier InterpQualifier[VARYING_SLOT_MAX];
2162
2163 /**
2164 * Bitfield indicating, for each fragment shader input, 1 if that input
2165 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2166 */
2167 GLbitfield64 IsCentroid;
2168
2169 /**
2170 * Bitfield indicating, for each fragment shader input, 1 if that input
2171 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2172 */
2173 GLbitfield64 IsSample;
2174 };
2175
2176
2177 /**
2178 * State common to vertex and fragment programs.
2179 */
2180 struct gl_program_state
2181 {
2182 GLint ErrorPos; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2183 const char *ErrorString; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2184 };
2185
2186
2187 /**
2188 * Context state for vertex programs.
2189 */
2190 struct gl_vertex_program_state
2191 {
2192 GLboolean Enabled; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2193 GLboolean _Enabled; /**< Enabled and _valid_ user program? */
2194 GLboolean PointSizeEnabled; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2195 GLboolean TwoSideEnabled; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2196 /** Computed two sided lighting for fixed function/programs. */
2197 GLboolean _TwoSideEnabled;
2198 struct gl_vertex_program *Current; /**< User-bound vertex program */
2199
2200 /** Currently enabled and valid vertex program (including internal
2201 * programs, user-defined vertex programs and GLSL vertex shaders).
2202 * This is the program we must use when rendering.
2203 */
2204 struct gl_vertex_program *_Current;
2205
2206 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
2207
2208 /** Should fixed-function T&L be implemented with a vertex prog? */
2209 GLboolean _MaintainTnlProgram;
2210
2211 /** Program to emulate fixed-function T&L (see above) */
2212 struct gl_vertex_program *_TnlProgram;
2213
2214 /** Cache of fixed-function programs */
2215 struct gl_program_cache *Cache;
2216
2217 GLboolean _Overriden;
2218 };
2219
2220
2221 /**
2222 * Context state for geometry programs.
2223 */
2224 struct gl_geometry_program_state
2225 {
2226 GLboolean Enabled; /**< GL_ARB_GEOMETRY_SHADER4 */
2227 GLboolean _Enabled; /**< Enabled and valid program? */
2228 struct gl_geometry_program *Current; /**< user-bound geometry program */
2229
2230 /** Currently enabled and valid program (including internal programs
2231 * and compiled shader programs).
2232 */
2233 struct gl_geometry_program *_Current;
2234
2235 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
2236
2237 /** Cache of fixed-function programs */
2238 struct gl_program_cache *Cache;
2239 };
2240
2241 /**
2242 * Context state for fragment programs.
2243 */
2244 struct gl_fragment_program_state
2245 {
2246 GLboolean Enabled; /**< User-set fragment program enable flag */
2247 GLboolean _Enabled; /**< Enabled and _valid_ user program? */
2248 struct gl_fragment_program *Current; /**< User-bound fragment program */
2249
2250 /** Currently enabled and valid fragment program (including internal
2251 * programs, user-defined fragment programs and GLSL fragment shaders).
2252 * This is the program we must use when rendering.
2253 */
2254 struct gl_fragment_program *_Current;
2255
2256 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
2257
2258 /** Should fixed-function texturing be implemented with a fragment prog? */
2259 GLboolean _MaintainTexEnvProgram;
2260
2261 /** Program to emulate fixed-function texture env/combine (see above) */
2262 struct gl_fragment_program *_TexEnvProgram;
2263
2264 /** Cache of fixed-function programs */
2265 struct gl_program_cache *Cache;
2266 };
2267
2268
2269 /**
2270 * ATI_fragment_shader runtime state
2271 */
2272 #define ATI_FS_INPUT_PRIMARY 0
2273 #define ATI_FS_INPUT_SECONDARY 1
2274
2275 struct atifs_instruction;
2276 struct atifs_setupinst;
2277
2278 /**
2279 * ATI fragment shader
2280 */
2281 struct ati_fragment_shader
2282 {
2283 GLuint Id;
2284 GLint RefCount;
2285 struct atifs_instruction *Instructions[2];
2286 struct atifs_setupinst *SetupInst[2];
2287 GLfloat Constants[8][4];
2288 GLbitfield LocalConstDef; /**< Indicates which constants have been set */
2289 GLubyte numArithInstr[2];
2290 GLubyte regsAssigned[2];
2291 GLubyte NumPasses; /**< 1 or 2 */
2292 GLubyte cur_pass;
2293 GLubyte last_optype;
2294 GLboolean interpinp1;
2295 GLboolean isValid;
2296 GLuint swizzlerq;
2297 };
2298
2299 /**
2300 * Context state for GL_ATI_fragment_shader
2301 */
2302 struct gl_ati_fragment_shader_state
2303 {
2304 GLboolean Enabled;
2305 GLboolean _Enabled; /**< enabled and valid shader? */
2306 GLboolean Compiling;
2307 GLfloat GlobalConstants[8][4];
2308 struct ati_fragment_shader *Current;
2309 };
2310
2311
2312 /** Set by #pragma directives */
2313 struct gl_sl_pragmas
2314 {
2315 GLboolean IgnoreOptimize; /**< ignore #pragma optimize(on/off) ? */
2316 GLboolean IgnoreDebug; /**< ignore #pragma debug(on/off) ? */
2317 GLboolean Optimize; /**< defaults on */
2318 GLboolean Debug; /**< defaults off */
2319 };
2320
2321
2322 /**
2323 * A GLSL vertex or fragment shader object.
2324 */
2325 struct gl_shader
2326 {
2327 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2328 * Must be the first field.
2329 */
2330 GLenum Type;
2331 gl_shader_stage Stage;
2332 GLuint Name; /**< AKA the handle */
2333 GLchar *Label; /**< GL_KHR_debug */
2334 GLint RefCount; /**< Reference count */
2335 GLboolean DeletePending;
2336 GLboolean CompileStatus;
2337 const GLchar *Source; /**< Source code string */
2338 GLuint SourceChecksum; /**< for debug/logging purposes */
2339 struct gl_program *Program; /**< Post-compile assembly code */
2340 GLchar *InfoLog;
2341 struct gl_sl_pragmas Pragmas;
2342
2343 unsigned Version; /**< GLSL version used for linking */
2344 GLboolean IsES; /**< True if this shader uses GLSL ES */
2345
2346 /**
2347 * \name Sampler tracking
2348 *
2349 * \note Each of these fields is only set post-linking.
2350 */
2351 /*@{*/
2352 unsigned num_samplers; /**< Number of samplers used by this shader. */
2353 GLbitfield active_samplers; /**< Bitfield of which samplers are used */
2354 GLbitfield shadow_samplers; /**< Samplers used for shadow sampling. */
2355 /*@}*/
2356
2357 /**
2358 * Map from sampler unit to texture unit (set by glUniform1i())
2359 *
2360 * A sampler unit is associated with each sampler uniform by the linker.
2361 * The sampler unit associated with each uniform is stored in the
2362 * \c gl_uniform_storage::sampler field.
2363 */
2364 GLubyte SamplerUnits[MAX_SAMPLERS];
2365 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2366 gl_texture_index SamplerTargets[MAX_SAMPLERS];
2367
2368 /**
2369 * Number of default uniform block components used by this shader.
2370 *
2371 * This field is only set post-linking.
2372 */
2373 unsigned num_uniform_components;
2374
2375 /**
2376 * Number of combined uniform components used by this shader.
2377 *
2378 * This field is only set post-linking. It is the sum of the uniform block
2379 * sizes divided by sizeof(float), and num_uniform_compoennts.
2380 */
2381 unsigned num_combined_uniform_components;
2382
2383 /**
2384 * This shader's uniform block information.
2385 *
2386 * The offsets of the variables are assigned only for shaders in a program's
2387 * _LinkedShaders[].
2388 */
2389 struct gl_uniform_block *UniformBlocks;
2390 unsigned NumUniformBlocks;
2391
2392 struct exec_list *ir;
2393 struct glsl_symbol_table *symbols;
2394
2395 bool uses_builtin_functions;
2396
2397 /**
2398 * Geometry shader state from GLSL 1.50 layout qualifiers.
2399 */
2400 struct {
2401 GLint VerticesOut;
2402 /**
2403 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2404 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2405 * shader.
2406 */
2407 GLenum InputType;
2408 /**
2409 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2410 * it's not set in this shader.
2411 */
2412 GLenum OutputType;
2413 } Geom;
2414
2415 /**
2416 * Map from image uniform index to image unit (set by glUniform1i())
2417 *
2418 * An image uniform index is associated with each image uniform by
2419 * the linker. The image index associated with each uniform is
2420 * stored in the \c gl_uniform_storage::image field.
2421 */
2422 GLubyte ImageUnits[MAX_IMAGE_UNIFORMS];
2423
2424 /**
2425 * Access qualifier specified in the shader for each image uniform
2426 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2427 * GL_READ_WRITE.
2428 *
2429 * It may be different, though only more strict than the value of
2430 * \c gl_image_unit::Access for the corresponding image unit.
2431 */
2432 GLenum ImageAccess[MAX_IMAGE_UNIFORMS];
2433
2434 /**
2435 * Number of image uniforms defined in the shader. It specifies
2436 * the number of valid elements in the \c ImageUnits and \c
2437 * ImageAccess arrays above.
2438 */
2439 GLuint NumImages;
2440 };
2441
2442
2443 struct gl_uniform_buffer_variable
2444 {
2445 char *Name;
2446
2447 /**
2448 * Name of the uniform as seen by glGetUniformIndices.
2449 *
2450 * glGetUniformIndices requires that the block instance index \b not be
2451 * present in the name of queried uniforms.
2452 *
2453 * \note
2454 * \c gl_uniform_buffer_variable::IndexName and
2455 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2456 */
2457 char *IndexName;
2458
2459 const struct glsl_type *Type;
2460 unsigned int Offset;
2461 GLboolean RowMajor;
2462 };
2463
2464
2465 enum gl_uniform_block_packing
2466 {
2467 ubo_packing_std140,
2468 ubo_packing_shared,
2469 ubo_packing_packed
2470 };
2471
2472
2473 struct gl_uniform_block
2474 {
2475 /** Declared name of the uniform block */
2476 char *Name;
2477
2478 /** Array of supplemental information about UBO ir_variables. */
2479 struct gl_uniform_buffer_variable *Uniforms;
2480 GLuint NumUniforms;
2481
2482 /**
2483 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2484 * with glBindBufferBase to bind a buffer object to this uniform block. When
2485 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2486 */
2487 GLuint Binding;
2488
2489 /**
2490 * Minimum size of a buffer object to back this uniform buffer
2491 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2492 */
2493 GLuint UniformBufferSize;
2494
2495 /**
2496 * Layout specified in the shader
2497 *
2498 * This isn't accessible through the API, but it is used while
2499 * cross-validating uniform blocks.
2500 */
2501 enum gl_uniform_block_packing _Packing;
2502 };
2503
2504 /**
2505 * Structure that represents a reference to an atomic buffer from some
2506 * shader program.
2507 */
2508 struct gl_active_atomic_buffer
2509 {
2510 /** Uniform indices of the atomic counters declared within it. */
2511 GLuint *Uniforms;
2512 GLuint NumUniforms;
2513
2514 /** Binding point index associated with it. */
2515 GLuint Binding;
2516
2517 /** Minimum reasonable size it is expected to have. */
2518 GLuint MinimumSize;
2519
2520 /** Shader stages making use of it. */
2521 GLboolean StageReferences[MESA_SHADER_STAGES];
2522 };
2523
2524 /**
2525 * A GLSL program object.
2526 * Basically a linked collection of vertex and fragment shaders.
2527 */
2528 struct gl_shader_program
2529 {
2530 GLenum Type; /**< Always GL_SHADER_PROGRAM (internal token) */
2531 GLuint Name; /**< aka handle or ID */
2532 GLchar *Label; /**< GL_KHR_debug */
2533 GLint RefCount; /**< Reference count */
2534 GLboolean DeletePending;
2535
2536 /**
2537 * Is the application intending to glGetProgramBinary this program?
2538 */
2539 GLboolean BinaryRetreivableHint;
2540
2541 /**
2542 * Flags that the linker should not reject the program if it lacks
2543 * a vertex or fragment shader. GLES2 doesn't allow separate
2544 * shader objects, and would reject them. However, we internally
2545 * build separate shader objects for fixed function programs, which
2546 * we use for drivers/common/meta.c and for handling
2547 * _mesa_update_state with no program bound (for example in
2548 * glClear()).
2549 */
2550 GLboolean InternalSeparateShader;
2551
2552 GLuint NumShaders; /**< number of attached shaders */
2553 struct gl_shader **Shaders; /**< List of attached the shaders */
2554
2555 /**
2556 * User-defined attribute bindings
2557 *
2558 * These are set via \c glBindAttribLocation and are used to direct the
2559 * GLSL linker. These are \b not the values used in the compiled shader,
2560 * and they are \b not the values returned by \c glGetAttribLocation.
2561 */
2562 struct string_to_uint_map *AttributeBindings;
2563
2564 /**
2565 * User-defined fragment data bindings
2566 *
2567 * These are set via \c glBindFragDataLocation and are used to direct the
2568 * GLSL linker. These are \b not the values used in the compiled shader,
2569 * and they are \b not the values returned by \c glGetFragDataLocation.
2570 */
2571 struct string_to_uint_map *FragDataBindings;
2572 struct string_to_uint_map *FragDataIndexBindings;
2573
2574 /**
2575 * Transform feedback varyings last specified by
2576 * glTransformFeedbackVaryings().
2577 *
2578 * For the current set of transform feeedback varyings used for transform
2579 * feedback output, see LinkedTransformFeedback.
2580 */
2581 struct {
2582 GLenum BufferMode;
2583 GLuint NumVarying;
2584 GLchar **VaryingNames; /**< Array [NumVarying] of char * */
2585 } TransformFeedback;
2586
2587 /** Post-link transform feedback info. */
2588 struct gl_transform_feedback_info LinkedTransformFeedback;
2589
2590 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2591 enum gl_frag_depth_layout FragDepthLayout;
2592
2593 /**
2594 * Geometry shader state - copied into gl_geometry_program by
2595 * _mesa_copy_linked_program_data().
2596 */
2597 struct {
2598 GLint VerticesIn;
2599 GLint VerticesOut;
2600 GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2601 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2602 GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2603 /**
2604 * True if gl_ClipDistance is written to. Copied into
2605 * gl_geometry_program by _mesa_copy_linked_program_data().
2606 */
2607 GLboolean UsesClipDistance;
2608 GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
2609 0 if not present. */
2610 GLboolean UsesEndPrimitive;
2611 } Geom;
2612
2613 /** Vertex shader state */
2614 struct {
2615 /**
2616 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2617 * by _mesa_copy_linked_program_data().
2618 */
2619 GLboolean UsesClipDistance;
2620 GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
2621 0 if not present. */
2622 } Vert;
2623
2624 /* post-link info: */
2625 unsigned NumUserUniformStorage;
2626 struct gl_uniform_storage *UniformStorage;
2627
2628 /**
2629 * Size of the gl_ClipDistance array that is output from the last pipeline
2630 * stage before the fragment shader.
2631 */
2632 unsigned LastClipDistanceArraySize;
2633
2634 struct gl_uniform_block *UniformBlocks;
2635 unsigned NumUniformBlocks;
2636
2637 /**
2638 * Scale factor for the uniform base location
2639 *
2640 * This is used to generate locations (returned by \c glGetUniformLocation)
2641 * of uniforms. The base location of the uniform is multiplied by this
2642 * value, and the array index is added.
2643 *
2644 * \note
2645 * Must be >= 1.
2646 *
2647 * \sa
2648 * _mesa_uniform_merge_location_offset, _mesa_uniform_split_location_offset
2649 */
2650 unsigned UniformLocationBaseScale;
2651
2652 /**
2653 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2654 * they're used in, or -1.
2655 *
2656 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2657 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2658 */
2659 int *UniformBlockStageIndex[MESA_SHADER_STAGES];
2660
2661 /**
2662 * Map of active uniform names to locations
2663 *
2664 * Maps any active uniform that is not an array element to a location.
2665 * Each active uniform, including individual structure members will appear
2666 * in this map. This roughly corresponds to the set of names that would be
2667 * enumerated by \c glGetActiveUniform.
2668 */
2669 struct string_to_uint_map *UniformHash;
2670
2671 struct gl_active_atomic_buffer *AtomicBuffers;
2672 unsigned NumAtomicBuffers;
2673
2674 GLboolean LinkStatus; /**< GL_LINK_STATUS */
2675 GLboolean Validated;
2676 GLboolean _Used; /**< Ever used for drawing? */
2677 GLchar *InfoLog;
2678
2679 unsigned Version; /**< GLSL version used for linking */
2680 GLboolean IsES; /**< True if this program uses GLSL ES */
2681
2682 /**
2683 * Per-stage shaders resulting from the first stage of linking.
2684 *
2685 * Set of linked shaders for this program. The array is accessed using the
2686 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2687 * \c NULL.
2688 */
2689 struct gl_shader *_LinkedShaders[MESA_SHADER_STAGES];
2690 };
2691
2692
2693 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2694 #define GLSL_LOG 0x2 /**< Write shaders to files */
2695 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2696 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2697 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2698 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2699 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2700 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2701 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2702 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2703
2704
2705 /**
2706 * Context state for GLSL vertex/fragment shaders.
2707 */
2708 struct gl_shader_state
2709 {
2710 /**
2711 * Programs used for rendering
2712 *
2713 * There is a separate program set for each shader stage. If
2714 * GL_EXT_separate_shader_objects is not supported, each of these must point
2715 * to \c NULL or to the same program.
2716 */
2717 struct gl_shader_program *CurrentVertexProgram;
2718 struct gl_shader_program *CurrentGeometryProgram;
2719 struct gl_shader_program *CurrentFragmentProgram;
2720
2721 struct gl_shader_program *_CurrentFragmentProgram;
2722
2723 /**
2724 * Program used by glUniform calls.
2725 *
2726 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2727 */
2728 struct gl_shader_program *ActiveProgram;
2729
2730 GLbitfield Flags; /**< Mask of GLSL_x flags */
2731 };
2732
2733
2734 /**
2735 * Compiler options for a single GLSL shaders type
2736 */
2737 struct gl_shader_compiler_options
2738 {
2739 /** Driver-selectable options: */
2740 GLboolean EmitCondCodes; /**< Use condition codes? */
2741 GLboolean EmitNoLoops;
2742 GLboolean EmitNoFunctions;
2743 GLboolean EmitNoCont; /**< Emit CONT opcode? */
2744 GLboolean EmitNoMainReturn; /**< Emit CONT/RET opcodes? */
2745 GLboolean EmitNoNoise; /**< Emit NOISE opcodes? */
2746 GLboolean EmitNoPow; /**< Emit POW opcodes? */
2747 GLboolean LowerClipDistance; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2748
2749 /**
2750 * \name Forms of indirect addressing the driver cannot do.
2751 */
2752 /*@{*/
2753 GLboolean EmitNoIndirectInput; /**< No indirect addressing of inputs */
2754 GLboolean EmitNoIndirectOutput; /**< No indirect addressing of outputs */
2755 GLboolean EmitNoIndirectTemp; /**< No indirect addressing of temps */
2756 GLboolean EmitNoIndirectUniform; /**< No indirect addressing of constants */
2757 /*@}*/
2758
2759 GLuint MaxIfDepth; /**< Maximum nested IF blocks */
2760 GLuint MaxUnrollIterations;
2761
2762 /**
2763 * Prefer DP4 instructions (rather than MUL/MAD) for matrix * vector
2764 * operations, such as position transformation.
2765 */
2766 GLboolean PreferDP4;
2767
2768 struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */
2769 };
2770
2771
2772 /**
2773 * Occlusion/timer query object.
2774 */
2775 struct gl_query_object
2776 {
2777 GLenum Target; /**< The query target, when active */
2778 GLuint Id; /**< hash table ID/name */
2779 GLchar *Label; /**< GL_KHR_debug */
2780 GLuint64EXT Result; /**< the counter */
2781 GLboolean Active; /**< inside Begin/EndQuery */
2782 GLboolean Ready; /**< result is ready? */
2783 GLboolean EverBound;/**< has query object ever been bound */
2784 };
2785
2786
2787 /**
2788 * Context state for query objects.
2789 */
2790 struct gl_query_state
2791 {
2792 struct _mesa_HashTable *QueryObjects;
2793 struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */
2794 struct gl_query_object *CurrentTimerObject; /* GL_EXT_timer_query */
2795
2796 /** GL_NV_conditional_render */
2797 struct gl_query_object *CondRenderQuery;
2798
2799 /** GL_EXT_transform_feedback */
2800 struct gl_query_object *PrimitivesGenerated;
2801 struct gl_query_object *PrimitivesWritten;
2802
2803 /** GL_ARB_timer_query */
2804 struct gl_query_object *TimeElapsed;
2805
2806 GLenum CondRenderMode;
2807 };
2808
2809
2810 /** Sync object state */
2811 struct gl_sync_object
2812 {
2813 GLenum Type; /**< GL_SYNC_FENCE */
2814 GLuint Name; /**< Fence name */
2815 GLchar *Label; /**< GL_KHR_debug */
2816 GLint RefCount; /**< Reference count */
2817 GLboolean DeletePending; /**< Object was deleted while there were still
2818 * live references (e.g., sync not yet finished)
2819 */
2820 GLenum SyncCondition;
2821 GLbitfield Flags; /**< Flags passed to glFenceSync */
2822 GLuint StatusFlag:1; /**< Has the sync object been signaled? */
2823 };
2824
2825
2826 /**
2827 * State which can be shared by multiple contexts:
2828 */
2829 struct gl_shared_state
2830 {
2831 _glthread_Mutex Mutex; /**< for thread safety */
2832 GLint RefCount; /**< Reference count */
2833 struct _mesa_HashTable *DisplayList; /**< Display lists hash table */
2834 struct _mesa_HashTable *TexObjects; /**< Texture objects hash table */
2835
2836 /** Default texture objects (shared by all texture units) */
2837 struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS];
2838
2839 /** Fallback texture used when a bound texture is incomplete */
2840 struct gl_texture_object *FallbackTex[NUM_TEXTURE_TARGETS];
2841
2842 /**
2843 * \name Thread safety and statechange notification for texture
2844 * objects.
2845 *
2846 * \todo Improve the granularity of locking.
2847 */
2848 /*@{*/
2849 _glthread_Mutex TexMutex; /**< texobj thread safety */
2850 GLuint TextureStateStamp; /**< state notification for shared tex */
2851 /*@}*/
2852
2853 /** Default buffer object for vertex arrays that aren't in VBOs */
2854 struct gl_buffer_object *NullBufferObj;
2855
2856 /**
2857 * \name Vertex/geometry/fragment programs
2858 */
2859 /*@{*/
2860 struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */
2861 struct gl_vertex_program *DefaultVertexProgram;
2862 struct gl_fragment_program *DefaultFragmentProgram;
2863 struct gl_geometry_program *DefaultGeometryProgram;
2864 /*@}*/
2865
2866 /* GL_ATI_fragment_shader */
2867 struct _mesa_HashTable *ATIShaders;
2868 struct ati_fragment_shader *DefaultFragmentShader;
2869
2870 struct _mesa_HashTable *BufferObjects;
2871
2872 /** Table of both gl_shader and gl_shader_program objects */
2873 struct _mesa_HashTable *ShaderObjects;
2874
2875 /* GL_EXT_framebuffer_object */
2876 struct _mesa_HashTable *RenderBuffers;
2877 struct _mesa_HashTable *FrameBuffers;
2878
2879 /* GL_ARB_sync */
2880 struct set *SyncObjects;
2881
2882 /** GL_ARB_sampler_objects */
2883 struct _mesa_HashTable *SamplerObjects;
2884
2885 /**
2886 * Some context in this share group was affected by a GPU reset
2887 *
2888 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
2889 * been affected by a GPU reset must also return
2890 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
2891 *
2892 * Once this field becomes true, it is never reset to false.
2893 */
2894 bool ShareGroupReset;
2895 };
2896
2897
2898
2899 /**
2900 * Renderbuffers represent drawing surfaces such as color, depth and/or
2901 * stencil. A framebuffer object has a set of renderbuffers.
2902 * Drivers will typically derive subclasses of this type.
2903 */
2904 struct gl_renderbuffer
2905 {
2906 _glthread_Mutex Mutex; /**< for thread safety */
2907 GLuint ClassID; /**< Useful for drivers */
2908 GLuint Name;
2909 GLchar *Label; /**< GL_KHR_debug */
2910 GLint RefCount;
2911 GLuint Width, Height;
2912 GLuint Depth;
2913 GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
2914 GLboolean AttachedAnytime; /**< TRUE if it was attached to a framebuffer */
2915 /**
2916 * True for renderbuffers that wrap textures, giving the driver a chance to
2917 * flush render caches through the FinishRenderTexture hook.
2918 *
2919 * Drivers may also set this on renderbuffers other than those generated by
2920 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2921 * called without a rb->TexImage.
2922 */
2923 GLboolean NeedsFinishRenderTexture;
2924 GLubyte NumSamples;
2925 GLenum InternalFormat; /**< The user-specified format */
2926 GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2927 GL_STENCIL_INDEX. */
2928 gl_format Format; /**< The actual renderbuffer memory format */
2929 /**
2930 * Pointer to the texture image if this renderbuffer wraps a texture,
2931 * otherwise NULL.
2932 *
2933 * Note that the reference on the gl_texture_object containing this
2934 * TexImage is held by the gl_renderbuffer_attachment.
2935 */
2936 struct gl_texture_image *TexImage;
2937
2938 /** Delete this renderbuffer */
2939 void (*Delete)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2940
2941 /** Allocate new storage for this renderbuffer */
2942 GLboolean (*AllocStorage)(struct gl_context *ctx,
2943 struct gl_renderbuffer *rb,
2944 GLenum internalFormat,
2945 GLuint width, GLuint height);
2946 };
2947
2948
2949 /**
2950 * A renderbuffer attachment points to either a texture object (and specifies
2951 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2952 */
2953 struct gl_renderbuffer_attachment
2954 {
2955 GLenum Type; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2956 GLboolean Complete;
2957
2958 /**
2959 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2960 * application supplied renderbuffer object.
2961 */
2962 struct gl_renderbuffer *Renderbuffer;
2963
2964 /**
2965 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2966 * supplied texture object.
2967 */
2968 struct gl_texture_object *Texture;
2969 GLuint TextureLevel; /**< Attached mipmap level. */
2970 GLuint CubeMapFace; /**< 0 .. 5, for cube map textures. */
2971 GLuint Zoffset; /**< Slice for 3D textures, or layer for both 1D
2972 * and 2D array textures */
2973 GLboolean Layered;
2974 };
2975
2976
2977 /**
2978 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2979 * In C++ terms, think of this as a base class from which device drivers
2980 * will make derived classes.
2981 */
2982 struct gl_framebuffer
2983 {
2984 _glthread_Mutex Mutex; /**< for thread safety */
2985 /**
2986 * If zero, this is a window system framebuffer. If non-zero, this
2987 * is a FBO framebuffer; note that for some devices (i.e. those with
2988 * a natural pixel coordinate system for FBOs that differs from the
2989 * OpenGL/Mesa coordinate system), this means that the viewport,
2990 * polygon face orientation, and polygon stipple will have to be inverted.
2991 */
2992 GLuint Name;
2993 GLchar *Label; /**< GL_KHR_debug */
2994
2995 GLint RefCount;
2996 GLboolean DeletePending;
2997
2998 /**
2999 * The framebuffer's visual. Immutable if this is a window system buffer.
3000 * Computed from attachments if user-made FBO.
3001 */
3002 struct gl_config Visual;
3003
3004 GLuint Width, Height; /**< size of frame buffer in pixels */
3005
3006 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
3007 /*@{*/
3008 GLint _Xmin, _Xmax; /**< inclusive */
3009 GLint _Ymin, _Ymax; /**< exclusive */
3010 /*@}*/
3011
3012 /** \name Derived Z buffer stuff */
3013 /*@{*/
3014 GLuint _DepthMax; /**< Max depth buffer value */
3015 GLfloat _DepthMaxF; /**< Float max depth buffer value */
3016 GLfloat _MRD; /**< minimum resolvable difference in Z values */
3017 /*@}*/
3018
3019 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3020 GLenum _Status;
3021
3022 /** Integer color values */
3023 GLboolean _IntegerColor;
3024
3025 /* ARB_color_buffer_float */
3026 GLboolean _AllColorBuffersFixedPoint; /* no integer, no float */
3027 GLboolean _HasSNormOrFloatColorBuffer;
3028
3029 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3030 struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];
3031
3032 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3033 * attribute group and GL_PIXEL attribute group, respectively.
3034 */
3035 GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];
3036 GLenum ColorReadBuffer;
3037
3038 /** Computed from ColorDraw/ReadBuffer above */
3039 GLuint _NumColorDrawBuffers;
3040 GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */
3041 GLint _ColorReadBufferIndex; /* -1 = None */
3042 struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS];
3043 struct gl_renderbuffer *_ColorReadBuffer;
3044
3045 /**
3046 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3047 * is not layered. For cube maps and cube map arrays, each cube face
3048 * counts as a layer.
3049 */
3050 GLuint MaxNumLayers;
3051
3052 /** Delete this framebuffer */
3053 void (*Delete)(struct gl_framebuffer *fb);
3054 };
3055
3056
3057 /**
3058 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3059 */
3060 struct gl_precision
3061 {
3062 GLushort RangeMin; /**< min value exponent */
3063 GLushort RangeMax; /**< max value exponent */
3064 GLushort Precision; /**< number of mantissa bits */
3065 };
3066
3067
3068 /**
3069 * Limits for vertex, geometry and fragment programs/shaders.
3070 */
3071 struct gl_program_constants
3072 {
3073 /* logical limits */
3074 GLuint MaxInstructions;
3075 GLuint MaxAluInstructions;
3076 GLuint MaxTexInstructions;
3077 GLuint MaxTexIndirections;
3078 GLuint MaxAttribs;
3079 GLuint MaxTemps;
3080 GLuint MaxAddressRegs;
3081 GLuint MaxAddressOffset; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3082 GLuint MaxParameters;
3083 GLuint MaxLocalParams;
3084 GLuint MaxEnvParams;
3085 /* native/hardware limits */
3086 GLuint MaxNativeInstructions;
3087 GLuint MaxNativeAluInstructions;
3088 GLuint MaxNativeTexInstructions;
3089 GLuint MaxNativeTexIndirections;
3090 GLuint MaxNativeAttribs;
3091 GLuint MaxNativeTemps;
3092 GLuint MaxNativeAddressRegs;
3093 GLuint MaxNativeParameters;
3094 /* For shaders */
3095 GLuint MaxUniformComponents; /**< Usually == MaxParameters * 4 */
3096
3097 /**
3098 * \name Per-stage input / output limits
3099 *
3100 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3101 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3102 * ES). This is stored as \c gl_constants::MaxVarying.
3103 *
3104 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3105 * variables. Each stage as a certain number of outputs that it can feed
3106 * to the next stage and a certain number inputs that it can consume from
3107 * the previous stage.
3108 *
3109 * Vertex shader inputs do not participate this in this accounting.
3110 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3111 *
3112 * Fragment shader outputs do not participate this in this accounting.
3113 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3114 */
3115 /*@{*/
3116 GLuint MaxInputComponents;
3117 GLuint MaxOutputComponents;
3118 /*@}*/
3119
3120 /* ES 2.0 and GL_ARB_ES2_compatibility */
3121 struct gl_precision LowFloat, MediumFloat, HighFloat;
3122 struct gl_precision LowInt, MediumInt, HighInt;
3123 /* GL_ARB_uniform_buffer_object */
3124 GLuint MaxUniformBlocks;
3125 GLuint MaxCombinedUniformComponents;
3126 GLuint MaxTextureImageUnits;
3127
3128 /* GL_ARB_shader_atomic_counters */
3129 GLuint MaxAtomicBuffers;
3130 GLuint MaxAtomicCounters;
3131
3132 /* GL_ARB_shader_image_load_store */
3133 GLuint MaxImageUniforms;
3134 };
3135
3136
3137 /**
3138 * Constants which may be overridden by device driver during context creation
3139 * but are never changed after that.
3140 */
3141 struct gl_constants
3142 {
3143 GLuint MaxTextureMbytes; /**< Max memory per image, in MB */
3144 GLuint MaxTextureLevels; /**< Max mipmap levels. */
3145 GLuint Max3DTextureLevels; /**< Max mipmap levels for 3D textures */
3146 GLuint MaxCubeTextureLevels; /**< Max mipmap levels for cube textures */
3147 GLuint MaxArrayTextureLayers; /**< Max layers in array textures */
3148 GLuint MaxTextureRectSize; /**< Max rectangle texture size, in pixes */
3149 GLuint MaxTextureCoordUnits;
3150 GLuint MaxCombinedTextureImageUnits;
3151 GLuint MaxTextureUnits; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3152 GLfloat MaxTextureMaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
3153 GLfloat MaxTextureLodBias; /**< GL_EXT_texture_lod_bias */
3154 GLuint MaxTextureBufferSize; /**< GL_ARB_texture_buffer_object */
3155
3156 GLuint TextureBufferOffsetAlignment; /**< GL_ARB_texture_buffer_range */
3157
3158 GLuint MaxArrayLockSize;
3159
3160 GLint SubPixelBits;
3161
3162 GLfloat MinPointSize, MaxPointSize; /**< aliased */
3163 GLfloat MinPointSizeAA, MaxPointSizeAA; /**< antialiased */
3164 GLfloat PointSizeGranularity;
3165 GLfloat MinLineWidth, MaxLineWidth; /**< aliased */
3166 GLfloat MinLineWidthAA, MaxLineWidthAA; /**< antialiased */
3167 GLfloat LineWidthGranularity;
3168
3169 GLuint MaxClipPlanes;
3170 GLuint MaxLights;
3171 GLfloat MaxShininess; /**< GL_NV_light_max_exponent */
3172 GLfloat MaxSpotExponent; /**< GL_NV_light_max_exponent */
3173
3174 GLuint MaxViewportWidth, MaxViewportHeight;
3175 GLuint MaxViewports; /**< GL_ARB_viewport_array */
3176 GLuint ViewportSubpixelBits; /**< GL_ARB_viewport_array */
3177 struct {
3178 GLfloat Min;
3179 GLfloat Max;
3180 } ViewportBounds; /**< GL_ARB_viewport_array */
3181
3182 struct gl_program_constants Program[MESA_SHADER_STAGES];
3183 GLuint MaxProgramMatrices;
3184 GLuint MaxProgramMatrixStackDepth;
3185
3186 struct {
3187 GLuint SamplesPassed;
3188 GLuint TimeElapsed;
3189 GLuint Timestamp;
3190 GLuint PrimitivesGenerated;
3191 GLuint PrimitivesWritten;
3192 } QueryCounterBits;
3193
3194 /** vertex array / buffer object bounds checking */
3195 GLboolean CheckArrayBounds;
3196
3197 GLuint MaxDrawBuffers; /**< GL_ARB_draw_buffers */
3198
3199 GLuint MaxColorAttachments; /**< GL_EXT_framebuffer_object */
3200 GLuint MaxRenderbufferSize; /**< GL_EXT_framebuffer_object */
3201 GLuint MaxSamples; /**< GL_ARB_framebuffer_object */
3202
3203 /** Number of varying vectors between any two shader stages. */
3204 GLuint MaxVarying;
3205
3206 /** @{
3207 * GL_ARB_uniform_buffer_object
3208 */
3209 GLuint MaxCombinedUniformBlocks;
3210 GLuint MaxUniformBufferBindings;
3211 GLuint MaxUniformBlockSize;
3212 GLuint UniformBufferOffsetAlignment;
3213 /** @} */
3214
3215 /** GL_ARB_geometry_shader4 */
3216 GLuint MaxGeometryOutputVertices;
3217 GLuint MaxGeometryTotalOutputComponents;
3218
3219 GLuint GLSLVersion; /**< GLSL version supported (ex: 120 = 1.20) */
3220
3221 /**
3222 * Changes default GLSL extension behavior from "error" to "warn". It's out
3223 * of spec, but it can make some apps work that otherwise wouldn't.
3224 */
3225 GLboolean ForceGLSLExtensionsWarn;
3226
3227 /**
3228 * If non-zero, forces GLSL shaders without the #version directive to behave
3229 * as if they began with "#version ForceGLSLVersion".
3230 */
3231 GLuint ForceGLSLVersion;
3232
3233 /**
3234 * Does the driver support real 32-bit integers? (Otherwise, integers are
3235 * simulated via floats.)
3236 */
3237 GLboolean NativeIntegers;
3238
3239 /**
3240 * If the driver supports real 32-bit integers, what integer value should be
3241 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3242 */
3243 GLuint UniformBooleanTrue;
3244
3245 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
3246 GLbitfield SupportedBumpUnits;
3247
3248 /**
3249 * Maximum amount of time, measured in nanseconds, that the server can wait.
3250 */
3251 GLuint64 MaxServerWaitTimeout;
3252
3253 /** GL_EXT_provoking_vertex */
3254 GLboolean QuadsFollowProvokingVertexConvention;
3255
3256 /** OpenGL version 3.0 */
3257 GLbitfield ContextFlags; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3258
3259 /** OpenGL version 3.2 */
3260 GLbitfield ProfileMask; /**< Mask of CONTEXT_x_PROFILE_BIT */
3261
3262 /** GL_EXT_transform_feedback */
3263 GLuint MaxTransformFeedbackBuffers;
3264 GLuint MaxTransformFeedbackSeparateComponents;
3265 GLuint MaxTransformFeedbackInterleavedComponents;
3266 GLuint MaxVertexStreams;
3267
3268 /** GL_EXT_gpu_shader4 */
3269 GLint MinProgramTexelOffset, MaxProgramTexelOffset;
3270
3271 /** GL_ARB_texture_gather */
3272 GLuint MinProgramTextureGatherOffset;
3273 GLuint MaxProgramTextureGatherOffset;
3274 GLuint MaxProgramTextureGatherComponents;
3275
3276 /* GL_ARB_robustness */
3277 GLenum ResetStrategy;
3278
3279 /* GL_ARB_blend_func_extended */
3280 GLuint MaxDualSourceDrawBuffers;
3281
3282 /**
3283 * Whether the implementation strips out and ignores texture borders.
3284 *
3285 * Many GPU hardware implementations don't support rendering with texture
3286 * borders and mipmapped textures. (Note: not static border color, but the
3287 * old 1-pixel border around each edge). Implementations then have to do
3288 * slow fallbacks to be correct, or just ignore the border and be fast but
3289 * wrong. Setting the flag strips the border off of TexImage calls,
3290 * providing "fast but wrong" at significantly reduced driver complexity.
3291 *
3292 * Texture borders are deprecated in GL 3.0.
3293 **/
3294 GLboolean StripTextureBorder;
3295
3296 /**
3297 * For drivers which can do a better job at eliminating unused uniforms
3298 * than the GLSL compiler.
3299 *
3300 * XXX Remove these as soon as a better solution is available.
3301 */
3302 GLboolean GLSLSkipStrictMaxUniformLimitCheck;
3303
3304 /**
3305 * Force software support for primitive restart in the VBO module.
3306 */
3307 GLboolean PrimitiveRestartInSoftware;
3308
3309 /**
3310 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3311 * than passing the transform feedback object to the drawing function.
3312 */
3313 GLboolean AlwaysUseGetTransformFeedbackVertexCount;
3314
3315 /** GL_ARB_map_buffer_alignment */
3316 GLuint MinMapBufferAlignment;
3317
3318 /**
3319 * Disable varying packing. This is out of spec, but potentially useful
3320 * for older platforms that supports a limited number of texture
3321 * indirections--on these platforms, unpacking the varyings in the fragment
3322 * shader increases the number of texture indirections by 1, which might
3323 * make some shaders not executable at all.
3324 *
3325 * Drivers that support transform feedback must set this value to GL_FALSE.
3326 */
3327 GLboolean DisableVaryingPacking;
3328
3329 /*
3330 * Maximum value supported for an index in DrawElements and friends.
3331 *
3332 * This must be at least (1ull<<24)-1. The default value is
3333 * (1ull<<32)-1.
3334 *
3335 * \since ES 3.0 or GL_ARB_ES3_compatibility
3336 * \sa _mesa_init_constants
3337 */
3338 GLuint64 MaxElementIndex;
3339
3340 /**
3341 * Disable interpretation of line continuations (lines ending with a
3342 * backslash character ('\') in GLSL source.
3343 */
3344 GLboolean DisableGLSLLineContinuations;
3345
3346 /** GL_ARB_texture_multisample */
3347 GLint MaxColorTextureSamples;
3348 GLint MaxDepthTextureSamples;
3349 GLint MaxIntegerSamples;
3350
3351 /** GL_ARB_shader_atomic_counters */
3352 GLuint MaxAtomicBufferBindings;
3353 GLuint MaxAtomicBufferSize;
3354 GLuint MaxCombinedAtomicBuffers;
3355 GLuint MaxCombinedAtomicCounters;
3356
3357 /** GL_ARB_vertex_attrib_binding */
3358 GLint MaxVertexAttribRelativeOffset;
3359 GLint MaxVertexAttribBindings;
3360
3361 /* GL_ARB_shader_image_load_store */
3362 GLuint MaxImageUnits;
3363 GLuint MaxCombinedImageUnitsAndFragmentOutputs;
3364 GLuint MaxImageSamples;
3365 GLuint MaxCombinedImageUniforms;
3366 };
3367
3368
3369 /**
3370 * Enable flag for each OpenGL extension. Different device drivers will
3371 * enable different extensions at runtime.
3372 */
3373 struct gl_extensions
3374 {
3375 GLboolean dummy; /* don't remove this! */
3376 GLboolean dummy_true; /* Set true by _mesa_init_extensions(). */
3377 GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */
3378 GLboolean ANGLE_texture_compression_dxt;
3379 GLboolean ARB_ES2_compatibility;
3380 GLboolean ARB_ES3_compatibility;
3381 GLboolean ARB_base_instance;
3382 GLboolean ARB_blend_func_extended;
3383 GLboolean ARB_color_buffer_float;
3384 GLboolean ARB_conservative_depth;
3385 GLboolean ARB_depth_buffer_float;
3386 GLboolean ARB_depth_clamp;
3387 GLboolean ARB_depth_texture;
3388 GLboolean ARB_draw_buffers_blend;
3389 GLboolean ARB_draw_elements_base_vertex;
3390 GLboolean ARB_draw_indirect;
3391 GLboolean ARB_draw_instanced;
3392 GLboolean ARB_fragment_coord_conventions;
3393 GLboolean ARB_fragment_program;
3394 GLboolean ARB_fragment_program_shadow;
3395 GLboolean ARB_fragment_shader;
3396 GLboolean ARB_framebuffer_object;
3397 GLboolean ARB_explicit_attrib_location;
3398 GLboolean ARB_geometry_shader4;
3399 GLboolean ARB_gpu_shader5;
3400 GLboolean ARB_half_float_pixel;
3401 GLboolean ARB_half_float_vertex;
3402 GLboolean ARB_instanced_arrays;
3403 GLboolean ARB_internalformat_query;
3404 GLboolean ARB_map_buffer_alignment;
3405 GLboolean ARB_map_buffer_range;
3406 GLboolean ARB_occlusion_query;
3407 GLboolean ARB_occlusion_query2;
3408 GLboolean ARB_point_sprite;
3409 GLboolean ARB_sample_shading;
3410 GLboolean ARB_seamless_cube_map;
3411 GLboolean ARB_shader_atomic_counters;
3412 GLboolean ARB_shader_bit_encoding;
3413 GLboolean ARB_shader_image_load_store;
3414 GLboolean ARB_shader_stencil_export;
3415 GLboolean ARB_shader_texture_lod;
3416 GLboolean ARB_shading_language_packing;
3417 GLboolean ARB_shading_language_420pack;
3418 GLboolean ARB_shadow;
3419 GLboolean ARB_sync;
3420 GLboolean ARB_texture_border_clamp;
3421 GLboolean ARB_texture_buffer_object;
3422 GLboolean ARB_texture_buffer_object_rgb32;
3423 GLboolean ARB_texture_buffer_range;
3424 GLboolean ARB_texture_compression_rgtc;
3425 GLboolean ARB_texture_cube_map;
3426 GLboolean ARB_texture_cube_map_array;
3427 GLboolean ARB_texture_env_combine;
3428 GLboolean ARB_texture_env_crossbar;
3429 GLboolean ARB_texture_env_dot3;
3430 GLboolean ARB_texture_float;
3431 GLboolean ARB_texture_gather;
3432 GLboolean ARB_texture_mirror_clamp_to_edge;
3433 GLboolean ARB_texture_multisample;
3434 GLboolean ARB_texture_non_power_of_two;
3435 GLboolean ARB_texture_query_levels;
3436 GLboolean ARB_texture_query_lod;
3437 GLboolean ARB_texture_rg;
3438 GLboolean ARB_texture_rgb10_a2ui;
3439 GLboolean ARB_texture_view;
3440 GLboolean ARB_timer_query;
3441 GLboolean ARB_transform_feedback2;
3442 GLboolean ARB_transform_feedback3;
3443 GLboolean ARB_transform_feedback_instanced;
3444 GLboolean ARB_uniform_buffer_object;
3445 GLboolean ARB_vertex_program;
3446 GLboolean ARB_vertex_shader;
3447 GLboolean ARB_vertex_type_10f_11f_11f_rev;
3448 GLboolean ARB_vertex_type_2_10_10_10_rev;
3449 GLboolean ARB_viewport_array;
3450 GLboolean EXT_blend_color;
3451 GLboolean EXT_blend_equation_separate;
3452 GLboolean EXT_blend_func_separate;
3453 GLboolean EXT_blend_minmax;
3454 GLboolean EXT_depth_bounds_test;
3455 GLboolean EXT_draw_buffers2;
3456 GLboolean EXT_framebuffer_blit;
3457 GLboolean EXT_framebuffer_multisample;
3458 GLboolean EXT_framebuffer_multisample_blit_scaled;
3459 GLboolean EXT_framebuffer_sRGB;
3460 GLboolean EXT_gpu_program_parameters;
3461 GLboolean EXT_gpu_shader4;
3462 GLboolean EXT_packed_float;
3463 GLboolean EXT_pixel_buffer_object;
3464 GLboolean EXT_point_parameters;
3465 GLboolean EXT_provoking_vertex;
3466 GLboolean EXT_separate_shader_objects;
3467 GLboolean EXT_shader_integer_mix;
3468 GLboolean EXT_stencil_two_side;
3469 GLboolean EXT_texture3D;
3470 GLboolean EXT_texture_array;
3471 GLboolean EXT_texture_compression_latc;
3472 GLboolean EXT_texture_compression_s3tc;
3473 GLboolean EXT_texture_env_dot3;
3474 GLboolean EXT_texture_filter_anisotropic;
3475 GLboolean EXT_texture_integer;
3476 GLboolean EXT_texture_mirror_clamp;
3477 GLboolean EXT_texture_shared_exponent;
3478 GLboolean EXT_texture_snorm;
3479 GLboolean EXT_texture_sRGB;
3480 GLboolean EXT_texture_sRGB_decode;
3481 GLboolean EXT_texture_swizzle;
3482 GLboolean EXT_transform_feedback;
3483 GLboolean EXT_timer_query;
3484 GLboolean EXT_vertex_array_bgra;
3485 GLboolean OES_standard_derivatives;
3486 /* vendor extensions */
3487 GLboolean AMD_performance_monitor;
3488 GLboolean AMD_seamless_cubemap_per_texture;
3489 GLboolean AMD_shader_trinary_minmax;
3490 GLboolean AMD_vertex_shader_layer;
3491 GLboolean APPLE_object_purgeable;
3492 GLboolean ATI_envmap_bumpmap;
3493 GLboolean ATI_texture_compression_3dc;
3494 GLboolean ATI_texture_mirror_once;
3495 GLboolean ATI_texture_env_combine3;
3496 GLboolean ATI_fragment_shader;
3497 GLboolean ATI_separate_stencil;
3498 GLboolean MESA_pack_invert;
3499 GLboolean MESA_ycbcr_texture;
3500 GLboolean NV_conditional_render;
3501 GLboolean NV_fog_distance;
3502 GLboolean NV_fragment_program_option;
3503 GLboolean NV_point_sprite;
3504 GLboolean NV_primitive_restart;
3505 GLboolean NV_texture_barrier;
3506 GLboolean NV_texture_env_combine4;
3507 GLboolean NV_texture_rectangle;
3508 GLboolean NV_vdpau_interop;
3509 GLboolean TDFX_texture_compression_FXT1;
3510 GLboolean OES_EGL_image;
3511 GLboolean OES_draw_texture;
3512 GLboolean OES_depth_texture_cube_map;
3513 GLboolean OES_EGL_image_external;
3514 GLboolean OES_compressed_ETC1_RGB8_texture;
3515 GLboolean extension_sentinel;
3516 /** The extension string */
3517 const GLubyte *String;
3518 /** Number of supported extensions */
3519 GLuint Count;
3520 };
3521
3522
3523 /**
3524 * A stack of matrices (projection, modelview, color, texture, etc).
3525 */
3526 struct gl_matrix_stack
3527 {
3528 GLmatrix *Top; /**< points into Stack */
3529 GLmatrix *Stack; /**< array [MaxDepth] of GLmatrix */
3530 GLuint Depth; /**< 0 <= Depth < MaxDepth */
3531 GLuint MaxDepth; /**< size of Stack[] array */
3532 GLuint DirtyFlag; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3533 };
3534
3535
3536 /**
3537 * \name Bits for image transfer operations
3538 * \sa __struct gl_contextRec::ImageTransferState.
3539 */
3540 /*@{*/
3541 #define IMAGE_SCALE_BIAS_BIT 0x1
3542 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3543 #define IMAGE_MAP_COLOR_BIT 0x4
3544 #define IMAGE_CLAMP_BIT 0x800
3545
3546
3547 /** Pixel Transfer ops */
3548 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3549 IMAGE_SHIFT_OFFSET_BIT | \
3550 IMAGE_MAP_COLOR_BIT)
3551
3552 /**
3553 * \name Bits to indicate what state has changed.
3554 */
3555 /*@{*/
3556 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3557 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3558 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3559 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3560 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3561 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3562 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3563 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3564 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3565 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3566 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3567 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3568 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3569 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3570 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3571 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3572 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3573 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3574 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3575 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3576 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3577 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3578 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3579 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3580 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3581 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3582 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3583 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3584 #define _NEW_BUFFER_OBJECT (1 << 28)
3585 #define _NEW_FRAG_CLAMP (1 << 29)
3586 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3587 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3588 #define _NEW_ALL ~0
3589 /*@}*/
3590
3591
3592 /**
3593 * Composite state flags
3594 */
3595 /*@{*/
3596 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3597 _NEW_TEXTURE | \
3598 _NEW_POINT | \
3599 _NEW_PROGRAM | \
3600 _NEW_MODELVIEW)
3601
3602 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3603 _NEW_FOG | \
3604 _NEW_PROGRAM)
3605
3606
3607 /*@}*/
3608
3609
3610
3611
3612 /* This has to be included here. */
3613 #include "dd.h"
3614
3615
3616 /**
3617 * Display list flags.
3618 * Strictly this is a tnl-private concept, but it doesn't seem
3619 * worthwhile adding a tnl private structure just to hold this one bit
3620 * of information:
3621 */
3622 #define DLIST_DANGLING_REFS 0x1
3623
3624
3625 /** Opaque declaration of display list payload data type */
3626 union gl_dlist_node;
3627
3628
3629 /**
3630 * Provide a location where information about a display list can be
3631 * collected. Could be extended with driverPrivate structures,
3632 * etc. in the future.
3633 */
3634 struct gl_display_list
3635 {
3636 GLuint Name;
3637 GLchar *Label; /**< GL_KHR_debug */
3638 GLbitfield Flags; /**< DLIST_x flags */
3639 /** The dlist commands are in a linked list of nodes */
3640 union gl_dlist_node *Head;
3641 };
3642
3643
3644 /**
3645 * State used during display list compilation and execution.
3646 */
3647 struct gl_dlist_state
3648 {
3649 GLuint CallDepth; /**< Current recursion calling depth */
3650
3651 struct gl_display_list *CurrentList; /**< List currently being compiled */
3652 union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */
3653 GLuint CurrentPos; /**< Index into current block of nodes */
3654
3655 GLvertexformat ListVtxfmt;
3656
3657 GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
3658 GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
3659
3660 GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
3661 GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
3662
3663 struct {
3664 /* State known to have been set by the currently-compiling display
3665 * list. Used to eliminate some redundant state changes.
3666 */
3667 GLenum ShadeModel;
3668 } Current;
3669 };
3670
3671 /** @{
3672 *
3673 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3674 * to small enums suitable for use as an array index.
3675 */
3676
3677 enum mesa_debug_source {
3678 MESA_DEBUG_SOURCE_API,
3679 MESA_DEBUG_SOURCE_WINDOW_SYSTEM,
3680 MESA_DEBUG_SOURCE_SHADER_COMPILER,
3681 MESA_DEBUG_SOURCE_THIRD_PARTY,
3682 MESA_DEBUG_SOURCE_APPLICATION,
3683 MESA_DEBUG_SOURCE_OTHER,
3684 MESA_DEBUG_SOURCE_COUNT
3685 };
3686
3687 enum mesa_debug_type {
3688 MESA_DEBUG_TYPE_ERROR,
3689 MESA_DEBUG_TYPE_DEPRECATED,
3690 MESA_DEBUG_TYPE_UNDEFINED,
3691 MESA_DEBUG_TYPE_PORTABILITY,
3692 MESA_DEBUG_TYPE_PERFORMANCE,
3693 MESA_DEBUG_TYPE_OTHER,
3694 MESA_DEBUG_TYPE_MARKER,
3695 MESA_DEBUG_TYPE_PUSH_GROUP,
3696 MESA_DEBUG_TYPE_POP_GROUP,
3697 MESA_DEBUG_TYPE_COUNT
3698 };
3699
3700 enum mesa_debug_severity {
3701 MESA_DEBUG_SEVERITY_LOW,
3702 MESA_DEBUG_SEVERITY_MEDIUM,
3703 MESA_DEBUG_SEVERITY_HIGH,
3704 MESA_DEBUG_SEVERITY_NOTIFICATION,
3705 MESA_DEBUG_SEVERITY_COUNT
3706 };
3707
3708 /** @} */
3709
3710 /**
3711 * An error, warning, or other piece of debug information for an application
3712 * to consume via GL_ARB_debug_output/GL_KHR_debug.
3713 */
3714 struct gl_debug_msg
3715 {
3716 enum mesa_debug_source source;
3717 enum mesa_debug_type type;
3718 GLuint id;
3719 enum mesa_debug_severity severity;
3720 GLsizei length;
3721 GLcharARB *message;
3722 };
3723
3724 struct gl_debug_namespace
3725 {
3726 struct _mesa_HashTable *IDs;
3727 unsigned ZeroID; /* a HashTable won't take zero, so store its state here */
3728 /** lists of IDs in the hash table at each severity */
3729 struct simple_node Severity[MESA_DEBUG_SEVERITY_COUNT];
3730 };
3731
3732 struct gl_debug_state
3733 {
3734 GLDEBUGPROC Callback;
3735 const void *CallbackData;
3736 GLboolean SyncOutput;
3737 GLboolean DebugOutput;
3738 GLboolean ARBCallback; /* Used to track if current callback is of type ARB_debug_output or KHR_debug */
3739 GLboolean Defaults[MAX_DEBUG_GROUP_STACK_DEPTH][MESA_DEBUG_SEVERITY_COUNT][MESA_DEBUG_SOURCE_COUNT][MESA_DEBUG_TYPE_COUNT];
3740 struct gl_debug_namespace Namespaces[MAX_DEBUG_GROUP_STACK_DEPTH][MESA_DEBUG_SOURCE_COUNT][MESA_DEBUG_TYPE_COUNT];
3741 struct gl_debug_msg Log[MAX_DEBUG_LOGGED_MESSAGES];
3742 struct gl_debug_msg DebugGroupMsgs[MAX_DEBUG_GROUP_STACK_DEPTH];
3743 GLint GroupStackDepth;
3744 GLint NumMessages;
3745 GLint NextMsg;
3746 GLint NextMsgLength; /* redundant, but copied here from Log[NextMsg].length
3747 for the sake of the offsetof() code in get.c */
3748 };
3749
3750 /**
3751 * Enum for the OpenGL APIs we know about and may support.
3752 *
3753 * NOTE: This must match the api_enum table in
3754 * src/mesa/main/get_hash_generator.py
3755 */
3756 typedef enum
3757 {
3758 API_OPENGL_COMPAT, /* legacy / compatibility contexts */
3759 API_OPENGLES,
3760 API_OPENGLES2,
3761 API_OPENGL_CORE,
3762 API_OPENGL_LAST = API_OPENGL_CORE
3763 } gl_api;
3764
3765 /**
3766 * Driver-specific state flags.
3767 *
3768 * These are or'd with gl_context::NewDriverState to notify a driver about
3769 * a state change. The driver sets the flags at context creation and
3770 * the meaning of the bits set is opaque to core Mesa.
3771 */
3772 struct gl_driver_flags
3773 {
3774 /** gl_context::Array::_DrawArrays (vertex array state) */
3775 GLbitfield NewArray;
3776
3777 /** gl_context::TransformFeedback::CurrentObject */
3778 GLbitfield NewTransformFeedback;
3779
3780 /** gl_context::RasterDiscard */
3781 GLbitfield NewRasterizerDiscard;
3782
3783 /**
3784 * gl_context::UniformBufferBindings
3785 * gl_shader_program::UniformBlocks
3786 */
3787 GLbitfield NewUniformBuffer;
3788
3789 /**
3790 * gl_context::AtomicBufferBindings
3791 */
3792 GLbitfield NewAtomicBuffer;
3793
3794 /**
3795 * gl_context::ImageUnits
3796 */
3797 GLbitfield NewImageUnits;
3798 };
3799
3800 struct gl_uniform_buffer_binding
3801 {
3802 struct gl_buffer_object *BufferObject;
3803 /** Start of uniform block data in the buffer */
3804 GLintptr Offset;
3805 /** Size of data allowed to be referenced from the buffer (in bytes) */
3806 GLsizeiptr Size;
3807 /**
3808 * glBindBufferBase() indicates that the Size should be ignored and only
3809 * limited by the current size of the BufferObject.
3810 */
3811 GLboolean AutomaticSize;
3812 };
3813
3814 /**
3815 * ARB_shader_image_load_store image unit.
3816 */
3817 struct gl_image_unit
3818 {
3819 /**
3820 * Texture object bound to this unit.
3821 */
3822 struct gl_texture_object *TexObj;
3823
3824 /**
3825 * Level of the texture object bound to this unit.
3826 */
3827 GLuint Level;
3828
3829 /**
3830 * \c GL_TRUE if the whole level is bound as an array of layers, \c
3831 * GL_FALSE if only some specific layer of the texture is bound.
3832 * \sa Layer
3833 */
3834 GLboolean Layered;
3835
3836 /**
3837 * Layer of the texture object bound to this unit, or zero if the
3838 * whole level is bound.
3839 */
3840 GLuint Layer;
3841
3842 /**
3843 * Access allowed to this texture image. Either \c GL_READ_ONLY,
3844 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
3845 */
3846 GLenum Access;
3847
3848 /**
3849 * GL internal format that determines the interpretation of the
3850 * image memory when shader image operations are performed through
3851 * this unit.
3852 */
3853 GLenum Format;
3854
3855 /**
3856 * Mesa format corresponding to \c Format.
3857 */
3858 gl_format _ActualFormat;
3859
3860 /**
3861 * GL_TRUE if the state of this image unit is valid and access from
3862 * the shader is allowed. Otherwise loads from this unit should
3863 * return zero and stores should have no effect.
3864 */
3865 GLboolean _Valid;
3866 };
3867
3868 /**
3869 * Binding point for an atomic counter buffer object.
3870 */
3871 struct gl_atomic_buffer_binding
3872 {
3873 struct gl_buffer_object *BufferObject;
3874 GLintptr Offset;
3875 GLsizeiptr Size;
3876 };
3877
3878 /**
3879 * Mesa rendering context.
3880 *
3881 * This is the central context data structure for Mesa. Almost all
3882 * OpenGL state is contained in this structure.
3883 * Think of this as a base class from which device drivers will derive
3884 * sub classes.
3885 */
3886 struct gl_context
3887 {
3888 /** State possibly shared with other contexts in the address space */
3889 struct gl_shared_state *Shared;
3890
3891 /** \name API function pointer tables */
3892 /*@{*/
3893 gl_api API;
3894 /**
3895 * The current dispatch table for non-displaylist-saving execution, either
3896 * BeginEnd or OutsideBeginEnd
3897 */
3898 struct _glapi_table *Exec;
3899 /**
3900 * The normal dispatch table for non-displaylist-saving, non-begin/end
3901 */
3902 struct _glapi_table *OutsideBeginEnd;
3903 /** The dispatch table used between glNewList() and glEndList() */
3904 struct _glapi_table *Save;
3905 /**
3906 * The dispatch table used between glBegin() and glEnd() (outside of a
3907 * display list). Only valid functions between those two are set, which is
3908 * mostly just the set in a GLvertexformat struct.
3909 */
3910 struct _glapi_table *BeginEnd;
3911 /**
3912 * Tracks the current dispatch table out of the 3 above, so that it can be
3913 * re-set on glXMakeCurrent().
3914 */
3915 struct _glapi_table *CurrentDispatch;
3916 /*@}*/
3917
3918 struct gl_config Visual;
3919 struct gl_framebuffer *DrawBuffer; /**< buffer for writing */
3920 struct gl_framebuffer *ReadBuffer; /**< buffer for reading */
3921 struct gl_framebuffer *WinSysDrawBuffer; /**< set with MakeCurrent */
3922 struct gl_framebuffer *WinSysReadBuffer; /**< set with MakeCurrent */
3923
3924 /**
3925 * Device driver function pointer table
3926 */
3927 struct dd_function_table Driver;
3928
3929 /** Core/Driver constants */
3930 struct gl_constants Const;
3931
3932 /** \name The various 4x4 matrix stacks */
3933 /*@{*/
3934 struct gl_matrix_stack ModelviewMatrixStack;
3935 struct gl_matrix_stack ProjectionMatrixStack;
3936 struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS];
3937 struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
3938 struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */
3939 /*@}*/
3940
3941 /** Combined modelview and projection matrix */
3942 GLmatrix _ModelProjectMatrix;
3943
3944 /** \name Display lists */
3945 struct gl_dlist_state ListState;
3946
3947 GLboolean ExecuteFlag; /**< Execute GL commands? */
3948 GLboolean CompileFlag; /**< Compile GL commands into display list? */
3949
3950 /** Extension information */
3951 struct gl_extensions Extensions;
3952
3953 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3954 GLuint Version;
3955 char *VersionString;
3956
3957 /** \name State attribute stack (for glPush/PopAttrib) */
3958 /*@{*/
3959 GLuint AttribStackDepth;
3960 struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
3961 /*@}*/
3962
3963 /** \name Renderer attribute groups
3964 *
3965 * We define a struct for each attribute group to make pushing and popping
3966 * attributes easy. Also it's a good organization.
3967 */
3968 /*@{*/
3969 struct gl_accum_attrib Accum; /**< Accum buffer attributes */
3970 struct gl_colorbuffer_attrib Color; /**< Color buffer attributes */
3971 struct gl_current_attrib Current; /**< Current attributes */
3972 struct gl_depthbuffer_attrib Depth; /**< Depth buffer attributes */
3973 struct gl_eval_attrib Eval; /**< Eval attributes */
3974 struct gl_fog_attrib Fog; /**< Fog attributes */
3975 struct gl_hint_attrib Hint; /**< Hint attributes */
3976 struct gl_light_attrib Light; /**< Light attributes */
3977 struct gl_line_attrib Line; /**< Line attributes */
3978 struct gl_list_attrib List; /**< List attributes */
3979 struct gl_multisample_attrib Multisample;
3980 struct gl_pixel_attrib Pixel; /**< Pixel attributes */
3981 struct gl_point_attrib Point; /**< Point attributes */
3982 struct gl_polygon_attrib Polygon; /**< Polygon attributes */
3983 GLuint PolygonStipple[32]; /**< Polygon stipple */
3984 struct gl_scissor_attrib Scissor; /**< Scissor attributes */
3985 struct gl_stencil_attrib Stencil; /**< Stencil buffer attributes */
3986 struct gl_texture_attrib Texture; /**< Texture attributes */
3987 struct gl_transform_attrib Transform; /**< Transformation attributes */
3988 struct gl_viewport_attrib ViewportArray[MAX_VIEWPORTS]; /**< Viewport attributes */
3989 /*@}*/
3990
3991 /** \name Client attribute stack */
3992 /*@{*/
3993 GLuint ClientAttribStackDepth;
3994 struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
3995 /*@}*/
3996
3997 /** \name Client attribute groups */
3998 /*@{*/
3999 struct gl_array_attrib Array; /**< Vertex arrays */
4000 struct gl_pixelstore_attrib Pack; /**< Pixel packing */
4001 struct gl_pixelstore_attrib Unpack; /**< Pixel unpacking */
4002 struct gl_pixelstore_attrib DefaultPacking; /**< Default params */
4003 /*@}*/
4004
4005 /** \name Other assorted state (not pushed/popped on attribute stack) */
4006 /*@{*/
4007 struct gl_pixelmaps PixelMaps;
4008
4009 struct gl_evaluators EvalMap; /**< All evaluators */
4010 struct gl_feedback Feedback; /**< Feedback */
4011 struct gl_selection Select; /**< Selection */
4012
4013 struct gl_program_state Program; /**< general program state */
4014 struct gl_vertex_program_state VertexProgram;
4015 struct gl_fragment_program_state FragmentProgram;
4016 struct gl_geometry_program_state GeometryProgram;
4017 struct gl_ati_fragment_shader_state ATIFragmentShader;
4018
4019 struct gl_shader_state Shader; /**< GLSL shader object state */
4020 struct gl_shader_compiler_options ShaderCompilerOptions[MESA_SHADER_STAGES];
4021
4022 struct gl_query_state Query; /**< occlusion, timer queries */
4023
4024 struct gl_transform_feedback_state TransformFeedback;
4025
4026 struct gl_perf_monitor_state PerfMonitor;
4027
4028 struct gl_buffer_object *DrawIndirectBuffer; /** < GL_ARB_draw_indirect */
4029
4030 struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
4031 struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */
4032
4033 /**
4034 * Current GL_ARB_uniform_buffer_object binding referenced by
4035 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4036 */
4037 struct gl_buffer_object *UniformBuffer;
4038
4039 /**
4040 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4041 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4042 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4043 * shader program.
4044 */
4045 struct gl_uniform_buffer_binding
4046 UniformBufferBindings[MAX_COMBINED_UNIFORM_BUFFERS];
4047
4048 /**
4049 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4050 * target.
4051 */
4052 struct gl_buffer_object *AtomicBuffer;
4053
4054 /**
4055 * Array of atomic counter buffer binding points.
4056 */
4057 struct gl_atomic_buffer_binding
4058 AtomicBufferBindings[MAX_COMBINED_ATOMIC_BUFFERS];
4059
4060 /**
4061 * Array of image units for ARB_shader_image_load_store.
4062 */
4063 struct gl_image_unit ImageUnits[MAX_IMAGE_UNITS];
4064
4065 /*@}*/
4066
4067 struct gl_meta_state *Meta; /**< for "meta" operations */
4068
4069 /* GL_EXT_framebuffer_object */
4070 struct gl_renderbuffer *CurrentRenderbuffer;
4071
4072 GLenum ErrorValue; /**< Last error code */
4073
4074 /**
4075 * Recognize and silence repeated error debug messages in buggy apps.
4076 */
4077 const char *ErrorDebugFmtString;
4078 GLuint ErrorDebugCount;
4079
4080 /* GL_ARB_debug_output/GL_KHR_debug */
4081 struct gl_debug_state Debug;
4082
4083 GLenum RenderMode; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4084 GLbitfield NewState; /**< bitwise-or of _NEW_* flags */
4085 GLbitfield NewDriverState;/**< bitwise-or of flags from DriverFlags */
4086
4087 struct gl_driver_flags DriverFlags;
4088
4089 GLboolean ViewportInitialized; /**< has viewport size been initialized? */
4090
4091 GLbitfield64 varying_vp_inputs; /**< mask of VERT_BIT_* flags */
4092
4093 /** \name Derived state */
4094 GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
4095 GLfloat _EyeZDir[3];
4096 GLfloat _ModelViewInvScale;
4097 GLboolean _NeedEyeCoords;
4098 GLboolean _ForceEyeCoords;
4099
4100 GLuint TextureStateTimestamp; /**< detect changes to shared state */
4101
4102 struct gl_list_extensions *ListExt; /**< driver dlist extensions */
4103
4104 /** \name For debugging/development only */
4105 /*@{*/
4106 GLboolean FirstTimeCurrent;
4107 /*@}*/
4108
4109 /** software compression/decompression supported or not */
4110 GLboolean Mesa_DXTn;
4111
4112 GLboolean TextureFormatSupported[MESA_FORMAT_COUNT];
4113
4114 GLboolean RasterDiscard; /**< GL_RASTERIZER_DISCARD */
4115
4116 /**
4117 * \name Hooks for module contexts.
4118 *
4119 * These will eventually live in the driver or elsewhere.
4120 */
4121 /*@{*/
4122 void *swrast_context;
4123 void *swsetup_context;
4124 void *swtnl_context;
4125 struct vbo_context *vbo_context;
4126 struct st_context *st;
4127 void *aelt_context;
4128 /*@}*/
4129
4130 /**
4131 * \name NV_vdpau_interop
4132 */
4133 /*@{*/
4134 const void *vdpDevice;
4135 const void *vdpGetProcAddress;
4136 struct set *vdpSurfaces;
4137 /*@}*/
4138
4139 /**
4140 * Has this context observed a GPU reset in any context in the share group?
4141 *
4142 * Once this field becomes true, it is never reset to false.
4143 */
4144 GLboolean ShareGroupReset;
4145 };
4146
4147
4148 #ifdef DEBUG
4149 extern int MESA_VERBOSE;
4150 extern int MESA_DEBUG_FLAGS;
4151 # define MESA_FUNCTION __FUNCTION__
4152 #else
4153 # define MESA_VERBOSE 0
4154 # define MESA_DEBUG_FLAGS 0
4155 # define MESA_FUNCTION "a function"
4156 # ifndef NDEBUG
4157 # define NDEBUG
4158 # endif
4159 #endif
4160
4161
4162 /** The MESA_VERBOSE var is a bitmask of these flags */
4163 enum _verbose
4164 {
4165 VERBOSE_VARRAY = 0x0001,
4166 VERBOSE_TEXTURE = 0x0002,
4167 VERBOSE_MATERIAL = 0x0004,
4168 VERBOSE_PIPELINE = 0x0008,
4169 VERBOSE_DRIVER = 0x0010,
4170 VERBOSE_STATE = 0x0020,
4171 VERBOSE_API = 0x0040,
4172 VERBOSE_DISPLAY_LIST = 0x0100,
4173 VERBOSE_LIGHTING = 0x0200,
4174 VERBOSE_PRIMS = 0x0400,
4175 VERBOSE_VERTS = 0x0800,
4176 VERBOSE_DISASSEM = 0x1000,
4177 VERBOSE_DRAW = 0x2000,
4178 VERBOSE_SWAPBUFFERS = 0x4000
4179 };
4180
4181
4182 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4183 enum _debug
4184 {
4185 DEBUG_SILENT = (1 << 0),
4186 DEBUG_ALWAYS_FLUSH = (1 << 1),
4187 DEBUG_INCOMPLETE_TEXTURE = (1 << 2),
4188 DEBUG_INCOMPLETE_FBO = (1 << 3)
4189 };
4190
4191
4192
4193 #ifdef __cplusplus
4194 }
4195 #endif
4196
4197 #endif /* MTYPES_H */