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 * Hint attribute group (GL_HINT_BIT).
873 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
875 struct gl_hint_attrib
877 GLenum PerspectiveCorrection
;
880 GLenum PolygonSmooth
;
882 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
883 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
884 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
885 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
892 #define LIGHT_SPOT 0x1
893 #define LIGHT_LOCAL_VIEWER 0x2
894 #define LIGHT_POSITIONAL 0x4
895 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
900 * Lighting attribute group (GL_LIGHT_BIT).
902 struct gl_light_attrib
904 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
905 struct gl_lightmodel Model
; /**< Lighting model */
908 * Must flush FLUSH_VERTICES before referencing:
911 struct gl_material Material
; /**< Includes front & back values */
914 GLboolean Enabled
; /**< Lighting enabled flag */
915 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
916 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
917 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
918 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
919 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
920 GLboolean ColorMaterialEnabled
;
921 GLenum ClampVertexColor
;
923 struct gl_light EnabledList
; /**< List sentinel */
926 * Derived state for optimizations:
929 GLboolean _NeedEyeCoords
;
930 GLboolean _NeedVertices
; /**< Use fast shader? */
931 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
932 GLfloat _BaseColor
[2][3];
938 * Line attribute group (GL_LINE_BIT).
940 struct gl_line_attrib
942 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
943 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
944 GLushort StipplePattern
; /**< Stipple pattern */
945 GLint StippleFactor
; /**< Stipple repeat factor */
946 GLfloat Width
; /**< Line width */
951 * Display list attribute group (GL_LIST_BIT).
953 struct gl_list_attrib
960 * Multisample attribute group (GL_MULTISAMPLE_BIT).
962 struct gl_multisample_attrib
965 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
966 GLboolean SampleAlphaToCoverage
;
967 GLboolean SampleAlphaToOne
;
968 GLboolean SampleCoverage
;
969 GLfloat SampleCoverageValue
;
970 GLboolean SampleCoverageInvert
;
975 * A pixelmap (see glPixelMap)
980 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
981 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
986 * Collection of all pixelmaps
990 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
991 struct gl_pixelmap GtoG
;
992 struct gl_pixelmap BtoB
;
993 struct gl_pixelmap AtoA
;
994 struct gl_pixelmap ItoR
;
995 struct gl_pixelmap ItoG
;
996 struct gl_pixelmap ItoB
;
997 struct gl_pixelmap ItoA
;
998 struct gl_pixelmap ItoI
;
999 struct gl_pixelmap StoS
;
1004 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1006 struct gl_pixel_attrib
1008 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1010 /*--- Begin Pixel Transfer State ---*/
1011 /* Fields are in the order in which they're applied... */
1013 /** Scale & Bias (index shift, offset) */
1015 GLfloat RedBias
, RedScale
;
1016 GLfloat GreenBias
, GreenScale
;
1017 GLfloat BlueBias
, BlueScale
;
1018 GLfloat AlphaBias
, AlphaScale
;
1019 GLfloat DepthBias
, DepthScale
;
1020 GLint IndexShift
, IndexOffset
;
1024 /* Note: actual pixel maps are not part of this attrib group */
1025 GLboolean MapColorFlag
;
1026 GLboolean MapStencilFlag
;
1028 /*--- End Pixel Transfer State ---*/
1031 GLfloat ZoomX
, ZoomY
;
1033 /** GL_SGI_texture_color_table */
1034 GLfloat TextureColorTableScale
[4]; /**< RGBA */
1035 GLfloat TextureColorTableBias
[4]; /**< RGBA */
1040 * Point attribute group (GL_POINT_BIT).
1042 struct gl_point_attrib
1044 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1045 GLfloat Size
; /**< User-specified point size */
1046 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1047 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1048 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1049 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1050 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1051 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1052 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1053 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1058 * Polygon attribute group (GL_POLYGON_BIT).
1060 struct gl_polygon_attrib
1062 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1063 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1064 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1065 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1066 GLboolean CullFlag
; /**< Culling on/off flag */
1067 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1068 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1069 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1070 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1071 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1072 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1073 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1074 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1079 * Scissor attributes (GL_SCISSOR_BIT).
1081 struct gl_scissor_attrib
1083 GLboolean Enabled
; /**< Scissor test enabled? */
1084 GLint X
, Y
; /**< Lower left corner of box */
1085 GLsizei Width
, Height
; /**< Size of box */
1090 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1092 * Three sets of stencil data are tracked so that OpenGL 2.0,
1093 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1094 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1095 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1096 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1097 * GL_EXT_stencil_two_side GL_BACK state.
1099 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1100 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1102 * The derived value \c _TestTwoSide is set when the front-face and back-face
1103 * stencil state are different.
1105 struct gl_stencil_attrib
1107 GLboolean Enabled
; /**< Enabled flag */
1108 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1109 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1110 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1111 GLboolean _TestTwoSide
;
1112 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1113 GLenum Function
[3]; /**< Stencil function */
1114 GLenum FailFunc
[3]; /**< Fail function */
1115 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1116 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1117 GLint Ref
[3]; /**< Reference value */
1118 GLuint ValueMask
[3]; /**< Value mask */
1119 GLuint WriteMask
[3]; /**< Write mask */
1120 GLuint Clear
; /**< Clear value */
1125 * An index for each type of texture object. These correspond to the GL
1126 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1127 * Note: the order is from highest priority to lowest priority.
1131 TEXTURE_2D_ARRAY_INDEX
,
1132 TEXTURE_1D_ARRAY_INDEX
,
1143 * Bit flags for each type of texture object
1144 * Used for Texture.Unit[]._ReallyEnabled flags.
1147 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1148 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1149 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1150 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1151 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1152 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1153 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1158 * TexGenEnabled flags.
1165 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1170 * Bit flag versions of the corresponding GL_ constants.
1173 #define TEXGEN_SPHERE_MAP 0x1
1174 #define TEXGEN_OBJ_LINEAR 0x2
1175 #define TEXGEN_EYE_LINEAR 0x4
1176 #define TEXGEN_REFLECTION_MAP_NV 0x8
1177 #define TEXGEN_NORMAL_MAP_NV 0x10
1179 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1180 TEXGEN_REFLECTION_MAP_NV | \
1181 TEXGEN_NORMAL_MAP_NV)
1182 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1183 TEXGEN_REFLECTION_MAP_NV | \
1184 TEXGEN_NORMAL_MAP_NV | \
1190 /** Tex-gen enabled for texture unit? */
1191 #define ENABLE_TEXGEN(unit) (1 << (unit))
1193 /** Non-identity texture matrix for texture unit? */
1194 #define ENABLE_TEXMAT(unit) (1 << (unit))
1198 * Texel fetch function prototype. We use texel fetch functions to
1199 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1200 * texture images. These functions help to isolate us from the gritty
1201 * details of all the various texture image encodings.
1203 * \param texImage texture image.
1204 * \param col texel column.
1205 * \param row texel row.
1206 * \param img texel image level/layer.
1207 * \param texelOut output texel (up to 4 GLchans)
1209 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1210 GLint col
, GLint row
, GLint img
,
1214 * As above, but returns floats.
1215 * Used for depth component images and for upcoming signed/float
1218 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1219 GLint col
, GLint row
, GLint img
,
1220 GLfloat
*texelOut
);
1223 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1224 GLint col
, GLint row
, GLint img
,
1229 * Texture image state. Describes the dimensions of a texture image,
1230 * the texel format and pointers to Texel Fetch functions.
1232 struct gl_texture_image
1234 GLint InternalFormat
; /**< Internal format as given by the user */
1235 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1236 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1237 * GL_INTENSITY, GL_COLOR_INDEX,
1238 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1239 * only. Used for choosing TexEnv arithmetic.
1241 GLuint TexFormat
; /**< The actual format: MESA_FORMAT_x */
1243 GLuint Border
; /**< 0 or 1 */
1244 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1245 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1246 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1247 GLuint Width2
; /**< = Width - 2*Border */
1248 GLuint Height2
; /**< = Height - 2*Border */
1249 GLuint Depth2
; /**< = Depth - 2*Border */
1250 GLuint WidthLog2
; /**< = log2(Width2) */
1251 GLuint HeightLog2
; /**< = log2(Height2) */
1252 GLuint DepthLog2
; /**< = log2(Depth2) */
1253 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1254 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1255 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1256 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1257 GLboolean IsClientData
; /**< Data owned by client? */
1258 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1260 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1262 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1263 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1265 GLuint RowStride
; /**< Padded width in units of texels */
1266 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1267 each 2D slice in 'Data', in texels */
1268 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1271 * \name For device driver:
1274 void *DriverData
; /**< Arbitrary device driver data */
1280 * Indexes for cube map faces.
1295 * Texture object state. Contains the array of mipmap images, border color,
1296 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1299 struct gl_texture_object
1301 _glthread_Mutex Mutex
; /**< for thread safety */
1302 GLint RefCount
; /**< reference count */
1303 GLuint Name
; /**< the user-visible texture object ID */
1304 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1305 GLfloat Priority
; /**< in [0,1] */
1310 } BorderColor
; /**< Interpreted according to texture format */
1311 GLenum WrapS
; /**< S-axis texture image wrap mode */
1312 GLenum WrapT
; /**< T-axis texture image wrap mode */
1313 GLenum WrapR
; /**< R-axis texture image wrap mode */
1314 GLenum MinFilter
; /**< minification filter */
1315 GLenum MagFilter
; /**< magnification filter */
1316 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1317 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1318 GLfloat LodBias
; /**< OpenGL 1.4 */
1319 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1320 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1321 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1322 GLenum CompareMode
; /**< GL_ARB_shadow */
1323 GLenum CompareFunc
; /**< GL_ARB_shadow */
1324 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1325 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1326 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1327 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1328 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1329 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1330 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1331 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1332 GLboolean _Complete
; /**< Is texture object complete? */
1333 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1334 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1335 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1337 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1338 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1340 /** GL_EXT_paletted_texture */
1341 struct gl_color_table Palette
;
1344 * \name For device driver.
1345 * Note: instead of attaching driver data to this pointer, it's preferable
1346 * to instead use this struct as a base class for your own texture object
1347 * class. Driver->NewTextureObject() can be used to implement the
1350 void *DriverData
; /**< Arbitrary device driver data */
1354 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1355 #define MAX_COMBINER_TERMS 4
1359 * Texture combine environment state.
1361 struct gl_tex_env_combine_state
1363 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1364 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1365 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1366 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1367 GLenum SourceA
[MAX_COMBINER_TERMS
];
1368 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1369 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1370 GLenum OperandA
[MAX_COMBINER_TERMS
];
1371 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1372 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1373 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1374 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1379 * Texture coord generation state.
1383 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1384 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1385 GLfloat ObjectPlane
[4];
1386 GLfloat EyePlane
[4];
1391 * Texture unit state. Contains enable flags, texture environment/function/
1392 * combiners, texgen state, pointers to current texture objects and
1393 * post-filter color tables.
1395 struct gl_texture_unit
1397 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1398 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1400 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1401 GLfloat EnvColor
[4];
1403 struct gl_texgen GenS
;
1404 struct gl_texgen GenT
;
1405 struct gl_texgen GenR
;
1406 struct gl_texgen GenQ
;
1407 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1408 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1410 GLfloat LodBias
; /**< for biasing mipmap levels */
1412 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1415 * \name GL_EXT_texture_env_combine
1417 struct gl_tex_env_combine_state Combine
;
1420 * Derived state based on \c EnvMode and the \c BaseFormat of the
1421 * currently enabled texture.
1423 struct gl_tex_env_combine_state _EnvMode
;
1426 * Currently enabled combiner state. This will point to either
1427 * \c Combine or \c _EnvMode.
1429 struct gl_tex_env_combine_state
*_CurrentCombine
;
1431 /** Current texture object pointers */
1432 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1434 /** Points to highest priority, complete and enabled texture object */
1435 struct gl_texture_object
*_Current
;
1437 /** GL_SGI_texture_color_table */
1439 struct gl_color_table ColorTable
;
1440 struct gl_color_table ProxyColorTable
;
1441 GLboolean ColorTableEnabled
;
1447 * Texture attribute group (GL_TEXTURE_BIT).
1449 struct gl_texture_attrib
1451 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1452 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1454 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1456 /** GL_ARB_seamless_cubemap */
1457 GLboolean CubeMapSeamless
;
1459 /** GL_EXT_shared_texture_palette */
1460 GLboolean SharedPalette
;
1461 struct gl_color_table Palette
;
1463 /** Texture units/samplers used by vertex or fragment texturing */
1464 GLbitfield _EnabledUnits
;
1466 /** Texture coord units/sets used for fragment texturing */
1467 GLbitfield _EnabledCoordUnits
;
1469 /** Texture coord units that have texgen enabled */
1470 GLbitfield _TexGenEnabled
;
1472 /** Texture coord units that have non-identity matrices */
1473 GLbitfield _TexMatEnabled
;
1475 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1476 GLbitfield _GenFlags
;
1481 * Transformation attribute group (GL_TRANSFORM_BIT).
1483 struct gl_transform_attrib
1485 GLenum MatrixMode
; /**< Matrix mode */
1486 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1487 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1488 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1489 GLboolean Normalize
; /**< Normalize all normals? */
1490 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1491 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1492 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1494 GLfloat CullEyePos
[4];
1495 GLfloat CullObjPos
[4];
1500 * Viewport attribute group (GL_VIEWPORT_BIT).
1502 struct gl_viewport_attrib
1504 GLint X
, Y
; /**< position */
1505 GLsizei Width
, Height
; /**< size */
1506 GLfloat Near
, Far
; /**< Depth buffer range */
1507 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1512 * GL_ARB_vertex/pixel_buffer_object buffer object
1514 struct gl_buffer_object
1516 _glthread_Mutex Mutex
;
1519 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1520 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1521 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1522 /** Fields describing a mapped buffer */
1524 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1525 GLvoid
*Pointer
; /**< User-space address of mapping */
1526 GLintptr Offset
; /**< Mapped offset */
1527 GLsizeiptr Length
; /**< Mapped length */
1529 GLboolean Written
; /**< Ever written to? (for debugging) */
1530 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1535 * Client pixel packing/unpacking attributes
1537 struct gl_pixelstore_attrib
1545 GLboolean SwapBytes
;
1547 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1548 GLboolean Invert
; /**< GL_MESA_pack_invert */
1549 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1554 * Client vertex array attributes
1556 struct gl_client_array
1558 GLint Size
; /**< components per element (1,2,3,4) */
1559 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1560 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1561 GLsizei Stride
; /**< user-specified stride */
1562 GLsizei StrideB
; /**< actual stride in bytes */
1563 const GLubyte
*Ptr
; /**< Points to array data */
1564 GLboolean Enabled
; /**< Enabled flag is a boolean */
1565 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1566 GLboolean Integer
; /**< Integer-valued? */
1567 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1568 GLuint _ElementSize
; /**< size of each element in bytes */
1570 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1571 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1576 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1577 * extension, but a nice encapsulation in any case.
1579 struct gl_array_object
1581 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1585 _glthread_Mutex Mutex
;
1586 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1588 /** Conventional vertex arrays */
1590 struct gl_client_array Vertex
;
1591 struct gl_client_array Weight
;
1592 struct gl_client_array Normal
;
1593 struct gl_client_array Color
;
1594 struct gl_client_array SecondaryColor
;
1595 struct gl_client_array FogCoord
;
1596 struct gl_client_array Index
;
1597 struct gl_client_array EdgeFlag
;
1598 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1599 struct gl_client_array PointSize
;
1603 * Generic arrays for vertex programs/shaders.
1604 * For NV vertex programs, these attributes alias and take priority
1605 * over the conventional attribs above. For ARB vertex programs and
1606 * GLSL vertex shaders, these attributes are separate.
1608 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1610 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1611 GLbitfield _Enabled
;
1614 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1615 * we can determine the max legal (in bounds) glDrawElements array index.
1622 * Vertex array state
1624 struct gl_array_attrib
1626 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1627 struct gl_array_object
*ArrayObj
;
1629 /** The default vertex array object */
1630 struct gl_array_object
*DefaultArrayObj
;
1632 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1633 struct _mesa_HashTable
*Objects
;
1635 GLint ActiveTexture
; /**< Client Active Texture */
1636 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1637 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1639 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1640 GLboolean PrimitiveRestart
;
1641 GLuint RestartIndex
;
1643 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1645 /* GL_ARB_vertex_buffer_object */
1646 struct gl_buffer_object
*ArrayBufferObj
;
1647 struct gl_buffer_object
*ElementArrayBufferObj
;
1652 * Feedback buffer state
1657 GLbitfield _Mask
; /**< FB_* bits */
1665 * Selection buffer state
1669 GLuint
*Buffer
; /**< selection buffer */
1670 GLuint BufferSize
; /**< size of the selection buffer */
1671 GLuint BufferCount
; /**< number of values in the selection buffer */
1672 GLuint Hits
; /**< number of records in the selection buffer */
1673 GLuint NameStackDepth
; /**< name stack depth */
1674 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1675 GLboolean HitFlag
; /**< hit flag */
1676 GLfloat HitMinZ
; /**< minimum hit depth */
1677 GLfloat HitMaxZ
; /**< maximum hit depth */
1682 * 1-D Evaluator control points
1686 GLuint Order
; /**< Number of control points */
1687 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1688 GLfloat
*Points
; /**< Points to contiguous control points */
1693 * 2-D Evaluator control points
1697 GLuint Uorder
; /**< Number of control points in U dimension */
1698 GLuint Vorder
; /**< Number of control points in V dimension */
1701 GLfloat
*Points
; /**< Points to contiguous control points */
1706 * All evaluator control point state
1708 struct gl_evaluators
1714 struct gl_1d_map Map1Vertex3
;
1715 struct gl_1d_map Map1Vertex4
;
1716 struct gl_1d_map Map1Index
;
1717 struct gl_1d_map Map1Color4
;
1718 struct gl_1d_map Map1Normal
;
1719 struct gl_1d_map Map1Texture1
;
1720 struct gl_1d_map Map1Texture2
;
1721 struct gl_1d_map Map1Texture3
;
1722 struct gl_1d_map Map1Texture4
;
1723 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1730 struct gl_2d_map Map2Vertex3
;
1731 struct gl_2d_map Map2Vertex4
;
1732 struct gl_2d_map Map2Index
;
1733 struct gl_2d_map Map2Color4
;
1734 struct gl_2d_map Map2Normal
;
1735 struct gl_2d_map Map2Texture1
;
1736 struct gl_2d_map Map2Texture2
;
1737 struct gl_2d_map Map2Texture3
;
1738 struct gl_2d_map Map2Texture4
;
1739 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1745 * Names of the various vertex/fragment program register files, etc.
1747 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1748 * All values should fit in a 4-bit field.
1750 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1751 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1752 * be "uniform" variables since they can only be set outside glBegin/End.
1753 * They're also all stored in the same Parameters array.
1757 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1758 PROGRAM_INPUT
, /**< machine->Inputs[] */
1759 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1760 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1761 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1762 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1763 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1764 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1765 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1766 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1767 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1768 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1769 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1770 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1771 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1777 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1778 * one of these values.
1782 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1783 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1784 SYSTEM_VALUE_MAX
/**< Number of values */
1788 /** Vertex and fragment instructions */
1789 struct prog_instruction
;
1790 struct gl_program_parameter_list
;
1791 struct gl_uniform_list
;
1795 * Base class for any kind of program object
1800 GLubyte
*String
; /**< Null-terminated program text */
1802 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1803 GLenum Format
; /**< String encoding format */
1806 struct prog_instruction
*Instructions
;
1808 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1809 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1810 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1811 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1812 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1813 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1814 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1815 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1818 /** Named parameters, constants, etc. from program text */
1819 struct gl_program_parameter_list
*Parameters
;
1820 /** Numbered local parameters */
1821 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1823 /** Vertex/fragment shader varying vars */
1824 struct gl_program_parameter_list
*Varying
;
1825 /** Vertex program user-defined attributes */
1826 struct gl_program_parameter_list
*Attributes
;
1828 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1829 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1830 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1831 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1833 /** Bitmask of which register files are read/written with indirect
1834 * addressing. Mask of (1 << PROGRAM_x) bits.
1836 GLbitfield IndirectRegisterFiles
;
1838 /** Logical counts */
1840 GLuint NumInstructions
;
1841 GLuint NumTemporaries
;
1842 GLuint NumParameters
;
1843 GLuint NumAttributes
;
1844 GLuint NumAddressRegs
;
1845 GLuint NumAluInstructions
;
1846 GLuint NumTexInstructions
;
1847 GLuint NumTexIndirections
;
1849 /** Native, actual h/w counts */
1851 GLuint NumNativeInstructions
;
1852 GLuint NumNativeTemporaries
;
1853 GLuint NumNativeParameters
;
1854 GLuint NumNativeAttributes
;
1855 GLuint NumNativeAddressRegs
;
1856 GLuint NumNativeAluInstructions
;
1857 GLuint NumNativeTexInstructions
;
1858 GLuint NumNativeTexIndirections
;
1863 /** Vertex program object */
1864 struct gl_vertex_program
1866 struct gl_program Base
; /**< base class */
1867 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1868 GLboolean IsPositionInvariant
;
1872 /** Geometry program object */
1873 struct gl_geometry_program
1875 struct gl_program Base
; /**< base class */
1878 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1879 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1880 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1884 /** Fragment program object */
1885 struct gl_fragment_program
1887 struct gl_program Base
; /**< base class */
1889 GLboolean UsesKill
; /**< shader uses KIL instruction */
1890 GLboolean OriginUpperLeft
;
1891 GLboolean PixelCenterInteger
;
1896 * State common to vertex and fragment programs.
1898 struct gl_program_state
1900 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1901 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1906 * Context state for vertex programs.
1908 struct gl_vertex_program_state
1910 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1911 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1912 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1913 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1914 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1916 /** Currently enabled and valid vertex program (including internal
1917 * programs, user-defined vertex programs and GLSL vertex shaders).
1918 * This is the program we must use when rendering.
1920 struct gl_vertex_program
*_Current
;
1922 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1924 /* For GL_NV_vertex_program only: */
1925 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1926 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1928 /** Should fixed-function T&L be implemented with a vertex prog? */
1929 GLboolean _MaintainTnlProgram
;
1931 /** Program to emulate fixed-function T&L (see above) */
1932 struct gl_vertex_program
*_TnlProgram
;
1934 /** Cache of fixed-function programs */
1935 struct gl_program_cache
*Cache
;
1937 GLboolean _Overriden
;
1942 * Context state for geometry programs.
1944 struct gl_geometry_program_state
1946 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1947 GLboolean _Enabled
; /**< Enabled and valid program? */
1948 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1950 /** Currently enabled and valid program (including internal programs
1951 * and compiled shader programs).
1953 struct gl_geometry_program
*_Current
;
1955 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1957 /** Cache of fixed-function programs */
1958 struct gl_program_cache
*Cache
;
1962 * Context state for fragment programs.
1964 struct gl_fragment_program_state
1966 GLboolean Enabled
; /**< User-set fragment program enable flag */
1967 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1968 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1970 /** Currently enabled and valid fragment program (including internal
1971 * programs, user-defined fragment programs and GLSL fragment shaders).
1972 * This is the program we must use when rendering.
1974 struct gl_fragment_program
*_Current
;
1976 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1978 /** Should fixed-function texturing be implemented with a fragment prog? */
1979 GLboolean _MaintainTexEnvProgram
;
1981 /** Program to emulate fixed-function texture env/combine (see above) */
1982 struct gl_fragment_program
*_TexEnvProgram
;
1984 /** Cache of fixed-function programs */
1985 struct gl_program_cache
*Cache
;
1990 * ATI_fragment_shader runtime state
1992 #define ATI_FS_INPUT_PRIMARY 0
1993 #define ATI_FS_INPUT_SECONDARY 1
1995 struct atifs_instruction
;
1996 struct atifs_setupinst
;
1999 * ATI fragment shader
2001 struct ati_fragment_shader
2005 struct atifs_instruction
*Instructions
[2];
2006 struct atifs_setupinst
*SetupInst
[2];
2007 GLfloat Constants
[8][4];
2008 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2009 GLubyte numArithInstr
[2];
2010 GLubyte regsAssigned
[2];
2011 GLubyte NumPasses
; /**< 1 or 2 */
2013 GLubyte last_optype
;
2014 GLboolean interpinp1
;
2020 * Context state for GL_ATI_fragment_shader
2022 struct gl_ati_fragment_shader_state
2025 GLboolean _Enabled
; /**< enabled and valid shader? */
2026 GLboolean Compiling
;
2027 GLfloat GlobalConstants
[8][4];
2028 struct ati_fragment_shader
*Current
;
2033 * Occlusion/timer query object.
2035 struct gl_query_object
2037 GLenum Target
; /**< The query target, when active */
2038 GLuint Id
; /**< hash table ID/name */
2039 GLuint64EXT Result
; /**< the counter */
2040 GLboolean Active
; /**< inside Begin/EndQuery */
2041 GLboolean Ready
; /**< result is ready? */
2046 * Context state for query objects.
2048 struct gl_query_state
2050 struct _mesa_HashTable
*QueryObjects
;
2051 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2052 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2054 /** GL_NV_conditional_render */
2055 struct gl_query_object
*CondRenderQuery
;
2057 /** GL_EXT_transform_feedback */
2058 struct gl_query_object
*PrimitivesGenerated
;
2059 struct gl_query_object
*PrimitivesWritten
;
2061 /** GL_ARB_timer_query */
2062 struct gl_query_object
*TimeElapsed
;
2064 GLenum CondRenderMode
;
2068 /** Sync object state */
2069 struct gl_sync_object
{
2070 struct simple_node link
;
2071 GLenum Type
; /**< GL_SYNC_FENCE */
2072 GLuint Name
; /**< Fence name */
2073 GLint RefCount
; /**< Reference count */
2074 GLboolean DeletePending
; /**< Object was deleted while there were still
2075 * live references (e.g., sync not yet finished)
2077 GLenum SyncCondition
;
2078 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2079 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2083 /** Set by #pragma directives */
2084 struct gl_sl_pragmas
2086 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2087 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2088 GLboolean Optimize
; /**< defaults on */
2089 GLboolean Debug
; /**< defaults off */
2094 * A GLSL vertex or fragment shader object.
2098 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2099 GLuint Name
; /**< AKA the handle */
2100 GLint RefCount
; /**< Reference count */
2101 GLboolean DeletePending
;
2102 GLboolean CompileStatus
;
2103 GLboolean Main
; /**< shader defines main() */
2104 GLboolean UnresolvedRefs
;
2105 const GLchar
*Source
; /**< Source code string */
2106 GLuint SourceChecksum
; /**< for debug/logging purposes */
2107 struct gl_program
*Program
; /**< Post-compile assembly code */
2109 struct gl_sl_pragmas Pragmas
;
2111 unsigned Version
; /**< GLSL version used for linking */
2113 struct exec_list
*ir
;
2114 struct glsl_symbol_table
*symbols
;
2116 /** Shaders containing built-in functions that are used for linking. */
2117 struct gl_shader
*builtins_to_link
[16];
2118 unsigned num_builtins_to_link
;
2123 * A GLSL program object.
2124 * Basically a linked collection of vertex and fragment shaders.
2126 struct gl_shader_program
2128 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2129 GLuint Name
; /**< aka handle or ID */
2130 GLint RefCount
; /**< Reference count */
2131 GLboolean DeletePending
;
2133 GLuint NumShaders
; /**< number of attached shaders */
2134 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2136 /** User-defined attribute bindings (glBindAttribLocation) */
2137 struct gl_program_parameter_list
*Attributes
;
2139 /** Transform feedback varyings */
2143 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2144 } TransformFeedback
;
2146 /** Geometry shader state - copied into gl_geometry_program at link time */
2149 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2150 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2151 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2154 /* post-link info: */
2155 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2156 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2157 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2158 struct gl_uniform_list
*Uniforms
;
2159 struct gl_program_parameter_list
*Varying
;
2160 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2161 GLboolean Validated
;
2162 GLboolean _Used
; /**< Ever used for drawing? */
2165 unsigned Version
; /**< GLSL version used for linking */
2168 * Per-stage shaders resulting from the first stage of linking.
2170 * Set of linked shaders for this program. The array is accessed using the
2171 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2174 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2178 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2179 #define GLSL_LOG 0x2 /**< Write shaders to files */
2180 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2181 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2182 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2183 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2184 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2185 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2189 * Context state for GLSL vertex/fragment shaders.
2191 struct gl_shader_state
2194 * Programs used for rendering
2196 * There is a separate program set for each shader stage. If
2197 * GL_EXT_separate_shader_objects is not supported, each of these must point
2198 * to \c NULL or to the same program.
2200 struct gl_shader_program
*CurrentVertexProgram
;
2201 struct gl_shader_program
*CurrentGeometryProgram
;
2202 struct gl_shader_program
*CurrentFragmentProgram
;
2205 * Program used by glUniform calls.
2207 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2209 struct gl_shader_program
*ActiveProgram
;
2213 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2217 * Compiler options for a single GLSL shaders type
2219 struct gl_shader_compiler_options
2221 /** Driver-selectable options: */
2222 GLboolean EmitCondCodes
; /**< Use condition codes? */
2223 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2225 * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't
2226 * support control flow.
2228 GLboolean EmitNoIfs
;
2229 GLboolean EmitNoLoops
;
2230 GLboolean EmitNoFunctions
;
2231 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2232 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2233 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2234 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2237 * \name Forms of indirect addressing the driver cannot do.
2240 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2241 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2242 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2243 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2246 GLuint MaxUnrollIterations
;
2248 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2252 * Transform feedback object state
2254 struct gl_transform_feedback_object
2256 GLuint Name
; /**< AKA the object ID */
2258 GLboolean Active
; /**< Is transform feedback enabled? */
2259 GLboolean Paused
; /**< Is transform feedback paused? */
2261 /** The feedback buffers */
2262 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2263 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2265 /** Start of feedback data in dest buffer */
2266 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2267 /** Max data to put into dest buffer (in bytes) */
2268 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2273 * Context state for transform feedback.
2275 struct gl_transform_feedback
2277 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2279 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2281 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2282 struct gl_buffer_object
*CurrentBuffer
;
2284 /** The table of all transform feedback objects */
2285 struct _mesa_HashTable
*Objects
;
2287 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2288 struct gl_transform_feedback_object
*CurrentObject
;
2290 /** The default xform-fb object (Name==0) */
2291 struct gl_transform_feedback_object
*DefaultObject
;
2297 * State which can be shared by multiple contexts:
2299 struct gl_shared_state
2301 _glthread_Mutex Mutex
; /**< for thread safety */
2302 GLint RefCount
; /**< Reference count */
2303 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2304 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2306 /** Default texture objects (shared by all texture units) */
2307 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2309 /** Fallback texture used when a bound texture is incomplete */
2310 struct gl_texture_object
*FallbackTex
;
2313 * \name Thread safety and statechange notification for texture
2316 * \todo Improve the granularity of locking.
2319 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2320 GLuint TextureStateStamp
; /**< state notification for shared tex */
2323 /** Default buffer object for vertex arrays that aren't in VBOs */
2324 struct gl_buffer_object
*NullBufferObj
;
2327 * \name Vertex/geometry/fragment programs
2330 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2331 struct gl_vertex_program
*DefaultVertexProgram
;
2332 struct gl_fragment_program
*DefaultFragmentProgram
;
2333 struct gl_geometry_program
*DefaultGeometryProgram
;
2336 /* GL_ATI_fragment_shader */
2337 struct _mesa_HashTable
*ATIShaders
;
2338 struct ati_fragment_shader
*DefaultFragmentShader
;
2340 struct _mesa_HashTable
*BufferObjects
;
2342 /** Table of both gl_shader and gl_shader_program objects */
2343 struct _mesa_HashTable
*ShaderObjects
;
2345 /* GL_EXT_framebuffer_object */
2346 struct _mesa_HashTable
*RenderBuffers
;
2347 struct _mesa_HashTable
*FrameBuffers
;
2350 struct simple_node SyncObjects
;
2352 void *DriverData
; /**< Device driver shared state */
2359 * A renderbuffer stores colors or depth values or stencil values.
2360 * A framebuffer object will have a collection of these.
2361 * Data are read/written to the buffer with a handful of Get/Put functions.
2363 * Instances of this object are allocated with the Driver's NewRenderbuffer
2364 * hook. Drivers will likely wrap this class inside a driver-specific
2365 * class to simulate inheritance.
2367 struct gl_renderbuffer
2369 #define RB_MAGIC 0xaabbccdd
2370 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2371 _glthread_Mutex Mutex
; /**< for thread safety */
2372 GLuint ClassID
; /**< Useful for drivers */
2375 GLuint Width
, Height
;
2376 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2378 GLenum InternalFormat
; /**< The user-specified format */
2379 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2380 GL_STENCIL_INDEX. */
2381 GLuint Format
; /**< The actual format: MESA_FORMAT_x */
2385 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2386 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2388 /* Used to wrap one renderbuffer around another: */
2389 struct gl_renderbuffer
*Wrapped
;
2391 /* Delete this renderbuffer */
2392 void (*Delete
)(struct gl_renderbuffer
*rb
);
2394 /* Allocate new storage for this renderbuffer */
2395 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2396 GLenum internalFormat
,
2397 GLuint width
, GLuint height
);
2399 /* Lock/Unlock are called before/after calling the Get/Put functions.
2400 * Not sure this is the right place for these yet.
2401 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2402 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2405 /* Return a pointer to the element/pixel at (x,y).
2406 * Should return NULL if the buffer memory can't be directly addressed.
2408 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2411 /* Get/Read a row of values.
2412 * The values will be of format _BaseFormat and type DataType.
2414 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2415 GLint x
, GLint y
, void *values
);
2417 /* Get/Read values at arbitrary locations.
2418 * The values will be of format _BaseFormat and type DataType.
2420 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2421 const GLint x
[], const GLint y
[], void *values
);
2423 /* Put/Write a row of values.
2424 * The values will be of format _BaseFormat and type DataType.
2426 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2427 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2429 /* Put/Write a row of RGB values. This is a special-case routine that's
2430 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2431 * a common case for glDrawPixels and some triangle routines.
2432 * The values will be of format GL_RGB and type DataType.
2434 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2435 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2438 /* Put/Write a row of identical values.
2439 * The values will be of format _BaseFormat and type DataType.
2441 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2442 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2444 /* Put/Write values at arbitrary locations.
2445 * The values will be of format _BaseFormat and type DataType.
2447 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2448 const GLint x
[], const GLint y
[], const void *values
,
2449 const GLubyte
*mask
);
2450 /* Put/Write identical values at arbitrary locations.
2451 * The values will be of format _BaseFormat and type DataType.
2453 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2454 GLuint count
, const GLint x
[], const GLint y
[],
2455 const void *value
, const GLubyte
*mask
);
2460 * A renderbuffer attachment points to either a texture object (and specifies
2461 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2463 struct gl_renderbuffer_attachment
2465 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2469 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2470 * application supplied renderbuffer object.
2472 struct gl_renderbuffer
*Renderbuffer
;
2475 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2476 * supplied texture object.
2478 struct gl_texture_object
*Texture
;
2479 GLuint TextureLevel
; /**< Attached mipmap level. */
2480 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2481 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2482 * and 2D array textures */
2487 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2488 * In C++ terms, think of this as a base class from which device drivers
2489 * will make derived classes.
2491 struct gl_framebuffer
2493 _glthread_Mutex Mutex
; /**< for thread safety */
2495 * If zero, this is a window system framebuffer. If non-zero, this
2496 * is a FBO framebuffer; note that for some devices (i.e. those with
2497 * a natural pixel coordinate system for FBOs that differs from the
2498 * OpenGL/Mesa coordinate system), this means that the viewport,
2499 * polygon face orientation, and polygon stipple will have to be inverted.
2504 GLboolean DeletePending
;
2507 * The framebuffer's visual. Immutable if this is a window system buffer.
2508 * Computed from attachments if user-made FBO.
2510 struct gl_config Visual
;
2512 GLboolean Initialized
;
2514 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2516 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2518 GLint _Xmin
, _Xmax
; /**< inclusive */
2519 GLint _Ymin
, _Ymax
; /**< exclusive */
2522 /** \name Derived Z buffer stuff */
2524 GLuint _DepthMax
; /**< Max depth buffer value */
2525 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2526 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2529 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2532 /** Integer color values */
2533 GLboolean _IntegerColor
;
2535 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2536 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2538 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2539 * attribute group and GL_PIXEL attribute group, respectively.
2541 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2542 GLenum ColorReadBuffer
;
2544 /** Computed from ColorDraw/ReadBuffer above */
2545 GLuint _NumColorDrawBuffers
;
2546 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2547 GLint _ColorReadBufferIndex
; /* -1 = None */
2548 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2549 struct gl_renderbuffer
*_ColorReadBuffer
;
2551 /** The Actual depth/stencil buffers to use. May be wrappers around the
2552 * depth/stencil buffers attached above. */
2553 struct gl_renderbuffer
*_DepthBuffer
;
2554 struct gl_renderbuffer
*_StencilBuffer
;
2556 /** Delete this framebuffer */
2557 void (*Delete
)(struct gl_framebuffer
*fb
);
2562 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2566 GLushort RangeMin
; /**< min value exponent */
2567 GLushort RangeMax
; /**< max value exponent */
2568 GLushort Precision
; /**< number of mantissa bits */
2573 * Limits for vertex and fragment programs/shaders.
2575 struct gl_program_constants
2577 /* logical limits */
2578 GLuint MaxInstructions
;
2579 GLuint MaxAluInstructions
;
2580 GLuint MaxTexInstructions
;
2581 GLuint MaxTexIndirections
;
2584 GLuint MaxAddressRegs
;
2585 GLuint MaxParameters
;
2586 GLuint MaxLocalParams
;
2587 GLuint MaxEnvParams
;
2588 /* native/hardware limits */
2589 GLuint MaxNativeInstructions
;
2590 GLuint MaxNativeAluInstructions
;
2591 GLuint MaxNativeTexInstructions
;
2592 GLuint MaxNativeTexIndirections
;
2593 GLuint MaxNativeAttribs
;
2594 GLuint MaxNativeTemps
;
2595 GLuint MaxNativeAddressRegs
;
2596 GLuint MaxNativeParameters
;
2598 GLuint MaxUniformComponents
;
2599 /* GL_ARB_geometry_shader4 */
2600 GLuint MaxGeometryTextureImageUnits
;
2601 GLuint MaxGeometryVaryingComponents
;
2602 GLuint MaxVertexVaryingComponents
;
2603 GLuint MaxGeometryUniformComponents
;
2604 GLuint MaxGeometryOutputVertices
;
2605 GLuint MaxGeometryTotalOutputComponents
;
2606 /* ES 2.0 and GL_ARB_ES2_compatibility */
2607 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2608 struct gl_precision LowInt
, MediumInt
, HighInt
;
2613 * Constants which may be overridden by device driver during context creation
2614 * but are never changed after that.
2618 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2619 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2620 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2621 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2622 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2623 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2624 GLuint MaxTextureCoordUnits
;
2625 GLuint MaxTextureImageUnits
;
2626 GLuint MaxVertexTextureImageUnits
;
2627 GLuint MaxCombinedTextureImageUnits
;
2628 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2629 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2630 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2632 GLuint MaxArrayLockSize
;
2636 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2637 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2638 GLfloat PointSizeGranularity
;
2639 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2640 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2641 GLfloat LineWidthGranularity
;
2643 GLuint MaxColorTableSize
;
2645 GLuint MaxClipPlanes
;
2647 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2648 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2650 GLuint MaxViewportWidth
, MaxViewportHeight
;
2652 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2653 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2654 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2655 GLuint MaxProgramMatrices
;
2656 GLuint MaxProgramMatrixStackDepth
;
2658 /** vertex array / buffer object bounds checking */
2659 GLboolean CheckArrayBounds
;
2661 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2663 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2664 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2665 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2667 GLuint MaxVarying
; /**< Number of float[4] varying parameters */
2669 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2671 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2672 GLbitfield SupportedBumpUnits
;
2675 * Maximum amount of time, measured in nanseconds, that the server can wait.
2677 GLuint64 MaxServerWaitTimeout
;
2679 /** GL_EXT_provoking_vertex */
2680 GLboolean QuadsFollowProvokingVertexConvention
;
2682 /** OpenGL version 3.0 */
2683 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2685 /** OpenGL version 3.2 */
2686 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2688 /** GL_EXT_transform_feedback */
2689 GLuint MaxTransformFeedbackSeparateAttribs
;
2690 GLuint MaxTransformFeedbackSeparateComponents
;
2691 GLuint MaxTransformFeedbackInterleavedComponents
;
2693 /** GL_EXT_gpu_shader4 */
2694 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2699 * Enable flag for each OpenGL extension. Different device drivers will
2700 * enable different extensions at runtime.
2702 struct gl_extensions
2704 GLboolean dummy
; /* don't remove this! */
2705 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2706 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2707 GLboolean ARB_ES2_compatibility
;
2708 GLboolean ARB_blend_func_extended
;
2709 GLboolean ARB_copy_buffer
;
2710 GLboolean ARB_depth_buffer_float
;
2711 GLboolean ARB_depth_clamp
;
2712 GLboolean ARB_depth_texture
;
2713 GLboolean ARB_draw_buffers
;
2714 GLboolean ARB_draw_buffers_blend
;
2715 GLboolean ARB_draw_elements_base_vertex
;
2716 GLboolean ARB_draw_instanced
;
2717 GLboolean ARB_fragment_coord_conventions
;
2718 GLboolean ARB_fragment_program
;
2719 GLboolean ARB_fragment_program_shadow
;
2720 GLboolean ARB_fragment_shader
;
2721 GLboolean ARB_framebuffer_object
;
2722 GLboolean ARB_explicit_attrib_location
;
2723 GLboolean ARB_geometry_shader4
;
2724 GLboolean ARB_half_float_pixel
;
2725 GLboolean ARB_half_float_vertex
;
2726 GLboolean ARB_instanced_arrays
;
2727 GLboolean ARB_map_buffer_range
;
2728 GLboolean ARB_multisample
;
2729 GLboolean ARB_multitexture
;
2730 GLboolean ARB_occlusion_query
;
2731 GLboolean ARB_occlusion_query2
;
2732 GLboolean ARB_point_sprite
;
2733 GLboolean ARB_sampler_objects
;
2734 GLboolean ARB_seamless_cube_map
;
2735 GLboolean ARB_shader_objects
;
2736 GLboolean ARB_shader_stencil_export
;
2737 GLboolean ARB_shading_language_100
;
2738 GLboolean ARB_shadow
;
2739 GLboolean ARB_shadow_ambient
;
2741 GLboolean ARB_texture_border_clamp
;
2742 GLboolean ARB_texture_buffer_object
;
2743 GLboolean ARB_texture_compression
;
2744 GLboolean ARB_texture_compression_rgtc
;
2745 GLboolean ARB_texture_cube_map
;
2746 GLboolean ARB_texture_env_combine
;
2747 GLboolean ARB_texture_env_crossbar
;
2748 GLboolean ARB_texture_env_dot3
;
2749 GLboolean ARB_texture_float
;
2750 GLboolean ARB_texture_mirrored_repeat
;
2751 GLboolean ARB_texture_multisample
;
2752 GLboolean ARB_texture_non_power_of_two
;
2753 GLboolean ARB_texture_rg
;
2754 GLboolean ARB_texture_rgb10_a2ui
;
2755 GLboolean ARB_timer_query
;
2756 GLboolean ARB_transform_feedback2
;
2757 GLboolean ARB_transpose_matrix
;
2758 GLboolean ARB_uniform_buffer_object
;
2759 GLboolean ARB_vertex_array_object
;
2760 GLboolean ARB_vertex_buffer_object
;
2761 GLboolean ARB_vertex_program
;
2762 GLboolean ARB_vertex_shader
;
2763 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2764 GLboolean ARB_window_pos
;
2767 GLboolean EXT_blend_color
;
2768 GLboolean EXT_blend_equation_separate
;
2769 GLboolean EXT_blend_func_separate
;
2770 GLboolean EXT_blend_logic_op
;
2771 GLboolean EXT_blend_minmax
;
2772 GLboolean EXT_blend_subtract
;
2773 GLboolean EXT_clip_volume_hint
;
2774 GLboolean EXT_compiled_vertex_array
;
2775 GLboolean EXT_copy_texture
;
2776 GLboolean EXT_depth_bounds_test
;
2777 GLboolean EXT_draw_buffers2
;
2778 GLboolean EXT_draw_range_elements
;
2779 GLboolean EXT_fog_coord
;
2780 GLboolean EXT_framebuffer_blit
;
2781 GLboolean EXT_framebuffer_multisample
;
2782 GLboolean EXT_framebuffer_object
;
2783 GLboolean EXT_framebuffer_sRGB
;
2784 GLboolean EXT_gpu_program_parameters
;
2785 GLboolean EXT_gpu_shader4
;
2786 GLboolean EXT_multi_draw_arrays
;
2787 GLboolean EXT_paletted_texture
;
2788 GLboolean EXT_packed_depth_stencil
;
2789 GLboolean EXT_packed_float
;
2790 GLboolean EXT_packed_pixels
;
2791 GLboolean EXT_pixel_buffer_object
;
2792 GLboolean EXT_point_parameters
;
2793 GLboolean EXT_polygon_offset
;
2794 GLboolean EXT_provoking_vertex
;
2795 GLboolean EXT_rescale_normal
;
2796 GLboolean EXT_shadow_funcs
;
2797 GLboolean EXT_secondary_color
;
2798 GLboolean EXT_separate_shader_objects
;
2799 GLboolean EXT_separate_specular_color
;
2800 GLboolean EXT_shared_texture_palette
;
2801 GLboolean EXT_stencil_wrap
;
2802 GLboolean EXT_stencil_two_side
;
2803 GLboolean EXT_subtexture
;
2804 GLboolean EXT_texture
;
2805 GLboolean EXT_texture_object
;
2806 GLboolean EXT_texture3D
;
2807 GLboolean EXT_texture_array
;
2808 GLboolean EXT_texture_compression_s3tc
;
2809 GLboolean EXT_texture_env_add
;
2810 GLboolean EXT_texture_env_combine
;
2811 GLboolean EXT_texture_env_dot3
;
2812 GLboolean EXT_texture_filter_anisotropic
;
2813 GLboolean EXT_texture_integer
;
2814 GLboolean EXT_texture_lod_bias
;
2815 GLboolean EXT_texture_mirror_clamp
;
2816 GLboolean EXT_texture_shared_exponent
;
2817 GLboolean EXT_texture_sRGB
;
2818 GLboolean EXT_texture_sRGB_decode
;
2819 GLboolean EXT_texture_swizzle
;
2820 GLboolean EXT_transform_feedback
;
2821 GLboolean EXT_timer_query
;
2822 GLboolean EXT_vertex_array
;
2823 GLboolean EXT_vertex_array_bgra
;
2824 GLboolean EXT_vertex_array_set
;
2825 GLboolean OES_standard_derivatives
;
2826 /* vendor extensions */
2827 GLboolean APPLE_client_storage
;
2828 GLboolean APPLE_packed_pixels
;
2829 GLboolean APPLE_vertex_array_object
;
2830 GLboolean APPLE_object_purgeable
;
2831 GLboolean ATI_envmap_bumpmap
;
2832 GLboolean ATI_texture_mirror_once
;
2833 GLboolean ATI_texture_env_combine3
;
2834 GLboolean ATI_fragment_shader
;
2835 GLboolean ATI_separate_stencil
;
2836 GLboolean IBM_rasterpos_clip
;
2837 GLboolean IBM_multimode_draw_arrays
;
2838 GLboolean MESA_pack_invert
;
2839 GLboolean MESA_resize_buffers
;
2840 GLboolean MESA_ycbcr_texture
;
2841 GLboolean MESA_texture_array
;
2842 GLboolean MESA_texture_signed_rgba
;
2843 GLboolean NV_blend_square
;
2844 GLboolean NV_conditional_render
;
2845 GLboolean NV_fragment_program
;
2846 GLboolean NV_fragment_program_option
;
2847 GLboolean NV_light_max_exponent
;
2848 GLboolean NV_point_sprite
;
2849 GLboolean NV_primitive_restart
;
2850 GLboolean NV_texgen_reflection
;
2851 GLboolean NV_texture_env_combine4
;
2852 GLboolean NV_texture_rectangle
;
2853 GLboolean NV_vertex_program
;
2854 GLboolean NV_vertex_program1_1
;
2855 GLboolean OES_read_format
;
2856 GLboolean SGI_texture_color_table
;
2857 GLboolean SGIS_generate_mipmap
;
2858 GLboolean SGIS_texture_edge_clamp
;
2859 GLboolean SGIS_texture_lod
;
2860 GLboolean TDFX_texture_compression_FXT1
;
2862 GLboolean OES_EGL_image
;
2863 GLboolean OES_draw_texture
;
2864 GLboolean EXT_texture_format_BGRA8888
;
2865 GLboolean extension_sentinel
;
2866 /** The extension string */
2867 const GLubyte
*String
;
2868 /** Number of supported extensions */
2874 * A stack of matrices (projection, modelview, color, texture, etc).
2876 struct gl_matrix_stack
2878 GLmatrix
*Top
; /**< points into Stack */
2879 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2880 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2881 GLuint MaxDepth
; /**< size of Stack[] array */
2882 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2887 * \name Bits for image transfer operations
2888 * \sa __struct gl_contextRec::ImageTransferState.
2891 #define IMAGE_SCALE_BIAS_BIT 0x1
2892 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2893 #define IMAGE_MAP_COLOR_BIT 0x4
2894 #define IMAGE_CLAMP_BIT 0x800
2897 /** Pixel Transfer ops */
2898 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2899 IMAGE_SHIFT_OFFSET_BIT | \
2900 IMAGE_MAP_COLOR_BIT)
2903 * \name Bits to indicate what state has changed.
2908 #define _NEW_MODELVIEW 0x1 /**< __struct gl_contextRec::ModelView */
2909 #define _NEW_PROJECTION 0x2 /**< __struct gl_contextRec::Projection */
2910 #define _NEW_TEXTURE_MATRIX 0x4 /**< __struct gl_contextRec::TextureMatrix */
2911 #define _NEW_ACCUM 0x10 /**< __struct gl_contextRec::Accum */
2912 #define _NEW_COLOR 0x20 /**< __struct gl_contextRec::Color */
2913 #define _NEW_DEPTH 0x40 /**< __struct gl_contextRec::Depth */
2914 #define _NEW_EVAL 0x80 /**< __struct gl_contextRec::Eval, __struct gl_contextRec::EvalMap */
2915 #define _NEW_FOG 0x100 /**< __struct gl_contextRec::Fog */
2916 #define _NEW_HINT 0x200 /**< __struct gl_contextRec::Hint */
2917 #define _NEW_LIGHT 0x400 /**< __struct gl_contextRec::Light */
2918 #define _NEW_LINE 0x800 /**< __struct gl_contextRec::Line */
2919 #define _NEW_PIXEL 0x1000 /**< __struct gl_contextRec::Pixel */
2920 #define _NEW_POINT 0x2000 /**< __struct gl_contextRec::Point */
2921 #define _NEW_POLYGON 0x4000 /**< __struct gl_contextRec::Polygon */
2922 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __struct gl_contextRec::PolygonStipple */
2923 #define _NEW_SCISSOR 0x10000 /**< __struct gl_contextRec::Scissor */
2924 #define _NEW_STENCIL 0x20000 /**< __struct gl_contextRec::Stencil */
2925 #define _NEW_TEXTURE 0x40000 /**< __struct gl_contextRec::Texture */
2926 #define _NEW_TRANSFORM 0x80000 /**< __struct gl_contextRec::Transform */
2927 #define _NEW_VIEWPORT 0x100000 /**< __struct gl_contextRec::Viewport */
2928 #define _NEW_PACKUNPACK 0x200000 /**< __struct gl_contextRec::Pack, __struct gl_contextRec::Unpack */
2929 #define _NEW_ARRAY 0x400000 /**< __struct gl_contextRec::Array */
2930 #define _NEW_RENDERMODE 0x800000 /**< __struct gl_contextRec::RenderMode, __struct gl_contextRec::Feedback, __struct gl_contextRec::Select */
2931 #define _NEW_BUFFERS 0x1000000 /**< __struct gl_contextRec::Visual, __struct gl_contextRec::DrawBuffer, */
2932 #define _NEW_MULTISAMPLE 0x2000000 /**< __struct gl_contextRec::Multisample */
2933 #define _NEW_TRACK_MATRIX 0x4000000 /**< __struct gl_contextRec::VertexProgram */
2934 #define _NEW_PROGRAM 0x8000000 /**< __struct gl_contextRec::VertexProgram */
2935 #define _NEW_CURRENT_ATTRIB 0x10000000 /**< __struct gl_contextRec::Current */
2936 #define _NEW_PROGRAM_CONSTANTS 0x20000000
2937 #define _NEW_BUFFER_OBJECT 0x40000000
2943 * \name Bits to track array state changes
2945 * Also used to summarize array enabled.
2948 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2949 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2950 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2951 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2952 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2953 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2954 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2955 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2956 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2957 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2958 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2959 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2960 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2961 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2962 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2963 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2964 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2965 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2966 #define _NEW_ARRAY_ALL 0xffffffff
2969 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2970 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2976 * \name A bunch of flags that we think might be useful to drivers.
2978 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
2981 #define DD_FLATSHADE 0x1
2982 #define DD_SEPARATE_SPECULAR 0x2
2983 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2984 #define DD_TRI_LIGHT_TWOSIDE 0x8
2985 #define DD_TRI_UNFILLED 0x10
2986 #define DD_TRI_SMOOTH 0x20
2987 #define DD_TRI_STIPPLE 0x40
2988 #define DD_TRI_OFFSET 0x80
2989 #define DD_LINE_SMOOTH 0x100
2990 #define DD_LINE_STIPPLE 0x200
2991 #define DD_POINT_SMOOTH 0x400
2992 #define DD_POINT_ATTEN 0x800
2993 #define DD_TRI_TWOSTENCIL 0x1000
2998 * \name Define the state changes under which each of these bits might change
3001 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3002 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3003 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3004 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3005 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3006 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3007 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3008 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3009 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3010 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3011 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3012 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3013 #define _DD_NEW_POINT_SIZE _NEW_POINT
3014 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3019 * Composite state flags
3022 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3028 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
3031 #define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL)
3037 /* This has to be included here. */
3042 * Display list flags.
3043 * Strictly this is a tnl-private concept, but it doesn't seem
3044 * worthwhile adding a tnl private structure just to hold this one bit
3047 #define DLIST_DANGLING_REFS 0x1
3050 /** Opaque declaration of display list payload data type */
3051 union gl_dlist_node
;
3055 * Provide a location where information about a display list can be
3056 * collected. Could be extended with driverPrivate structures,
3057 * etc. in the future.
3059 struct gl_display_list
3062 GLbitfield Flags
; /**< DLIST_x flags */
3063 /** The dlist commands are in a linked list of nodes */
3064 union gl_dlist_node
*Head
;
3069 * State used during display list compilation and execution.
3071 struct gl_dlist_state
3073 GLuint CallDepth
; /**< Current recursion calling depth */
3075 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3076 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3077 GLuint CurrentPos
; /**< Index into current block of nodes */
3079 GLvertexformat ListVtxfmt
;
3081 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3082 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3084 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3085 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3087 GLubyte ActiveIndex
;
3088 GLfloat CurrentIndex
;
3090 GLubyte ActiveEdgeFlag
;
3091 GLboolean CurrentEdgeFlag
;
3094 /* State known to have been set by the currently-compiling display
3095 * list. Used to eliminate some redundant state changes.
3103 * Enum for the OpenGL APIs we know about and may support.
3114 * Mesa rendering context.
3116 * This is the central context data structure for Mesa. Almost all
3117 * OpenGL state is contained in this structure.
3118 * Think of this as a base class from which device drivers will derive
3121 * The struct gl_context typedef names this structure.
3125 /** State possibly shared with other contexts in the address space */
3126 struct gl_shared_state
*Shared
;
3128 /** \name API function pointer tables */
3131 struct _glapi_table
*Save
; /**< Display list save functions */
3132 struct _glapi_table
*Exec
; /**< Execute functions */
3133 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3136 struct gl_config Visual
;
3137 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3138 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3139 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3140 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3143 * Device driver function pointer table
3145 struct dd_function_table Driver
;
3147 void *DriverCtx
; /**< Points to device driver context/state */
3149 /** Core/Driver constants */
3150 struct gl_constants Const
;
3152 /** \name The various 4x4 matrix stacks */
3154 struct gl_matrix_stack ModelviewMatrixStack
;
3155 struct gl_matrix_stack ProjectionMatrixStack
;
3156 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3157 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3158 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3161 /** Combined modelview and projection matrix */
3162 GLmatrix _ModelProjectMatrix
;
3164 /** \name Display lists */
3165 struct gl_dlist_state ListState
;
3167 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3168 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3170 /** Extension information */
3171 struct gl_extensions Extensions
;
3174 GLuint VersionMajor
, VersionMinor
;
3175 char *VersionString
;
3177 /** \name State attribute stack (for glPush/PopAttrib) */
3179 GLuint AttribStackDepth
;
3180 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3183 /** \name Renderer attribute groups
3185 * We define a struct for each attribute group to make pushing and popping
3186 * attributes easy. Also it's a good organization.
3189 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3190 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3191 struct gl_current_attrib Current
; /**< Current attributes */
3192 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3193 struct gl_eval_attrib Eval
; /**< Eval attributes */
3194 struct gl_fog_attrib Fog
; /**< Fog attributes */
3195 struct gl_hint_attrib Hint
; /**< Hint attributes */
3196 struct gl_light_attrib Light
; /**< Light attributes */
3197 struct gl_line_attrib Line
; /**< Line attributes */
3198 struct gl_list_attrib List
; /**< List attributes */
3199 struct gl_multisample_attrib Multisample
;
3200 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3201 struct gl_point_attrib Point
; /**< Point attributes */
3202 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3203 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3204 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3205 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3206 struct gl_texture_attrib Texture
; /**< Texture attributes */
3207 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3208 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3211 /** \name Client attribute stack */
3213 GLuint ClientAttribStackDepth
;
3214 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3217 /** \name Client attribute groups */
3219 struct gl_array_attrib Array
; /**< Vertex arrays */
3220 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3221 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3222 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3225 /** \name Other assorted state (not pushed/popped on attribute stack) */
3227 struct gl_pixelmaps PixelMaps
;
3229 struct gl_evaluators EvalMap
; /**< All evaluators */
3230 struct gl_feedback Feedback
; /**< Feedback */
3231 struct gl_selection Select
; /**< Selection */
3233 struct gl_program_state Program
; /**< general program state */
3234 struct gl_vertex_program_state VertexProgram
;
3235 struct gl_fragment_program_state FragmentProgram
;
3236 struct gl_geometry_program_state GeometryProgram
;
3237 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3239 struct gl_shader_state Shader
; /**< GLSL shader object state */
3240 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3242 struct gl_query_state Query
; /**< occlusion, timer queries */
3244 struct gl_transform_feedback TransformFeedback
;
3246 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3247 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3250 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3252 /* GL_EXT_framebuffer_object */
3253 struct gl_renderbuffer
*CurrentRenderbuffer
;
3255 GLenum ErrorValue
; /**< Last error code */
3258 * Recognize and silence repeated error debug messages in buggy apps.
3260 const char *ErrorDebugFmtString
;
3261 GLuint ErrorDebugCount
;
3263 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3264 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3266 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3268 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3270 /** \name Derived state */
3272 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3273 * state validation so they need to always be current.
3275 GLbitfield _TriangleCaps
;
3276 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3277 GLfloat _EyeZDir
[3];
3278 GLfloat _ModelViewInvScale
;
3279 GLboolean _NeedEyeCoords
;
3280 GLboolean _ForceEyeCoords
;
3282 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3284 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3285 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3288 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3290 /** \name For debugging/development only */
3292 GLboolean FirstTimeCurrent
;
3295 /** Dither disable via MESA_NO_DITHER env var */
3298 /** software compression/decompression supported or not */
3299 GLboolean Mesa_DXTn
;
3301 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3304 * Use dp4 (rather than mul/mad) instructions for position
3307 GLboolean mvp_with_dp4
;
3310 * \name Hooks for module contexts.
3312 * These will eventually live in the driver or elsewhere.
3315 void *swrast_context
;
3316 void *swsetup_context
;
3317 void *swtnl_context
;
3319 struct st_context
*st
;
3326 extern int MESA_VERBOSE
;
3327 extern int MESA_DEBUG_FLAGS
;
3328 # define MESA_FUNCTION __FUNCTION__
3330 # define MESA_VERBOSE 0
3331 # define MESA_DEBUG_FLAGS 0
3332 # define MESA_FUNCTION "a function"
3339 /** The MESA_VERBOSE var is a bitmask of these flags */
3342 VERBOSE_VARRAY
= 0x0001,
3343 VERBOSE_TEXTURE
= 0x0002,
3344 VERBOSE_MATERIAL
= 0x0004,
3345 VERBOSE_PIPELINE
= 0x0008,
3346 VERBOSE_DRIVER
= 0x0010,
3347 VERBOSE_STATE
= 0x0020,
3348 VERBOSE_API
= 0x0040,
3349 VERBOSE_DISPLAY_LIST
= 0x0100,
3350 VERBOSE_LIGHTING
= 0x0200,
3351 VERBOSE_PRIMS
= 0x0400,
3352 VERBOSE_VERTS
= 0x0800,
3353 VERBOSE_DISASSEM
= 0x1000,
3354 VERBOSE_DRAW
= 0x2000,
3355 VERBOSE_SWAPBUFFERS
= 0x4000
3359 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3362 DEBUG_ALWAYS_FLUSH
= 0x1
3367 #endif /* MTYPES_H */