2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include "main/glheader.h"
38 #include "main/config.h"
39 #include "main/mfeatures.h"
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
42 #include "main/simple_list.h" /* struct simple_node */
43 #include "main/formats.h" /* MESA_FORMAT_COUNT */
47 * Color channel data type.
50 typedef GLubyte GLchan
;
52 #define CHAN_MAXF 255.0F
53 #define CHAN_TYPE GL_UNSIGNED_BYTE
55 typedef GLushort GLchan
;
56 #define CHAN_MAX 65535
57 #define CHAN_MAXF 65535.0F
58 #define CHAN_TYPE GL_UNSIGNED_SHORT
60 typedef GLfloat GLchan
;
62 #define CHAN_MAXF 1.0F
63 #define CHAN_TYPE GL_FLOAT
65 #error "illegal number of color channel bits"
70 * Stencil buffer data type.
73 typedef GLubyte GLstencil
;
74 #elif STENCIL_BITS==16
75 typedef GLushort GLstencil
;
77 # error "illegal number of stencil bits"
82 * \name 64-bit extension of GLbitfield.
85 typedef GLuint64 GLbitfield64
;
87 #define BITFIELD64_ONE 1ULL
88 #define BITFIELD64_ALLONES ~0ULL
90 /** Set a single bit */
91 #define BITFIELD64_BIT(b) (BITFIELD64_ONE << (b))
93 /** Set a mask of the least significant \c b bits */
94 #define BITFIELD64_MASK(b) (((b) >= 64) ? BITFIELD64_ALLONES : \
95 (BITFIELD64_BIT(b) - 1))
98 * Set all bits from l (low bit) to h (high bit), inclusive.
100 * \note \C BITFIELD_64_RANGE(0, 63) return 64 set bits.
102 #define BITFIELD64_RANGE(l, h) (BITFIELD64_MASK((h) + 1) & ~BITFIELD64_MASK(l))
107 * \name Some forward type declarations
110 struct _mesa_HashTable
;
111 struct gl_attrib_node
;
112 struct gl_list_extensions
;
113 struct gl_meta_state
;
114 struct gl_pixelstore_attrib
;
115 struct gl_program_cache
;
116 struct gl_texture_format
;
117 struct gl_texture_image
;
118 struct gl_texture_object
;
124 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
125 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
126 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
127 #define PRIM_UNKNOWN (GL_POLYGON+3)
131 * Shader stages. Note that these will become 5 with tessellation.
132 * These MUST have the same values as gallium's PIPE_SHADER_*
136 MESA_SHADER_VERTEX
= 0,
137 MESA_SHADER_FRAGMENT
= 1,
138 MESA_SHADER_GEOMETRY
= 2,
139 MESA_SHADER_TYPES
= 3
145 * Indexes for vertex program attributes.
146 * GL_NV_vertex_program aliases generic attributes over the conventional
147 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
148 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
149 * generic attributes are distinct/separate).
154 VERT_ATTRIB_WEIGHT
= 1,
155 VERT_ATTRIB_NORMAL
= 2,
156 VERT_ATTRIB_COLOR0
= 3,
157 VERT_ATTRIB_COLOR1
= 4,
159 VERT_ATTRIB_COLOR_INDEX
= 6,
160 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
161 VERT_ATTRIB_EDGEFLAG
= 7,
162 VERT_ATTRIB_TEX0
= 8,
163 VERT_ATTRIB_TEX1
= 9,
164 VERT_ATTRIB_TEX2
= 10,
165 VERT_ATTRIB_TEX3
= 11,
166 VERT_ATTRIB_TEX4
= 12,
167 VERT_ATTRIB_TEX5
= 13,
168 VERT_ATTRIB_TEX6
= 14,
169 VERT_ATTRIB_TEX7
= 15,
170 VERT_ATTRIB_GENERIC0
= 16,
171 VERT_ATTRIB_GENERIC1
= 17,
172 VERT_ATTRIB_GENERIC2
= 18,
173 VERT_ATTRIB_GENERIC3
= 19,
174 VERT_ATTRIB_GENERIC4
= 20,
175 VERT_ATTRIB_GENERIC5
= 21,
176 VERT_ATTRIB_GENERIC6
= 22,
177 VERT_ATTRIB_GENERIC7
= 23,
178 VERT_ATTRIB_GENERIC8
= 24,
179 VERT_ATTRIB_GENERIC9
= 25,
180 VERT_ATTRIB_GENERIC10
= 26,
181 VERT_ATTRIB_GENERIC11
= 27,
182 VERT_ATTRIB_GENERIC12
= 28,
183 VERT_ATTRIB_GENERIC13
= 29,
184 VERT_ATTRIB_GENERIC14
= 30,
185 VERT_ATTRIB_GENERIC15
= 31,
190 * Bitflags for vertex attributes.
191 * These are used in bitfields in many places.
194 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
195 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
196 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
197 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
198 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
199 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
200 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
201 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
202 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
203 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
204 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
205 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
206 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
207 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
208 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
209 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
210 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
211 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
212 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
213 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
214 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
215 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
216 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
217 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
218 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
219 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
220 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
221 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
222 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
223 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
224 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
225 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
227 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
228 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
233 * Indexes for vertex program result attributes
237 VERT_RESULT_HPOS
= 0,
238 VERT_RESULT_COL0
= 1,
239 VERT_RESULT_COL1
= 2,
240 VERT_RESULT_FOGC
= 3,
241 VERT_RESULT_TEX0
= 4,
242 VERT_RESULT_TEX1
= 5,
243 VERT_RESULT_TEX2
= 6,
244 VERT_RESULT_TEX3
= 7,
245 VERT_RESULT_TEX4
= 8,
246 VERT_RESULT_TEX5
= 9,
247 VERT_RESULT_TEX6
= 10,
248 VERT_RESULT_TEX7
= 11,
249 VERT_RESULT_PSIZ
= 12,
250 VERT_RESULT_BFC0
= 13,
251 VERT_RESULT_BFC1
= 14,
252 VERT_RESULT_EDGE
= 15,
253 VERT_RESULT_VAR0
= 16, /**< shader varying */
254 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
258 /*********************************************/
261 * Indexes for geometry program attributes.
265 GEOM_ATTRIB_POSITION
= 0,
266 GEOM_ATTRIB_COLOR0
= 1,
267 GEOM_ATTRIB_COLOR1
= 2,
268 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
269 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
270 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
271 GEOM_ATTRIB_POINT_SIZE
= 6,
272 GEOM_ATTRIB_CLIP_VERTEX
= 7,
273 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
274 GEOM_ATTRIB_TEX_COORD
= 9,
276 GEOM_ATTRIB_VAR0
= 16,
277 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
281 * Bitflags for geometry attributes.
282 * These are used in bitfields in many places.
285 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
286 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
287 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
288 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
289 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
290 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
291 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
292 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
293 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
294 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
295 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
297 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
302 * Indexes for geometry program result attributes
307 GEOM_RESULT_COL0
= 1,
308 GEOM_RESULT_COL1
= 2,
309 GEOM_RESULT_SCOL0
= 3,
310 GEOM_RESULT_SCOL1
= 4,
311 GEOM_RESULT_FOGC
= 5,
312 GEOM_RESULT_TEX0
= 6,
313 GEOM_RESULT_TEX1
= 7,
314 GEOM_RESULT_TEX2
= 8,
315 GEOM_RESULT_TEX3
= 9,
316 GEOM_RESULT_TEX4
= 10,
317 GEOM_RESULT_TEX5
= 11,
318 GEOM_RESULT_TEX6
= 12,
319 GEOM_RESULT_TEX7
= 13,
320 GEOM_RESULT_PSIZ
= 14,
321 GEOM_RESULT_CLPV
= 15,
322 GEOM_RESULT_PRID
= 16,
323 GEOM_RESULT_LAYR
= 17,
324 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
325 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
326 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
331 * Indexes for fragment program input attributes.
335 FRAG_ATTRIB_WPOS
= 0,
336 FRAG_ATTRIB_COL0
= 1,
337 FRAG_ATTRIB_COL1
= 2,
338 FRAG_ATTRIB_FOGC
= 3,
339 FRAG_ATTRIB_TEX0
= 4,
340 FRAG_ATTRIB_TEX1
= 5,
341 FRAG_ATTRIB_TEX2
= 6,
342 FRAG_ATTRIB_TEX3
= 7,
343 FRAG_ATTRIB_TEX4
= 8,
344 FRAG_ATTRIB_TEX5
= 9,
345 FRAG_ATTRIB_TEX6
= 10,
346 FRAG_ATTRIB_TEX7
= 11,
347 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
348 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
349 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
350 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
354 * Bitflags for fragment program input attributes.
357 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
358 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
359 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
360 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
361 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
362 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
363 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
364 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
365 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
366 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
367 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
368 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
369 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
370 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
371 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
373 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
374 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
376 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
388 * Fragment program results
392 FRAG_RESULT_DEPTH
= 0,
393 FRAG_RESULT_STENCIL
= 1,
394 FRAG_RESULT_COLOR
= 2,
395 FRAG_RESULT_DATA0
= 3,
396 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
401 * Indexes for all renderbuffers
405 /* the four standard color buffers */
413 /* optional aux buffer */
415 /* generic renderbuffers */
428 * Bit flags for all renderbuffers
430 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
431 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
432 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
433 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
434 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
435 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
436 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
437 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
438 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
439 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
440 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
441 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
442 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
443 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
444 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
445 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
446 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
447 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
448 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
451 * Mask of all the color buffer bits (but not accum).
453 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
454 BUFFER_BIT_BACK_LEFT | \
455 BUFFER_BIT_FRONT_RIGHT | \
456 BUFFER_BIT_BACK_RIGHT | \
458 BUFFER_BIT_COLOR0 | \
459 BUFFER_BIT_COLOR1 | \
460 BUFFER_BIT_COLOR2 | \
461 BUFFER_BIT_COLOR3 | \
462 BUFFER_BIT_COLOR4 | \
463 BUFFER_BIT_COLOR5 | \
464 BUFFER_BIT_COLOR6 | \
469 * Framebuffer configuration (aka visual / pixelformat)
470 * Note: some of these fields should be boolean, but it appears that
471 * code in drivers/dri/common/util.c requires int-sized fields.
477 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
478 GLuint doubleBufferMode
;
481 GLboolean haveAccumBuffer
;
482 GLboolean haveDepthBuffer
;
483 GLboolean haveStencilBuffer
;
485 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
486 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
487 GLint rgbBits
; /* total bits for rgb */
488 GLint indexBits
; /* total bits for colorindex */
490 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
498 /* EXT_visual_rating / GLX 1.2 */
501 /* EXT_visual_info / GLX 1.2 */
502 GLint transparentPixel
;
503 /* colors are floats scaled to ints */
504 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
505 GLint transparentIndex
;
507 /* ARB_multisample / SGIS_multisample */
511 /* SGIX_pbuffer / GLX 1.3 */
512 GLint maxPbufferWidth
;
513 GLint maxPbufferHeight
;
514 GLint maxPbufferPixels
;
515 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
516 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
518 /* OML_swap_method */
521 /* EXT_texture_from_pixmap */
522 GLint bindToTextureRgb
;
523 GLint bindToTextureRgba
;
524 GLint bindToMipmapTexture
;
525 GLint bindToTextureTargets
;
528 /* EXT_framebuffer_sRGB */
534 * Data structure for color tables
536 struct gl_color_table
538 GLenum InternalFormat
; /**< The user-specified format */
539 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
540 GLuint Size
; /**< number of entries in table */
541 GLfloat
*TableF
; /**< Color table, floating point values */
542 GLubyte
*TableUB
; /**< Color table, ubyte values */
547 GLubyte LuminanceSize
;
548 GLubyte IntensitySize
;
553 * \name Bit flags used for updating material values.
556 #define MAT_ATTRIB_FRONT_AMBIENT 0
557 #define MAT_ATTRIB_BACK_AMBIENT 1
558 #define MAT_ATTRIB_FRONT_DIFFUSE 2
559 #define MAT_ATTRIB_BACK_DIFFUSE 3
560 #define MAT_ATTRIB_FRONT_SPECULAR 4
561 #define MAT_ATTRIB_BACK_SPECULAR 5
562 #define MAT_ATTRIB_FRONT_EMISSION 6
563 #define MAT_ATTRIB_BACK_EMISSION 7
564 #define MAT_ATTRIB_FRONT_SHININESS 8
565 #define MAT_ATTRIB_BACK_SHININESS 9
566 #define MAT_ATTRIB_FRONT_INDEXES 10
567 #define MAT_ATTRIB_BACK_INDEXES 11
568 #define MAT_ATTRIB_MAX 12
570 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
571 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
572 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
573 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
574 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
575 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
577 #define MAT_INDEX_AMBIENT 0
578 #define MAT_INDEX_DIFFUSE 1
579 #define MAT_INDEX_SPECULAR 2
581 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
582 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
583 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
584 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
585 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
586 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
587 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
588 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
589 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
590 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
591 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
592 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
595 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
596 MAT_BIT_FRONT_AMBIENT | \
597 MAT_BIT_FRONT_DIFFUSE | \
598 MAT_BIT_FRONT_SPECULAR | \
599 MAT_BIT_FRONT_SHININESS | \
600 MAT_BIT_FRONT_INDEXES)
602 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
603 MAT_BIT_BACK_AMBIENT | \
604 MAT_BIT_BACK_DIFFUSE | \
605 MAT_BIT_BACK_SPECULAR | \
606 MAT_BIT_BACK_SHININESS | \
607 MAT_BIT_BACK_INDEXES)
609 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
613 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
614 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
617 * Material shininess lookup table.
621 struct gl_shine_tab
*next
, *prev
;
622 GLfloat tab
[SHINE_TABLE_SIZE
+1];
629 * Light source state.
633 struct gl_light
*next
; /**< double linked list with sentinel */
634 struct gl_light
*prev
;
636 GLfloat Ambient
[4]; /**< ambient color */
637 GLfloat Diffuse
[4]; /**< diffuse color */
638 GLfloat Specular
[4]; /**< specular color */
639 GLfloat EyePosition
[4]; /**< position in eye coordinates */
640 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
641 GLfloat SpotExponent
;
642 GLfloat SpotCutoff
; /**< in degrees */
643 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
644 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
645 GLfloat ConstantAttenuation
;
646 GLfloat LinearAttenuation
;
647 GLfloat QuadraticAttenuation
;
648 GLboolean Enabled
; /**< On/off flag */
651 * \name Derived fields
654 GLbitfield _Flags
; /**< State */
656 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
657 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
658 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
659 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
660 GLfloat _VP_inf_spot_attenuation
;
662 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
663 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
664 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
665 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
666 GLfloat _dli
; /**< CI diffuse light intensity */
667 GLfloat _sli
; /**< CI specular light intensity */
677 GLfloat Ambient
[4]; /**< ambient color */
678 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
679 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
680 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
681 * or GL_SEPARATE_SPECULAR_COLOR */
690 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
695 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
697 struct gl_accum_attrib
699 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
704 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
706 struct gl_colorbuffer_attrib
708 GLuint ClearIndex
; /**< Index to use for glClear */
709 GLclampf ClearColor
[4]; /**< Color to use for glClear */
711 GLuint IndexMask
; /**< Color index write mask */
712 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4];/**< Each flag is 0xff or 0x0 */
714 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
717 * \name alpha testing
720 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
721 GLenum AlphaFunc
; /**< Alpha test function */
722 GLclampf AlphaRef
; /**< Alpha reference value */
729 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
730 GLfloat BlendColor
[4]; /**< Blending color */
733 GLenum SrcRGB
; /**< RGB blend source term */
734 GLenum DstRGB
; /**< RGB blend dest term */
735 GLenum SrcA
; /**< Alpha blend source term */
736 GLenum DstA
; /**< Alpha blend dest term */
737 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
738 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
739 } Blend
[MAX_DRAW_BUFFERS
];
740 /** Are the blend func terms currently different for each buffer/target? */
741 GLboolean _BlendFuncPerBuffer
;
742 /** Are the blend equations currently different for each buffer/target? */
743 GLboolean _BlendEquationPerBuffer
;
750 GLenum LogicOp
; /**< Logic operator */
751 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
752 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
753 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
756 GLboolean DitherFlag
; /**< Dither enable flag */
758 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
759 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
761 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
766 * Current attribute group (GL_CURRENT_BIT).
768 struct gl_current_attrib
771 * \name Current vertex attributes.
772 * \note Values are valid only after FLUSH_VERTICES has been called.
773 * \note Index and Edgeflag current values are stored as floats in the
774 * SIX and SEVEN attribute slots.
776 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
779 * \name Current raster position attributes (always valid).
780 * \note This set of attributes is very similar to the SWvertex struct.
783 GLfloat RasterPos
[4];
784 GLfloat RasterDistance
;
785 GLfloat RasterColor
[4];
786 GLfloat RasterSecondaryColor
[4];
787 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
788 GLboolean RasterPosValid
;
794 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
796 struct gl_depthbuffer_attrib
798 GLenum Func
; /**< Function for depth buffer compare */
799 GLclampd Clear
; /**< Value to clear depth buffer to */
800 GLboolean Test
; /**< Depth buffering enabled flag */
801 GLboolean Mask
; /**< Depth buffer writable? */
802 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
803 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
808 * Evaluator attribute group (GL_EVAL_BIT).
810 struct gl_eval_attrib
816 GLboolean Map1Color4
;
818 GLboolean Map1Normal
;
819 GLboolean Map1TextureCoord1
;
820 GLboolean Map1TextureCoord2
;
821 GLboolean Map1TextureCoord3
;
822 GLboolean Map1TextureCoord4
;
823 GLboolean Map1Vertex3
;
824 GLboolean Map1Vertex4
;
825 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
826 GLboolean Map2Color4
;
828 GLboolean Map2Normal
;
829 GLboolean Map2TextureCoord1
;
830 GLboolean Map2TextureCoord2
;
831 GLboolean Map2TextureCoord3
;
832 GLboolean Map2TextureCoord4
;
833 GLboolean Map2Vertex3
;
834 GLboolean Map2Vertex4
;
835 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
836 GLboolean AutoNormal
;
840 * \name Map Grid endpoints and divisions and calculated du values
844 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
845 GLint MapGrid2un
, MapGrid2vn
;
846 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
847 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
853 * Fog attribute group (GL_FOG_BIT).
857 GLboolean Enabled
; /**< Fog enabled flag */
858 GLfloat Color
[4]; /**< Fog color */
859 GLfloat Density
; /**< Density >= 0.0 */
860 GLfloat Start
; /**< Start distance in eye coords */
861 GLfloat End
; /**< End distance in eye coords */
862 GLfloat Index
; /**< Fog index */
863 GLenum Mode
; /**< Fog mode */
864 GLboolean ColorSumEnabled
;
865 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
866 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
871 * \brief Layout qualifiers for gl_FragDepth.
873 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
874 * a layout qualifier.
876 * \see enum ir_depth_layout
878 enum gl_frag_depth_layout
{
879 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
880 FRAG_DEPTH_LAYOUT_ANY
,
881 FRAG_DEPTH_LAYOUT_GREATER
,
882 FRAG_DEPTH_LAYOUT_LESS
,
883 FRAG_DEPTH_LAYOUT_UNCHANGED
888 * Hint attribute group (GL_HINT_BIT).
890 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
892 struct gl_hint_attrib
894 GLenum PerspectiveCorrection
;
897 GLenum PolygonSmooth
;
899 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
900 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
901 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
902 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
909 #define LIGHT_SPOT 0x1
910 #define LIGHT_LOCAL_VIEWER 0x2
911 #define LIGHT_POSITIONAL 0x4
912 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
917 * Lighting attribute group (GL_LIGHT_BIT).
919 struct gl_light_attrib
921 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
922 struct gl_lightmodel Model
; /**< Lighting model */
925 * Must flush FLUSH_VERTICES before referencing:
928 struct gl_material Material
; /**< Includes front & back values */
931 GLboolean Enabled
; /**< Lighting enabled flag */
932 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
933 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
934 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
935 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
936 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
937 GLboolean ColorMaterialEnabled
;
938 GLenum ClampVertexColor
;
940 struct gl_light EnabledList
; /**< List sentinel */
943 * Derived state for optimizations:
946 GLboolean _NeedEyeCoords
;
947 GLboolean _NeedVertices
; /**< Use fast shader? */
948 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
949 GLfloat _BaseColor
[2][3];
955 * Line attribute group (GL_LINE_BIT).
957 struct gl_line_attrib
959 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
960 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
961 GLushort StipplePattern
; /**< Stipple pattern */
962 GLint StippleFactor
; /**< Stipple repeat factor */
963 GLfloat Width
; /**< Line width */
968 * Display list attribute group (GL_LIST_BIT).
970 struct gl_list_attrib
977 * Multisample attribute group (GL_MULTISAMPLE_BIT).
979 struct gl_multisample_attrib
982 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
983 GLboolean SampleAlphaToCoverage
;
984 GLboolean SampleAlphaToOne
;
985 GLboolean SampleCoverage
;
986 GLfloat SampleCoverageValue
;
987 GLboolean SampleCoverageInvert
;
992 * A pixelmap (see glPixelMap)
997 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
998 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1003 * Collection of all pixelmaps
1007 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1008 struct gl_pixelmap GtoG
;
1009 struct gl_pixelmap BtoB
;
1010 struct gl_pixelmap AtoA
;
1011 struct gl_pixelmap ItoR
;
1012 struct gl_pixelmap ItoG
;
1013 struct gl_pixelmap ItoB
;
1014 struct gl_pixelmap ItoA
;
1015 struct gl_pixelmap ItoI
;
1016 struct gl_pixelmap StoS
;
1021 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1023 struct gl_pixel_attrib
1025 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1027 /*--- Begin Pixel Transfer State ---*/
1028 /* Fields are in the order in which they're applied... */
1030 /** Scale & Bias (index shift, offset) */
1032 GLfloat RedBias
, RedScale
;
1033 GLfloat GreenBias
, GreenScale
;
1034 GLfloat BlueBias
, BlueScale
;
1035 GLfloat AlphaBias
, AlphaScale
;
1036 GLfloat DepthBias
, DepthScale
;
1037 GLint IndexShift
, IndexOffset
;
1041 /* Note: actual pixel maps are not part of this attrib group */
1042 GLboolean MapColorFlag
;
1043 GLboolean MapStencilFlag
;
1045 /*--- End Pixel Transfer State ---*/
1048 GLfloat ZoomX
, ZoomY
;
1050 /** GL_SGI_texture_color_table */
1051 GLfloat TextureColorTableScale
[4]; /**< RGBA */
1052 GLfloat TextureColorTableBias
[4]; /**< RGBA */
1057 * Point attribute group (GL_POINT_BIT).
1059 struct gl_point_attrib
1061 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1062 GLfloat Size
; /**< User-specified point size */
1063 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1064 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1065 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1066 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1067 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1068 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1069 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1070 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1075 * Polygon attribute group (GL_POLYGON_BIT).
1077 struct gl_polygon_attrib
1079 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1080 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1081 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1082 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1083 GLboolean CullFlag
; /**< Culling on/off flag */
1084 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1085 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1086 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1087 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1088 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1089 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1090 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1091 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1096 * Scissor attributes (GL_SCISSOR_BIT).
1098 struct gl_scissor_attrib
1100 GLboolean Enabled
; /**< Scissor test enabled? */
1101 GLint X
, Y
; /**< Lower left corner of box */
1102 GLsizei Width
, Height
; /**< Size of box */
1107 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1109 * Three sets of stencil data are tracked so that OpenGL 2.0,
1110 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1111 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1112 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1113 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1114 * GL_EXT_stencil_two_side GL_BACK state.
1116 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1117 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1119 * The derived value \c _TestTwoSide is set when the front-face and back-face
1120 * stencil state are different.
1122 struct gl_stencil_attrib
1124 GLboolean Enabled
; /**< Enabled flag */
1125 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1126 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1127 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1128 GLboolean _TestTwoSide
;
1129 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1130 GLenum Function
[3]; /**< Stencil function */
1131 GLenum FailFunc
[3]; /**< Fail function */
1132 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1133 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1134 GLint Ref
[3]; /**< Reference value */
1135 GLuint ValueMask
[3]; /**< Value mask */
1136 GLuint WriteMask
[3]; /**< Write mask */
1137 GLuint Clear
; /**< Clear value */
1142 * An index for each type of texture object. These correspond to the GL
1143 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1144 * Note: the order is from highest priority to lowest priority.
1148 TEXTURE_2D_ARRAY_INDEX
,
1149 TEXTURE_1D_ARRAY_INDEX
,
1160 * Bit flags for each type of texture object
1161 * Used for Texture.Unit[]._ReallyEnabled flags.
1164 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1165 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1166 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1167 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1168 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1169 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1170 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1175 * TexGenEnabled flags.
1182 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1187 * Bit flag versions of the corresponding GL_ constants.
1190 #define TEXGEN_SPHERE_MAP 0x1
1191 #define TEXGEN_OBJ_LINEAR 0x2
1192 #define TEXGEN_EYE_LINEAR 0x4
1193 #define TEXGEN_REFLECTION_MAP_NV 0x8
1194 #define TEXGEN_NORMAL_MAP_NV 0x10
1196 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1197 TEXGEN_REFLECTION_MAP_NV | \
1198 TEXGEN_NORMAL_MAP_NV)
1199 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1200 TEXGEN_REFLECTION_MAP_NV | \
1201 TEXGEN_NORMAL_MAP_NV | \
1207 /** Tex-gen enabled for texture unit? */
1208 #define ENABLE_TEXGEN(unit) (1 << (unit))
1210 /** Non-identity texture matrix for texture unit? */
1211 #define ENABLE_TEXMAT(unit) (1 << (unit))
1215 * Texel fetch function prototype. We use texel fetch functions to
1216 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1217 * texture images. These functions help to isolate us from the gritty
1218 * details of all the various texture image encodings.
1220 * \param texImage texture image.
1221 * \param col texel column.
1222 * \param row texel row.
1223 * \param img texel image level/layer.
1224 * \param texelOut output texel (up to 4 GLchans)
1226 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1227 GLint col
, GLint row
, GLint img
,
1231 * As above, but returns floats.
1232 * Used for depth component images and for upcoming signed/float
1235 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1236 GLint col
, GLint row
, GLint img
,
1237 GLfloat
*texelOut
);
1240 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1241 GLint col
, GLint row
, GLint img
,
1246 * Texture image state. Describes the dimensions of a texture image,
1247 * the texel format and pointers to Texel Fetch functions.
1249 struct gl_texture_image
1251 GLint InternalFormat
; /**< Internal format as given by the user */
1252 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1253 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1254 * GL_INTENSITY, GL_COLOR_INDEX,
1255 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1256 * only. Used for choosing TexEnv arithmetic.
1258 GLuint TexFormat
; /**< The actual format: MESA_FORMAT_x */
1260 GLuint Border
; /**< 0 or 1 */
1261 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1262 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1263 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1264 GLuint Width2
; /**< = Width - 2*Border */
1265 GLuint Height2
; /**< = Height - 2*Border */
1266 GLuint Depth2
; /**< = Depth - 2*Border */
1267 GLuint WidthLog2
; /**< = log2(Width2) */
1268 GLuint HeightLog2
; /**< = log2(Height2) */
1269 GLuint DepthLog2
; /**< = log2(Depth2) */
1270 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1271 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1272 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1273 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1274 GLboolean IsClientData
; /**< Data owned by client? */
1275 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1277 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1279 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1280 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1282 GLuint RowStride
; /**< Padded width in units of texels */
1283 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1284 each 2D slice in 'Data', in texels */
1285 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1288 * \name For device driver:
1291 void *DriverData
; /**< Arbitrary device driver data */
1297 * Indexes for cube map faces.
1312 * Texture object state. Contains the array of mipmap images, border color,
1313 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1316 struct gl_texture_object
1318 _glthread_Mutex Mutex
; /**< for thread safety */
1319 GLint RefCount
; /**< reference count */
1320 GLuint Name
; /**< the user-visible texture object ID */
1321 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1322 GLfloat Priority
; /**< in [0,1] */
1327 } BorderColor
; /**< Interpreted according to texture format */
1328 GLenum WrapS
; /**< S-axis texture image wrap mode */
1329 GLenum WrapT
; /**< T-axis texture image wrap mode */
1330 GLenum WrapR
; /**< R-axis texture image wrap mode */
1331 GLenum MinFilter
; /**< minification filter */
1332 GLenum MagFilter
; /**< magnification filter */
1333 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1334 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1335 GLfloat LodBias
; /**< OpenGL 1.4 */
1336 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1337 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1338 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1339 GLenum CompareMode
; /**< GL_ARB_shadow */
1340 GLenum CompareFunc
; /**< GL_ARB_shadow */
1341 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1342 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1343 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1344 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1345 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1346 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1347 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1348 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1349 GLboolean _Complete
; /**< Is texture object complete? */
1350 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1351 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1352 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1354 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1355 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1357 /** GL_EXT_paletted_texture */
1358 struct gl_color_table Palette
;
1361 * \name For device driver.
1362 * Note: instead of attaching driver data to this pointer, it's preferable
1363 * to instead use this struct as a base class for your own texture object
1364 * class. Driver->NewTextureObject() can be used to implement the
1367 void *DriverData
; /**< Arbitrary device driver data */
1371 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1372 #define MAX_COMBINER_TERMS 4
1376 * Texture combine environment state.
1378 struct gl_tex_env_combine_state
1380 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1381 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1382 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1383 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1384 GLenum SourceA
[MAX_COMBINER_TERMS
];
1385 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1386 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1387 GLenum OperandA
[MAX_COMBINER_TERMS
];
1388 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1389 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1390 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1391 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1396 * Texture coord generation state.
1400 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1401 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1402 GLfloat ObjectPlane
[4];
1403 GLfloat EyePlane
[4];
1408 * Texture unit state. Contains enable flags, texture environment/function/
1409 * combiners, texgen state, pointers to current texture objects and
1410 * post-filter color tables.
1412 struct gl_texture_unit
1414 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1415 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1417 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1418 GLfloat EnvColor
[4];
1420 struct gl_texgen GenS
;
1421 struct gl_texgen GenT
;
1422 struct gl_texgen GenR
;
1423 struct gl_texgen GenQ
;
1424 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1425 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1427 GLfloat LodBias
; /**< for biasing mipmap levels */
1429 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1432 * \name GL_EXT_texture_env_combine
1434 struct gl_tex_env_combine_state Combine
;
1437 * Derived state based on \c EnvMode and the \c BaseFormat of the
1438 * currently enabled texture.
1440 struct gl_tex_env_combine_state _EnvMode
;
1443 * Currently enabled combiner state. This will point to either
1444 * \c Combine or \c _EnvMode.
1446 struct gl_tex_env_combine_state
*_CurrentCombine
;
1448 /** Current texture object pointers */
1449 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1451 /** Points to highest priority, complete and enabled texture object */
1452 struct gl_texture_object
*_Current
;
1454 /** GL_SGI_texture_color_table */
1456 struct gl_color_table ColorTable
;
1457 struct gl_color_table ProxyColorTable
;
1458 GLboolean ColorTableEnabled
;
1464 * Texture attribute group (GL_TEXTURE_BIT).
1466 struct gl_texture_attrib
1468 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1469 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1471 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1473 /** GL_ARB_seamless_cubemap */
1474 GLboolean CubeMapSeamless
;
1476 /** GL_EXT_shared_texture_palette */
1477 GLboolean SharedPalette
;
1478 struct gl_color_table Palette
;
1480 /** Texture units/samplers used by vertex or fragment texturing */
1481 GLbitfield _EnabledUnits
;
1483 /** Texture coord units/sets used for fragment texturing */
1484 GLbitfield _EnabledCoordUnits
;
1486 /** Texture coord units that have texgen enabled */
1487 GLbitfield _TexGenEnabled
;
1489 /** Texture coord units that have non-identity matrices */
1490 GLbitfield _TexMatEnabled
;
1492 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1493 GLbitfield _GenFlags
;
1498 * Transformation attribute group (GL_TRANSFORM_BIT).
1500 struct gl_transform_attrib
1502 GLenum MatrixMode
; /**< Matrix mode */
1503 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1504 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1505 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1506 GLboolean Normalize
; /**< Normalize all normals? */
1507 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1508 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1509 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1511 GLfloat CullEyePos
[4];
1512 GLfloat CullObjPos
[4];
1517 * Viewport attribute group (GL_VIEWPORT_BIT).
1519 struct gl_viewport_attrib
1521 GLint X
, Y
; /**< position */
1522 GLsizei Width
, Height
; /**< size */
1523 GLfloat Near
, Far
; /**< Depth buffer range */
1524 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1529 * GL_ARB_vertex/pixel_buffer_object buffer object
1531 struct gl_buffer_object
1533 _glthread_Mutex Mutex
;
1536 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1537 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1538 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1539 /** Fields describing a mapped buffer */
1541 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1542 GLvoid
*Pointer
; /**< User-space address of mapping */
1543 GLintptr Offset
; /**< Mapped offset */
1544 GLsizeiptr Length
; /**< Mapped length */
1546 GLboolean Written
; /**< Ever written to? (for debugging) */
1547 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1552 * Client pixel packing/unpacking attributes
1554 struct gl_pixelstore_attrib
1562 GLboolean SwapBytes
;
1564 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1565 GLboolean Invert
; /**< GL_MESA_pack_invert */
1566 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1571 * Client vertex array attributes
1573 struct gl_client_array
1575 GLint Size
; /**< components per element (1,2,3,4) */
1576 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1577 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1578 GLsizei Stride
; /**< user-specified stride */
1579 GLsizei StrideB
; /**< actual stride in bytes */
1580 const GLubyte
*Ptr
; /**< Points to array data */
1581 GLboolean Enabled
; /**< Enabled flag is a boolean */
1582 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1583 GLboolean Integer
; /**< Integer-valued? */
1584 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1585 GLuint _ElementSize
; /**< size of each element in bytes */
1587 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1588 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1593 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1594 * extension, but a nice encapsulation in any case.
1596 struct gl_array_object
1598 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1602 _glthread_Mutex Mutex
;
1603 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1605 /** Conventional vertex arrays */
1607 struct gl_client_array Vertex
;
1608 struct gl_client_array Weight
;
1609 struct gl_client_array Normal
;
1610 struct gl_client_array Color
;
1611 struct gl_client_array SecondaryColor
;
1612 struct gl_client_array FogCoord
;
1613 struct gl_client_array Index
;
1614 struct gl_client_array EdgeFlag
;
1615 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1616 struct gl_client_array PointSize
;
1620 * Generic arrays for vertex programs/shaders.
1621 * For NV vertex programs, these attributes alias and take priority
1622 * over the conventional attribs above. For ARB vertex programs and
1623 * GLSL vertex shaders, these attributes are separate.
1625 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1627 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1628 GLbitfield _Enabled
;
1631 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1632 * we can determine the max legal (in bounds) glDrawElements array index.
1639 * Vertex array state
1641 struct gl_array_attrib
1643 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1644 struct gl_array_object
*ArrayObj
;
1646 /** The default vertex array object */
1647 struct gl_array_object
*DefaultArrayObj
;
1649 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1650 struct _mesa_HashTable
*Objects
;
1652 GLint ActiveTexture
; /**< Client Active Texture */
1653 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1654 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1656 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1657 GLboolean PrimitiveRestart
;
1658 GLuint RestartIndex
;
1660 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1662 /* GL_ARB_vertex_buffer_object */
1663 struct gl_buffer_object
*ArrayBufferObj
;
1664 struct gl_buffer_object
*ElementArrayBufferObj
;
1669 * Feedback buffer state
1674 GLbitfield _Mask
; /**< FB_* bits */
1682 * Selection buffer state
1686 GLuint
*Buffer
; /**< selection buffer */
1687 GLuint BufferSize
; /**< size of the selection buffer */
1688 GLuint BufferCount
; /**< number of values in the selection buffer */
1689 GLuint Hits
; /**< number of records in the selection buffer */
1690 GLuint NameStackDepth
; /**< name stack depth */
1691 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1692 GLboolean HitFlag
; /**< hit flag */
1693 GLfloat HitMinZ
; /**< minimum hit depth */
1694 GLfloat HitMaxZ
; /**< maximum hit depth */
1699 * 1-D Evaluator control points
1703 GLuint Order
; /**< Number of control points */
1704 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1705 GLfloat
*Points
; /**< Points to contiguous control points */
1710 * 2-D Evaluator control points
1714 GLuint Uorder
; /**< Number of control points in U dimension */
1715 GLuint Vorder
; /**< Number of control points in V dimension */
1718 GLfloat
*Points
; /**< Points to contiguous control points */
1723 * All evaluator control point state
1725 struct gl_evaluators
1731 struct gl_1d_map Map1Vertex3
;
1732 struct gl_1d_map Map1Vertex4
;
1733 struct gl_1d_map Map1Index
;
1734 struct gl_1d_map Map1Color4
;
1735 struct gl_1d_map Map1Normal
;
1736 struct gl_1d_map Map1Texture1
;
1737 struct gl_1d_map Map1Texture2
;
1738 struct gl_1d_map Map1Texture3
;
1739 struct gl_1d_map Map1Texture4
;
1740 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1747 struct gl_2d_map Map2Vertex3
;
1748 struct gl_2d_map Map2Vertex4
;
1749 struct gl_2d_map Map2Index
;
1750 struct gl_2d_map Map2Color4
;
1751 struct gl_2d_map Map2Normal
;
1752 struct gl_2d_map Map2Texture1
;
1753 struct gl_2d_map Map2Texture2
;
1754 struct gl_2d_map Map2Texture3
;
1755 struct gl_2d_map Map2Texture4
;
1756 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1762 * Names of the various vertex/fragment program register files, etc.
1764 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1765 * All values should fit in a 4-bit field.
1767 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1768 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1769 * be "uniform" variables since they can only be set outside glBegin/End.
1770 * They're also all stored in the same Parameters array.
1774 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1775 PROGRAM_INPUT
, /**< machine->Inputs[] */
1776 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1777 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1778 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1779 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1780 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1781 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1782 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1783 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1784 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1785 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1786 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1787 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1788 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1794 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1795 * one of these values.
1799 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1800 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1801 SYSTEM_VALUE_MAX
/**< Number of values */
1805 /** Vertex and fragment instructions */
1806 struct prog_instruction
;
1807 struct gl_program_parameter_list
;
1808 struct gl_uniform_list
;
1812 * Base class for any kind of program object
1817 GLubyte
*String
; /**< Null-terminated program text */
1819 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1820 GLenum Format
; /**< String encoding format */
1823 struct prog_instruction
*Instructions
;
1825 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1826 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1827 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1828 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1829 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1830 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1831 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1832 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1835 /** Named parameters, constants, etc. from program text */
1836 struct gl_program_parameter_list
*Parameters
;
1837 /** Numbered local parameters */
1838 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1840 /** Vertex/fragment shader varying vars */
1841 struct gl_program_parameter_list
*Varying
;
1842 /** Vertex program user-defined attributes */
1843 struct gl_program_parameter_list
*Attributes
;
1845 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1846 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1847 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1848 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1850 /** Bitmask of which register files are read/written with indirect
1851 * addressing. Mask of (1 << PROGRAM_x) bits.
1853 GLbitfield IndirectRegisterFiles
;
1855 /** Logical counts */
1857 GLuint NumInstructions
;
1858 GLuint NumTemporaries
;
1859 GLuint NumParameters
;
1860 GLuint NumAttributes
;
1861 GLuint NumAddressRegs
;
1862 GLuint NumAluInstructions
;
1863 GLuint NumTexInstructions
;
1864 GLuint NumTexIndirections
;
1866 /** Native, actual h/w counts */
1868 GLuint NumNativeInstructions
;
1869 GLuint NumNativeTemporaries
;
1870 GLuint NumNativeParameters
;
1871 GLuint NumNativeAttributes
;
1872 GLuint NumNativeAddressRegs
;
1873 GLuint NumNativeAluInstructions
;
1874 GLuint NumNativeTexInstructions
;
1875 GLuint NumNativeTexIndirections
;
1880 /** Vertex program object */
1881 struct gl_vertex_program
1883 struct gl_program Base
; /**< base class */
1884 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1885 GLboolean IsPositionInvariant
;
1889 /** Geometry program object */
1890 struct gl_geometry_program
1892 struct gl_program Base
; /**< base class */
1895 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1896 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1897 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1901 /** Fragment program object */
1902 struct gl_fragment_program
1904 struct gl_program Base
; /**< base class */
1906 GLboolean UsesKill
; /**< shader uses KIL instruction */
1907 GLboolean OriginUpperLeft
;
1908 GLboolean PixelCenterInteger
;
1909 enum gl_frag_depth_layout FragDepthLayout
;
1914 * State common to vertex and fragment programs.
1916 struct gl_program_state
1918 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1919 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1924 * Context state for vertex programs.
1926 struct gl_vertex_program_state
1928 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1929 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1930 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1931 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1932 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1934 /** Currently enabled and valid vertex program (including internal
1935 * programs, user-defined vertex programs and GLSL vertex shaders).
1936 * This is the program we must use when rendering.
1938 struct gl_vertex_program
*_Current
;
1940 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1942 /* For GL_NV_vertex_program only: */
1943 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1944 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1946 /** Should fixed-function T&L be implemented with a vertex prog? */
1947 GLboolean _MaintainTnlProgram
;
1949 /** Program to emulate fixed-function T&L (see above) */
1950 struct gl_vertex_program
*_TnlProgram
;
1952 /** Cache of fixed-function programs */
1953 struct gl_program_cache
*Cache
;
1955 GLboolean _Overriden
;
1960 * Context state for geometry programs.
1962 struct gl_geometry_program_state
1964 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1965 GLboolean _Enabled
; /**< Enabled and valid program? */
1966 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1968 /** Currently enabled and valid program (including internal programs
1969 * and compiled shader programs).
1971 struct gl_geometry_program
*_Current
;
1973 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1975 /** Cache of fixed-function programs */
1976 struct gl_program_cache
*Cache
;
1980 * Context state for fragment programs.
1982 struct gl_fragment_program_state
1984 GLboolean Enabled
; /**< User-set fragment program enable flag */
1985 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1986 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1988 /** Currently enabled and valid fragment program (including internal
1989 * programs, user-defined fragment programs and GLSL fragment shaders).
1990 * This is the program we must use when rendering.
1992 struct gl_fragment_program
*_Current
;
1994 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1996 /** Should fixed-function texturing be implemented with a fragment prog? */
1997 GLboolean _MaintainTexEnvProgram
;
1999 /** Program to emulate fixed-function texture env/combine (see above) */
2000 struct gl_fragment_program
*_TexEnvProgram
;
2002 /** Cache of fixed-function programs */
2003 struct gl_program_cache
*Cache
;
2008 * ATI_fragment_shader runtime state
2010 #define ATI_FS_INPUT_PRIMARY 0
2011 #define ATI_FS_INPUT_SECONDARY 1
2013 struct atifs_instruction
;
2014 struct atifs_setupinst
;
2017 * ATI fragment shader
2019 struct ati_fragment_shader
2023 struct atifs_instruction
*Instructions
[2];
2024 struct atifs_setupinst
*SetupInst
[2];
2025 GLfloat Constants
[8][4];
2026 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2027 GLubyte numArithInstr
[2];
2028 GLubyte regsAssigned
[2];
2029 GLubyte NumPasses
; /**< 1 or 2 */
2031 GLubyte last_optype
;
2032 GLboolean interpinp1
;
2038 * Context state for GL_ATI_fragment_shader
2040 struct gl_ati_fragment_shader_state
2043 GLboolean _Enabled
; /**< enabled and valid shader? */
2044 GLboolean Compiling
;
2045 GLfloat GlobalConstants
[8][4];
2046 struct ati_fragment_shader
*Current
;
2051 * Occlusion/timer query object.
2053 struct gl_query_object
2055 GLenum Target
; /**< The query target, when active */
2056 GLuint Id
; /**< hash table ID/name */
2057 GLuint64EXT Result
; /**< the counter */
2058 GLboolean Active
; /**< inside Begin/EndQuery */
2059 GLboolean Ready
; /**< result is ready? */
2064 * Context state for query objects.
2066 struct gl_query_state
2068 struct _mesa_HashTable
*QueryObjects
;
2069 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2070 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2072 /** GL_NV_conditional_render */
2073 struct gl_query_object
*CondRenderQuery
;
2075 /** GL_EXT_transform_feedback */
2076 struct gl_query_object
*PrimitivesGenerated
;
2077 struct gl_query_object
*PrimitivesWritten
;
2079 /** GL_ARB_timer_query */
2080 struct gl_query_object
*TimeElapsed
;
2082 GLenum CondRenderMode
;
2086 /** Sync object state */
2087 struct gl_sync_object
{
2088 struct simple_node link
;
2089 GLenum Type
; /**< GL_SYNC_FENCE */
2090 GLuint Name
; /**< Fence name */
2091 GLint RefCount
; /**< Reference count */
2092 GLboolean DeletePending
; /**< Object was deleted while there were still
2093 * live references (e.g., sync not yet finished)
2095 GLenum SyncCondition
;
2096 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2097 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2101 /** Set by #pragma directives */
2102 struct gl_sl_pragmas
2104 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2105 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2106 GLboolean Optimize
; /**< defaults on */
2107 GLboolean Debug
; /**< defaults off */
2112 * A GLSL vertex or fragment shader object.
2116 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2117 GLuint Name
; /**< AKA the handle */
2118 GLint RefCount
; /**< Reference count */
2119 GLboolean DeletePending
;
2120 GLboolean CompileStatus
;
2121 GLboolean Main
; /**< shader defines main() */
2122 GLboolean UnresolvedRefs
;
2123 const GLchar
*Source
; /**< Source code string */
2124 GLuint SourceChecksum
; /**< for debug/logging purposes */
2125 struct gl_program
*Program
; /**< Post-compile assembly code */
2127 struct gl_sl_pragmas Pragmas
;
2129 unsigned Version
; /**< GLSL version used for linking */
2131 struct exec_list
*ir
;
2132 struct glsl_symbol_table
*symbols
;
2134 /** Shaders containing built-in functions that are used for linking. */
2135 struct gl_shader
*builtins_to_link
[16];
2136 unsigned num_builtins_to_link
;
2141 * A GLSL program object.
2142 * Basically a linked collection of vertex and fragment shaders.
2144 struct gl_shader_program
2146 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2147 GLuint Name
; /**< aka handle or ID */
2148 GLint RefCount
; /**< Reference count */
2149 GLboolean DeletePending
;
2151 GLuint NumShaders
; /**< number of attached shaders */
2152 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2154 /** User-defined attribute bindings (glBindAttribLocation) */
2155 struct gl_program_parameter_list
*Attributes
;
2157 /** Transform feedback varyings */
2161 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2162 } TransformFeedback
;
2164 /** Geometry shader state - copied into gl_geometry_program at link time */
2167 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2168 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2169 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2172 /* post-link info: */
2173 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2174 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2175 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2176 struct gl_uniform_list
*Uniforms
;
2177 struct gl_program_parameter_list
*Varying
;
2178 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2179 GLboolean Validated
;
2180 GLboolean _Used
; /**< Ever used for drawing? */
2183 unsigned Version
; /**< GLSL version used for linking */
2186 * Per-stage shaders resulting from the first stage of linking.
2188 * Set of linked shaders for this program. The array is accessed using the
2189 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2192 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2196 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2197 #define GLSL_LOG 0x2 /**< Write shaders to files */
2198 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2199 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2200 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2201 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2202 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2203 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2207 * Context state for GLSL vertex/fragment shaders.
2209 struct gl_shader_state
2212 * Programs used for rendering
2214 * There is a separate program set for each shader stage. If
2215 * GL_EXT_separate_shader_objects is not supported, each of these must point
2216 * to \c NULL or to the same program.
2218 struct gl_shader_program
*CurrentVertexProgram
;
2219 struct gl_shader_program
*CurrentGeometryProgram
;
2220 struct gl_shader_program
*CurrentFragmentProgram
;
2223 * Program used by glUniform calls.
2225 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2227 struct gl_shader_program
*ActiveProgram
;
2231 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2235 * Compiler options for a single GLSL shaders type
2237 struct gl_shader_compiler_options
2239 /** Driver-selectable options: */
2240 GLboolean EmitCondCodes
; /**< Use condition codes? */
2241 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2243 * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't
2244 * support control flow.
2246 GLboolean EmitNoIfs
;
2247 GLboolean EmitNoLoops
;
2248 GLboolean EmitNoFunctions
;
2249 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2250 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2251 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2252 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2255 * \name Forms of indirect addressing the driver cannot do.
2258 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2259 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2260 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2261 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2264 GLuint MaxUnrollIterations
;
2266 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2270 * Transform feedback object state
2272 struct gl_transform_feedback_object
2274 GLuint Name
; /**< AKA the object ID */
2276 GLboolean Active
; /**< Is transform feedback enabled? */
2277 GLboolean Paused
; /**< Is transform feedback paused? */
2279 /** The feedback buffers */
2280 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2281 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2283 /** Start of feedback data in dest buffer */
2284 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2285 /** Max data to put into dest buffer (in bytes) */
2286 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2291 * Context state for transform feedback.
2293 struct gl_transform_feedback
2295 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2297 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2299 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2300 struct gl_buffer_object
*CurrentBuffer
;
2302 /** The table of all transform feedback objects */
2303 struct _mesa_HashTable
*Objects
;
2305 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2306 struct gl_transform_feedback_object
*CurrentObject
;
2308 /** The default xform-fb object (Name==0) */
2309 struct gl_transform_feedback_object
*DefaultObject
;
2315 * State which can be shared by multiple contexts:
2317 struct gl_shared_state
2319 _glthread_Mutex Mutex
; /**< for thread safety */
2320 GLint RefCount
; /**< Reference count */
2321 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2322 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2324 /** Default texture objects (shared by all texture units) */
2325 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2327 /** Fallback texture used when a bound texture is incomplete */
2328 struct gl_texture_object
*FallbackTex
;
2331 * \name Thread safety and statechange notification for texture
2334 * \todo Improve the granularity of locking.
2337 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2338 GLuint TextureStateStamp
; /**< state notification for shared tex */
2341 /** Default buffer object for vertex arrays that aren't in VBOs */
2342 struct gl_buffer_object
*NullBufferObj
;
2345 * \name Vertex/geometry/fragment programs
2348 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2349 struct gl_vertex_program
*DefaultVertexProgram
;
2350 struct gl_fragment_program
*DefaultFragmentProgram
;
2351 struct gl_geometry_program
*DefaultGeometryProgram
;
2354 /* GL_ATI_fragment_shader */
2355 struct _mesa_HashTable
*ATIShaders
;
2356 struct ati_fragment_shader
*DefaultFragmentShader
;
2358 struct _mesa_HashTable
*BufferObjects
;
2360 /** Table of both gl_shader and gl_shader_program objects */
2361 struct _mesa_HashTable
*ShaderObjects
;
2363 /* GL_EXT_framebuffer_object */
2364 struct _mesa_HashTable
*RenderBuffers
;
2365 struct _mesa_HashTable
*FrameBuffers
;
2368 struct simple_node SyncObjects
;
2370 void *DriverData
; /**< Device driver shared state */
2377 * A renderbuffer stores colors or depth values or stencil values.
2378 * A framebuffer object will have a collection of these.
2379 * Data are read/written to the buffer with a handful of Get/Put functions.
2381 * Instances of this object are allocated with the Driver's NewRenderbuffer
2382 * hook. Drivers will likely wrap this class inside a driver-specific
2383 * class to simulate inheritance.
2385 struct gl_renderbuffer
2387 #define RB_MAGIC 0xaabbccdd
2388 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2389 _glthread_Mutex Mutex
; /**< for thread safety */
2390 GLuint ClassID
; /**< Useful for drivers */
2393 GLuint Width
, Height
;
2394 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2396 GLenum InternalFormat
; /**< The user-specified format */
2397 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2398 GL_STENCIL_INDEX. */
2399 GLuint Format
; /**< The actual format: MESA_FORMAT_x */
2403 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2404 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2406 /* Used to wrap one renderbuffer around another: */
2407 struct gl_renderbuffer
*Wrapped
;
2409 /* Delete this renderbuffer */
2410 void (*Delete
)(struct gl_renderbuffer
*rb
);
2412 /* Allocate new storage for this renderbuffer */
2413 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2414 GLenum internalFormat
,
2415 GLuint width
, GLuint height
);
2417 /* Lock/Unlock are called before/after calling the Get/Put functions.
2418 * Not sure this is the right place for these yet.
2419 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2420 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2423 /* Return a pointer to the element/pixel at (x,y).
2424 * Should return NULL if the buffer memory can't be directly addressed.
2426 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2429 /* Get/Read a row of values.
2430 * The values will be of format _BaseFormat and type DataType.
2432 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2433 GLint x
, GLint y
, void *values
);
2435 /* Get/Read values at arbitrary locations.
2436 * The values will be of format _BaseFormat and type DataType.
2438 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2439 const GLint x
[], const GLint y
[], void *values
);
2441 /* Put/Write a row of values.
2442 * The values will be of format _BaseFormat and type DataType.
2444 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2445 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2447 /* Put/Write a row of RGB values. This is a special-case routine that's
2448 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2449 * a common case for glDrawPixels and some triangle routines.
2450 * The values will be of format GL_RGB and type DataType.
2452 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2453 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2456 /* Put/Write a row of identical values.
2457 * The values will be of format _BaseFormat and type DataType.
2459 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2460 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2462 /* Put/Write values at arbitrary locations.
2463 * The values will be of format _BaseFormat and type DataType.
2465 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2466 const GLint x
[], const GLint y
[], const void *values
,
2467 const GLubyte
*mask
);
2468 /* Put/Write identical values at arbitrary locations.
2469 * The values will be of format _BaseFormat and type DataType.
2471 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2472 GLuint count
, const GLint x
[], const GLint y
[],
2473 const void *value
, const GLubyte
*mask
);
2478 * A renderbuffer attachment points to either a texture object (and specifies
2479 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2481 struct gl_renderbuffer_attachment
2483 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2487 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2488 * application supplied renderbuffer object.
2490 struct gl_renderbuffer
*Renderbuffer
;
2493 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2494 * supplied texture object.
2496 struct gl_texture_object
*Texture
;
2497 GLuint TextureLevel
; /**< Attached mipmap level. */
2498 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2499 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2500 * and 2D array textures */
2505 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2506 * In C++ terms, think of this as a base class from which device drivers
2507 * will make derived classes.
2509 struct gl_framebuffer
2511 _glthread_Mutex Mutex
; /**< for thread safety */
2513 * If zero, this is a window system framebuffer. If non-zero, this
2514 * is a FBO framebuffer; note that for some devices (i.e. those with
2515 * a natural pixel coordinate system for FBOs that differs from the
2516 * OpenGL/Mesa coordinate system), this means that the viewport,
2517 * polygon face orientation, and polygon stipple will have to be inverted.
2522 GLboolean DeletePending
;
2525 * The framebuffer's visual. Immutable if this is a window system buffer.
2526 * Computed from attachments if user-made FBO.
2528 struct gl_config Visual
;
2530 GLboolean Initialized
;
2532 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2534 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2536 GLint _Xmin
, _Xmax
; /**< inclusive */
2537 GLint _Ymin
, _Ymax
; /**< exclusive */
2540 /** \name Derived Z buffer stuff */
2542 GLuint _DepthMax
; /**< Max depth buffer value */
2543 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2544 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2547 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2550 /** Integer color values */
2551 GLboolean _IntegerColor
;
2553 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2554 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2556 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2557 * attribute group and GL_PIXEL attribute group, respectively.
2559 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2560 GLenum ColorReadBuffer
;
2562 /** Computed from ColorDraw/ReadBuffer above */
2563 GLuint _NumColorDrawBuffers
;
2564 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2565 GLint _ColorReadBufferIndex
; /* -1 = None */
2566 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2567 struct gl_renderbuffer
*_ColorReadBuffer
;
2569 /** The Actual depth/stencil buffers to use. May be wrappers around the
2570 * depth/stencil buffers attached above. */
2571 struct gl_renderbuffer
*_DepthBuffer
;
2572 struct gl_renderbuffer
*_StencilBuffer
;
2574 /** Delete this framebuffer */
2575 void (*Delete
)(struct gl_framebuffer
*fb
);
2580 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2584 GLushort RangeMin
; /**< min value exponent */
2585 GLushort RangeMax
; /**< max value exponent */
2586 GLushort Precision
; /**< number of mantissa bits */
2591 * Limits for vertex and fragment programs/shaders.
2593 struct gl_program_constants
2595 /* logical limits */
2596 GLuint MaxInstructions
;
2597 GLuint MaxAluInstructions
;
2598 GLuint MaxTexInstructions
;
2599 GLuint MaxTexIndirections
;
2602 GLuint MaxAddressRegs
;
2603 GLuint MaxParameters
;
2604 GLuint MaxLocalParams
;
2605 GLuint MaxEnvParams
;
2606 /* native/hardware limits */
2607 GLuint MaxNativeInstructions
;
2608 GLuint MaxNativeAluInstructions
;
2609 GLuint MaxNativeTexInstructions
;
2610 GLuint MaxNativeTexIndirections
;
2611 GLuint MaxNativeAttribs
;
2612 GLuint MaxNativeTemps
;
2613 GLuint MaxNativeAddressRegs
;
2614 GLuint MaxNativeParameters
;
2616 GLuint MaxUniformComponents
;
2617 /* GL_ARB_geometry_shader4 */
2618 GLuint MaxGeometryTextureImageUnits
;
2619 GLuint MaxGeometryVaryingComponents
;
2620 GLuint MaxVertexVaryingComponents
;
2621 GLuint MaxGeometryUniformComponents
;
2622 GLuint MaxGeometryOutputVertices
;
2623 GLuint MaxGeometryTotalOutputComponents
;
2624 /* ES 2.0 and GL_ARB_ES2_compatibility */
2625 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2626 struct gl_precision LowInt
, MediumInt
, HighInt
;
2631 * Constants which may be overridden by device driver during context creation
2632 * but are never changed after that.
2636 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2637 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2638 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2639 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2640 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2641 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2642 GLuint MaxTextureCoordUnits
;
2643 GLuint MaxTextureImageUnits
;
2644 GLuint MaxVertexTextureImageUnits
;
2645 GLuint MaxCombinedTextureImageUnits
;
2646 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2647 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2648 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2650 GLuint MaxArrayLockSize
;
2654 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2655 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2656 GLfloat PointSizeGranularity
;
2657 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2658 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2659 GLfloat LineWidthGranularity
;
2661 GLuint MaxColorTableSize
;
2663 GLuint MaxClipPlanes
;
2665 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2666 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2668 GLuint MaxViewportWidth
, MaxViewportHeight
;
2670 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2671 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2672 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2673 GLuint MaxProgramMatrices
;
2674 GLuint MaxProgramMatrixStackDepth
;
2676 /** vertex array / buffer object bounds checking */
2677 GLboolean CheckArrayBounds
;
2679 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2681 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2682 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2683 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2685 GLuint MaxVarying
; /**< Number of float[4] varying parameters */
2687 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2689 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2690 GLbitfield SupportedBumpUnits
;
2693 * Maximum amount of time, measured in nanseconds, that the server can wait.
2695 GLuint64 MaxServerWaitTimeout
;
2697 /** GL_EXT_provoking_vertex */
2698 GLboolean QuadsFollowProvokingVertexConvention
;
2700 /** OpenGL version 3.0 */
2701 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2703 /** OpenGL version 3.2 */
2704 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2706 /** GL_EXT_transform_feedback */
2707 GLuint MaxTransformFeedbackSeparateAttribs
;
2708 GLuint MaxTransformFeedbackSeparateComponents
;
2709 GLuint MaxTransformFeedbackInterleavedComponents
;
2711 /** GL_EXT_gpu_shader4 */
2712 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2714 /* GL_EXT_framebuffer_sRGB */
2715 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2720 * Enable flag for each OpenGL extension. Different device drivers will
2721 * enable different extensions at runtime.
2723 struct gl_extensions
2725 GLboolean dummy
; /* don't remove this! */
2726 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2727 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2728 GLboolean ARB_ES2_compatibility
;
2729 GLboolean ARB_blend_func_extended
;
2730 GLboolean ARB_copy_buffer
;
2731 GLboolean ARB_depth_buffer_float
;
2732 GLboolean ARB_depth_clamp
;
2733 GLboolean ARB_depth_texture
;
2734 GLboolean ARB_draw_buffers
;
2735 GLboolean ARB_draw_buffers_blend
;
2736 GLboolean ARB_draw_elements_base_vertex
;
2737 GLboolean ARB_draw_instanced
;
2738 GLboolean ARB_fragment_coord_conventions
;
2739 GLboolean ARB_fragment_program
;
2740 GLboolean ARB_fragment_program_shadow
;
2741 GLboolean ARB_fragment_shader
;
2742 GLboolean ARB_framebuffer_object
;
2743 GLboolean ARB_explicit_attrib_location
;
2744 GLboolean ARB_geometry_shader4
;
2745 GLboolean ARB_half_float_pixel
;
2746 GLboolean ARB_half_float_vertex
;
2747 GLboolean ARB_instanced_arrays
;
2748 GLboolean ARB_map_buffer_range
;
2749 GLboolean ARB_multisample
;
2750 GLboolean ARB_multitexture
;
2751 GLboolean ARB_occlusion_query
;
2752 GLboolean ARB_occlusion_query2
;
2753 GLboolean ARB_point_sprite
;
2754 GLboolean ARB_sampler_objects
;
2755 GLboolean ARB_seamless_cube_map
;
2756 GLboolean ARB_shader_objects
;
2757 GLboolean ARB_shader_stencil_export
;
2758 GLboolean ARB_shading_language_100
;
2759 GLboolean ARB_shadow
;
2760 GLboolean ARB_shadow_ambient
;
2762 GLboolean ARB_texture_border_clamp
;
2763 GLboolean ARB_texture_buffer_object
;
2764 GLboolean ARB_texture_compression
;
2765 GLboolean ARB_texture_compression_rgtc
;
2766 GLboolean ARB_texture_cube_map
;
2767 GLboolean ARB_texture_env_combine
;
2768 GLboolean ARB_texture_env_crossbar
;
2769 GLboolean ARB_texture_env_dot3
;
2770 GLboolean ARB_texture_float
;
2771 GLboolean ARB_texture_mirrored_repeat
;
2772 GLboolean ARB_texture_multisample
;
2773 GLboolean ARB_texture_non_power_of_two
;
2774 GLboolean ARB_texture_rg
;
2775 GLboolean ARB_texture_rgb10_a2ui
;
2776 GLboolean ARB_timer_query
;
2777 GLboolean ARB_transform_feedback2
;
2778 GLboolean ARB_transpose_matrix
;
2779 GLboolean ARB_uniform_buffer_object
;
2780 GLboolean ARB_vertex_array_object
;
2781 GLboolean ARB_vertex_buffer_object
;
2782 GLboolean ARB_vertex_program
;
2783 GLboolean ARB_vertex_shader
;
2784 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2785 GLboolean ARB_window_pos
;
2788 GLboolean EXT_blend_color
;
2789 GLboolean EXT_blend_equation_separate
;
2790 GLboolean EXT_blend_func_separate
;
2791 GLboolean EXT_blend_logic_op
;
2792 GLboolean EXT_blend_minmax
;
2793 GLboolean EXT_blend_subtract
;
2794 GLboolean EXT_clip_volume_hint
;
2795 GLboolean EXT_compiled_vertex_array
;
2796 GLboolean EXT_copy_texture
;
2797 GLboolean EXT_depth_bounds_test
;
2798 GLboolean EXT_draw_buffers2
;
2799 GLboolean EXT_draw_range_elements
;
2800 GLboolean EXT_fog_coord
;
2801 GLboolean EXT_framebuffer_blit
;
2802 GLboolean EXT_framebuffer_multisample
;
2803 GLboolean EXT_framebuffer_object
;
2804 GLboolean EXT_framebuffer_sRGB
;
2805 GLboolean EXT_gpu_program_parameters
;
2806 GLboolean EXT_gpu_shader4
;
2807 GLboolean EXT_multi_draw_arrays
;
2808 GLboolean EXT_paletted_texture
;
2809 GLboolean EXT_packed_depth_stencil
;
2810 GLboolean EXT_packed_float
;
2811 GLboolean EXT_packed_pixels
;
2812 GLboolean EXT_pixel_buffer_object
;
2813 GLboolean EXT_point_parameters
;
2814 GLboolean EXT_polygon_offset
;
2815 GLboolean EXT_provoking_vertex
;
2816 GLboolean EXT_rescale_normal
;
2817 GLboolean EXT_shadow_funcs
;
2818 GLboolean EXT_secondary_color
;
2819 GLboolean EXT_separate_shader_objects
;
2820 GLboolean EXT_separate_specular_color
;
2821 GLboolean EXT_shared_texture_palette
;
2822 GLboolean EXT_stencil_wrap
;
2823 GLboolean EXT_stencil_two_side
;
2824 GLboolean EXT_subtexture
;
2825 GLboolean EXT_texture
;
2826 GLboolean EXT_texture_object
;
2827 GLboolean EXT_texture3D
;
2828 GLboolean EXT_texture_array
;
2829 GLboolean EXT_texture_compression_s3tc
;
2830 GLboolean EXT_texture_env_add
;
2831 GLboolean EXT_texture_env_combine
;
2832 GLboolean EXT_texture_env_dot3
;
2833 GLboolean EXT_texture_filter_anisotropic
;
2834 GLboolean EXT_texture_integer
;
2835 GLboolean EXT_texture_lod_bias
;
2836 GLboolean EXT_texture_mirror_clamp
;
2837 GLboolean EXT_texture_shared_exponent
;
2838 GLboolean EXT_texture_sRGB
;
2839 GLboolean EXT_texture_sRGB_decode
;
2840 GLboolean EXT_texture_swizzle
;
2841 GLboolean EXT_transform_feedback
;
2842 GLboolean EXT_timer_query
;
2843 GLboolean EXT_vertex_array
;
2844 GLboolean EXT_vertex_array_bgra
;
2845 GLboolean EXT_vertex_array_set
;
2846 GLboolean OES_standard_derivatives
;
2847 /* vendor extensions */
2848 GLboolean AMD_conservative_depth
;
2849 GLboolean APPLE_client_storage
;
2850 GLboolean APPLE_packed_pixels
;
2851 GLboolean APPLE_vertex_array_object
;
2852 GLboolean APPLE_object_purgeable
;
2853 GLboolean ATI_envmap_bumpmap
;
2854 GLboolean ATI_texture_mirror_once
;
2855 GLboolean ATI_texture_env_combine3
;
2856 GLboolean ATI_fragment_shader
;
2857 GLboolean ATI_separate_stencil
;
2858 GLboolean IBM_rasterpos_clip
;
2859 GLboolean IBM_multimode_draw_arrays
;
2860 GLboolean MESA_pack_invert
;
2861 GLboolean MESA_resize_buffers
;
2862 GLboolean MESA_ycbcr_texture
;
2863 GLboolean MESA_texture_array
;
2864 GLboolean MESA_texture_signed_rgba
;
2865 GLboolean NV_blend_square
;
2866 GLboolean NV_conditional_render
;
2867 GLboolean NV_fragment_program
;
2868 GLboolean NV_fragment_program_option
;
2869 GLboolean NV_light_max_exponent
;
2870 GLboolean NV_point_sprite
;
2871 GLboolean NV_primitive_restart
;
2872 GLboolean NV_texgen_reflection
;
2873 GLboolean NV_texture_env_combine4
;
2874 GLboolean NV_texture_rectangle
;
2875 GLboolean NV_vertex_program
;
2876 GLboolean NV_vertex_program1_1
;
2877 GLboolean OES_read_format
;
2878 GLboolean SGI_texture_color_table
;
2879 GLboolean SGIS_generate_mipmap
;
2880 GLboolean SGIS_texture_edge_clamp
;
2881 GLboolean SGIS_texture_lod
;
2882 GLboolean TDFX_texture_compression_FXT1
;
2884 GLboolean OES_EGL_image
;
2885 GLboolean OES_draw_texture
;
2886 GLboolean EXT_texture_format_BGRA8888
;
2887 GLboolean extension_sentinel
;
2888 /** The extension string */
2889 const GLubyte
*String
;
2890 /** Number of supported extensions */
2896 * A stack of matrices (projection, modelview, color, texture, etc).
2898 struct gl_matrix_stack
2900 GLmatrix
*Top
; /**< points into Stack */
2901 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2902 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2903 GLuint MaxDepth
; /**< size of Stack[] array */
2904 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2909 * \name Bits for image transfer operations
2910 * \sa __struct gl_contextRec::ImageTransferState.
2913 #define IMAGE_SCALE_BIAS_BIT 0x1
2914 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2915 #define IMAGE_MAP_COLOR_BIT 0x4
2916 #define IMAGE_CLAMP_BIT 0x800
2919 /** Pixel Transfer ops */
2920 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2921 IMAGE_SHIFT_OFFSET_BIT | \
2922 IMAGE_MAP_COLOR_BIT)
2925 * \name Bits to indicate what state has changed.
2928 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2929 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2930 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2931 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2932 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2933 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2934 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2935 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2936 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2937 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2938 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2939 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2940 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2941 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2942 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2943 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2944 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2945 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2946 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2947 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2948 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2949 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2950 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2951 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2952 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2953 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2954 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2955 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2956 #define _NEW_BUFFER_OBJECT (1 << 28)
2962 * \name Bits to track array state changes
2964 * Also used to summarize array enabled.
2967 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2968 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2969 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2970 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2971 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2972 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2973 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2974 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2975 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2976 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2977 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2978 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2979 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2980 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2981 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2982 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2983 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2984 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2985 #define _NEW_ARRAY_ALL 0xffffffff
2988 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2989 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2995 * \name A bunch of flags that we think might be useful to drivers.
2997 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3000 #define DD_FLATSHADE 0x1
3001 #define DD_SEPARATE_SPECULAR 0x2
3002 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3003 #define DD_TRI_LIGHT_TWOSIDE 0x8
3004 #define DD_TRI_UNFILLED 0x10
3005 #define DD_TRI_SMOOTH 0x20
3006 #define DD_TRI_STIPPLE 0x40
3007 #define DD_TRI_OFFSET 0x80
3008 #define DD_LINE_SMOOTH 0x100
3009 #define DD_LINE_STIPPLE 0x200
3010 #define DD_POINT_SMOOTH 0x400
3011 #define DD_POINT_ATTEN 0x800
3012 #define DD_TRI_TWOSTENCIL 0x1000
3017 * \name Define the state changes under which each of these bits might change
3020 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3021 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3022 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3023 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3024 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3025 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3026 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3027 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3028 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3029 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3030 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3031 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3032 #define _DD_NEW_POINT_SIZE _NEW_POINT
3033 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3038 * Composite state flags
3041 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3047 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
3050 #define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL)
3056 /* This has to be included here. */
3061 * Display list flags.
3062 * Strictly this is a tnl-private concept, but it doesn't seem
3063 * worthwhile adding a tnl private structure just to hold this one bit
3066 #define DLIST_DANGLING_REFS 0x1
3069 /** Opaque declaration of display list payload data type */
3070 union gl_dlist_node
;
3074 * Provide a location where information about a display list can be
3075 * collected. Could be extended with driverPrivate structures,
3076 * etc. in the future.
3078 struct gl_display_list
3081 GLbitfield Flags
; /**< DLIST_x flags */
3082 /** The dlist commands are in a linked list of nodes */
3083 union gl_dlist_node
*Head
;
3088 * State used during display list compilation and execution.
3090 struct gl_dlist_state
3092 GLuint CallDepth
; /**< Current recursion calling depth */
3094 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3095 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3096 GLuint CurrentPos
; /**< Index into current block of nodes */
3098 GLvertexformat ListVtxfmt
;
3100 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3101 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3103 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3104 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3106 GLubyte ActiveIndex
;
3107 GLfloat CurrentIndex
;
3109 GLubyte ActiveEdgeFlag
;
3110 GLboolean CurrentEdgeFlag
;
3113 /* State known to have been set by the currently-compiling display
3114 * list. Used to eliminate some redundant state changes.
3122 * Enum for the OpenGL APIs we know about and may support.
3133 * Mesa rendering context.
3135 * This is the central context data structure for Mesa. Almost all
3136 * OpenGL state is contained in this structure.
3137 * Think of this as a base class from which device drivers will derive
3140 * The struct gl_context typedef names this structure.
3144 /** State possibly shared with other contexts in the address space */
3145 struct gl_shared_state
*Shared
;
3147 /** \name API function pointer tables */
3150 struct _glapi_table
*Save
; /**< Display list save functions */
3151 struct _glapi_table
*Exec
; /**< Execute functions */
3152 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3155 struct gl_config Visual
;
3156 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3157 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3158 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3159 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3162 * Device driver function pointer table
3164 struct dd_function_table Driver
;
3166 void *DriverCtx
; /**< Points to device driver context/state */
3168 /** Core/Driver constants */
3169 struct gl_constants Const
;
3171 /** \name The various 4x4 matrix stacks */
3173 struct gl_matrix_stack ModelviewMatrixStack
;
3174 struct gl_matrix_stack ProjectionMatrixStack
;
3175 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3176 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3177 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3180 /** Combined modelview and projection matrix */
3181 GLmatrix _ModelProjectMatrix
;
3183 /** \name Display lists */
3184 struct gl_dlist_state ListState
;
3186 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3187 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3189 /** Extension information */
3190 struct gl_extensions Extensions
;
3193 GLuint VersionMajor
, VersionMinor
;
3194 char *VersionString
;
3196 /** \name State attribute stack (for glPush/PopAttrib) */
3198 GLuint AttribStackDepth
;
3199 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3202 /** \name Renderer attribute groups
3204 * We define a struct for each attribute group to make pushing and popping
3205 * attributes easy. Also it's a good organization.
3208 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3209 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3210 struct gl_current_attrib Current
; /**< Current attributes */
3211 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3212 struct gl_eval_attrib Eval
; /**< Eval attributes */
3213 struct gl_fog_attrib Fog
; /**< Fog attributes */
3214 struct gl_hint_attrib Hint
; /**< Hint attributes */
3215 struct gl_light_attrib Light
; /**< Light attributes */
3216 struct gl_line_attrib Line
; /**< Line attributes */
3217 struct gl_list_attrib List
; /**< List attributes */
3218 struct gl_multisample_attrib Multisample
;
3219 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3220 struct gl_point_attrib Point
; /**< Point attributes */
3221 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3222 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3223 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3224 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3225 struct gl_texture_attrib Texture
; /**< Texture attributes */
3226 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3227 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3230 /** \name Client attribute stack */
3232 GLuint ClientAttribStackDepth
;
3233 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3236 /** \name Client attribute groups */
3238 struct gl_array_attrib Array
; /**< Vertex arrays */
3239 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3240 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3241 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3244 /** \name Other assorted state (not pushed/popped on attribute stack) */
3246 struct gl_pixelmaps PixelMaps
;
3248 struct gl_evaluators EvalMap
; /**< All evaluators */
3249 struct gl_feedback Feedback
; /**< Feedback */
3250 struct gl_selection Select
; /**< Selection */
3252 struct gl_program_state Program
; /**< general program state */
3253 struct gl_vertex_program_state VertexProgram
;
3254 struct gl_fragment_program_state FragmentProgram
;
3255 struct gl_geometry_program_state GeometryProgram
;
3256 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3258 struct gl_shader_state Shader
; /**< GLSL shader object state */
3259 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3261 struct gl_query_state Query
; /**< occlusion, timer queries */
3263 struct gl_transform_feedback TransformFeedback
;
3265 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3266 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3269 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3271 /* GL_EXT_framebuffer_object */
3272 struct gl_renderbuffer
*CurrentRenderbuffer
;
3274 GLenum ErrorValue
; /**< Last error code */
3277 * Recognize and silence repeated error debug messages in buggy apps.
3279 const char *ErrorDebugFmtString
;
3280 GLuint ErrorDebugCount
;
3282 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3283 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3285 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3287 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3289 /** \name Derived state */
3291 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3292 * state validation so they need to always be current.
3294 GLbitfield _TriangleCaps
;
3295 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3296 GLfloat _EyeZDir
[3];
3297 GLfloat _ModelViewInvScale
;
3298 GLboolean _NeedEyeCoords
;
3299 GLboolean _ForceEyeCoords
;
3301 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3303 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3304 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3307 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3309 /** \name For debugging/development only */
3311 GLboolean FirstTimeCurrent
;
3314 /** Dither disable via MESA_NO_DITHER env var */
3317 /** software compression/decompression supported or not */
3318 GLboolean Mesa_DXTn
;
3320 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3323 * Use dp4 (rather than mul/mad) instructions for position
3326 GLboolean mvp_with_dp4
;
3329 * \name Hooks for module contexts.
3331 * These will eventually live in the driver or elsewhere.
3334 void *swrast_context
;
3335 void *swsetup_context
;
3336 void *swtnl_context
;
3338 struct st_context
*st
;
3345 extern int MESA_VERBOSE
;
3346 extern int MESA_DEBUG_FLAGS
;
3347 # define MESA_FUNCTION __FUNCTION__
3349 # define MESA_VERBOSE 0
3350 # define MESA_DEBUG_FLAGS 0
3351 # define MESA_FUNCTION "a function"
3358 /** The MESA_VERBOSE var is a bitmask of these flags */
3361 VERBOSE_VARRAY
= 0x0001,
3362 VERBOSE_TEXTURE
= 0x0002,
3363 VERBOSE_MATERIAL
= 0x0004,
3364 VERBOSE_PIPELINE
= 0x0008,
3365 VERBOSE_DRIVER
= 0x0010,
3366 VERBOSE_STATE
= 0x0020,
3367 VERBOSE_API
= 0x0040,
3368 VERBOSE_DISPLAY_LIST
= 0x0100,
3369 VERBOSE_LIGHTING
= 0x0200,
3370 VERBOSE_PRIMS
= 0x0400,
3371 VERBOSE_VERTS
= 0x0800,
3372 VERBOSE_DISASSEM
= 0x1000,
3373 VERBOSE_DRAW
= 0x2000,
3374 VERBOSE_SWAPBUFFERS
= 0x4000
3378 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3381 DEBUG_ALWAYS_FLUSH
= 0x1
3386 #endif /* MTYPES_H */