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. Drivers will typically create a subclass of this
1235 * with extra fields for memory buffers, etc.
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 */
1268 * Indexes for cube map faces.
1283 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1284 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1286 struct gl_sampler_object
1291 GLenum WrapS
; /**< S-axis texture image wrap mode */
1292 GLenum WrapT
; /**< T-axis texture image wrap mode */
1293 GLenum WrapR
; /**< R-axis texture image wrap mode */
1294 GLenum MinFilter
; /**< minification filter */
1295 GLenum MagFilter
; /**< magnification filter */
1296 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1297 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1298 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1299 GLfloat LodBias
; /**< OpenGL 1.4 */
1300 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1301 GLenum CompareMode
; /**< GL_ARB_shadow */
1302 GLenum CompareFunc
; /**< GL_ARB_shadow */
1303 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1304 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1305 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1307 /* deprecated sampler state */
1308 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1313 * Texture object state. Contains the array of mipmap images, border color,
1314 * wrap modes, filter modes, and shadow/texcompare state.
1316 struct gl_texture_object
1318 _glthread_Mutex Mutex
; /**< for thread safety */
1319 GLint RefCount
; /**< reference count */
1320 GLuint Name
; /**< the user-visible texture object ID */
1321 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1323 struct gl_sampler_object Sampler
;
1325 GLfloat Priority
; /**< in [0,1] */
1326 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1327 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1328 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1329 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1330 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1331 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1332 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1333 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1334 GLboolean _Complete
; /**< Is texture object complete? */
1335 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1336 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1338 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1339 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1341 /** GL_ARB_texture_buffer_object */
1342 struct gl_buffer_object
*BufferObject
;
1343 GLenum BufferObjectFormat
;
1346 * \name For device driver.
1347 * Note: instead of attaching driver data to this pointer, it's preferable
1348 * to instead use this struct as a base class for your own texture object
1349 * class. Driver->NewTextureObject() can be used to implement the
1352 void *DriverData
; /**< Arbitrary device driver data */
1356 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1357 #define MAX_COMBINER_TERMS 4
1361 * Texture combine environment state.
1363 struct gl_tex_env_combine_state
1365 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1366 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1367 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1368 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1369 GLenum SourceA
[MAX_COMBINER_TERMS
];
1370 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1371 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1372 GLenum OperandA
[MAX_COMBINER_TERMS
];
1373 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1374 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1375 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1376 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1381 * Texture coord generation state.
1385 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1386 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1387 GLfloat ObjectPlane
[4];
1388 GLfloat EyePlane
[4];
1393 * Texture unit state. Contains enable flags, texture environment/function/
1394 * combiners, texgen state, and pointers to current texture objects.
1396 struct gl_texture_unit
1398 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1399 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1401 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1402 GLclampf EnvColor
[4];
1403 GLfloat EnvColorUnclamped
[4];
1405 struct gl_texgen GenS
;
1406 struct gl_texgen GenT
;
1407 struct gl_texgen GenR
;
1408 struct gl_texgen GenQ
;
1409 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1410 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1412 GLfloat LodBias
; /**< for biasing mipmap levels */
1414 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1416 /** Current sampler object (GL_ARB_sampler_objects) */
1417 struct gl_sampler_object
*Sampler
;
1420 * \name GL_EXT_texture_env_combine
1422 struct gl_tex_env_combine_state Combine
;
1425 * Derived state based on \c EnvMode and the \c BaseFormat of the
1426 * currently enabled texture.
1428 struct gl_tex_env_combine_state _EnvMode
;
1431 * Currently enabled combiner state. This will point to either
1432 * \c Combine or \c _EnvMode.
1434 struct gl_tex_env_combine_state
*_CurrentCombine
;
1436 /** Current texture object pointers */
1437 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1439 /** Points to highest priority, complete and enabled texture object */
1440 struct gl_texture_object
*_Current
;
1445 * Texture attribute group (GL_TEXTURE_BIT).
1447 struct gl_texture_attrib
1449 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1450 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1452 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1454 /** GL_ARB_texture_buffer_object */
1455 struct gl_buffer_object
*BufferObject
;
1457 /** GL_ARB_seamless_cubemap */
1458 GLboolean CubeMapSeamless
;
1460 /** Texture units/samplers used by vertex or fragment texturing */
1461 GLbitfield _EnabledUnits
;
1463 /** Texture coord units/sets used for fragment texturing */
1464 GLbitfield _EnabledCoordUnits
;
1466 /** Texture coord units that have texgen enabled */
1467 GLbitfield _TexGenEnabled
;
1469 /** Texture coord units that have non-identity matrices */
1470 GLbitfield _TexMatEnabled
;
1472 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1473 GLbitfield _GenFlags
;
1478 * Data structure representing a single clip plane (e.g. one of the elements
1479 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1481 typedef GLfloat gl_clip_plane
[4];
1485 * Transformation attribute group (GL_TRANSFORM_BIT).
1487 struct gl_transform_attrib
1489 GLenum MatrixMode
; /**< Matrix mode */
1490 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1491 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1492 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1493 GLboolean Normalize
; /**< Normalize all normals? */
1494 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1495 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1496 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1498 GLfloat CullEyePos
[4];
1499 GLfloat CullObjPos
[4];
1504 * Viewport attribute group (GL_VIEWPORT_BIT).
1506 struct gl_viewport_attrib
1508 GLint X
, Y
; /**< position */
1509 GLsizei Width
, Height
; /**< size */
1510 GLfloat Near
, Far
; /**< Depth buffer range */
1511 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1516 * GL_ARB_vertex/pixel_buffer_object buffer object
1518 struct gl_buffer_object
1520 _glthread_Mutex Mutex
;
1523 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1524 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1525 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1526 /** Fields describing a mapped buffer */
1528 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1529 GLvoid
*Pointer
; /**< User-space address of mapping */
1530 GLintptr Offset
; /**< Mapped offset */
1531 GLsizeiptr Length
; /**< Mapped length */
1533 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1534 GLboolean Written
; /**< Ever written to? (for debugging) */
1535 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1540 * Client pixel packing/unpacking attributes
1542 struct gl_pixelstore_attrib
1550 GLboolean SwapBytes
;
1552 GLboolean Invert
; /**< GL_MESA_pack_invert */
1553 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1558 * Client vertex array attributes
1560 struct gl_client_array
1562 GLint Size
; /**< components per element (1,2,3,4) */
1563 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1564 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1565 GLsizei Stride
; /**< user-specified stride */
1566 GLsizei StrideB
; /**< actual stride in bytes */
1567 const GLubyte
*Ptr
; /**< Points to array data */
1568 GLboolean Enabled
; /**< Enabled flag is a boolean */
1569 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1570 GLboolean Integer
; /**< Integer-valued? */
1571 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1572 GLuint _ElementSize
; /**< size of each element in bytes */
1574 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1575 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1580 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1581 * extension, but a nice encapsulation in any case.
1583 struct gl_array_object
1585 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1589 _glthread_Mutex Mutex
;
1590 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1592 /** Conventional vertex arrays */
1594 struct gl_client_array Vertex
;
1595 struct gl_client_array Weight
;
1596 struct gl_client_array Normal
;
1597 struct gl_client_array Color
;
1598 struct gl_client_array SecondaryColor
;
1599 struct gl_client_array FogCoord
;
1600 struct gl_client_array Index
;
1601 struct gl_client_array EdgeFlag
;
1602 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1603 struct gl_client_array PointSize
;
1607 * Generic arrays for vertex programs/shaders.
1608 * For NV vertex programs, these attributes alias and take priority
1609 * over the conventional attribs above. For ARB vertex programs and
1610 * GLSL vertex shaders, these attributes are separate.
1612 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1614 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1615 GLbitfield _Enabled
;
1618 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1619 * we can determine the max legal (in bounds) glDrawElements array index.
1626 * Vertex array state
1628 struct gl_array_attrib
1630 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1631 struct gl_array_object
*ArrayObj
;
1633 /** The default vertex array object */
1634 struct gl_array_object
*DefaultArrayObj
;
1636 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1637 struct _mesa_HashTable
*Objects
;
1639 GLint ActiveTexture
; /**< Client Active Texture */
1640 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1641 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1643 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1644 GLboolean PrimitiveRestart
;
1645 GLuint RestartIndex
;
1647 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1648 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1650 /* GL_ARB_vertex_buffer_object */
1651 struct gl_buffer_object
*ArrayBufferObj
;
1652 struct gl_buffer_object
*ElementArrayBufferObj
;
1657 * Feedback buffer state
1662 GLbitfield _Mask
; /**< FB_* bits */
1670 * Selection buffer state
1674 GLuint
*Buffer
; /**< selection buffer */
1675 GLuint BufferSize
; /**< size of the selection buffer */
1676 GLuint BufferCount
; /**< number of values in the selection buffer */
1677 GLuint Hits
; /**< number of records in the selection buffer */
1678 GLuint NameStackDepth
; /**< name stack depth */
1679 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1680 GLboolean HitFlag
; /**< hit flag */
1681 GLfloat HitMinZ
; /**< minimum hit depth */
1682 GLfloat HitMaxZ
; /**< maximum hit depth */
1687 * 1-D Evaluator control points
1691 GLuint Order
; /**< Number of control points */
1692 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1693 GLfloat
*Points
; /**< Points to contiguous control points */
1698 * 2-D Evaluator control points
1702 GLuint Uorder
; /**< Number of control points in U dimension */
1703 GLuint Vorder
; /**< Number of control points in V dimension */
1706 GLfloat
*Points
; /**< Points to contiguous control points */
1711 * All evaluator control point state
1713 struct gl_evaluators
1719 struct gl_1d_map Map1Vertex3
;
1720 struct gl_1d_map Map1Vertex4
;
1721 struct gl_1d_map Map1Index
;
1722 struct gl_1d_map Map1Color4
;
1723 struct gl_1d_map Map1Normal
;
1724 struct gl_1d_map Map1Texture1
;
1725 struct gl_1d_map Map1Texture2
;
1726 struct gl_1d_map Map1Texture3
;
1727 struct gl_1d_map Map1Texture4
;
1728 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1735 struct gl_2d_map Map2Vertex3
;
1736 struct gl_2d_map Map2Vertex4
;
1737 struct gl_2d_map Map2Index
;
1738 struct gl_2d_map Map2Color4
;
1739 struct gl_2d_map Map2Normal
;
1740 struct gl_2d_map Map2Texture1
;
1741 struct gl_2d_map Map2Texture2
;
1742 struct gl_2d_map Map2Texture3
;
1743 struct gl_2d_map Map2Texture4
;
1744 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1750 * Names of the various vertex/fragment program register files, etc.
1752 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1753 * All values should fit in a 4-bit field.
1755 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1756 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1757 * be "uniform" variables since they can only be set outside glBegin/End.
1758 * They're also all stored in the same Parameters array.
1762 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1763 PROGRAM_INPUT
, /**< machine->Inputs[] */
1764 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1765 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1766 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1767 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1768 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1769 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1770 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1771 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1772 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1773 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1774 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1775 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1776 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1782 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1783 * one of these values.
1787 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1788 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1789 SYSTEM_VALUE_MAX
/**< Number of values */
1794 * The possible interpolation qualifiers that can be applied to a fragment
1795 * shader input in GLSL.
1797 enum glsl_interp_qualifier
1799 INTERP_QUALIFIER_SMOOTH
,
1800 INTERP_QUALIFIER_FLAT
,
1801 INTERP_QUALIFIER_NOPERSPECTIVE
1805 /** Vertex and fragment instructions */
1806 struct prog_instruction
;
1807 struct gl_program_parameter_list
;
1808 struct gl_uniform_list
;
1812 * Base class for any kind of program object
1817 GLubyte
*String
; /**< Null-terminated program text */
1819 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1820 GLenum Format
; /**< String encoding format */
1823 struct prog_instruction
*Instructions
;
1825 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1826 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1827 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1828 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1829 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1830 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1831 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1832 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1835 /** Named parameters, constants, etc. from program text */
1836 struct gl_program_parameter_list
*Parameters
;
1837 /** Numbered local parameters */
1838 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1840 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1841 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1842 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1843 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1845 /** Bitmask of which register files are read/written with indirect
1846 * addressing. Mask of (1 << PROGRAM_x) bits.
1848 GLbitfield IndirectRegisterFiles
;
1850 /** Logical counts */
1852 GLuint NumInstructions
;
1853 GLuint NumTemporaries
;
1854 GLuint NumParameters
;
1855 GLuint NumAttributes
;
1856 GLuint NumAddressRegs
;
1857 GLuint NumAluInstructions
;
1858 GLuint NumTexInstructions
;
1859 GLuint NumTexIndirections
;
1861 /** Native, actual h/w counts */
1863 GLuint NumNativeInstructions
;
1864 GLuint NumNativeTemporaries
;
1865 GLuint NumNativeParameters
;
1866 GLuint NumNativeAttributes
;
1867 GLuint NumNativeAddressRegs
;
1868 GLuint NumNativeAluInstructions
;
1869 GLuint NumNativeTexInstructions
;
1870 GLuint NumNativeTexIndirections
;
1875 /** Vertex program object */
1876 struct gl_vertex_program
1878 struct gl_program Base
; /**< base class */
1879 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1880 GLboolean IsPositionInvariant
;
1881 GLboolean UsesClipDistance
;
1885 /** Geometry program object */
1886 struct gl_geometry_program
1888 struct gl_program Base
; /**< base class */
1891 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1892 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1893 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1897 /** Fragment program object */
1898 struct gl_fragment_program
1900 struct gl_program Base
; /**< base class */
1901 GLboolean UsesKill
; /**< shader uses KIL instruction */
1902 GLboolean OriginUpperLeft
;
1903 GLboolean PixelCenterInteger
;
1904 enum gl_frag_depth_layout FragDepthLayout
;
1907 * GLSL interpolation qualifier associated with each fragment shader input.
1908 * For inputs that do not have an interpolation qualifier specified in
1909 * GLSL, the value is INTERP_QUALIFIER_SMOOTH.
1911 enum glsl_interp_qualifier InterpQualifier
[FRAG_ATTRIB_MAX
];
1916 * State common to vertex and fragment programs.
1918 struct gl_program_state
1920 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1921 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1926 * Context state for vertex programs.
1928 struct gl_vertex_program_state
1930 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1931 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1932 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1933 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1934 /** Computed two sided lighting for fixed function/programs. */
1935 GLboolean _TwoSideEnabled
;
1936 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1938 /** Currently enabled and valid vertex program (including internal
1939 * programs, user-defined vertex programs and GLSL vertex shaders).
1940 * This is the program we must use when rendering.
1942 struct gl_vertex_program
*_Current
;
1944 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1946 /* For GL_NV_vertex_program only: */
1947 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1948 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1950 /** Should fixed-function T&L be implemented with a vertex prog? */
1951 GLboolean _MaintainTnlProgram
;
1953 /** Program to emulate fixed-function T&L (see above) */
1954 struct gl_vertex_program
*_TnlProgram
;
1956 /** Cache of fixed-function programs */
1957 struct gl_program_cache
*Cache
;
1959 GLboolean _Overriden
;
1964 * Context state for geometry programs.
1966 struct gl_geometry_program_state
1968 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1969 GLboolean _Enabled
; /**< Enabled and valid program? */
1970 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1972 /** Currently enabled and valid program (including internal programs
1973 * and compiled shader programs).
1975 struct gl_geometry_program
*_Current
;
1977 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1979 /** Cache of fixed-function programs */
1980 struct gl_program_cache
*Cache
;
1984 * Context state for fragment programs.
1986 struct gl_fragment_program_state
1988 GLboolean Enabled
; /**< User-set fragment program enable flag */
1989 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1990 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1992 /** Currently enabled and valid fragment program (including internal
1993 * programs, user-defined fragment programs and GLSL fragment shaders).
1994 * This is the program we must use when rendering.
1996 struct gl_fragment_program
*_Current
;
1998 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2000 /** Should fixed-function texturing be implemented with a fragment prog? */
2001 GLboolean _MaintainTexEnvProgram
;
2003 /** Program to emulate fixed-function texture env/combine (see above) */
2004 struct gl_fragment_program
*_TexEnvProgram
;
2006 /** Cache of fixed-function programs */
2007 struct gl_program_cache
*Cache
;
2012 * ATI_fragment_shader runtime state
2014 #define ATI_FS_INPUT_PRIMARY 0
2015 #define ATI_FS_INPUT_SECONDARY 1
2017 struct atifs_instruction
;
2018 struct atifs_setupinst
;
2021 * ATI fragment shader
2023 struct ati_fragment_shader
2027 struct atifs_instruction
*Instructions
[2];
2028 struct atifs_setupinst
*SetupInst
[2];
2029 GLfloat Constants
[8][4];
2030 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2031 GLubyte numArithInstr
[2];
2032 GLubyte regsAssigned
[2];
2033 GLubyte NumPasses
; /**< 1 or 2 */
2035 GLubyte last_optype
;
2036 GLboolean interpinp1
;
2042 * Context state for GL_ATI_fragment_shader
2044 struct gl_ati_fragment_shader_state
2047 GLboolean _Enabled
; /**< enabled and valid shader? */
2048 GLboolean Compiling
;
2049 GLfloat GlobalConstants
[8][4];
2050 struct ati_fragment_shader
*Current
;
2055 * Occlusion/timer query object.
2057 struct gl_query_object
2059 GLenum Target
; /**< The query target, when active */
2060 GLuint Id
; /**< hash table ID/name */
2061 GLuint64EXT Result
; /**< the counter */
2062 GLboolean Active
; /**< inside Begin/EndQuery */
2063 GLboolean Ready
; /**< result is ready? */
2068 * Context state for query objects.
2070 struct gl_query_state
2072 struct _mesa_HashTable
*QueryObjects
;
2073 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2074 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2076 /** GL_NV_conditional_render */
2077 struct gl_query_object
*CondRenderQuery
;
2079 /** GL_EXT_transform_feedback */
2080 struct gl_query_object
*PrimitivesGenerated
;
2081 struct gl_query_object
*PrimitivesWritten
;
2083 /** GL_ARB_timer_query */
2084 struct gl_query_object
*TimeElapsed
;
2086 GLenum CondRenderMode
;
2090 /** Sync object state */
2091 struct gl_sync_object
{
2092 struct simple_node link
;
2093 GLenum Type
; /**< GL_SYNC_FENCE */
2094 GLuint Name
; /**< Fence name */
2095 GLint RefCount
; /**< Reference count */
2096 GLboolean DeletePending
; /**< Object was deleted while there were still
2097 * live references (e.g., sync not yet finished)
2099 GLenum SyncCondition
;
2100 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2101 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2105 /** Set by #pragma directives */
2106 struct gl_sl_pragmas
2108 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2109 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2110 GLboolean Optimize
; /**< defaults on */
2111 GLboolean Debug
; /**< defaults off */
2116 * A GLSL vertex or fragment shader object.
2120 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2121 GLuint Name
; /**< AKA the handle */
2122 GLint RefCount
; /**< Reference count */
2123 GLboolean DeletePending
;
2124 GLboolean CompileStatus
;
2125 const GLchar
*Source
; /**< Source code string */
2126 GLuint SourceChecksum
; /**< for debug/logging purposes */
2127 struct gl_program
*Program
; /**< Post-compile assembly code */
2129 struct gl_sl_pragmas Pragmas
;
2131 unsigned Version
; /**< GLSL version used for linking */
2133 struct exec_list
*ir
;
2134 struct glsl_symbol_table
*symbols
;
2136 /** Shaders containing built-in functions that are used for linking. */
2137 struct gl_shader
*builtins_to_link
[16];
2138 unsigned num_builtins_to_link
;
2143 * A GLSL program object.
2144 * Basically a linked collection of vertex and fragment shaders.
2146 struct gl_shader_program
2148 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2149 GLuint Name
; /**< aka handle or ID */
2150 GLint RefCount
; /**< Reference count */
2151 GLboolean DeletePending
;
2154 * Flags that the linker should not reject the program if it lacks
2155 * a vertex or fragment shader. GLES2 doesn't allow separate
2156 * shader objects, and would reject them. However, we internally
2157 * build separate shader objects for fixed function programs, which
2158 * we use for drivers/common/meta.c and for handling
2159 * _mesa_update_state with no program bound (for example in
2162 GLboolean InternalSeparateShader
;
2164 GLuint NumShaders
; /**< number of attached shaders */
2165 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2168 * User-defined attribute bindings
2170 * These are set via \c glBindAttribLocation and are used to direct the
2171 * GLSL linker. These are \b not the values used in the compiled shader,
2172 * and they are \b not the values returned by \c glGetAttribLocation.
2174 struct string_to_uint_map
*AttributeBindings
;
2176 /** Transform feedback varyings */
2180 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2181 } TransformFeedback
;
2183 /** Geometry shader state - copied into gl_geometry_program at link time */
2186 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2187 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2188 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2191 /** Vertex shader state - copied into gl_vertex_program at link time */
2193 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2196 /* post-link info: */
2197 struct gl_uniform_list
*Uniforms
;
2198 struct gl_program_parameter_list
*Varying
;
2199 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2200 GLboolean Validated
;
2201 GLboolean _Used
; /**< Ever used for drawing? */
2204 unsigned Version
; /**< GLSL version used for linking */
2207 * Per-stage shaders resulting from the first stage of linking.
2209 * Set of linked shaders for this program. The array is accessed using the
2210 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2213 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2217 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2218 #define GLSL_LOG 0x2 /**< Write shaders to files */
2219 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2220 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2221 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2222 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2223 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2224 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2228 * Context state for GLSL vertex/fragment shaders.
2230 struct gl_shader_state
2233 * Programs used for rendering
2235 * There is a separate program set for each shader stage. If
2236 * GL_EXT_separate_shader_objects is not supported, each of these must point
2237 * to \c NULL or to the same program.
2239 struct gl_shader_program
*CurrentVertexProgram
;
2240 struct gl_shader_program
*CurrentGeometryProgram
;
2241 struct gl_shader_program
*CurrentFragmentProgram
;
2244 * Program used by glUniform calls.
2246 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2248 struct gl_shader_program
*ActiveProgram
;
2250 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2254 * Compiler options for a single GLSL shaders type
2256 struct gl_shader_compiler_options
2258 /** Driver-selectable options: */
2259 GLboolean EmitCondCodes
; /**< Use condition codes? */
2260 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2261 GLboolean EmitNoLoops
;
2262 GLboolean EmitNoFunctions
;
2263 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2264 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2265 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2266 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2267 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2270 * \name Forms of indirect addressing the driver cannot do.
2273 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2274 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2275 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2276 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2279 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2280 GLuint MaxUnrollIterations
;
2282 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2286 * Transform feedback object state
2288 struct gl_transform_feedback_object
2290 GLuint Name
; /**< AKA the object ID */
2292 GLboolean Active
; /**< Is transform feedback enabled? */
2293 GLboolean Paused
; /**< Is transform feedback paused? */
2295 /** The feedback buffers */
2296 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2297 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2299 /** Start of feedback data in dest buffer */
2300 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2301 /** Max data to put into dest buffer (in bytes) */
2302 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2307 * Context state for transform feedback.
2309 struct gl_transform_feedback
2311 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2313 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2315 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2316 struct gl_buffer_object
*CurrentBuffer
;
2318 /** The table of all transform feedback objects */
2319 struct _mesa_HashTable
*Objects
;
2321 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2322 struct gl_transform_feedback_object
*CurrentObject
;
2324 /** The default xform-fb object (Name==0) */
2325 struct gl_transform_feedback_object
*DefaultObject
;
2331 * State which can be shared by multiple contexts:
2333 struct gl_shared_state
2335 _glthread_Mutex Mutex
; /**< for thread safety */
2336 GLint RefCount
; /**< Reference count */
2337 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2338 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2340 /** Default texture objects (shared by all texture units) */
2341 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2343 /** Fallback texture used when a bound texture is incomplete */
2344 struct gl_texture_object
*FallbackTex
;
2347 * \name Thread safety and statechange notification for texture
2350 * \todo Improve the granularity of locking.
2353 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2354 GLuint TextureStateStamp
; /**< state notification for shared tex */
2357 /** Default buffer object for vertex arrays that aren't in VBOs */
2358 struct gl_buffer_object
*NullBufferObj
;
2361 * \name Vertex/geometry/fragment programs
2364 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2365 struct gl_vertex_program
*DefaultVertexProgram
;
2366 struct gl_fragment_program
*DefaultFragmentProgram
;
2367 struct gl_geometry_program
*DefaultGeometryProgram
;
2370 /* GL_ATI_fragment_shader */
2371 struct _mesa_HashTable
*ATIShaders
;
2372 struct ati_fragment_shader
*DefaultFragmentShader
;
2374 struct _mesa_HashTable
*BufferObjects
;
2376 /** Table of both gl_shader and gl_shader_program objects */
2377 struct _mesa_HashTable
*ShaderObjects
;
2379 /* GL_EXT_framebuffer_object */
2380 struct _mesa_HashTable
*RenderBuffers
;
2381 struct _mesa_HashTable
*FrameBuffers
;
2384 struct simple_node SyncObjects
;
2386 /** GL_ARB_sampler_objects */
2387 struct _mesa_HashTable
*SamplerObjects
;
2389 void *DriverData
; /**< Device driver shared state */
2396 * A renderbuffer stores colors or depth values or stencil values.
2397 * A framebuffer object will have a collection of these.
2398 * Data are read/written to the buffer with a handful of Get/Put functions.
2400 * Instances of this object are allocated with the Driver's NewRenderbuffer
2401 * hook. Drivers will likely wrap this class inside a driver-specific
2402 * class to simulate inheritance.
2404 struct gl_renderbuffer
2406 _glthread_Mutex Mutex
; /**< for thread safety */
2407 GLuint ClassID
; /**< Useful for drivers */
2410 GLuint Width
, Height
;
2411 GLint RowStride
; /**< Padded width in units of pixels */
2412 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2414 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2418 GLenum InternalFormat
; /**< The user-specified format */
2419 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2420 GL_STENCIL_INDEX. */
2421 gl_format Format
; /**< The actual renderbuffer memory format */
2423 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2424 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2426 /* Used to wrap one renderbuffer around another: */
2427 struct gl_renderbuffer
*Wrapped
;
2429 /* Delete this renderbuffer */
2430 void (*Delete
)(struct gl_renderbuffer
*rb
);
2432 /* Allocate new storage for this renderbuffer */
2433 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2434 GLenum internalFormat
,
2435 GLuint width
, GLuint height
);
2437 /* Lock/Unlock are called before/after calling the Get/Put functions.
2438 * Not sure this is the right place for these yet.
2439 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2440 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2443 /* Return a pointer to the element/pixel at (x,y).
2444 * Should return NULL if the buffer memory can't be directly addressed.
2446 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2449 /* Get/Read a row of values.
2450 * The values will be of format _BaseFormat and type DataType.
2452 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2453 GLint x
, GLint y
, void *values
);
2455 /* Get/Read values at arbitrary locations.
2456 * The values will be of format _BaseFormat and type DataType.
2458 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2459 const GLint x
[], const GLint y
[], void *values
);
2461 /* Put/Write a row of values.
2462 * The values will be of format _BaseFormat and type DataType.
2464 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2465 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2467 /* Put/Write a row of RGB values. This is a special-case routine that's
2468 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2469 * a common case for glDrawPixels and some triangle routines.
2470 * The values will be of format GL_RGB and type DataType.
2472 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2473 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2476 /* Put/Write a row of identical values.
2477 * The values will be of format _BaseFormat and type DataType.
2479 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2480 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2482 /* Put/Write values at arbitrary locations.
2483 * The values will be of format _BaseFormat and type DataType.
2485 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2486 const GLint x
[], const GLint y
[], const void *values
,
2487 const GLubyte
*mask
);
2488 /* Put/Write identical values at arbitrary locations.
2489 * The values will be of format _BaseFormat and type DataType.
2491 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2492 GLuint count
, const GLint x
[], const GLint y
[],
2493 const void *value
, const GLubyte
*mask
);
2498 * A renderbuffer attachment points to either a texture object (and specifies
2499 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2501 struct gl_renderbuffer_attachment
2503 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2507 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2508 * application supplied renderbuffer object.
2510 struct gl_renderbuffer
*Renderbuffer
;
2513 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2514 * supplied texture object.
2516 struct gl_texture_object
*Texture
;
2517 GLuint TextureLevel
; /**< Attached mipmap level. */
2518 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2519 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2520 * and 2D array textures */
2525 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2526 * In C++ terms, think of this as a base class from which device drivers
2527 * will make derived classes.
2529 struct gl_framebuffer
2531 _glthread_Mutex Mutex
; /**< for thread safety */
2533 * If zero, this is a window system framebuffer. If non-zero, this
2534 * is a FBO framebuffer; note that for some devices (i.e. those with
2535 * a natural pixel coordinate system for FBOs that differs from the
2536 * OpenGL/Mesa coordinate system), this means that the viewport,
2537 * polygon face orientation, and polygon stipple will have to be inverted.
2542 GLboolean DeletePending
;
2545 * The framebuffer's visual. Immutable if this is a window system buffer.
2546 * Computed from attachments if user-made FBO.
2548 struct gl_config Visual
;
2550 GLboolean Initialized
;
2552 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2554 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2556 GLint _Xmin
, _Xmax
; /**< inclusive */
2557 GLint _Ymin
, _Ymax
; /**< exclusive */
2560 /** \name Derived Z buffer stuff */
2562 GLuint _DepthMax
; /**< Max depth buffer value */
2563 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2564 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2567 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2570 /** Integer color values */
2571 GLboolean _IntegerColor
;
2573 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2574 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2576 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2577 * attribute group and GL_PIXEL attribute group, respectively.
2579 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2580 GLenum ColorReadBuffer
;
2582 /** Computed from ColorDraw/ReadBuffer above */
2583 GLuint _NumColorDrawBuffers
;
2584 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2585 GLint _ColorReadBufferIndex
; /* -1 = None */
2586 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2587 struct gl_renderbuffer
*_ColorReadBuffer
;
2589 /** The Actual depth/stencil buffers to use. May be wrappers around the
2590 * depth/stencil buffers attached above. */
2591 struct gl_renderbuffer
*_DepthBuffer
;
2592 struct gl_renderbuffer
*_StencilBuffer
;
2594 /** Delete this framebuffer */
2595 void (*Delete
)(struct gl_framebuffer
*fb
);
2600 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2604 GLushort RangeMin
; /**< min value exponent */
2605 GLushort RangeMax
; /**< max value exponent */
2606 GLushort Precision
; /**< number of mantissa bits */
2611 * Limits for vertex, geometry and fragment programs/shaders.
2613 struct gl_program_constants
2615 /* logical limits */
2616 GLuint MaxInstructions
;
2617 GLuint MaxAluInstructions
;
2618 GLuint MaxTexInstructions
;
2619 GLuint MaxTexIndirections
;
2622 GLuint MaxAddressRegs
;
2623 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2624 GLuint MaxParameters
;
2625 GLuint MaxLocalParams
;
2626 GLuint MaxEnvParams
;
2627 /* native/hardware limits */
2628 GLuint MaxNativeInstructions
;
2629 GLuint MaxNativeAluInstructions
;
2630 GLuint MaxNativeTexInstructions
;
2631 GLuint MaxNativeTexIndirections
;
2632 GLuint MaxNativeAttribs
;
2633 GLuint MaxNativeTemps
;
2634 GLuint MaxNativeAddressRegs
;
2635 GLuint MaxNativeParameters
;
2637 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2638 /* ES 2.0 and GL_ARB_ES2_compatibility */
2639 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2640 struct gl_precision LowInt
, MediumInt
, HighInt
;
2645 * Constants which may be overridden by device driver during context creation
2646 * but are never changed after that.
2650 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2651 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2652 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2653 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2654 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2655 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2656 GLuint MaxTextureCoordUnits
;
2657 GLuint MaxTextureImageUnits
;
2658 GLuint MaxVertexTextureImageUnits
;
2659 GLuint MaxCombinedTextureImageUnits
;
2660 GLuint MaxGeometryTextureImageUnits
;
2661 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2662 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2663 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2664 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2666 GLuint MaxArrayLockSize
;
2670 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2671 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2672 GLfloat PointSizeGranularity
;
2673 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2674 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2675 GLfloat LineWidthGranularity
;
2677 GLuint MaxColorTableSize
;
2679 GLuint MaxClipPlanes
;
2681 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2682 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2684 GLuint MaxViewportWidth
, MaxViewportHeight
;
2686 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2687 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2688 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2689 GLuint MaxProgramMatrices
;
2690 GLuint MaxProgramMatrixStackDepth
;
2692 /** vertex array / buffer object bounds checking */
2693 GLboolean CheckArrayBounds
;
2695 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2697 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2698 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2699 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2701 /** Number of varying vectors between vertex and fragment shaders */
2703 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2704 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2706 /** GL_ARB_geometry_shader4 */
2707 GLuint MaxGeometryOutputVertices
;
2708 GLuint MaxGeometryTotalOutputComponents
;
2710 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2713 * Does the driver support real 32-bit integers? (Otherwise, integers are
2714 * simulated via floats.)
2716 GLboolean NativeIntegers
;
2719 * If the driver supports real 32-bit integers, what integer value should be
2720 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2722 GLuint UniformBooleanTrue
;
2724 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2725 GLbitfield SupportedBumpUnits
;
2728 * Maximum amount of time, measured in nanseconds, that the server can wait.
2730 GLuint64 MaxServerWaitTimeout
;
2732 /** GL_EXT_provoking_vertex */
2733 GLboolean QuadsFollowProvokingVertexConvention
;
2735 /** OpenGL version 3.0 */
2736 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2738 /** OpenGL version 3.2 */
2739 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2741 /** GL_EXT_transform_feedback */
2742 GLuint MaxTransformFeedbackSeparateAttribs
;
2743 GLuint MaxTransformFeedbackSeparateComponents
;
2744 GLuint MaxTransformFeedbackInterleavedComponents
;
2746 /** GL_EXT_gpu_shader4 */
2747 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2749 /* GL_EXT_framebuffer_sRGB */
2750 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2752 /* GL_ARB_robustness */
2753 GLenum ResetStrategy
;
2756 * Whether the implementation strips out and ignores texture borders.
2758 * Many GPU hardware implementations don't support rendering with texture
2759 * borders and mipmapped textures. (Note: not static border color, but the
2760 * old 1-pixel border around each edge). Implementations then have to do
2761 * slow fallbacks to be correct, or just ignore the border and be fast but
2762 * wrong. Setting the flag stripts the border off of TexImage calls,
2763 * providing "fast but wrong" at significantly reduced driver complexity.
2765 * Texture borders are deprecated in GL 3.0.
2767 GLboolean StripTextureBorder
;
2772 * Enable flag for each OpenGL extension. Different device drivers will
2773 * enable different extensions at runtime.
2775 struct gl_extensions
2777 GLboolean dummy
; /* don't remove this! */
2778 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2779 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2780 GLboolean ARB_ES2_compatibility
;
2781 GLboolean ARB_blend_func_extended
;
2782 GLboolean ARB_color_buffer_float
;
2783 GLboolean ARB_copy_buffer
;
2784 GLboolean ARB_depth_buffer_float
;
2785 GLboolean ARB_depth_clamp
;
2786 GLboolean ARB_depth_texture
;
2787 GLboolean ARB_draw_buffers_blend
;
2788 GLboolean ARB_draw_elements_base_vertex
;
2789 GLboolean ARB_draw_instanced
;
2790 GLboolean ARB_fragment_coord_conventions
;
2791 GLboolean ARB_fragment_program
;
2792 GLboolean ARB_fragment_program_shadow
;
2793 GLboolean ARB_fragment_shader
;
2794 GLboolean ARB_framebuffer_object
;
2795 GLboolean ARB_explicit_attrib_location
;
2796 GLboolean ARB_geometry_shader4
;
2797 GLboolean ARB_half_float_pixel
;
2798 GLboolean ARB_half_float_vertex
;
2799 GLboolean ARB_instanced_arrays
;
2800 GLboolean ARB_map_buffer_range
;
2801 GLboolean ARB_occlusion_query
;
2802 GLboolean ARB_occlusion_query2
;
2803 GLboolean ARB_point_sprite
;
2804 GLboolean ARB_sampler_objects
;
2805 GLboolean ARB_seamless_cube_map
;
2806 GLboolean ARB_shader_objects
;
2807 GLboolean ARB_shader_stencil_export
;
2808 GLboolean ARB_shader_texture_lod
;
2809 GLboolean ARB_shading_language_100
;
2810 GLboolean ARB_shadow
;
2811 GLboolean ARB_shadow_ambient
;
2813 GLboolean ARB_texture_border_clamp
;
2814 GLboolean ARB_texture_buffer_object
;
2815 GLboolean ARB_texture_compression_rgtc
;
2816 GLboolean ARB_texture_cube_map
;
2817 GLboolean ARB_texture_env_combine
;
2818 GLboolean ARB_texture_env_crossbar
;
2819 GLboolean ARB_texture_env_dot3
;
2820 GLboolean ARB_texture_float
;
2821 GLboolean ARB_texture_multisample
;
2822 GLboolean ARB_texture_non_power_of_two
;
2823 GLboolean ARB_texture_rg
;
2824 GLboolean ARB_texture_rgb10_a2ui
;
2825 GLboolean ARB_timer_query
;
2826 GLboolean ARB_transform_feedback2
;
2827 GLboolean ARB_transpose_matrix
;
2828 GLboolean ARB_uniform_buffer_object
;
2829 GLboolean ARB_vertex_array_object
;
2830 GLboolean ARB_vertex_program
;
2831 GLboolean ARB_vertex_shader
;
2832 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2833 GLboolean ARB_window_pos
;
2834 GLboolean EXT_blend_color
;
2835 GLboolean EXT_blend_equation_separate
;
2836 GLboolean EXT_blend_func_separate
;
2837 GLboolean EXT_blend_minmax
;
2838 GLboolean EXT_clip_volume_hint
;
2839 GLboolean EXT_compiled_vertex_array
;
2840 GLboolean EXT_depth_bounds_test
;
2841 GLboolean EXT_draw_buffers2
;
2842 GLboolean EXT_draw_range_elements
;
2843 GLboolean EXT_fog_coord
;
2844 GLboolean EXT_framebuffer_blit
;
2845 GLboolean EXT_framebuffer_multisample
;
2846 GLboolean EXT_framebuffer_object
;
2847 GLboolean EXT_framebuffer_sRGB
;
2848 GLboolean EXT_gpu_program_parameters
;
2849 GLboolean EXT_gpu_shader4
;
2850 GLboolean EXT_packed_depth_stencil
;
2851 GLboolean EXT_packed_float
;
2852 GLboolean EXT_packed_pixels
;
2853 GLboolean EXT_pixel_buffer_object
;
2854 GLboolean EXT_point_parameters
;
2855 GLboolean EXT_provoking_vertex
;
2856 GLboolean EXT_rescale_normal
;
2857 GLboolean EXT_shadow_funcs
;
2858 GLboolean EXT_secondary_color
;
2859 GLboolean EXT_separate_shader_objects
;
2860 GLboolean EXT_separate_specular_color
;
2861 GLboolean EXT_stencil_two_side
;
2862 GLboolean EXT_texture3D
;
2863 GLboolean EXT_texture_array
;
2864 GLboolean EXT_texture_compression_latc
;
2865 GLboolean EXT_texture_compression_s3tc
;
2866 GLboolean EXT_texture_env_dot3
;
2867 GLboolean EXT_texture_filter_anisotropic
;
2868 GLboolean EXT_texture_integer
;
2869 GLboolean EXT_texture_mirror_clamp
;
2870 GLboolean EXT_texture_shared_exponent
;
2871 GLboolean EXT_texture_snorm
;
2872 GLboolean EXT_texture_sRGB
;
2873 GLboolean EXT_texture_sRGB_decode
;
2874 GLboolean EXT_texture_swizzle
;
2875 GLboolean EXT_transform_feedback
;
2876 GLboolean EXT_timer_query
;
2877 GLboolean EXT_vertex_array_bgra
;
2878 GLboolean OES_standard_derivatives
;
2879 /* vendor extensions */
2880 GLboolean AMD_conservative_depth
;
2881 GLboolean AMD_seamless_cubemap_per_texture
;
2882 GLboolean APPLE_packed_pixels
;
2883 GLboolean APPLE_vertex_array_object
;
2884 GLboolean APPLE_object_purgeable
;
2885 GLboolean ATI_envmap_bumpmap
;
2886 GLboolean ATI_texture_compression_3dc
;
2887 GLboolean ATI_texture_mirror_once
;
2888 GLboolean ATI_texture_env_combine3
;
2889 GLboolean ATI_fragment_shader
;
2890 GLboolean ATI_separate_stencil
;
2891 GLboolean IBM_rasterpos_clip
;
2892 GLboolean IBM_multimode_draw_arrays
;
2893 GLboolean MESA_pack_invert
;
2894 GLboolean MESA_resize_buffers
;
2895 GLboolean MESA_ycbcr_texture
;
2896 GLboolean MESA_texture_array
;
2897 GLboolean NV_blend_square
;
2898 GLboolean NV_conditional_render
;
2899 GLboolean NV_fragment_program
;
2900 GLboolean NV_fragment_program_option
;
2901 GLboolean NV_light_max_exponent
;
2902 GLboolean NV_point_sprite
;
2903 GLboolean NV_primitive_restart
;
2904 GLboolean NV_texture_barrier
;
2905 GLboolean NV_texgen_reflection
;
2906 GLboolean NV_texture_env_combine4
;
2907 GLboolean NV_texture_rectangle
;
2908 GLboolean NV_vertex_program
;
2909 GLboolean NV_vertex_program1_1
;
2910 GLboolean SGIS_texture_lod
;
2911 GLboolean TDFX_texture_compression_FXT1
;
2913 GLboolean OES_EGL_image
;
2914 GLboolean OES_draw_texture
;
2915 GLboolean extension_sentinel
;
2916 /** The extension string */
2917 const GLubyte
*String
;
2918 /** Number of supported extensions */
2924 * A stack of matrices (projection, modelview, color, texture, etc).
2926 struct gl_matrix_stack
2928 GLmatrix
*Top
; /**< points into Stack */
2929 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2930 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2931 GLuint MaxDepth
; /**< size of Stack[] array */
2932 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2937 * \name Bits for image transfer operations
2938 * \sa __struct gl_contextRec::ImageTransferState.
2941 #define IMAGE_SCALE_BIAS_BIT 0x1
2942 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2943 #define IMAGE_MAP_COLOR_BIT 0x4
2944 #define IMAGE_CLAMP_BIT 0x800
2947 /** Pixel Transfer ops */
2948 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2949 IMAGE_SHIFT_OFFSET_BIT | \
2950 IMAGE_MAP_COLOR_BIT)
2953 * \name Bits to indicate what state has changed.
2956 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2957 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2958 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2959 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2960 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2961 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2962 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2963 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2964 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2965 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2966 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2967 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2968 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2969 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2970 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2971 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2972 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2973 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2974 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2975 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2976 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2977 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2978 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2979 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2980 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2981 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2982 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2983 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2984 #define _NEW_BUFFER_OBJECT (1 << 28)
2985 #define _NEW_FRAG_CLAMP (1 << 29)
2991 * \name Bits to track array state changes
2993 * Also used to summarize array enabled.
2996 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2997 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2998 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2999 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
3000 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
3001 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
3002 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
3003 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
3004 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
3005 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
3006 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
3007 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
3008 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
3009 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
3010 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
3011 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
3012 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
3013 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
3014 #define _NEW_ARRAY_ALL 0xffffffff
3017 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
3018 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
3024 * \name A bunch of flags that we think might be useful to drivers.
3026 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3029 #define DD_FLATSHADE 0x1
3030 #define DD_SEPARATE_SPECULAR 0x2
3031 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3032 #define DD_TRI_LIGHT_TWOSIDE 0x8
3033 #define DD_TRI_UNFILLED 0x10
3034 #define DD_TRI_SMOOTH 0x20
3035 #define DD_TRI_STIPPLE 0x40
3036 #define DD_TRI_OFFSET 0x80
3037 #define DD_LINE_SMOOTH 0x100
3038 #define DD_LINE_STIPPLE 0x200
3039 #define DD_POINT_SMOOTH 0x400
3040 #define DD_POINT_ATTEN 0x800
3041 #define DD_TRI_TWOSTENCIL 0x1000
3046 * \name Define the state changes under which each of these bits might change
3049 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3050 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3051 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3052 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3053 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3054 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3055 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3056 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3057 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3058 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3059 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3060 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3061 #define _DD_NEW_POINT_SIZE _NEW_POINT
3062 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3067 * Composite state flags
3070 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3080 /* This has to be included here. */
3085 * Display list flags.
3086 * Strictly this is a tnl-private concept, but it doesn't seem
3087 * worthwhile adding a tnl private structure just to hold this one bit
3090 #define DLIST_DANGLING_REFS 0x1
3093 /** Opaque declaration of display list payload data type */
3094 union gl_dlist_node
;
3098 * Provide a location where information about a display list can be
3099 * collected. Could be extended with driverPrivate structures,
3100 * etc. in the future.
3102 struct gl_display_list
3105 GLbitfield Flags
; /**< DLIST_x flags */
3106 /** The dlist commands are in a linked list of nodes */
3107 union gl_dlist_node
*Head
;
3112 * State used during display list compilation and execution.
3114 struct gl_dlist_state
3116 GLuint CallDepth
; /**< Current recursion calling depth */
3118 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3119 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3120 GLuint CurrentPos
; /**< Index into current block of nodes */
3122 GLvertexformat ListVtxfmt
;
3124 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3125 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3127 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3128 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3130 GLubyte ActiveIndex
;
3131 GLfloat CurrentIndex
;
3133 GLubyte ActiveEdgeFlag
;
3134 GLboolean CurrentEdgeFlag
;
3137 /* State known to have been set by the currently-compiling display
3138 * list. Used to eliminate some redundant state changes.
3146 * Enum for the OpenGL APIs we know about and may support.
3157 * Mesa rendering context.
3159 * This is the central context data structure for Mesa. Almost all
3160 * OpenGL state is contained in this structure.
3161 * Think of this as a base class from which device drivers will derive
3164 * The struct gl_context typedef names this structure.
3168 /** State possibly shared with other contexts in the address space */
3169 struct gl_shared_state
*Shared
;
3171 /** \name API function pointer tables */
3174 struct _glapi_table
*Save
; /**< Display list save functions */
3175 struct _glapi_table
*Exec
; /**< Execute functions */
3176 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3179 struct gl_config Visual
;
3180 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3181 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3182 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3183 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3186 * Device driver function pointer table
3188 struct dd_function_table Driver
;
3190 void *DriverCtx
; /**< Points to device driver context/state */
3192 /** Core/Driver constants */
3193 struct gl_constants Const
;
3195 /** \name The various 4x4 matrix stacks */
3197 struct gl_matrix_stack ModelviewMatrixStack
;
3198 struct gl_matrix_stack ProjectionMatrixStack
;
3199 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3200 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3201 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3204 /** Combined modelview and projection matrix */
3205 GLmatrix _ModelProjectMatrix
;
3207 /** \name Display lists */
3208 struct gl_dlist_state ListState
;
3210 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3211 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3213 /** Extension information */
3214 struct gl_extensions Extensions
;
3217 GLuint VersionMajor
, VersionMinor
;
3218 char *VersionString
;
3220 /** \name State attribute stack (for glPush/PopAttrib) */
3222 GLuint AttribStackDepth
;
3223 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3226 /** \name Renderer attribute groups
3228 * We define a struct for each attribute group to make pushing and popping
3229 * attributes easy. Also it's a good organization.
3232 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3233 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3234 struct gl_current_attrib Current
; /**< Current attributes */
3235 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3236 struct gl_eval_attrib Eval
; /**< Eval attributes */
3237 struct gl_fog_attrib Fog
; /**< Fog attributes */
3238 struct gl_hint_attrib Hint
; /**< Hint attributes */
3239 struct gl_light_attrib Light
; /**< Light attributes */
3240 struct gl_line_attrib Line
; /**< Line attributes */
3241 struct gl_list_attrib List
; /**< List attributes */
3242 struct gl_multisample_attrib Multisample
;
3243 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3244 struct gl_point_attrib Point
; /**< Point attributes */
3245 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3246 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3247 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3248 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3249 struct gl_texture_attrib Texture
; /**< Texture attributes */
3250 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3251 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3254 /** \name Client attribute stack */
3256 GLuint ClientAttribStackDepth
;
3257 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3260 /** \name Client attribute groups */
3262 struct gl_array_attrib Array
; /**< Vertex arrays */
3263 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3264 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3265 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3268 /** \name Other assorted state (not pushed/popped on attribute stack) */
3270 struct gl_pixelmaps PixelMaps
;
3272 struct gl_evaluators EvalMap
; /**< All evaluators */
3273 struct gl_feedback Feedback
; /**< Feedback */
3274 struct gl_selection Select
; /**< Selection */
3276 struct gl_program_state Program
; /**< general program state */
3277 struct gl_vertex_program_state VertexProgram
;
3278 struct gl_fragment_program_state FragmentProgram
;
3279 struct gl_geometry_program_state GeometryProgram
;
3280 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3282 struct gl_shader_state Shader
; /**< GLSL shader object state */
3283 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3285 struct gl_query_state Query
; /**< occlusion, timer queries */
3287 struct gl_transform_feedback TransformFeedback
;
3289 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3290 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3293 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3295 /* GL_EXT_framebuffer_object */
3296 struct gl_renderbuffer
*CurrentRenderbuffer
;
3298 GLenum ErrorValue
; /**< Last error code */
3300 /* GL_ARB_robustness */
3304 * Recognize and silence repeated error debug messages in buggy apps.
3306 const char *ErrorDebugFmtString
;
3307 GLuint ErrorDebugCount
;
3309 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3310 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3312 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3314 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3316 /** \name Derived state */
3318 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3319 * state validation so they need to always be current.
3321 GLbitfield _TriangleCaps
;
3322 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3323 GLfloat _EyeZDir
[3];
3324 GLfloat _ModelViewInvScale
;
3325 GLboolean _NeedEyeCoords
;
3326 GLboolean _ForceEyeCoords
;
3328 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3330 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3331 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3334 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3336 /** \name For debugging/development only */
3338 GLboolean FirstTimeCurrent
;
3341 /** software compression/decompression supported or not */
3342 GLboolean Mesa_DXTn
;
3344 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3347 * Use dp4 (rather than mul/mad) instructions for position
3350 GLboolean mvp_with_dp4
;
3353 * \name Hooks for module contexts.
3355 * These will eventually live in the driver or elsewhere.
3358 void *swrast_context
;
3359 void *swsetup_context
;
3360 void *swtnl_context
;
3362 struct st_context
*st
;
3369 extern int MESA_VERBOSE
;
3370 extern int MESA_DEBUG_FLAGS
;
3371 # define MESA_FUNCTION __FUNCTION__
3373 # define MESA_VERBOSE 0
3374 # define MESA_DEBUG_FLAGS 0
3375 # define MESA_FUNCTION "a function"
3382 /** The MESA_VERBOSE var is a bitmask of these flags */
3385 VERBOSE_VARRAY
= 0x0001,
3386 VERBOSE_TEXTURE
= 0x0002,
3387 VERBOSE_MATERIAL
= 0x0004,
3388 VERBOSE_PIPELINE
= 0x0008,
3389 VERBOSE_DRIVER
= 0x0010,
3390 VERBOSE_STATE
= 0x0020,
3391 VERBOSE_API
= 0x0040,
3392 VERBOSE_DISPLAY_LIST
= 0x0100,
3393 VERBOSE_LIGHTING
= 0x0200,
3394 VERBOSE_PRIMS
= 0x0400,
3395 VERBOSE_VERTS
= 0x0800,
3396 VERBOSE_DISASSEM
= 0x1000,
3397 VERBOSE_DRAW
= 0x2000,
3398 VERBOSE_SWAPBUFFERS
= 0x4000
3402 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3405 DEBUG_ALWAYS_FLUSH
= 0x1
3410 #endif /* MTYPES_H */