2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include "main/glheader.h"
38 #include "main/config.h"
39 #include "main/mfeatures.h"
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
42 #include "main/simple_list.h" /* struct simple_node */
44 /* Shader stages. Note that these will become 5 with tessellation.
45 * These MUST have the same values as PIPE_SHADER_*
47 #define MESA_SHADER_VERTEX 0
48 #define MESA_SHADER_FRAGMENT 1
49 #define MESA_SHADER_GEOMETRY 2
50 #define MESA_SHADER_TYPES 3
55 * Must be simply different than GL_VERTEX_PROGRAM
56 * and GL_FRAGMENT_PROGRAM_ARB
57 * FIXME: this will have to be a real GL extension
59 #define MESA_GEOMETRY_PROGRAM 0x9999
62 * Color channel data type.
65 typedef GLubyte GLchan
;
67 #define CHAN_MAXF 255.0F
68 #define CHAN_TYPE GL_UNSIGNED_BYTE
70 typedef GLushort GLchan
;
71 #define CHAN_MAX 65535
72 #define CHAN_MAXF 65535.0F
73 #define CHAN_TYPE GL_UNSIGNED_SHORT
75 typedef GLfloat GLchan
;
77 #define CHAN_MAXF 1.0F
78 #define CHAN_TYPE GL_FLOAT
80 #error "illegal number of color channel bits"
85 * Stencil buffer data type.
88 typedef GLubyte GLstencil
;
89 #elif STENCIL_BITS==16
90 typedef GLushort GLstencil
;
92 # error "illegal number of stencil bits"
97 * \name 64-bit extension of GLbitfield.
100 typedef GLuint64 GLbitfield64
;
102 #define BITFIELD64_ONE 1ULL
103 #define BITFIELD64_ALLONES ~0ULL
105 /** Set a single bit */
106 #define BITFIELD64_BIT(b) (BITFIELD64_ONE << (b))
108 /** Set a mask of the least significant \c b bits */
109 #define BITFIELD64_MASK(b) (((b) >= 64) ? BITFIELD64_ALLONES : \
110 (BITFIELD64_BIT(b) - 1))
113 * Set all bits from l (low bit) to h (high bit), inclusive.
115 * \note \C BITFIELD_64_RANGE(0, 63) return 64 set bits.
117 #define BITFIELD64_RANGE(l, h) (BITFIELD64_MASK((h) + 1) & ~BITFIELD64_MASK(l))
122 * \name Some forward type declarations
125 struct _mesa_HashTable
;
126 struct gl_attrib_node
;
127 struct gl_list_extensions
;
128 struct gl_meta_state
;
129 struct gl_pixelstore_attrib
;
130 struct gl_program_cache
;
131 struct gl_texture_format
;
132 struct gl_texture_image
;
133 struct gl_texture_object
;
135 typedef struct __GLcontextRec GLcontext
;
136 typedef struct __GLcontextModesRec GLvisual
;
137 typedef struct gl_framebuffer GLframebuffer
;
143 * Indexes for vertex program attributes.
144 * GL_NV_vertex_program aliases generic attributes over the conventional
145 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
146 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
147 * generic attributes are distinct/separate).
152 VERT_ATTRIB_WEIGHT
= 1,
153 VERT_ATTRIB_NORMAL
= 2,
154 VERT_ATTRIB_COLOR0
= 3,
155 VERT_ATTRIB_COLOR1
= 4,
157 VERT_ATTRIB_COLOR_INDEX
= 6,
158 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
159 VERT_ATTRIB_EDGEFLAG
= 7,
160 VERT_ATTRIB_TEX0
= 8,
161 VERT_ATTRIB_TEX1
= 9,
162 VERT_ATTRIB_TEX2
= 10,
163 VERT_ATTRIB_TEX3
= 11,
164 VERT_ATTRIB_TEX4
= 12,
165 VERT_ATTRIB_TEX5
= 13,
166 VERT_ATTRIB_TEX6
= 14,
167 VERT_ATTRIB_TEX7
= 15,
168 VERT_ATTRIB_GENERIC0
= 16,
169 VERT_ATTRIB_GENERIC1
= 17,
170 VERT_ATTRIB_GENERIC2
= 18,
171 VERT_ATTRIB_GENERIC3
= 19,
172 VERT_ATTRIB_GENERIC4
= 20,
173 VERT_ATTRIB_GENERIC5
= 21,
174 VERT_ATTRIB_GENERIC6
= 22,
175 VERT_ATTRIB_GENERIC7
= 23,
176 VERT_ATTRIB_GENERIC8
= 24,
177 VERT_ATTRIB_GENERIC9
= 25,
178 VERT_ATTRIB_GENERIC10
= 26,
179 VERT_ATTRIB_GENERIC11
= 27,
180 VERT_ATTRIB_GENERIC12
= 28,
181 VERT_ATTRIB_GENERIC13
= 29,
182 VERT_ATTRIB_GENERIC14
= 30,
183 VERT_ATTRIB_GENERIC15
= 31,
188 * Bitflags for vertex attributes.
189 * These are used in bitfields in many places.
192 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
193 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
194 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
195 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
196 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
197 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
198 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
199 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
200 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
201 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
202 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
203 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
204 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
205 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
206 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
207 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
208 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
209 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
210 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
211 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
212 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
213 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
214 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
215 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
216 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
217 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
218 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
219 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
220 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
221 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
222 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
223 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
225 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
226 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
231 * Indexes for vertex program result attributes
235 VERT_RESULT_HPOS
= 0,
236 VERT_RESULT_COL0
= 1,
237 VERT_RESULT_COL1
= 2,
238 VERT_RESULT_FOGC
= 3,
239 VERT_RESULT_TEX0
= 4,
240 VERT_RESULT_TEX1
= 5,
241 VERT_RESULT_TEX2
= 6,
242 VERT_RESULT_TEX3
= 7,
243 VERT_RESULT_TEX4
= 8,
244 VERT_RESULT_TEX5
= 9,
245 VERT_RESULT_TEX6
= 10,
246 VERT_RESULT_TEX7
= 11,
247 VERT_RESULT_PSIZ
= 12,
248 VERT_RESULT_BFC0
= 13,
249 VERT_RESULT_BFC1
= 14,
250 VERT_RESULT_EDGE
= 15,
251 VERT_RESULT_VAR0
= 16, /**< shader varying */
252 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
256 /*********************************************/
259 * Indexes for geometry program attributes.
263 GEOM_ATTRIB_POSITION
= 0,
264 GEOM_ATTRIB_COLOR0
= 1,
265 GEOM_ATTRIB_COLOR1
= 2,
266 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
267 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
268 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
269 GEOM_ATTRIB_POINT_SIZE
= 6,
270 GEOM_ATTRIB_CLIP_VERTEX
= 7,
271 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
272 GEOM_ATTRIB_TEX_COORD
= 9,
274 GEOM_ATTRIB_VAR0
= 16,
275 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
279 * Bitflags for geometry attributes.
280 * These are used in bitfields in many places.
283 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
284 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
285 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
286 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
287 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
288 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
289 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
290 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
291 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
292 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
293 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
295 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
300 * Indexes for geometry program result attributes
305 GEOM_RESULT_COL0
= 1,
306 GEOM_RESULT_COL1
= 2,
307 GEOM_RESULT_SCOL0
= 3,
308 GEOM_RESULT_SCOL1
= 4,
309 GEOM_RESULT_FOGC
= 5,
310 GEOM_RESULT_TEX0
= 6,
311 GEOM_RESULT_TEX1
= 7,
312 GEOM_RESULT_TEX2
= 8,
313 GEOM_RESULT_TEX3
= 9,
314 GEOM_RESULT_TEX4
= 10,
315 GEOM_RESULT_TEX5
= 11,
316 GEOM_RESULT_TEX6
= 12,
317 GEOM_RESULT_TEX7
= 13,
318 GEOM_RESULT_PSIZ
= 14,
319 GEOM_RESULT_CLPV
= 15,
320 GEOM_RESULT_PRID
= 16,
321 GEOM_RESULT_LAYR
= 17,
322 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
323 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
324 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
329 * Indexes for fragment program input attributes.
333 FRAG_ATTRIB_WPOS
= 0,
334 FRAG_ATTRIB_COL0
= 1,
335 FRAG_ATTRIB_COL1
= 2,
336 FRAG_ATTRIB_FOGC
= 3,
337 FRAG_ATTRIB_TEX0
= 4,
338 FRAG_ATTRIB_TEX1
= 5,
339 FRAG_ATTRIB_TEX2
= 6,
340 FRAG_ATTRIB_TEX3
= 7,
341 FRAG_ATTRIB_TEX4
= 8,
342 FRAG_ATTRIB_TEX5
= 9,
343 FRAG_ATTRIB_TEX6
= 10,
344 FRAG_ATTRIB_TEX7
= 11,
345 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
346 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
347 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
348 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
352 * Bitflags for fragment program input attributes.
355 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
356 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
357 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
358 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
359 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
360 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
361 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
362 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
363 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
364 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
365 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
366 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
367 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
368 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
369 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
371 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
372 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
374 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
386 * Fragment program results
390 FRAG_RESULT_DEPTH
= 0,
391 FRAG_RESULT_COLOR
= 1,
392 FRAG_RESULT_DATA0
= 2,
393 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
398 * Indexes for all renderbuffers
402 /* the four standard color buffers */
410 /* optional aux buffer */
412 /* generic renderbuffers */
425 * Bit flags for all renderbuffers
427 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
428 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
429 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
430 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
431 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
432 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
433 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
434 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
435 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
436 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
437 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
438 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
439 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
440 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
441 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
442 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
443 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
444 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
445 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
448 * Mask of all the color buffer bits (but not accum).
450 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
451 BUFFER_BIT_BACK_LEFT | \
452 BUFFER_BIT_FRONT_RIGHT | \
453 BUFFER_BIT_BACK_RIGHT | \
455 BUFFER_BIT_COLOR0 | \
456 BUFFER_BIT_COLOR1 | \
457 BUFFER_BIT_COLOR2 | \
458 BUFFER_BIT_COLOR3 | \
459 BUFFER_BIT_COLOR4 | \
460 BUFFER_BIT_COLOR5 | \
461 BUFFER_BIT_COLOR6 | \
465 /** The pixel transfer path has three color tables: */
468 COLORTABLE_PRECONVOLUTION
,
469 COLORTABLE_POSTCONVOLUTION
,
470 COLORTABLE_POSTCOLORMATRIX
,
472 } gl_colortable_index
;
476 * Data structure for color tables
478 struct gl_color_table
480 GLenum InternalFormat
; /**< The user-specified format */
481 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
482 GLuint Size
; /**< number of entries in table */
483 GLfloat
*TableF
; /**< Color table, floating point values */
484 GLubyte
*TableUB
; /**< Color table, ubyte values */
489 GLubyte LuminanceSize
;
490 GLubyte IntensitySize
;
495 * \name Bit flags used for updating material values.
498 #define MAT_ATTRIB_FRONT_AMBIENT 0
499 #define MAT_ATTRIB_BACK_AMBIENT 1
500 #define MAT_ATTRIB_FRONT_DIFFUSE 2
501 #define MAT_ATTRIB_BACK_DIFFUSE 3
502 #define MAT_ATTRIB_FRONT_SPECULAR 4
503 #define MAT_ATTRIB_BACK_SPECULAR 5
504 #define MAT_ATTRIB_FRONT_EMISSION 6
505 #define MAT_ATTRIB_BACK_EMISSION 7
506 #define MAT_ATTRIB_FRONT_SHININESS 8
507 #define MAT_ATTRIB_BACK_SHININESS 9
508 #define MAT_ATTRIB_FRONT_INDEXES 10
509 #define MAT_ATTRIB_BACK_INDEXES 11
510 #define MAT_ATTRIB_MAX 12
512 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
513 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
514 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
515 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
516 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
517 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
519 #define MAT_INDEX_AMBIENT 0
520 #define MAT_INDEX_DIFFUSE 1
521 #define MAT_INDEX_SPECULAR 2
523 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
524 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
525 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
526 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
527 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
528 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
529 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
530 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
531 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
532 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
533 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
534 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
537 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
538 MAT_BIT_FRONT_AMBIENT | \
539 MAT_BIT_FRONT_DIFFUSE | \
540 MAT_BIT_FRONT_SPECULAR | \
541 MAT_BIT_FRONT_SHININESS | \
542 MAT_BIT_FRONT_INDEXES)
544 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
545 MAT_BIT_BACK_AMBIENT | \
546 MAT_BIT_BACK_DIFFUSE | \
547 MAT_BIT_BACK_SPECULAR | \
548 MAT_BIT_BACK_SHININESS | \
549 MAT_BIT_BACK_INDEXES)
551 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
555 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
556 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
559 * Material shininess lookup table.
563 struct gl_shine_tab
*next
, *prev
;
564 GLfloat tab
[SHINE_TABLE_SIZE
+1];
571 * Light source state.
575 struct gl_light
*next
; /**< double linked list with sentinel */
576 struct gl_light
*prev
;
578 GLfloat Ambient
[4]; /**< ambient color */
579 GLfloat Diffuse
[4]; /**< diffuse color */
580 GLfloat Specular
[4]; /**< specular color */
581 GLfloat EyePosition
[4]; /**< position in eye coordinates */
582 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
583 GLfloat SpotExponent
;
584 GLfloat SpotCutoff
; /**< in degrees */
585 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
586 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
587 GLfloat ConstantAttenuation
;
588 GLfloat LinearAttenuation
;
589 GLfloat QuadraticAttenuation
;
590 GLboolean Enabled
; /**< On/off flag */
593 * \name Derived fields
596 GLbitfield _Flags
; /**< State */
598 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
599 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
600 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
601 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
602 GLfloat _VP_inf_spot_attenuation
;
604 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
605 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
606 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
607 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
608 GLfloat _dli
; /**< CI diffuse light intensity */
609 GLfloat _sli
; /**< CI specular light intensity */
619 GLfloat Ambient
[4]; /**< ambient color */
620 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
621 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
622 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
623 * or GL_SEPARATE_SPECULAR_COLOR */
632 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
637 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
639 struct gl_accum_attrib
641 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
646 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
648 struct gl_colorbuffer_attrib
650 GLuint ClearIndex
; /**< Index to use for glClear */
651 GLclampf ClearColor
[4]; /**< Color to use for glClear */
653 GLuint IndexMask
; /**< Color index write mask */
654 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4];/**< Each flag is 0xff or 0x0 */
656 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
659 * \name alpha testing
662 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
663 GLenum AlphaFunc
; /**< Alpha test function */
664 GLclampf AlphaRef
; /**< Alpha reference value */
671 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
672 GLenum BlendSrcRGB
; /**< Blending source operator */
673 GLenum BlendDstRGB
; /**< Blending destination operator */
674 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
675 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
676 GLenum BlendEquationRGB
; /**< Blending equation */
677 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
678 GLfloat BlendColor
[4]; /**< Blending color */
685 GLenum LogicOp
; /**< Logic operator */
686 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
687 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
688 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
691 GLboolean DitherFlag
; /**< Dither enable flag */
693 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
694 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
699 * Current attribute group (GL_CURRENT_BIT).
701 struct gl_current_attrib
704 * \name Current vertex attributes.
705 * \note Values are valid only after FLUSH_VERTICES has been called.
706 * \note Index and Edgeflag current values are stored as floats in the
707 * SIX and SEVEN attribute slots.
709 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
712 * \name Current raster position attributes (always valid).
713 * \note This set of attributes is very similar to the SWvertex struct.
716 GLfloat RasterPos
[4];
717 GLfloat RasterDistance
;
718 GLfloat RasterColor
[4];
719 GLfloat RasterSecondaryColor
[4];
720 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
721 GLboolean RasterPosValid
;
727 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
729 struct gl_depthbuffer_attrib
731 GLenum Func
; /**< Function for depth buffer compare */
732 GLclampd Clear
; /**< Value to clear depth buffer to */
733 GLboolean Test
; /**< Depth buffering enabled flag */
734 GLboolean Mask
; /**< Depth buffer writable? */
735 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
736 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
741 * Evaluator attribute group (GL_EVAL_BIT).
743 struct gl_eval_attrib
749 GLboolean Map1Color4
;
751 GLboolean Map1Normal
;
752 GLboolean Map1TextureCoord1
;
753 GLboolean Map1TextureCoord2
;
754 GLboolean Map1TextureCoord3
;
755 GLboolean Map1TextureCoord4
;
756 GLboolean Map1Vertex3
;
757 GLboolean Map1Vertex4
;
758 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
759 GLboolean Map2Color4
;
761 GLboolean Map2Normal
;
762 GLboolean Map2TextureCoord1
;
763 GLboolean Map2TextureCoord2
;
764 GLboolean Map2TextureCoord3
;
765 GLboolean Map2TextureCoord4
;
766 GLboolean Map2Vertex3
;
767 GLboolean Map2Vertex4
;
768 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
769 GLboolean AutoNormal
;
773 * \name Map Grid endpoints and divisions and calculated du values
777 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
778 GLint MapGrid2un
, MapGrid2vn
;
779 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
780 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
786 * Fog attribute group (GL_FOG_BIT).
790 GLboolean Enabled
; /**< Fog enabled flag */
791 GLfloat Color
[4]; /**< Fog color */
792 GLfloat Density
; /**< Density >= 0.0 */
793 GLfloat Start
; /**< Start distance in eye coords */
794 GLfloat End
; /**< End distance in eye coords */
795 GLfloat Index
; /**< Fog index */
796 GLenum Mode
; /**< Fog mode */
797 GLboolean ColorSumEnabled
;
798 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
799 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
804 * Hint attribute group (GL_HINT_BIT).
806 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
808 struct gl_hint_attrib
810 GLenum PerspectiveCorrection
;
813 GLenum PolygonSmooth
;
815 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
816 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
817 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
818 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
823 * Histogram attributes.
825 struct gl_histogram_attrib
827 GLuint Width
; /**< number of table entries */
828 GLint Format
; /**< GL_ALPHA, GL_RGB, etc */
829 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /**< the histogram */
830 GLboolean Sink
; /**< terminate image transfer? */
831 GLubyte RedSize
; /**< Bits per counter */
835 GLubyte LuminanceSize
;
840 * Color Min/max state.
842 struct gl_minmax_attrib
846 GLfloat Min
[4], Max
[4]; /**< RGBA */
851 * Image convolution state.
853 struct gl_convolution_attrib
856 GLenum InternalFormat
;
859 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
867 #define LIGHT_SPOT 0x1
868 #define LIGHT_LOCAL_VIEWER 0x2
869 #define LIGHT_POSITIONAL 0x4
870 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
875 * Lighting attribute group (GL_LIGHT_BIT).
877 struct gl_light_attrib
879 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
880 struct gl_lightmodel Model
; /**< Lighting model */
883 * Must flush FLUSH_VERTICES before referencing:
886 struct gl_material Material
; /**< Includes front & back values */
889 GLboolean Enabled
; /**< Lighting enabled flag */
890 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
891 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
892 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
893 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
894 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
895 GLboolean ColorMaterialEnabled
;
896 GLenum ClampVertexColor
;
898 struct gl_light EnabledList
; /**< List sentinel */
901 * Derived state for optimizations:
904 GLboolean _NeedEyeCoords
;
905 GLboolean _NeedVertices
; /**< Use fast shader? */
906 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
907 GLfloat _BaseColor
[2][3];
913 * Line attribute group (GL_LINE_BIT).
915 struct gl_line_attrib
917 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
918 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
919 GLushort StipplePattern
; /**< Stipple pattern */
920 GLint StippleFactor
; /**< Stipple repeat factor */
921 GLfloat Width
; /**< Line width */
926 * Display list attribute group (GL_LIST_BIT).
928 struct gl_list_attrib
935 * Multisample attribute group (GL_MULTISAMPLE_BIT).
937 struct gl_multisample_attrib
940 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
941 GLboolean SampleAlphaToCoverage
;
942 GLboolean SampleAlphaToOne
;
943 GLboolean SampleCoverage
;
944 GLfloat SampleCoverageValue
;
945 GLboolean SampleCoverageInvert
;
950 * A pixelmap (see glPixelMap)
955 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
956 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
961 * Collection of all pixelmaps
965 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
966 struct gl_pixelmap GtoG
;
967 struct gl_pixelmap BtoB
;
968 struct gl_pixelmap AtoA
;
969 struct gl_pixelmap ItoR
;
970 struct gl_pixelmap ItoG
;
971 struct gl_pixelmap ItoB
;
972 struct gl_pixelmap ItoA
;
973 struct gl_pixelmap ItoI
;
974 struct gl_pixelmap StoS
;
979 * Pixel attribute group (GL_PIXEL_MODE_BIT).
981 struct gl_pixel_attrib
983 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
985 /*--- Begin Pixel Transfer State ---*/
986 /* Fields are in the order in which they're applied... */
988 /** Scale & Bias (index shift, offset) */
990 GLfloat RedBias
, RedScale
;
991 GLfloat GreenBias
, GreenScale
;
992 GLfloat BlueBias
, BlueScale
;
993 GLfloat AlphaBias
, AlphaScale
;
994 GLfloat DepthBias
, DepthScale
;
995 GLint IndexShift
, IndexOffset
;
999 /* Note: actual pixel maps are not part of this attrib group */
1000 GLboolean MapColorFlag
;
1001 GLboolean MapStencilFlag
;
1003 /* There are multiple color table stages: */
1004 GLboolean ColorTableEnabled
[COLORTABLE_MAX
];
1005 GLfloat ColorTableScale
[COLORTABLE_MAX
][4]; /**< RGBA */
1006 GLfloat ColorTableBias
[COLORTABLE_MAX
][4]; /**< RGBA */
1008 /* Convolution (GL_EXT_convolution) */
1009 GLboolean Convolution1DEnabled
;
1010 GLboolean Convolution2DEnabled
;
1011 GLboolean Separable2DEnabled
;
1012 GLfloat ConvolutionBorderColor
[3][4]; /**< RGBA */
1013 GLenum ConvolutionBorderMode
[3];
1014 GLfloat ConvolutionFilterScale
[3][4]; /**< RGBA */
1015 GLfloat ConvolutionFilterBias
[3][4]; /**< RGBA */
1016 GLfloat PostConvolutionScale
[4]; /**< RGBA */
1017 GLfloat PostConvolutionBias
[4]; /**< RGBA */
1019 /* Color matrix (GL_SGI_color_matrix) */
1020 /* Note: the color matrix is not part of this attrib group */
1021 GLfloat PostColorMatrixScale
[4]; /**< RGBA */
1022 GLfloat PostColorMatrixBias
[4]; /**< RGBA */
1024 /* Histogram & minmax (GL_EXT_histogram) */
1025 /* Note: histogram and minmax data are not part of this attrib group */
1026 GLboolean HistogramEnabled
;
1027 GLboolean MinMaxEnabled
;
1029 /*--- End Pixel Transfer State ---*/
1032 GLfloat ZoomX
, ZoomY
;
1034 /** GL_SGI_texture_color_table */
1035 GLfloat TextureColorTableScale
[4]; /**< RGBA */
1036 GLfloat TextureColorTableBias
[4]; /**< RGBA */
1041 * Point attribute group (GL_POINT_BIT).
1043 struct gl_point_attrib
1045 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1046 GLfloat Size
; /**< User-specified point size */
1047 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1048 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1049 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1050 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1051 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1052 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1053 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1054 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1059 * Polygon attribute group (GL_POLYGON_BIT).
1061 struct gl_polygon_attrib
1063 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1064 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1065 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1066 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1067 GLboolean CullFlag
; /**< Culling on/off flag */
1068 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1069 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1070 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1071 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1072 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1073 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1074 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1075 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1080 * Scissor attributes (GL_SCISSOR_BIT).
1082 struct gl_scissor_attrib
1084 GLboolean Enabled
; /**< Scissor test enabled? */
1085 GLint X
, Y
; /**< Lower left corner of box */
1086 GLsizei Width
, Height
; /**< Size of box */
1091 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1093 * Three sets of stencil data are tracked so that OpenGL 2.0,
1094 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1095 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1096 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1097 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1098 * GL_EXT_stencil_two_side GL_BACK state.
1100 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1101 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1103 * The derived value \c _TestTwoSide is set when the front-face and back-face
1104 * stencil state are different.
1106 struct gl_stencil_attrib
1108 GLboolean Enabled
; /**< Enabled flag */
1109 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1110 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1111 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1112 GLboolean _TestTwoSide
;
1113 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1114 GLenum Function
[3]; /**< Stencil function */
1115 GLenum FailFunc
[3]; /**< Fail function */
1116 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1117 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1118 GLint Ref
[3]; /**< Reference value */
1119 GLuint ValueMask
[3]; /**< Value mask */
1120 GLuint WriteMask
[3]; /**< Write mask */
1121 GLuint Clear
; /**< Clear value */
1126 * An index for each type of texture object. These correspond to the GL
1127 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1128 * Note: the order is from highest priority to lowest priority.
1132 TEXTURE_2D_ARRAY_INDEX
,
1133 TEXTURE_1D_ARRAY_INDEX
,
1144 * Bit flags for each type of texture object
1145 * Used for Texture.Unit[]._ReallyEnabled flags.
1148 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1149 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1150 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1151 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1152 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1153 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1154 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1159 * TexGenEnabled flags.
1166 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1171 * Bit flag versions of the corresponding GL_ constants.
1174 #define TEXGEN_SPHERE_MAP 0x1
1175 #define TEXGEN_OBJ_LINEAR 0x2
1176 #define TEXGEN_EYE_LINEAR 0x4
1177 #define TEXGEN_REFLECTION_MAP_NV 0x8
1178 #define TEXGEN_NORMAL_MAP_NV 0x10
1180 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1181 TEXGEN_REFLECTION_MAP_NV | \
1182 TEXGEN_NORMAL_MAP_NV)
1183 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1184 TEXGEN_REFLECTION_MAP_NV | \
1185 TEXGEN_NORMAL_MAP_NV | \
1191 /** Tex-gen enabled for texture unit? */
1192 #define ENABLE_TEXGEN(unit) (1 << (unit))
1194 /** Non-identity texture matrix for texture unit? */
1195 #define ENABLE_TEXMAT(unit) (1 << (unit))
1199 * Texel fetch function prototype. We use texel fetch functions to
1200 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1201 * texture images. These functions help to isolate us from the gritty
1202 * details of all the various texture image encodings.
1204 * \param texImage texture image.
1205 * \param col texel column.
1206 * \param row texel row.
1207 * \param img texel image level/layer.
1208 * \param texelOut output texel (up to 4 GLchans)
1210 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1211 GLint col
, GLint row
, GLint img
,
1215 * As above, but returns floats.
1216 * Used for depth component images and for upcoming signed/float
1219 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1220 GLint col
, GLint row
, GLint img
,
1221 GLfloat
*texelOut
);
1224 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1225 GLint col
, GLint row
, GLint img
,
1230 * Texture image state. Describes the dimensions of a texture image,
1231 * the texel format and pointers to Texel Fetch functions.
1233 struct gl_texture_image
1235 GLint InternalFormat
; /**< Internal format as given by the user */
1236 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1237 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1238 * GL_INTENSITY, GL_COLOR_INDEX,
1239 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1240 * only. Used for choosing TexEnv arithmetic.
1242 GLuint TexFormat
; /**< The actual format: MESA_FORMAT_x */
1244 GLuint Border
; /**< 0 or 1 */
1245 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1246 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1247 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1248 GLuint Width2
; /**< = Width - 2*Border */
1249 GLuint Height2
; /**< = Height - 2*Border */
1250 GLuint Depth2
; /**< = Depth - 2*Border */
1251 GLuint WidthLog2
; /**< = log2(Width2) */
1252 GLuint HeightLog2
; /**< = log2(Height2) */
1253 GLuint DepthLog2
; /**< = log2(Depth2) */
1254 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1255 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1256 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1257 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1258 GLboolean IsClientData
; /**< Data owned by client? */
1259 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1261 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1263 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1264 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1266 GLuint RowStride
; /**< Padded width in units of texels */
1267 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1268 each 2D slice in 'Data', in texels */
1269 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1272 * \name For device driver:
1275 void *DriverData
; /**< Arbitrary device driver data */
1281 * Indexes for cube map faces.
1296 * Texture object state. Contains the array of mipmap images, border color,
1297 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1300 struct gl_texture_object
1302 _glthread_Mutex Mutex
; /**< for thread safety */
1303 GLint RefCount
; /**< reference count */
1304 GLuint Name
; /**< the user-visible texture object ID */
1305 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1306 GLfloat Priority
; /**< in [0,1] */
1311 } BorderColor
; /**< Interpreted according to texture format */
1312 GLenum WrapS
; /**< S-axis texture image wrap mode */
1313 GLenum WrapT
; /**< T-axis texture image wrap mode */
1314 GLenum WrapR
; /**< R-axis texture image wrap mode */
1315 GLenum MinFilter
; /**< minification filter */
1316 GLenum MagFilter
; /**< magnification filter */
1317 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1318 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1319 GLfloat LodBias
; /**< OpenGL 1.4 */
1320 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1321 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1322 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1323 GLenum CompareMode
; /**< GL_ARB_shadow */
1324 GLenum CompareFunc
; /**< GL_ARB_shadow */
1325 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1326 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1327 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1328 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1329 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1330 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1331 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1332 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1333 GLboolean _Complete
; /**< Is texture object complete? */
1334 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1335 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1337 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1338 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1340 /** GL_EXT_paletted_texture */
1341 struct gl_color_table Palette
;
1344 * \name For device driver.
1345 * Note: instead of attaching driver data to this pointer, it's preferable
1346 * to instead use this struct as a base class for your own texture object
1347 * class. Driver->NewTextureObject() can be used to implement the
1350 void *DriverData
; /**< Arbitrary device driver data */
1354 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1355 #define MAX_COMBINER_TERMS 4
1359 * Texture combine environment state.
1361 struct gl_tex_env_combine_state
1363 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1364 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1365 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1366 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1367 GLenum SourceA
[MAX_COMBINER_TERMS
];
1368 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1369 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1370 GLenum OperandA
[MAX_COMBINER_TERMS
];
1371 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1372 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1373 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1374 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1379 * Texture coord generation state.
1383 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1384 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1385 GLfloat ObjectPlane
[4];
1386 GLfloat EyePlane
[4];
1391 * Texture unit state. Contains enable flags, texture environment/function/
1392 * combiners, texgen state, pointers to current texture objects and
1393 * post-filter color tables.
1395 struct gl_texture_unit
1397 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1398 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1400 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1401 GLfloat EnvColor
[4];
1403 struct gl_texgen GenS
;
1404 struct gl_texgen GenT
;
1405 struct gl_texgen GenR
;
1406 struct gl_texgen GenQ
;
1407 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1408 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1410 GLfloat LodBias
; /**< for biasing mipmap levels */
1412 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1415 * \name GL_EXT_texture_env_combine
1417 struct gl_tex_env_combine_state Combine
;
1420 * Derived state based on \c EnvMode and the \c BaseFormat of the
1421 * currently enabled texture.
1423 struct gl_tex_env_combine_state _EnvMode
;
1426 * Currently enabled combiner state. This will point to either
1427 * \c Combine or \c _EnvMode.
1429 struct gl_tex_env_combine_state
*_CurrentCombine
;
1431 /** Current texture object pointers */
1432 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1434 /** Points to highest priority, complete and enabled texture object */
1435 struct gl_texture_object
*_Current
;
1437 /** GL_SGI_texture_color_table */
1439 struct gl_color_table ColorTable
;
1440 struct gl_color_table ProxyColorTable
;
1441 GLboolean ColorTableEnabled
;
1447 * Texture attribute group (GL_TEXTURE_BIT).
1449 struct gl_texture_attrib
1451 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1452 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1454 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1456 /** GL_ARB_seamless_cubemap */
1457 GLboolean CubeMapSeamless
;
1459 /** GL_EXT_shared_texture_palette */
1460 GLboolean SharedPalette
;
1461 struct gl_color_table Palette
;
1463 /** Texture units/samplers used by vertex or fragment texturing */
1464 GLbitfield _EnabledUnits
;
1466 /** Texture coord units/sets used for fragment texturing */
1467 GLbitfield _EnabledCoordUnits
;
1469 /** Texture coord units that have texgen enabled */
1470 GLbitfield _TexGenEnabled
;
1472 /** Texture coord units that have non-identity matrices */
1473 GLbitfield _TexMatEnabled
;
1475 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1476 GLbitfield _GenFlags
;
1481 * Transformation attribute group (GL_TRANSFORM_BIT).
1483 struct gl_transform_attrib
1485 GLenum MatrixMode
; /**< Matrix mode */
1486 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1487 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1488 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1489 GLboolean Normalize
; /**< Normalize all normals? */
1490 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1491 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1492 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1494 GLboolean CullVertexFlag
; /**< True if GL_CULL_VERTEX_EXT is enabled */
1495 GLfloat CullEyePos
[4];
1496 GLfloat CullObjPos
[4];
1501 * Viewport attribute group (GL_VIEWPORT_BIT).
1503 struct gl_viewport_attrib
1505 GLint X
, Y
; /**< position */
1506 GLsizei Width
, Height
; /**< size */
1507 GLfloat Near
, Far
; /**< Depth buffer range */
1508 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1513 * GL_ARB_vertex/pixel_buffer_object buffer object
1515 struct gl_buffer_object
1517 _glthread_Mutex Mutex
;
1520 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1521 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1522 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1523 /** Fields describing a mapped buffer */
1525 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1526 GLvoid
*Pointer
; /**< User-space address of mapping */
1527 GLintptr Offset
; /**< Mapped offset */
1528 GLsizeiptr Length
; /**< Mapped length */
1530 GLboolean Written
; /**< Ever written to? (for debugging) */
1531 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1536 * Client pixel packing/unpacking attributes
1538 struct gl_pixelstore_attrib
1546 GLboolean SwapBytes
;
1548 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1549 GLboolean Invert
; /**< GL_MESA_pack_invert */
1550 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1555 * Client vertex array attributes
1557 struct gl_client_array
1559 GLint Size
; /**< components per element (1,2,3,4) */
1560 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1561 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1562 GLsizei Stride
; /**< user-specified stride */
1563 GLsizei StrideB
; /**< actual stride in bytes */
1564 const GLubyte
*Ptr
; /**< Points to array data */
1565 GLboolean Enabled
; /**< Enabled flag is a boolean */
1566 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1567 GLuint _ElementSize
; /**< size of each element in bytes */
1569 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1570 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1575 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1576 * extension, but a nice encapsulation in any case.
1578 struct gl_array_object
1580 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1584 _glthread_Mutex Mutex
;
1585 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1587 /** Conventional vertex arrays */
1589 struct gl_client_array Vertex
;
1590 struct gl_client_array Weight
;
1591 struct gl_client_array Normal
;
1592 struct gl_client_array Color
;
1593 struct gl_client_array SecondaryColor
;
1594 struct gl_client_array FogCoord
;
1595 struct gl_client_array Index
;
1596 struct gl_client_array EdgeFlag
;
1597 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1598 struct gl_client_array PointSize
;
1602 * Generic arrays for vertex programs/shaders.
1603 * For NV vertex programs, these attributes alias and take priority
1604 * over the conventional attribs above. For ARB vertex programs and
1605 * GLSL vertex shaders, these attributes are separate.
1607 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1609 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1610 GLbitfield _Enabled
;
1613 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1614 * we can determine the max legal (in bounds) glDrawElements array index.
1621 * Vertex array state
1623 struct gl_array_attrib
1625 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1626 struct gl_array_object
*ArrayObj
;
1628 /** The default vertex array object */
1629 struct gl_array_object
*DefaultArrayObj
;
1631 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1632 struct _mesa_HashTable
*Objects
;
1634 GLint ActiveTexture
; /**< Client Active Texture */
1635 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1636 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1638 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1639 GLboolean PrimitiveRestart
;
1640 GLuint RestartIndex
;
1642 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1644 /* GL_ARB_vertex_buffer_object */
1645 struct gl_buffer_object
*ArrayBufferObj
;
1646 struct gl_buffer_object
*ElementArrayBufferObj
;
1651 * Feedback buffer state
1656 GLbitfield _Mask
; /**< FB_* bits */
1664 * Selection buffer state
1668 GLuint
*Buffer
; /**< selection buffer */
1669 GLuint BufferSize
; /**< size of the selection buffer */
1670 GLuint BufferCount
; /**< number of values in the selection buffer */
1671 GLuint Hits
; /**< number of records in the selection buffer */
1672 GLuint NameStackDepth
; /**< name stack depth */
1673 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1674 GLboolean HitFlag
; /**< hit flag */
1675 GLfloat HitMinZ
; /**< minimum hit depth */
1676 GLfloat HitMaxZ
; /**< maximum hit depth */
1681 * 1-D Evaluator control points
1685 GLuint Order
; /**< Number of control points */
1686 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1687 GLfloat
*Points
; /**< Points to contiguous control points */
1692 * 2-D Evaluator control points
1696 GLuint Uorder
; /**< Number of control points in U dimension */
1697 GLuint Vorder
; /**< Number of control points in V dimension */
1700 GLfloat
*Points
; /**< Points to contiguous control points */
1705 * All evaluator control point state
1707 struct gl_evaluators
1713 struct gl_1d_map Map1Vertex3
;
1714 struct gl_1d_map Map1Vertex4
;
1715 struct gl_1d_map Map1Index
;
1716 struct gl_1d_map Map1Color4
;
1717 struct gl_1d_map Map1Normal
;
1718 struct gl_1d_map Map1Texture1
;
1719 struct gl_1d_map Map1Texture2
;
1720 struct gl_1d_map Map1Texture3
;
1721 struct gl_1d_map Map1Texture4
;
1722 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1729 struct gl_2d_map Map2Vertex3
;
1730 struct gl_2d_map Map2Vertex4
;
1731 struct gl_2d_map Map2Index
;
1732 struct gl_2d_map Map2Color4
;
1733 struct gl_2d_map Map2Normal
;
1734 struct gl_2d_map Map2Texture1
;
1735 struct gl_2d_map Map2Texture2
;
1736 struct gl_2d_map Map2Texture3
;
1737 struct gl_2d_map Map2Texture4
;
1738 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1744 * Names of the various vertex/fragment program register files, etc.
1746 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1747 * All values should fit in a 4-bit field.
1749 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1750 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1751 * be "uniform" variables since they can only be set outside glBegin/End.
1752 * They're also all stored in the same Parameters array.
1756 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1757 PROGRAM_INPUT
, /**< machine->Inputs[] */
1758 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1759 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1760 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1761 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1762 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1763 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1764 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1765 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1766 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1767 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1768 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1769 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1774 /** Vertex and fragment instructions */
1775 struct prog_instruction
;
1776 struct gl_program_parameter_list
;
1777 struct gl_uniform_list
;
1781 * Base class for any kind of program object
1786 GLubyte
*String
; /**< Null-terminated program text */
1788 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1789 GLenum Format
; /**< String encoding format */
1792 struct prog_instruction
*Instructions
;
1794 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1795 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1796 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1797 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1798 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1799 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1800 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1803 /** Named parameters, constants, etc. from program text */
1804 struct gl_program_parameter_list
*Parameters
;
1805 /** Numbered local parameters */
1806 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1808 /** Vertex/fragment shader varying vars */
1809 struct gl_program_parameter_list
*Varying
;
1810 /** Vertex program user-defined attributes */
1811 struct gl_program_parameter_list
*Attributes
;
1813 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1814 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1815 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1816 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1818 /** Bitmask of which register files are read/written with indirect
1819 * addressing. Mask of (1 << PROGRAM_x) bits.
1821 GLbitfield IndirectRegisterFiles
;
1823 /** Logical counts */
1825 GLuint NumInstructions
;
1826 GLuint NumTemporaries
;
1827 GLuint NumParameters
;
1828 GLuint NumAttributes
;
1829 GLuint NumAddressRegs
;
1830 GLuint NumAluInstructions
;
1831 GLuint NumTexInstructions
;
1832 GLuint NumTexIndirections
;
1834 /** Native, actual h/w counts */
1836 GLuint NumNativeInstructions
;
1837 GLuint NumNativeTemporaries
;
1838 GLuint NumNativeParameters
;
1839 GLuint NumNativeAttributes
;
1840 GLuint NumNativeAddressRegs
;
1841 GLuint NumNativeAluInstructions
;
1842 GLuint NumNativeTexInstructions
;
1843 GLuint NumNativeTexIndirections
;
1848 /** Vertex program object */
1849 struct gl_vertex_program
1851 struct gl_program Base
; /**< base class */
1852 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1853 GLboolean IsPositionInvariant
;
1857 /** Geometry program object */
1858 struct gl_geometry_program
1860 struct gl_program Base
; /**< base class */
1863 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1864 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1865 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1869 /** Fragment program object */
1870 struct gl_fragment_program
1872 struct gl_program Base
; /**< base class */
1874 GLboolean UsesKill
; /**< shader uses KIL instruction */
1875 GLboolean OriginUpperLeft
;
1876 GLboolean PixelCenterInteger
;
1881 * State common to vertex and fragment programs.
1883 struct gl_program_state
1885 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1886 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1891 * Context state for vertex programs.
1893 struct gl_vertex_program_state
1895 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1896 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1897 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1898 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1899 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1901 /** Currently enabled and valid vertex program (including internal
1902 * programs, user-defined vertex programs and GLSL vertex shaders).
1903 * This is the program we must use when rendering.
1905 struct gl_vertex_program
*_Current
;
1907 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1909 /* For GL_NV_vertex_program only: */
1910 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1911 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1913 /** Should fixed-function T&L be implemented with a vertex prog? */
1914 GLboolean _MaintainTnlProgram
;
1916 /** Program to emulate fixed-function T&L (see above) */
1917 struct gl_vertex_program
*_TnlProgram
;
1919 /** Cache of fixed-function programs */
1920 struct gl_program_cache
*Cache
;
1922 GLboolean _Overriden
;
1927 * Context state for geometry programs.
1929 struct gl_geometry_program_state
1931 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1932 GLboolean _Enabled
; /**< Enabled and valid program? */
1933 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1935 /** Currently enabled and valid program (including internal programs
1936 * and compiled shader programs).
1938 struct gl_geometry_program
*_Current
;
1940 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1942 /** Cache of fixed-function programs */
1943 struct gl_program_cache
*Cache
;
1947 * Context state for fragment programs.
1949 struct gl_fragment_program_state
1951 GLboolean Enabled
; /**< User-set fragment program enable flag */
1952 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1953 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1955 /** Currently enabled and valid fragment program (including internal
1956 * programs, user-defined fragment programs and GLSL fragment shaders).
1957 * This is the program we must use when rendering.
1959 struct gl_fragment_program
*_Current
;
1961 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1963 /** Should fixed-function texturing be implemented with a fragment prog? */
1964 GLboolean _MaintainTexEnvProgram
;
1966 /** Program to emulate fixed-function texture env/combine (see above) */
1967 struct gl_fragment_program
*_TexEnvProgram
;
1969 /** Cache of fixed-function programs */
1970 struct gl_program_cache
*Cache
;
1975 * ATI_fragment_shader runtime state
1977 #define ATI_FS_INPUT_PRIMARY 0
1978 #define ATI_FS_INPUT_SECONDARY 1
1980 struct atifs_instruction
;
1981 struct atifs_setupinst
;
1984 * ATI fragment shader
1986 struct ati_fragment_shader
1990 struct atifs_instruction
*Instructions
[2];
1991 struct atifs_setupinst
*SetupInst
[2];
1992 GLfloat Constants
[8][4];
1993 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
1994 GLubyte numArithInstr
[2];
1995 GLubyte regsAssigned
[2];
1996 GLubyte NumPasses
; /**< 1 or 2 */
1998 GLubyte last_optype
;
1999 GLboolean interpinp1
;
2005 * Context state for GL_ATI_fragment_shader
2007 struct gl_ati_fragment_shader_state
2010 GLboolean _Enabled
; /**< enabled and valid shader? */
2011 GLboolean Compiling
;
2012 GLfloat GlobalConstants
[8][4];
2013 struct ati_fragment_shader
*Current
;
2018 * Occlusion/timer query object.
2020 struct gl_query_object
2022 GLenum Target
; /**< The query target, when active */
2023 GLuint Id
; /**< hash table ID/name */
2024 GLuint64EXT Result
; /**< the counter */
2025 GLboolean Active
; /**< inside Begin/EndQuery */
2026 GLboolean Ready
; /**< result is ready? */
2031 * Context state for query objects.
2033 struct gl_query_state
2035 struct _mesa_HashTable
*QueryObjects
;
2036 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2037 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2039 /** GL_NV_conditional_render */
2040 struct gl_query_object
*CondRenderQuery
;
2042 /** GL_EXT_transform_feedback */
2043 struct gl_query_object
*PrimitivesGenerated
;
2044 struct gl_query_object
*PrimitivesWritten
;
2046 /** GL_ARB_timer_query */
2047 struct gl_query_object
*TimeElapsed
;
2049 GLenum CondRenderMode
;
2053 /** Sync object state */
2054 struct gl_sync_object
{
2055 struct simple_node link
;
2056 GLenum Type
; /**< GL_SYNC_FENCE */
2057 GLuint Name
; /**< Fence name */
2058 GLint RefCount
; /**< Reference count */
2059 GLboolean DeletePending
; /**< Object was deleted while there were still
2060 * live references (e.g., sync not yet finished)
2062 GLenum SyncCondition
;
2063 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2064 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2068 /** Set by #pragma directives */
2069 struct gl_sl_pragmas
2071 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2072 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2073 GLboolean Optimize
; /**< defaults on */
2074 GLboolean Debug
; /**< defaults off */
2079 * A GLSL vertex or fragment shader object.
2083 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2084 GLuint Name
; /**< AKA the handle */
2085 GLint RefCount
; /**< Reference count */
2086 GLboolean DeletePending
;
2087 GLboolean CompileStatus
;
2088 GLboolean Main
; /**< shader defines main() */
2089 GLboolean UnresolvedRefs
;
2090 const GLchar
*Source
; /**< Source code string */
2091 GLuint SourceChecksum
; /**< for debug/logging purposes */
2092 struct gl_program
*Program
; /**< Post-compile assembly code */
2094 struct gl_sl_pragmas Pragmas
;
2096 unsigned Version
; /**< GLSL version used for linking */
2098 struct exec_list
*ir
;
2099 struct glsl_symbol_table
*symbols
;
2101 /** Shaders containing built-in functions that are used for linking. */
2102 struct gl_shader
*builtins_to_link
[16];
2103 unsigned num_builtins_to_link
;
2108 * A GLSL program object.
2109 * Basically a linked collection of vertex and fragment shaders.
2111 struct gl_shader_program
2113 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2114 GLuint Name
; /**< aka handle or ID */
2115 GLint RefCount
; /**< Reference count */
2116 GLboolean DeletePending
;
2118 GLuint NumShaders
; /**< number of attached shaders */
2119 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2121 /** User-defined attribute bindings (glBindAttribLocation) */
2122 struct gl_program_parameter_list
*Attributes
;
2124 /** Transform feedback varyings */
2128 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2129 } TransformFeedback
;
2131 /** Geometry shader state - copied into gl_geometry_program at link time */
2134 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2135 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2136 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2139 /* post-link info: */
2140 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2141 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2142 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2143 struct gl_uniform_list
*Uniforms
;
2144 struct gl_program_parameter_list
*Varying
;
2145 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2146 GLboolean Validated
;
2147 GLboolean _Used
; /**< Ever used for drawing? */
2150 unsigned Version
; /**< GLSL version used for linking */
2153 * Per-stage shaders resulting from the first stage of linking.
2156 GLuint _NumLinkedShaders
;
2157 struct gl_shader
*_LinkedShaders
[2];
2162 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2163 #define GLSL_LOG 0x2 /**< Write shaders to files */
2164 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2165 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2166 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2167 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2168 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2169 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2173 * Context state for GLSL vertex/fragment shaders.
2175 struct gl_shader_state
2177 struct gl_shader_program
*CurrentProgram
; /**< The user-bound program */
2178 /** Driver-selectable options: */
2179 GLboolean EmitHighLevelInstructions
; /**< IF/ELSE/ENDIF vs. BRA, etc. */
2180 GLboolean EmitContReturn
; /**< Emit CONT/RET opcodes? */
2181 GLboolean EmitCondCodes
; /**< Use condition codes? */
2182 GLboolean EmitComments
; /**< Annotated instructions */
2183 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2185 * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't
2186 * support control flow.
2188 GLboolean EmitNoIfs
;
2190 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2191 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2196 * Transform feedback object state
2198 struct gl_transform_feedback_object
2200 GLuint Name
; /**< AKA the object ID */
2202 GLboolean Active
; /**< Is transform feedback enabled? */
2203 GLboolean Paused
; /**< Is transform feedback paused? */
2205 /** The feedback buffers */
2206 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2207 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2209 /** Start of feedback data in dest buffer */
2210 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2211 /** Max data to put into dest buffer (in bytes) */
2212 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2217 * Context state for transform feedback.
2219 struct gl_transform_feedback
2221 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2223 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2225 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2226 struct gl_buffer_object
*CurrentBuffer
;
2228 /** The table of all transform feedback objects */
2229 struct _mesa_HashTable
*Objects
;
2231 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2232 struct gl_transform_feedback_object
*CurrentObject
;
2234 /** The default xform-fb object (Name==0) */
2235 struct gl_transform_feedback_object
*DefaultObject
;
2241 * State which can be shared by multiple contexts:
2243 struct gl_shared_state
2245 _glthread_Mutex Mutex
; /**< for thread safety */
2246 GLint RefCount
; /**< Reference count */
2247 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2248 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2250 /** Default texture objects (shared by all texture units) */
2251 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2253 /** Fallback texture used when a bound texture is incomplete */
2254 struct gl_texture_object
*FallbackTex
;
2257 * \name Thread safety and statechange notification for texture
2260 * \todo Improve the granularity of locking.
2263 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2264 GLuint TextureStateStamp
; /**< state notification for shared tex */
2267 /** Default buffer object for vertex arrays that aren't in VBOs */
2268 struct gl_buffer_object
*NullBufferObj
;
2271 * \name Vertex/geometry/fragment programs
2274 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2275 struct gl_vertex_program
*DefaultVertexProgram
;
2276 struct gl_fragment_program
*DefaultFragmentProgram
;
2277 struct gl_geometry_program
*DefaultGeometryProgram
;
2280 /* GL_ATI_fragment_shader */
2281 struct _mesa_HashTable
*ATIShaders
;
2282 struct ati_fragment_shader
*DefaultFragmentShader
;
2284 struct _mesa_HashTable
*BufferObjects
;
2286 /** Table of both gl_shader and gl_shader_program objects */
2287 struct _mesa_HashTable
*ShaderObjects
;
2289 /* GL_EXT_framebuffer_object */
2290 struct _mesa_HashTable
*RenderBuffers
;
2291 struct _mesa_HashTable
*FrameBuffers
;
2294 struct simple_node SyncObjects
;
2296 void *DriverData
; /**< Device driver shared state */
2303 * A renderbuffer stores colors or depth values or stencil values.
2304 * A framebuffer object will have a collection of these.
2305 * Data are read/written to the buffer with a handful of Get/Put functions.
2307 * Instances of this object are allocated with the Driver's NewRenderbuffer
2308 * hook. Drivers will likely wrap this class inside a driver-specific
2309 * class to simulate inheritance.
2311 struct gl_renderbuffer
2313 #define RB_MAGIC 0xaabbccdd
2314 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2315 _glthread_Mutex Mutex
; /**< for thread safety */
2316 GLuint ClassID
; /**< Useful for drivers */
2319 GLuint Width
, Height
;
2320 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2322 GLenum InternalFormat
; /**< The user-specified format */
2323 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2324 GL_STENCIL_INDEX. */
2325 GLuint Format
; /**< The actual format: MESA_FORMAT_x */
2329 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2330 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2332 /* Used to wrap one renderbuffer around another: */
2333 struct gl_renderbuffer
*Wrapped
;
2335 /* Delete this renderbuffer */
2336 void (*Delete
)(struct gl_renderbuffer
*rb
);
2338 /* Allocate new storage for this renderbuffer */
2339 GLboolean (*AllocStorage
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2340 GLenum internalFormat
,
2341 GLuint width
, GLuint height
);
2343 /* Lock/Unlock are called before/after calling the Get/Put functions.
2344 * Not sure this is the right place for these yet.
2345 void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2346 void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2349 /* Return a pointer to the element/pixel at (x,y).
2350 * Should return NULL if the buffer memory can't be directly addressed.
2352 void *(*GetPointer
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2355 /* Get/Read a row of values.
2356 * The values will be of format _BaseFormat and type DataType.
2358 void (*GetRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2359 GLint x
, GLint y
, void *values
);
2361 /* Get/Read values at arbitrary locations.
2362 * The values will be of format _BaseFormat and type DataType.
2364 void (*GetValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2365 const GLint x
[], const GLint y
[], void *values
);
2367 /* Put/Write a row of values.
2368 * The values will be of format _BaseFormat and type DataType.
2370 void (*PutRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2371 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2373 /* Put/Write a row of RGB values. This is a special-case routine that's
2374 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2375 * a common case for glDrawPixels and some triangle routines.
2376 * The values will be of format GL_RGB and type DataType.
2378 void (*PutRowRGB
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2379 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2382 /* Put/Write a row of identical values.
2383 * The values will be of format _BaseFormat and type DataType.
2385 void (*PutMonoRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2386 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2388 /* Put/Write values at arbitrary locations.
2389 * The values will be of format _BaseFormat and type DataType.
2391 void (*PutValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2392 const GLint x
[], const GLint y
[], const void *values
,
2393 const GLubyte
*mask
);
2394 /* Put/Write identical values at arbitrary locations.
2395 * The values will be of format _BaseFormat and type DataType.
2397 void (*PutMonoValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2398 GLuint count
, const GLint x
[], const GLint y
[],
2399 const void *value
, const GLubyte
*mask
);
2404 * A renderbuffer attachment points to either a texture object (and specifies
2405 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2407 struct gl_renderbuffer_attachment
2409 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2413 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2414 * application supplied renderbuffer object.
2416 struct gl_renderbuffer
*Renderbuffer
;
2419 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2420 * supplied texture object.
2422 struct gl_texture_object
*Texture
;
2423 GLuint TextureLevel
; /**< Attached mipmap level. */
2424 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2425 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2426 * and 2D array textures */
2431 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2432 * In C++ terms, think of this as a base class from which device drivers
2433 * will make derived classes.
2435 struct gl_framebuffer
2437 _glthread_Mutex Mutex
; /**< for thread safety */
2439 * If zero, this is a window system framebuffer. If non-zero, this
2440 * is a FBO framebuffer; note that for some devices (i.e. those with
2441 * a natural pixel coordinate system for FBOs that differs from the
2442 * OpenGL/Mesa coordinate system), this means that the viewport,
2443 * polygon face orientation, and polygon stipple will have to be inverted.
2448 GLboolean DeletePending
;
2451 * The framebuffer's visual. Immutable if this is a window system buffer.
2452 * Computed from attachments if user-made FBO.
2456 GLboolean Initialized
;
2458 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2460 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2462 GLint _Xmin
, _Xmax
; /**< inclusive */
2463 GLint _Ymin
, _Ymax
; /**< exclusive */
2466 /** \name Derived Z buffer stuff */
2468 GLuint _DepthMax
; /**< Max depth buffer value */
2469 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2470 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2473 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2476 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2477 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2479 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2480 * attribute group and GL_PIXEL attribute group, respectively.
2482 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2483 GLenum ColorReadBuffer
;
2485 /** Computed from ColorDraw/ReadBuffer above */
2486 GLuint _NumColorDrawBuffers
;
2487 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2488 GLint _ColorReadBufferIndex
; /* -1 = None */
2489 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2490 struct gl_renderbuffer
*_ColorReadBuffer
;
2492 /** The Actual depth/stencil buffers to use. May be wrappers around the
2493 * depth/stencil buffers attached above. */
2494 struct gl_renderbuffer
*_DepthBuffer
;
2495 struct gl_renderbuffer
*_StencilBuffer
;
2497 /** Delete this framebuffer */
2498 void (*Delete
)(struct gl_framebuffer
*fb
);
2503 * Limits for vertex and fragment programs/shaders.
2505 struct gl_program_constants
2507 /* logical limits */
2508 GLuint MaxInstructions
;
2509 GLuint MaxAluInstructions
;
2510 GLuint MaxTexInstructions
;
2511 GLuint MaxTexIndirections
;
2514 GLuint MaxAddressRegs
;
2515 GLuint MaxParameters
;
2516 GLuint MaxLocalParams
;
2517 GLuint MaxEnvParams
;
2518 /* native/hardware limits */
2519 GLuint MaxNativeInstructions
;
2520 GLuint MaxNativeAluInstructions
;
2521 GLuint MaxNativeTexInstructions
;
2522 GLuint MaxNativeTexIndirections
;
2523 GLuint MaxNativeAttribs
;
2524 GLuint MaxNativeTemps
;
2525 GLuint MaxNativeAddressRegs
;
2526 GLuint MaxNativeParameters
;
2528 GLuint MaxUniformComponents
;
2529 /* GL_ARB_geometry_shader4 */
2530 GLuint MaxGeometryTextureImageUnits
;
2531 GLuint MaxGeometryVaryingComponents
;
2532 GLuint MaxVertexVaryingComponents
;
2533 GLuint MaxGeometryUniformComponents
;
2534 GLuint MaxGeometryOutputVertices
;
2535 GLuint MaxGeometryTotalOutputComponents
;
2540 * Constants which may be overridden by device driver during context creation
2541 * but are never changed after that.
2545 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2546 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2547 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2548 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2549 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2550 GLuint MaxTextureCoordUnits
;
2551 GLuint MaxTextureImageUnits
;
2552 GLuint MaxVertexTextureImageUnits
;
2553 GLuint MaxCombinedTextureImageUnits
;
2554 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2555 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2556 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2558 GLuint MaxArrayLockSize
;
2562 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2563 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2564 GLfloat PointSizeGranularity
;
2565 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2566 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2567 GLfloat LineWidthGranularity
;
2569 GLuint MaxColorTableSize
;
2570 GLuint MaxConvolutionWidth
;
2571 GLuint MaxConvolutionHeight
;
2573 GLuint MaxClipPlanes
;
2575 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2576 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2578 GLuint MaxViewportWidth
, MaxViewportHeight
;
2580 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2581 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2582 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2583 GLuint MaxProgramMatrices
;
2584 GLuint MaxProgramMatrixStackDepth
;
2586 /** vertex array / buffer object bounds checking */
2587 GLboolean CheckArrayBounds
;
2589 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2591 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2592 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2593 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2595 GLuint MaxVarying
; /**< Number of float[4] varying parameters */
2597 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2598 GLbitfield SupportedBumpUnits
;
2601 * Maximum amount of time, measured in nanseconds, that the server can wait.
2603 GLuint64 MaxServerWaitTimeout
;
2605 /** GL_EXT_provoking_vertex */
2606 GLboolean QuadsFollowProvokingVertexConvention
;
2608 /** OpenGL version 3.0 */
2609 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2611 /** OpenGL version 3.2 */
2612 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2614 /** GL_EXT_transform_feedback */
2615 GLuint MaxTransformFeedbackSeparateAttribs
;
2616 GLuint MaxTransformFeedbackSeparateComponents
;
2617 GLuint MaxTransformFeedbackInterleavedComponents
;
2622 * Enable flag for each OpenGL extension. Different device drivers will
2623 * enable different extensions at runtime.
2625 struct gl_extensions
2627 GLboolean dummy
; /* don't remove this! */
2628 GLboolean ARB_blend_func_extended
;
2629 GLboolean ARB_copy_buffer
;
2630 GLboolean ARB_depth_buffer_float
;
2631 GLboolean ARB_depth_clamp
;
2632 GLboolean ARB_depth_texture
;
2633 GLboolean ARB_draw_buffers
;
2634 GLboolean ARB_draw_elements_base_vertex
;
2635 GLboolean ARB_draw_instanced
;
2636 GLboolean ARB_fragment_coord_conventions
;
2637 GLboolean ARB_fragment_program
;
2638 GLboolean ARB_fragment_program_shadow
;
2639 GLboolean ARB_fragment_shader
;
2640 GLboolean ARB_framebuffer_object
;
2641 GLboolean ARB_explicit_attrib_location
;
2642 GLboolean ARB_geometry_shader4
;
2643 GLboolean ARB_half_float_pixel
;
2644 GLboolean ARB_half_float_vertex
;
2645 GLboolean ARB_imaging
;
2646 GLboolean ARB_instanced_arrays
;
2647 GLboolean ARB_map_buffer_range
;
2648 GLboolean ARB_multisample
;
2649 GLboolean ARB_multitexture
;
2650 GLboolean ARB_occlusion_query
;
2651 GLboolean ARB_occlusion_query2
;
2652 GLboolean ARB_point_sprite
;
2653 GLboolean ARB_sampler_objects
;
2654 GLboolean ARB_seamless_cube_map
;
2655 GLboolean ARB_shader_objects
;
2656 GLboolean ARB_shading_language_100
;
2657 GLboolean ARB_shading_language_120
;
2658 GLboolean ARB_shadow
;
2659 GLboolean ARB_shadow_ambient
;
2661 GLboolean ARB_texture_border_clamp
;
2662 GLboolean ARB_texture_buffer_object
;
2663 GLboolean ARB_texture_compression
;
2664 GLboolean ARB_texture_cube_map
;
2665 GLboolean ARB_texture_env_combine
;
2666 GLboolean ARB_texture_env_crossbar
;
2667 GLboolean ARB_texture_env_dot3
;
2668 GLboolean ARB_texture_float
;
2669 GLboolean ARB_texture_mirrored_repeat
;
2670 GLboolean ARB_texture_multisample
;
2671 GLboolean ARB_texture_non_power_of_two
;
2672 GLboolean ARB_texture_rg
;
2673 GLboolean ARB_texture_rgb10_a2ui
;
2674 GLboolean ARB_timer_query
;
2675 GLboolean ARB_transform_feedback2
;
2676 GLboolean ARB_transpose_matrix
;
2677 GLboolean ARB_uniform_buffer_object
;
2678 GLboolean ARB_vertex_array_object
;
2679 GLboolean ARB_vertex_buffer_object
;
2680 GLboolean ARB_vertex_program
;
2681 GLboolean ARB_vertex_shader
;
2682 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2683 GLboolean ARB_window_pos
;
2686 GLboolean EXT_blend_color
;
2687 GLboolean EXT_blend_equation_separate
;
2688 GLboolean EXT_blend_func_separate
;
2689 GLboolean EXT_blend_logic_op
;
2690 GLboolean EXT_blend_minmax
;
2691 GLboolean EXT_blend_subtract
;
2692 GLboolean EXT_clip_volume_hint
;
2693 GLboolean EXT_cull_vertex
;
2694 GLboolean EXT_convolution
;
2695 GLboolean EXT_compiled_vertex_array
;
2696 GLboolean EXT_copy_texture
;
2697 GLboolean EXT_depth_bounds_test
;
2698 GLboolean EXT_draw_buffers2
;
2699 GLboolean EXT_draw_range_elements
;
2700 GLboolean EXT_fog_coord
;
2701 GLboolean EXT_framebuffer_blit
;
2702 GLboolean EXT_framebuffer_multisample
;
2703 GLboolean EXT_framebuffer_object
;
2704 GLboolean EXT_framebuffer_sRGB
;
2705 GLboolean EXT_gpu_program_parameters
;
2706 GLboolean EXT_histogram
;
2707 GLboolean EXT_multi_draw_arrays
;
2708 GLboolean EXT_paletted_texture
;
2709 GLboolean EXT_packed_depth_stencil
;
2710 GLboolean EXT_packed_float
;
2711 GLboolean EXT_packed_pixels
;
2712 GLboolean EXT_pixel_buffer_object
;
2713 GLboolean EXT_point_parameters
;
2714 GLboolean EXT_polygon_offset
;
2715 GLboolean EXT_provoking_vertex
;
2716 GLboolean EXT_rescale_normal
;
2717 GLboolean EXT_shadow_funcs
;
2718 GLboolean EXT_secondary_color
;
2719 GLboolean EXT_separate_specular_color
;
2720 GLboolean EXT_shared_texture_palette
;
2721 GLboolean EXT_stencil_wrap
;
2722 GLboolean EXT_stencil_two_side
;
2723 GLboolean EXT_subtexture
;
2724 GLboolean EXT_texture
;
2725 GLboolean EXT_texture_object
;
2726 GLboolean EXT_texture3D
;
2727 GLboolean EXT_texture_array
;
2728 GLboolean EXT_texture_compression_s3tc
;
2729 GLboolean EXT_texture_compression_rgtc
;
2730 GLboolean EXT_texture_env_add
;
2731 GLboolean EXT_texture_env_combine
;
2732 GLboolean EXT_texture_env_dot3
;
2733 GLboolean EXT_texture_filter_anisotropic
;
2734 GLboolean EXT_texture_integer
;
2735 GLboolean EXT_texture_lod_bias
;
2736 GLboolean EXT_texture_mirror_clamp
;
2737 GLboolean EXT_texture_shared_exponent
;
2738 GLboolean EXT_texture_sRGB
;
2739 GLboolean EXT_texture_swizzle
;
2740 GLboolean EXT_transform_feedback
;
2741 GLboolean EXT_timer_query
;
2742 GLboolean EXT_vertex_array
;
2743 GLboolean EXT_vertex_array_bgra
;
2744 GLboolean EXT_vertex_array_set
;
2745 /* vendor extensions */
2746 GLboolean APPLE_client_storage
;
2747 GLboolean APPLE_packed_pixels
;
2748 GLboolean APPLE_vertex_array_object
;
2749 GLboolean APPLE_object_purgeable
;
2750 GLboolean ATI_envmap_bumpmap
;
2751 GLboolean ATI_texture_mirror_once
;
2752 GLboolean ATI_texture_env_combine3
;
2753 GLboolean ATI_fragment_shader
;
2754 GLboolean ATI_separate_stencil
;
2755 GLboolean IBM_rasterpos_clip
;
2756 GLboolean IBM_multimode_draw_arrays
;
2757 GLboolean MESA_pack_invert
;
2758 GLboolean MESA_packed_depth_stencil
;
2759 GLboolean MESA_resize_buffers
;
2760 GLboolean MESA_ycbcr_texture
;
2761 GLboolean MESA_texture_array
;
2762 GLboolean MESA_texture_signed_rgba
;
2763 GLboolean NV_blend_square
;
2764 GLboolean NV_conditional_render
;
2765 GLboolean NV_fragment_program
;
2766 GLboolean NV_fragment_program_option
;
2767 GLboolean NV_light_max_exponent
;
2768 GLboolean NV_point_sprite
;
2769 GLboolean NV_primitive_restart
;
2770 GLboolean NV_texgen_reflection
;
2771 GLboolean NV_texture_env_combine4
;
2772 GLboolean NV_texture_rectangle
;
2773 GLboolean NV_vertex_program
;
2774 GLboolean NV_vertex_program1_1
;
2775 GLboolean OES_read_format
;
2776 GLboolean SGI_color_matrix
;
2777 GLboolean SGI_color_table
;
2778 GLboolean SGI_texture_color_table
;
2779 GLboolean SGIS_generate_mipmap
;
2780 GLboolean SGIS_texture_edge_clamp
;
2781 GLboolean SGIS_texture_lod
;
2782 GLboolean TDFX_texture_compression_FXT1
;
2784 GLboolean OES_EGL_image
;
2785 GLboolean OES_draw_texture
;
2786 /** The extension string */
2787 const GLubyte
*String
;
2788 /** Number of supported extensions */
2794 * A stack of matrices (projection, modelview, color, texture, etc).
2796 struct gl_matrix_stack
2798 GLmatrix
*Top
; /**< points into Stack */
2799 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2800 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2801 GLuint MaxDepth
; /**< size of Stack[] array */
2802 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2807 * \name Bits for image transfer operations
2808 * \sa __GLcontextRec::ImageTransferState.
2811 #define IMAGE_SCALE_BIAS_BIT 0x1
2812 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2813 #define IMAGE_MAP_COLOR_BIT 0x4
2814 #define IMAGE_COLOR_TABLE_BIT 0x8
2815 #define IMAGE_CONVOLUTION_BIT 0x10
2816 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2817 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2818 #define IMAGE_COLOR_MATRIX_BIT 0x80
2819 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2820 #define IMAGE_HISTOGRAM_BIT 0x200
2821 #define IMAGE_MIN_MAX_BIT 0x400
2822 #define IMAGE_CLAMP_BIT 0x800
2825 /** Pixel Transfer ops up to convolution */
2826 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2827 IMAGE_SHIFT_OFFSET_BIT | \
2828 IMAGE_MAP_COLOR_BIT | \
2829 IMAGE_COLOR_TABLE_BIT)
2831 /** Pixel transfer ops after convolution */
2832 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2833 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2834 IMAGE_COLOR_MATRIX_BIT | \
2835 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2836 IMAGE_HISTOGRAM_BIT | \
2842 * \name Bits to indicate what state has changed.
2847 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2848 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2849 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2850 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2851 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2852 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2853 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2854 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2855 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2856 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2857 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2858 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2859 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2860 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2861 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2862 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2863 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2864 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2865 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2866 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2867 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2868 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2869 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2870 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2871 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2872 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2873 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2874 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2875 #define _NEW_CURRENT_ATTRIB 0x10000000 /**< __GLcontextRec::Current */
2876 #define _NEW_PROGRAM_CONSTANTS 0x20000000
2877 #define _NEW_BUFFER_OBJECT 0x40000000
2883 * \name Bits to track array state changes
2885 * Also used to summarize array enabled.
2888 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2889 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2890 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2891 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2892 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2893 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2894 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2895 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2896 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2897 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2898 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2899 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2900 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2901 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2902 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2903 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2904 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2905 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2906 #define _NEW_ARRAY_ALL 0xffffffff
2909 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2910 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2916 * \name A bunch of flags that we think might be useful to drivers.
2918 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2921 #define DD_FLATSHADE 0x1
2922 #define DD_SEPARATE_SPECULAR 0x2
2923 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2924 #define DD_TRI_LIGHT_TWOSIDE 0x8
2925 #define DD_TRI_UNFILLED 0x10
2926 #define DD_TRI_SMOOTH 0x20
2927 #define DD_TRI_STIPPLE 0x40
2928 #define DD_TRI_OFFSET 0x80
2929 #define DD_LINE_SMOOTH 0x100
2930 #define DD_LINE_STIPPLE 0x200
2931 #define DD_LINE_WIDTH 0x400
2932 #define DD_POINT_SMOOTH 0x800
2933 #define DD_POINT_SIZE 0x1000
2934 #define DD_POINT_ATTEN 0x2000
2935 #define DD_TRI_TWOSTENCIL 0x4000
2940 * \name Define the state changes under which each of these bits might change
2943 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2944 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2945 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2946 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2947 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2948 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2949 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2950 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2951 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2952 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2953 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2954 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2955 #define _DD_NEW_POINT_SIZE _NEW_POINT
2956 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2961 * Composite state flags
2964 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2970 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2973 #define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL | \
2980 /* This has to be included here. */
2984 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2987 * Core Mesa's support for tnl modules:
2989 struct gl_tnl_module
2992 * Vertex format to be lazily swapped into current dispatch.
2994 const GLvertexformat
*Current
;
2997 * \name Record of functions swapped out.
2998 * On restore, only need to swap these functions back in.
3002 _glapi_proc
* location
;
3003 _glapi_proc function
;
3004 } Swapped
[NUM_VERTEX_FORMAT_ENTRIES
];
3011 * Display list flags.
3012 * Strictly this is a tnl-private concept, but it doesn't seem
3013 * worthwhile adding a tnl private structure just to hold this one bit
3016 #define DLIST_DANGLING_REFS 0x1
3019 /** Opaque declaration of display list payload data type */
3020 union gl_dlist_node
;
3024 * Provide a location where information about a display list can be
3025 * collected. Could be extended with driverPrivate structures,
3026 * etc. in the future.
3028 struct gl_display_list
3031 GLbitfield Flags
; /**< DLIST_x flags */
3032 /** The dlist commands are in a linked list of nodes */
3033 union gl_dlist_node
*Head
;
3038 * State used during display list compilation and execution.
3040 struct gl_dlist_state
3042 GLuint CallDepth
; /**< Current recursion calling depth */
3044 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3045 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3046 GLuint CurrentPos
; /**< Index into current block of nodes */
3048 GLvertexformat ListVtxfmt
;
3050 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3051 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3053 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3054 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3056 GLubyte ActiveIndex
;
3057 GLfloat CurrentIndex
;
3059 GLubyte ActiveEdgeFlag
;
3060 GLboolean CurrentEdgeFlag
;
3063 /* State known to have been set by the currently-compiling display
3064 * list. Used to eliminate some redundant state changes.
3071 * Enum for the OpenGL APIs we know about and may support.
3080 * Mesa rendering context.
3082 * This is the central context data structure for Mesa. Almost all
3083 * OpenGL state is contained in this structure.
3084 * Think of this as a base class from which device drivers will derive
3087 * The GLcontext typedef names this structure.
3089 struct __GLcontextRec
3091 /** State possibly shared with other contexts in the address space */
3092 struct gl_shared_state
*Shared
;
3094 /** \name API function pointer tables */
3097 struct _glapi_table
*Save
; /**< Display list save functions */
3098 struct _glapi_table
*Exec
; /**< Execute functions */
3099 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3103 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
3104 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
3105 GLframebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3106 GLframebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3109 * Device driver function pointer table
3111 struct dd_function_table Driver
;
3113 void *DriverCtx
; /**< Points to device driver context/state */
3115 /** Core/Driver constants */
3116 struct gl_constants Const
;
3118 /** \name The various 4x4 matrix stacks */
3120 struct gl_matrix_stack ModelviewMatrixStack
;
3121 struct gl_matrix_stack ProjectionMatrixStack
;
3122 struct gl_matrix_stack ColorMatrixStack
;
3123 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3124 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3125 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3128 /** Combined modelview and projection matrix */
3129 GLmatrix _ModelProjectMatrix
;
3131 /** \name Display lists */
3132 struct gl_dlist_state ListState
;
3134 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3135 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3137 /** Extension information */
3138 struct gl_extensions Extensions
;
3141 GLuint VersionMajor
, VersionMinor
;
3142 char *VersionString
;
3144 /** \name State attribute stack (for glPush/PopAttrib) */
3146 GLuint AttribStackDepth
;
3147 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3150 /** \name Renderer attribute groups
3152 * We define a struct for each attribute group to make pushing and popping
3153 * attributes easy. Also it's a good organization.
3156 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3157 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3158 struct gl_current_attrib Current
; /**< Current attributes */
3159 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3160 struct gl_eval_attrib Eval
; /**< Eval attributes */
3161 struct gl_fog_attrib Fog
; /**< Fog attributes */
3162 struct gl_hint_attrib Hint
; /**< Hint attributes */
3163 struct gl_light_attrib Light
; /**< Light attributes */
3164 struct gl_line_attrib Line
; /**< Line attributes */
3165 struct gl_list_attrib List
; /**< List attributes */
3166 struct gl_multisample_attrib Multisample
;
3167 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3168 struct gl_point_attrib Point
; /**< Point attributes */
3169 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3170 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3171 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3172 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3173 struct gl_texture_attrib Texture
; /**< Texture attributes */
3174 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3175 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3178 /** \name Client attribute stack */
3180 GLuint ClientAttribStackDepth
;
3181 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3184 /** \name Client attribute groups */
3186 struct gl_array_attrib Array
; /**< Vertex arrays */
3187 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3188 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3189 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3192 /** \name Other assorted state (not pushed/popped on attribute stack) */
3194 struct gl_pixelmaps PixelMaps
;
3195 struct gl_histogram_attrib Histogram
;
3196 struct gl_minmax_attrib MinMax
;
3197 struct gl_convolution_attrib Convolution1D
;
3198 struct gl_convolution_attrib Convolution2D
;
3199 struct gl_convolution_attrib Separable2D
;
3201 struct gl_evaluators EvalMap
; /**< All evaluators */
3202 struct gl_feedback Feedback
; /**< Feedback */
3203 struct gl_selection Select
; /**< Selection */
3205 struct gl_color_table ColorTable
[COLORTABLE_MAX
];
3206 struct gl_color_table ProxyColorTable
[COLORTABLE_MAX
];
3208 struct gl_program_state Program
; /**< general program state */
3209 struct gl_vertex_program_state VertexProgram
;
3210 struct gl_fragment_program_state FragmentProgram
;
3211 struct gl_geometry_program_state GeometryProgram
;
3212 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3214 struct gl_shader_state Shader
; /**< GLSL shader object state */
3216 struct gl_query_state Query
; /**< occlusion, timer queries */
3218 struct gl_transform_feedback TransformFeedback
;
3220 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3221 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3224 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3226 /* GL_EXT_framebuffer_object */
3227 struct gl_renderbuffer
*CurrentRenderbuffer
;
3229 GLenum ErrorValue
; /**< Last error code */
3232 * Recognize and silence repeated error debug messages in buggy apps.
3234 const char *ErrorDebugFmtString
;
3235 GLuint ErrorDebugCount
;
3237 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3238 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3240 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3242 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3244 /** \name Derived state */
3246 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3247 * state validation so they need to always be current.
3249 GLbitfield _TriangleCaps
;
3250 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3251 GLfloat _EyeZDir
[3];
3252 GLfloat _ModelViewInvScale
;
3253 GLboolean _NeedEyeCoords
;
3254 GLboolean _ForceEyeCoords
;
3256 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3258 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3259 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3262 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3264 /** \name For debugging/development only */
3266 GLboolean FirstTimeCurrent
;
3269 /** Dither disable via MESA_NO_DITHER env var */
3272 /** software compression/decompression supported or not */
3273 GLboolean Mesa_DXTn
;
3276 * Use dp4 (rather than mul/mad) instructions for position
3279 GLboolean mvp_with_dp4
;
3281 /** Core tnl module support */
3282 struct gl_tnl_module TnlModule
;
3285 * \name Hooks for module contexts.
3287 * These will eventually live in the driver or elsewhere.
3290 void *swrast_context
;
3291 void *swsetup_context
;
3292 void *swtnl_context
;
3294 struct st_context
*st
;
3300 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
3301 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
3305 extern int MESA_VERBOSE
;
3306 extern int MESA_DEBUG_FLAGS
;
3307 # define MESA_FUNCTION __FUNCTION__
3309 # define MESA_VERBOSE 0
3310 # define MESA_DEBUG_FLAGS 0
3311 # define MESA_FUNCTION "a function"
3318 /** The MESA_VERBOSE var is a bitmask of these flags */
3321 VERBOSE_VARRAY
= 0x0001,
3322 VERBOSE_TEXTURE
= 0x0002,
3323 VERBOSE_MATERIAL
= 0x0004,
3324 VERBOSE_PIPELINE
= 0x0008,
3325 VERBOSE_DRIVER
= 0x0010,
3326 VERBOSE_STATE
= 0x0020,
3327 VERBOSE_API
= 0x0040,
3328 VERBOSE_DISPLAY_LIST
= 0x0100,
3329 VERBOSE_LIGHTING
= 0x0200,
3330 VERBOSE_PRIMS
= 0x0400,
3331 VERBOSE_VERTS
= 0x0800,
3332 VERBOSE_DISASSEM
= 0x1000,
3333 VERBOSE_DRAW
= 0x2000,
3334 VERBOSE_SWAPBUFFERS
= 0x4000
3338 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3341 DEBUG_ALWAYS_FLUSH
= 0x1
3346 #endif /* MTYPES_H */