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 */
44 /* Shader stages. Note that these will become 5 with tessellation.
45 * These MUST have the same values as PIPE_SHADER_*
47 #define MESA_SHADER_VERTEX 0
48 #define MESA_SHADER_FRAGMENT 1
49 #define MESA_SHADER_GEOMETRY 2
50 #define MESA_SHADER_TYPES 3
54 * Color channel data type.
57 typedef GLubyte GLchan
;
59 #define CHAN_MAXF 255.0F
60 #define CHAN_TYPE GL_UNSIGNED_BYTE
62 typedef GLushort GLchan
;
63 #define CHAN_MAX 65535
64 #define CHAN_MAXF 65535.0F
65 #define CHAN_TYPE GL_UNSIGNED_SHORT
67 typedef GLfloat GLchan
;
69 #define CHAN_MAXF 1.0F
70 #define CHAN_TYPE GL_FLOAT
72 #error "illegal number of color channel bits"
77 * Stencil buffer data type.
80 typedef GLubyte GLstencil
;
81 #elif STENCIL_BITS==16
82 typedef GLushort GLstencil
;
84 # error "illegal number of stencil bits"
89 * \name 64-bit extension of GLbitfield.
92 typedef GLuint64 GLbitfield64
;
94 #define BITFIELD64_ONE 1ULL
95 #define BITFIELD64_ALLONES ~0ULL
97 /** Set a single bit */
98 #define BITFIELD64_BIT(b) (BITFIELD64_ONE << (b))
100 /** Set a mask of the least significant \c b bits */
101 #define BITFIELD64_MASK(b) (((b) >= 64) ? BITFIELD64_ALLONES : \
102 (BITFIELD64_BIT(b) - 1))
105 * Set all bits from l (low bit) to h (high bit), inclusive.
107 * \note \C BITFIELD_64_RANGE(0, 63) return 64 set bits.
109 #define BITFIELD64_RANGE(l, h) (BITFIELD64_MASK((h) + 1) & ~BITFIELD64_MASK(l))
114 * \name Some forward type declarations
117 struct _mesa_HashTable
;
118 struct gl_attrib_node
;
119 struct gl_list_extensions
;
120 struct gl_meta_state
;
121 struct gl_pixelstore_attrib
;
122 struct gl_program_cache
;
123 struct gl_texture_format
;
124 struct gl_texture_image
;
125 struct gl_texture_object
;
133 * Indexes for vertex program attributes.
134 * GL_NV_vertex_program aliases generic attributes over the conventional
135 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
136 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
137 * generic attributes are distinct/separate).
142 VERT_ATTRIB_WEIGHT
= 1,
143 VERT_ATTRIB_NORMAL
= 2,
144 VERT_ATTRIB_COLOR0
= 3,
145 VERT_ATTRIB_COLOR1
= 4,
147 VERT_ATTRIB_COLOR_INDEX
= 6,
148 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
149 VERT_ATTRIB_EDGEFLAG
= 7,
150 VERT_ATTRIB_TEX0
= 8,
151 VERT_ATTRIB_TEX1
= 9,
152 VERT_ATTRIB_TEX2
= 10,
153 VERT_ATTRIB_TEX3
= 11,
154 VERT_ATTRIB_TEX4
= 12,
155 VERT_ATTRIB_TEX5
= 13,
156 VERT_ATTRIB_TEX6
= 14,
157 VERT_ATTRIB_TEX7
= 15,
158 VERT_ATTRIB_GENERIC0
= 16,
159 VERT_ATTRIB_GENERIC1
= 17,
160 VERT_ATTRIB_GENERIC2
= 18,
161 VERT_ATTRIB_GENERIC3
= 19,
162 VERT_ATTRIB_GENERIC4
= 20,
163 VERT_ATTRIB_GENERIC5
= 21,
164 VERT_ATTRIB_GENERIC6
= 22,
165 VERT_ATTRIB_GENERIC7
= 23,
166 VERT_ATTRIB_GENERIC8
= 24,
167 VERT_ATTRIB_GENERIC9
= 25,
168 VERT_ATTRIB_GENERIC10
= 26,
169 VERT_ATTRIB_GENERIC11
= 27,
170 VERT_ATTRIB_GENERIC12
= 28,
171 VERT_ATTRIB_GENERIC13
= 29,
172 VERT_ATTRIB_GENERIC14
= 30,
173 VERT_ATTRIB_GENERIC15
= 31,
178 * Bitflags for vertex attributes.
179 * These are used in bitfields in many places.
182 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
183 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
184 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
185 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
186 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
187 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
188 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
189 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
190 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
191 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
192 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
193 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
194 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
195 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
196 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
197 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
198 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
199 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
200 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
201 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
202 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
203 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
204 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
205 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
206 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
207 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
208 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
209 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
210 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
211 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
212 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
213 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
215 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
216 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
221 * Indexes for vertex program result attributes
225 VERT_RESULT_HPOS
= 0,
226 VERT_RESULT_COL0
= 1,
227 VERT_RESULT_COL1
= 2,
228 VERT_RESULT_FOGC
= 3,
229 VERT_RESULT_TEX0
= 4,
230 VERT_RESULT_TEX1
= 5,
231 VERT_RESULT_TEX2
= 6,
232 VERT_RESULT_TEX3
= 7,
233 VERT_RESULT_TEX4
= 8,
234 VERT_RESULT_TEX5
= 9,
235 VERT_RESULT_TEX6
= 10,
236 VERT_RESULT_TEX7
= 11,
237 VERT_RESULT_PSIZ
= 12,
238 VERT_RESULT_BFC0
= 13,
239 VERT_RESULT_BFC1
= 14,
240 VERT_RESULT_EDGE
= 15,
241 VERT_RESULT_VAR0
= 16, /**< shader varying */
242 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
246 /*********************************************/
249 * Indexes for geometry program attributes.
253 GEOM_ATTRIB_POSITION
= 0,
254 GEOM_ATTRIB_COLOR0
= 1,
255 GEOM_ATTRIB_COLOR1
= 2,
256 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
257 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
258 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
259 GEOM_ATTRIB_POINT_SIZE
= 6,
260 GEOM_ATTRIB_CLIP_VERTEX
= 7,
261 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
262 GEOM_ATTRIB_TEX_COORD
= 9,
264 GEOM_ATTRIB_VAR0
= 16,
265 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
269 * Bitflags for geometry attributes.
270 * These are used in bitfields in many places.
273 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
274 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
275 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
276 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
277 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
278 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
279 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
280 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
281 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
282 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
283 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
285 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
290 * Indexes for geometry program result attributes
295 GEOM_RESULT_COL0
= 1,
296 GEOM_RESULT_COL1
= 2,
297 GEOM_RESULT_SCOL0
= 3,
298 GEOM_RESULT_SCOL1
= 4,
299 GEOM_RESULT_FOGC
= 5,
300 GEOM_RESULT_TEX0
= 6,
301 GEOM_RESULT_TEX1
= 7,
302 GEOM_RESULT_TEX2
= 8,
303 GEOM_RESULT_TEX3
= 9,
304 GEOM_RESULT_TEX4
= 10,
305 GEOM_RESULT_TEX5
= 11,
306 GEOM_RESULT_TEX6
= 12,
307 GEOM_RESULT_TEX7
= 13,
308 GEOM_RESULT_PSIZ
= 14,
309 GEOM_RESULT_CLPV
= 15,
310 GEOM_RESULT_PRID
= 16,
311 GEOM_RESULT_LAYR
= 17,
312 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
313 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
314 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
319 * Indexes for fragment program input attributes.
323 FRAG_ATTRIB_WPOS
= 0,
324 FRAG_ATTRIB_COL0
= 1,
325 FRAG_ATTRIB_COL1
= 2,
326 FRAG_ATTRIB_FOGC
= 3,
327 FRAG_ATTRIB_TEX0
= 4,
328 FRAG_ATTRIB_TEX1
= 5,
329 FRAG_ATTRIB_TEX2
= 6,
330 FRAG_ATTRIB_TEX3
= 7,
331 FRAG_ATTRIB_TEX4
= 8,
332 FRAG_ATTRIB_TEX5
= 9,
333 FRAG_ATTRIB_TEX6
= 10,
334 FRAG_ATTRIB_TEX7
= 11,
335 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
336 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
337 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
338 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
342 * Bitflags for fragment program input attributes.
345 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
346 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
347 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
348 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
349 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
350 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
351 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
352 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
353 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
354 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
355 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
356 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
357 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
358 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
359 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
361 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
362 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
364 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
376 * Fragment program results
380 FRAG_RESULT_DEPTH
= 0,
381 FRAG_RESULT_STENCIL
= 1,
382 FRAG_RESULT_COLOR
= 2,
383 FRAG_RESULT_DATA0
= 3,
384 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
389 * Indexes for all renderbuffers
393 /* the four standard color buffers */
401 /* optional aux buffer */
403 /* generic renderbuffers */
416 * Bit flags for all renderbuffers
418 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
419 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
420 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
421 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
422 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
423 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
424 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
425 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
426 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
427 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
428 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
429 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
430 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
431 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
432 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
433 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
434 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
435 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
436 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
439 * Mask of all the color buffer bits (but not accum).
441 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
442 BUFFER_BIT_BACK_LEFT | \
443 BUFFER_BIT_FRONT_RIGHT | \
444 BUFFER_BIT_BACK_RIGHT | \
446 BUFFER_BIT_COLOR0 | \
447 BUFFER_BIT_COLOR1 | \
448 BUFFER_BIT_COLOR2 | \
449 BUFFER_BIT_COLOR3 | \
450 BUFFER_BIT_COLOR4 | \
451 BUFFER_BIT_COLOR5 | \
452 BUFFER_BIT_COLOR6 | \
457 * Framebuffer configuration (aka visual / pixelformat)
458 * Note: some of these fields should be boolean, but it appears that
459 * code in drivers/dri/common/util.c requires int-sized fields.
465 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
466 GLuint doubleBufferMode
;
469 GLboolean haveAccumBuffer
;
470 GLboolean haveDepthBuffer
;
471 GLboolean haveStencilBuffer
;
473 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
474 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
475 GLint rgbBits
; /* total bits for rgb */
476 GLint indexBits
; /* total bits for colorindex */
478 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
486 /* EXT_visual_rating / GLX 1.2 */
489 /* EXT_visual_info / GLX 1.2 */
490 GLint transparentPixel
;
491 /* colors are floats scaled to ints */
492 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
493 GLint transparentIndex
;
495 /* ARB_multisample / SGIS_multisample */
499 /* SGIX_pbuffer / GLX 1.3 */
500 GLint maxPbufferWidth
;
501 GLint maxPbufferHeight
;
502 GLint maxPbufferPixels
;
503 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
504 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
506 /* OML_swap_method */
509 /* EXT_texture_from_pixmap */
510 GLint bindToTextureRgb
;
511 GLint bindToTextureRgba
;
512 GLint bindToMipmapTexture
;
513 GLint bindToTextureTargets
;
519 * Data structure for color tables
521 struct gl_color_table
523 GLenum InternalFormat
; /**< The user-specified format */
524 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
525 GLuint Size
; /**< number of entries in table */
526 GLfloat
*TableF
; /**< Color table, floating point values */
527 GLubyte
*TableUB
; /**< Color table, ubyte values */
532 GLubyte LuminanceSize
;
533 GLubyte IntensitySize
;
538 * \name Bit flags used for updating material values.
541 #define MAT_ATTRIB_FRONT_AMBIENT 0
542 #define MAT_ATTRIB_BACK_AMBIENT 1
543 #define MAT_ATTRIB_FRONT_DIFFUSE 2
544 #define MAT_ATTRIB_BACK_DIFFUSE 3
545 #define MAT_ATTRIB_FRONT_SPECULAR 4
546 #define MAT_ATTRIB_BACK_SPECULAR 5
547 #define MAT_ATTRIB_FRONT_EMISSION 6
548 #define MAT_ATTRIB_BACK_EMISSION 7
549 #define MAT_ATTRIB_FRONT_SHININESS 8
550 #define MAT_ATTRIB_BACK_SHININESS 9
551 #define MAT_ATTRIB_FRONT_INDEXES 10
552 #define MAT_ATTRIB_BACK_INDEXES 11
553 #define MAT_ATTRIB_MAX 12
555 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
556 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
557 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
558 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
559 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
560 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
562 #define MAT_INDEX_AMBIENT 0
563 #define MAT_INDEX_DIFFUSE 1
564 #define MAT_INDEX_SPECULAR 2
566 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
567 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
568 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
569 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
570 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
571 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
572 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
573 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
574 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
575 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
576 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
577 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
580 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
581 MAT_BIT_FRONT_AMBIENT | \
582 MAT_BIT_FRONT_DIFFUSE | \
583 MAT_BIT_FRONT_SPECULAR | \
584 MAT_BIT_FRONT_SHININESS | \
585 MAT_BIT_FRONT_INDEXES)
587 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
588 MAT_BIT_BACK_AMBIENT | \
589 MAT_BIT_BACK_DIFFUSE | \
590 MAT_BIT_BACK_SPECULAR | \
591 MAT_BIT_BACK_SHININESS | \
592 MAT_BIT_BACK_INDEXES)
594 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
598 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
599 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
602 * Material shininess lookup table.
606 struct gl_shine_tab
*next
, *prev
;
607 GLfloat tab
[SHINE_TABLE_SIZE
+1];
614 * Light source state.
618 struct gl_light
*next
; /**< double linked list with sentinel */
619 struct gl_light
*prev
;
621 GLfloat Ambient
[4]; /**< ambient color */
622 GLfloat Diffuse
[4]; /**< diffuse color */
623 GLfloat Specular
[4]; /**< specular color */
624 GLfloat EyePosition
[4]; /**< position in eye coordinates */
625 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
626 GLfloat SpotExponent
;
627 GLfloat SpotCutoff
; /**< in degrees */
628 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
629 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
630 GLfloat ConstantAttenuation
;
631 GLfloat LinearAttenuation
;
632 GLfloat QuadraticAttenuation
;
633 GLboolean Enabled
; /**< On/off flag */
636 * \name Derived fields
639 GLbitfield _Flags
; /**< State */
641 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
642 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
643 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
644 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
645 GLfloat _VP_inf_spot_attenuation
;
647 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
648 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
649 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
650 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
651 GLfloat _dli
; /**< CI diffuse light intensity */
652 GLfloat _sli
; /**< CI specular light intensity */
662 GLfloat Ambient
[4]; /**< ambient color */
663 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
664 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
665 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
666 * or GL_SEPARATE_SPECULAR_COLOR */
675 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
680 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
682 struct gl_accum_attrib
684 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
689 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
691 struct gl_colorbuffer_attrib
693 GLuint ClearIndex
; /**< Index to use for glClear */
694 GLclampf ClearColor
[4]; /**< Color to use for glClear */
696 GLuint IndexMask
; /**< Color index write mask */
697 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4];/**< Each flag is 0xff or 0x0 */
699 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
702 * \name alpha testing
705 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
706 GLenum AlphaFunc
; /**< Alpha test function */
707 GLclampf AlphaRef
; /**< Alpha reference value */
714 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
715 GLenum BlendSrcRGB
; /**< Blending source operator */
716 GLenum BlendDstRGB
; /**< Blending destination operator */
717 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
718 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
719 GLenum BlendEquationRGB
; /**< Blending equation */
720 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
721 GLfloat BlendColor
[4]; /**< Blending color */
728 GLenum LogicOp
; /**< Logic operator */
729 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
730 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
731 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
734 GLboolean DitherFlag
; /**< Dither enable flag */
736 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
737 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
742 * Current attribute group (GL_CURRENT_BIT).
744 struct gl_current_attrib
747 * \name Current vertex attributes.
748 * \note Values are valid only after FLUSH_VERTICES has been called.
749 * \note Index and Edgeflag current values are stored as floats in the
750 * SIX and SEVEN attribute slots.
752 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
755 * \name Current raster position attributes (always valid).
756 * \note This set of attributes is very similar to the SWvertex struct.
759 GLfloat RasterPos
[4];
760 GLfloat RasterDistance
;
761 GLfloat RasterColor
[4];
762 GLfloat RasterSecondaryColor
[4];
763 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
764 GLboolean RasterPosValid
;
770 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
772 struct gl_depthbuffer_attrib
774 GLenum Func
; /**< Function for depth buffer compare */
775 GLclampd Clear
; /**< Value to clear depth buffer to */
776 GLboolean Test
; /**< Depth buffering enabled flag */
777 GLboolean Mask
; /**< Depth buffer writable? */
778 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
779 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
784 * Evaluator attribute group (GL_EVAL_BIT).
786 struct gl_eval_attrib
792 GLboolean Map1Color4
;
794 GLboolean Map1Normal
;
795 GLboolean Map1TextureCoord1
;
796 GLboolean Map1TextureCoord2
;
797 GLboolean Map1TextureCoord3
;
798 GLboolean Map1TextureCoord4
;
799 GLboolean Map1Vertex3
;
800 GLboolean Map1Vertex4
;
801 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
802 GLboolean Map2Color4
;
804 GLboolean Map2Normal
;
805 GLboolean Map2TextureCoord1
;
806 GLboolean Map2TextureCoord2
;
807 GLboolean Map2TextureCoord3
;
808 GLboolean Map2TextureCoord4
;
809 GLboolean Map2Vertex3
;
810 GLboolean Map2Vertex4
;
811 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
812 GLboolean AutoNormal
;
816 * \name Map Grid endpoints and divisions and calculated du values
820 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
821 GLint MapGrid2un
, MapGrid2vn
;
822 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
823 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
829 * Fog attribute group (GL_FOG_BIT).
833 GLboolean Enabled
; /**< Fog enabled flag */
834 GLfloat Color
[4]; /**< Fog color */
835 GLfloat Density
; /**< Density >= 0.0 */
836 GLfloat Start
; /**< Start distance in eye coords */
837 GLfloat End
; /**< End distance in eye coords */
838 GLfloat Index
; /**< Fog index */
839 GLenum Mode
; /**< Fog mode */
840 GLboolean ColorSumEnabled
;
841 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
842 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
847 * Hint attribute group (GL_HINT_BIT).
849 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
851 struct gl_hint_attrib
853 GLenum PerspectiveCorrection
;
856 GLenum PolygonSmooth
;
858 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
859 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
860 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
861 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
868 #define LIGHT_SPOT 0x1
869 #define LIGHT_LOCAL_VIEWER 0x2
870 #define LIGHT_POSITIONAL 0x4
871 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
876 * Lighting attribute group (GL_LIGHT_BIT).
878 struct gl_light_attrib
880 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
881 struct gl_lightmodel Model
; /**< Lighting model */
884 * Must flush FLUSH_VERTICES before referencing:
887 struct gl_material Material
; /**< Includes front & back values */
890 GLboolean Enabled
; /**< Lighting enabled flag */
891 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
892 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
893 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
894 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
895 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
896 GLboolean ColorMaterialEnabled
;
897 GLenum ClampVertexColor
;
899 struct gl_light EnabledList
; /**< List sentinel */
902 * Derived state for optimizations:
905 GLboolean _NeedEyeCoords
;
906 GLboolean _NeedVertices
; /**< Use fast shader? */
907 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
908 GLfloat _BaseColor
[2][3];
914 * Line attribute group (GL_LINE_BIT).
916 struct gl_line_attrib
918 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
919 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
920 GLushort StipplePattern
; /**< Stipple pattern */
921 GLint StippleFactor
; /**< Stipple repeat factor */
922 GLfloat Width
; /**< Line width */
927 * Display list attribute group (GL_LIST_BIT).
929 struct gl_list_attrib
936 * Multisample attribute group (GL_MULTISAMPLE_BIT).
938 struct gl_multisample_attrib
941 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
942 GLboolean SampleAlphaToCoverage
;
943 GLboolean SampleAlphaToOne
;
944 GLboolean SampleCoverage
;
945 GLfloat SampleCoverageValue
;
946 GLboolean SampleCoverageInvert
;
951 * A pixelmap (see glPixelMap)
956 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
957 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
962 * Collection of all pixelmaps
966 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
967 struct gl_pixelmap GtoG
;
968 struct gl_pixelmap BtoB
;
969 struct gl_pixelmap AtoA
;
970 struct gl_pixelmap ItoR
;
971 struct gl_pixelmap ItoG
;
972 struct gl_pixelmap ItoB
;
973 struct gl_pixelmap ItoA
;
974 struct gl_pixelmap ItoI
;
975 struct gl_pixelmap StoS
;
980 * Pixel attribute group (GL_PIXEL_MODE_BIT).
982 struct gl_pixel_attrib
984 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
986 /*--- Begin Pixel Transfer State ---*/
987 /* Fields are in the order in which they're applied... */
989 /** Scale & Bias (index shift, offset) */
991 GLfloat RedBias
, RedScale
;
992 GLfloat GreenBias
, GreenScale
;
993 GLfloat BlueBias
, BlueScale
;
994 GLfloat AlphaBias
, AlphaScale
;
995 GLfloat DepthBias
, DepthScale
;
996 GLint IndexShift
, IndexOffset
;
1000 /* Note: actual pixel maps are not part of this attrib group */
1001 GLboolean MapColorFlag
;
1002 GLboolean MapStencilFlag
;
1004 /*--- End Pixel Transfer State ---*/
1007 GLfloat ZoomX
, ZoomY
;
1009 /** GL_SGI_texture_color_table */
1010 GLfloat TextureColorTableScale
[4]; /**< RGBA */
1011 GLfloat TextureColorTableBias
[4]; /**< RGBA */
1016 * Point attribute group (GL_POINT_BIT).
1018 struct gl_point_attrib
1020 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1021 GLfloat Size
; /**< User-specified point size */
1022 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1023 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1024 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1025 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1026 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1027 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1028 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1029 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1034 * Polygon attribute group (GL_POLYGON_BIT).
1036 struct gl_polygon_attrib
1038 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1039 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1040 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1041 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1042 GLboolean CullFlag
; /**< Culling on/off flag */
1043 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1044 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1045 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1046 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1047 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1048 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1049 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1050 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1055 * Scissor attributes (GL_SCISSOR_BIT).
1057 struct gl_scissor_attrib
1059 GLboolean Enabled
; /**< Scissor test enabled? */
1060 GLint X
, Y
; /**< Lower left corner of box */
1061 GLsizei Width
, Height
; /**< Size of box */
1066 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1068 * Three sets of stencil data are tracked so that OpenGL 2.0,
1069 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1070 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1071 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1072 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1073 * GL_EXT_stencil_two_side GL_BACK state.
1075 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1076 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1078 * The derived value \c _TestTwoSide is set when the front-face and back-face
1079 * stencil state are different.
1081 struct gl_stencil_attrib
1083 GLboolean Enabled
; /**< Enabled flag */
1084 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1085 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1086 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1087 GLboolean _TestTwoSide
;
1088 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1089 GLenum Function
[3]; /**< Stencil function */
1090 GLenum FailFunc
[3]; /**< Fail function */
1091 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1092 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1093 GLint Ref
[3]; /**< Reference value */
1094 GLuint ValueMask
[3]; /**< Value mask */
1095 GLuint WriteMask
[3]; /**< Write mask */
1096 GLuint Clear
; /**< Clear value */
1101 * An index for each type of texture object. These correspond to the GL
1102 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1103 * Note: the order is from highest priority to lowest priority.
1107 TEXTURE_2D_ARRAY_INDEX
,
1108 TEXTURE_1D_ARRAY_INDEX
,
1119 * Bit flags for each type of texture object
1120 * Used for Texture.Unit[]._ReallyEnabled flags.
1123 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1124 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1125 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1126 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1127 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1128 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1129 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1134 * TexGenEnabled flags.
1141 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1146 * Bit flag versions of the corresponding GL_ constants.
1149 #define TEXGEN_SPHERE_MAP 0x1
1150 #define TEXGEN_OBJ_LINEAR 0x2
1151 #define TEXGEN_EYE_LINEAR 0x4
1152 #define TEXGEN_REFLECTION_MAP_NV 0x8
1153 #define TEXGEN_NORMAL_MAP_NV 0x10
1155 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1156 TEXGEN_REFLECTION_MAP_NV | \
1157 TEXGEN_NORMAL_MAP_NV)
1158 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1159 TEXGEN_REFLECTION_MAP_NV | \
1160 TEXGEN_NORMAL_MAP_NV | \
1166 /** Tex-gen enabled for texture unit? */
1167 #define ENABLE_TEXGEN(unit) (1 << (unit))
1169 /** Non-identity texture matrix for texture unit? */
1170 #define ENABLE_TEXMAT(unit) (1 << (unit))
1174 * Texel fetch function prototype. We use texel fetch functions to
1175 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1176 * texture images. These functions help to isolate us from the gritty
1177 * details of all the various texture image encodings.
1179 * \param texImage texture image.
1180 * \param col texel column.
1181 * \param row texel row.
1182 * \param img texel image level/layer.
1183 * \param texelOut output texel (up to 4 GLchans)
1185 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1186 GLint col
, GLint row
, GLint img
,
1190 * As above, but returns floats.
1191 * Used for depth component images and for upcoming signed/float
1194 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1195 GLint col
, GLint row
, GLint img
,
1196 GLfloat
*texelOut
);
1199 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1200 GLint col
, GLint row
, GLint img
,
1205 * Texture image state. Describes the dimensions of a texture image,
1206 * the texel format and pointers to Texel Fetch functions.
1208 struct gl_texture_image
1210 GLint InternalFormat
; /**< Internal format as given by the user */
1211 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1212 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1213 * GL_INTENSITY, GL_COLOR_INDEX,
1214 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1215 * only. Used for choosing TexEnv arithmetic.
1217 GLuint TexFormat
; /**< The actual format: MESA_FORMAT_x */
1219 GLuint Border
; /**< 0 or 1 */
1220 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1221 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1222 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1223 GLuint Width2
; /**< = Width - 2*Border */
1224 GLuint Height2
; /**< = Height - 2*Border */
1225 GLuint Depth2
; /**< = Depth - 2*Border */
1226 GLuint WidthLog2
; /**< = log2(Width2) */
1227 GLuint HeightLog2
; /**< = log2(Height2) */
1228 GLuint DepthLog2
; /**< = log2(Depth2) */
1229 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1230 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1231 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1232 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1233 GLboolean IsClientData
; /**< Data owned by client? */
1234 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1236 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1238 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1239 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1241 GLuint RowStride
; /**< Padded width in units of texels */
1242 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1243 each 2D slice in 'Data', in texels */
1244 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1247 * \name For device driver:
1250 void *DriverData
; /**< Arbitrary device driver data */
1256 * Indexes for cube map faces.
1271 * Texture object state. Contains the array of mipmap images, border color,
1272 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1275 struct gl_texture_object
1277 _glthread_Mutex Mutex
; /**< for thread safety */
1278 GLint RefCount
; /**< reference count */
1279 GLuint Name
; /**< the user-visible texture object ID */
1280 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1281 GLfloat Priority
; /**< in [0,1] */
1286 } BorderColor
; /**< Interpreted according to texture format */
1287 GLenum WrapS
; /**< S-axis texture image wrap mode */
1288 GLenum WrapT
; /**< T-axis texture image wrap mode */
1289 GLenum WrapR
; /**< R-axis texture image wrap mode */
1290 GLenum MinFilter
; /**< minification filter */
1291 GLenum MagFilter
; /**< magnification filter */
1292 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1293 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1294 GLfloat LodBias
; /**< OpenGL 1.4 */
1295 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1296 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
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 DepthMode
; /**< GL_ARB_depth_texture */
1302 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1303 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1304 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1305 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1306 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1307 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1308 GLboolean _Complete
; /**< Is texture object complete? */
1309 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1310 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1312 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1313 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1315 /** GL_EXT_paletted_texture */
1316 struct gl_color_table Palette
;
1319 * \name For device driver.
1320 * Note: instead of attaching driver data to this pointer, it's preferable
1321 * to instead use this struct as a base class for your own texture object
1322 * class. Driver->NewTextureObject() can be used to implement the
1325 void *DriverData
; /**< Arbitrary device driver data */
1329 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1330 #define MAX_COMBINER_TERMS 4
1334 * Texture combine environment state.
1336 struct gl_tex_env_combine_state
1338 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1339 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1340 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1341 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1342 GLenum SourceA
[MAX_COMBINER_TERMS
];
1343 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1344 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1345 GLenum OperandA
[MAX_COMBINER_TERMS
];
1346 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1347 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1348 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1349 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1354 * Texture coord generation state.
1358 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1359 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1360 GLfloat ObjectPlane
[4];
1361 GLfloat EyePlane
[4];
1366 * Texture unit state. Contains enable flags, texture environment/function/
1367 * combiners, texgen state, pointers to current texture objects and
1368 * post-filter color tables.
1370 struct gl_texture_unit
1372 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1373 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1375 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1376 GLfloat EnvColor
[4];
1378 struct gl_texgen GenS
;
1379 struct gl_texgen GenT
;
1380 struct gl_texgen GenR
;
1381 struct gl_texgen GenQ
;
1382 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1383 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1385 GLfloat LodBias
; /**< for biasing mipmap levels */
1387 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1390 * \name GL_EXT_texture_env_combine
1392 struct gl_tex_env_combine_state Combine
;
1395 * Derived state based on \c EnvMode and the \c BaseFormat of the
1396 * currently enabled texture.
1398 struct gl_tex_env_combine_state _EnvMode
;
1401 * Currently enabled combiner state. This will point to either
1402 * \c Combine or \c _EnvMode.
1404 struct gl_tex_env_combine_state
*_CurrentCombine
;
1406 /** Current texture object pointers */
1407 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1409 /** Points to highest priority, complete and enabled texture object */
1410 struct gl_texture_object
*_Current
;
1412 /** GL_SGI_texture_color_table */
1414 struct gl_color_table ColorTable
;
1415 struct gl_color_table ProxyColorTable
;
1416 GLboolean ColorTableEnabled
;
1422 * Texture attribute group (GL_TEXTURE_BIT).
1424 struct gl_texture_attrib
1426 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1427 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1429 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1431 /** GL_ARB_seamless_cubemap */
1432 GLboolean CubeMapSeamless
;
1434 /** GL_EXT_shared_texture_palette */
1435 GLboolean SharedPalette
;
1436 struct gl_color_table Palette
;
1438 /** Texture units/samplers used by vertex or fragment texturing */
1439 GLbitfield _EnabledUnits
;
1441 /** Texture coord units/sets used for fragment texturing */
1442 GLbitfield _EnabledCoordUnits
;
1444 /** Texture coord units that have texgen enabled */
1445 GLbitfield _TexGenEnabled
;
1447 /** Texture coord units that have non-identity matrices */
1448 GLbitfield _TexMatEnabled
;
1450 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1451 GLbitfield _GenFlags
;
1456 * Transformation attribute group (GL_TRANSFORM_BIT).
1458 struct gl_transform_attrib
1460 GLenum MatrixMode
; /**< Matrix mode */
1461 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1462 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1463 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1464 GLboolean Normalize
; /**< Normalize all normals? */
1465 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1466 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1467 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1469 GLfloat CullEyePos
[4];
1470 GLfloat CullObjPos
[4];
1475 * Viewport attribute group (GL_VIEWPORT_BIT).
1477 struct gl_viewport_attrib
1479 GLint X
, Y
; /**< position */
1480 GLsizei Width
, Height
; /**< size */
1481 GLfloat Near
, Far
; /**< Depth buffer range */
1482 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1487 * GL_ARB_vertex/pixel_buffer_object buffer object
1489 struct gl_buffer_object
1491 _glthread_Mutex Mutex
;
1494 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1495 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1496 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1497 /** Fields describing a mapped buffer */
1499 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1500 GLvoid
*Pointer
; /**< User-space address of mapping */
1501 GLintptr Offset
; /**< Mapped offset */
1502 GLsizeiptr Length
; /**< Mapped length */
1504 GLboolean Written
; /**< Ever written to? (for debugging) */
1505 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1510 * Client pixel packing/unpacking attributes
1512 struct gl_pixelstore_attrib
1520 GLboolean SwapBytes
;
1522 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1523 GLboolean Invert
; /**< GL_MESA_pack_invert */
1524 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1529 * Client vertex array attributes
1531 struct gl_client_array
1533 GLint Size
; /**< components per element (1,2,3,4) */
1534 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1535 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1536 GLsizei Stride
; /**< user-specified stride */
1537 GLsizei StrideB
; /**< actual stride in bytes */
1538 const GLubyte
*Ptr
; /**< Points to array data */
1539 GLboolean Enabled
; /**< Enabled flag is a boolean */
1540 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1541 GLboolean Integer
; /**< Integer-valued? */
1542 GLuint _ElementSize
; /**< size of each element in bytes */
1544 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1545 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1550 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1551 * extension, but a nice encapsulation in any case.
1553 struct gl_array_object
1555 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1559 _glthread_Mutex Mutex
;
1560 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1562 /** Conventional vertex arrays */
1564 struct gl_client_array Vertex
;
1565 struct gl_client_array Weight
;
1566 struct gl_client_array Normal
;
1567 struct gl_client_array Color
;
1568 struct gl_client_array SecondaryColor
;
1569 struct gl_client_array FogCoord
;
1570 struct gl_client_array Index
;
1571 struct gl_client_array EdgeFlag
;
1572 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1573 struct gl_client_array PointSize
;
1577 * Generic arrays for vertex programs/shaders.
1578 * For NV vertex programs, these attributes alias and take priority
1579 * over the conventional attribs above. For ARB vertex programs and
1580 * GLSL vertex shaders, these attributes are separate.
1582 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1584 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1585 GLbitfield _Enabled
;
1588 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1589 * we can determine the max legal (in bounds) glDrawElements array index.
1596 * Vertex array state
1598 struct gl_array_attrib
1600 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1601 struct gl_array_object
*ArrayObj
;
1603 /** The default vertex array object */
1604 struct gl_array_object
*DefaultArrayObj
;
1606 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1607 struct _mesa_HashTable
*Objects
;
1609 GLint ActiveTexture
; /**< Client Active Texture */
1610 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1611 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1613 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1614 GLboolean PrimitiveRestart
;
1615 GLuint RestartIndex
;
1617 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1619 /* GL_ARB_vertex_buffer_object */
1620 struct gl_buffer_object
*ArrayBufferObj
;
1621 struct gl_buffer_object
*ElementArrayBufferObj
;
1626 * Feedback buffer state
1631 GLbitfield _Mask
; /**< FB_* bits */
1639 * Selection buffer state
1643 GLuint
*Buffer
; /**< selection buffer */
1644 GLuint BufferSize
; /**< size of the selection buffer */
1645 GLuint BufferCount
; /**< number of values in the selection buffer */
1646 GLuint Hits
; /**< number of records in the selection buffer */
1647 GLuint NameStackDepth
; /**< name stack depth */
1648 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1649 GLboolean HitFlag
; /**< hit flag */
1650 GLfloat HitMinZ
; /**< minimum hit depth */
1651 GLfloat HitMaxZ
; /**< maximum hit depth */
1656 * 1-D Evaluator control points
1660 GLuint Order
; /**< Number of control points */
1661 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1662 GLfloat
*Points
; /**< Points to contiguous control points */
1667 * 2-D Evaluator control points
1671 GLuint Uorder
; /**< Number of control points in U dimension */
1672 GLuint Vorder
; /**< Number of control points in V dimension */
1675 GLfloat
*Points
; /**< Points to contiguous control points */
1680 * All evaluator control point state
1682 struct gl_evaluators
1688 struct gl_1d_map Map1Vertex3
;
1689 struct gl_1d_map Map1Vertex4
;
1690 struct gl_1d_map Map1Index
;
1691 struct gl_1d_map Map1Color4
;
1692 struct gl_1d_map Map1Normal
;
1693 struct gl_1d_map Map1Texture1
;
1694 struct gl_1d_map Map1Texture2
;
1695 struct gl_1d_map Map1Texture3
;
1696 struct gl_1d_map Map1Texture4
;
1697 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1704 struct gl_2d_map Map2Vertex3
;
1705 struct gl_2d_map Map2Vertex4
;
1706 struct gl_2d_map Map2Index
;
1707 struct gl_2d_map Map2Color4
;
1708 struct gl_2d_map Map2Normal
;
1709 struct gl_2d_map Map2Texture1
;
1710 struct gl_2d_map Map2Texture2
;
1711 struct gl_2d_map Map2Texture3
;
1712 struct gl_2d_map Map2Texture4
;
1713 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1719 * Names of the various vertex/fragment program register files, etc.
1721 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1722 * All values should fit in a 4-bit field.
1724 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1725 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1726 * be "uniform" variables since they can only be set outside glBegin/End.
1727 * They're also all stored in the same Parameters array.
1731 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1732 PROGRAM_INPUT
, /**< machine->Inputs[] */
1733 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1734 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1735 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1736 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1737 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1738 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1739 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1740 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1741 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1742 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1743 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1744 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1749 /** Vertex and fragment instructions */
1750 struct prog_instruction
;
1751 struct gl_program_parameter_list
;
1752 struct gl_uniform_list
;
1756 * Base class for any kind of program object
1761 GLubyte
*String
; /**< Null-terminated program text */
1763 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1764 GLenum Format
; /**< String encoding format */
1767 struct prog_instruction
*Instructions
;
1769 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1770 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1771 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1772 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1773 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1774 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1775 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1778 /** Named parameters, constants, etc. from program text */
1779 struct gl_program_parameter_list
*Parameters
;
1780 /** Numbered local parameters */
1781 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1783 /** Vertex/fragment shader varying vars */
1784 struct gl_program_parameter_list
*Varying
;
1785 /** Vertex program user-defined attributes */
1786 struct gl_program_parameter_list
*Attributes
;
1788 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1789 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1790 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1791 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1793 /** Bitmask of which register files are read/written with indirect
1794 * addressing. Mask of (1 << PROGRAM_x) bits.
1796 GLbitfield IndirectRegisterFiles
;
1798 /** Logical counts */
1800 GLuint NumInstructions
;
1801 GLuint NumTemporaries
;
1802 GLuint NumParameters
;
1803 GLuint NumAttributes
;
1804 GLuint NumAddressRegs
;
1805 GLuint NumAluInstructions
;
1806 GLuint NumTexInstructions
;
1807 GLuint NumTexIndirections
;
1809 /** Native, actual h/w counts */
1811 GLuint NumNativeInstructions
;
1812 GLuint NumNativeTemporaries
;
1813 GLuint NumNativeParameters
;
1814 GLuint NumNativeAttributes
;
1815 GLuint NumNativeAddressRegs
;
1816 GLuint NumNativeAluInstructions
;
1817 GLuint NumNativeTexInstructions
;
1818 GLuint NumNativeTexIndirections
;
1823 /** Vertex program object */
1824 struct gl_vertex_program
1826 struct gl_program Base
; /**< base class */
1827 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1828 GLboolean IsPositionInvariant
;
1832 /** Geometry program object */
1833 struct gl_geometry_program
1835 struct gl_program Base
; /**< base class */
1838 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1839 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1840 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1844 /** Fragment program object */
1845 struct gl_fragment_program
1847 struct gl_program Base
; /**< base class */
1849 GLboolean UsesKill
; /**< shader uses KIL instruction */
1850 GLboolean OriginUpperLeft
;
1851 GLboolean PixelCenterInteger
;
1856 * State common to vertex and fragment programs.
1858 struct gl_program_state
1860 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1861 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1866 * Context state for vertex programs.
1868 struct gl_vertex_program_state
1870 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1871 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1872 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1873 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1874 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1876 /** Currently enabled and valid vertex program (including internal
1877 * programs, user-defined vertex programs and GLSL vertex shaders).
1878 * This is the program we must use when rendering.
1880 struct gl_vertex_program
*_Current
;
1882 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1884 /* For GL_NV_vertex_program only: */
1885 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1886 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1888 /** Should fixed-function T&L be implemented with a vertex prog? */
1889 GLboolean _MaintainTnlProgram
;
1891 /** Program to emulate fixed-function T&L (see above) */
1892 struct gl_vertex_program
*_TnlProgram
;
1894 /** Cache of fixed-function programs */
1895 struct gl_program_cache
*Cache
;
1897 GLboolean _Overriden
;
1902 * Context state for geometry programs.
1904 struct gl_geometry_program_state
1906 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1907 GLboolean _Enabled
; /**< Enabled and valid program? */
1908 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1910 /** Currently enabled and valid program (including internal programs
1911 * and compiled shader programs).
1913 struct gl_geometry_program
*_Current
;
1915 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1917 /** Cache of fixed-function programs */
1918 struct gl_program_cache
*Cache
;
1922 * Context state for fragment programs.
1924 struct gl_fragment_program_state
1926 GLboolean Enabled
; /**< User-set fragment program enable flag */
1927 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1928 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1930 /** Currently enabled and valid fragment program (including internal
1931 * programs, user-defined fragment programs and GLSL fragment shaders).
1932 * This is the program we must use when rendering.
1934 struct gl_fragment_program
*_Current
;
1936 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1938 /** Should fixed-function texturing be implemented with a fragment prog? */
1939 GLboolean _MaintainTexEnvProgram
;
1941 /** Program to emulate fixed-function texture env/combine (see above) */
1942 struct gl_fragment_program
*_TexEnvProgram
;
1944 /** Cache of fixed-function programs */
1945 struct gl_program_cache
*Cache
;
1950 * ATI_fragment_shader runtime state
1952 #define ATI_FS_INPUT_PRIMARY 0
1953 #define ATI_FS_INPUT_SECONDARY 1
1955 struct atifs_instruction
;
1956 struct atifs_setupinst
;
1959 * ATI fragment shader
1961 struct ati_fragment_shader
1965 struct atifs_instruction
*Instructions
[2];
1966 struct atifs_setupinst
*SetupInst
[2];
1967 GLfloat Constants
[8][4];
1968 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
1969 GLubyte numArithInstr
[2];
1970 GLubyte regsAssigned
[2];
1971 GLubyte NumPasses
; /**< 1 or 2 */
1973 GLubyte last_optype
;
1974 GLboolean interpinp1
;
1980 * Context state for GL_ATI_fragment_shader
1982 struct gl_ati_fragment_shader_state
1985 GLboolean _Enabled
; /**< enabled and valid shader? */
1986 GLboolean Compiling
;
1987 GLfloat GlobalConstants
[8][4];
1988 struct ati_fragment_shader
*Current
;
1993 * Occlusion/timer query object.
1995 struct gl_query_object
1997 GLenum Target
; /**< The query target, when active */
1998 GLuint Id
; /**< hash table ID/name */
1999 GLuint64EXT Result
; /**< the counter */
2000 GLboolean Active
; /**< inside Begin/EndQuery */
2001 GLboolean Ready
; /**< result is ready? */
2006 * Context state for query objects.
2008 struct gl_query_state
2010 struct _mesa_HashTable
*QueryObjects
;
2011 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2012 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2014 /** GL_NV_conditional_render */
2015 struct gl_query_object
*CondRenderQuery
;
2017 /** GL_EXT_transform_feedback */
2018 struct gl_query_object
*PrimitivesGenerated
;
2019 struct gl_query_object
*PrimitivesWritten
;
2021 /** GL_ARB_timer_query */
2022 struct gl_query_object
*TimeElapsed
;
2024 GLenum CondRenderMode
;
2028 /** Sync object state */
2029 struct gl_sync_object
{
2030 struct simple_node link
;
2031 GLenum Type
; /**< GL_SYNC_FENCE */
2032 GLuint Name
; /**< Fence name */
2033 GLint RefCount
; /**< Reference count */
2034 GLboolean DeletePending
; /**< Object was deleted while there were still
2035 * live references (e.g., sync not yet finished)
2037 GLenum SyncCondition
;
2038 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2039 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2043 /** Set by #pragma directives */
2044 struct gl_sl_pragmas
2046 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2047 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2048 GLboolean Optimize
; /**< defaults on */
2049 GLboolean Debug
; /**< defaults off */
2054 * A GLSL vertex or fragment shader object.
2058 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2059 GLuint Name
; /**< AKA the handle */
2060 GLint RefCount
; /**< Reference count */
2061 GLboolean DeletePending
;
2062 GLboolean CompileStatus
;
2063 GLboolean Main
; /**< shader defines main() */
2064 GLboolean UnresolvedRefs
;
2065 const GLchar
*Source
; /**< Source code string */
2066 GLuint SourceChecksum
; /**< for debug/logging purposes */
2067 struct gl_program
*Program
; /**< Post-compile assembly code */
2069 struct gl_sl_pragmas Pragmas
;
2071 unsigned Version
; /**< GLSL version used for linking */
2073 struct exec_list
*ir
;
2074 struct glsl_symbol_table
*symbols
;
2076 /** Shaders containing built-in functions that are used for linking. */
2077 struct gl_shader
*builtins_to_link
[16];
2078 unsigned num_builtins_to_link
;
2083 * A GLSL program object.
2084 * Basically a linked collection of vertex and fragment shaders.
2086 struct gl_shader_program
2088 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2089 GLuint Name
; /**< aka handle or ID */
2090 GLint RefCount
; /**< Reference count */
2091 GLboolean DeletePending
;
2093 GLuint NumShaders
; /**< number of attached shaders */
2094 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2096 /** User-defined attribute bindings (glBindAttribLocation) */
2097 struct gl_program_parameter_list
*Attributes
;
2099 /** Transform feedback varyings */
2103 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2104 } TransformFeedback
;
2106 /** Geometry shader state - copied into gl_geometry_program at link time */
2109 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2110 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2111 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2114 /* post-link info: */
2115 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2116 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2117 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2118 struct gl_uniform_list
*Uniforms
;
2119 struct gl_program_parameter_list
*Varying
;
2120 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2121 GLboolean Validated
;
2122 GLboolean _Used
; /**< Ever used for drawing? */
2125 unsigned Version
; /**< GLSL version used for linking */
2128 * Per-stage shaders resulting from the first stage of linking.
2130 * Set of linked shaders for this program. The array is accessed using the
2131 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2134 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2138 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2139 #define GLSL_LOG 0x2 /**< Write shaders to files */
2140 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2141 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2142 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2143 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2144 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2145 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2149 * Context state for GLSL vertex/fragment shaders.
2151 struct gl_shader_state
2154 * Programs used for rendering
2156 * There is a separate program set for each shader stage. If
2157 * GL_EXT_separate_shader_objects is not supported, each of these must point
2158 * to \c NULL or to the same program.
2160 struct gl_shader_program
*CurrentVertexProgram
;
2161 struct gl_shader_program
*CurrentGeometryProgram
;
2162 struct gl_shader_program
*CurrentFragmentProgram
;
2165 * Program used by glUniform calls.
2167 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2169 struct gl_shader_program
*ActiveProgram
;
2173 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2177 * Compiler options for a single GLSL shaders type
2179 struct gl_shader_compiler_options
2181 /** Driver-selectable options: */
2182 GLboolean EmitCondCodes
; /**< Use condition codes? */
2183 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2185 * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't
2186 * support control flow.
2188 GLboolean EmitNoIfs
;
2189 GLboolean EmitNoLoops
;
2190 GLboolean EmitNoFunctions
;
2191 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2192 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2193 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2196 * \name Forms of indirect addressing the driver cannot do.
2199 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2200 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2201 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2202 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2205 GLuint MaxUnrollIterations
;
2207 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2211 * Transform feedback object state
2213 struct gl_transform_feedback_object
2215 GLuint Name
; /**< AKA the object ID */
2217 GLboolean Active
; /**< Is transform feedback enabled? */
2218 GLboolean Paused
; /**< Is transform feedback paused? */
2220 /** The feedback buffers */
2221 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2222 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2224 /** Start of feedback data in dest buffer */
2225 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2226 /** Max data to put into dest buffer (in bytes) */
2227 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2232 * Context state for transform feedback.
2234 struct gl_transform_feedback
2236 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2238 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2240 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2241 struct gl_buffer_object
*CurrentBuffer
;
2243 /** The table of all transform feedback objects */
2244 struct _mesa_HashTable
*Objects
;
2246 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2247 struct gl_transform_feedback_object
*CurrentObject
;
2249 /** The default xform-fb object (Name==0) */
2250 struct gl_transform_feedback_object
*DefaultObject
;
2256 * State which can be shared by multiple contexts:
2258 struct gl_shared_state
2260 _glthread_Mutex Mutex
; /**< for thread safety */
2261 GLint RefCount
; /**< Reference count */
2262 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2263 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2265 /** Default texture objects (shared by all texture units) */
2266 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2268 /** Fallback texture used when a bound texture is incomplete */
2269 struct gl_texture_object
*FallbackTex
;
2272 * \name Thread safety and statechange notification for texture
2275 * \todo Improve the granularity of locking.
2278 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2279 GLuint TextureStateStamp
; /**< state notification for shared tex */
2282 /** Default buffer object for vertex arrays that aren't in VBOs */
2283 struct gl_buffer_object
*NullBufferObj
;
2286 * \name Vertex/geometry/fragment programs
2289 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2290 struct gl_vertex_program
*DefaultVertexProgram
;
2291 struct gl_fragment_program
*DefaultFragmentProgram
;
2292 struct gl_geometry_program
*DefaultGeometryProgram
;
2295 /* GL_ATI_fragment_shader */
2296 struct _mesa_HashTable
*ATIShaders
;
2297 struct ati_fragment_shader
*DefaultFragmentShader
;
2299 struct _mesa_HashTable
*BufferObjects
;
2301 /** Table of both gl_shader and gl_shader_program objects */
2302 struct _mesa_HashTable
*ShaderObjects
;
2304 /* GL_EXT_framebuffer_object */
2305 struct _mesa_HashTable
*RenderBuffers
;
2306 struct _mesa_HashTable
*FrameBuffers
;
2309 struct simple_node SyncObjects
;
2311 void *DriverData
; /**< Device driver shared state */
2318 * A renderbuffer stores colors or depth values or stencil values.
2319 * A framebuffer object will have a collection of these.
2320 * Data are read/written to the buffer with a handful of Get/Put functions.
2322 * Instances of this object are allocated with the Driver's NewRenderbuffer
2323 * hook. Drivers will likely wrap this class inside a driver-specific
2324 * class to simulate inheritance.
2326 struct gl_renderbuffer
2328 #define RB_MAGIC 0xaabbccdd
2329 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2330 _glthread_Mutex Mutex
; /**< for thread safety */
2331 GLuint ClassID
; /**< Useful for drivers */
2334 GLuint Width
, Height
;
2335 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2337 GLenum InternalFormat
; /**< The user-specified format */
2338 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2339 GL_STENCIL_INDEX. */
2340 GLuint Format
; /**< The actual format: MESA_FORMAT_x */
2344 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2345 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2347 /* Used to wrap one renderbuffer around another: */
2348 struct gl_renderbuffer
*Wrapped
;
2350 /* Delete this renderbuffer */
2351 void (*Delete
)(struct gl_renderbuffer
*rb
);
2353 /* Allocate new storage for this renderbuffer */
2354 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2355 GLenum internalFormat
,
2356 GLuint width
, GLuint height
);
2358 /* Lock/Unlock are called before/after calling the Get/Put functions.
2359 * Not sure this is the right place for these yet.
2360 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2361 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2364 /* Return a pointer to the element/pixel at (x,y).
2365 * Should return NULL if the buffer memory can't be directly addressed.
2367 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2370 /* Get/Read a row of values.
2371 * The values will be of format _BaseFormat and type DataType.
2373 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2374 GLint x
, GLint y
, void *values
);
2376 /* Get/Read values at arbitrary locations.
2377 * The values will be of format _BaseFormat and type DataType.
2379 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2380 const GLint x
[], const GLint y
[], void *values
);
2382 /* Put/Write a row of values.
2383 * The values will be of format _BaseFormat and type DataType.
2385 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2386 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2388 /* Put/Write a row of RGB values. This is a special-case routine that's
2389 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2390 * a common case for glDrawPixels and some triangle routines.
2391 * The values will be of format GL_RGB and type DataType.
2393 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2394 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2397 /* Put/Write a row of identical values.
2398 * The values will be of format _BaseFormat and type DataType.
2400 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2401 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2403 /* Put/Write values at arbitrary locations.
2404 * The values will be of format _BaseFormat and type DataType.
2406 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2407 const GLint x
[], const GLint y
[], const void *values
,
2408 const GLubyte
*mask
);
2409 /* Put/Write identical values at arbitrary locations.
2410 * The values will be of format _BaseFormat and type DataType.
2412 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2413 GLuint count
, const GLint x
[], const GLint y
[],
2414 const void *value
, const GLubyte
*mask
);
2419 * A renderbuffer attachment points to either a texture object (and specifies
2420 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2422 struct gl_renderbuffer_attachment
2424 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2428 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2429 * application supplied renderbuffer object.
2431 struct gl_renderbuffer
*Renderbuffer
;
2434 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2435 * supplied texture object.
2437 struct gl_texture_object
*Texture
;
2438 GLuint TextureLevel
; /**< Attached mipmap level. */
2439 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2440 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2441 * and 2D array textures */
2446 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2447 * In C++ terms, think of this as a base class from which device drivers
2448 * will make derived classes.
2450 struct gl_framebuffer
2452 _glthread_Mutex Mutex
; /**< for thread safety */
2454 * If zero, this is a window system framebuffer. If non-zero, this
2455 * is a FBO framebuffer; note that for some devices (i.e. those with
2456 * a natural pixel coordinate system for FBOs that differs from the
2457 * OpenGL/Mesa coordinate system), this means that the viewport,
2458 * polygon face orientation, and polygon stipple will have to be inverted.
2463 GLboolean DeletePending
;
2466 * The framebuffer's visual. Immutable if this is a window system buffer.
2467 * Computed from attachments if user-made FBO.
2469 struct gl_config Visual
;
2471 GLboolean Initialized
;
2473 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2475 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2477 GLint _Xmin
, _Xmax
; /**< inclusive */
2478 GLint _Ymin
, _Ymax
; /**< exclusive */
2481 /** \name Derived Z buffer stuff */
2483 GLuint _DepthMax
; /**< Max depth buffer value */
2484 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2485 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2488 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2491 /** Integer color values */
2492 GLboolean _IntegerColor
;
2494 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2495 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2497 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2498 * attribute group and GL_PIXEL attribute group, respectively.
2500 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2501 GLenum ColorReadBuffer
;
2503 /** Computed from ColorDraw/ReadBuffer above */
2504 GLuint _NumColorDrawBuffers
;
2505 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2506 GLint _ColorReadBufferIndex
; /* -1 = None */
2507 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2508 struct gl_renderbuffer
*_ColorReadBuffer
;
2510 /** The Actual depth/stencil buffers to use. May be wrappers around the
2511 * depth/stencil buffers attached above. */
2512 struct gl_renderbuffer
*_DepthBuffer
;
2513 struct gl_renderbuffer
*_StencilBuffer
;
2515 /** Delete this framebuffer */
2516 void (*Delete
)(struct gl_framebuffer
*fb
);
2521 * Limits for vertex and fragment programs/shaders.
2523 struct gl_program_constants
2525 /* logical limits */
2526 GLuint MaxInstructions
;
2527 GLuint MaxAluInstructions
;
2528 GLuint MaxTexInstructions
;
2529 GLuint MaxTexIndirections
;
2532 GLuint MaxAddressRegs
;
2533 GLuint MaxParameters
;
2534 GLuint MaxLocalParams
;
2535 GLuint MaxEnvParams
;
2536 /* native/hardware limits */
2537 GLuint MaxNativeInstructions
;
2538 GLuint MaxNativeAluInstructions
;
2539 GLuint MaxNativeTexInstructions
;
2540 GLuint MaxNativeTexIndirections
;
2541 GLuint MaxNativeAttribs
;
2542 GLuint MaxNativeTemps
;
2543 GLuint MaxNativeAddressRegs
;
2544 GLuint MaxNativeParameters
;
2546 GLuint MaxUniformComponents
;
2547 /* GL_ARB_geometry_shader4 */
2548 GLuint MaxGeometryTextureImageUnits
;
2549 GLuint MaxGeometryVaryingComponents
;
2550 GLuint MaxVertexVaryingComponents
;
2551 GLuint MaxGeometryUniformComponents
;
2552 GLuint MaxGeometryOutputVertices
;
2553 GLuint MaxGeometryTotalOutputComponents
;
2558 * Constants which may be overridden by device driver during context creation
2559 * but are never changed after that.
2563 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2564 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2565 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2566 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2567 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2568 GLuint MaxTextureCoordUnits
;
2569 GLuint MaxTextureImageUnits
;
2570 GLuint MaxVertexTextureImageUnits
;
2571 GLuint MaxCombinedTextureImageUnits
;
2572 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2573 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2574 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2576 GLuint MaxArrayLockSize
;
2580 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2581 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2582 GLfloat PointSizeGranularity
;
2583 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2584 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2585 GLfloat LineWidthGranularity
;
2587 GLuint MaxColorTableSize
;
2589 GLuint MaxClipPlanes
;
2591 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2592 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2594 GLuint MaxViewportWidth
, MaxViewportHeight
;
2596 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2597 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2598 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2599 GLuint MaxProgramMatrices
;
2600 GLuint MaxProgramMatrixStackDepth
;
2602 /** vertex array / buffer object bounds checking */
2603 GLboolean CheckArrayBounds
;
2605 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2607 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2608 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2609 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2611 GLuint MaxVarying
; /**< Number of float[4] varying parameters */
2613 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2615 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2616 GLbitfield SupportedBumpUnits
;
2619 * Maximum amount of time, measured in nanseconds, that the server can wait.
2621 GLuint64 MaxServerWaitTimeout
;
2623 /** GL_EXT_provoking_vertex */
2624 GLboolean QuadsFollowProvokingVertexConvention
;
2626 /** OpenGL version 3.0 */
2627 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2629 /** OpenGL version 3.2 */
2630 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2632 /** GL_EXT_transform_feedback */
2633 GLuint MaxTransformFeedbackSeparateAttribs
;
2634 GLuint MaxTransformFeedbackSeparateComponents
;
2635 GLuint MaxTransformFeedbackInterleavedComponents
;
2637 /** GL_EXT_gpu_shader4 */
2638 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2643 * Enable flag for each OpenGL extension. Different device drivers will
2644 * enable different extensions at runtime.
2646 struct gl_extensions
2648 GLboolean dummy
; /* don't remove this! */
2649 GLboolean ARB_blend_func_extended
;
2650 GLboolean ARB_copy_buffer
;
2651 GLboolean ARB_depth_buffer_float
;
2652 GLboolean ARB_depth_clamp
;
2653 GLboolean ARB_depth_texture
;
2654 GLboolean ARB_draw_buffers
;
2655 GLboolean ARB_draw_elements_base_vertex
;
2656 GLboolean ARB_draw_instanced
;
2657 GLboolean ARB_fragment_coord_conventions
;
2658 GLboolean ARB_fragment_program
;
2659 GLboolean ARB_fragment_program_shadow
;
2660 GLboolean ARB_fragment_shader
;
2661 GLboolean ARB_framebuffer_object
;
2662 GLboolean ARB_explicit_attrib_location
;
2663 GLboolean ARB_geometry_shader4
;
2664 GLboolean ARB_half_float_pixel
;
2665 GLboolean ARB_half_float_vertex
;
2666 GLboolean ARB_instanced_arrays
;
2667 GLboolean ARB_map_buffer_range
;
2668 GLboolean ARB_multisample
;
2669 GLboolean ARB_multitexture
;
2670 GLboolean ARB_occlusion_query
;
2671 GLboolean ARB_occlusion_query2
;
2672 GLboolean ARB_point_sprite
;
2673 GLboolean ARB_sampler_objects
;
2674 GLboolean ARB_seamless_cube_map
;
2675 GLboolean ARB_shader_objects
;
2676 GLboolean ARB_shader_stencil_export
;
2677 GLboolean ARB_shading_language_100
;
2678 GLboolean ARB_shadow
;
2679 GLboolean ARB_shadow_ambient
;
2681 GLboolean ARB_texture_border_clamp
;
2682 GLboolean ARB_texture_buffer_object
;
2683 GLboolean ARB_texture_compression
;
2684 GLboolean ARB_texture_compression_rgtc
;
2685 GLboolean ARB_texture_cube_map
;
2686 GLboolean ARB_texture_env_combine
;
2687 GLboolean ARB_texture_env_crossbar
;
2688 GLboolean ARB_texture_env_dot3
;
2689 GLboolean ARB_texture_float
;
2690 GLboolean ARB_texture_mirrored_repeat
;
2691 GLboolean ARB_texture_multisample
;
2692 GLboolean ARB_texture_non_power_of_two
;
2693 GLboolean ARB_texture_rg
;
2694 GLboolean ARB_texture_rgb10_a2ui
;
2695 GLboolean ARB_timer_query
;
2696 GLboolean ARB_transform_feedback2
;
2697 GLboolean ARB_transpose_matrix
;
2698 GLboolean ARB_uniform_buffer_object
;
2699 GLboolean ARB_vertex_array_object
;
2700 GLboolean ARB_vertex_buffer_object
;
2701 GLboolean ARB_vertex_program
;
2702 GLboolean ARB_vertex_shader
;
2703 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2704 GLboolean ARB_window_pos
;
2707 GLboolean EXT_blend_color
;
2708 GLboolean EXT_blend_equation_separate
;
2709 GLboolean EXT_blend_func_separate
;
2710 GLboolean EXT_blend_logic_op
;
2711 GLboolean EXT_blend_minmax
;
2712 GLboolean EXT_blend_subtract
;
2713 GLboolean EXT_clip_volume_hint
;
2714 GLboolean EXT_compiled_vertex_array
;
2715 GLboolean EXT_copy_texture
;
2716 GLboolean EXT_depth_bounds_test
;
2717 GLboolean EXT_draw_buffers2
;
2718 GLboolean EXT_draw_range_elements
;
2719 GLboolean EXT_fog_coord
;
2720 GLboolean EXT_framebuffer_blit
;
2721 GLboolean EXT_framebuffer_multisample
;
2722 GLboolean EXT_framebuffer_object
;
2723 GLboolean EXT_framebuffer_sRGB
;
2724 GLboolean EXT_gpu_program_parameters
;
2725 GLboolean EXT_gpu_shader4
;
2726 GLboolean EXT_multi_draw_arrays
;
2727 GLboolean EXT_paletted_texture
;
2728 GLboolean EXT_packed_depth_stencil
;
2729 GLboolean EXT_packed_float
;
2730 GLboolean EXT_packed_pixels
;
2731 GLboolean EXT_pixel_buffer_object
;
2732 GLboolean EXT_point_parameters
;
2733 GLboolean EXT_polygon_offset
;
2734 GLboolean EXT_provoking_vertex
;
2735 GLboolean EXT_rescale_normal
;
2736 GLboolean EXT_shadow_funcs
;
2737 GLboolean EXT_secondary_color
;
2738 GLboolean EXT_separate_shader_objects
;
2739 GLboolean EXT_separate_specular_color
;
2740 GLboolean EXT_shared_texture_palette
;
2741 GLboolean EXT_stencil_wrap
;
2742 GLboolean EXT_stencil_two_side
;
2743 GLboolean EXT_subtexture
;
2744 GLboolean EXT_texture
;
2745 GLboolean EXT_texture_object
;
2746 GLboolean EXT_texture3D
;
2747 GLboolean EXT_texture_array
;
2748 GLboolean EXT_texture_compression_s3tc
;
2749 GLboolean EXT_texture_env_add
;
2750 GLboolean EXT_texture_env_combine
;
2751 GLboolean EXT_texture_env_dot3
;
2752 GLboolean EXT_texture_filter_anisotropic
;
2753 GLboolean EXT_texture_integer
;
2754 GLboolean EXT_texture_lod_bias
;
2755 GLboolean EXT_texture_mirror_clamp
;
2756 GLboolean EXT_texture_shared_exponent
;
2757 GLboolean EXT_texture_sRGB
;
2758 GLboolean EXT_texture_swizzle
;
2759 GLboolean EXT_transform_feedback
;
2760 GLboolean EXT_timer_query
;
2761 GLboolean EXT_vertex_array
;
2762 GLboolean EXT_vertex_array_bgra
;
2763 GLboolean EXT_vertex_array_set
;
2764 /* vendor extensions */
2765 GLboolean APPLE_client_storage
;
2766 GLboolean APPLE_packed_pixels
;
2767 GLboolean APPLE_vertex_array_object
;
2768 GLboolean APPLE_object_purgeable
;
2769 GLboolean ATI_envmap_bumpmap
;
2770 GLboolean ATI_texture_mirror_once
;
2771 GLboolean ATI_texture_env_combine3
;
2772 GLboolean ATI_fragment_shader
;
2773 GLboolean ATI_separate_stencil
;
2774 GLboolean IBM_rasterpos_clip
;
2775 GLboolean IBM_multimode_draw_arrays
;
2776 GLboolean MESA_pack_invert
;
2777 GLboolean MESA_resize_buffers
;
2778 GLboolean MESA_ycbcr_texture
;
2779 GLboolean MESA_texture_array
;
2780 GLboolean MESA_texture_signed_rgba
;
2781 GLboolean NV_blend_square
;
2782 GLboolean NV_conditional_render
;
2783 GLboolean NV_fragment_program
;
2784 GLboolean NV_fragment_program_option
;
2785 GLboolean NV_light_max_exponent
;
2786 GLboolean NV_point_sprite
;
2787 GLboolean NV_primitive_restart
;
2788 GLboolean NV_texgen_reflection
;
2789 GLboolean NV_texture_env_combine4
;
2790 GLboolean NV_texture_rectangle
;
2791 GLboolean NV_vertex_program
;
2792 GLboolean NV_vertex_program1_1
;
2793 GLboolean OES_read_format
;
2794 GLboolean SGI_texture_color_table
;
2795 GLboolean SGIS_generate_mipmap
;
2796 GLboolean SGIS_texture_edge_clamp
;
2797 GLboolean SGIS_texture_lod
;
2798 GLboolean TDFX_texture_compression_FXT1
;
2800 GLboolean OES_EGL_image
;
2801 GLboolean OES_draw_texture
;
2802 GLboolean EXT_texture_format_BGRA8888
;
2803 /** The extension string */
2804 const GLubyte
*String
;
2805 /** Number of supported extensions */
2811 * A stack of matrices (projection, modelview, color, texture, etc).
2813 struct gl_matrix_stack
2815 GLmatrix
*Top
; /**< points into Stack */
2816 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2817 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2818 GLuint MaxDepth
; /**< size of Stack[] array */
2819 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2824 * \name Bits for image transfer operations
2825 * \sa __struct gl_contextRec::ImageTransferState.
2828 #define IMAGE_SCALE_BIAS_BIT 0x1
2829 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2830 #define IMAGE_MAP_COLOR_BIT 0x4
2831 #define IMAGE_CLAMP_BIT 0x800
2834 /** Pixel Transfer ops */
2835 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2836 IMAGE_SHIFT_OFFSET_BIT | \
2837 IMAGE_MAP_COLOR_BIT)
2840 * \name Bits to indicate what state has changed.
2845 #define _NEW_MODELVIEW 0x1 /**< __struct gl_contextRec::ModelView */
2846 #define _NEW_PROJECTION 0x2 /**< __struct gl_contextRec::Projection */
2847 #define _NEW_TEXTURE_MATRIX 0x4 /**< __struct gl_contextRec::TextureMatrix */
2848 #define _NEW_ACCUM 0x10 /**< __struct gl_contextRec::Accum */
2849 #define _NEW_COLOR 0x20 /**< __struct gl_contextRec::Color */
2850 #define _NEW_DEPTH 0x40 /**< __struct gl_contextRec::Depth */
2851 #define _NEW_EVAL 0x80 /**< __struct gl_contextRec::Eval, __struct gl_contextRec::EvalMap */
2852 #define _NEW_FOG 0x100 /**< __struct gl_contextRec::Fog */
2853 #define _NEW_HINT 0x200 /**< __struct gl_contextRec::Hint */
2854 #define _NEW_LIGHT 0x400 /**< __struct gl_contextRec::Light */
2855 #define _NEW_LINE 0x800 /**< __struct gl_contextRec::Line */
2856 #define _NEW_PIXEL 0x1000 /**< __struct gl_contextRec::Pixel */
2857 #define _NEW_POINT 0x2000 /**< __struct gl_contextRec::Point */
2858 #define _NEW_POLYGON 0x4000 /**< __struct gl_contextRec::Polygon */
2859 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __struct gl_contextRec::PolygonStipple */
2860 #define _NEW_SCISSOR 0x10000 /**< __struct gl_contextRec::Scissor */
2861 #define _NEW_STENCIL 0x20000 /**< __struct gl_contextRec::Stencil */
2862 #define _NEW_TEXTURE 0x40000 /**< __struct gl_contextRec::Texture */
2863 #define _NEW_TRANSFORM 0x80000 /**< __struct gl_contextRec::Transform */
2864 #define _NEW_VIEWPORT 0x100000 /**< __struct gl_contextRec::Viewport */
2865 #define _NEW_PACKUNPACK 0x200000 /**< __struct gl_contextRec::Pack, __struct gl_contextRec::Unpack */
2866 #define _NEW_ARRAY 0x400000 /**< __struct gl_contextRec::Array */
2867 #define _NEW_RENDERMODE 0x800000 /**< __struct gl_contextRec::RenderMode, __struct gl_contextRec::Feedback, __struct gl_contextRec::Select */
2868 #define _NEW_BUFFERS 0x1000000 /**< __struct gl_contextRec::Visual, __struct gl_contextRec::DrawBuffer, */
2869 #define _NEW_MULTISAMPLE 0x2000000 /**< __struct gl_contextRec::Multisample */
2870 #define _NEW_TRACK_MATRIX 0x4000000 /**< __struct gl_contextRec::VertexProgram */
2871 #define _NEW_PROGRAM 0x8000000 /**< __struct gl_contextRec::VertexProgram */
2872 #define _NEW_CURRENT_ATTRIB 0x10000000 /**< __struct gl_contextRec::Current */
2873 #define _NEW_PROGRAM_CONSTANTS 0x20000000
2874 #define _NEW_BUFFER_OBJECT 0x40000000
2880 * \name Bits to track array state changes
2882 * Also used to summarize array enabled.
2885 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2886 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2887 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2888 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2889 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2890 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2891 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2892 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2893 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2894 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2895 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2896 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2897 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2898 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2899 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2900 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2901 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2902 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2903 #define _NEW_ARRAY_ALL 0xffffffff
2906 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2907 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2913 * \name A bunch of flags that we think might be useful to drivers.
2915 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
2918 #define DD_FLATSHADE 0x1
2919 #define DD_SEPARATE_SPECULAR 0x2
2920 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2921 #define DD_TRI_LIGHT_TWOSIDE 0x8
2922 #define DD_TRI_UNFILLED 0x10
2923 #define DD_TRI_SMOOTH 0x20
2924 #define DD_TRI_STIPPLE 0x40
2925 #define DD_TRI_OFFSET 0x80
2926 #define DD_LINE_SMOOTH 0x100
2927 #define DD_LINE_STIPPLE 0x200
2928 #define DD_POINT_SMOOTH 0x400
2929 #define DD_POINT_ATTEN 0x800
2930 #define DD_TRI_TWOSTENCIL 0x1000
2935 * \name Define the state changes under which each of these bits might change
2938 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2939 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2940 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2941 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2942 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2943 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2944 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2945 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2946 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2947 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2948 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2949 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2950 #define _DD_NEW_POINT_SIZE _NEW_POINT
2951 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2956 * Composite state flags
2959 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2965 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2968 #define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL)
2974 /* This has to be included here. */
2979 * Display list flags.
2980 * Strictly this is a tnl-private concept, but it doesn't seem
2981 * worthwhile adding a tnl private structure just to hold this one bit
2984 #define DLIST_DANGLING_REFS 0x1
2987 /** Opaque declaration of display list payload data type */
2988 union gl_dlist_node
;
2992 * Provide a location where information about a display list can be
2993 * collected. Could be extended with driverPrivate structures,
2994 * etc. in the future.
2996 struct gl_display_list
2999 GLbitfield Flags
; /**< DLIST_x flags */
3000 /** The dlist commands are in a linked list of nodes */
3001 union gl_dlist_node
*Head
;
3006 * State used during display list compilation and execution.
3008 struct gl_dlist_state
3010 GLuint CallDepth
; /**< Current recursion calling depth */
3012 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3013 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3014 GLuint CurrentPos
; /**< Index into current block of nodes */
3016 GLvertexformat ListVtxfmt
;
3018 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3019 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3021 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3022 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3024 GLubyte ActiveIndex
;
3025 GLfloat CurrentIndex
;
3027 GLubyte ActiveEdgeFlag
;
3028 GLboolean CurrentEdgeFlag
;
3031 /* State known to have been set by the currently-compiling display
3032 * list. Used to eliminate some redundant state changes.
3039 * Enum for the OpenGL APIs we know about and may support.
3048 * Mesa rendering context.
3050 * This is the central context data structure for Mesa. Almost all
3051 * OpenGL state is contained in this structure.
3052 * Think of this as a base class from which device drivers will derive
3055 * The struct gl_context typedef names this structure.
3059 /** State possibly shared with other contexts in the address space */
3060 struct gl_shared_state
*Shared
;
3062 /** \name API function pointer tables */
3065 struct _glapi_table
*Save
; /**< Display list save functions */
3066 struct _glapi_table
*Exec
; /**< Execute functions */
3067 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3070 struct gl_config Visual
;
3071 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3072 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3073 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3074 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3077 * Device driver function pointer table
3079 struct dd_function_table Driver
;
3081 void *DriverCtx
; /**< Points to device driver context/state */
3083 /** Core/Driver constants */
3084 struct gl_constants Const
;
3086 /** \name The various 4x4 matrix stacks */
3088 struct gl_matrix_stack ModelviewMatrixStack
;
3089 struct gl_matrix_stack ProjectionMatrixStack
;
3090 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3091 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3092 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3095 /** Combined modelview and projection matrix */
3096 GLmatrix _ModelProjectMatrix
;
3098 /** \name Display lists */
3099 struct gl_dlist_state ListState
;
3101 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3102 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3104 /** Extension information */
3105 struct gl_extensions Extensions
;
3108 GLuint VersionMajor
, VersionMinor
;
3109 char *VersionString
;
3111 /** \name State attribute stack (for glPush/PopAttrib) */
3113 GLuint AttribStackDepth
;
3114 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3117 /** \name Renderer attribute groups
3119 * We define a struct for each attribute group to make pushing and popping
3120 * attributes easy. Also it's a good organization.
3123 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3124 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3125 struct gl_current_attrib Current
; /**< Current attributes */
3126 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3127 struct gl_eval_attrib Eval
; /**< Eval attributes */
3128 struct gl_fog_attrib Fog
; /**< Fog attributes */
3129 struct gl_hint_attrib Hint
; /**< Hint attributes */
3130 struct gl_light_attrib Light
; /**< Light attributes */
3131 struct gl_line_attrib Line
; /**< Line attributes */
3132 struct gl_list_attrib List
; /**< List attributes */
3133 struct gl_multisample_attrib Multisample
;
3134 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3135 struct gl_point_attrib Point
; /**< Point attributes */
3136 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3137 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3138 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3139 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3140 struct gl_texture_attrib Texture
; /**< Texture attributes */
3141 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3142 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3145 /** \name Client attribute stack */
3147 GLuint ClientAttribStackDepth
;
3148 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3151 /** \name Client attribute groups */
3153 struct gl_array_attrib Array
; /**< Vertex arrays */
3154 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3155 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3156 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3159 /** \name Other assorted state (not pushed/popped on attribute stack) */
3161 struct gl_pixelmaps PixelMaps
;
3163 struct gl_evaluators EvalMap
; /**< All evaluators */
3164 struct gl_feedback Feedback
; /**< Feedback */
3165 struct gl_selection Select
; /**< Selection */
3167 struct gl_program_state Program
; /**< general program state */
3168 struct gl_vertex_program_state VertexProgram
;
3169 struct gl_fragment_program_state FragmentProgram
;
3170 struct gl_geometry_program_state GeometryProgram
;
3171 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3173 struct gl_shader_state Shader
; /**< GLSL shader object state */
3174 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3176 struct gl_query_state Query
; /**< occlusion, timer queries */
3178 struct gl_transform_feedback TransformFeedback
;
3180 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3181 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3184 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3186 /* GL_EXT_framebuffer_object */
3187 struct gl_renderbuffer
*CurrentRenderbuffer
;
3189 GLenum ErrorValue
; /**< Last error code */
3192 * Recognize and silence repeated error debug messages in buggy apps.
3194 const char *ErrorDebugFmtString
;
3195 GLuint ErrorDebugCount
;
3197 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3198 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3200 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3202 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3204 /** \name Derived state */
3206 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3207 * state validation so they need to always be current.
3209 GLbitfield _TriangleCaps
;
3210 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3211 GLfloat _EyeZDir
[3];
3212 GLfloat _ModelViewInvScale
;
3213 GLboolean _NeedEyeCoords
;
3214 GLboolean _ForceEyeCoords
;
3216 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3218 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3219 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3222 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3224 /** \name For debugging/development only */
3226 GLboolean FirstTimeCurrent
;
3229 /** Dither disable via MESA_NO_DITHER env var */
3232 /** software compression/decompression supported or not */
3233 GLboolean Mesa_DXTn
;
3236 * Use dp4 (rather than mul/mad) instructions for position
3239 GLboolean mvp_with_dp4
;
3242 * \name Hooks for module contexts.
3244 * These will eventually live in the driver or elsewhere.
3247 void *swrast_context
;
3248 void *swsetup_context
;
3249 void *swtnl_context
;
3251 struct st_context
*st
;
3257 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
3258 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
3262 extern int MESA_VERBOSE
;
3263 extern int MESA_DEBUG_FLAGS
;
3264 # define MESA_FUNCTION __FUNCTION__
3266 # define MESA_VERBOSE 0
3267 # define MESA_DEBUG_FLAGS 0
3268 # define MESA_FUNCTION "a function"
3275 /** The MESA_VERBOSE var is a bitmask of these flags */
3278 VERBOSE_VARRAY
= 0x0001,
3279 VERBOSE_TEXTURE
= 0x0002,
3280 VERBOSE_MATERIAL
= 0x0004,
3281 VERBOSE_PIPELINE
= 0x0008,
3282 VERBOSE_DRIVER
= 0x0010,
3283 VERBOSE_STATE
= 0x0020,
3284 VERBOSE_API
= 0x0040,
3285 VERBOSE_DISPLAY_LIST
= 0x0100,
3286 VERBOSE_LIGHTING
= 0x0200,
3287 VERBOSE_PRIMS
= 0x0400,
3288 VERBOSE_VERTS
= 0x0800,
3289 VERBOSE_DISASSEM
= 0x1000,
3290 VERBOSE_DRAW
= 0x2000,
3291 VERBOSE_SWAPBUFFERS
= 0x4000
3295 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3298 DEBUG_ALWAYS_FLUSH
= 0x1
3303 #endif /* MTYPES_H */