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 * Stencil buffer data type.
50 typedef GLubyte GLstencil
;
51 #elif STENCIL_BITS==16
52 typedef GLushort GLstencil
;
54 # error "illegal number of stencil bits"
59 * \name 64-bit extension of GLbitfield.
62 typedef GLuint64 GLbitfield64
;
64 /** Set a single bit */
65 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
69 * \name Some forward type declarations
72 struct _mesa_HashTable
;
73 struct gl_attrib_node
;
74 struct gl_list_extensions
;
76 struct gl_program_cache
;
77 struct gl_texture_object
;
83 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
84 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
85 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
86 #define PRIM_UNKNOWN (GL_POLYGON+3)
90 * Shader stages. Note that these will become 5 with tessellation.
91 * These MUST have the same values as gallium's PIPE_SHADER_*
95 MESA_SHADER_VERTEX
= 0,
96 MESA_SHADER_FRAGMENT
= 1,
97 MESA_SHADER_GEOMETRY
= 2,
104 * Indexes for vertex program attributes.
105 * GL_NV_vertex_program aliases generic attributes over the conventional
106 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
107 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
108 * generic attributes are distinct/separate).
113 VERT_ATTRIB_WEIGHT
= 1,
114 VERT_ATTRIB_NORMAL
= 2,
115 VERT_ATTRIB_COLOR0
= 3,
116 VERT_ATTRIB_COLOR1
= 4,
118 VERT_ATTRIB_COLOR_INDEX
= 6,
119 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
120 VERT_ATTRIB_EDGEFLAG
= 7,
121 VERT_ATTRIB_TEX0
= 8,
122 VERT_ATTRIB_TEX1
= 9,
123 VERT_ATTRIB_TEX2
= 10,
124 VERT_ATTRIB_TEX3
= 11,
125 VERT_ATTRIB_TEX4
= 12,
126 VERT_ATTRIB_TEX5
= 13,
127 VERT_ATTRIB_TEX6
= 14,
128 VERT_ATTRIB_TEX7
= 15,
129 VERT_ATTRIB_GENERIC0
= 16,
130 VERT_ATTRIB_GENERIC1
= 17,
131 VERT_ATTRIB_GENERIC2
= 18,
132 VERT_ATTRIB_GENERIC3
= 19,
133 VERT_ATTRIB_GENERIC4
= 20,
134 VERT_ATTRIB_GENERIC5
= 21,
135 VERT_ATTRIB_GENERIC6
= 22,
136 VERT_ATTRIB_GENERIC7
= 23,
137 VERT_ATTRIB_GENERIC8
= 24,
138 VERT_ATTRIB_GENERIC9
= 25,
139 VERT_ATTRIB_GENERIC10
= 26,
140 VERT_ATTRIB_GENERIC11
= 27,
141 VERT_ATTRIB_GENERIC12
= 28,
142 VERT_ATTRIB_GENERIC13
= 29,
143 VERT_ATTRIB_GENERIC14
= 30,
144 VERT_ATTRIB_GENERIC15
= 31,
149 * Bitflags for vertex attributes.
150 * These are used in bitfields in many places.
153 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
154 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
155 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
156 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
157 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
158 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
159 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
160 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
161 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
162 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
163 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
164 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
165 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
166 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
167 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
168 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
169 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
170 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
171 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
172 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
173 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
174 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
175 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
176 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
177 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
178 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
179 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
180 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
181 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
182 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
183 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
184 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
186 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
187 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
192 * Indexes for vertex program result attributes. Note that
193 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
194 * assumptions about the layout of this enum.
198 VERT_RESULT_HPOS
= 0,
199 VERT_RESULT_COL0
= 1,
200 VERT_RESULT_COL1
= 2,
201 VERT_RESULT_FOGC
= 3,
202 VERT_RESULT_TEX0
= 4,
203 VERT_RESULT_TEX1
= 5,
204 VERT_RESULT_TEX2
= 6,
205 VERT_RESULT_TEX3
= 7,
206 VERT_RESULT_TEX4
= 8,
207 VERT_RESULT_TEX5
= 9,
208 VERT_RESULT_TEX6
= 10,
209 VERT_RESULT_TEX7
= 11,
210 VERT_RESULT_PSIZ
= 12,
211 VERT_RESULT_BFC0
= 13,
212 VERT_RESULT_BFC1
= 14,
213 VERT_RESULT_EDGE
= 15,
214 VERT_RESULT_CLIP_VERTEX
= 16,
215 VERT_RESULT_CLIP_DIST0
= 17,
216 VERT_RESULT_CLIP_DIST1
= 18,
217 VERT_RESULT_VAR0
= 19, /**< shader varying */
218 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
222 /*********************************************/
225 * Indexes for geometry program attributes.
229 GEOM_ATTRIB_POSITION
= 0,
230 GEOM_ATTRIB_COLOR0
= 1,
231 GEOM_ATTRIB_COLOR1
= 2,
232 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
233 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
234 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
235 GEOM_ATTRIB_POINT_SIZE
= 6,
236 GEOM_ATTRIB_CLIP_VERTEX
= 7,
237 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
238 GEOM_ATTRIB_TEX_COORD
= 9,
240 GEOM_ATTRIB_VAR0
= 16,
241 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
245 * Bitflags for geometry attributes.
246 * These are used in bitfields in many places.
249 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
250 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
251 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
252 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
253 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
254 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
255 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
256 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
257 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
258 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
259 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
261 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
266 * Indexes for geometry program result attributes
271 GEOM_RESULT_COL0
= 1,
272 GEOM_RESULT_COL1
= 2,
273 GEOM_RESULT_SCOL0
= 3,
274 GEOM_RESULT_SCOL1
= 4,
275 GEOM_RESULT_FOGC
= 5,
276 GEOM_RESULT_TEX0
= 6,
277 GEOM_RESULT_TEX1
= 7,
278 GEOM_RESULT_TEX2
= 8,
279 GEOM_RESULT_TEX3
= 9,
280 GEOM_RESULT_TEX4
= 10,
281 GEOM_RESULT_TEX5
= 11,
282 GEOM_RESULT_TEX6
= 12,
283 GEOM_RESULT_TEX7
= 13,
284 GEOM_RESULT_PSIZ
= 14,
285 GEOM_RESULT_CLPV
= 15,
286 GEOM_RESULT_PRID
= 16,
287 GEOM_RESULT_LAYR
= 17,
288 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
289 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
290 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
295 * Indexes for fragment program input attributes. Note that
296 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
297 * assumptions about the layout of this enum.
301 FRAG_ATTRIB_WPOS
= 0,
302 FRAG_ATTRIB_COL0
= 1,
303 FRAG_ATTRIB_COL1
= 2,
304 FRAG_ATTRIB_FOGC
= 3,
305 FRAG_ATTRIB_TEX0
= 4,
306 FRAG_ATTRIB_TEX1
= 5,
307 FRAG_ATTRIB_TEX2
= 6,
308 FRAG_ATTRIB_TEX3
= 7,
309 FRAG_ATTRIB_TEX4
= 8,
310 FRAG_ATTRIB_TEX5
= 9,
311 FRAG_ATTRIB_TEX6
= 10,
312 FRAG_ATTRIB_TEX7
= 11,
313 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
314 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
315 FRAG_ATTRIB_CLIP_DIST0
= 14,
316 FRAG_ATTRIB_CLIP_DIST1
= 15,
317 FRAG_ATTRIB_VAR0
= 16, /**< shader varying */
318 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
323 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
325 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
327 * gl_vert_result values which have no corresponding gl_frag_attrib
328 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
329 * VERT_RESULT_EDGE) are converted to a value of -1.
332 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result
)
334 if (vert_result
>= VERT_RESULT_CLIP_DIST0
)
335 return vert_result
- VERT_RESULT_CLIP_DIST0
+ FRAG_ATTRIB_CLIP_DIST0
;
336 else if (vert_result
<= VERT_RESULT_TEX7
)
344 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
346 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
348 * gl_frag_attrib values which have no corresponding gl_vert_result
349 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
352 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib
)
354 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
356 else if (frag_attrib
>= FRAG_ATTRIB_CLIP_DIST0
)
357 return frag_attrib
- FRAG_ATTRIB_CLIP_DIST0
+ VERT_RESULT_CLIP_DIST0
;
364 * Bitflags for fragment program input attributes.
367 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
368 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
369 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
370 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
371 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
372 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
373 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
374 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
375 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
376 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
377 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
378 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
379 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
380 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
381 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
383 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
384 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
386 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
398 * Fragment program results
402 FRAG_RESULT_DEPTH
= 0,
403 FRAG_RESULT_STENCIL
= 1,
404 /* If a single color should be written to all render targets, this
405 * register is written. No FRAG_RESULT_DATAn will be written.
407 FRAG_RESULT_COLOR
= 2,
409 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
410 * or ARB_fragment_program fragment.color[n]) color results. If
411 * any are written, FRAG_RESULT_COLOR will not be written.
413 FRAG_RESULT_DATA0
= 3,
414 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
419 * Indexes for all renderbuffers
423 /* the four standard color buffers */
431 /* optional aux buffer */
433 /* generic renderbuffers */
446 * Bit flags for all renderbuffers
448 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
449 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
450 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
451 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
452 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
453 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
454 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
455 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
456 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
457 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
458 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
459 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
460 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
461 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
462 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
463 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
464 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
465 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
466 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
469 * Mask of all the color buffer bits (but not accum).
471 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
472 BUFFER_BIT_BACK_LEFT | \
473 BUFFER_BIT_FRONT_RIGHT | \
474 BUFFER_BIT_BACK_RIGHT | \
476 BUFFER_BIT_COLOR0 | \
477 BUFFER_BIT_COLOR1 | \
478 BUFFER_BIT_COLOR2 | \
479 BUFFER_BIT_COLOR3 | \
480 BUFFER_BIT_COLOR4 | \
481 BUFFER_BIT_COLOR5 | \
482 BUFFER_BIT_COLOR6 | \
487 * Framebuffer configuration (aka visual / pixelformat)
488 * Note: some of these fields should be boolean, but it appears that
489 * code in drivers/dri/common/util.c requires int-sized fields.
495 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
496 GLuint doubleBufferMode
;
499 GLboolean haveAccumBuffer
;
500 GLboolean haveDepthBuffer
;
501 GLboolean haveStencilBuffer
;
503 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
504 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
505 GLint rgbBits
; /* total bits for rgb */
506 GLint indexBits
; /* total bits for colorindex */
508 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
516 /* EXT_visual_rating / GLX 1.2 */
519 /* EXT_visual_info / GLX 1.2 */
520 GLint transparentPixel
;
521 /* colors are floats scaled to ints */
522 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
523 GLint transparentIndex
;
525 /* ARB_multisample / SGIS_multisample */
529 /* SGIX_pbuffer / GLX 1.3 */
530 GLint maxPbufferWidth
;
531 GLint maxPbufferHeight
;
532 GLint maxPbufferPixels
;
533 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
534 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
536 /* OML_swap_method */
539 /* EXT_texture_from_pixmap */
540 GLint bindToTextureRgb
;
541 GLint bindToTextureRgba
;
542 GLint bindToMipmapTexture
;
543 GLint bindToTextureTargets
;
546 /* EXT_framebuffer_sRGB */
552 * \name Bit flags used for updating material values.
555 #define MAT_ATTRIB_FRONT_AMBIENT 0
556 #define MAT_ATTRIB_BACK_AMBIENT 1
557 #define MAT_ATTRIB_FRONT_DIFFUSE 2
558 #define MAT_ATTRIB_BACK_DIFFUSE 3
559 #define MAT_ATTRIB_FRONT_SPECULAR 4
560 #define MAT_ATTRIB_BACK_SPECULAR 5
561 #define MAT_ATTRIB_FRONT_EMISSION 6
562 #define MAT_ATTRIB_BACK_EMISSION 7
563 #define MAT_ATTRIB_FRONT_SHININESS 8
564 #define MAT_ATTRIB_BACK_SHININESS 9
565 #define MAT_ATTRIB_FRONT_INDEXES 10
566 #define MAT_ATTRIB_BACK_INDEXES 11
567 #define MAT_ATTRIB_MAX 12
569 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
570 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
571 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
572 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
573 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
574 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
576 #define MAT_INDEX_AMBIENT 0
577 #define MAT_INDEX_DIFFUSE 1
578 #define MAT_INDEX_SPECULAR 2
580 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
581 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
582 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
583 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
584 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
585 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
586 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
587 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
588 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
589 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
590 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
591 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
594 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
595 MAT_BIT_FRONT_AMBIENT | \
596 MAT_BIT_FRONT_DIFFUSE | \
597 MAT_BIT_FRONT_SPECULAR | \
598 MAT_BIT_FRONT_SHININESS | \
599 MAT_BIT_FRONT_INDEXES)
601 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
602 MAT_BIT_BACK_AMBIENT | \
603 MAT_BIT_BACK_DIFFUSE | \
604 MAT_BIT_BACK_SPECULAR | \
605 MAT_BIT_BACK_SHININESS | \
606 MAT_BIT_BACK_INDEXES)
608 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
612 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
613 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
616 * Material shininess lookup table.
620 struct gl_shine_tab
*next
, *prev
;
621 GLfloat tab
[SHINE_TABLE_SIZE
+1];
628 * Light source state.
632 struct gl_light
*next
; /**< double linked list with sentinel */
633 struct gl_light
*prev
;
635 GLfloat Ambient
[4]; /**< ambient color */
636 GLfloat Diffuse
[4]; /**< diffuse color */
637 GLfloat Specular
[4]; /**< specular color */
638 GLfloat EyePosition
[4]; /**< position in eye coordinates */
639 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
640 GLfloat SpotExponent
;
641 GLfloat SpotCutoff
; /**< in degrees */
642 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
643 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
644 GLfloat ConstantAttenuation
;
645 GLfloat LinearAttenuation
;
646 GLfloat QuadraticAttenuation
;
647 GLboolean Enabled
; /**< On/off flag */
650 * \name Derived fields
653 GLbitfield _Flags
; /**< State */
655 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
656 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
657 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
658 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
659 GLfloat _VP_inf_spot_attenuation
;
661 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
662 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
663 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
664 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
665 GLfloat _dli
; /**< CI diffuse light intensity */
666 GLfloat _sli
; /**< CI specular light intensity */
676 GLfloat Ambient
[4]; /**< ambient color */
677 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
678 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
679 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
680 * or GL_SEPARATE_SPECULAR_COLOR */
689 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
694 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
696 struct gl_accum_attrib
698 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
703 * Used for storing clear color, texture border color, etc.
704 * The float values are typically unclamped.
715 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
717 struct gl_colorbuffer_attrib
719 GLuint ClearIndex
; /**< Index for glClear */
720 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
721 GLuint IndexMask
; /**< Color index write mask */
722 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
724 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
727 * \name alpha testing
730 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
731 GLenum AlphaFunc
; /**< Alpha test function */
732 GLfloat AlphaRefUnclamped
;
733 GLclampf AlphaRef
; /**< Alpha reference value */
740 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
742 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
743 * control, only on the fixed-pointness of the render target.
744 * The query does however depend on fragment color clamping.
746 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
747 GLfloat BlendColor
[4]; /**< Blending color */
751 GLenum SrcRGB
; /**< RGB blend source term */
752 GLenum DstRGB
; /**< RGB blend dest term */
753 GLenum SrcA
; /**< Alpha blend source term */
754 GLenum DstA
; /**< Alpha blend dest term */
755 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
756 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
757 } Blend
[MAX_DRAW_BUFFERS
];
758 /** Are the blend func terms currently different for each buffer/target? */
759 GLboolean _BlendFuncPerBuffer
;
760 /** Are the blend equations currently different for each buffer/target? */
761 GLboolean _BlendEquationPerBuffer
;
768 GLenum LogicOp
; /**< Logic operator */
769 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
770 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
773 GLboolean DitherFlag
; /**< Dither enable flag */
775 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
776 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
777 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
778 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
780 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
785 * Current attribute group (GL_CURRENT_BIT).
787 struct gl_current_attrib
790 * \name Current vertex attributes.
791 * \note Values are valid only after FLUSH_VERTICES has been called.
792 * \note Index and Edgeflag current values are stored as floats in the
793 * SIX and SEVEN attribute slots.
795 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
798 * \name Current raster position attributes (always valid).
799 * \note This set of attributes is very similar to the SWvertex struct.
802 GLfloat RasterPos
[4];
803 GLfloat RasterDistance
;
804 GLfloat RasterColor
[4];
805 GLfloat RasterSecondaryColor
[4];
806 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
807 GLboolean RasterPosValid
;
813 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
815 struct gl_depthbuffer_attrib
817 GLenum Func
; /**< Function for depth buffer compare */
818 GLclampd Clear
; /**< Value to clear depth buffer to */
819 GLboolean Test
; /**< Depth buffering enabled flag */
820 GLboolean Mask
; /**< Depth buffer writable? */
821 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
822 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
827 * Evaluator attribute group (GL_EVAL_BIT).
829 struct gl_eval_attrib
835 GLboolean Map1Color4
;
837 GLboolean Map1Normal
;
838 GLboolean Map1TextureCoord1
;
839 GLboolean Map1TextureCoord2
;
840 GLboolean Map1TextureCoord3
;
841 GLboolean Map1TextureCoord4
;
842 GLboolean Map1Vertex3
;
843 GLboolean Map1Vertex4
;
844 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
845 GLboolean Map2Color4
;
847 GLboolean Map2Normal
;
848 GLboolean Map2TextureCoord1
;
849 GLboolean Map2TextureCoord2
;
850 GLboolean Map2TextureCoord3
;
851 GLboolean Map2TextureCoord4
;
852 GLboolean Map2Vertex3
;
853 GLboolean Map2Vertex4
;
854 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
855 GLboolean AutoNormal
;
859 * \name Map Grid endpoints and divisions and calculated du values
863 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
864 GLint MapGrid2un
, MapGrid2vn
;
865 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
866 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
872 * Fog attribute group (GL_FOG_BIT).
876 GLboolean Enabled
; /**< Fog enabled flag */
877 GLfloat ColorUnclamped
[4]; /**< Fog color */
878 GLfloat Color
[4]; /**< Fog color */
879 GLfloat Density
; /**< Density >= 0.0 */
880 GLfloat Start
; /**< Start distance in eye coords */
881 GLfloat End
; /**< End distance in eye coords */
882 GLfloat Index
; /**< Fog index */
883 GLenum Mode
; /**< Fog mode */
884 GLboolean ColorSumEnabled
;
885 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
886 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
891 * \brief Layout qualifiers for gl_FragDepth.
893 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
894 * a layout qualifier.
896 * \see enum ir_depth_layout
898 enum gl_frag_depth_layout
{
899 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
900 FRAG_DEPTH_LAYOUT_ANY
,
901 FRAG_DEPTH_LAYOUT_GREATER
,
902 FRAG_DEPTH_LAYOUT_LESS
,
903 FRAG_DEPTH_LAYOUT_UNCHANGED
908 * Hint attribute group (GL_HINT_BIT).
910 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
912 struct gl_hint_attrib
914 GLenum PerspectiveCorrection
;
917 GLenum PolygonSmooth
;
919 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
920 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
921 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
922 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
929 #define LIGHT_SPOT 0x1
930 #define LIGHT_LOCAL_VIEWER 0x2
931 #define LIGHT_POSITIONAL 0x4
932 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
937 * Lighting attribute group (GL_LIGHT_BIT).
939 struct gl_light_attrib
941 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
942 struct gl_lightmodel Model
; /**< Lighting model */
945 * Must flush FLUSH_VERTICES before referencing:
948 struct gl_material Material
; /**< Includes front & back values */
951 GLboolean Enabled
; /**< Lighting enabled flag */
952 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
953 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
954 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
955 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
956 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
957 GLboolean ColorMaterialEnabled
;
958 GLenum ClampVertexColor
;
959 GLboolean _ClampVertexColor
;
961 struct gl_light EnabledList
; /**< List sentinel */
964 * Derived state for optimizations:
967 GLboolean _NeedEyeCoords
;
968 GLboolean _NeedVertices
; /**< Use fast shader? */
969 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
970 GLfloat _BaseColor
[2][3];
976 * Line attribute group (GL_LINE_BIT).
978 struct gl_line_attrib
980 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
981 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
982 GLushort StipplePattern
; /**< Stipple pattern */
983 GLint StippleFactor
; /**< Stipple repeat factor */
984 GLfloat Width
; /**< Line width */
989 * Display list attribute group (GL_LIST_BIT).
991 struct gl_list_attrib
998 * Multisample attribute group (GL_MULTISAMPLE_BIT).
1000 struct gl_multisample_attrib
1003 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
1004 GLboolean SampleAlphaToCoverage
;
1005 GLboolean SampleAlphaToOne
;
1006 GLboolean SampleCoverage
;
1007 GLfloat SampleCoverageValue
;
1008 GLboolean SampleCoverageInvert
;
1013 * A pixelmap (see glPixelMap)
1018 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1019 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1024 * Collection of all pixelmaps
1028 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1029 struct gl_pixelmap GtoG
;
1030 struct gl_pixelmap BtoB
;
1031 struct gl_pixelmap AtoA
;
1032 struct gl_pixelmap ItoR
;
1033 struct gl_pixelmap ItoG
;
1034 struct gl_pixelmap ItoB
;
1035 struct gl_pixelmap ItoA
;
1036 struct gl_pixelmap ItoI
;
1037 struct gl_pixelmap StoS
;
1042 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1044 struct gl_pixel_attrib
1046 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1048 /*--- Begin Pixel Transfer State ---*/
1049 /* Fields are in the order in which they're applied... */
1051 /** Scale & Bias (index shift, offset) */
1053 GLfloat RedBias
, RedScale
;
1054 GLfloat GreenBias
, GreenScale
;
1055 GLfloat BlueBias
, BlueScale
;
1056 GLfloat AlphaBias
, AlphaScale
;
1057 GLfloat DepthBias
, DepthScale
;
1058 GLint IndexShift
, IndexOffset
;
1062 /* Note: actual pixel maps are not part of this attrib group */
1063 GLboolean MapColorFlag
;
1064 GLboolean MapStencilFlag
;
1066 /*--- End Pixel Transfer State ---*/
1069 GLfloat ZoomX
, ZoomY
;
1074 * Point attribute group (GL_POINT_BIT).
1076 struct gl_point_attrib
1078 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1079 GLfloat Size
; /**< User-specified point size */
1080 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1081 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1082 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1083 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1084 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1085 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1086 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1087 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1092 * Polygon attribute group (GL_POLYGON_BIT).
1094 struct gl_polygon_attrib
1096 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1097 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1098 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1099 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1100 GLboolean CullFlag
; /**< Culling on/off flag */
1101 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1102 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1103 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1104 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1105 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1106 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1107 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1108 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1113 * Scissor attributes (GL_SCISSOR_BIT).
1115 struct gl_scissor_attrib
1117 GLboolean Enabled
; /**< Scissor test enabled? */
1118 GLint X
, Y
; /**< Lower left corner of box */
1119 GLsizei Width
, Height
; /**< Size of box */
1124 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1126 * Three sets of stencil data are tracked so that OpenGL 2.0,
1127 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1128 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1129 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1130 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1131 * GL_EXT_stencil_two_side GL_BACK state.
1133 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1134 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1136 * The derived value \c _TestTwoSide is set when the front-face and back-face
1137 * stencil state are different.
1139 struct gl_stencil_attrib
1141 GLboolean Enabled
; /**< Enabled flag */
1142 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1143 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1144 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1145 GLboolean _TestTwoSide
;
1146 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1147 GLenum Function
[3]; /**< Stencil function */
1148 GLenum FailFunc
[3]; /**< Fail function */
1149 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1150 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1151 GLint Ref
[3]; /**< Reference value */
1152 GLuint ValueMask
[3]; /**< Value mask */
1153 GLuint WriteMask
[3]; /**< Write mask */
1154 GLuint Clear
; /**< Clear value */
1159 * An index for each type of texture object. These correspond to the GL
1160 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1161 * Note: the order is from highest priority to lowest priority.
1165 TEXTURE_BUFFER_INDEX
,
1166 TEXTURE_2D_ARRAY_INDEX
,
1167 TEXTURE_1D_ARRAY_INDEX
,
1178 * Bit flags for each type of texture object
1179 * Used for Texture.Unit[]._ReallyEnabled flags.
1182 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1183 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1184 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1185 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1186 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1187 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1188 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1189 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1194 * TexGenEnabled flags.
1201 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1206 * Bit flag versions of the corresponding GL_ constants.
1209 #define TEXGEN_SPHERE_MAP 0x1
1210 #define TEXGEN_OBJ_LINEAR 0x2
1211 #define TEXGEN_EYE_LINEAR 0x4
1212 #define TEXGEN_REFLECTION_MAP_NV 0x8
1213 #define TEXGEN_NORMAL_MAP_NV 0x10
1215 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1216 TEXGEN_REFLECTION_MAP_NV | \
1217 TEXGEN_NORMAL_MAP_NV)
1218 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1219 TEXGEN_REFLECTION_MAP_NV | \
1220 TEXGEN_NORMAL_MAP_NV | \
1226 /** Tex-gen enabled for texture unit? */
1227 #define ENABLE_TEXGEN(unit) (1 << (unit))
1229 /** Non-identity texture matrix for texture unit? */
1230 #define ENABLE_TEXMAT(unit) (1 << (unit))
1234 * Texture image state. Describes the dimensions of a texture image,
1235 * the texel format and pointers to Texel Fetch functions.
1237 struct gl_texture_image
1239 GLint InternalFormat
; /**< Internal format as given by the user */
1240 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1241 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1242 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1243 * GL_DEPTH_STENCIL_EXT only. Used for
1244 * choosing TexEnv arithmetic.
1246 gl_format TexFormat
; /**< The actual texture memory format */
1248 GLuint Border
; /**< 0 or 1 */
1249 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1250 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1251 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1252 GLuint Width2
; /**< = Width - 2*Border */
1253 GLuint Height2
; /**< = Height - 2*Border */
1254 GLuint Depth2
; /**< = Depth - 2*Border */
1255 GLuint WidthLog2
; /**< = log2(Width2) */
1256 GLuint HeightLog2
; /**< = log2(Height2) */
1257 GLuint DepthLog2
; /**< = log2(Depth2) */
1258 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1260 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1261 GLuint Level
; /**< Which mipmap level am I? */
1262 /** Cube map face: index into gl_texture_object::Image[] array */
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() */
1273 * Indexes for cube map faces.
1288 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1289 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1291 struct gl_sampler_object
1296 GLenum WrapS
; /**< S-axis texture image wrap mode */
1297 GLenum WrapT
; /**< T-axis texture image wrap mode */
1298 GLenum WrapR
; /**< R-axis texture image wrap mode */
1299 GLenum MinFilter
; /**< minification filter */
1300 GLenum MagFilter
; /**< magnification filter */
1301 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1302 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1303 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1304 GLfloat LodBias
; /**< OpenGL 1.4 */
1305 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1306 GLenum CompareMode
; /**< GL_ARB_shadow */
1307 GLenum CompareFunc
; /**< GL_ARB_shadow */
1308 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1309 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1310 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1312 /* deprecated sampler state */
1313 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1315 /** Is the texture object complete with respect to this sampler? */
1316 GLboolean _CompleteTexture
;
1321 * Texture object state. Contains the array of mipmap images, border color,
1322 * wrap modes, filter modes, and shadow/texcompare state.
1324 struct gl_texture_object
1326 _glthread_Mutex Mutex
; /**< for thread safety */
1327 GLint RefCount
; /**< reference count */
1328 GLuint Name
; /**< the user-visible texture object ID */
1329 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1331 struct gl_sampler_object Sampler
;
1333 GLfloat Priority
; /**< in [0,1] */
1334 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1335 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1336 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1337 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1338 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1339 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1340 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1341 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1342 GLboolean _Complete
; /**< Is texture object complete? */
1343 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1344 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1346 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1347 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1349 /** GL_ARB_texture_buffer_object */
1350 struct gl_buffer_object
*BufferObject
;
1351 GLenum BufferObjectFormat
;
1354 * \name For device driver.
1355 * Note: instead of attaching driver data to this pointer, it's preferable
1356 * to instead use this struct as a base class for your own texture object
1357 * class. Driver->NewTextureObject() can be used to implement the
1360 void *DriverData
; /**< Arbitrary device driver data */
1364 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1365 #define MAX_COMBINER_TERMS 4
1369 * Texture combine environment state.
1371 struct gl_tex_env_combine_state
1373 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1374 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1375 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1376 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1377 GLenum SourceA
[MAX_COMBINER_TERMS
];
1378 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1379 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1380 GLenum OperandA
[MAX_COMBINER_TERMS
];
1381 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1382 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1383 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1384 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1389 * Texture coord generation state.
1393 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1394 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1395 GLfloat ObjectPlane
[4];
1396 GLfloat EyePlane
[4];
1401 * Texture unit state. Contains enable flags, texture environment/function/
1402 * combiners, texgen state, and pointers to current texture objects.
1404 struct gl_texture_unit
1406 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1407 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1409 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1410 GLclampf EnvColor
[4];
1411 GLfloat EnvColorUnclamped
[4];
1413 struct gl_texgen GenS
;
1414 struct gl_texgen GenT
;
1415 struct gl_texgen GenR
;
1416 struct gl_texgen GenQ
;
1417 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1418 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1420 GLfloat LodBias
; /**< for biasing mipmap levels */
1422 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1424 /** Current sampler object (GL_ARB_sampler_objects) */
1425 struct gl_sampler_object
*Sampler
;
1428 * \name GL_EXT_texture_env_combine
1430 struct gl_tex_env_combine_state Combine
;
1433 * Derived state based on \c EnvMode and the \c BaseFormat of the
1434 * currently enabled texture.
1436 struct gl_tex_env_combine_state _EnvMode
;
1439 * Currently enabled combiner state. This will point to either
1440 * \c Combine or \c _EnvMode.
1442 struct gl_tex_env_combine_state
*_CurrentCombine
;
1444 /** Current texture object pointers */
1445 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1447 /** Points to highest priority, complete and enabled texture object */
1448 struct gl_texture_object
*_Current
;
1453 * Texture attribute group (GL_TEXTURE_BIT).
1455 struct gl_texture_attrib
1457 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1458 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1460 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1462 /** GL_ARB_texture_buffer_object */
1463 struct gl_buffer_object
*BufferObject
;
1465 /** GL_ARB_seamless_cubemap */
1466 GLboolean CubeMapSeamless
;
1468 /** Texture units/samplers used by vertex or fragment texturing */
1469 GLbitfield _EnabledUnits
;
1471 /** Texture coord units/sets used for fragment texturing */
1472 GLbitfield _EnabledCoordUnits
;
1474 /** Texture coord units that have texgen enabled */
1475 GLbitfield _TexGenEnabled
;
1477 /** Texture coord units that have non-identity matrices */
1478 GLbitfield _TexMatEnabled
;
1480 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1481 GLbitfield _GenFlags
;
1486 * Data structure representing a single clip plane (e.g. one of the elements
1487 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1489 typedef GLfloat gl_clip_plane
[4];
1493 * Transformation attribute group (GL_TRANSFORM_BIT).
1495 struct gl_transform_attrib
1497 GLenum MatrixMode
; /**< Matrix mode */
1498 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1499 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1500 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1501 GLboolean Normalize
; /**< Normalize all normals? */
1502 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1503 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1504 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1506 GLfloat CullEyePos
[4];
1507 GLfloat CullObjPos
[4];
1512 * Viewport attribute group (GL_VIEWPORT_BIT).
1514 struct gl_viewport_attrib
1516 GLint X
, Y
; /**< position */
1517 GLsizei Width
, Height
; /**< size */
1518 GLfloat Near
, Far
; /**< Depth buffer range */
1519 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1524 * GL_ARB_vertex/pixel_buffer_object buffer object
1526 struct gl_buffer_object
1528 _glthread_Mutex Mutex
;
1531 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1532 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1533 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1534 /** Fields describing a mapped buffer */
1536 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1537 GLvoid
*Pointer
; /**< User-space address of mapping */
1538 GLintptr Offset
; /**< Mapped offset */
1539 GLsizeiptr Length
; /**< Mapped length */
1541 GLboolean Written
; /**< Ever written to? (for debugging) */
1542 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1547 * Client pixel packing/unpacking attributes
1549 struct gl_pixelstore_attrib
1557 GLboolean SwapBytes
;
1559 GLboolean Invert
; /**< GL_MESA_pack_invert */
1560 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1565 * Client vertex array attributes
1567 struct gl_client_array
1569 GLint Size
; /**< components per element (1,2,3,4) */
1570 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1571 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1572 GLsizei Stride
; /**< user-specified stride */
1573 GLsizei StrideB
; /**< actual stride in bytes */
1574 const GLubyte
*Ptr
; /**< Points to array data */
1575 GLboolean Enabled
; /**< Enabled flag is a boolean */
1576 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1577 GLboolean Integer
; /**< Integer-valued? */
1578 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1579 GLuint _ElementSize
; /**< size of each element in bytes */
1581 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1582 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1587 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1588 * extension, but a nice encapsulation in any case.
1590 struct gl_array_object
1592 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1596 _glthread_Mutex Mutex
;
1597 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1599 /** Conventional vertex arrays */
1601 struct gl_client_array Vertex
;
1602 struct gl_client_array Weight
;
1603 struct gl_client_array Normal
;
1604 struct gl_client_array Color
;
1605 struct gl_client_array SecondaryColor
;
1606 struct gl_client_array FogCoord
;
1607 struct gl_client_array Index
;
1608 struct gl_client_array EdgeFlag
;
1609 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1610 struct gl_client_array PointSize
;
1614 * Generic arrays for vertex programs/shaders.
1615 * For NV vertex programs, these attributes alias and take priority
1616 * over the conventional attribs above. For ARB vertex programs and
1617 * GLSL vertex shaders, these attributes are separate.
1619 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1621 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1622 GLbitfield _Enabled
;
1625 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1626 * we can determine the max legal (in bounds) glDrawElements array index.
1633 * Vertex array state
1635 struct gl_array_attrib
1637 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1638 struct gl_array_object
*ArrayObj
;
1640 /** The default vertex array object */
1641 struct gl_array_object
*DefaultArrayObj
;
1643 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1644 struct _mesa_HashTable
*Objects
;
1646 GLint ActiveTexture
; /**< Client Active Texture */
1647 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1648 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1650 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1651 GLboolean PrimitiveRestart
;
1652 GLuint RestartIndex
;
1654 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1655 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1657 /* GL_ARB_vertex_buffer_object */
1658 struct gl_buffer_object
*ArrayBufferObj
;
1659 struct gl_buffer_object
*ElementArrayBufferObj
;
1664 * Feedback buffer state
1669 GLbitfield _Mask
; /**< FB_* bits */
1677 * Selection buffer state
1681 GLuint
*Buffer
; /**< selection buffer */
1682 GLuint BufferSize
; /**< size of the selection buffer */
1683 GLuint BufferCount
; /**< number of values in the selection buffer */
1684 GLuint Hits
; /**< number of records in the selection buffer */
1685 GLuint NameStackDepth
; /**< name stack depth */
1686 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1687 GLboolean HitFlag
; /**< hit flag */
1688 GLfloat HitMinZ
; /**< minimum hit depth */
1689 GLfloat HitMaxZ
; /**< maximum hit depth */
1694 * 1-D Evaluator control points
1698 GLuint Order
; /**< Number of control points */
1699 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1700 GLfloat
*Points
; /**< Points to contiguous control points */
1705 * 2-D Evaluator control points
1709 GLuint Uorder
; /**< Number of control points in U dimension */
1710 GLuint Vorder
; /**< Number of control points in V dimension */
1713 GLfloat
*Points
; /**< Points to contiguous control points */
1718 * All evaluator control point state
1720 struct gl_evaluators
1726 struct gl_1d_map Map1Vertex3
;
1727 struct gl_1d_map Map1Vertex4
;
1728 struct gl_1d_map Map1Index
;
1729 struct gl_1d_map Map1Color4
;
1730 struct gl_1d_map Map1Normal
;
1731 struct gl_1d_map Map1Texture1
;
1732 struct gl_1d_map Map1Texture2
;
1733 struct gl_1d_map Map1Texture3
;
1734 struct gl_1d_map Map1Texture4
;
1735 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1742 struct gl_2d_map Map2Vertex3
;
1743 struct gl_2d_map Map2Vertex4
;
1744 struct gl_2d_map Map2Index
;
1745 struct gl_2d_map Map2Color4
;
1746 struct gl_2d_map Map2Normal
;
1747 struct gl_2d_map Map2Texture1
;
1748 struct gl_2d_map Map2Texture2
;
1749 struct gl_2d_map Map2Texture3
;
1750 struct gl_2d_map Map2Texture4
;
1751 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1757 * Names of the various vertex/fragment program register files, etc.
1759 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1760 * All values should fit in a 4-bit field.
1762 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1763 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1764 * be "uniform" variables since they can only be set outside glBegin/End.
1765 * They're also all stored in the same Parameters array.
1769 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1770 PROGRAM_INPUT
, /**< machine->Inputs[] */
1771 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1772 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1773 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1774 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1775 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1776 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1777 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1778 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1779 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1780 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1781 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1782 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1783 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1789 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1790 * one of these values.
1794 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1795 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1796 SYSTEM_VALUE_MAX
/**< Number of values */
1800 /** Vertex and fragment instructions */
1801 struct prog_instruction
;
1802 struct gl_program_parameter_list
;
1803 struct gl_uniform_list
;
1807 * Base class for any kind of program object
1812 GLubyte
*String
; /**< Null-terminated program text */
1814 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1815 GLenum Format
; /**< String encoding format */
1818 struct prog_instruction
*Instructions
;
1820 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1821 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1822 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1823 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1824 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1825 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1826 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1827 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1830 /** Named parameters, constants, etc. from program text */
1831 struct gl_program_parameter_list
*Parameters
;
1832 /** Numbered local parameters */
1833 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1835 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1836 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1837 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1838 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1840 /** Bitmask of which register files are read/written with indirect
1841 * addressing. Mask of (1 << PROGRAM_x) bits.
1843 GLbitfield IndirectRegisterFiles
;
1845 /** Logical counts */
1847 GLuint NumInstructions
;
1848 GLuint NumTemporaries
;
1849 GLuint NumParameters
;
1850 GLuint NumAttributes
;
1851 GLuint NumAddressRegs
;
1852 GLuint NumAluInstructions
;
1853 GLuint NumTexInstructions
;
1854 GLuint NumTexIndirections
;
1856 /** Native, actual h/w counts */
1858 GLuint NumNativeInstructions
;
1859 GLuint NumNativeTemporaries
;
1860 GLuint NumNativeParameters
;
1861 GLuint NumNativeAttributes
;
1862 GLuint NumNativeAddressRegs
;
1863 GLuint NumNativeAluInstructions
;
1864 GLuint NumNativeTexInstructions
;
1865 GLuint NumNativeTexIndirections
;
1870 /** Vertex program object */
1871 struct gl_vertex_program
1873 struct gl_program Base
; /**< base class */
1874 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1875 GLboolean IsPositionInvariant
;
1876 GLboolean UsesClipDistance
;
1880 /** Geometry program object */
1881 struct gl_geometry_program
1883 struct gl_program Base
; /**< base class */
1886 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1887 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1888 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1892 /** Fragment program object */
1893 struct gl_fragment_program
1895 struct gl_program Base
; /**< base class */
1896 GLboolean UsesKill
; /**< shader uses KIL instruction */
1897 GLboolean OriginUpperLeft
;
1898 GLboolean PixelCenterInteger
;
1899 enum gl_frag_depth_layout FragDepthLayout
;
1904 * State common to vertex and fragment programs.
1906 struct gl_program_state
1908 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1909 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1914 * Context state for vertex programs.
1916 struct gl_vertex_program_state
1918 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1919 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1920 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1921 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1922 /** Computed two sided lighting for fixed function/programs. */
1923 GLboolean _TwoSideEnabled
;
1924 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1926 /** Currently enabled and valid vertex program (including internal
1927 * programs, user-defined vertex programs and GLSL vertex shaders).
1928 * This is the program we must use when rendering.
1930 struct gl_vertex_program
*_Current
;
1932 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1934 /* For GL_NV_vertex_program only: */
1935 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1936 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1938 /** Should fixed-function T&L be implemented with a vertex prog? */
1939 GLboolean _MaintainTnlProgram
;
1941 /** Program to emulate fixed-function T&L (see above) */
1942 struct gl_vertex_program
*_TnlProgram
;
1944 /** Cache of fixed-function programs */
1945 struct gl_program_cache
*Cache
;
1947 GLboolean _Overriden
;
1952 * Context state for geometry programs.
1954 struct gl_geometry_program_state
1956 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1957 GLboolean _Enabled
; /**< Enabled and valid program? */
1958 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1960 /** Currently enabled and valid program (including internal programs
1961 * and compiled shader programs).
1963 struct gl_geometry_program
*_Current
;
1965 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1967 /** Cache of fixed-function programs */
1968 struct gl_program_cache
*Cache
;
1972 * Context state for fragment programs.
1974 struct gl_fragment_program_state
1976 GLboolean Enabled
; /**< User-set fragment program enable flag */
1977 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1978 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1980 /** Currently enabled and valid fragment program (including internal
1981 * programs, user-defined fragment programs and GLSL fragment shaders).
1982 * This is the program we must use when rendering.
1984 struct gl_fragment_program
*_Current
;
1986 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1988 /** Should fixed-function texturing be implemented with a fragment prog? */
1989 GLboolean _MaintainTexEnvProgram
;
1991 /** Program to emulate fixed-function texture env/combine (see above) */
1992 struct gl_fragment_program
*_TexEnvProgram
;
1994 /** Cache of fixed-function programs */
1995 struct gl_program_cache
*Cache
;
2000 * ATI_fragment_shader runtime state
2002 #define ATI_FS_INPUT_PRIMARY 0
2003 #define ATI_FS_INPUT_SECONDARY 1
2005 struct atifs_instruction
;
2006 struct atifs_setupinst
;
2009 * ATI fragment shader
2011 struct ati_fragment_shader
2015 struct atifs_instruction
*Instructions
[2];
2016 struct atifs_setupinst
*SetupInst
[2];
2017 GLfloat Constants
[8][4];
2018 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2019 GLubyte numArithInstr
[2];
2020 GLubyte regsAssigned
[2];
2021 GLubyte NumPasses
; /**< 1 or 2 */
2023 GLubyte last_optype
;
2024 GLboolean interpinp1
;
2030 * Context state for GL_ATI_fragment_shader
2032 struct gl_ati_fragment_shader_state
2035 GLboolean _Enabled
; /**< enabled and valid shader? */
2036 GLboolean Compiling
;
2037 GLfloat GlobalConstants
[8][4];
2038 struct ati_fragment_shader
*Current
;
2043 * Occlusion/timer query object.
2045 struct gl_query_object
2047 GLenum Target
; /**< The query target, when active */
2048 GLuint Id
; /**< hash table ID/name */
2049 GLuint64EXT Result
; /**< the counter */
2050 GLboolean Active
; /**< inside Begin/EndQuery */
2051 GLboolean Ready
; /**< result is ready? */
2056 * Context state for query objects.
2058 struct gl_query_state
2060 struct _mesa_HashTable
*QueryObjects
;
2061 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2062 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2064 /** GL_NV_conditional_render */
2065 struct gl_query_object
*CondRenderQuery
;
2067 /** GL_EXT_transform_feedback */
2068 struct gl_query_object
*PrimitivesGenerated
;
2069 struct gl_query_object
*PrimitivesWritten
;
2071 /** GL_ARB_timer_query */
2072 struct gl_query_object
*TimeElapsed
;
2074 GLenum CondRenderMode
;
2078 /** Sync object state */
2079 struct gl_sync_object
{
2080 struct simple_node link
;
2081 GLenum Type
; /**< GL_SYNC_FENCE */
2082 GLuint Name
; /**< Fence name */
2083 GLint RefCount
; /**< Reference count */
2084 GLboolean DeletePending
; /**< Object was deleted while there were still
2085 * live references (e.g., sync not yet finished)
2087 GLenum SyncCondition
;
2088 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2089 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2093 /** Set by #pragma directives */
2094 struct gl_sl_pragmas
2096 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2097 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2098 GLboolean Optimize
; /**< defaults on */
2099 GLboolean Debug
; /**< defaults off */
2104 * A GLSL vertex or fragment shader object.
2108 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2109 GLuint Name
; /**< AKA the handle */
2110 GLint RefCount
; /**< Reference count */
2111 GLboolean DeletePending
;
2112 GLboolean CompileStatus
;
2113 const GLchar
*Source
; /**< Source code string */
2114 GLuint SourceChecksum
; /**< for debug/logging purposes */
2115 struct gl_program
*Program
; /**< Post-compile assembly code */
2117 struct gl_sl_pragmas Pragmas
;
2119 unsigned Version
; /**< GLSL version used for linking */
2121 struct exec_list
*ir
;
2122 struct glsl_symbol_table
*symbols
;
2124 /** Shaders containing built-in functions that are used for linking. */
2125 struct gl_shader
*builtins_to_link
[16];
2126 unsigned num_builtins_to_link
;
2131 * A GLSL program object.
2132 * Basically a linked collection of vertex and fragment shaders.
2134 struct gl_shader_program
2136 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2137 GLuint Name
; /**< aka handle or ID */
2138 GLint RefCount
; /**< Reference count */
2139 GLboolean DeletePending
;
2141 GLuint NumShaders
; /**< number of attached shaders */
2142 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2145 * User-defined attribute bindings
2147 * These are set via \c glBindAttribLocation and are used to direct the
2148 * GLSL linker. These are \b not the values used in the compiled shader,
2149 * and they are \b not the values returned by \c glGetAttribLocation.
2151 struct string_to_uint_map
*AttributeBindings
;
2153 /** Transform feedback varyings */
2157 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2158 } TransformFeedback
;
2160 /** Geometry shader state - copied into gl_geometry_program at link time */
2163 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2164 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2165 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2168 /** Vertex shader state - copied into gl_vertex_program at link time */
2170 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2173 /* post-link info: */
2174 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2175 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2176 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2177 struct gl_uniform_list
*Uniforms
;
2178 struct gl_program_parameter_list
*Varying
;
2179 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2180 GLboolean Validated
;
2181 GLboolean _Used
; /**< Ever used for drawing? */
2184 unsigned Version
; /**< GLSL version used for linking */
2187 * Per-stage shaders resulting from the first stage of linking.
2189 * Set of linked shaders for this program. The array is accessed using the
2190 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2193 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2197 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2198 #define GLSL_LOG 0x2 /**< Write shaders to files */
2199 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2200 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2201 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2202 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2203 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2204 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2208 * Context state for GLSL vertex/fragment shaders.
2210 struct gl_shader_state
2213 * Programs used for rendering
2215 * There is a separate program set for each shader stage. If
2216 * GL_EXT_separate_shader_objects is not supported, each of these must point
2217 * to \c NULL or to the same program.
2219 struct gl_shader_program
*CurrentVertexProgram
;
2220 struct gl_shader_program
*CurrentGeometryProgram
;
2221 struct gl_shader_program
*CurrentFragmentProgram
;
2224 * Program used by glUniform calls.
2226 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2228 struct gl_shader_program
*ActiveProgram
;
2230 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2234 * Compiler options for a single GLSL shaders type
2236 struct gl_shader_compiler_options
2238 /** Driver-selectable options: */
2239 GLboolean EmitCondCodes
; /**< Use condition codes? */
2240 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2241 GLboolean EmitNoLoops
;
2242 GLboolean EmitNoFunctions
;
2243 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2244 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2245 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2246 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2247 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2250 * \name Forms of indirect addressing the driver cannot do.
2253 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2254 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2255 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2256 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2259 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2260 GLuint MaxUnrollIterations
;
2262 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2266 * Transform feedback object state
2268 struct gl_transform_feedback_object
2270 GLuint Name
; /**< AKA the object ID */
2272 GLboolean Active
; /**< Is transform feedback enabled? */
2273 GLboolean Paused
; /**< Is transform feedback paused? */
2275 /** The feedback buffers */
2276 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2277 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2279 /** Start of feedback data in dest buffer */
2280 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2281 /** Max data to put into dest buffer (in bytes) */
2282 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2287 * Context state for transform feedback.
2289 struct gl_transform_feedback
2291 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2293 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2295 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2296 struct gl_buffer_object
*CurrentBuffer
;
2298 /** The table of all transform feedback objects */
2299 struct _mesa_HashTable
*Objects
;
2301 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2302 struct gl_transform_feedback_object
*CurrentObject
;
2304 /** The default xform-fb object (Name==0) */
2305 struct gl_transform_feedback_object
*DefaultObject
;
2311 * State which can be shared by multiple contexts:
2313 struct gl_shared_state
2315 _glthread_Mutex Mutex
; /**< for thread safety */
2316 GLint RefCount
; /**< Reference count */
2317 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2318 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2320 /** Default texture objects (shared by all texture units) */
2321 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2323 /** Fallback texture used when a bound texture is incomplete */
2324 struct gl_texture_object
*FallbackTex
;
2327 * \name Thread safety and statechange notification for texture
2330 * \todo Improve the granularity of locking.
2333 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2334 GLuint TextureStateStamp
; /**< state notification for shared tex */
2337 /** Default buffer object for vertex arrays that aren't in VBOs */
2338 struct gl_buffer_object
*NullBufferObj
;
2341 * \name Vertex/geometry/fragment programs
2344 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2345 struct gl_vertex_program
*DefaultVertexProgram
;
2346 struct gl_fragment_program
*DefaultFragmentProgram
;
2347 struct gl_geometry_program
*DefaultGeometryProgram
;
2350 /* GL_ATI_fragment_shader */
2351 struct _mesa_HashTable
*ATIShaders
;
2352 struct ati_fragment_shader
*DefaultFragmentShader
;
2354 struct _mesa_HashTable
*BufferObjects
;
2356 /** Table of both gl_shader and gl_shader_program objects */
2357 struct _mesa_HashTable
*ShaderObjects
;
2359 /* GL_EXT_framebuffer_object */
2360 struct _mesa_HashTable
*RenderBuffers
;
2361 struct _mesa_HashTable
*FrameBuffers
;
2364 struct simple_node SyncObjects
;
2366 /** GL_ARB_sampler_objects */
2367 struct _mesa_HashTable
*SamplerObjects
;
2369 void *DriverData
; /**< Device driver shared state */
2376 * A renderbuffer stores colors or depth values or stencil values.
2377 * A framebuffer object will have a collection of these.
2378 * Data are read/written to the buffer with a handful of Get/Put functions.
2380 * Instances of this object are allocated with the Driver's NewRenderbuffer
2381 * hook. Drivers will likely wrap this class inside a driver-specific
2382 * class to simulate inheritance.
2384 struct gl_renderbuffer
2386 _glthread_Mutex Mutex
; /**< for thread safety */
2387 GLuint ClassID
; /**< Useful for drivers */
2390 GLuint Width
, Height
;
2391 GLint RowStride
; /**< Padded width in units of pixels */
2392 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2394 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2398 GLenum InternalFormat
; /**< The user-specified format */
2399 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2400 GL_STENCIL_INDEX. */
2401 gl_format Format
; /**< The actual renderbuffer memory format */
2403 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2404 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2406 /* Used to wrap one renderbuffer around another: */
2407 struct gl_renderbuffer
*Wrapped
;
2409 /* Delete this renderbuffer */
2410 void (*Delete
)(struct gl_renderbuffer
*rb
);
2412 /* Allocate new storage for this renderbuffer */
2413 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2414 GLenum internalFormat
,
2415 GLuint width
, GLuint height
);
2417 /* Lock/Unlock are called before/after calling the Get/Put functions.
2418 * Not sure this is the right place for these yet.
2419 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2420 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2423 /* Return a pointer to the element/pixel at (x,y).
2424 * Should return NULL if the buffer memory can't be directly addressed.
2426 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2429 /* Get/Read a row of values.
2430 * The values will be of format _BaseFormat and type DataType.
2432 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2433 GLint x
, GLint y
, void *values
);
2435 /* Get/Read values at arbitrary locations.
2436 * The values will be of format _BaseFormat and type DataType.
2438 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2439 const GLint x
[], const GLint y
[], void *values
);
2441 /* Put/Write a row of values.
2442 * The values will be of format _BaseFormat and type DataType.
2444 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2445 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2447 /* Put/Write a row of RGB values. This is a special-case routine that's
2448 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2449 * a common case for glDrawPixels and some triangle routines.
2450 * The values will be of format GL_RGB and type DataType.
2452 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2453 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2456 /* Put/Write a row of identical values.
2457 * The values will be of format _BaseFormat and type DataType.
2459 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2460 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2462 /* Put/Write values at arbitrary locations.
2463 * The values will be of format _BaseFormat and type DataType.
2465 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2466 const GLint x
[], const GLint y
[], const void *values
,
2467 const GLubyte
*mask
);
2468 /* Put/Write identical values at arbitrary locations.
2469 * The values will be of format _BaseFormat and type DataType.
2471 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2472 GLuint count
, const GLint x
[], const GLint y
[],
2473 const void *value
, const GLubyte
*mask
);
2478 * A renderbuffer attachment points to either a texture object (and specifies
2479 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2481 struct gl_renderbuffer_attachment
2483 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2487 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2488 * application supplied renderbuffer object.
2490 struct gl_renderbuffer
*Renderbuffer
;
2493 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2494 * supplied texture object.
2496 struct gl_texture_object
*Texture
;
2497 GLuint TextureLevel
; /**< Attached mipmap level. */
2498 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2499 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2500 * and 2D array textures */
2505 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2506 * In C++ terms, think of this as a base class from which device drivers
2507 * will make derived classes.
2509 struct gl_framebuffer
2511 _glthread_Mutex Mutex
; /**< for thread safety */
2513 * If zero, this is a window system framebuffer. If non-zero, this
2514 * is a FBO framebuffer; note that for some devices (i.e. those with
2515 * a natural pixel coordinate system for FBOs that differs from the
2516 * OpenGL/Mesa coordinate system), this means that the viewport,
2517 * polygon face orientation, and polygon stipple will have to be inverted.
2522 GLboolean DeletePending
;
2525 * The framebuffer's visual. Immutable if this is a window system buffer.
2526 * Computed from attachments if user-made FBO.
2528 struct gl_config Visual
;
2530 GLboolean Initialized
;
2532 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2534 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2536 GLint _Xmin
, _Xmax
; /**< inclusive */
2537 GLint _Ymin
, _Ymax
; /**< exclusive */
2540 /** \name Derived Z buffer stuff */
2542 GLuint _DepthMax
; /**< Max depth buffer value */
2543 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2544 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2547 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2550 /** Integer color values */
2551 GLboolean _IntegerColor
;
2553 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2554 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2556 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2557 * attribute group and GL_PIXEL attribute group, respectively.
2559 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2560 GLenum ColorReadBuffer
;
2562 /** Computed from ColorDraw/ReadBuffer above */
2563 GLuint _NumColorDrawBuffers
;
2564 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2565 GLint _ColorReadBufferIndex
; /* -1 = None */
2566 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2567 struct gl_renderbuffer
*_ColorReadBuffer
;
2569 /** The Actual depth/stencil buffers to use. May be wrappers around the
2570 * depth/stencil buffers attached above. */
2571 struct gl_renderbuffer
*_DepthBuffer
;
2572 struct gl_renderbuffer
*_StencilBuffer
;
2574 /** Delete this framebuffer */
2575 void (*Delete
)(struct gl_framebuffer
*fb
);
2580 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2584 GLushort RangeMin
; /**< min value exponent */
2585 GLushort RangeMax
; /**< max value exponent */
2586 GLushort Precision
; /**< number of mantissa bits */
2591 * Limits for vertex, geometry and fragment programs/shaders.
2593 struct gl_program_constants
2595 /* logical limits */
2596 GLuint MaxInstructions
;
2597 GLuint MaxAluInstructions
;
2598 GLuint MaxTexInstructions
;
2599 GLuint MaxTexIndirections
;
2602 GLuint MaxAddressRegs
;
2603 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2604 GLuint MaxParameters
;
2605 GLuint MaxLocalParams
;
2606 GLuint MaxEnvParams
;
2607 /* native/hardware limits */
2608 GLuint MaxNativeInstructions
;
2609 GLuint MaxNativeAluInstructions
;
2610 GLuint MaxNativeTexInstructions
;
2611 GLuint MaxNativeTexIndirections
;
2612 GLuint MaxNativeAttribs
;
2613 GLuint MaxNativeTemps
;
2614 GLuint MaxNativeAddressRegs
;
2615 GLuint MaxNativeParameters
;
2617 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2618 /* ES 2.0 and GL_ARB_ES2_compatibility */
2619 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2620 struct gl_precision LowInt
, MediumInt
, HighInt
;
2625 * Constants which may be overridden by device driver during context creation
2626 * but are never changed after that.
2630 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2631 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2632 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2633 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2634 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2635 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2636 GLuint MaxTextureCoordUnits
;
2637 GLuint MaxTextureImageUnits
;
2638 GLuint MaxVertexTextureImageUnits
;
2639 GLuint MaxCombinedTextureImageUnits
;
2640 GLuint MaxGeometryTextureImageUnits
;
2641 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2642 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2643 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2644 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2646 GLuint MaxArrayLockSize
;
2650 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2651 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2652 GLfloat PointSizeGranularity
;
2653 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2654 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2655 GLfloat LineWidthGranularity
;
2657 GLuint MaxColorTableSize
;
2659 GLuint MaxClipPlanes
;
2661 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2662 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2664 GLuint MaxViewportWidth
, MaxViewportHeight
;
2666 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2667 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2668 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2669 GLuint MaxProgramMatrices
;
2670 GLuint MaxProgramMatrixStackDepth
;
2672 /** vertex array / buffer object bounds checking */
2673 GLboolean CheckArrayBounds
;
2675 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2677 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2678 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2679 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2681 /** Number of varying vectors between vertex and fragment shaders */
2683 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2684 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2686 /** GL_ARB_geometry_shader4 */
2687 GLuint MaxGeometryOutputVertices
;
2688 GLuint MaxGeometryTotalOutputComponents
;
2690 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2693 * Does the driver support real 32-bit integers? (Otherwise, integers are
2694 * simulated via floats.)
2696 GLboolean NativeIntegers
;
2699 * If the driver supports real 32-bit integers, what integer value should be
2700 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2702 GLuint UniformBooleanTrue
;
2704 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2705 GLbitfield SupportedBumpUnits
;
2708 * Maximum amount of time, measured in nanseconds, that the server can wait.
2710 GLuint64 MaxServerWaitTimeout
;
2712 /** GL_EXT_provoking_vertex */
2713 GLboolean QuadsFollowProvokingVertexConvention
;
2715 /** OpenGL version 3.0 */
2716 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2718 /** OpenGL version 3.2 */
2719 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2721 /** GL_EXT_transform_feedback */
2722 GLuint MaxTransformFeedbackSeparateAttribs
;
2723 GLuint MaxTransformFeedbackSeparateComponents
;
2724 GLuint MaxTransformFeedbackInterleavedComponents
;
2726 /** GL_EXT_gpu_shader4 */
2727 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2729 /* GL_EXT_framebuffer_sRGB */
2730 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2732 /* GL_ARB_robustness */
2733 GLenum ResetStrategy
;
2738 * Enable flag for each OpenGL extension. Different device drivers will
2739 * enable different extensions at runtime.
2741 struct gl_extensions
2743 GLboolean dummy
; /* don't remove this! */
2744 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2745 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2746 GLboolean ARB_ES2_compatibility
;
2747 GLboolean ARB_blend_func_extended
;
2748 GLboolean ARB_color_buffer_float
;
2749 GLboolean ARB_copy_buffer
;
2750 GLboolean ARB_depth_buffer_float
;
2751 GLboolean ARB_depth_clamp
;
2752 GLboolean ARB_depth_texture
;
2753 GLboolean ARB_draw_buffers_blend
;
2754 GLboolean ARB_draw_elements_base_vertex
;
2755 GLboolean ARB_draw_instanced
;
2756 GLboolean ARB_fragment_coord_conventions
;
2757 GLboolean ARB_fragment_program
;
2758 GLboolean ARB_fragment_program_shadow
;
2759 GLboolean ARB_fragment_shader
;
2760 GLboolean ARB_framebuffer_object
;
2761 GLboolean ARB_explicit_attrib_location
;
2762 GLboolean ARB_geometry_shader4
;
2763 GLboolean ARB_half_float_pixel
;
2764 GLboolean ARB_half_float_vertex
;
2765 GLboolean ARB_instanced_arrays
;
2766 GLboolean ARB_map_buffer_range
;
2767 GLboolean ARB_occlusion_query
;
2768 GLboolean ARB_occlusion_query2
;
2769 GLboolean ARB_point_sprite
;
2770 GLboolean ARB_sampler_objects
;
2771 GLboolean ARB_seamless_cube_map
;
2772 GLboolean ARB_shader_objects
;
2773 GLboolean ARB_shader_stencil_export
;
2774 GLboolean ARB_shader_texture_lod
;
2775 GLboolean ARB_shading_language_100
;
2776 GLboolean ARB_shadow
;
2777 GLboolean ARB_shadow_ambient
;
2779 GLboolean ARB_texture_border_clamp
;
2780 GLboolean ARB_texture_buffer_object
;
2781 GLboolean ARB_texture_compression_rgtc
;
2782 GLboolean ARB_texture_cube_map
;
2783 GLboolean ARB_texture_env_combine
;
2784 GLboolean ARB_texture_env_crossbar
;
2785 GLboolean ARB_texture_env_dot3
;
2786 GLboolean ARB_texture_float
;
2787 GLboolean ARB_texture_multisample
;
2788 GLboolean ARB_texture_non_power_of_two
;
2789 GLboolean ARB_texture_rg
;
2790 GLboolean ARB_texture_rgb10_a2ui
;
2791 GLboolean ARB_timer_query
;
2792 GLboolean ARB_transform_feedback2
;
2793 GLboolean ARB_transpose_matrix
;
2794 GLboolean ARB_uniform_buffer_object
;
2795 GLboolean ARB_vertex_array_object
;
2796 GLboolean ARB_vertex_program
;
2797 GLboolean ARB_vertex_shader
;
2798 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2799 GLboolean ARB_window_pos
;
2800 GLboolean EXT_blend_color
;
2801 GLboolean EXT_blend_equation_separate
;
2802 GLboolean EXT_blend_func_separate
;
2803 GLboolean EXT_blend_minmax
;
2804 GLboolean EXT_clip_volume_hint
;
2805 GLboolean EXT_compiled_vertex_array
;
2806 GLboolean EXT_depth_bounds_test
;
2807 GLboolean EXT_draw_buffers2
;
2808 GLboolean EXT_draw_range_elements
;
2809 GLboolean EXT_fog_coord
;
2810 GLboolean EXT_framebuffer_blit
;
2811 GLboolean EXT_framebuffer_multisample
;
2812 GLboolean EXT_framebuffer_object
;
2813 GLboolean EXT_framebuffer_sRGB
;
2814 GLboolean EXT_gpu_program_parameters
;
2815 GLboolean EXT_gpu_shader4
;
2816 GLboolean EXT_packed_depth_stencil
;
2817 GLboolean EXT_packed_float
;
2818 GLboolean EXT_packed_pixels
;
2819 GLboolean EXT_pixel_buffer_object
;
2820 GLboolean EXT_point_parameters
;
2821 GLboolean EXT_provoking_vertex
;
2822 GLboolean EXT_rescale_normal
;
2823 GLboolean EXT_shadow_funcs
;
2824 GLboolean EXT_secondary_color
;
2825 GLboolean EXT_separate_shader_objects
;
2826 GLboolean EXT_separate_specular_color
;
2827 GLboolean EXT_stencil_two_side
;
2828 GLboolean EXT_texture3D
;
2829 GLboolean EXT_texture_array
;
2830 GLboolean EXT_texture_compression_latc
;
2831 GLboolean EXT_texture_compression_s3tc
;
2832 GLboolean EXT_texture_env_dot3
;
2833 GLboolean EXT_texture_filter_anisotropic
;
2834 GLboolean EXT_texture_integer
;
2835 GLboolean EXT_texture_mirror_clamp
;
2836 GLboolean EXT_texture_shared_exponent
;
2837 GLboolean EXT_texture_snorm
;
2838 GLboolean EXT_texture_sRGB
;
2839 GLboolean EXT_texture_sRGB_decode
;
2840 GLboolean EXT_texture_swizzle
;
2841 GLboolean EXT_transform_feedback
;
2842 GLboolean EXT_timer_query
;
2843 GLboolean EXT_vertex_array_bgra
;
2844 GLboolean OES_standard_derivatives
;
2845 /* vendor extensions */
2846 GLboolean AMD_conservative_depth
;
2847 GLboolean AMD_seamless_cubemap_per_texture
;
2848 GLboolean APPLE_packed_pixels
;
2849 GLboolean APPLE_vertex_array_object
;
2850 GLboolean APPLE_object_purgeable
;
2851 GLboolean ATI_envmap_bumpmap
;
2852 GLboolean ATI_texture_compression_3dc
;
2853 GLboolean ATI_texture_mirror_once
;
2854 GLboolean ATI_texture_env_combine3
;
2855 GLboolean ATI_fragment_shader
;
2856 GLboolean ATI_separate_stencil
;
2857 GLboolean IBM_rasterpos_clip
;
2858 GLboolean IBM_multimode_draw_arrays
;
2859 GLboolean MESA_pack_invert
;
2860 GLboolean MESA_resize_buffers
;
2861 GLboolean MESA_ycbcr_texture
;
2862 GLboolean MESA_texture_array
;
2863 GLboolean NV_blend_square
;
2864 GLboolean NV_conditional_render
;
2865 GLboolean NV_fragment_program
;
2866 GLboolean NV_fragment_program_option
;
2867 GLboolean NV_light_max_exponent
;
2868 GLboolean NV_point_sprite
;
2869 GLboolean NV_primitive_restart
;
2870 GLboolean NV_texture_barrier
;
2871 GLboolean NV_texgen_reflection
;
2872 GLboolean NV_texture_env_combine4
;
2873 GLboolean NV_texture_rectangle
;
2874 GLboolean NV_vertex_program
;
2875 GLboolean NV_vertex_program1_1
;
2876 GLboolean SGIS_texture_lod
;
2877 GLboolean TDFX_texture_compression_FXT1
;
2879 GLboolean OES_EGL_image
;
2880 GLboolean OES_draw_texture
;
2881 GLboolean extension_sentinel
;
2882 /** The extension string */
2883 const GLubyte
*String
;
2884 /** Number of supported extensions */
2890 * A stack of matrices (projection, modelview, color, texture, etc).
2892 struct gl_matrix_stack
2894 GLmatrix
*Top
; /**< points into Stack */
2895 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2896 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2897 GLuint MaxDepth
; /**< size of Stack[] array */
2898 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2903 * \name Bits for image transfer operations
2904 * \sa __struct gl_contextRec::ImageTransferState.
2907 #define IMAGE_SCALE_BIAS_BIT 0x1
2908 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2909 #define IMAGE_MAP_COLOR_BIT 0x4
2910 #define IMAGE_CLAMP_BIT 0x800
2913 /** Pixel Transfer ops */
2914 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2915 IMAGE_SHIFT_OFFSET_BIT | \
2916 IMAGE_MAP_COLOR_BIT)
2919 * \name Bits to indicate what state has changed.
2922 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2923 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2924 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2925 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2926 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2927 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2928 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2929 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2930 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2931 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2932 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2933 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2934 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2935 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2936 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2937 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2938 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2939 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2940 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2941 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2942 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2943 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2944 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2945 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2946 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2947 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2948 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2949 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2950 #define _NEW_BUFFER_OBJECT (1 << 28)
2951 #define _NEW_FRAG_CLAMP (1 << 29)
2957 * \name Bits to track array state changes
2959 * Also used to summarize array enabled.
2962 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2963 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2964 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2965 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2966 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2967 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2968 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2969 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2970 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2971 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2972 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2973 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2974 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2975 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2976 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2977 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2978 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2979 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2980 #define _NEW_ARRAY_ALL 0xffffffff
2983 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2984 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2990 * \name A bunch of flags that we think might be useful to drivers.
2992 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
2995 #define DD_FLATSHADE 0x1
2996 #define DD_SEPARATE_SPECULAR 0x2
2997 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2998 #define DD_TRI_LIGHT_TWOSIDE 0x8
2999 #define DD_TRI_UNFILLED 0x10
3000 #define DD_TRI_SMOOTH 0x20
3001 #define DD_TRI_STIPPLE 0x40
3002 #define DD_TRI_OFFSET 0x80
3003 #define DD_LINE_SMOOTH 0x100
3004 #define DD_LINE_STIPPLE 0x200
3005 #define DD_POINT_SMOOTH 0x400
3006 #define DD_POINT_ATTEN 0x800
3007 #define DD_TRI_TWOSTENCIL 0x1000
3012 * \name Define the state changes under which each of these bits might change
3015 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3016 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3017 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3018 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3019 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3020 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3021 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3022 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3023 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3024 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3025 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3026 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3027 #define _DD_NEW_POINT_SIZE _NEW_POINT
3028 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3033 * Composite state flags
3036 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3046 /* This has to be included here. */
3051 * Display list flags.
3052 * Strictly this is a tnl-private concept, but it doesn't seem
3053 * worthwhile adding a tnl private structure just to hold this one bit
3056 #define DLIST_DANGLING_REFS 0x1
3059 /** Opaque declaration of display list payload data type */
3060 union gl_dlist_node
;
3064 * Provide a location where information about a display list can be
3065 * collected. Could be extended with driverPrivate structures,
3066 * etc. in the future.
3068 struct gl_display_list
3071 GLbitfield Flags
; /**< DLIST_x flags */
3072 /** The dlist commands are in a linked list of nodes */
3073 union gl_dlist_node
*Head
;
3078 * State used during display list compilation and execution.
3080 struct gl_dlist_state
3082 GLuint CallDepth
; /**< Current recursion calling depth */
3084 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3085 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3086 GLuint CurrentPos
; /**< Index into current block of nodes */
3088 GLvertexformat ListVtxfmt
;
3090 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3091 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3093 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3094 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3096 GLubyte ActiveIndex
;
3097 GLfloat CurrentIndex
;
3099 GLubyte ActiveEdgeFlag
;
3100 GLboolean CurrentEdgeFlag
;
3103 /* State known to have been set by the currently-compiling display
3104 * list. Used to eliminate some redundant state changes.
3112 * Enum for the OpenGL APIs we know about and may support.
3123 * Mesa rendering context.
3125 * This is the central context data structure for Mesa. Almost all
3126 * OpenGL state is contained in this structure.
3127 * Think of this as a base class from which device drivers will derive
3130 * The struct gl_context typedef names this structure.
3134 /** State possibly shared with other contexts in the address space */
3135 struct gl_shared_state
*Shared
;
3137 /** \name API function pointer tables */
3140 struct _glapi_table
*Save
; /**< Display list save functions */
3141 struct _glapi_table
*Exec
; /**< Execute functions */
3142 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3145 struct gl_config Visual
;
3146 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3147 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3148 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3149 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3152 * Device driver function pointer table
3154 struct dd_function_table Driver
;
3156 void *DriverCtx
; /**< Points to device driver context/state */
3158 /** Core/Driver constants */
3159 struct gl_constants Const
;
3161 /** \name The various 4x4 matrix stacks */
3163 struct gl_matrix_stack ModelviewMatrixStack
;
3164 struct gl_matrix_stack ProjectionMatrixStack
;
3165 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3166 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3167 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3170 /** Combined modelview and projection matrix */
3171 GLmatrix _ModelProjectMatrix
;
3173 /** \name Display lists */
3174 struct gl_dlist_state ListState
;
3176 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3177 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3179 /** Extension information */
3180 struct gl_extensions Extensions
;
3183 GLuint VersionMajor
, VersionMinor
;
3184 char *VersionString
;
3186 /** \name State attribute stack (for glPush/PopAttrib) */
3188 GLuint AttribStackDepth
;
3189 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3192 /** \name Renderer attribute groups
3194 * We define a struct for each attribute group to make pushing and popping
3195 * attributes easy. Also it's a good organization.
3198 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3199 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3200 struct gl_current_attrib Current
; /**< Current attributes */
3201 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3202 struct gl_eval_attrib Eval
; /**< Eval attributes */
3203 struct gl_fog_attrib Fog
; /**< Fog attributes */
3204 struct gl_hint_attrib Hint
; /**< Hint attributes */
3205 struct gl_light_attrib Light
; /**< Light attributes */
3206 struct gl_line_attrib Line
; /**< Line attributes */
3207 struct gl_list_attrib List
; /**< List attributes */
3208 struct gl_multisample_attrib Multisample
;
3209 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3210 struct gl_point_attrib Point
; /**< Point attributes */
3211 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3212 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3213 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3214 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3215 struct gl_texture_attrib Texture
; /**< Texture attributes */
3216 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3217 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3220 /** \name Client attribute stack */
3222 GLuint ClientAttribStackDepth
;
3223 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3226 /** \name Client attribute groups */
3228 struct gl_array_attrib Array
; /**< Vertex arrays */
3229 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3230 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3231 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3234 /** \name Other assorted state (not pushed/popped on attribute stack) */
3236 struct gl_pixelmaps PixelMaps
;
3238 struct gl_evaluators EvalMap
; /**< All evaluators */
3239 struct gl_feedback Feedback
; /**< Feedback */
3240 struct gl_selection Select
; /**< Selection */
3242 struct gl_program_state Program
; /**< general program state */
3243 struct gl_vertex_program_state VertexProgram
;
3244 struct gl_fragment_program_state FragmentProgram
;
3245 struct gl_geometry_program_state GeometryProgram
;
3246 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3248 struct gl_shader_state Shader
; /**< GLSL shader object state */
3249 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3251 struct gl_query_state Query
; /**< occlusion, timer queries */
3253 struct gl_transform_feedback TransformFeedback
;
3255 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3256 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3259 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3261 /* GL_EXT_framebuffer_object */
3262 struct gl_renderbuffer
*CurrentRenderbuffer
;
3264 GLenum ErrorValue
; /**< Last error code */
3266 /* GL_ARB_robustness */
3270 * Recognize and silence repeated error debug messages in buggy apps.
3272 const char *ErrorDebugFmtString
;
3273 GLuint ErrorDebugCount
;
3275 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3276 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3278 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3280 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3282 /** \name Derived state */
3284 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3285 * state validation so they need to always be current.
3287 GLbitfield _TriangleCaps
;
3288 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3289 GLfloat _EyeZDir
[3];
3290 GLfloat _ModelViewInvScale
;
3291 GLboolean _NeedEyeCoords
;
3292 GLboolean _ForceEyeCoords
;
3294 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3296 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3297 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3300 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3302 /** \name For debugging/development only */
3304 GLboolean FirstTimeCurrent
;
3307 /** software compression/decompression supported or not */
3308 GLboolean Mesa_DXTn
;
3310 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3313 * Use dp4 (rather than mul/mad) instructions for position
3316 GLboolean mvp_with_dp4
;
3319 * \name Hooks for module contexts.
3321 * These will eventually live in the driver or elsewhere.
3324 void *swrast_context
;
3325 void *swsetup_context
;
3326 void *swtnl_context
;
3328 struct st_context
*st
;
3335 extern int MESA_VERBOSE
;
3336 extern int MESA_DEBUG_FLAGS
;
3337 # define MESA_FUNCTION __FUNCTION__
3339 # define MESA_VERBOSE 0
3340 # define MESA_DEBUG_FLAGS 0
3341 # define MESA_FUNCTION "a function"
3348 /** The MESA_VERBOSE var is a bitmask of these flags */
3351 VERBOSE_VARRAY
= 0x0001,
3352 VERBOSE_TEXTURE
= 0x0002,
3353 VERBOSE_MATERIAL
= 0x0004,
3354 VERBOSE_PIPELINE
= 0x0008,
3355 VERBOSE_DRIVER
= 0x0010,
3356 VERBOSE_STATE
= 0x0020,
3357 VERBOSE_API
= 0x0040,
3358 VERBOSE_DISPLAY_LIST
= 0x0100,
3359 VERBOSE_LIGHTING
= 0x0200,
3360 VERBOSE_PRIMS
= 0x0400,
3361 VERBOSE_VERTS
= 0x0800,
3362 VERBOSE_DISASSEM
= 0x1000,
3363 VERBOSE_DRAW
= 0x2000,
3364 VERBOSE_SWAPBUFFERS
= 0x4000
3368 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3371 DEBUG_ALWAYS_FLUSH
= 0x1
3376 #endif /* MTYPES_H */