2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include "main/glheader.h"
38 #include "main/config.h"
39 #include "main/mfeatures.h"
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
42 #include "main/simple_list.h" /* struct simple_node */
43 #include "main/formats.h" /* MESA_FORMAT_COUNT */
52 * \name 64-bit extension of GLbitfield.
55 typedef GLuint64 GLbitfield64
;
57 /** Set a single bit */
58 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
62 * \name Some forward type declarations
65 struct _mesa_HashTable
;
66 struct gl_attrib_node
;
67 struct gl_list_extensions
;
69 struct gl_program_cache
;
70 struct gl_texture_object
;
73 struct gl_uniform_storage
;
77 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
78 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
79 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
80 #define PRIM_UNKNOWN (GL_POLYGON+3)
84 * Shader stages. Note that these will become 5 with tessellation.
85 * These MUST have the same values as gallium's PIPE_SHADER_*
89 MESA_SHADER_VERTEX
= 0,
90 MESA_SHADER_FRAGMENT
= 1,
91 MESA_SHADER_GEOMETRY
= 2,
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).
107 VERT_ATTRIB_WEIGHT
= 1,
108 VERT_ATTRIB_NORMAL
= 2,
109 VERT_ATTRIB_COLOR0
= 3,
110 VERT_ATTRIB_COLOR1
= 4,
112 VERT_ATTRIB_COLOR_INDEX
= 6,
113 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
114 VERT_ATTRIB_EDGEFLAG
= 7,
115 VERT_ATTRIB_TEX0
= 8,
116 VERT_ATTRIB_TEX1
= 9,
117 VERT_ATTRIB_TEX2
= 10,
118 VERT_ATTRIB_TEX3
= 11,
119 VERT_ATTRIB_TEX4
= 12,
120 VERT_ATTRIB_TEX5
= 13,
121 VERT_ATTRIB_TEX6
= 14,
122 VERT_ATTRIB_TEX7
= 15,
123 VERT_ATTRIB_GENERIC0
= 16,
124 VERT_ATTRIB_GENERIC1
= 17,
125 VERT_ATTRIB_GENERIC2
= 18,
126 VERT_ATTRIB_GENERIC3
= 19,
127 VERT_ATTRIB_GENERIC4
= 20,
128 VERT_ATTRIB_GENERIC5
= 21,
129 VERT_ATTRIB_GENERIC6
= 22,
130 VERT_ATTRIB_GENERIC7
= 23,
131 VERT_ATTRIB_GENERIC8
= 24,
132 VERT_ATTRIB_GENERIC9
= 25,
133 VERT_ATTRIB_GENERIC10
= 26,
134 VERT_ATTRIB_GENERIC11
= 27,
135 VERT_ATTRIB_GENERIC12
= 28,
136 VERT_ATTRIB_GENERIC13
= 29,
137 VERT_ATTRIB_GENERIC14
= 30,
138 VERT_ATTRIB_GENERIC15
= 31,
143 * Bitflags for vertex attributes.
144 * These are used in bitfields in many places.
147 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
148 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
149 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
150 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
151 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
152 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
153 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
154 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
155 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
156 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
157 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
158 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
159 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
160 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
161 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
162 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
163 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
164 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
165 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
166 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
167 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
168 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
169 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
170 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
171 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
172 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
173 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
174 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
175 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
176 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
177 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
178 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
180 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
181 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
186 * Indexes for vertex program result attributes. Note that
187 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
188 * assumptions about the layout of this enum.
192 VERT_RESULT_HPOS
= 0,
193 VERT_RESULT_COL0
= 1,
194 VERT_RESULT_COL1
= 2,
195 VERT_RESULT_FOGC
= 3,
196 VERT_RESULT_TEX0
= 4,
197 VERT_RESULT_TEX1
= 5,
198 VERT_RESULT_TEX2
= 6,
199 VERT_RESULT_TEX3
= 7,
200 VERT_RESULT_TEX4
= 8,
201 VERT_RESULT_TEX5
= 9,
202 VERT_RESULT_TEX6
= 10,
203 VERT_RESULT_TEX7
= 11,
204 VERT_RESULT_PSIZ
= 12,
205 VERT_RESULT_BFC0
= 13,
206 VERT_RESULT_BFC1
= 14,
207 VERT_RESULT_EDGE
= 15,
208 VERT_RESULT_CLIP_VERTEX
= 16,
209 VERT_RESULT_CLIP_DIST0
= 17,
210 VERT_RESULT_CLIP_DIST1
= 18,
211 VERT_RESULT_VAR0
= 19, /**< shader varying */
212 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
216 /*********************************************/
219 * Indexes for geometry program attributes.
223 GEOM_ATTRIB_POSITION
= 0,
224 GEOM_ATTRIB_COLOR0
= 1,
225 GEOM_ATTRIB_COLOR1
= 2,
226 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
227 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
228 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
229 GEOM_ATTRIB_POINT_SIZE
= 6,
230 GEOM_ATTRIB_CLIP_VERTEX
= 7,
231 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
232 GEOM_ATTRIB_TEX_COORD
= 9,
234 GEOM_ATTRIB_VAR0
= 16,
235 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
239 * Bitflags for geometry attributes.
240 * These are used in bitfields in many places.
243 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
244 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
245 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
246 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
247 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
248 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
249 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
250 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
251 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
252 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
253 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
255 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
260 * Indexes for geometry program result attributes
265 GEOM_RESULT_COL0
= 1,
266 GEOM_RESULT_COL1
= 2,
267 GEOM_RESULT_SCOL0
= 3,
268 GEOM_RESULT_SCOL1
= 4,
269 GEOM_RESULT_FOGC
= 5,
270 GEOM_RESULT_TEX0
= 6,
271 GEOM_RESULT_TEX1
= 7,
272 GEOM_RESULT_TEX2
= 8,
273 GEOM_RESULT_TEX3
= 9,
274 GEOM_RESULT_TEX4
= 10,
275 GEOM_RESULT_TEX5
= 11,
276 GEOM_RESULT_TEX6
= 12,
277 GEOM_RESULT_TEX7
= 13,
278 GEOM_RESULT_PSIZ
= 14,
279 GEOM_RESULT_CLPV
= 15,
280 GEOM_RESULT_PRID
= 16,
281 GEOM_RESULT_LAYR
= 17,
282 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
283 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
284 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
289 * Indexes for fragment program input attributes. Note that
290 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
291 * assumptions about the layout of this enum.
295 FRAG_ATTRIB_WPOS
= 0,
296 FRAG_ATTRIB_COL0
= 1,
297 FRAG_ATTRIB_COL1
= 2,
298 FRAG_ATTRIB_FOGC
= 3,
299 FRAG_ATTRIB_TEX0
= 4,
300 FRAG_ATTRIB_TEX1
= 5,
301 FRAG_ATTRIB_TEX2
= 6,
302 FRAG_ATTRIB_TEX3
= 7,
303 FRAG_ATTRIB_TEX4
= 8,
304 FRAG_ATTRIB_TEX5
= 9,
305 FRAG_ATTRIB_TEX6
= 10,
306 FRAG_ATTRIB_TEX7
= 11,
307 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
308 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
309 FRAG_ATTRIB_CLIP_DIST0
= 14,
310 FRAG_ATTRIB_CLIP_DIST1
= 15,
311 FRAG_ATTRIB_VAR0
= 16, /**< shader varying */
312 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
317 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
319 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
321 * gl_vert_result values which have no corresponding gl_frag_attrib
322 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
323 * VERT_RESULT_EDGE) are converted to a value of -1.
326 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result
)
328 if (vert_result
>= VERT_RESULT_CLIP_DIST0
)
329 return vert_result
- VERT_RESULT_CLIP_DIST0
+ FRAG_ATTRIB_CLIP_DIST0
;
330 else if (vert_result
<= VERT_RESULT_TEX7
)
338 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
340 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
342 * gl_frag_attrib values which have no corresponding gl_vert_result
343 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
346 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib
)
348 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
350 else if (frag_attrib
>= FRAG_ATTRIB_CLIP_DIST0
)
351 return frag_attrib
- FRAG_ATTRIB_CLIP_DIST0
+ VERT_RESULT_CLIP_DIST0
;
358 * Bitflags for fragment program input attributes.
361 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
362 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
363 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
364 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
365 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
366 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
367 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
368 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
369 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
370 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
371 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
372 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
373 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
374 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
375 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
377 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
378 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
380 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
392 * Fragment program results
396 FRAG_RESULT_DEPTH
= 0,
397 FRAG_RESULT_STENCIL
= 1,
398 /* If a single color should be written to all render targets, this
399 * register is written. No FRAG_RESULT_DATAn will be written.
401 FRAG_RESULT_COLOR
= 2,
403 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
404 * or ARB_fragment_program fragment.color[n]) color results. If
405 * any are written, FRAG_RESULT_COLOR will not be written.
407 FRAG_RESULT_DATA0
= 3,
408 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
413 * Indexes for all renderbuffers
417 /* the four standard color buffers */
425 /* optional aux buffer */
427 /* generic renderbuffers */
440 * Bit flags for all renderbuffers
442 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
443 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
444 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
445 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
446 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
447 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
448 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
449 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
450 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
451 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
452 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
453 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
454 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
455 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
456 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
457 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
458 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
459 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
460 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
463 * Mask of all the color buffer bits (but not accum).
465 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
466 BUFFER_BIT_BACK_LEFT | \
467 BUFFER_BIT_FRONT_RIGHT | \
468 BUFFER_BIT_BACK_RIGHT | \
470 BUFFER_BIT_COLOR0 | \
471 BUFFER_BIT_COLOR1 | \
472 BUFFER_BIT_COLOR2 | \
473 BUFFER_BIT_COLOR3 | \
474 BUFFER_BIT_COLOR4 | \
475 BUFFER_BIT_COLOR5 | \
476 BUFFER_BIT_COLOR6 | \
481 * Framebuffer configuration (aka visual / pixelformat)
482 * Note: some of these fields should be boolean, but it appears that
483 * code in drivers/dri/common/util.c requires int-sized fields.
489 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
490 GLuint doubleBufferMode
;
493 GLboolean haveAccumBuffer
;
494 GLboolean haveDepthBuffer
;
495 GLboolean haveStencilBuffer
;
497 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
498 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
499 GLint rgbBits
; /* total bits for rgb */
500 GLint indexBits
; /* total bits for colorindex */
502 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
510 /* EXT_visual_rating / GLX 1.2 */
513 /* EXT_visual_info / GLX 1.2 */
514 GLint transparentPixel
;
515 /* colors are floats scaled to ints */
516 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
517 GLint transparentIndex
;
519 /* ARB_multisample / SGIS_multisample */
523 /* SGIX_pbuffer / GLX 1.3 */
524 GLint maxPbufferWidth
;
525 GLint maxPbufferHeight
;
526 GLint maxPbufferPixels
;
527 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
528 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
530 /* OML_swap_method */
533 /* EXT_texture_from_pixmap */
534 GLint bindToTextureRgb
;
535 GLint bindToTextureRgba
;
536 GLint bindToMipmapTexture
;
537 GLint bindToTextureTargets
;
540 /* EXT_framebuffer_sRGB */
546 * \name Bit flags used for updating material values.
549 #define MAT_ATTRIB_FRONT_AMBIENT 0
550 #define MAT_ATTRIB_BACK_AMBIENT 1
551 #define MAT_ATTRIB_FRONT_DIFFUSE 2
552 #define MAT_ATTRIB_BACK_DIFFUSE 3
553 #define MAT_ATTRIB_FRONT_SPECULAR 4
554 #define MAT_ATTRIB_BACK_SPECULAR 5
555 #define MAT_ATTRIB_FRONT_EMISSION 6
556 #define MAT_ATTRIB_BACK_EMISSION 7
557 #define MAT_ATTRIB_FRONT_SHININESS 8
558 #define MAT_ATTRIB_BACK_SHININESS 9
559 #define MAT_ATTRIB_FRONT_INDEXES 10
560 #define MAT_ATTRIB_BACK_INDEXES 11
561 #define MAT_ATTRIB_MAX 12
563 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
564 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
565 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
566 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
567 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
568 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
570 #define MAT_INDEX_AMBIENT 0
571 #define MAT_INDEX_DIFFUSE 1
572 #define MAT_INDEX_SPECULAR 2
574 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
575 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
576 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
577 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
578 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
579 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
580 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
581 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
582 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
583 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
584 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
585 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
588 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
589 MAT_BIT_FRONT_AMBIENT | \
590 MAT_BIT_FRONT_DIFFUSE | \
591 MAT_BIT_FRONT_SPECULAR | \
592 MAT_BIT_FRONT_SHININESS | \
593 MAT_BIT_FRONT_INDEXES)
595 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
596 MAT_BIT_BACK_AMBIENT | \
597 MAT_BIT_BACK_DIFFUSE | \
598 MAT_BIT_BACK_SPECULAR | \
599 MAT_BIT_BACK_SHININESS | \
600 MAT_BIT_BACK_INDEXES)
602 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
606 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
607 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
610 * Material shininess lookup table.
614 struct gl_shine_tab
*next
, *prev
;
615 GLfloat tab
[SHINE_TABLE_SIZE
+1];
622 * Light source state.
626 struct gl_light
*next
; /**< double linked list with sentinel */
627 struct gl_light
*prev
;
629 GLfloat Ambient
[4]; /**< ambient color */
630 GLfloat Diffuse
[4]; /**< diffuse color */
631 GLfloat Specular
[4]; /**< specular color */
632 GLfloat EyePosition
[4]; /**< position in eye coordinates */
633 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
634 GLfloat SpotExponent
;
635 GLfloat SpotCutoff
; /**< in degrees */
636 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
637 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
638 GLfloat ConstantAttenuation
;
639 GLfloat LinearAttenuation
;
640 GLfloat QuadraticAttenuation
;
641 GLboolean Enabled
; /**< On/off flag */
644 * \name Derived fields
647 GLbitfield _Flags
; /**< State */
649 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
650 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
651 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
652 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
653 GLfloat _VP_inf_spot_attenuation
;
655 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
656 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
657 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
658 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
659 GLfloat _dli
; /**< CI diffuse light intensity */
660 GLfloat _sli
; /**< CI specular light intensity */
670 GLfloat Ambient
[4]; /**< ambient color */
671 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
672 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
673 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
674 * or GL_SEPARATE_SPECULAR_COLOR */
683 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
688 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
690 struct gl_accum_attrib
692 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
697 * Used for storing clear color, texture border color, etc.
698 * The float values are typically unclamped.
709 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
711 struct gl_colorbuffer_attrib
713 GLuint ClearIndex
; /**< Index for glClear */
714 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
715 GLuint IndexMask
; /**< Color index write mask */
716 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
718 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
721 * \name alpha testing
724 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
725 GLenum AlphaFunc
; /**< Alpha test function */
726 GLfloat AlphaRefUnclamped
;
727 GLclampf AlphaRef
; /**< Alpha reference value */
734 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
736 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
737 * control, only on the fixed-pointness of the render target.
738 * The query does however depend on fragment color clamping.
740 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
741 GLfloat BlendColor
[4]; /**< Blending color */
745 GLenum SrcRGB
; /**< RGB blend source term */
746 GLenum DstRGB
; /**< RGB blend dest term */
747 GLenum SrcA
; /**< Alpha blend source term */
748 GLenum DstA
; /**< Alpha blend dest term */
749 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
750 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
751 } Blend
[MAX_DRAW_BUFFERS
];
752 /** Are the blend func terms currently different for each buffer/target? */
753 GLboolean _BlendFuncPerBuffer
;
754 /** Are the blend equations currently different for each buffer/target? */
755 GLboolean _BlendEquationPerBuffer
;
762 GLenum LogicOp
; /**< Logic operator */
763 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
764 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
767 GLboolean DitherFlag
; /**< Dither enable flag */
769 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
770 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
771 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
772 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
774 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
779 * Current attribute group (GL_CURRENT_BIT).
781 struct gl_current_attrib
784 * \name Current vertex attributes.
785 * \note Values are valid only after FLUSH_VERTICES has been called.
786 * \note Index and Edgeflag current values are stored as floats in the
787 * SIX and SEVEN attribute slots.
789 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
792 * \name Current raster position attributes (always valid).
793 * \note This set of attributes is very similar to the SWvertex struct.
796 GLfloat RasterPos
[4];
797 GLfloat RasterDistance
;
798 GLfloat RasterColor
[4];
799 GLfloat RasterSecondaryColor
[4];
800 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
801 GLboolean RasterPosValid
;
807 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
809 struct gl_depthbuffer_attrib
811 GLenum Func
; /**< Function for depth buffer compare */
812 GLclampd Clear
; /**< Value to clear depth buffer to */
813 GLboolean Test
; /**< Depth buffering enabled flag */
814 GLboolean Mask
; /**< Depth buffer writable? */
815 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
816 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
821 * Evaluator attribute group (GL_EVAL_BIT).
823 struct gl_eval_attrib
829 GLboolean Map1Color4
;
831 GLboolean Map1Normal
;
832 GLboolean Map1TextureCoord1
;
833 GLboolean Map1TextureCoord2
;
834 GLboolean Map1TextureCoord3
;
835 GLboolean Map1TextureCoord4
;
836 GLboolean Map1Vertex3
;
837 GLboolean Map1Vertex4
;
838 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
839 GLboolean Map2Color4
;
841 GLboolean Map2Normal
;
842 GLboolean Map2TextureCoord1
;
843 GLboolean Map2TextureCoord2
;
844 GLboolean Map2TextureCoord3
;
845 GLboolean Map2TextureCoord4
;
846 GLboolean Map2Vertex3
;
847 GLboolean Map2Vertex4
;
848 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
849 GLboolean AutoNormal
;
853 * \name Map Grid endpoints and divisions and calculated du values
857 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
858 GLint MapGrid2un
, MapGrid2vn
;
859 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
860 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
866 * Fog attribute group (GL_FOG_BIT).
870 GLboolean Enabled
; /**< Fog enabled flag */
871 GLfloat ColorUnclamped
[4]; /**< Fog color */
872 GLfloat Color
[4]; /**< Fog color */
873 GLfloat Density
; /**< Density >= 0.0 */
874 GLfloat Start
; /**< Start distance in eye coords */
875 GLfloat End
; /**< End distance in eye coords */
876 GLfloat Index
; /**< Fog index */
877 GLenum Mode
; /**< Fog mode */
878 GLboolean ColorSumEnabled
;
879 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
880 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
881 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
886 * \brief Layout qualifiers for gl_FragDepth.
888 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
889 * a layout qualifier.
891 * \see enum ir_depth_layout
893 enum gl_frag_depth_layout
{
894 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
895 FRAG_DEPTH_LAYOUT_ANY
,
896 FRAG_DEPTH_LAYOUT_GREATER
,
897 FRAG_DEPTH_LAYOUT_LESS
,
898 FRAG_DEPTH_LAYOUT_UNCHANGED
903 * Hint attribute group (GL_HINT_BIT).
905 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
907 struct gl_hint_attrib
909 GLenum PerspectiveCorrection
;
912 GLenum PolygonSmooth
;
914 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
915 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
916 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
917 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
924 #define LIGHT_SPOT 0x1
925 #define LIGHT_LOCAL_VIEWER 0x2
926 #define LIGHT_POSITIONAL 0x4
927 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
932 * Lighting attribute group (GL_LIGHT_BIT).
934 struct gl_light_attrib
936 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
937 struct gl_lightmodel Model
; /**< Lighting model */
940 * Must flush FLUSH_VERTICES before referencing:
943 struct gl_material Material
; /**< Includes front & back values */
946 GLboolean Enabled
; /**< Lighting enabled flag */
947 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
948 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
949 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
950 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
951 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
952 GLboolean ColorMaterialEnabled
;
953 GLenum ClampVertexColor
;
954 GLboolean _ClampVertexColor
;
956 struct gl_light EnabledList
; /**< List sentinel */
959 * Derived state for optimizations:
962 GLboolean _NeedEyeCoords
;
963 GLboolean _NeedVertices
; /**< Use fast shader? */
964 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
965 GLfloat _BaseColor
[2][3];
971 * Line attribute group (GL_LINE_BIT).
973 struct gl_line_attrib
975 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
976 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
977 GLushort StipplePattern
; /**< Stipple pattern */
978 GLint StippleFactor
; /**< Stipple repeat factor */
979 GLfloat Width
; /**< Line width */
984 * Display list attribute group (GL_LIST_BIT).
986 struct gl_list_attrib
993 * Multisample attribute group (GL_MULTISAMPLE_BIT).
995 struct gl_multisample_attrib
998 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
999 GLboolean SampleAlphaToCoverage
;
1000 GLboolean SampleAlphaToOne
;
1001 GLboolean SampleCoverage
;
1002 GLfloat SampleCoverageValue
;
1003 GLboolean SampleCoverageInvert
;
1008 * A pixelmap (see glPixelMap)
1013 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1014 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1019 * Collection of all pixelmaps
1023 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1024 struct gl_pixelmap GtoG
;
1025 struct gl_pixelmap BtoB
;
1026 struct gl_pixelmap AtoA
;
1027 struct gl_pixelmap ItoR
;
1028 struct gl_pixelmap ItoG
;
1029 struct gl_pixelmap ItoB
;
1030 struct gl_pixelmap ItoA
;
1031 struct gl_pixelmap ItoI
;
1032 struct gl_pixelmap StoS
;
1037 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1039 struct gl_pixel_attrib
1041 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1043 /*--- Begin Pixel Transfer State ---*/
1044 /* Fields are in the order in which they're applied... */
1046 /** Scale & Bias (index shift, offset) */
1048 GLfloat RedBias
, RedScale
;
1049 GLfloat GreenBias
, GreenScale
;
1050 GLfloat BlueBias
, BlueScale
;
1051 GLfloat AlphaBias
, AlphaScale
;
1052 GLfloat DepthBias
, DepthScale
;
1053 GLint IndexShift
, IndexOffset
;
1057 /* Note: actual pixel maps are not part of this attrib group */
1058 GLboolean MapColorFlag
;
1059 GLboolean MapStencilFlag
;
1061 /*--- End Pixel Transfer State ---*/
1064 GLfloat ZoomX
, ZoomY
;
1069 * Point attribute group (GL_POINT_BIT).
1071 struct gl_point_attrib
1073 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1074 GLfloat Size
; /**< User-specified point size */
1075 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1076 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1077 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1078 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1079 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1080 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1081 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1082 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1087 * Polygon attribute group (GL_POLYGON_BIT).
1089 struct gl_polygon_attrib
1091 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1092 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1093 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1094 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1095 GLboolean CullFlag
; /**< Culling on/off flag */
1096 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1097 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1098 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1099 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1100 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1101 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1102 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1103 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1108 * Scissor attributes (GL_SCISSOR_BIT).
1110 struct gl_scissor_attrib
1112 GLboolean Enabled
; /**< Scissor test enabled? */
1113 GLint X
, Y
; /**< Lower left corner of box */
1114 GLsizei Width
, Height
; /**< Size of box */
1119 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1121 * Three sets of stencil data are tracked so that OpenGL 2.0,
1122 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1123 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1124 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1125 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1126 * GL_EXT_stencil_two_side GL_BACK state.
1128 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1129 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1131 * The derived value \c _TestTwoSide is set when the front-face and back-face
1132 * stencil state are different.
1134 struct gl_stencil_attrib
1136 GLboolean Enabled
; /**< Enabled flag */
1137 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1138 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1139 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1140 GLboolean _TestTwoSide
;
1141 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1142 GLenum Function
[3]; /**< Stencil function */
1143 GLenum FailFunc
[3]; /**< Fail function */
1144 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1145 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1146 GLint Ref
[3]; /**< Reference value */
1147 GLuint ValueMask
[3]; /**< Value mask */
1148 GLuint WriteMask
[3]; /**< Write mask */
1149 GLuint Clear
; /**< Clear value */
1154 * An index for each type of texture object. These correspond to the GL
1155 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1156 * Note: the order is from highest priority to lowest priority.
1160 TEXTURE_BUFFER_INDEX
,
1161 TEXTURE_2D_ARRAY_INDEX
,
1162 TEXTURE_1D_ARRAY_INDEX
,
1163 TEXTURE_EXTERNAL_INDEX
,
1174 * Bit flags for each type of texture object
1175 * Used for Texture.Unit[]._ReallyEnabled flags.
1178 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1179 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1180 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1181 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1182 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1183 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1184 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1185 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1186 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1191 * TexGenEnabled flags.
1198 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1203 * Bit flag versions of the corresponding GL_ constants.
1206 #define TEXGEN_SPHERE_MAP 0x1
1207 #define TEXGEN_OBJ_LINEAR 0x2
1208 #define TEXGEN_EYE_LINEAR 0x4
1209 #define TEXGEN_REFLECTION_MAP_NV 0x8
1210 #define TEXGEN_NORMAL_MAP_NV 0x10
1212 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1213 TEXGEN_REFLECTION_MAP_NV | \
1214 TEXGEN_NORMAL_MAP_NV)
1215 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1216 TEXGEN_REFLECTION_MAP_NV | \
1217 TEXGEN_NORMAL_MAP_NV | \
1223 /** Tex-gen enabled for texture unit? */
1224 #define ENABLE_TEXGEN(unit) (1 << (unit))
1226 /** Non-identity texture matrix for texture unit? */
1227 #define ENABLE_TEXMAT(unit) (1 << (unit))
1231 * Texture image state. Drivers will typically create a subclass of this
1232 * with extra fields for memory buffers, etc.
1234 struct gl_texture_image
1236 GLint InternalFormat
; /**< Internal format as given by the user */
1237 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1238 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1239 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1240 * GL_DEPTH_STENCIL_EXT only. Used for
1241 * choosing TexEnv arithmetic.
1243 gl_format TexFormat
; /**< The actual texture memory format */
1245 GLuint Border
; /**< 0 or 1 */
1246 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1247 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1248 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1249 GLuint Width2
; /**< = Width - 2*Border */
1250 GLuint Height2
; /**< = Height - 2*Border */
1251 GLuint Depth2
; /**< = Depth - 2*Border */
1252 GLuint WidthLog2
; /**< = log2(Width2) */
1253 GLuint HeightLog2
; /**< = log2(Height2) */
1254 GLuint DepthLog2
; /**< = log2(Depth2) */
1255 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1257 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1258 GLuint Level
; /**< Which mipmap level am I? */
1259 /** Cube map face: index into gl_texture_object::Image[] array */
1265 * Indexes for cube map faces.
1280 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1281 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1283 struct gl_sampler_object
1288 GLenum WrapS
; /**< S-axis texture image wrap mode */
1289 GLenum WrapT
; /**< T-axis texture image wrap mode */
1290 GLenum WrapR
; /**< R-axis texture image wrap mode */
1291 GLenum MinFilter
; /**< minification filter */
1292 GLenum MagFilter
; /**< magnification filter */
1293 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1294 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1295 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1296 GLfloat LodBias
; /**< OpenGL 1.4 */
1297 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1298 GLenum CompareMode
; /**< GL_ARB_shadow */
1299 GLenum CompareFunc
; /**< GL_ARB_shadow */
1300 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1301 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1302 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1304 /* deprecated sampler state */
1305 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1310 * Texture object state. Contains the array of mipmap images, border color,
1311 * wrap modes, filter modes, and shadow/texcompare state.
1313 struct gl_texture_object
1315 _glthread_Mutex Mutex
; /**< for thread safety */
1316 GLint RefCount
; /**< reference count */
1317 GLuint Name
; /**< the user-visible texture object ID */
1318 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1320 struct gl_sampler_object Sampler
;
1322 GLfloat Priority
; /**< in [0,1] */
1323 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1324 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1325 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1326 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1327 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1328 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1329 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1330 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1331 GLboolean _Complete
; /**< Is texture object complete? */
1332 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1333 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1334 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1336 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1337 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1339 /** GL_ARB_texture_buffer_object */
1340 struct gl_buffer_object
*BufferObject
;
1341 GLenum BufferObjectFormat
;
1343 /** GL_OES_EGL_image_external */
1344 GLint RequiredTextureImageUnits
;
1347 * \name For device driver.
1348 * Note: instead of attaching driver data to this pointer, it's preferable
1349 * to instead use this struct as a base class for your own texture object
1350 * class. Driver->NewTextureObject() can be used to implement the
1353 void *DriverData
; /**< Arbitrary device driver data */
1357 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1358 #define MAX_COMBINER_TERMS 4
1362 * Texture combine environment state.
1364 struct gl_tex_env_combine_state
1366 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1367 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1368 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1369 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1370 GLenum SourceA
[MAX_COMBINER_TERMS
];
1371 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1372 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1373 GLenum OperandA
[MAX_COMBINER_TERMS
];
1374 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1375 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1376 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1377 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1382 * Texture coord generation state.
1386 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1387 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1388 GLfloat ObjectPlane
[4];
1389 GLfloat EyePlane
[4];
1394 * Texture unit state. Contains enable flags, texture environment/function/
1395 * combiners, texgen state, and pointers to current texture objects.
1397 struct gl_texture_unit
1399 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1400 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1402 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1403 GLclampf EnvColor
[4];
1404 GLfloat EnvColorUnclamped
[4];
1406 struct gl_texgen GenS
;
1407 struct gl_texgen GenT
;
1408 struct gl_texgen GenR
;
1409 struct gl_texgen GenQ
;
1410 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1411 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1413 GLfloat LodBias
; /**< for biasing mipmap levels */
1415 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1417 /** Current sampler object (GL_ARB_sampler_objects) */
1418 struct gl_sampler_object
*Sampler
;
1421 * \name GL_EXT_texture_env_combine
1423 struct gl_tex_env_combine_state Combine
;
1426 * Derived state based on \c EnvMode and the \c BaseFormat of the
1427 * currently enabled texture.
1429 struct gl_tex_env_combine_state _EnvMode
;
1432 * Currently enabled combiner state. This will point to either
1433 * \c Combine or \c _EnvMode.
1435 struct gl_tex_env_combine_state
*_CurrentCombine
;
1437 /** Current texture object pointers */
1438 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1440 /** Points to highest priority, complete and enabled texture object */
1441 struct gl_texture_object
*_Current
;
1446 * Texture attribute group (GL_TEXTURE_BIT).
1448 struct gl_texture_attrib
1450 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1451 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1453 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1455 /** GL_ARB_texture_buffer_object */
1456 struct gl_buffer_object
*BufferObject
;
1458 /** GL_ARB_seamless_cubemap */
1459 GLboolean CubeMapSeamless
;
1461 /** Texture units/samplers used by vertex or fragment texturing */
1462 GLbitfield _EnabledUnits
;
1464 /** Texture coord units/sets used for fragment texturing */
1465 GLbitfield _EnabledCoordUnits
;
1467 /** Texture coord units that have texgen enabled */
1468 GLbitfield _TexGenEnabled
;
1470 /** Texture coord units that have non-identity matrices */
1471 GLbitfield _TexMatEnabled
;
1473 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1474 GLbitfield _GenFlags
;
1479 * Data structure representing a single clip plane (e.g. one of the elements
1480 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1482 typedef GLfloat gl_clip_plane
[4];
1486 * Transformation attribute group (GL_TRANSFORM_BIT).
1488 struct gl_transform_attrib
1490 GLenum MatrixMode
; /**< Matrix mode */
1491 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1492 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1493 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1494 GLboolean Normalize
; /**< Normalize all normals? */
1495 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1496 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1497 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1499 GLfloat CullEyePos
[4];
1500 GLfloat CullObjPos
[4];
1505 * Viewport attribute group (GL_VIEWPORT_BIT).
1507 struct gl_viewport_attrib
1509 GLint X
, Y
; /**< position */
1510 GLsizei Width
, Height
; /**< size */
1511 GLfloat Near
, Far
; /**< Depth buffer range */
1512 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1517 * GL_ARB_vertex/pixel_buffer_object buffer object
1519 struct gl_buffer_object
1521 _glthread_Mutex Mutex
;
1524 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1525 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1526 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1527 /** Fields describing a mapped buffer */
1529 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1530 GLvoid
*Pointer
; /**< User-space address of mapping */
1531 GLintptr Offset
; /**< Mapped offset */
1532 GLsizeiptr Length
; /**< Mapped length */
1534 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1535 GLboolean Written
; /**< Ever written to? (for debugging) */
1536 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1541 * Client pixel packing/unpacking attributes
1543 struct gl_pixelstore_attrib
1551 GLboolean SwapBytes
;
1553 GLboolean Invert
; /**< GL_MESA_pack_invert */
1554 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1559 * Client vertex array attributes
1561 struct gl_client_array
1563 GLint Size
; /**< components per element (1,2,3,4) */
1564 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1565 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1566 GLsizei Stride
; /**< user-specified stride */
1567 GLsizei StrideB
; /**< actual stride in bytes */
1568 const GLubyte
*Ptr
; /**< Points to array data */
1569 GLboolean Enabled
; /**< Enabled flag is a boolean */
1570 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1571 GLboolean Integer
; /**< Integer-valued? */
1572 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1573 GLuint _ElementSize
; /**< size of each element in bytes */
1575 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1576 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1581 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1582 * extension, but a nice encapsulation in any case.
1584 struct gl_array_object
1586 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1590 _glthread_Mutex Mutex
;
1591 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1593 /** Conventional vertex arrays */
1595 struct gl_client_array Vertex
;
1596 struct gl_client_array Weight
;
1597 struct gl_client_array Normal
;
1598 struct gl_client_array Color
;
1599 struct gl_client_array SecondaryColor
;
1600 struct gl_client_array FogCoord
;
1601 struct gl_client_array Index
;
1602 struct gl_client_array EdgeFlag
;
1603 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1604 struct gl_client_array PointSize
;
1608 * Generic arrays for vertex programs/shaders.
1609 * For NV vertex programs, these attributes alias and take priority
1610 * over the conventional attribs above. For ARB vertex programs and
1611 * GLSL vertex shaders, these attributes are separate.
1613 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1615 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1616 GLbitfield _Enabled
;
1619 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1620 * we can determine the max legal (in bounds) glDrawElements array index.
1627 * Vertex array state
1629 struct gl_array_attrib
1631 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1632 struct gl_array_object
*ArrayObj
;
1634 /** The default vertex array object */
1635 struct gl_array_object
*DefaultArrayObj
;
1637 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1638 struct _mesa_HashTable
*Objects
;
1640 GLint ActiveTexture
; /**< Client Active Texture */
1641 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1642 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1644 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1645 GLboolean PrimitiveRestart
;
1646 GLuint RestartIndex
;
1648 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1649 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1651 /* GL_ARB_vertex_buffer_object */
1652 struct gl_buffer_object
*ArrayBufferObj
;
1653 struct gl_buffer_object
*ElementArrayBufferObj
;
1658 * Feedback buffer state
1663 GLbitfield _Mask
; /**< FB_* bits */
1671 * Selection buffer state
1675 GLuint
*Buffer
; /**< selection buffer */
1676 GLuint BufferSize
; /**< size of the selection buffer */
1677 GLuint BufferCount
; /**< number of values in the selection buffer */
1678 GLuint Hits
; /**< number of records in the selection buffer */
1679 GLuint NameStackDepth
; /**< name stack depth */
1680 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1681 GLboolean HitFlag
; /**< hit flag */
1682 GLfloat HitMinZ
; /**< minimum hit depth */
1683 GLfloat HitMaxZ
; /**< maximum hit depth */
1688 * 1-D Evaluator control points
1692 GLuint Order
; /**< Number of control points */
1693 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1694 GLfloat
*Points
; /**< Points to contiguous control points */
1699 * 2-D Evaluator control points
1703 GLuint Uorder
; /**< Number of control points in U dimension */
1704 GLuint Vorder
; /**< Number of control points in V dimension */
1707 GLfloat
*Points
; /**< Points to contiguous control points */
1712 * All evaluator control point state
1714 struct gl_evaluators
1720 struct gl_1d_map Map1Vertex3
;
1721 struct gl_1d_map Map1Vertex4
;
1722 struct gl_1d_map Map1Index
;
1723 struct gl_1d_map Map1Color4
;
1724 struct gl_1d_map Map1Normal
;
1725 struct gl_1d_map Map1Texture1
;
1726 struct gl_1d_map Map1Texture2
;
1727 struct gl_1d_map Map1Texture3
;
1728 struct gl_1d_map Map1Texture4
;
1729 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1736 struct gl_2d_map Map2Vertex3
;
1737 struct gl_2d_map Map2Vertex4
;
1738 struct gl_2d_map Map2Index
;
1739 struct gl_2d_map Map2Color4
;
1740 struct gl_2d_map Map2Normal
;
1741 struct gl_2d_map Map2Texture1
;
1742 struct gl_2d_map Map2Texture2
;
1743 struct gl_2d_map Map2Texture3
;
1744 struct gl_2d_map Map2Texture4
;
1745 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1751 * Names of the various vertex/fragment program register files, etc.
1753 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1754 * All values should fit in a 4-bit field.
1756 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1757 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1758 * be "uniform" variables since they can only be set outside glBegin/End.
1759 * They're also all stored in the same Parameters array.
1763 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1764 PROGRAM_INPUT
, /**< machine->Inputs[] */
1765 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1766 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1767 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1768 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1769 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1770 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1771 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1772 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1773 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1774 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1775 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1776 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1777 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1783 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1784 * one of these values.
1788 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1789 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1790 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1791 SYSTEM_VALUE_MAX
/**< Number of values */
1796 * The possible interpolation qualifiers that can be applied to a fragment
1797 * shader input in GLSL.
1799 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1800 * gl_fragment_program data structure to 0 causes the default behavior.
1802 enum glsl_interp_qualifier
1804 INTERP_QUALIFIER_NONE
= 0,
1805 INTERP_QUALIFIER_SMOOTH
,
1806 INTERP_QUALIFIER_FLAT
,
1807 INTERP_QUALIFIER_NOPERSPECTIVE
1811 /** Vertex and fragment instructions */
1812 struct prog_instruction
;
1813 struct gl_program_parameter_list
;
1814 struct gl_uniform_list
;
1816 /** Post-link transform feedback info. */
1817 struct gl_transform_feedback_info
{
1818 unsigned NumOutputs
;
1821 unsigned OutputRegister
;
1822 unsigned OutputBuffer
;
1823 unsigned NumComponents
;
1824 } Outputs
[MAX_PROGRAM_OUTPUTS
];
1828 * Base class for any kind of program object
1833 GLubyte
*String
; /**< Null-terminated program text */
1835 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1836 GLenum Format
; /**< String encoding format */
1839 struct prog_instruction
*Instructions
;
1841 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1842 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1843 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1844 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1845 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1846 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1847 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1848 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1851 /** Named parameters, constants, etc. from program text */
1852 struct gl_program_parameter_list
*Parameters
;
1853 /** Numbered local parameters */
1854 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1856 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1857 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1858 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1859 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1861 /** Bitmask of which register files are read/written with indirect
1862 * addressing. Mask of (1 << PROGRAM_x) bits.
1864 GLbitfield IndirectRegisterFiles
;
1866 /** Logical counts */
1868 GLuint NumInstructions
;
1869 GLuint NumTemporaries
;
1870 GLuint NumParameters
;
1871 GLuint NumAttributes
;
1872 GLuint NumAddressRegs
;
1873 GLuint NumAluInstructions
;
1874 GLuint NumTexInstructions
;
1875 GLuint NumTexIndirections
;
1877 /** Native, actual h/w counts */
1879 GLuint NumNativeInstructions
;
1880 GLuint NumNativeTemporaries
;
1881 GLuint NumNativeParameters
;
1882 GLuint NumNativeAttributes
;
1883 GLuint NumNativeAddressRegs
;
1884 GLuint NumNativeAluInstructions
;
1885 GLuint NumNativeTexInstructions
;
1886 GLuint NumNativeTexIndirections
;
1891 /** Vertex program object */
1892 struct gl_vertex_program
1894 struct gl_program Base
; /**< base class */
1895 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1896 GLboolean IsPositionInvariant
;
1897 GLboolean UsesClipDistance
;
1901 /** Geometry program object */
1902 struct gl_geometry_program
1904 struct gl_program Base
; /**< base class */
1907 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1908 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1909 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1913 /** Fragment program object */
1914 struct gl_fragment_program
1916 struct gl_program Base
; /**< base class */
1917 GLboolean UsesKill
; /**< shader uses KIL instruction */
1918 GLboolean OriginUpperLeft
;
1919 GLboolean PixelCenterInteger
;
1920 enum gl_frag_depth_layout FragDepthLayout
;
1923 * GLSL interpolation qualifier associated with each fragment shader input.
1924 * For inputs that do not have an interpolation qualifier specified in
1925 * GLSL, the value is INTERP_QUALIFIER_NONE.
1927 enum glsl_interp_qualifier InterpQualifier
[FRAG_ATTRIB_MAX
];
1932 * State common to vertex and fragment programs.
1934 struct gl_program_state
1936 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1937 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1942 * Context state for vertex programs.
1944 struct gl_vertex_program_state
1946 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1947 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1948 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1949 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1950 /** Computed two sided lighting for fixed function/programs. */
1951 GLboolean _TwoSideEnabled
;
1952 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1954 /** Currently enabled and valid vertex program (including internal
1955 * programs, user-defined vertex programs and GLSL vertex shaders).
1956 * This is the program we must use when rendering.
1958 struct gl_vertex_program
*_Current
;
1960 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1962 /* For GL_NV_vertex_program only: */
1963 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1964 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1966 /** Should fixed-function T&L be implemented with a vertex prog? */
1967 GLboolean _MaintainTnlProgram
;
1969 /** Program to emulate fixed-function T&L (see above) */
1970 struct gl_vertex_program
*_TnlProgram
;
1972 /** Cache of fixed-function programs */
1973 struct gl_program_cache
*Cache
;
1975 GLboolean _Overriden
;
1980 * Context state for geometry programs.
1982 struct gl_geometry_program_state
1984 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1985 GLboolean _Enabled
; /**< Enabled and valid program? */
1986 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1988 /** Currently enabled and valid program (including internal programs
1989 * and compiled shader programs).
1991 struct gl_geometry_program
*_Current
;
1993 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1995 /** Cache of fixed-function programs */
1996 struct gl_program_cache
*Cache
;
2000 * Context state for fragment programs.
2002 struct gl_fragment_program_state
2004 GLboolean Enabled
; /**< User-set fragment program enable flag */
2005 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2006 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2008 /** Currently enabled and valid fragment program (including internal
2009 * programs, user-defined fragment programs and GLSL fragment shaders).
2010 * This is the program we must use when rendering.
2012 struct gl_fragment_program
*_Current
;
2014 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2016 /** Should fixed-function texturing be implemented with a fragment prog? */
2017 GLboolean _MaintainTexEnvProgram
;
2019 /** Program to emulate fixed-function texture env/combine (see above) */
2020 struct gl_fragment_program
*_TexEnvProgram
;
2022 /** Cache of fixed-function programs */
2023 struct gl_program_cache
*Cache
;
2028 * ATI_fragment_shader runtime state
2030 #define ATI_FS_INPUT_PRIMARY 0
2031 #define ATI_FS_INPUT_SECONDARY 1
2033 struct atifs_instruction
;
2034 struct atifs_setupinst
;
2037 * ATI fragment shader
2039 struct ati_fragment_shader
2043 struct atifs_instruction
*Instructions
[2];
2044 struct atifs_setupinst
*SetupInst
[2];
2045 GLfloat Constants
[8][4];
2046 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2047 GLubyte numArithInstr
[2];
2048 GLubyte regsAssigned
[2];
2049 GLubyte NumPasses
; /**< 1 or 2 */
2051 GLubyte last_optype
;
2052 GLboolean interpinp1
;
2058 * Context state for GL_ATI_fragment_shader
2060 struct gl_ati_fragment_shader_state
2063 GLboolean _Enabled
; /**< enabled and valid shader? */
2064 GLboolean Compiling
;
2065 GLfloat GlobalConstants
[8][4];
2066 struct ati_fragment_shader
*Current
;
2071 * Occlusion/timer query object.
2073 struct gl_query_object
2075 GLenum Target
; /**< The query target, when active */
2076 GLuint Id
; /**< hash table ID/name */
2077 GLuint64EXT Result
; /**< the counter */
2078 GLboolean Active
; /**< inside Begin/EndQuery */
2079 GLboolean Ready
; /**< result is ready? */
2084 * Context state for query objects.
2086 struct gl_query_state
2088 struct _mesa_HashTable
*QueryObjects
;
2089 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2090 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2092 /** GL_NV_conditional_render */
2093 struct gl_query_object
*CondRenderQuery
;
2095 /** GL_EXT_transform_feedback */
2096 struct gl_query_object
*PrimitivesGenerated
;
2097 struct gl_query_object
*PrimitivesWritten
;
2099 /** GL_ARB_timer_query */
2100 struct gl_query_object
*TimeElapsed
;
2102 GLenum CondRenderMode
;
2106 /** Sync object state */
2107 struct gl_sync_object
{
2108 struct simple_node link
;
2109 GLenum Type
; /**< GL_SYNC_FENCE */
2110 GLuint Name
; /**< Fence name */
2111 GLint RefCount
; /**< Reference count */
2112 GLboolean DeletePending
; /**< Object was deleted while there were still
2113 * live references (e.g., sync not yet finished)
2115 GLenum SyncCondition
;
2116 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2117 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2121 /** Set by #pragma directives */
2122 struct gl_sl_pragmas
2124 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2125 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2126 GLboolean Optimize
; /**< defaults on */
2127 GLboolean Debug
; /**< defaults off */
2132 * A GLSL vertex or fragment shader object.
2136 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2137 GLuint Name
; /**< AKA the handle */
2138 GLint RefCount
; /**< Reference count */
2139 GLboolean DeletePending
;
2140 GLboolean CompileStatus
;
2141 const GLchar
*Source
; /**< Source code string */
2142 GLuint SourceChecksum
; /**< for debug/logging purposes */
2143 struct gl_program
*Program
; /**< Post-compile assembly code */
2145 struct gl_sl_pragmas Pragmas
;
2147 unsigned Version
; /**< GLSL version used for linking */
2149 unsigned num_samplers
; /**< Number of samplers used by this shader.
2150 * This field is only set post-linking.
2153 * Number of uniform components used by this shader.
2155 * This field is only set post-linking.
2157 unsigned num_uniform_components
;
2159 struct exec_list
*ir
;
2160 struct glsl_symbol_table
*symbols
;
2162 /** Shaders containing built-in functions that are used for linking. */
2163 struct gl_shader
*builtins_to_link
[16];
2164 unsigned num_builtins_to_link
;
2169 * A GLSL program object.
2170 * Basically a linked collection of vertex and fragment shaders.
2172 struct gl_shader_program
2174 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2175 GLuint Name
; /**< aka handle or ID */
2176 GLint RefCount
; /**< Reference count */
2177 GLboolean DeletePending
;
2180 * Flags that the linker should not reject the program if it lacks
2181 * a vertex or fragment shader. GLES2 doesn't allow separate
2182 * shader objects, and would reject them. However, we internally
2183 * build separate shader objects for fixed function programs, which
2184 * we use for drivers/common/meta.c and for handling
2185 * _mesa_update_state with no program bound (for example in
2188 GLboolean InternalSeparateShader
;
2190 GLuint NumShaders
; /**< number of attached shaders */
2191 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2194 * User-defined attribute bindings
2196 * These are set via \c glBindAttribLocation and are used to direct the
2197 * GLSL linker. These are \b not the values used in the compiled shader,
2198 * and they are \b not the values returned by \c glGetAttribLocation.
2200 struct string_to_uint_map
*AttributeBindings
;
2203 * User-defined fragment data bindings
2205 * These are set via \c glBindFragDataLocation and are used to direct the
2206 * GLSL linker. These are \b not the values used in the compiled shader,
2207 * and they are \b not the values returned by \c glGetFragDataLocation.
2209 struct string_to_uint_map
*FragDataBindings
;
2211 /** Transform feedback varyings */
2215 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2216 } TransformFeedback
;
2218 /** Post-link transform feedback info. */
2219 struct gl_transform_feedback_info LinkedTransformFeedback
;
2221 /** Geometry shader state - copied into gl_geometry_program at link time */
2224 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2225 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2226 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2229 /** Vertex shader state - copied into gl_vertex_program at link time */
2231 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2234 /* post-link info: */
2235 unsigned NumUserUniformStorage
;
2236 struct gl_uniform_storage
*UniformStorage
;
2239 * Map of active uniform names to locations
2241 * Maps any active uniform that is not an array element to a location.
2242 * Each active uniform, including individual structure members will appear
2243 * in this map. This roughly corresponds to the set of names that would be
2244 * enumerated by \c glGetActiveUniform.
2246 struct string_to_uint_map
*UniformHash
;
2249 * Map from sampler unit to texture unit (set by glUniform1i())
2251 * A sampler unit is associated with each sampler uniform by the linker.
2252 * The sampler unit associated with each uniform is stored in the
2253 * \c gl_uniform_storage::sampler field.
2255 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2256 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2257 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2259 struct gl_program_parameter_list
*Varying
;
2260 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2261 GLboolean Validated
;
2262 GLboolean _Used
; /**< Ever used for drawing? */
2265 unsigned Version
; /**< GLSL version used for linking */
2268 * Per-stage shaders resulting from the first stage of linking.
2270 * Set of linked shaders for this program. The array is accessed using the
2271 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2274 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2278 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2279 #define GLSL_LOG 0x2 /**< Write shaders to files */
2280 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2281 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2282 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2283 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2284 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2285 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2289 * Context state for GLSL vertex/fragment shaders.
2291 struct gl_shader_state
2294 * Programs used for rendering
2296 * There is a separate program set for each shader stage. If
2297 * GL_EXT_separate_shader_objects is not supported, each of these must point
2298 * to \c NULL or to the same program.
2300 struct gl_shader_program
*CurrentVertexProgram
;
2301 struct gl_shader_program
*CurrentGeometryProgram
;
2302 struct gl_shader_program
*CurrentFragmentProgram
;
2305 * Program used by glUniform calls.
2307 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2309 struct gl_shader_program
*ActiveProgram
;
2311 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2315 * Compiler options for a single GLSL shaders type
2317 struct gl_shader_compiler_options
2319 /** Driver-selectable options: */
2320 GLboolean EmitCondCodes
; /**< Use condition codes? */
2321 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2322 GLboolean EmitNoLoops
;
2323 GLboolean EmitNoFunctions
;
2324 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2325 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2326 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2327 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2328 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2331 * \name Forms of indirect addressing the driver cannot do.
2334 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2335 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2336 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2337 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2340 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2341 GLuint MaxUnrollIterations
;
2343 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2347 * Transform feedback object state
2349 struct gl_transform_feedback_object
2351 GLuint Name
; /**< AKA the object ID */
2353 GLboolean Active
; /**< Is transform feedback enabled? */
2354 GLboolean Paused
; /**< Is transform feedback paused? */
2356 /** The feedback buffers */
2357 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2358 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2360 /** Start of feedback data in dest buffer */
2361 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2362 /** Max data to put into dest buffer (in bytes) */
2363 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2368 * Context state for transform feedback.
2370 struct gl_transform_feedback
2372 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2374 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2376 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2377 struct gl_buffer_object
*CurrentBuffer
;
2379 /** The table of all transform feedback objects */
2380 struct _mesa_HashTable
*Objects
;
2382 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2383 struct gl_transform_feedback_object
*CurrentObject
;
2385 /** The default xform-fb object (Name==0) */
2386 struct gl_transform_feedback_object
*DefaultObject
;
2392 * State which can be shared by multiple contexts:
2394 struct gl_shared_state
2396 _glthread_Mutex Mutex
; /**< for thread safety */
2397 GLint RefCount
; /**< Reference count */
2398 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2399 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2401 /** Default texture objects (shared by all texture units) */
2402 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2404 /** Fallback texture used when a bound texture is incomplete */
2405 struct gl_texture_object
*FallbackTex
;
2408 * \name Thread safety and statechange notification for texture
2411 * \todo Improve the granularity of locking.
2414 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2415 GLuint TextureStateStamp
; /**< state notification for shared tex */
2418 /** Default buffer object for vertex arrays that aren't in VBOs */
2419 struct gl_buffer_object
*NullBufferObj
;
2422 * \name Vertex/geometry/fragment programs
2425 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2426 struct gl_vertex_program
*DefaultVertexProgram
;
2427 struct gl_fragment_program
*DefaultFragmentProgram
;
2428 struct gl_geometry_program
*DefaultGeometryProgram
;
2431 /* GL_ATI_fragment_shader */
2432 struct _mesa_HashTable
*ATIShaders
;
2433 struct ati_fragment_shader
*DefaultFragmentShader
;
2435 struct _mesa_HashTable
*BufferObjects
;
2437 /** Table of both gl_shader and gl_shader_program objects */
2438 struct _mesa_HashTable
*ShaderObjects
;
2440 /* GL_EXT_framebuffer_object */
2441 struct _mesa_HashTable
*RenderBuffers
;
2442 struct _mesa_HashTable
*FrameBuffers
;
2445 struct simple_node SyncObjects
;
2447 /** GL_ARB_sampler_objects */
2448 struct _mesa_HashTable
*SamplerObjects
;
2450 void *DriverData
; /**< Device driver shared state */
2457 * A renderbuffer stores colors or depth values or stencil values.
2458 * A framebuffer object will have a collection of these.
2459 * Data are read/written to the buffer with a handful of Get/Put functions.
2461 * Instances of this object are allocated with the Driver's NewRenderbuffer
2462 * hook. Drivers will likely wrap this class inside a driver-specific
2463 * class to simulate inheritance.
2465 struct gl_renderbuffer
2467 _glthread_Mutex Mutex
; /**< for thread safety */
2468 GLuint ClassID
; /**< Useful for drivers */
2471 GLuint Width
, Height
;
2472 GLint RowStride
; /**< Padded width in units of pixels */
2473 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2475 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2479 GLenum InternalFormat
; /**< The user-specified format */
2480 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2481 GL_STENCIL_INDEX. */
2482 gl_format Format
; /**< The actual renderbuffer memory format */
2484 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2485 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2487 /* Used to wrap one renderbuffer around another: */
2488 struct gl_renderbuffer
*Wrapped
;
2490 /* Delete this renderbuffer */
2491 void (*Delete
)(struct gl_renderbuffer
*rb
);
2493 /* Allocate new storage for this renderbuffer */
2494 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2495 GLenum internalFormat
,
2496 GLuint width
, GLuint height
);
2498 /* Lock/Unlock are called before/after calling the Get/Put functions.
2499 * Not sure this is the right place for these yet.
2500 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2501 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2504 /* Return a pointer to the element/pixel at (x,y).
2505 * Should return NULL if the buffer memory can't be directly addressed.
2507 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2510 /* Get/Read a row of values.
2511 * The values will be of format _BaseFormat and type DataType.
2513 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2514 GLint x
, GLint y
, void *values
);
2516 /* Get/Read values at arbitrary locations.
2517 * The values will be of format _BaseFormat and type DataType.
2519 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2520 const GLint x
[], const GLint y
[], void *values
);
2522 /* Put/Write a row of values.
2523 * The values will be of format _BaseFormat and type DataType.
2525 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2526 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2528 /* Put/Write a row of RGB values. This is a special-case routine that's
2529 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2530 * a common case for glDrawPixels and some triangle routines.
2531 * The values will be of format GL_RGB and type DataType.
2533 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2534 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2537 /* Put/Write a row of identical values.
2538 * The values will be of format _BaseFormat and type DataType.
2540 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2541 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2543 /* Put/Write values at arbitrary locations.
2544 * The values will be of format _BaseFormat and type DataType.
2546 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2547 const GLint x
[], const GLint y
[], const void *values
,
2548 const GLubyte
*mask
);
2549 /* Put/Write identical values at arbitrary locations.
2550 * The values will be of format _BaseFormat and type DataType.
2552 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2553 GLuint count
, const GLint x
[], const GLint y
[],
2554 const void *value
, const GLubyte
*mask
);
2559 * A renderbuffer attachment points to either a texture object (and specifies
2560 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2562 struct gl_renderbuffer_attachment
2564 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2568 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2569 * application supplied renderbuffer object.
2571 struct gl_renderbuffer
*Renderbuffer
;
2574 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2575 * supplied texture object.
2577 struct gl_texture_object
*Texture
;
2578 GLuint TextureLevel
; /**< Attached mipmap level. */
2579 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2580 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2581 * and 2D array textures */
2586 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2587 * In C++ terms, think of this as a base class from which device drivers
2588 * will make derived classes.
2590 struct gl_framebuffer
2592 _glthread_Mutex Mutex
; /**< for thread safety */
2594 * If zero, this is a window system framebuffer. If non-zero, this
2595 * is a FBO framebuffer; note that for some devices (i.e. those with
2596 * a natural pixel coordinate system for FBOs that differs from the
2597 * OpenGL/Mesa coordinate system), this means that the viewport,
2598 * polygon face orientation, and polygon stipple will have to be inverted.
2603 GLboolean DeletePending
;
2606 * The framebuffer's visual. Immutable if this is a window system buffer.
2607 * Computed from attachments if user-made FBO.
2609 struct gl_config Visual
;
2611 GLboolean Initialized
;
2613 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2615 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2617 GLint _Xmin
, _Xmax
; /**< inclusive */
2618 GLint _Ymin
, _Ymax
; /**< exclusive */
2621 /** \name Derived Z buffer stuff */
2623 GLuint _DepthMax
; /**< Max depth buffer value */
2624 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2625 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2628 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2631 /** Integer color values */
2632 GLboolean _IntegerColor
;
2634 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2635 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2637 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2638 * attribute group and GL_PIXEL attribute group, respectively.
2640 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2641 GLenum ColorReadBuffer
;
2643 /** Computed from ColorDraw/ReadBuffer above */
2644 GLuint _NumColorDrawBuffers
;
2645 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2646 GLint _ColorReadBufferIndex
; /* -1 = None */
2647 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2648 struct gl_renderbuffer
*_ColorReadBuffer
;
2650 /** The Actual depth/stencil buffers to use. May be wrappers around the
2651 * depth/stencil buffers attached above. */
2652 struct gl_renderbuffer
*_DepthBuffer
;
2653 struct gl_renderbuffer
*_StencilBuffer
;
2655 /** Delete this framebuffer */
2656 void (*Delete
)(struct gl_framebuffer
*fb
);
2661 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2665 GLushort RangeMin
; /**< min value exponent */
2666 GLushort RangeMax
; /**< max value exponent */
2667 GLushort Precision
; /**< number of mantissa bits */
2672 * Limits for vertex, geometry and fragment programs/shaders.
2674 struct gl_program_constants
2676 /* logical limits */
2677 GLuint MaxInstructions
;
2678 GLuint MaxAluInstructions
;
2679 GLuint MaxTexInstructions
;
2680 GLuint MaxTexIndirections
;
2683 GLuint MaxAddressRegs
;
2684 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2685 GLuint MaxParameters
;
2686 GLuint MaxLocalParams
;
2687 GLuint MaxEnvParams
;
2688 /* native/hardware limits */
2689 GLuint MaxNativeInstructions
;
2690 GLuint MaxNativeAluInstructions
;
2691 GLuint MaxNativeTexInstructions
;
2692 GLuint MaxNativeTexIndirections
;
2693 GLuint MaxNativeAttribs
;
2694 GLuint MaxNativeTemps
;
2695 GLuint MaxNativeAddressRegs
;
2696 GLuint MaxNativeParameters
;
2698 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2699 /* ES 2.0 and GL_ARB_ES2_compatibility */
2700 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2701 struct gl_precision LowInt
, MediumInt
, HighInt
;
2706 * Constants which may be overridden by device driver during context creation
2707 * but are never changed after that.
2711 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2712 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2713 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2714 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2715 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2716 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2717 GLuint MaxTextureCoordUnits
;
2718 GLuint MaxTextureImageUnits
;
2719 GLuint MaxVertexTextureImageUnits
;
2720 GLuint MaxCombinedTextureImageUnits
;
2721 GLuint MaxGeometryTextureImageUnits
;
2722 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2723 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2724 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2725 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2727 GLuint MaxArrayLockSize
;
2731 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2732 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2733 GLfloat PointSizeGranularity
;
2734 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2735 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2736 GLfloat LineWidthGranularity
;
2738 GLuint MaxColorTableSize
;
2740 GLuint MaxClipPlanes
;
2742 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2743 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2745 GLuint MaxViewportWidth
, MaxViewportHeight
;
2747 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2748 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2749 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2750 GLuint MaxProgramMatrices
;
2751 GLuint MaxProgramMatrixStackDepth
;
2753 /** vertex array / buffer object bounds checking */
2754 GLboolean CheckArrayBounds
;
2756 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2758 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2759 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2760 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2762 /** Number of varying vectors between vertex and fragment shaders */
2764 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2765 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2767 /** GL_ARB_geometry_shader4 */
2768 GLuint MaxGeometryOutputVertices
;
2769 GLuint MaxGeometryTotalOutputComponents
;
2771 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2774 * Does the driver support real 32-bit integers? (Otherwise, integers are
2775 * simulated via floats.)
2777 GLboolean NativeIntegers
;
2780 * If the driver supports real 32-bit integers, what integer value should be
2781 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2783 GLuint UniformBooleanTrue
;
2785 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2786 GLbitfield SupportedBumpUnits
;
2789 * Maximum amount of time, measured in nanseconds, that the server can wait.
2791 GLuint64 MaxServerWaitTimeout
;
2793 /** GL_EXT_provoking_vertex */
2794 GLboolean QuadsFollowProvokingVertexConvention
;
2796 /** OpenGL version 3.0 */
2797 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2799 /** OpenGL version 3.2 */
2800 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2802 /** GL_EXT_transform_feedback */
2803 GLuint MaxTransformFeedbackSeparateAttribs
;
2804 GLuint MaxTransformFeedbackSeparateComponents
;
2805 GLuint MaxTransformFeedbackInterleavedComponents
;
2807 /** GL_EXT_gpu_shader4 */
2808 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2810 /* GL_EXT_framebuffer_sRGB */
2811 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2813 /* GL_ARB_robustness */
2814 GLenum ResetStrategy
;
2817 * Whether the implementation strips out and ignores texture borders.
2819 * Many GPU hardware implementations don't support rendering with texture
2820 * borders and mipmapped textures. (Note: not static border color, but the
2821 * old 1-pixel border around each edge). Implementations then have to do
2822 * slow fallbacks to be correct, or just ignore the border and be fast but
2823 * wrong. Setting the flag stripts the border off of TexImage calls,
2824 * providing "fast but wrong" at significantly reduced driver complexity.
2826 * Texture borders are deprecated in GL 3.0.
2828 GLboolean StripTextureBorder
;
2833 * Enable flag for each OpenGL extension. Different device drivers will
2834 * enable different extensions at runtime.
2836 struct gl_extensions
2838 GLboolean dummy
; /* don't remove this! */
2839 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2840 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2841 GLboolean ARB_ES2_compatibility
;
2842 GLboolean ARB_blend_func_extended
;
2843 GLboolean ARB_color_buffer_float
;
2844 GLboolean ARB_copy_buffer
;
2845 GLboolean ARB_depth_buffer_float
;
2846 GLboolean ARB_depth_clamp
;
2847 GLboolean ARB_depth_texture
;
2848 GLboolean ARB_draw_buffers_blend
;
2849 GLboolean ARB_draw_elements_base_vertex
;
2850 GLboolean ARB_draw_instanced
;
2851 GLboolean ARB_fragment_coord_conventions
;
2852 GLboolean ARB_fragment_program
;
2853 GLboolean ARB_fragment_program_shadow
;
2854 GLboolean ARB_fragment_shader
;
2855 GLboolean ARB_framebuffer_object
;
2856 GLboolean ARB_explicit_attrib_location
;
2857 GLboolean ARB_geometry_shader4
;
2858 GLboolean ARB_half_float_pixel
;
2859 GLboolean ARB_half_float_vertex
;
2860 GLboolean ARB_instanced_arrays
;
2861 GLboolean ARB_map_buffer_range
;
2862 GLboolean ARB_occlusion_query
;
2863 GLboolean ARB_occlusion_query2
;
2864 GLboolean ARB_point_sprite
;
2865 GLboolean ARB_sampler_objects
;
2866 GLboolean ARB_seamless_cube_map
;
2867 GLboolean ARB_shader_objects
;
2868 GLboolean ARB_shader_stencil_export
;
2869 GLboolean ARB_shader_texture_lod
;
2870 GLboolean ARB_shading_language_100
;
2871 GLboolean ARB_shadow
;
2872 GLboolean ARB_shadow_ambient
;
2874 GLboolean ARB_texture_border_clamp
;
2875 GLboolean ARB_texture_buffer_object
;
2876 GLboolean ARB_texture_compression_rgtc
;
2877 GLboolean ARB_texture_cube_map
;
2878 GLboolean ARB_texture_env_combine
;
2879 GLboolean ARB_texture_env_crossbar
;
2880 GLboolean ARB_texture_env_dot3
;
2881 GLboolean ARB_texture_float
;
2882 GLboolean ARB_texture_multisample
;
2883 GLboolean ARB_texture_non_power_of_two
;
2884 GLboolean ARB_texture_rg
;
2885 GLboolean ARB_texture_rgb10_a2ui
;
2886 GLboolean ARB_texture_storage
;
2887 GLboolean ARB_timer_query
;
2888 GLboolean ARB_transform_feedback2
;
2889 GLboolean ARB_transpose_matrix
;
2890 GLboolean ARB_uniform_buffer_object
;
2891 GLboolean ARB_vertex_array_object
;
2892 GLboolean ARB_vertex_program
;
2893 GLboolean ARB_vertex_shader
;
2894 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2895 GLboolean ARB_window_pos
;
2896 GLboolean EXT_blend_color
;
2897 GLboolean EXT_blend_equation_separate
;
2898 GLboolean EXT_blend_func_separate
;
2899 GLboolean EXT_blend_minmax
;
2900 GLboolean EXT_clip_volume_hint
;
2901 GLboolean EXT_compiled_vertex_array
;
2902 GLboolean EXT_depth_bounds_test
;
2903 GLboolean EXT_draw_buffers2
;
2904 GLboolean EXT_draw_range_elements
;
2905 GLboolean EXT_fog_coord
;
2906 GLboolean EXT_framebuffer_blit
;
2907 GLboolean EXT_framebuffer_multisample
;
2908 GLboolean EXT_framebuffer_object
;
2909 GLboolean EXT_framebuffer_sRGB
;
2910 GLboolean EXT_gpu_program_parameters
;
2911 GLboolean EXT_gpu_shader4
;
2912 GLboolean EXT_packed_depth_stencil
;
2913 GLboolean EXT_packed_float
;
2914 GLboolean EXT_packed_pixels
;
2915 GLboolean EXT_pixel_buffer_object
;
2916 GLboolean EXT_point_parameters
;
2917 GLboolean EXT_provoking_vertex
;
2918 GLboolean EXT_rescale_normal
;
2919 GLboolean EXT_shadow_funcs
;
2920 GLboolean EXT_secondary_color
;
2921 GLboolean EXT_separate_shader_objects
;
2922 GLboolean EXT_separate_specular_color
;
2923 GLboolean EXT_stencil_two_side
;
2924 GLboolean EXT_texture3D
;
2925 GLboolean EXT_texture_array
;
2926 GLboolean EXT_texture_compression_latc
;
2927 GLboolean EXT_texture_compression_s3tc
;
2928 GLboolean EXT_texture_env_dot3
;
2929 GLboolean EXT_texture_filter_anisotropic
;
2930 GLboolean EXT_texture_integer
;
2931 GLboolean EXT_texture_mirror_clamp
;
2932 GLboolean EXT_texture_shared_exponent
;
2933 GLboolean EXT_texture_snorm
;
2934 GLboolean EXT_texture_sRGB
;
2935 GLboolean EXT_texture_sRGB_decode
;
2936 GLboolean EXT_texture_swizzle
;
2937 GLboolean EXT_transform_feedback
;
2938 GLboolean EXT_timer_query
;
2939 GLboolean EXT_vertex_array_bgra
;
2940 GLboolean OES_standard_derivatives
;
2941 /* vendor extensions */
2942 GLboolean AMD_conservative_depth
;
2943 GLboolean AMD_seamless_cubemap_per_texture
;
2944 GLboolean APPLE_packed_pixels
;
2945 GLboolean APPLE_vertex_array_object
;
2946 GLboolean APPLE_object_purgeable
;
2947 GLboolean ATI_envmap_bumpmap
;
2948 GLboolean ATI_texture_compression_3dc
;
2949 GLboolean ATI_texture_mirror_once
;
2950 GLboolean ATI_texture_env_combine3
;
2951 GLboolean ATI_fragment_shader
;
2952 GLboolean ATI_separate_stencil
;
2953 GLboolean IBM_rasterpos_clip
;
2954 GLboolean IBM_multimode_draw_arrays
;
2955 GLboolean MESA_pack_invert
;
2956 GLboolean MESA_resize_buffers
;
2957 GLboolean MESA_ycbcr_texture
;
2958 GLboolean MESA_texture_array
;
2959 GLboolean NV_blend_square
;
2960 GLboolean NV_conditional_render
;
2961 GLboolean NV_fog_distance
;
2962 GLboolean NV_fragment_program
;
2963 GLboolean NV_fragment_program_option
;
2964 GLboolean NV_light_max_exponent
;
2965 GLboolean NV_point_sprite
;
2966 GLboolean NV_primitive_restart
;
2967 GLboolean NV_texture_barrier
;
2968 GLboolean NV_texgen_reflection
;
2969 GLboolean NV_texture_env_combine4
;
2970 GLboolean NV_texture_rectangle
;
2971 GLboolean NV_vertex_program
;
2972 GLboolean NV_vertex_program1_1
;
2973 GLboolean SGIS_texture_lod
;
2974 GLboolean TDFX_texture_compression_FXT1
;
2976 GLboolean OES_EGL_image
;
2977 GLboolean OES_draw_texture
;
2978 GLboolean OES_EGL_image_external
;
2979 GLboolean extension_sentinel
;
2980 /** The extension string */
2981 const GLubyte
*String
;
2982 /** Number of supported extensions */
2988 * A stack of matrices (projection, modelview, color, texture, etc).
2990 struct gl_matrix_stack
2992 GLmatrix
*Top
; /**< points into Stack */
2993 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2994 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2995 GLuint MaxDepth
; /**< size of Stack[] array */
2996 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3001 * \name Bits for image transfer operations
3002 * \sa __struct gl_contextRec::ImageTransferState.
3005 #define IMAGE_SCALE_BIAS_BIT 0x1
3006 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3007 #define IMAGE_MAP_COLOR_BIT 0x4
3008 #define IMAGE_CLAMP_BIT 0x800
3011 /** Pixel Transfer ops */
3012 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3013 IMAGE_SHIFT_OFFSET_BIT | \
3014 IMAGE_MAP_COLOR_BIT)
3017 * \name Bits to indicate what state has changed.
3020 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3021 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3022 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3023 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3024 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3025 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3026 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3027 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3028 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3029 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3030 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3031 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3032 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3033 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3034 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3035 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3036 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3037 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3038 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3039 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
3040 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3041 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3042 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3043 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3044 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3045 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3046 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3047 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3048 #define _NEW_BUFFER_OBJECT (1 << 28)
3049 #define _NEW_FRAG_CLAMP (1 << 29)
3055 * \name Bits to track array state changes
3057 * Also used to summarize array enabled.
3060 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
3061 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
3062 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
3063 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
3064 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
3065 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
3066 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
3067 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
3068 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
3069 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
3070 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
3071 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
3072 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
3073 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
3074 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
3075 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
3076 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
3077 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
3078 #define _NEW_ARRAY_ALL 0xffffffff
3081 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
3082 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
3088 * \name A bunch of flags that we think might be useful to drivers.
3090 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3093 #define DD_FLATSHADE 0x1
3094 #define DD_SEPARATE_SPECULAR 0x2
3095 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3096 #define DD_TRI_LIGHT_TWOSIDE 0x8
3097 #define DD_TRI_UNFILLED 0x10
3098 #define DD_TRI_SMOOTH 0x20
3099 #define DD_TRI_STIPPLE 0x40
3100 #define DD_TRI_OFFSET 0x80
3101 #define DD_LINE_SMOOTH 0x100
3102 #define DD_LINE_STIPPLE 0x200
3103 #define DD_POINT_SMOOTH 0x400
3104 #define DD_POINT_ATTEN 0x800
3105 #define DD_TRI_TWOSTENCIL 0x1000
3110 * \name Define the state changes under which each of these bits might change
3113 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3114 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3115 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3116 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3117 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3118 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3119 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3120 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3121 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3122 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3123 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3124 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3125 #define _DD_NEW_POINT_SIZE _NEW_POINT
3126 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3131 * Composite state flags
3134 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3144 /* This has to be included here. */
3149 * Display list flags.
3150 * Strictly this is a tnl-private concept, but it doesn't seem
3151 * worthwhile adding a tnl private structure just to hold this one bit
3154 #define DLIST_DANGLING_REFS 0x1
3157 /** Opaque declaration of display list payload data type */
3158 union gl_dlist_node
;
3162 * Provide a location where information about a display list can be
3163 * collected. Could be extended with driverPrivate structures,
3164 * etc. in the future.
3166 struct gl_display_list
3169 GLbitfield Flags
; /**< DLIST_x flags */
3170 /** The dlist commands are in a linked list of nodes */
3171 union gl_dlist_node
*Head
;
3176 * State used during display list compilation and execution.
3178 struct gl_dlist_state
3180 GLuint CallDepth
; /**< Current recursion calling depth */
3182 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3183 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3184 GLuint CurrentPos
; /**< Index into current block of nodes */
3186 GLvertexformat ListVtxfmt
;
3188 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3189 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3191 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3192 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3194 GLubyte ActiveIndex
;
3195 GLfloat CurrentIndex
;
3197 GLubyte ActiveEdgeFlag
;
3198 GLboolean CurrentEdgeFlag
;
3201 /* State known to have been set by the currently-compiling display
3202 * list. Used to eliminate some redundant state changes.
3210 * Enum for the OpenGL APIs we know about and may support.
3221 * Mesa rendering context.
3223 * This is the central context data structure for Mesa. Almost all
3224 * OpenGL state is contained in this structure.
3225 * Think of this as a base class from which device drivers will derive
3228 * The struct gl_context typedef names this structure.
3232 /** State possibly shared with other contexts in the address space */
3233 struct gl_shared_state
*Shared
;
3235 /** \name API function pointer tables */
3238 struct _glapi_table
*Save
; /**< Display list save functions */
3239 struct _glapi_table
*Exec
; /**< Execute functions */
3240 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3243 struct gl_config Visual
;
3244 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3245 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3246 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3247 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3250 * Device driver function pointer table
3252 struct dd_function_table Driver
;
3254 void *DriverCtx
; /**< Points to device driver context/state */
3256 /** Core/Driver constants */
3257 struct gl_constants Const
;
3259 /** \name The various 4x4 matrix stacks */
3261 struct gl_matrix_stack ModelviewMatrixStack
;
3262 struct gl_matrix_stack ProjectionMatrixStack
;
3263 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3264 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3265 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3268 /** Combined modelview and projection matrix */
3269 GLmatrix _ModelProjectMatrix
;
3271 /** \name Display lists */
3272 struct gl_dlist_state ListState
;
3274 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3275 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3277 /** Extension information */
3278 struct gl_extensions Extensions
;
3281 GLuint VersionMajor
, VersionMinor
;
3282 char *VersionString
;
3284 /** \name State attribute stack (for glPush/PopAttrib) */
3286 GLuint AttribStackDepth
;
3287 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3290 /** \name Renderer attribute groups
3292 * We define a struct for each attribute group to make pushing and popping
3293 * attributes easy. Also it's a good organization.
3296 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3297 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3298 struct gl_current_attrib Current
; /**< Current attributes */
3299 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3300 struct gl_eval_attrib Eval
; /**< Eval attributes */
3301 struct gl_fog_attrib Fog
; /**< Fog attributes */
3302 struct gl_hint_attrib Hint
; /**< Hint attributes */
3303 struct gl_light_attrib Light
; /**< Light attributes */
3304 struct gl_line_attrib Line
; /**< Line attributes */
3305 struct gl_list_attrib List
; /**< List attributes */
3306 struct gl_multisample_attrib Multisample
;
3307 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3308 struct gl_point_attrib Point
; /**< Point attributes */
3309 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3310 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3311 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3312 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3313 struct gl_texture_attrib Texture
; /**< Texture attributes */
3314 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3315 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3318 /** \name Client attribute stack */
3320 GLuint ClientAttribStackDepth
;
3321 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3324 /** \name Client attribute groups */
3326 struct gl_array_attrib Array
; /**< Vertex arrays */
3327 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3328 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3329 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3332 /** \name Other assorted state (not pushed/popped on attribute stack) */
3334 struct gl_pixelmaps PixelMaps
;
3336 struct gl_evaluators EvalMap
; /**< All evaluators */
3337 struct gl_feedback Feedback
; /**< Feedback */
3338 struct gl_selection Select
; /**< Selection */
3340 struct gl_program_state Program
; /**< general program state */
3341 struct gl_vertex_program_state VertexProgram
;
3342 struct gl_fragment_program_state FragmentProgram
;
3343 struct gl_geometry_program_state GeometryProgram
;
3344 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3346 struct gl_shader_state Shader
; /**< GLSL shader object state */
3347 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3349 struct gl_query_state Query
; /**< occlusion, timer queries */
3351 struct gl_transform_feedback TransformFeedback
;
3353 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3354 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3357 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3359 /* GL_EXT_framebuffer_object */
3360 struct gl_renderbuffer
*CurrentRenderbuffer
;
3362 GLenum ErrorValue
; /**< Last error code */
3364 /* GL_ARB_robustness */
3368 * Recognize and silence repeated error debug messages in buggy apps.
3370 const char *ErrorDebugFmtString
;
3371 GLuint ErrorDebugCount
;
3373 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3374 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3376 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3378 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3380 /** \name Derived state */
3382 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3383 * state validation so they need to always be current.
3385 GLbitfield _TriangleCaps
;
3386 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3387 GLfloat _EyeZDir
[3];
3388 GLfloat _ModelViewInvScale
;
3389 GLboolean _NeedEyeCoords
;
3390 GLboolean _ForceEyeCoords
;
3392 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3394 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3395 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3398 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3400 /** \name For debugging/development only */
3402 GLboolean FirstTimeCurrent
;
3405 /** software compression/decompression supported or not */
3406 GLboolean Mesa_DXTn
;
3408 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3411 * Use dp4 (rather than mul/mad) instructions for position
3414 GLboolean mvp_with_dp4
;
3417 * \name Hooks for module contexts.
3419 * These will eventually live in the driver or elsewhere.
3422 void *swrast_context
;
3423 void *swsetup_context
;
3424 void *swtnl_context
;
3426 struct st_context
*st
;
3433 extern int MESA_VERBOSE
;
3434 extern int MESA_DEBUG_FLAGS
;
3435 # define MESA_FUNCTION __FUNCTION__
3437 # define MESA_VERBOSE 0
3438 # define MESA_DEBUG_FLAGS 0
3439 # define MESA_FUNCTION "a function"
3446 /** The MESA_VERBOSE var is a bitmask of these flags */
3449 VERBOSE_VARRAY
= 0x0001,
3450 VERBOSE_TEXTURE
= 0x0002,
3451 VERBOSE_MATERIAL
= 0x0004,
3452 VERBOSE_PIPELINE
= 0x0008,
3453 VERBOSE_DRIVER
= 0x0010,
3454 VERBOSE_STATE
= 0x0020,
3455 VERBOSE_API
= 0x0040,
3456 VERBOSE_DISPLAY_LIST
= 0x0100,
3457 VERBOSE_LIGHTING
= 0x0200,
3458 VERBOSE_PRIMS
= 0x0400,
3459 VERBOSE_VERTS
= 0x0800,
3460 VERBOSE_DISASSEM
= 0x1000,
3461 VERBOSE_DRAW
= 0x2000,
3462 VERBOSE_SWAPBUFFERS
= 0x4000
3466 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3469 DEBUG_ALWAYS_FLUSH
= 0x1
3478 #endif /* MTYPES_H */