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/compiler.h"
40 #include "main/mfeatures.h"
41 #include "glapi/glapi.h"
42 #include "math/m_matrix.h" /* GLmatrix */
43 #include "main/simple_list.h" /* struct simple_node */
47 * Must be simply different than GL_VERTEX_PROGRAM
48 * and GL_FRAGMENT_PROGRAM_ARB
49 * FIXME: this will have to be a real GL extension
51 #define MESA_GEOMETRY_PROGRAM 0x9999
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
;
127 typedef struct __GLcontextRec GLcontext
;
128 typedef struct __GLcontextModesRec GLvisual
;
129 typedef struct gl_framebuffer GLframebuffer
;
135 * Indexes for vertex program attributes.
136 * GL_NV_vertex_program aliases generic attributes over the conventional
137 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
138 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
139 * generic attributes are distinct/separate).
144 VERT_ATTRIB_WEIGHT
= 1,
145 VERT_ATTRIB_NORMAL
= 2,
146 VERT_ATTRIB_COLOR0
= 3,
147 VERT_ATTRIB_COLOR1
= 4,
149 VERT_ATTRIB_COLOR_INDEX
= 6,
150 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
151 VERT_ATTRIB_EDGEFLAG
= 7,
152 VERT_ATTRIB_TEX0
= 8,
153 VERT_ATTRIB_TEX1
= 9,
154 VERT_ATTRIB_TEX2
= 10,
155 VERT_ATTRIB_TEX3
= 11,
156 VERT_ATTRIB_TEX4
= 12,
157 VERT_ATTRIB_TEX5
= 13,
158 VERT_ATTRIB_TEX6
= 14,
159 VERT_ATTRIB_TEX7
= 15,
160 VERT_ATTRIB_GENERIC0
= 16,
161 VERT_ATTRIB_GENERIC1
= 17,
162 VERT_ATTRIB_GENERIC2
= 18,
163 VERT_ATTRIB_GENERIC3
= 19,
164 VERT_ATTRIB_GENERIC4
= 20,
165 VERT_ATTRIB_GENERIC5
= 21,
166 VERT_ATTRIB_GENERIC6
= 22,
167 VERT_ATTRIB_GENERIC7
= 23,
168 VERT_ATTRIB_GENERIC8
= 24,
169 VERT_ATTRIB_GENERIC9
= 25,
170 VERT_ATTRIB_GENERIC10
= 26,
171 VERT_ATTRIB_GENERIC11
= 27,
172 VERT_ATTRIB_GENERIC12
= 28,
173 VERT_ATTRIB_GENERIC13
= 29,
174 VERT_ATTRIB_GENERIC14
= 30,
175 VERT_ATTRIB_GENERIC15
= 31,
180 * Bitflags for vertex attributes.
181 * These are used in bitfields in many places.
184 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
185 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
186 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
187 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
188 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
189 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
190 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
191 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
192 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
193 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
194 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
195 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
196 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
197 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
198 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
199 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
200 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
201 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
202 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
203 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
204 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
205 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
206 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
207 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
208 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
209 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
210 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
211 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
212 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
213 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
214 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
215 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
217 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
218 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
223 * Indexes for vertex program result attributes
227 VERT_RESULT_HPOS
= 0,
228 VERT_RESULT_COL0
= 1,
229 VERT_RESULT_COL1
= 2,
230 VERT_RESULT_FOGC
= 3,
231 VERT_RESULT_TEX0
= 4,
232 VERT_RESULT_TEX1
= 5,
233 VERT_RESULT_TEX2
= 6,
234 VERT_RESULT_TEX3
= 7,
235 VERT_RESULT_TEX4
= 8,
236 VERT_RESULT_TEX5
= 9,
237 VERT_RESULT_TEX6
= 10,
238 VERT_RESULT_TEX7
= 11,
239 VERT_RESULT_PSIZ
= 12,
240 VERT_RESULT_BFC0
= 13,
241 VERT_RESULT_BFC1
= 14,
242 VERT_RESULT_EDGE
= 15,
243 VERT_RESULT_VAR0
= 16, /**< shader varying */
244 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
248 /*********************************************/
251 * Indexes for geometry program attributes.
255 GEOM_ATTRIB_POSITION
= 0,
256 GEOM_ATTRIB_COLOR0
= 1,
257 GEOM_ATTRIB_COLOR1
= 2,
258 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
259 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
260 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
261 GEOM_ATTRIB_POINT_SIZE
= 6,
262 GEOM_ATTRIB_CLIP_VERTEX
= 7,
263 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
264 GEOM_ATTRIB_TEX_COORD
= 9,
266 GEOM_ATTRIB_VAR0
= 16,
267 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
271 * Bitflags for geometry attributes.
272 * These are used in bitfields in many places.
275 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
276 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
277 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
278 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
279 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
280 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
281 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
282 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
283 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
284 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
285 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
287 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
292 * Indexes for geometry program result attributes
297 GEOM_RESULT_COL0
= 1,
298 GEOM_RESULT_COL1
= 2,
299 GEOM_RESULT_SCOL0
= 3,
300 GEOM_RESULT_SCOL1
= 4,
301 GEOM_RESULT_FOGC
= 5,
302 GEOM_RESULT_TEX0
= 6,
303 GEOM_RESULT_TEX1
= 7,
304 GEOM_RESULT_TEX2
= 8,
305 GEOM_RESULT_TEX3
= 9,
306 GEOM_RESULT_TEX4
= 10,
307 GEOM_RESULT_TEX5
= 11,
308 GEOM_RESULT_TEX6
= 12,
309 GEOM_RESULT_TEX7
= 13,
310 GEOM_RESULT_PSIZ
= 14,
311 GEOM_RESULT_CLPV
= 15,
312 GEOM_RESULT_PRID
= 16,
313 GEOM_RESULT_LAYR
= 17,
314 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
315 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
316 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
321 * Indexes for fragment program input attributes.
325 FRAG_ATTRIB_WPOS
= 0,
326 FRAG_ATTRIB_COL0
= 1,
327 FRAG_ATTRIB_COL1
= 2,
328 FRAG_ATTRIB_FOGC
= 3,
329 FRAG_ATTRIB_TEX0
= 4,
330 FRAG_ATTRIB_TEX1
= 5,
331 FRAG_ATTRIB_TEX2
= 6,
332 FRAG_ATTRIB_TEX3
= 7,
333 FRAG_ATTRIB_TEX4
= 8,
334 FRAG_ATTRIB_TEX5
= 9,
335 FRAG_ATTRIB_TEX6
= 10,
336 FRAG_ATTRIB_TEX7
= 11,
337 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
338 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
339 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
340 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
344 * Bitflags for fragment program input attributes.
347 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
348 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
349 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
350 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
351 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
352 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
353 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
354 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
355 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
356 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
357 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
358 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
359 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
360 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
361 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
363 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
364 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
366 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
378 * Fragment program results
382 FRAG_RESULT_DEPTH
= 0,
383 FRAG_RESULT_COLOR
= 1,
384 FRAG_RESULT_DATA0
= 2,
385 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
390 * Indexes for all renderbuffers
394 /* the four standard color buffers */
402 /* optional aux buffer */
404 /* generic renderbuffers */
417 * Bit flags for all renderbuffers
419 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
420 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
421 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
422 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
423 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
424 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
425 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
426 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
427 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
428 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
429 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
430 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
431 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
432 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
433 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
434 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
435 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
436 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
437 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
440 * Mask of all the color buffer bits (but not accum).
442 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
443 BUFFER_BIT_BACK_LEFT | \
444 BUFFER_BIT_FRONT_RIGHT | \
445 BUFFER_BIT_BACK_RIGHT | \
447 BUFFER_BIT_COLOR0 | \
448 BUFFER_BIT_COLOR1 | \
449 BUFFER_BIT_COLOR2 | \
450 BUFFER_BIT_COLOR3 | \
451 BUFFER_BIT_COLOR4 | \
452 BUFFER_BIT_COLOR5 | \
453 BUFFER_BIT_COLOR6 | \
457 /** The pixel transfer path has three color tables: */
460 COLORTABLE_PRECONVOLUTION
,
461 COLORTABLE_POSTCONVOLUTION
,
462 COLORTABLE_POSTCOLORMATRIX
,
464 } gl_colortable_index
;
468 * Data structure for color tables
470 struct gl_color_table
472 GLenum InternalFormat
; /**< The user-specified format */
473 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
474 GLuint Size
; /**< number of entries in table */
475 GLfloat
*TableF
; /**< Color table, floating point values */
476 GLubyte
*TableUB
; /**< Color table, ubyte values */
481 GLubyte LuminanceSize
;
482 GLubyte IntensitySize
;
487 * \name Bit flags used for updating material values.
490 #define MAT_ATTRIB_FRONT_AMBIENT 0
491 #define MAT_ATTRIB_BACK_AMBIENT 1
492 #define MAT_ATTRIB_FRONT_DIFFUSE 2
493 #define MAT_ATTRIB_BACK_DIFFUSE 3
494 #define MAT_ATTRIB_FRONT_SPECULAR 4
495 #define MAT_ATTRIB_BACK_SPECULAR 5
496 #define MAT_ATTRIB_FRONT_EMISSION 6
497 #define MAT_ATTRIB_BACK_EMISSION 7
498 #define MAT_ATTRIB_FRONT_SHININESS 8
499 #define MAT_ATTRIB_BACK_SHININESS 9
500 #define MAT_ATTRIB_FRONT_INDEXES 10
501 #define MAT_ATTRIB_BACK_INDEXES 11
502 #define MAT_ATTRIB_MAX 12
504 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
505 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
506 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
507 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
508 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
509 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
511 #define MAT_INDEX_AMBIENT 0
512 #define MAT_INDEX_DIFFUSE 1
513 #define MAT_INDEX_SPECULAR 2
515 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
516 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
517 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
518 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
519 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
520 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
521 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
522 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
523 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
524 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
525 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
526 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
529 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
530 MAT_BIT_FRONT_AMBIENT | \
531 MAT_BIT_FRONT_DIFFUSE | \
532 MAT_BIT_FRONT_SPECULAR | \
533 MAT_BIT_FRONT_SHININESS | \
534 MAT_BIT_FRONT_INDEXES)
536 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
537 MAT_BIT_BACK_AMBIENT | \
538 MAT_BIT_BACK_DIFFUSE | \
539 MAT_BIT_BACK_SPECULAR | \
540 MAT_BIT_BACK_SHININESS | \
541 MAT_BIT_BACK_INDEXES)
543 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
547 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
548 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
551 * Material shininess lookup table.
555 struct gl_shine_tab
*next
, *prev
;
556 GLfloat tab
[SHINE_TABLE_SIZE
+1];
563 * Light source state.
567 struct gl_light
*next
; /**< double linked list with sentinel */
568 struct gl_light
*prev
;
570 GLfloat Ambient
[4]; /**< ambient color */
571 GLfloat Diffuse
[4]; /**< diffuse color */
572 GLfloat Specular
[4]; /**< specular color */
573 GLfloat EyePosition
[4]; /**< position in eye coordinates */
574 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
575 GLfloat SpotExponent
;
576 GLfloat SpotCutoff
; /**< in degrees */
577 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
578 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
579 GLfloat ConstantAttenuation
;
580 GLfloat LinearAttenuation
;
581 GLfloat QuadraticAttenuation
;
582 GLboolean Enabled
; /**< On/off flag */
585 * \name Derived fields
588 GLbitfield _Flags
; /**< State */
590 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
591 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
592 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
593 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
594 GLfloat _VP_inf_spot_attenuation
;
596 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
597 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
598 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
599 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
600 GLfloat _dli
; /**< CI diffuse light intensity */
601 GLfloat _sli
; /**< CI specular light intensity */
611 GLfloat Ambient
[4]; /**< ambient color */
612 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
613 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
614 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
615 * or GL_SEPARATE_SPECULAR_COLOR */
624 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
629 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
631 struct gl_accum_attrib
633 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
638 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
640 struct gl_colorbuffer_attrib
642 GLuint ClearIndex
; /**< Index to use for glClear */
643 GLclampf ClearColor
[4]; /**< Color to use for glClear */
645 GLuint IndexMask
; /**< Color index write mask */
646 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4];/**< Each flag is 0xff or 0x0 */
648 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
651 * \name alpha testing
654 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
655 GLenum AlphaFunc
; /**< Alpha test function */
656 GLclampf AlphaRef
; /**< Alpha reference value */
663 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
664 GLenum BlendSrcRGB
; /**< Blending source operator */
665 GLenum BlendDstRGB
; /**< Blending destination operator */
666 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
667 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
668 GLenum BlendEquationRGB
; /**< Blending equation */
669 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
670 GLfloat BlendColor
[4]; /**< Blending color */
677 GLenum LogicOp
; /**< Logic operator */
678 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
679 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
680 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
683 GLboolean DitherFlag
; /**< Dither enable flag */
685 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
686 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
691 * Current attribute group (GL_CURRENT_BIT).
693 struct gl_current_attrib
696 * \name Current vertex attributes.
697 * \note Values are valid only after FLUSH_VERTICES has been called.
698 * \note Index and Edgeflag current values are stored as floats in the
699 * SIX and SEVEN attribute slots.
701 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
704 * \name Current raster position attributes (always valid).
705 * \note This set of attributes is very similar to the SWvertex struct.
708 GLfloat RasterPos
[4];
709 GLfloat RasterDistance
;
710 GLfloat RasterColor
[4];
711 GLfloat RasterSecondaryColor
[4];
712 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
713 GLboolean RasterPosValid
;
719 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
721 struct gl_depthbuffer_attrib
723 GLenum Func
; /**< Function for depth buffer compare */
724 GLclampd Clear
; /**< Value to clear depth buffer to */
725 GLboolean Test
; /**< Depth buffering enabled flag */
726 GLboolean Mask
; /**< Depth buffer writable? */
727 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
728 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
733 * Evaluator attribute group (GL_EVAL_BIT).
735 struct gl_eval_attrib
741 GLboolean Map1Color4
;
743 GLboolean Map1Normal
;
744 GLboolean Map1TextureCoord1
;
745 GLboolean Map1TextureCoord2
;
746 GLboolean Map1TextureCoord3
;
747 GLboolean Map1TextureCoord4
;
748 GLboolean Map1Vertex3
;
749 GLboolean Map1Vertex4
;
750 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
751 GLboolean Map2Color4
;
753 GLboolean Map2Normal
;
754 GLboolean Map2TextureCoord1
;
755 GLboolean Map2TextureCoord2
;
756 GLboolean Map2TextureCoord3
;
757 GLboolean Map2TextureCoord4
;
758 GLboolean Map2Vertex3
;
759 GLboolean Map2Vertex4
;
760 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
761 GLboolean AutoNormal
;
765 * \name Map Grid endpoints and divisions and calculated du values
769 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
770 GLint MapGrid2un
, MapGrid2vn
;
771 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
772 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
778 * Fog attribute group (GL_FOG_BIT).
782 GLboolean Enabled
; /**< Fog enabled flag */
783 GLfloat Color
[4]; /**< Fog color */
784 GLfloat Density
; /**< Density >= 0.0 */
785 GLfloat Start
; /**< Start distance in eye coords */
786 GLfloat End
; /**< End distance in eye coords */
787 GLfloat Index
; /**< Fog index */
788 GLenum Mode
; /**< Fog mode */
789 GLboolean ColorSumEnabled
;
790 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
791 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
796 * Hint attribute group (GL_HINT_BIT).
798 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
800 struct gl_hint_attrib
802 GLenum PerspectiveCorrection
;
805 GLenum PolygonSmooth
;
807 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
808 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
809 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
810 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
815 * Histogram attributes.
817 struct gl_histogram_attrib
819 GLuint Width
; /**< number of table entries */
820 GLint Format
; /**< GL_ALPHA, GL_RGB, etc */
821 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /**< the histogram */
822 GLboolean Sink
; /**< terminate image transfer? */
823 GLubyte RedSize
; /**< Bits per counter */
827 GLubyte LuminanceSize
;
832 * Color Min/max state.
834 struct gl_minmax_attrib
838 GLfloat Min
[4], Max
[4]; /**< RGBA */
843 * Image convolution state.
845 struct gl_convolution_attrib
848 GLenum InternalFormat
;
851 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
859 #define LIGHT_SPOT 0x1
860 #define LIGHT_LOCAL_VIEWER 0x2
861 #define LIGHT_POSITIONAL 0x4
862 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
867 * Lighting attribute group (GL_LIGHT_BIT).
869 struct gl_light_attrib
871 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
872 struct gl_lightmodel Model
; /**< Lighting model */
875 * Must flush FLUSH_VERTICES before referencing:
878 struct gl_material Material
; /**< Includes front & back values */
881 GLboolean Enabled
; /**< Lighting enabled flag */
882 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
883 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
884 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
885 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
886 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
887 GLboolean ColorMaterialEnabled
;
888 GLenum ClampVertexColor
;
890 struct gl_light EnabledList
; /**< List sentinel */
893 * Derived state for optimizations:
896 GLboolean _NeedEyeCoords
;
897 GLboolean _NeedVertices
; /**< Use fast shader? */
898 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
899 GLfloat _BaseColor
[2][3];
905 * Line attribute group (GL_LINE_BIT).
907 struct gl_line_attrib
909 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
910 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
911 GLushort StipplePattern
; /**< Stipple pattern */
912 GLint StippleFactor
; /**< Stipple repeat factor */
913 GLfloat Width
; /**< Line width */
918 * Display list attribute group (GL_LIST_BIT).
920 struct gl_list_attrib
927 * Multisample attribute group (GL_MULTISAMPLE_BIT).
929 struct gl_multisample_attrib
932 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
933 GLboolean SampleAlphaToCoverage
;
934 GLboolean SampleAlphaToOne
;
935 GLboolean SampleCoverage
;
936 GLfloat SampleCoverageValue
;
937 GLboolean SampleCoverageInvert
;
942 * A pixelmap (see glPixelMap)
947 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
948 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
953 * Collection of all pixelmaps
957 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
958 struct gl_pixelmap GtoG
;
959 struct gl_pixelmap BtoB
;
960 struct gl_pixelmap AtoA
;
961 struct gl_pixelmap ItoR
;
962 struct gl_pixelmap ItoG
;
963 struct gl_pixelmap ItoB
;
964 struct gl_pixelmap ItoA
;
965 struct gl_pixelmap ItoI
;
966 struct gl_pixelmap StoS
;
971 * Pixel attribute group (GL_PIXEL_MODE_BIT).
973 struct gl_pixel_attrib
975 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
977 /*--- Begin Pixel Transfer State ---*/
978 /* Fields are in the order in which they're applied... */
980 /** Scale & Bias (index shift, offset) */
982 GLfloat RedBias
, RedScale
;
983 GLfloat GreenBias
, GreenScale
;
984 GLfloat BlueBias
, BlueScale
;
985 GLfloat AlphaBias
, AlphaScale
;
986 GLfloat DepthBias
, DepthScale
;
987 GLint IndexShift
, IndexOffset
;
991 /* Note: actual pixel maps are not part of this attrib group */
992 GLboolean MapColorFlag
;
993 GLboolean MapStencilFlag
;
995 /* There are multiple color table stages: */
996 GLboolean ColorTableEnabled
[COLORTABLE_MAX
];
997 GLfloat ColorTableScale
[COLORTABLE_MAX
][4]; /**< RGBA */
998 GLfloat ColorTableBias
[COLORTABLE_MAX
][4]; /**< RGBA */
1000 /* Convolution (GL_EXT_convolution) */
1001 GLboolean Convolution1DEnabled
;
1002 GLboolean Convolution2DEnabled
;
1003 GLboolean Separable2DEnabled
;
1004 GLfloat ConvolutionBorderColor
[3][4]; /**< RGBA */
1005 GLenum ConvolutionBorderMode
[3];
1006 GLfloat ConvolutionFilterScale
[3][4]; /**< RGBA */
1007 GLfloat ConvolutionFilterBias
[3][4]; /**< RGBA */
1008 GLfloat PostConvolutionScale
[4]; /**< RGBA */
1009 GLfloat PostConvolutionBias
[4]; /**< RGBA */
1011 /* Color matrix (GL_SGI_color_matrix) */
1012 /* Note: the color matrix is not part of this attrib group */
1013 GLfloat PostColorMatrixScale
[4]; /**< RGBA */
1014 GLfloat PostColorMatrixBias
[4]; /**< RGBA */
1016 /* Histogram & minmax (GL_EXT_histogram) */
1017 /* Note: histogram and minmax data are not part of this attrib group */
1018 GLboolean HistogramEnabled
;
1019 GLboolean MinMaxEnabled
;
1021 /*--- End Pixel Transfer State ---*/
1024 GLfloat ZoomX
, ZoomY
;
1026 /** GL_SGI_texture_color_table */
1027 GLfloat TextureColorTableScale
[4]; /**< RGBA */
1028 GLfloat TextureColorTableBias
[4]; /**< RGBA */
1033 * Point attribute group (GL_POINT_BIT).
1035 struct gl_point_attrib
1037 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1038 GLfloat Size
; /**< User-specified point size */
1039 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1040 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1041 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1042 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1043 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1044 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1045 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1046 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1051 * Polygon attribute group (GL_POLYGON_BIT).
1053 struct gl_polygon_attrib
1055 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1056 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1057 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1058 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1059 GLboolean CullFlag
; /**< Culling on/off flag */
1060 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1061 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1062 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1063 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1064 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1065 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1066 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1067 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1072 * Scissor attributes (GL_SCISSOR_BIT).
1074 struct gl_scissor_attrib
1076 GLboolean Enabled
; /**< Scissor test enabled? */
1077 GLint X
, Y
; /**< Lower left corner of box */
1078 GLsizei Width
, Height
; /**< Size of box */
1083 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1085 * Three sets of stencil data are tracked so that OpenGL 2.0,
1086 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1087 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1088 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1089 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1090 * GL_EXT_stencil_two_side GL_BACK state.
1092 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1093 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1095 * The derived value \c _TestTwoSide is set when the front-face and back-face
1096 * stencil state are different.
1098 struct gl_stencil_attrib
1100 GLboolean Enabled
; /**< Enabled flag */
1101 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1102 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1103 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1104 GLboolean _TestTwoSide
;
1105 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1106 GLenum Function
[3]; /**< Stencil function */
1107 GLenum FailFunc
[3]; /**< Fail function */
1108 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1109 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1110 GLint Ref
[3]; /**< Reference value */
1111 GLuint ValueMask
[3]; /**< Value mask */
1112 GLuint WriteMask
[3]; /**< Write mask */
1113 GLuint Clear
; /**< Clear value */
1118 * An index for each type of texture object. These correspond to the GL
1119 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1120 * Note: the order is from highest priority to lowest priority.
1124 TEXTURE_2D_ARRAY_INDEX
,
1125 TEXTURE_1D_ARRAY_INDEX
,
1136 * Bit flags for each type of texture object
1137 * Used for Texture.Unit[]._ReallyEnabled flags.
1140 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1141 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1142 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1143 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1144 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1145 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1146 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1151 * TexGenEnabled flags.
1158 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1163 * Bit flag versions of the corresponding GL_ constants.
1166 #define TEXGEN_SPHERE_MAP 0x1
1167 #define TEXGEN_OBJ_LINEAR 0x2
1168 #define TEXGEN_EYE_LINEAR 0x4
1169 #define TEXGEN_REFLECTION_MAP_NV 0x8
1170 #define TEXGEN_NORMAL_MAP_NV 0x10
1172 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1173 TEXGEN_REFLECTION_MAP_NV | \
1174 TEXGEN_NORMAL_MAP_NV)
1175 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1176 TEXGEN_REFLECTION_MAP_NV | \
1177 TEXGEN_NORMAL_MAP_NV | \
1183 /** Tex-gen enabled for texture unit? */
1184 #define ENABLE_TEXGEN(unit) (1 << (unit))
1186 /** Non-identity texture matrix for texture unit? */
1187 #define ENABLE_TEXMAT(unit) (1 << (unit))
1191 * Texel fetch function prototype. We use texel fetch functions to
1192 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1193 * texture images. These functions help to isolate us from the gritty
1194 * details of all the various texture image encodings.
1196 * \param texImage texture image.
1197 * \param col texel column.
1198 * \param row texel row.
1199 * \param img texel image level/layer.
1200 * \param texelOut output texel (up to 4 GLchans)
1202 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1203 GLint col
, GLint row
, GLint img
,
1207 * As above, but returns floats.
1208 * Used for depth component images and for upcoming signed/float
1211 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1212 GLint col
, GLint row
, GLint img
,
1213 GLfloat
*texelOut
);
1216 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1217 GLint col
, GLint row
, GLint img
,
1222 * Texture image state. Describes the dimensions of a texture image,
1223 * the texel format and pointers to Texel Fetch functions.
1225 struct gl_texture_image
1227 GLint InternalFormat
; /**< Internal format as given by the user */
1228 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1229 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1230 * GL_INTENSITY, GL_COLOR_INDEX,
1231 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1232 * only. Used for choosing TexEnv arithmetic.
1234 GLuint TexFormat
; /**< The actual format: MESA_FORMAT_x */
1236 GLuint Border
; /**< 0 or 1 */
1237 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1238 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1239 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1240 GLuint Width2
; /**< = Width - 2*Border */
1241 GLuint Height2
; /**< = Height - 2*Border */
1242 GLuint Depth2
; /**< = Depth - 2*Border */
1243 GLuint WidthLog2
; /**< = log2(Width2) */
1244 GLuint HeightLog2
; /**< = log2(Height2) */
1245 GLuint DepthLog2
; /**< = log2(Depth2) */
1246 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1247 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1248 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1249 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1250 GLboolean IsClientData
; /**< Data owned by client? */
1251 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1253 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1255 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1256 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1258 GLuint RowStride
; /**< Padded width in units of texels */
1259 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1260 each 2D slice in 'Data', in texels */
1261 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1264 * \name For device driver:
1267 void *DriverData
; /**< Arbitrary device driver data */
1273 * Indexes for cube map faces.
1288 * Texture object state. Contains the array of mipmap images, border color,
1289 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1292 struct gl_texture_object
1294 _glthread_Mutex Mutex
; /**< for thread safety */
1295 GLint RefCount
; /**< reference count */
1296 GLuint Name
; /**< the user-visible texture object ID */
1297 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1298 GLfloat Priority
; /**< in [0,1] */
1303 } BorderColor
; /**< Interpreted according to texture format */
1304 GLenum WrapS
; /**< S-axis texture image wrap mode */
1305 GLenum WrapT
; /**< T-axis texture image wrap mode */
1306 GLenum WrapR
; /**< R-axis texture image wrap mode */
1307 GLenum MinFilter
; /**< minification filter */
1308 GLenum MagFilter
; /**< magnification filter */
1309 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1310 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1311 GLfloat LodBias
; /**< OpenGL 1.4 */
1312 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1313 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1314 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1315 GLenum CompareMode
; /**< GL_ARB_shadow */
1316 GLenum CompareFunc
; /**< GL_ARB_shadow */
1317 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1318 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1319 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1320 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1321 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1322 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1323 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1324 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1325 GLboolean _Complete
; /**< Is texture object complete? */
1326 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1327 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1329 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1330 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1332 /** GL_EXT_paletted_texture */
1333 struct gl_color_table Palette
;
1336 * \name For device driver.
1337 * Note: instead of attaching driver data to this pointer, it's preferable
1338 * to instead use this struct as a base class for your own texture object
1339 * class. Driver->NewTextureObject() can be used to implement the
1342 void *DriverData
; /**< Arbitrary device driver data */
1346 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1347 #define MAX_COMBINER_TERMS 4
1351 * Texture combine environment state.
1353 struct gl_tex_env_combine_state
1355 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1356 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1357 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1358 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1359 GLenum SourceA
[MAX_COMBINER_TERMS
];
1360 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1361 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1362 GLenum OperandA
[MAX_COMBINER_TERMS
];
1363 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1364 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1365 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1366 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1371 * Texture coord generation state.
1375 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1376 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1377 GLfloat ObjectPlane
[4];
1378 GLfloat EyePlane
[4];
1383 * Texture unit state. Contains enable flags, texture environment/function/
1384 * combiners, texgen state, pointers to current texture objects and
1385 * post-filter color tables.
1387 struct gl_texture_unit
1389 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1390 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1392 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1393 GLfloat EnvColor
[4];
1395 struct gl_texgen GenS
;
1396 struct gl_texgen GenT
;
1397 struct gl_texgen GenR
;
1398 struct gl_texgen GenQ
;
1399 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1400 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1402 GLfloat LodBias
; /**< for biasing mipmap levels */
1404 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1407 * \name GL_EXT_texture_env_combine
1409 struct gl_tex_env_combine_state Combine
;
1412 * Derived state based on \c EnvMode and the \c BaseFormat of the
1413 * currently enabled texture.
1415 struct gl_tex_env_combine_state _EnvMode
;
1418 * Currently enabled combiner state. This will point to either
1419 * \c Combine or \c _EnvMode.
1421 struct gl_tex_env_combine_state
*_CurrentCombine
;
1423 /** Current texture object pointers */
1424 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1426 /** Points to highest priority, complete and enabled texture object */
1427 struct gl_texture_object
*_Current
;
1429 /** GL_SGI_texture_color_table */
1431 struct gl_color_table ColorTable
;
1432 struct gl_color_table ProxyColorTable
;
1433 GLboolean ColorTableEnabled
;
1439 * Texture attribute group (GL_TEXTURE_BIT).
1441 struct gl_texture_attrib
1443 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1444 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1446 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1448 /** GL_ARB_seamless_cubemap */
1449 GLboolean CubeMapSeamless
;
1451 /** GL_EXT_shared_texture_palette */
1452 GLboolean SharedPalette
;
1453 struct gl_color_table Palette
;
1455 /** Texture units/samplers used by vertex or fragment texturing */
1456 GLbitfield _EnabledUnits
;
1458 /** Texture coord units/sets used for fragment texturing */
1459 GLbitfield _EnabledCoordUnits
;
1461 /** Texture coord units that have texgen enabled */
1462 GLbitfield _TexGenEnabled
;
1464 /** Texture coord units that have non-identity matrices */
1465 GLbitfield _TexMatEnabled
;
1467 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1468 GLbitfield _GenFlags
;
1473 * Transformation attribute group (GL_TRANSFORM_BIT).
1475 struct gl_transform_attrib
1477 GLenum MatrixMode
; /**< Matrix mode */
1478 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1479 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1480 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1481 GLboolean Normalize
; /**< Normalize all normals? */
1482 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1483 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1484 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1486 GLboolean CullVertexFlag
; /**< True if GL_CULL_VERTEX_EXT is enabled */
1487 GLfloat CullEyePos
[4];
1488 GLfloat CullObjPos
[4];
1493 * Viewport attribute group (GL_VIEWPORT_BIT).
1495 struct gl_viewport_attrib
1497 GLint X
, Y
; /**< position */
1498 GLsizei Width
, Height
; /**< size */
1499 GLfloat Near
, Far
; /**< Depth buffer range */
1500 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1505 * GL_ARB_vertex/pixel_buffer_object buffer object
1507 struct gl_buffer_object
1509 _glthread_Mutex Mutex
;
1512 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1513 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1514 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1515 /** Fields describing a mapped buffer */
1517 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1518 GLvoid
*Pointer
; /**< User-space address of mapping */
1519 GLintptr Offset
; /**< Mapped offset */
1520 GLsizeiptr Length
; /**< Mapped length */
1522 GLboolean Written
; /**< Ever written to? (for debugging) */
1523 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1528 * Client pixel packing/unpacking attributes
1530 struct gl_pixelstore_attrib
1538 GLboolean SwapBytes
;
1540 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1541 GLboolean Invert
; /**< GL_MESA_pack_invert */
1542 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1547 * Client vertex array attributes
1549 struct gl_client_array
1551 GLint Size
; /**< components per element (1,2,3,4) */
1552 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1553 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1554 GLsizei Stride
; /**< user-specified stride */
1555 GLsizei StrideB
; /**< actual stride in bytes */
1556 const GLubyte
*Ptr
; /**< Points to array data */
1557 GLboolean Enabled
; /**< Enabled flag is a boolean */
1558 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1559 GLuint _ElementSize
; /**< size of each element in bytes */
1561 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1562 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1567 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1568 * extension, but a nice encapsulation in any case.
1570 struct gl_array_object
1572 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1576 _glthread_Mutex Mutex
;
1577 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1579 /** Conventional vertex arrays */
1581 struct gl_client_array Vertex
;
1582 struct gl_client_array Weight
;
1583 struct gl_client_array Normal
;
1584 struct gl_client_array Color
;
1585 struct gl_client_array SecondaryColor
;
1586 struct gl_client_array FogCoord
;
1587 struct gl_client_array Index
;
1588 struct gl_client_array EdgeFlag
;
1589 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1590 struct gl_client_array PointSize
;
1594 * Generic arrays for vertex programs/shaders.
1595 * For NV vertex programs, these attributes alias and take priority
1596 * over the conventional attribs above. For ARB vertex programs and
1597 * GLSL vertex shaders, these attributes are separate.
1599 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1601 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1602 GLbitfield _Enabled
;
1605 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1606 * we can determine the max legal (in bounds) glDrawElements array index.
1613 * Vertex array state
1615 struct gl_array_attrib
1617 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1618 struct gl_array_object
*ArrayObj
;
1620 /** The default vertex array object */
1621 struct gl_array_object
*DefaultArrayObj
;
1623 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1624 struct _mesa_HashTable
*Objects
;
1626 GLint ActiveTexture
; /**< Client Active Texture */
1627 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1628 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1630 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1631 GLboolean PrimitiveRestart
;
1632 GLuint RestartIndex
;
1634 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1636 #if FEATURE_ARB_vertex_buffer_object
1637 struct gl_buffer_object
*ArrayBufferObj
;
1638 struct gl_buffer_object
*ElementArrayBufferObj
;
1644 * Feedback buffer state
1649 GLbitfield _Mask
; /**< FB_* bits */
1657 * Selection buffer state
1661 GLuint
*Buffer
; /**< selection buffer */
1662 GLuint BufferSize
; /**< size of the selection buffer */
1663 GLuint BufferCount
; /**< number of values in the selection buffer */
1664 GLuint Hits
; /**< number of records in the selection buffer */
1665 GLuint NameStackDepth
; /**< name stack depth */
1666 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1667 GLboolean HitFlag
; /**< hit flag */
1668 GLfloat HitMinZ
; /**< minimum hit depth */
1669 GLfloat HitMaxZ
; /**< maximum hit depth */
1674 * 1-D Evaluator control points
1678 GLuint Order
; /**< Number of control points */
1679 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1680 GLfloat
*Points
; /**< Points to contiguous control points */
1685 * 2-D Evaluator control points
1689 GLuint Uorder
; /**< Number of control points in U dimension */
1690 GLuint Vorder
; /**< Number of control points in V dimension */
1693 GLfloat
*Points
; /**< Points to contiguous control points */
1698 * All evaluator control point state
1700 struct gl_evaluators
1706 struct gl_1d_map Map1Vertex3
;
1707 struct gl_1d_map Map1Vertex4
;
1708 struct gl_1d_map Map1Index
;
1709 struct gl_1d_map Map1Color4
;
1710 struct gl_1d_map Map1Normal
;
1711 struct gl_1d_map Map1Texture1
;
1712 struct gl_1d_map Map1Texture2
;
1713 struct gl_1d_map Map1Texture3
;
1714 struct gl_1d_map Map1Texture4
;
1715 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1722 struct gl_2d_map Map2Vertex3
;
1723 struct gl_2d_map Map2Vertex4
;
1724 struct gl_2d_map Map2Index
;
1725 struct gl_2d_map Map2Color4
;
1726 struct gl_2d_map Map2Normal
;
1727 struct gl_2d_map Map2Texture1
;
1728 struct gl_2d_map Map2Texture2
;
1729 struct gl_2d_map Map2Texture3
;
1730 struct gl_2d_map Map2Texture4
;
1731 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1737 * Names of the various vertex/fragment program register files, etc.
1739 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1740 * All values should fit in a 4-bit field.
1742 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1743 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1744 * be "uniform" variables since they can only be set outside glBegin/End.
1745 * They're also all stored in the same Parameters array.
1749 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1750 PROGRAM_INPUT
, /**< machine->Inputs[] */
1751 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1752 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1753 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1754 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1755 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1756 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1757 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1758 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1759 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1760 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1761 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1762 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1767 /** Vertex and fragment instructions */
1768 struct prog_instruction
;
1769 struct gl_program_parameter_list
;
1770 struct gl_uniform_list
;
1774 * Base class for any kind of program object
1779 GLubyte
*String
; /**< Null-terminated program text */
1781 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1782 GLenum Format
; /**< String encoding format */
1785 struct prog_instruction
*Instructions
;
1787 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1788 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1789 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1790 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1791 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1792 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1793 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1796 /** Named parameters, constants, etc. from program text */
1797 struct gl_program_parameter_list
*Parameters
;
1798 /** Numbered local parameters */
1799 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1801 /** Vertex/fragment shader varying vars */
1802 struct gl_program_parameter_list
*Varying
;
1803 /** Vertex program user-defined attributes */
1804 struct gl_program_parameter_list
*Attributes
;
1806 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1807 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1808 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1809 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1811 /** Logical counts */
1813 GLuint NumInstructions
;
1814 GLuint NumTemporaries
;
1815 GLuint NumParameters
;
1816 GLuint NumAttributes
;
1817 GLuint NumAddressRegs
;
1818 GLuint NumAluInstructions
;
1819 GLuint NumTexInstructions
;
1820 GLuint NumTexIndirections
;
1822 /** Native, actual h/w counts */
1824 GLuint NumNativeInstructions
;
1825 GLuint NumNativeTemporaries
;
1826 GLuint NumNativeParameters
;
1827 GLuint NumNativeAttributes
;
1828 GLuint NumNativeAddressRegs
;
1829 GLuint NumNativeAluInstructions
;
1830 GLuint NumNativeTexInstructions
;
1831 GLuint NumNativeTexIndirections
;
1836 /** Vertex program object */
1837 struct gl_vertex_program
1839 struct gl_program Base
; /**< base class */
1840 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1841 GLboolean IsPositionInvariant
;
1845 /** Geometry program object */
1846 struct gl_geometry_program
1848 struct gl_program Base
; /**< base class */
1851 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1852 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1853 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1857 /** Fragment program object */
1858 struct gl_fragment_program
1860 struct gl_program Base
; /**< base class */
1862 GLboolean UsesKill
; /**< shader uses KIL instruction */
1863 GLboolean OriginUpperLeft
;
1864 GLboolean PixelCenterInteger
;
1869 * State common to vertex and fragment programs.
1871 struct gl_program_state
1873 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1874 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1879 * Context state for vertex programs.
1881 struct gl_vertex_program_state
1883 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1884 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1885 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1886 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1887 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1889 /** Currently enabled and valid vertex program (including internal
1890 * programs, user-defined vertex programs and GLSL vertex shaders).
1891 * This is the program we must use when rendering.
1893 struct gl_vertex_program
*_Current
;
1895 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1897 /* For GL_NV_vertex_program only: */
1898 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1899 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1901 /** Should fixed-function T&L be implemented with a vertex prog? */
1902 GLboolean _MaintainTnlProgram
;
1904 /** Program to emulate fixed-function T&L (see above) */
1905 struct gl_vertex_program
*_TnlProgram
;
1907 /** Cache of fixed-function programs */
1908 struct gl_program_cache
*Cache
;
1910 GLboolean _Overriden
;
1915 * Context state for geometry programs.
1917 struct gl_geometry_program_state
1919 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1920 GLboolean _Enabled
; /**< Enabled and valid program? */
1921 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1923 /** Currently enabled and valid program (including internal programs
1924 * and compiled shader programs).
1926 struct gl_geometry_program
*_Current
;
1928 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1930 /** Cache of fixed-function programs */
1931 struct gl_program_cache
*Cache
;
1935 * Context state for fragment programs.
1937 struct gl_fragment_program_state
1939 GLboolean Enabled
; /**< User-set fragment program enable flag */
1940 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1941 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1943 /** Currently enabled and valid fragment program (including internal
1944 * programs, user-defined fragment programs and GLSL fragment shaders).
1945 * This is the program we must use when rendering.
1947 struct gl_fragment_program
*_Current
;
1949 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1951 /** Should fixed-function texturing be implemented with a fragment prog? */
1952 GLboolean _MaintainTexEnvProgram
;
1954 /** Program to emulate fixed-function texture env/combine (see above) */
1955 struct gl_fragment_program
*_TexEnvProgram
;
1957 /** Cache of fixed-function programs */
1958 struct gl_program_cache
*Cache
;
1963 * ATI_fragment_shader runtime state
1965 #define ATI_FS_INPUT_PRIMARY 0
1966 #define ATI_FS_INPUT_SECONDARY 1
1968 struct atifs_instruction
;
1969 struct atifs_setupinst
;
1972 * ATI fragment shader
1974 struct ati_fragment_shader
1978 struct atifs_instruction
*Instructions
[2];
1979 struct atifs_setupinst
*SetupInst
[2];
1980 GLfloat Constants
[8][4];
1981 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
1982 GLubyte numArithInstr
[2];
1983 GLubyte regsAssigned
[2];
1984 GLubyte NumPasses
; /**< 1 or 2 */
1986 GLubyte last_optype
;
1987 GLboolean interpinp1
;
1993 * Context state for GL_ATI_fragment_shader
1995 struct gl_ati_fragment_shader_state
1998 GLboolean _Enabled
; /**< enabled and valid shader? */
1999 GLboolean Compiling
;
2000 GLfloat GlobalConstants
[8][4];
2001 struct ati_fragment_shader
*Current
;
2006 * Occlusion/timer query object.
2008 struct gl_query_object
2010 GLenum Target
; /**< The query target, when active */
2011 GLuint Id
; /**< hash table ID/name */
2012 GLuint64EXT Result
; /**< the counter */
2013 GLboolean Active
; /**< inside Begin/EndQuery */
2014 GLboolean Ready
; /**< result is ready? */
2019 * Context state for query objects.
2021 struct gl_query_state
2023 struct _mesa_HashTable
*QueryObjects
;
2024 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2025 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2027 /** GL_NV_conditional_render */
2028 struct gl_query_object
*CondRenderQuery
;
2030 /** GL_EXT_transform_feedback */
2031 struct gl_query_object
*PrimitivesGenerated
;
2032 struct gl_query_object
*PrimitivesWritten
;
2034 /** GL_ARB_timer_query */
2035 struct gl_query_object
*TimeElapsed
;
2037 GLenum CondRenderMode
;
2041 /** Sync object state */
2042 struct gl_sync_object
{
2043 struct simple_node link
;
2044 GLenum Type
; /**< GL_SYNC_FENCE */
2045 GLuint Name
; /**< Fence name */
2046 GLint RefCount
; /**< Reference count */
2047 GLboolean DeletePending
; /**< Object was deleted while there were still
2048 * live references (e.g., sync not yet finished)
2050 GLenum SyncCondition
;
2051 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2052 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2056 /** Set by #pragma directives */
2057 struct gl_sl_pragmas
2059 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2060 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2061 GLboolean Optimize
; /**< defaults on */
2062 GLboolean Debug
; /**< defaults off */
2067 * A GLSL vertex or fragment shader object.
2071 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2072 GLuint Name
; /**< AKA the handle */
2073 GLint RefCount
; /**< Reference count */
2074 GLboolean DeletePending
;
2075 GLboolean CompileStatus
;
2076 GLboolean Main
; /**< shader defines main() */
2077 GLboolean UnresolvedRefs
;
2078 const GLchar
*Source
; /**< Source code string */
2079 GLuint SourceChecksum
; /**< for debug/logging purposes */
2080 struct gl_program
*Program
; /**< Post-compile assembly code */
2082 struct gl_sl_pragmas Pragmas
;
2087 * A GLSL program object.
2088 * Basically a linked collection of vertex and fragment shaders.
2090 struct gl_shader_program
2092 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2093 GLuint Name
; /**< aka handle or ID */
2094 GLint RefCount
; /**< Reference count */
2095 GLboolean DeletePending
;
2097 GLuint NumShaders
; /**< number of attached shaders */
2098 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2100 /** User-defined attribute bindings (glBindAttribLocation) */
2101 struct gl_program_parameter_list
*Attributes
;
2103 /** Transform feedback varyings */
2107 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2108 } TransformFeedback
;
2110 /** Geometry shader state - copied into gl_geometry_program at link time */
2113 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2114 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2115 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2118 /* post-link info: */
2119 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2120 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2121 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2122 struct gl_uniform_list
*Uniforms
;
2123 struct gl_program_parameter_list
*Varying
;
2124 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2125 GLboolean Validated
;
2126 GLboolean _Used
; /**< Ever used for drawing? */
2131 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2132 #define GLSL_LOG 0x2 /**< Write shaders to files */
2133 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2134 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2135 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2136 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2137 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2138 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2142 * Context state for GLSL vertex/fragment shaders.
2144 struct gl_shader_state
2146 struct gl_shader_program
*CurrentProgram
; /**< The user-bound program */
2147 /** Driver-selectable options: */
2148 GLboolean EmitHighLevelInstructions
; /**< IF/ELSE/ENDIF vs. BRA, etc. */
2149 GLboolean EmitContReturn
; /**< Emit CONT/RET opcodes? */
2150 GLboolean EmitCondCodes
; /**< Use condition codes? */
2151 GLboolean EmitComments
; /**< Annotated instructions */
2152 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2154 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2155 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2160 * Transform feedback object state
2162 struct gl_transform_feedback_object
2164 GLuint Name
; /**< AKA the object ID */
2166 GLboolean Active
; /**< Is transform feedback enabled? */
2167 GLboolean Paused
; /**< Is transform feedback paused? */
2169 /** The feedback buffers */
2170 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2171 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2173 /** Start of feedback data in dest buffer */
2174 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2175 /** Max data to put into dest buffer (in bytes) */
2176 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2181 * Context state for transform feedback.
2183 struct gl_transform_feedback
2185 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2187 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2189 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2190 struct gl_buffer_object
*CurrentBuffer
;
2192 /** The table of all transform feedback objects */
2193 struct _mesa_HashTable
*Objects
;
2195 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2196 struct gl_transform_feedback_object
*CurrentObject
;
2198 /** The default xform-fb object (Name==0) */
2199 struct gl_transform_feedback_object
*DefaultObject
;
2205 * State which can be shared by multiple contexts:
2207 struct gl_shared_state
2209 _glthread_Mutex Mutex
; /**< for thread safety */
2210 GLint RefCount
; /**< Reference count */
2211 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2212 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2214 /** Default texture objects (shared by all texture units) */
2215 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2217 /** Fallback texture used when a bound texture is incomplete */
2218 struct gl_texture_object
*FallbackTex
;
2221 * \name Thread safety and statechange notification for texture
2224 * \todo Improve the granularity of locking.
2227 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2228 GLuint TextureStateStamp
; /**< state notification for shared tex */
2231 /** Default buffer object for vertex arrays that aren't in VBOs */
2232 struct gl_buffer_object
*NullBufferObj
;
2235 * \name Vertex/geometry/fragment programs
2238 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2239 #if FEATURE_ARB_vertex_program
2240 struct gl_vertex_program
*DefaultVertexProgram
;
2242 #if FEATURE_ARB_fragment_program
2243 struct gl_fragment_program
*DefaultFragmentProgram
;
2245 #if FEATURE_ARB_geometry_shader4
2246 struct gl_geometry_program
*DefaultGeometryProgram
;
2250 #if FEATURE_ATI_fragment_shader
2251 struct _mesa_HashTable
*ATIShaders
;
2252 struct ati_fragment_shader
*DefaultFragmentShader
;
2255 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
2256 struct _mesa_HashTable
*BufferObjects
;
2259 #if FEATURE_ARB_shader_objects
2260 /** Table of both gl_shader and gl_shader_program objects */
2261 struct _mesa_HashTable
*ShaderObjects
;
2264 #if FEATURE_EXT_framebuffer_object
2265 struct _mesa_HashTable
*RenderBuffers
;
2266 struct _mesa_HashTable
*FrameBuffers
;
2269 #if FEATURE_ARB_sync
2270 struct simple_node SyncObjects
;
2273 void *DriverData
; /**< Device driver shared state */
2280 * A renderbuffer stores colors or depth values or stencil values.
2281 * A framebuffer object will have a collection of these.
2282 * Data are read/written to the buffer with a handful of Get/Put functions.
2284 * Instances of this object are allocated with the Driver's NewRenderbuffer
2285 * hook. Drivers will likely wrap this class inside a driver-specific
2286 * class to simulate inheritance.
2288 struct gl_renderbuffer
2290 #define RB_MAGIC 0xaabbccdd
2291 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2292 _glthread_Mutex Mutex
; /**< for thread safety */
2293 GLuint ClassID
; /**< Useful for drivers */
2296 GLuint Width
, Height
;
2297 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2299 GLenum InternalFormat
; /**< The user-specified format */
2300 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2301 GL_STENCIL_INDEX. */
2302 GLuint Format
; /**< The actual format: MESA_FORMAT_x */
2306 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2307 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2309 /* Used to wrap one renderbuffer around another: */
2310 struct gl_renderbuffer
*Wrapped
;
2312 /* Delete this renderbuffer */
2313 void (*Delete
)(struct gl_renderbuffer
*rb
);
2315 /* Allocate new storage for this renderbuffer */
2316 GLboolean (*AllocStorage
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2317 GLenum internalFormat
,
2318 GLuint width
, GLuint height
);
2320 /* Lock/Unlock are called before/after calling the Get/Put functions.
2321 * Not sure this is the right place for these yet.
2322 void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2323 void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2326 /* Return a pointer to the element/pixel at (x,y).
2327 * Should return NULL if the buffer memory can't be directly addressed.
2329 void *(*GetPointer
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2332 /* Get/Read a row of values.
2333 * The values will be of format _BaseFormat and type DataType.
2335 void (*GetRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2336 GLint x
, GLint y
, void *values
);
2338 /* Get/Read values at arbitrary locations.
2339 * The values will be of format _BaseFormat and type DataType.
2341 void (*GetValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2342 const GLint x
[], const GLint y
[], void *values
);
2344 /* Put/Write a row of values.
2345 * The values will be of format _BaseFormat and type DataType.
2347 void (*PutRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2348 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2350 /* Put/Write a row of RGB values. This is a special-case routine that's
2351 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2352 * a common case for glDrawPixels and some triangle routines.
2353 * The values will be of format GL_RGB and type DataType.
2355 void (*PutRowRGB
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2356 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2359 /* Put/Write a row of identical values.
2360 * The values will be of format _BaseFormat and type DataType.
2362 void (*PutMonoRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2363 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2365 /* Put/Write values at arbitrary locations.
2366 * The values will be of format _BaseFormat and type DataType.
2368 void (*PutValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2369 const GLint x
[], const GLint y
[], const void *values
,
2370 const GLubyte
*mask
);
2371 /* Put/Write identical values at arbitrary locations.
2372 * The values will be of format _BaseFormat and type DataType.
2374 void (*PutMonoValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2375 GLuint count
, const GLint x
[], const GLint y
[],
2376 const void *value
, const GLubyte
*mask
);
2381 * A renderbuffer attachment points to either a texture object (and specifies
2382 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2384 struct gl_renderbuffer_attachment
2386 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2390 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2391 * application supplied renderbuffer object.
2393 struct gl_renderbuffer
*Renderbuffer
;
2396 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2397 * supplied texture object.
2399 struct gl_texture_object
*Texture
;
2400 GLuint TextureLevel
; /**< Attached mipmap level. */
2401 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2402 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2403 * and 2D array textures */
2408 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2409 * In C++ terms, think of this as a base class from which device drivers
2410 * will make derived classes.
2412 struct gl_framebuffer
2414 _glthread_Mutex Mutex
; /**< for thread safety */
2416 * If zero, this is a window system framebuffer. If non-zero, this
2417 * is a FBO framebuffer; note that for some devices (i.e. those with
2418 * a natural pixel coordinate system for FBOs that differs from the
2419 * OpenGL/Mesa coordinate system), this means that the viewport,
2420 * polygon face orientation, and polygon stipple will have to be inverted.
2425 GLboolean DeletePending
;
2428 * The framebuffer's visual. Immutable if this is a window system buffer.
2429 * Computed from attachments if user-made FBO.
2433 GLboolean Initialized
;
2435 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2437 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2439 GLint _Xmin
, _Xmax
; /**< inclusive */
2440 GLint _Ymin
, _Ymax
; /**< exclusive */
2443 /** \name Derived Z buffer stuff */
2445 GLuint _DepthMax
; /**< Max depth buffer value */
2446 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2447 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2450 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2453 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2454 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2456 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2457 * attribute group and GL_PIXEL attribute group, respectively.
2459 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2460 GLenum ColorReadBuffer
;
2462 /** Computed from ColorDraw/ReadBuffer above */
2463 GLuint _NumColorDrawBuffers
;
2464 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2465 GLint _ColorReadBufferIndex
; /* -1 = None */
2466 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2467 struct gl_renderbuffer
*_ColorReadBuffer
;
2469 /** The Actual depth/stencil buffers to use. May be wrappers around the
2470 * depth/stencil buffers attached above. */
2471 struct gl_renderbuffer
*_DepthBuffer
;
2472 struct gl_renderbuffer
*_StencilBuffer
;
2474 /** Delete this framebuffer */
2475 void (*Delete
)(struct gl_framebuffer
*fb
);
2480 * Limits for vertex and fragment programs.
2482 struct gl_program_constants
2484 /* logical limits */
2485 GLuint MaxInstructions
;
2486 GLuint MaxAluInstructions
; /* fragment programs only, for now */
2487 GLuint MaxTexInstructions
; /* fragment programs only, for now */
2488 GLuint MaxTexIndirections
; /* fragment programs only, for now */
2491 GLuint MaxAddressRegs
; /* vertex program only, for now */
2492 GLuint MaxParameters
;
2493 GLuint MaxLocalParams
;
2494 GLuint MaxEnvParams
;
2495 /* native/hardware limits */
2496 GLuint MaxNativeInstructions
;
2497 GLuint MaxNativeAluInstructions
; /* fragment programs only, for now */
2498 GLuint MaxNativeTexInstructions
; /* fragment programs only, for now */
2499 GLuint MaxNativeTexIndirections
; /* fragment programs only, for now */
2500 GLuint MaxNativeAttribs
;
2501 GLuint MaxNativeTemps
;
2502 GLuint MaxNativeAddressRegs
; /* vertex program only, for now */
2503 GLuint MaxNativeParameters
;
2505 GLuint MaxUniformComponents
;
2506 #if FEATURE_ARB_geometry_shader4
2507 GLuint MaxGeometryTextureImageUnits
;
2508 GLuint MaxGeometryVaryingComponents
;
2509 GLuint MaxVertexVaryingComponents
;
2510 GLuint MaxGeometryUniformComponents
;
2511 GLuint MaxGeometryOutputVertices
;
2512 GLuint MaxGeometryTotalOutputComponents
;
2518 * Constants which may be overridden by device driver during context creation
2519 * but are never changed after that.
2523 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2524 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2525 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2526 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2527 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2528 GLuint MaxTextureCoordUnits
;
2529 GLuint MaxTextureImageUnits
;
2530 GLuint MaxVertexTextureImageUnits
;
2531 GLuint MaxCombinedTextureImageUnits
;
2532 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2533 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2534 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2536 GLuint MaxArrayLockSize
;
2540 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2541 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2542 GLfloat PointSizeGranularity
;
2543 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2544 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2545 GLfloat LineWidthGranularity
;
2547 GLuint MaxColorTableSize
;
2548 GLuint MaxConvolutionWidth
;
2549 GLuint MaxConvolutionHeight
;
2551 GLuint MaxClipPlanes
;
2553 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2554 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2556 GLuint MaxViewportWidth
, MaxViewportHeight
;
2558 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2559 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2560 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2561 GLuint MaxProgramMatrices
;
2562 GLuint MaxProgramMatrixStackDepth
;
2564 /** vertex array / buffer object bounds checking */
2565 GLboolean CheckArrayBounds
;
2567 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2569 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2570 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2571 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2573 GLuint MaxVarying
; /**< Number of float[4] varying parameters */
2575 GLbitfield SupportedBumpUnits
; /**> units supporting GL_ATI_envmap_bumpmap as targets */
2578 * Maximum amount of time, measured in nanseconds, that the server can wait.
2580 GLuint64 MaxServerWaitTimeout
;
2582 /** GL_EXT_provoking_vertex */
2583 GLboolean QuadsFollowProvokingVertexConvention
;
2585 /** OpenGL version 3.0 */
2586 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2588 /** OpenGL version 3.2 */
2589 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2591 /** GL_EXT_transform_feedback */
2592 GLuint MaxTransformFeedbackSeparateAttribs
;
2593 GLuint MaxTransformFeedbackSeparateComponents
;
2594 GLuint MaxTransformFeedbackInterleavedComponents
;
2599 * Enable flag for each OpenGL extension. Different device drivers will
2600 * enable different extensions at runtime.
2602 struct gl_extensions
2604 GLboolean dummy
; /* don't remove this! */
2605 GLboolean ARB_blend_func_extended
;
2606 GLboolean ARB_copy_buffer
;
2607 GLboolean ARB_depth_buffer_float
;
2608 GLboolean ARB_depth_clamp
;
2609 GLboolean ARB_depth_texture
;
2610 GLboolean ARB_draw_buffers
;
2611 GLboolean ARB_draw_elements_base_vertex
;
2612 GLboolean ARB_draw_instanced
;
2613 GLboolean ARB_fragment_coord_conventions
;
2614 GLboolean ARB_fragment_program
;
2615 GLboolean ARB_fragment_program_shadow
;
2616 GLboolean ARB_fragment_shader
;
2617 GLboolean ARB_framebuffer_object
;
2618 GLboolean ARB_explicit_attrib_location
;
2619 GLboolean ARB_geometry_shader4
;
2620 GLboolean ARB_half_float_pixel
;
2621 GLboolean ARB_half_float_vertex
;
2622 GLboolean ARB_imaging
;
2623 GLboolean ARB_instanced_arrays
;
2624 GLboolean ARB_map_buffer_range
;
2625 GLboolean ARB_multisample
;
2626 GLboolean ARB_multitexture
;
2627 GLboolean ARB_occlusion_query
;
2628 GLboolean ARB_occlusion_query2
;
2629 GLboolean ARB_point_sprite
;
2630 GLboolean ARB_sampler_objects
;
2631 GLboolean ARB_seamless_cube_map
;
2632 GLboolean ARB_shader_objects
;
2633 GLboolean ARB_shading_language_100
;
2634 GLboolean ARB_shading_language_120
;
2635 GLboolean ARB_shadow
;
2636 GLboolean ARB_shadow_ambient
;
2638 GLboolean ARB_texture_border_clamp
;
2639 GLboolean ARB_texture_buffer_object
;
2640 GLboolean ARB_texture_compression
;
2641 GLboolean ARB_texture_cube_map
;
2642 GLboolean ARB_texture_env_combine
;
2643 GLboolean ARB_texture_env_crossbar
;
2644 GLboolean ARB_texture_env_dot3
;
2645 GLboolean ARB_texture_float
;
2646 GLboolean ARB_texture_mirrored_repeat
;
2647 GLboolean ARB_texture_multisample
;
2648 GLboolean ARB_texture_non_power_of_two
;
2649 GLboolean ARB_texture_rg
;
2650 GLboolean ARB_texture_rgb10_a2ui
;
2651 GLboolean ARB_timer_query
;
2652 GLboolean ARB_transform_feedback2
;
2653 GLboolean ARB_transpose_matrix
;
2654 GLboolean ARB_uniform_buffer_object
;
2655 GLboolean ARB_vertex_array_object
;
2656 GLboolean ARB_vertex_buffer_object
;
2657 GLboolean ARB_vertex_program
;
2658 GLboolean ARB_vertex_shader
;
2659 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2660 GLboolean ARB_window_pos
;
2663 GLboolean EXT_blend_color
;
2664 GLboolean EXT_blend_equation_separate
;
2665 GLboolean EXT_blend_func_separate
;
2666 GLboolean EXT_blend_logic_op
;
2667 GLboolean EXT_blend_minmax
;
2668 GLboolean EXT_blend_subtract
;
2669 GLboolean EXT_clip_volume_hint
;
2670 GLboolean EXT_cull_vertex
;
2671 GLboolean EXT_convolution
;
2672 GLboolean EXT_compiled_vertex_array
;
2673 GLboolean EXT_copy_texture
;
2674 GLboolean EXT_depth_bounds_test
;
2675 GLboolean EXT_draw_buffers2
;
2676 GLboolean EXT_draw_range_elements
;
2677 GLboolean EXT_fog_coord
;
2678 GLboolean EXT_framebuffer_blit
;
2679 GLboolean EXT_framebuffer_multisample
;
2680 GLboolean EXT_framebuffer_object
;
2681 GLboolean EXT_framebuffer_sRGB
;
2682 GLboolean EXT_gpu_program_parameters
;
2683 GLboolean EXT_histogram
;
2684 GLboolean EXT_multi_draw_arrays
;
2685 GLboolean EXT_paletted_texture
;
2686 GLboolean EXT_packed_depth_stencil
;
2687 GLboolean EXT_packed_float
;
2688 GLboolean EXT_packed_pixels
;
2689 GLboolean EXT_pixel_buffer_object
;
2690 GLboolean EXT_point_parameters
;
2691 GLboolean EXT_polygon_offset
;
2692 GLboolean EXT_provoking_vertex
;
2693 GLboolean EXT_rescale_normal
;
2694 GLboolean EXT_shadow_funcs
;
2695 GLboolean EXT_secondary_color
;
2696 GLboolean EXT_separate_specular_color
;
2697 GLboolean EXT_shared_texture_palette
;
2698 GLboolean EXT_stencil_wrap
;
2699 GLboolean EXT_stencil_two_side
;
2700 GLboolean EXT_subtexture
;
2701 GLboolean EXT_texture
;
2702 GLboolean EXT_texture_object
;
2703 GLboolean EXT_texture3D
;
2704 GLboolean EXT_texture_array
;
2705 GLboolean EXT_texture_compression_s3tc
;
2706 GLboolean EXT_texture_compression_rgtc
;
2707 GLboolean EXT_texture_env_add
;
2708 GLboolean EXT_texture_env_combine
;
2709 GLboolean EXT_texture_env_dot3
;
2710 GLboolean EXT_texture_filter_anisotropic
;
2711 GLboolean EXT_texture_integer
;
2712 GLboolean EXT_texture_lod_bias
;
2713 GLboolean EXT_texture_mirror_clamp
;
2714 GLboolean EXT_texture_shared_exponent
;
2715 GLboolean EXT_texture_sRGB
;
2716 GLboolean EXT_texture_swizzle
;
2717 GLboolean EXT_transform_feedback
;
2718 GLboolean EXT_timer_query
;
2719 GLboolean EXT_vertex_array
;
2720 GLboolean EXT_vertex_array_bgra
;
2721 GLboolean EXT_vertex_array_set
;
2722 /* vendor extensions */
2723 GLboolean APPLE_client_storage
;
2724 GLboolean APPLE_packed_pixels
;
2725 GLboolean APPLE_vertex_array_object
;
2726 GLboolean APPLE_object_purgeable
;
2727 GLboolean ATI_envmap_bumpmap
;
2728 GLboolean ATI_texture_mirror_once
;
2729 GLboolean ATI_texture_env_combine3
;
2730 GLboolean ATI_fragment_shader
;
2731 GLboolean ATI_separate_stencil
;
2732 GLboolean IBM_rasterpos_clip
;
2733 GLboolean IBM_multimode_draw_arrays
;
2734 GLboolean MESA_pack_invert
;
2735 GLboolean MESA_packed_depth_stencil
;
2736 GLboolean MESA_resize_buffers
;
2737 GLboolean MESA_ycbcr_texture
;
2738 GLboolean MESA_texture_array
;
2739 GLboolean MESA_texture_signed_rgba
;
2740 GLboolean NV_blend_square
;
2741 GLboolean NV_conditional_render
;
2742 GLboolean NV_fragment_program
;
2743 GLboolean NV_fragment_program_option
;
2744 GLboolean NV_light_max_exponent
;
2745 GLboolean NV_point_sprite
;
2746 GLboolean NV_primitive_restart
;
2747 GLboolean NV_texgen_reflection
;
2748 GLboolean NV_texture_env_combine4
;
2749 GLboolean NV_texture_rectangle
;
2750 GLboolean NV_vertex_program
;
2751 GLboolean NV_vertex_program1_1
;
2752 GLboolean OES_read_format
;
2753 GLboolean SGI_color_matrix
;
2754 GLboolean SGI_color_table
;
2755 GLboolean SGI_texture_color_table
;
2756 GLboolean SGIS_generate_mipmap
;
2757 GLboolean SGIS_texture_edge_clamp
;
2758 GLboolean SGIS_texture_lod
;
2759 GLboolean TDFX_texture_compression_FXT1
;
2761 #if FEATURE_OES_EGL_image
2762 GLboolean OES_EGL_image
;
2764 #if FEATURE_OES_draw_texture
2765 GLboolean OES_draw_texture
;
2766 #endif /* FEATURE_OES_draw_texture */
2767 /** The extension string */
2768 const GLubyte
*String
;
2769 /** Number of supported extensions */
2775 * A stack of matrices (projection, modelview, color, texture, etc).
2777 struct gl_matrix_stack
2779 GLmatrix
*Top
; /**< points into Stack */
2780 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2781 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2782 GLuint MaxDepth
; /**< size of Stack[] array */
2783 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2788 * \name Bits for image transfer operations
2789 * \sa __GLcontextRec::ImageTransferState.
2792 #define IMAGE_SCALE_BIAS_BIT 0x1
2793 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2794 #define IMAGE_MAP_COLOR_BIT 0x4
2795 #define IMAGE_COLOR_TABLE_BIT 0x8
2796 #define IMAGE_CONVOLUTION_BIT 0x10
2797 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2798 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2799 #define IMAGE_COLOR_MATRIX_BIT 0x80
2800 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2801 #define IMAGE_HISTOGRAM_BIT 0x200
2802 #define IMAGE_MIN_MAX_BIT 0x400
2803 #define IMAGE_CLAMP_BIT 0x800
2806 /** Pixel Transfer ops up to convolution */
2807 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2808 IMAGE_SHIFT_OFFSET_BIT | \
2809 IMAGE_MAP_COLOR_BIT | \
2810 IMAGE_COLOR_TABLE_BIT)
2812 /** Pixel transfer ops after convolution */
2813 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2814 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2815 IMAGE_COLOR_MATRIX_BIT | \
2816 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2817 IMAGE_HISTOGRAM_BIT | \
2823 * \name Bits to indicate what state has changed.
2828 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2829 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2830 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2831 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2832 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2833 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2834 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2835 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2836 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2837 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2838 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2839 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2840 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2841 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2842 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2843 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2844 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2845 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2846 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2847 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2848 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2849 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2850 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2851 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2852 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2853 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2854 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2855 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2856 #define _NEW_CURRENT_ATTRIB 0x10000000 /**< __GLcontextRec::Current */
2857 #define _NEW_PROGRAM_CONSTANTS 0x20000000
2858 #define _NEW_BUFFER_OBJECT 0x40000000
2864 * \name Bits to track array state changes
2866 * Also used to summarize array enabled.
2869 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2870 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2871 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2872 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2873 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2874 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2875 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2876 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2877 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2878 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2879 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2880 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2881 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2882 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2883 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2884 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2885 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2886 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2887 #define _NEW_ARRAY_ALL 0xffffffff
2890 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2891 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2897 * \name A bunch of flags that we think might be useful to drivers.
2899 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2902 #define DD_FLATSHADE 0x1
2903 #define DD_SEPARATE_SPECULAR 0x2
2904 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2905 #define DD_TRI_LIGHT_TWOSIDE 0x8
2906 #define DD_TRI_UNFILLED 0x10
2907 #define DD_TRI_SMOOTH 0x20
2908 #define DD_TRI_STIPPLE 0x40
2909 #define DD_TRI_OFFSET 0x80
2910 #define DD_LINE_SMOOTH 0x100
2911 #define DD_LINE_STIPPLE 0x200
2912 #define DD_LINE_WIDTH 0x400
2913 #define DD_POINT_SMOOTH 0x800
2914 #define DD_POINT_SIZE 0x1000
2915 #define DD_POINT_ATTEN 0x2000
2916 #define DD_TRI_TWOSTENCIL 0x4000
2921 * \name Define the state changes under which each of these bits might change
2924 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2925 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2926 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2927 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2928 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2929 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2930 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2931 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2932 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2933 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2934 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2935 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2936 #define _DD_NEW_POINT_SIZE _NEW_POINT
2937 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2942 * Composite state flags
2945 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2951 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2954 #define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL | \
2961 /* This has to be included here. */
2965 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2968 * Core Mesa's support for tnl modules:
2970 struct gl_tnl_module
2973 * Vertex format to be lazily swapped into current dispatch.
2975 const GLvertexformat
*Current
;
2978 * \name Record of functions swapped out.
2979 * On restore, only need to swap these functions back in.
2983 _glapi_proc
* location
;
2984 _glapi_proc function
;
2985 } Swapped
[NUM_VERTEX_FORMAT_ENTRIES
];
2992 * Display list flags.
2993 * Strictly this is a tnl-private concept, but it doesn't seem
2994 * worthwhile adding a tnl private structure just to hold this one bit
2997 #define DLIST_DANGLING_REFS 0x1
3000 /** Opaque declaration of display list payload data type */
3001 union gl_dlist_node
;
3005 * Provide a location where information about a display list can be
3006 * collected. Could be extended with driverPrivate structures,
3007 * etc. in the future.
3009 struct gl_display_list
3012 GLbitfield Flags
; /**< DLIST_x flags */
3013 /** The dlist commands are in a linked list of nodes */
3014 union gl_dlist_node
*Head
;
3019 * State used during display list compilation and execution.
3021 struct gl_dlist_state
3023 GLuint CallDepth
; /**< Current recursion calling depth */
3025 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3026 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3027 GLuint CurrentPos
; /**< Index into current block of nodes */
3029 GLvertexformat ListVtxfmt
;
3031 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3032 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3034 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3035 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3037 GLubyte ActiveIndex
;
3038 GLfloat CurrentIndex
;
3040 GLubyte ActiveEdgeFlag
;
3041 GLboolean CurrentEdgeFlag
;
3044 /* State known to have been set by the currently-compiling display
3045 * list. Used to eliminate some redundant state changes.
3052 * Enum for the OpenGL APIs we know about and may support.
3061 * Mesa rendering context.
3063 * This is the central context data structure for Mesa. Almost all
3064 * OpenGL state is contained in this structure.
3065 * Think of this as a base class from which device drivers will derive
3068 * The GLcontext typedef names this structure.
3070 struct __GLcontextRec
3072 /** State possibly shared with other contexts in the address space */
3073 struct gl_shared_state
*Shared
;
3075 /** \name API function pointer tables */
3078 struct _glapi_table
*Save
; /**< Display list save functions */
3079 struct _glapi_table
*Exec
; /**< Execute functions */
3080 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3084 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
3085 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
3086 GLframebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3087 GLframebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3090 * Device driver function pointer table
3092 struct dd_function_table Driver
;
3094 void *DriverCtx
; /**< Points to device driver context/state */
3096 /** Core/Driver constants */
3097 struct gl_constants Const
;
3099 /** \name The various 4x4 matrix stacks */
3101 struct gl_matrix_stack ModelviewMatrixStack
;
3102 struct gl_matrix_stack ProjectionMatrixStack
;
3103 struct gl_matrix_stack ColorMatrixStack
;
3104 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3105 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3106 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3109 /** Combined modelview and projection matrix */
3110 GLmatrix _ModelProjectMatrix
;
3112 /** \name Display lists */
3113 struct gl_dlist_state ListState
;
3115 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3116 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3118 /** Extension information */
3119 struct gl_extensions Extensions
;
3122 GLuint VersionMajor
, VersionMinor
;
3123 char *VersionString
;
3125 /** \name State attribute stack (for glPush/PopAttrib) */
3127 GLuint AttribStackDepth
;
3128 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3131 /** \name Renderer attribute groups
3133 * We define a struct for each attribute group to make pushing and popping
3134 * attributes easy. Also it's a good organization.
3137 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3138 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3139 struct gl_current_attrib Current
; /**< Current attributes */
3140 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3141 struct gl_eval_attrib Eval
; /**< Eval attributes */
3142 struct gl_fog_attrib Fog
; /**< Fog attributes */
3143 struct gl_hint_attrib Hint
; /**< Hint attributes */
3144 struct gl_light_attrib Light
; /**< Light attributes */
3145 struct gl_line_attrib Line
; /**< Line attributes */
3146 struct gl_list_attrib List
; /**< List attributes */
3147 struct gl_multisample_attrib Multisample
;
3148 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3149 struct gl_point_attrib Point
; /**< Point attributes */
3150 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3151 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3152 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3153 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3154 struct gl_texture_attrib Texture
; /**< Texture attributes */
3155 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3156 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3159 /** \name Client attribute stack */
3161 GLuint ClientAttribStackDepth
;
3162 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3165 /** \name Client attribute groups */
3167 struct gl_array_attrib Array
; /**< Vertex arrays */
3168 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3169 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3170 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3173 /** \name Other assorted state (not pushed/popped on attribute stack) */
3175 struct gl_pixelmaps PixelMaps
;
3176 struct gl_histogram_attrib Histogram
;
3177 struct gl_minmax_attrib MinMax
;
3178 struct gl_convolution_attrib Convolution1D
;
3179 struct gl_convolution_attrib Convolution2D
;
3180 struct gl_convolution_attrib Separable2D
;
3182 struct gl_evaluators EvalMap
; /**< All evaluators */
3183 struct gl_feedback Feedback
; /**< Feedback */
3184 struct gl_selection Select
; /**< Selection */
3186 struct gl_color_table ColorTable
[COLORTABLE_MAX
];
3187 struct gl_color_table ProxyColorTable
[COLORTABLE_MAX
];
3189 struct gl_program_state Program
; /**< general program state */
3190 struct gl_vertex_program_state VertexProgram
;
3191 struct gl_fragment_program_state FragmentProgram
;
3192 struct gl_geometry_program_state GeometryProgram
;
3193 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3195 struct gl_shader_state Shader
; /**< GLSL shader object state */
3197 struct gl_query_state Query
; /**< occlusion, timer queries */
3199 struct gl_transform_feedback TransformFeedback
;
3201 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3202 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3205 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3207 #if FEATURE_EXT_framebuffer_object
3208 struct gl_renderbuffer
*CurrentRenderbuffer
;
3211 GLenum ErrorValue
; /**< Last error code */
3214 * Recognize and silence repeated error debug messages in buggy apps.
3216 const char *ErrorDebugFmtString
;
3217 GLuint ErrorDebugCount
;
3219 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3220 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3222 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3224 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3226 /** \name Derived state */
3228 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3229 * state validation so they need to always be current.
3231 GLbitfield _TriangleCaps
;
3232 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3233 GLfloat _EyeZDir
[3];
3234 GLfloat _ModelViewInvScale
;
3235 GLboolean _NeedEyeCoords
;
3236 GLboolean _ForceEyeCoords
;
3238 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3240 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3241 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3244 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3246 /** \name For debugging/development only */
3248 GLboolean FirstTimeCurrent
;
3251 /** Dither disable via MESA_NO_DITHER env var */
3254 /** software compression/decompression supported or not */
3255 GLboolean Mesa_DXTn
;
3258 * Use dp4 (rather than mul/mad) instructions for position
3261 GLboolean mvp_with_dp4
;
3263 /** Core tnl module support */
3264 struct gl_tnl_module TnlModule
;
3267 * \name Hooks for module contexts.
3269 * These will eventually live in the driver or elsewhere.
3272 void *swrast_context
;
3273 void *swsetup_context
;
3274 void *swtnl_context
;
3276 struct st_context
*st
;
3282 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
3283 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
3287 extern int MESA_VERBOSE
;
3288 extern int MESA_DEBUG_FLAGS
;
3289 # define MESA_FUNCTION __FUNCTION__
3291 # define MESA_VERBOSE 0
3292 # define MESA_DEBUG_FLAGS 0
3293 # define MESA_FUNCTION "a function"
3300 /** The MESA_VERBOSE var is a bitmask of these flags */
3303 VERBOSE_VARRAY
= 0x0001,
3304 VERBOSE_TEXTURE
= 0x0002,
3305 VERBOSE_MATERIAL
= 0x0004,
3306 VERBOSE_PIPELINE
= 0x0008,
3307 VERBOSE_DRIVER
= 0x0010,
3308 VERBOSE_STATE
= 0x0020,
3309 VERBOSE_API
= 0x0040,
3310 VERBOSE_DISPLAY_LIST
= 0x0100,
3311 VERBOSE_LIGHTING
= 0x0200,
3312 VERBOSE_PRIMS
= 0x0400,
3313 VERBOSE_VERTS
= 0x0800,
3314 VERBOSE_DISASSEM
= 0x1000,
3315 VERBOSE_DRAW
= 0x2000,
3316 VERBOSE_SWAPBUFFERS
= 0x4000
3320 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3323 DEBUG_ALWAYS_FLUSH
= 0x1
3328 #endif /* MTYPES_H */