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_pixelstore_attrib
;
77 struct gl_program_cache
;
78 struct gl_texture_format
;
79 struct gl_texture_image
;
80 struct gl_texture_object
;
86 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
87 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
88 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
89 #define PRIM_UNKNOWN (GL_POLYGON+3)
93 * Shader stages. Note that these will become 5 with tessellation.
94 * These MUST have the same values as gallium's PIPE_SHADER_*
98 MESA_SHADER_VERTEX
= 0,
99 MESA_SHADER_FRAGMENT
= 1,
100 MESA_SHADER_GEOMETRY
= 2,
101 MESA_SHADER_TYPES
= 3
107 * Indexes for vertex program attributes.
108 * GL_NV_vertex_program aliases generic attributes over the conventional
109 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
110 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
111 * generic attributes are distinct/separate).
116 VERT_ATTRIB_WEIGHT
= 1,
117 VERT_ATTRIB_NORMAL
= 2,
118 VERT_ATTRIB_COLOR0
= 3,
119 VERT_ATTRIB_COLOR1
= 4,
121 VERT_ATTRIB_COLOR_INDEX
= 6,
122 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
123 VERT_ATTRIB_EDGEFLAG
= 7,
124 VERT_ATTRIB_TEX0
= 8,
125 VERT_ATTRIB_TEX1
= 9,
126 VERT_ATTRIB_TEX2
= 10,
127 VERT_ATTRIB_TEX3
= 11,
128 VERT_ATTRIB_TEX4
= 12,
129 VERT_ATTRIB_TEX5
= 13,
130 VERT_ATTRIB_TEX6
= 14,
131 VERT_ATTRIB_TEX7
= 15,
132 VERT_ATTRIB_GENERIC0
= 16,
133 VERT_ATTRIB_GENERIC1
= 17,
134 VERT_ATTRIB_GENERIC2
= 18,
135 VERT_ATTRIB_GENERIC3
= 19,
136 VERT_ATTRIB_GENERIC4
= 20,
137 VERT_ATTRIB_GENERIC5
= 21,
138 VERT_ATTRIB_GENERIC6
= 22,
139 VERT_ATTRIB_GENERIC7
= 23,
140 VERT_ATTRIB_GENERIC8
= 24,
141 VERT_ATTRIB_GENERIC9
= 25,
142 VERT_ATTRIB_GENERIC10
= 26,
143 VERT_ATTRIB_GENERIC11
= 27,
144 VERT_ATTRIB_GENERIC12
= 28,
145 VERT_ATTRIB_GENERIC13
= 29,
146 VERT_ATTRIB_GENERIC14
= 30,
147 VERT_ATTRIB_GENERIC15
= 31,
152 * Bitflags for vertex attributes.
153 * These are used in bitfields in many places.
156 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
157 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
158 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
159 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
160 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
161 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
162 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
163 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
164 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
165 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
166 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
167 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
168 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
169 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
170 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
171 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
172 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
173 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
174 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
175 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
176 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
177 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
178 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
179 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
180 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
181 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
182 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
183 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
184 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
185 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
186 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
187 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
189 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
190 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
195 * Indexes for vertex program result attributes. Note that
196 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
197 * assumptions about the layout of this enum.
201 VERT_RESULT_HPOS
= 0,
202 VERT_RESULT_COL0
= 1,
203 VERT_RESULT_COL1
= 2,
204 VERT_RESULT_FOGC
= 3,
205 VERT_RESULT_TEX0
= 4,
206 VERT_RESULT_TEX1
= 5,
207 VERT_RESULT_TEX2
= 6,
208 VERT_RESULT_TEX3
= 7,
209 VERT_RESULT_TEX4
= 8,
210 VERT_RESULT_TEX5
= 9,
211 VERT_RESULT_TEX6
= 10,
212 VERT_RESULT_TEX7
= 11,
213 VERT_RESULT_PSIZ
= 12,
214 VERT_RESULT_BFC0
= 13,
215 VERT_RESULT_BFC1
= 14,
216 VERT_RESULT_EDGE
= 15,
217 VERT_RESULT_CLIP_DIST0
= 16,
218 VERT_RESULT_CLIP_DIST1
= 17,
219 VERT_RESULT_VAR0
= 18, /**< shader varying */
220 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
224 /*********************************************/
227 * Indexes for geometry program attributes.
231 GEOM_ATTRIB_POSITION
= 0,
232 GEOM_ATTRIB_COLOR0
= 1,
233 GEOM_ATTRIB_COLOR1
= 2,
234 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
235 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
236 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
237 GEOM_ATTRIB_POINT_SIZE
= 6,
238 GEOM_ATTRIB_CLIP_VERTEX
= 7,
239 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
240 GEOM_ATTRIB_TEX_COORD
= 9,
242 GEOM_ATTRIB_VAR0
= 16,
243 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
247 * Bitflags for geometry attributes.
248 * These are used in bitfields in many places.
251 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
252 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
253 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
254 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
255 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
256 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
257 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
258 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
259 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
260 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
261 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
263 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
268 * Indexes for geometry program result attributes
273 GEOM_RESULT_COL0
= 1,
274 GEOM_RESULT_COL1
= 2,
275 GEOM_RESULT_SCOL0
= 3,
276 GEOM_RESULT_SCOL1
= 4,
277 GEOM_RESULT_FOGC
= 5,
278 GEOM_RESULT_TEX0
= 6,
279 GEOM_RESULT_TEX1
= 7,
280 GEOM_RESULT_TEX2
= 8,
281 GEOM_RESULT_TEX3
= 9,
282 GEOM_RESULT_TEX4
= 10,
283 GEOM_RESULT_TEX5
= 11,
284 GEOM_RESULT_TEX6
= 12,
285 GEOM_RESULT_TEX7
= 13,
286 GEOM_RESULT_PSIZ
= 14,
287 GEOM_RESULT_CLPV
= 15,
288 GEOM_RESULT_PRID
= 16,
289 GEOM_RESULT_LAYR
= 17,
290 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
291 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
292 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
297 * Indexes for fragment program input attributes. Note that
298 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
299 * assumptions about the layout of this enum.
303 FRAG_ATTRIB_WPOS
= 0,
304 FRAG_ATTRIB_COL0
= 1,
305 FRAG_ATTRIB_COL1
= 2,
306 FRAG_ATTRIB_FOGC
= 3,
307 FRAG_ATTRIB_TEX0
= 4,
308 FRAG_ATTRIB_TEX1
= 5,
309 FRAG_ATTRIB_TEX2
= 6,
310 FRAG_ATTRIB_TEX3
= 7,
311 FRAG_ATTRIB_TEX4
= 8,
312 FRAG_ATTRIB_TEX5
= 9,
313 FRAG_ATTRIB_TEX6
= 10,
314 FRAG_ATTRIB_TEX7
= 11,
315 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
316 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
317 FRAG_ATTRIB_CLIP_DIST0
= 14,
318 FRAG_ATTRIB_CLIP_DIST1
= 15,
319 FRAG_ATTRIB_VAR0
= 16, /**< shader varying */
320 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
325 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
327 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
329 * gl_vert_result values which have no corresponding gl_frag_attrib
330 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
331 * VERT_RESULT_EDGE) are converted to a value of -1.
334 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result
)
336 if (vert_result
>= VERT_RESULT_CLIP_DIST0
)
337 return vert_result
- VERT_RESULT_CLIP_DIST0
+ FRAG_ATTRIB_CLIP_DIST0
;
338 else if (vert_result
<= VERT_RESULT_TEX7
)
346 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
348 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
350 * gl_frag_attrib values which have no corresponding gl_vert_result
351 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
354 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib
)
356 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
358 else if (frag_attrib
>= FRAG_ATTRIB_CLIP_DIST0
)
359 return frag_attrib
- FRAG_ATTRIB_CLIP_DIST0
+ VERT_RESULT_CLIP_DIST0
;
366 * Bitflags for fragment program input attributes.
369 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
370 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
371 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
372 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
373 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
374 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
375 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
376 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
377 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
378 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
379 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
380 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
381 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
382 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
383 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
385 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
386 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
388 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
400 * Fragment program results
404 FRAG_RESULT_DEPTH
= 0,
405 FRAG_RESULT_STENCIL
= 1,
406 /* If a single color should be written to all render targets, this
407 * register is written. No FRAG_RESULT_DATAn will be written.
409 FRAG_RESULT_COLOR
= 2,
411 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
412 * or ARB_fragment_program fragment.color[n]) color results. If
413 * any are written, FRAG_RESULT_COLOR will not be written.
415 FRAG_RESULT_DATA0
= 3,
416 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
421 * Indexes for all renderbuffers
425 /* the four standard color buffers */
433 /* optional aux buffer */
435 /* generic renderbuffers */
448 * Bit flags for all renderbuffers
450 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
451 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
452 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
453 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
454 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
455 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
456 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
457 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
458 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
459 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
460 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
461 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
462 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
463 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
464 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
465 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
466 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
467 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
468 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
471 * Mask of all the color buffer bits (but not accum).
473 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
474 BUFFER_BIT_BACK_LEFT | \
475 BUFFER_BIT_FRONT_RIGHT | \
476 BUFFER_BIT_BACK_RIGHT | \
478 BUFFER_BIT_COLOR0 | \
479 BUFFER_BIT_COLOR1 | \
480 BUFFER_BIT_COLOR2 | \
481 BUFFER_BIT_COLOR3 | \
482 BUFFER_BIT_COLOR4 | \
483 BUFFER_BIT_COLOR5 | \
484 BUFFER_BIT_COLOR6 | \
489 * Framebuffer configuration (aka visual / pixelformat)
490 * Note: some of these fields should be boolean, but it appears that
491 * code in drivers/dri/common/util.c requires int-sized fields.
497 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
498 GLuint doubleBufferMode
;
501 GLboolean haveAccumBuffer
;
502 GLboolean haveDepthBuffer
;
503 GLboolean haveStencilBuffer
;
505 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
506 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
507 GLint rgbBits
; /* total bits for rgb */
508 GLint indexBits
; /* total bits for colorindex */
510 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
518 /* EXT_visual_rating / GLX 1.2 */
521 /* EXT_visual_info / GLX 1.2 */
522 GLint transparentPixel
;
523 /* colors are floats scaled to ints */
524 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
525 GLint transparentIndex
;
527 /* ARB_multisample / SGIS_multisample */
531 /* SGIX_pbuffer / GLX 1.3 */
532 GLint maxPbufferWidth
;
533 GLint maxPbufferHeight
;
534 GLint maxPbufferPixels
;
535 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
536 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
538 /* OML_swap_method */
541 /* EXT_texture_from_pixmap */
542 GLint bindToTextureRgb
;
543 GLint bindToTextureRgba
;
544 GLint bindToMipmapTexture
;
545 GLint bindToTextureTargets
;
548 /* EXT_framebuffer_sRGB */
554 * \name Bit flags used for updating material values.
557 #define MAT_ATTRIB_FRONT_AMBIENT 0
558 #define MAT_ATTRIB_BACK_AMBIENT 1
559 #define MAT_ATTRIB_FRONT_DIFFUSE 2
560 #define MAT_ATTRIB_BACK_DIFFUSE 3
561 #define MAT_ATTRIB_FRONT_SPECULAR 4
562 #define MAT_ATTRIB_BACK_SPECULAR 5
563 #define MAT_ATTRIB_FRONT_EMISSION 6
564 #define MAT_ATTRIB_BACK_EMISSION 7
565 #define MAT_ATTRIB_FRONT_SHININESS 8
566 #define MAT_ATTRIB_BACK_SHININESS 9
567 #define MAT_ATTRIB_FRONT_INDEXES 10
568 #define MAT_ATTRIB_BACK_INDEXES 11
569 #define MAT_ATTRIB_MAX 12
571 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
572 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
573 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
574 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
575 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
576 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
578 #define MAT_INDEX_AMBIENT 0
579 #define MAT_INDEX_DIFFUSE 1
580 #define MAT_INDEX_SPECULAR 2
582 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
583 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
584 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
585 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
586 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
587 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
588 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
589 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
590 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
591 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
592 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
593 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
596 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
597 MAT_BIT_FRONT_AMBIENT | \
598 MAT_BIT_FRONT_DIFFUSE | \
599 MAT_BIT_FRONT_SPECULAR | \
600 MAT_BIT_FRONT_SHININESS | \
601 MAT_BIT_FRONT_INDEXES)
603 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
604 MAT_BIT_BACK_AMBIENT | \
605 MAT_BIT_BACK_DIFFUSE | \
606 MAT_BIT_BACK_SPECULAR | \
607 MAT_BIT_BACK_SHININESS | \
608 MAT_BIT_BACK_INDEXES)
610 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
614 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
615 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
618 * Material shininess lookup table.
622 struct gl_shine_tab
*next
, *prev
;
623 GLfloat tab
[SHINE_TABLE_SIZE
+1];
630 * Light source state.
634 struct gl_light
*next
; /**< double linked list with sentinel */
635 struct gl_light
*prev
;
637 GLfloat Ambient
[4]; /**< ambient color */
638 GLfloat Diffuse
[4]; /**< diffuse color */
639 GLfloat Specular
[4]; /**< specular color */
640 GLfloat EyePosition
[4]; /**< position in eye coordinates */
641 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
642 GLfloat SpotExponent
;
643 GLfloat SpotCutoff
; /**< in degrees */
644 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
645 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
646 GLfloat ConstantAttenuation
;
647 GLfloat LinearAttenuation
;
648 GLfloat QuadraticAttenuation
;
649 GLboolean Enabled
; /**< On/off flag */
652 * \name Derived fields
655 GLbitfield _Flags
; /**< State */
657 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
658 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
659 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
660 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
661 GLfloat _VP_inf_spot_attenuation
;
663 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
664 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
665 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
666 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
667 GLfloat _dli
; /**< CI diffuse light intensity */
668 GLfloat _sli
; /**< CI specular light intensity */
678 GLfloat Ambient
[4]; /**< ambient color */
679 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
680 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
681 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
682 * or GL_SEPARATE_SPECULAR_COLOR */
691 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
696 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
698 struct gl_accum_attrib
700 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
705 * Used for storing clear color, texture border color, etc.
706 * The float values are typically unclamped.
717 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
719 struct gl_colorbuffer_attrib
721 GLuint ClearIndex
; /**< Index for glClear */
722 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
723 GLuint IndexMask
; /**< Color index write mask */
724 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
726 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
729 * \name alpha testing
732 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
733 GLenum AlphaFunc
; /**< Alpha test function */
734 GLfloat AlphaRefUnclamped
;
735 GLclampf AlphaRef
; /**< Alpha reference value */
742 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
744 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
745 * control, only on the fixed-pointness of the render target.
746 * The query does however depend on fragment color clamping.
748 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
749 GLfloat BlendColor
[4]; /**< Blending color */
753 GLenum SrcRGB
; /**< RGB blend source term */
754 GLenum DstRGB
; /**< RGB blend dest term */
755 GLenum SrcA
; /**< Alpha blend source term */
756 GLenum DstA
; /**< Alpha blend dest term */
757 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
758 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
759 } Blend
[MAX_DRAW_BUFFERS
];
760 /** Are the blend func terms currently different for each buffer/target? */
761 GLboolean _BlendFuncPerBuffer
;
762 /** Are the blend equations currently different for each buffer/target? */
763 GLboolean _BlendEquationPerBuffer
;
770 GLenum LogicOp
; /**< Logic operator */
771 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
772 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
775 GLboolean DitherFlag
; /**< Dither enable flag */
777 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
778 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
779 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
780 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
782 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
787 * Current attribute group (GL_CURRENT_BIT).
789 struct gl_current_attrib
792 * \name Current vertex attributes.
793 * \note Values are valid only after FLUSH_VERTICES has been called.
794 * \note Index and Edgeflag current values are stored as floats in the
795 * SIX and SEVEN attribute slots.
797 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
800 * \name Current raster position attributes (always valid).
801 * \note This set of attributes is very similar to the SWvertex struct.
804 GLfloat RasterPos
[4];
805 GLfloat RasterDistance
;
806 GLfloat RasterColor
[4];
807 GLfloat RasterSecondaryColor
[4];
808 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
809 GLboolean RasterPosValid
;
815 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
817 struct gl_depthbuffer_attrib
819 GLenum Func
; /**< Function for depth buffer compare */
820 GLclampd Clear
; /**< Value to clear depth buffer to */
821 GLboolean Test
; /**< Depth buffering enabled flag */
822 GLboolean Mask
; /**< Depth buffer writable? */
823 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
824 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
829 * Evaluator attribute group (GL_EVAL_BIT).
831 struct gl_eval_attrib
837 GLboolean Map1Color4
;
839 GLboolean Map1Normal
;
840 GLboolean Map1TextureCoord1
;
841 GLboolean Map1TextureCoord2
;
842 GLboolean Map1TextureCoord3
;
843 GLboolean Map1TextureCoord4
;
844 GLboolean Map1Vertex3
;
845 GLboolean Map1Vertex4
;
846 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
847 GLboolean Map2Color4
;
849 GLboolean Map2Normal
;
850 GLboolean Map2TextureCoord1
;
851 GLboolean Map2TextureCoord2
;
852 GLboolean Map2TextureCoord3
;
853 GLboolean Map2TextureCoord4
;
854 GLboolean Map2Vertex3
;
855 GLboolean Map2Vertex4
;
856 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
857 GLboolean AutoNormal
;
861 * \name Map Grid endpoints and divisions and calculated du values
865 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
866 GLint MapGrid2un
, MapGrid2vn
;
867 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
868 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
874 * Fog attribute group (GL_FOG_BIT).
878 GLboolean Enabled
; /**< Fog enabled flag */
879 GLfloat ColorUnclamped
[4]; /**< Fog color */
880 GLfloat Color
[4]; /**< Fog color */
881 GLfloat Density
; /**< Density >= 0.0 */
882 GLfloat Start
; /**< Start distance in eye coords */
883 GLfloat End
; /**< End distance in eye coords */
884 GLfloat Index
; /**< Fog index */
885 GLenum Mode
; /**< Fog mode */
886 GLboolean ColorSumEnabled
;
887 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
888 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
893 * \brief Layout qualifiers for gl_FragDepth.
895 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
896 * a layout qualifier.
898 * \see enum ir_depth_layout
900 enum gl_frag_depth_layout
{
901 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
902 FRAG_DEPTH_LAYOUT_ANY
,
903 FRAG_DEPTH_LAYOUT_GREATER
,
904 FRAG_DEPTH_LAYOUT_LESS
,
905 FRAG_DEPTH_LAYOUT_UNCHANGED
910 * Hint attribute group (GL_HINT_BIT).
912 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
914 struct gl_hint_attrib
916 GLenum PerspectiveCorrection
;
919 GLenum PolygonSmooth
;
921 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
922 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
923 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
924 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
931 #define LIGHT_SPOT 0x1
932 #define LIGHT_LOCAL_VIEWER 0x2
933 #define LIGHT_POSITIONAL 0x4
934 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
939 * Lighting attribute group (GL_LIGHT_BIT).
941 struct gl_light_attrib
943 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
944 struct gl_lightmodel Model
; /**< Lighting model */
947 * Must flush FLUSH_VERTICES before referencing:
950 struct gl_material Material
; /**< Includes front & back values */
953 GLboolean Enabled
; /**< Lighting enabled flag */
954 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
955 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
956 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
957 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
958 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
959 GLboolean ColorMaterialEnabled
;
960 GLenum ClampVertexColor
;
961 GLboolean _ClampVertexColor
;
963 struct gl_light EnabledList
; /**< List sentinel */
966 * Derived state for optimizations:
969 GLboolean _NeedEyeCoords
;
970 GLboolean _NeedVertices
; /**< Use fast shader? */
971 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
972 GLfloat _BaseColor
[2][3];
978 * Line attribute group (GL_LINE_BIT).
980 struct gl_line_attrib
982 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
983 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
984 GLushort StipplePattern
; /**< Stipple pattern */
985 GLint StippleFactor
; /**< Stipple repeat factor */
986 GLfloat Width
; /**< Line width */
991 * Display list attribute group (GL_LIST_BIT).
993 struct gl_list_attrib
1000 * Multisample attribute group (GL_MULTISAMPLE_BIT).
1002 struct gl_multisample_attrib
1005 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
1006 GLboolean SampleAlphaToCoverage
;
1007 GLboolean SampleAlphaToOne
;
1008 GLboolean SampleCoverage
;
1009 GLfloat SampleCoverageValue
;
1010 GLboolean SampleCoverageInvert
;
1015 * A pixelmap (see glPixelMap)
1020 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1021 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1026 * Collection of all pixelmaps
1030 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1031 struct gl_pixelmap GtoG
;
1032 struct gl_pixelmap BtoB
;
1033 struct gl_pixelmap AtoA
;
1034 struct gl_pixelmap ItoR
;
1035 struct gl_pixelmap ItoG
;
1036 struct gl_pixelmap ItoB
;
1037 struct gl_pixelmap ItoA
;
1038 struct gl_pixelmap ItoI
;
1039 struct gl_pixelmap StoS
;
1044 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1046 struct gl_pixel_attrib
1048 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1050 /*--- Begin Pixel Transfer State ---*/
1051 /* Fields are in the order in which they're applied... */
1053 /** Scale & Bias (index shift, offset) */
1055 GLfloat RedBias
, RedScale
;
1056 GLfloat GreenBias
, GreenScale
;
1057 GLfloat BlueBias
, BlueScale
;
1058 GLfloat AlphaBias
, AlphaScale
;
1059 GLfloat DepthBias
, DepthScale
;
1060 GLint IndexShift
, IndexOffset
;
1064 /* Note: actual pixel maps are not part of this attrib group */
1065 GLboolean MapColorFlag
;
1066 GLboolean MapStencilFlag
;
1068 /*--- End Pixel Transfer State ---*/
1071 GLfloat ZoomX
, ZoomY
;
1076 * Point attribute group (GL_POINT_BIT).
1078 struct gl_point_attrib
1080 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1081 GLfloat Size
; /**< User-specified point size */
1082 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1083 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1084 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1085 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1086 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1087 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1088 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1089 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1094 * Polygon attribute group (GL_POLYGON_BIT).
1096 struct gl_polygon_attrib
1098 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1099 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1100 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1101 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1102 GLboolean CullFlag
; /**< Culling on/off flag */
1103 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1104 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1105 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1106 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1107 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1108 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1109 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1110 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1115 * Scissor attributes (GL_SCISSOR_BIT).
1117 struct gl_scissor_attrib
1119 GLboolean Enabled
; /**< Scissor test enabled? */
1120 GLint X
, Y
; /**< Lower left corner of box */
1121 GLsizei Width
, Height
; /**< Size of box */
1126 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1128 * Three sets of stencil data are tracked so that OpenGL 2.0,
1129 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1130 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1131 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1132 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1133 * GL_EXT_stencil_two_side GL_BACK state.
1135 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1136 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1138 * The derived value \c _TestTwoSide is set when the front-face and back-face
1139 * stencil state are different.
1141 struct gl_stencil_attrib
1143 GLboolean Enabled
; /**< Enabled flag */
1144 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1145 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1146 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1147 GLboolean _TestTwoSide
;
1148 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1149 GLenum Function
[3]; /**< Stencil function */
1150 GLenum FailFunc
[3]; /**< Fail function */
1151 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1152 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1153 GLint Ref
[3]; /**< Reference value */
1154 GLuint ValueMask
[3]; /**< Value mask */
1155 GLuint WriteMask
[3]; /**< Write mask */
1156 GLuint Clear
; /**< Clear value */
1161 * An index for each type of texture object. These correspond to the GL
1162 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1163 * Note: the order is from highest priority to lowest priority.
1167 TEXTURE_BUFFER_INDEX
,
1168 TEXTURE_2D_ARRAY_INDEX
,
1169 TEXTURE_1D_ARRAY_INDEX
,
1180 * Bit flags for each type of texture object
1181 * Used for Texture.Unit[]._ReallyEnabled flags.
1184 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1185 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1186 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1187 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1188 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1189 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1190 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1191 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1196 * TexGenEnabled flags.
1203 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1208 * Bit flag versions of the corresponding GL_ constants.
1211 #define TEXGEN_SPHERE_MAP 0x1
1212 #define TEXGEN_OBJ_LINEAR 0x2
1213 #define TEXGEN_EYE_LINEAR 0x4
1214 #define TEXGEN_REFLECTION_MAP_NV 0x8
1215 #define TEXGEN_NORMAL_MAP_NV 0x10
1217 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1218 TEXGEN_REFLECTION_MAP_NV | \
1219 TEXGEN_NORMAL_MAP_NV)
1220 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1221 TEXGEN_REFLECTION_MAP_NV | \
1222 TEXGEN_NORMAL_MAP_NV | \
1228 /** Tex-gen enabled for texture unit? */
1229 #define ENABLE_TEXGEN(unit) (1 << (unit))
1231 /** Non-identity texture matrix for texture unit? */
1232 #define ENABLE_TEXMAT(unit) (1 << (unit))
1236 * Texture image state. Describes the dimensions of a texture image,
1237 * the texel format and pointers to Texel Fetch functions.
1239 struct gl_texture_image
1241 GLint InternalFormat
; /**< Internal format as given by the user */
1242 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1243 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1244 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1245 * GL_DEPTH_STENCIL_EXT only. Used for
1246 * choosing TexEnv arithmetic.
1248 gl_format TexFormat
; /**< The actual texture memory format */
1250 GLuint Border
; /**< 0 or 1 */
1251 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1252 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1253 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1254 GLuint Width2
; /**< = Width - 2*Border */
1255 GLuint Height2
; /**< = Height - 2*Border */
1256 GLuint Depth2
; /**< = Depth - 2*Border */
1257 GLuint WidthLog2
; /**< = log2(Width2) */
1258 GLuint HeightLog2
; /**< = log2(Height2) */
1259 GLuint DepthLog2
; /**< = log2(Depth2) */
1260 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1262 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1263 GLuint Level
; /**< Which mipmap level am I? */
1264 /** Cube map face: index into gl_texture_object::Image[] array */
1267 GLuint RowStride
; /**< Padded width in units of texels */
1268 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1269 each 2D slice in 'Data', in texels */
1270 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1273 * \name For device driver:
1276 void *DriverData
; /**< Arbitrary device driver data */
1282 * Indexes for cube map faces.
1297 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1298 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1300 struct gl_sampler_object
1305 GLenum WrapS
; /**< S-axis texture image wrap mode */
1306 GLenum WrapT
; /**< T-axis texture image wrap mode */
1307 GLenum WrapR
; /**< R-axis texture image wrap mode */
1308 GLenum MinFilter
; /**< minification filter */
1309 GLenum MagFilter
; /**< magnification filter */
1310 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1311 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1312 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1313 GLfloat LodBias
; /**< OpenGL 1.4 */
1314 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1315 GLenum CompareMode
; /**< GL_ARB_shadow */
1316 GLenum CompareFunc
; /**< GL_ARB_shadow */
1317 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1318 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1319 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1321 /* deprecated sampler state */
1322 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1324 /** Is the texture object complete with respect to this sampler? */
1325 GLboolean _CompleteTexture
;
1330 * Texture object state. Contains the array of mipmap images, border color,
1331 * wrap modes, filter modes, and shadow/texcompare state.
1333 struct gl_texture_object
1335 _glthread_Mutex Mutex
; /**< for thread safety */
1336 GLint RefCount
; /**< reference count */
1337 GLuint Name
; /**< the user-visible texture object ID */
1338 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1340 struct gl_sampler_object Sampler
;
1342 GLfloat Priority
; /**< in [0,1] */
1343 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1344 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1345 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1346 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1347 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1348 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1349 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1350 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1351 GLboolean _Complete
; /**< Is texture object complete? */
1352 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1353 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1355 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1356 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1358 /** GL_ARB_texture_buffer_object */
1359 struct gl_buffer_object
*BufferObject
;
1360 GLenum BufferObjectFormat
;
1363 * \name For device driver.
1364 * Note: instead of attaching driver data to this pointer, it's preferable
1365 * to instead use this struct as a base class for your own texture object
1366 * class. Driver->NewTextureObject() can be used to implement the
1369 void *DriverData
; /**< Arbitrary device driver data */
1373 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1374 #define MAX_COMBINER_TERMS 4
1378 * Texture combine environment state.
1380 struct gl_tex_env_combine_state
1382 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1383 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1384 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1385 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1386 GLenum SourceA
[MAX_COMBINER_TERMS
];
1387 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1388 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1389 GLenum OperandA
[MAX_COMBINER_TERMS
];
1390 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1391 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1392 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1393 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1398 * Texture coord generation state.
1402 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1403 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1404 GLfloat ObjectPlane
[4];
1405 GLfloat EyePlane
[4];
1410 * Texture unit state. Contains enable flags, texture environment/function/
1411 * combiners, texgen state, and pointers to current texture objects.
1413 struct gl_texture_unit
1415 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1416 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1418 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1419 GLclampf EnvColor
[4];
1420 GLfloat EnvColorUnclamped
[4];
1422 struct gl_texgen GenS
;
1423 struct gl_texgen GenT
;
1424 struct gl_texgen GenR
;
1425 struct gl_texgen GenQ
;
1426 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1427 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1429 GLfloat LodBias
; /**< for biasing mipmap levels */
1431 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1433 /** Current sampler object (GL_ARB_sampler_objects) */
1434 struct gl_sampler_object
*Sampler
;
1437 * \name GL_EXT_texture_env_combine
1439 struct gl_tex_env_combine_state Combine
;
1442 * Derived state based on \c EnvMode and the \c BaseFormat of the
1443 * currently enabled texture.
1445 struct gl_tex_env_combine_state _EnvMode
;
1448 * Currently enabled combiner state. This will point to either
1449 * \c Combine or \c _EnvMode.
1451 struct gl_tex_env_combine_state
*_CurrentCombine
;
1453 /** Current texture object pointers */
1454 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1456 /** Points to highest priority, complete and enabled texture object */
1457 struct gl_texture_object
*_Current
;
1462 * Texture attribute group (GL_TEXTURE_BIT).
1464 struct gl_texture_attrib
1466 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1467 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1469 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1471 /** GL_ARB_texture_buffer_object */
1472 struct gl_buffer_object
*BufferObject
;
1474 /** GL_ARB_seamless_cubemap */
1475 GLboolean CubeMapSeamless
;
1477 /** Texture units/samplers used by vertex or fragment texturing */
1478 GLbitfield _EnabledUnits
;
1480 /** Texture coord units/sets used for fragment texturing */
1481 GLbitfield _EnabledCoordUnits
;
1483 /** Texture coord units that have texgen enabled */
1484 GLbitfield _TexGenEnabled
;
1486 /** Texture coord units that have non-identity matrices */
1487 GLbitfield _TexMatEnabled
;
1489 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1490 GLbitfield _GenFlags
;
1495 * Transformation attribute group (GL_TRANSFORM_BIT).
1497 struct gl_transform_attrib
1499 GLenum MatrixMode
; /**< Matrix mode */
1500 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1501 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1502 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1503 GLboolean Normalize
; /**< Normalize all normals? */
1504 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1505 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1506 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1508 GLfloat CullEyePos
[4];
1509 GLfloat CullObjPos
[4];
1514 * Viewport attribute group (GL_VIEWPORT_BIT).
1516 struct gl_viewport_attrib
1518 GLint X
, Y
; /**< position */
1519 GLsizei Width
, Height
; /**< size */
1520 GLfloat Near
, Far
; /**< Depth buffer range */
1521 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1526 * GL_ARB_vertex/pixel_buffer_object buffer object
1528 struct gl_buffer_object
1530 _glthread_Mutex Mutex
;
1533 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1534 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1535 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1536 /** Fields describing a mapped buffer */
1538 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1539 GLvoid
*Pointer
; /**< User-space address of mapping */
1540 GLintptr Offset
; /**< Mapped offset */
1541 GLsizeiptr Length
; /**< Mapped length */
1543 GLboolean Written
; /**< Ever written to? (for debugging) */
1544 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1549 * Client pixel packing/unpacking attributes
1551 struct gl_pixelstore_attrib
1559 GLboolean SwapBytes
;
1561 GLboolean Invert
; /**< GL_MESA_pack_invert */
1562 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1567 * Client vertex array attributes
1569 struct gl_client_array
1571 GLint Size
; /**< components per element (1,2,3,4) */
1572 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1573 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1574 GLsizei Stride
; /**< user-specified stride */
1575 GLsizei StrideB
; /**< actual stride in bytes */
1576 const GLubyte
*Ptr
; /**< Points to array data */
1577 GLboolean Enabled
; /**< Enabled flag is a boolean */
1578 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1579 GLboolean Integer
; /**< Integer-valued? */
1580 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1581 GLuint _ElementSize
; /**< size of each element in bytes */
1583 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1584 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1589 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1590 * extension, but a nice encapsulation in any case.
1592 struct gl_array_object
1594 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1598 _glthread_Mutex Mutex
;
1599 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1601 /** Conventional vertex arrays */
1603 struct gl_client_array Vertex
;
1604 struct gl_client_array Weight
;
1605 struct gl_client_array Normal
;
1606 struct gl_client_array Color
;
1607 struct gl_client_array SecondaryColor
;
1608 struct gl_client_array FogCoord
;
1609 struct gl_client_array Index
;
1610 struct gl_client_array EdgeFlag
;
1611 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1612 struct gl_client_array PointSize
;
1616 * Generic arrays for vertex programs/shaders.
1617 * For NV vertex programs, these attributes alias and take priority
1618 * over the conventional attribs above. For ARB vertex programs and
1619 * GLSL vertex shaders, these attributes are separate.
1621 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1623 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1624 GLbitfield _Enabled
;
1627 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1628 * we can determine the max legal (in bounds) glDrawElements array index.
1635 * Vertex array state
1637 struct gl_array_attrib
1639 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1640 struct gl_array_object
*ArrayObj
;
1642 /** The default vertex array object */
1643 struct gl_array_object
*DefaultArrayObj
;
1645 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1646 struct _mesa_HashTable
*Objects
;
1648 GLint ActiveTexture
; /**< Client Active Texture */
1649 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1650 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1652 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1653 GLboolean PrimitiveRestart
;
1654 GLuint RestartIndex
;
1656 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1657 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1659 /* GL_ARB_vertex_buffer_object */
1660 struct gl_buffer_object
*ArrayBufferObj
;
1661 struct gl_buffer_object
*ElementArrayBufferObj
;
1666 * Feedback buffer state
1671 GLbitfield _Mask
; /**< FB_* bits */
1679 * Selection buffer state
1683 GLuint
*Buffer
; /**< selection buffer */
1684 GLuint BufferSize
; /**< size of the selection buffer */
1685 GLuint BufferCount
; /**< number of values in the selection buffer */
1686 GLuint Hits
; /**< number of records in the selection buffer */
1687 GLuint NameStackDepth
; /**< name stack depth */
1688 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1689 GLboolean HitFlag
; /**< hit flag */
1690 GLfloat HitMinZ
; /**< minimum hit depth */
1691 GLfloat HitMaxZ
; /**< maximum hit depth */
1696 * 1-D Evaluator control points
1700 GLuint Order
; /**< Number of control points */
1701 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1702 GLfloat
*Points
; /**< Points to contiguous control points */
1707 * 2-D Evaluator control points
1711 GLuint Uorder
; /**< Number of control points in U dimension */
1712 GLuint Vorder
; /**< Number of control points in V dimension */
1715 GLfloat
*Points
; /**< Points to contiguous control points */
1720 * All evaluator control point state
1722 struct gl_evaluators
1728 struct gl_1d_map Map1Vertex3
;
1729 struct gl_1d_map Map1Vertex4
;
1730 struct gl_1d_map Map1Index
;
1731 struct gl_1d_map Map1Color4
;
1732 struct gl_1d_map Map1Normal
;
1733 struct gl_1d_map Map1Texture1
;
1734 struct gl_1d_map Map1Texture2
;
1735 struct gl_1d_map Map1Texture3
;
1736 struct gl_1d_map Map1Texture4
;
1737 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1744 struct gl_2d_map Map2Vertex3
;
1745 struct gl_2d_map Map2Vertex4
;
1746 struct gl_2d_map Map2Index
;
1747 struct gl_2d_map Map2Color4
;
1748 struct gl_2d_map Map2Normal
;
1749 struct gl_2d_map Map2Texture1
;
1750 struct gl_2d_map Map2Texture2
;
1751 struct gl_2d_map Map2Texture3
;
1752 struct gl_2d_map Map2Texture4
;
1753 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1759 * Names of the various vertex/fragment program register files, etc.
1761 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1762 * All values should fit in a 4-bit field.
1764 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1765 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1766 * be "uniform" variables since they can only be set outside glBegin/End.
1767 * They're also all stored in the same Parameters array.
1771 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1772 PROGRAM_INPUT
, /**< machine->Inputs[] */
1773 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1774 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1775 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1776 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1777 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1778 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1779 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1780 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1781 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1782 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1783 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1784 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1785 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1791 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1792 * one of these values.
1796 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1797 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1798 SYSTEM_VALUE_MAX
/**< Number of values */
1802 /** Vertex and fragment instructions */
1803 struct prog_instruction
;
1804 struct gl_program_parameter_list
;
1805 struct gl_uniform_list
;
1809 * Base class for any kind of program object
1814 GLubyte
*String
; /**< Null-terminated program text */
1816 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1817 GLenum Format
; /**< String encoding format */
1820 struct prog_instruction
*Instructions
;
1822 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1823 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1824 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1825 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1826 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1827 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1828 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1829 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1832 /** Named parameters, constants, etc. from program text */
1833 struct gl_program_parameter_list
*Parameters
;
1834 /** Numbered local parameters */
1835 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1837 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1838 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1839 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1840 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1842 /** Bitmask of which register files are read/written with indirect
1843 * addressing. Mask of (1 << PROGRAM_x) bits.
1845 GLbitfield IndirectRegisterFiles
;
1847 /** Logical counts */
1849 GLuint NumInstructions
;
1850 GLuint NumTemporaries
;
1851 GLuint NumParameters
;
1852 GLuint NumAttributes
;
1853 GLuint NumAddressRegs
;
1854 GLuint NumAluInstructions
;
1855 GLuint NumTexInstructions
;
1856 GLuint NumTexIndirections
;
1858 /** Native, actual h/w counts */
1860 GLuint NumNativeInstructions
;
1861 GLuint NumNativeTemporaries
;
1862 GLuint NumNativeParameters
;
1863 GLuint NumNativeAttributes
;
1864 GLuint NumNativeAddressRegs
;
1865 GLuint NumNativeAluInstructions
;
1866 GLuint NumNativeTexInstructions
;
1867 GLuint NumNativeTexIndirections
;
1872 /** Vertex program object */
1873 struct gl_vertex_program
1875 struct gl_program Base
; /**< base class */
1876 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1877 GLboolean IsPositionInvariant
;
1878 GLboolean UsesClipDistance
;
1882 /** Geometry program object */
1883 struct gl_geometry_program
1885 struct gl_program Base
; /**< base class */
1888 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1889 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1890 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1894 /** Fragment program object */
1895 struct gl_fragment_program
1897 struct gl_program Base
; /**< base class */
1898 GLboolean UsesKill
; /**< shader uses KIL instruction */
1899 GLboolean OriginUpperLeft
;
1900 GLboolean PixelCenterInteger
;
1901 enum gl_frag_depth_layout FragDepthLayout
;
1906 * State common to vertex and fragment programs.
1908 struct gl_program_state
1910 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1911 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1916 * Context state for vertex programs.
1918 struct gl_vertex_program_state
1920 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1921 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1922 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1923 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1924 /** Computed two sided lighting for fixed function/programs. */
1925 GLboolean _TwoSideEnabled
;
1926 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1928 /** Currently enabled and valid vertex program (including internal
1929 * programs, user-defined vertex programs and GLSL vertex shaders).
1930 * This is the program we must use when rendering.
1932 struct gl_vertex_program
*_Current
;
1934 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1936 /* For GL_NV_vertex_program only: */
1937 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1938 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1940 /** Should fixed-function T&L be implemented with a vertex prog? */
1941 GLboolean _MaintainTnlProgram
;
1943 /** Program to emulate fixed-function T&L (see above) */
1944 struct gl_vertex_program
*_TnlProgram
;
1946 /** Cache of fixed-function programs */
1947 struct gl_program_cache
*Cache
;
1949 GLboolean _Overriden
;
1954 * Context state for geometry programs.
1956 struct gl_geometry_program_state
1958 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1959 GLboolean _Enabled
; /**< Enabled and valid program? */
1960 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1962 /** Currently enabled and valid program (including internal programs
1963 * and compiled shader programs).
1965 struct gl_geometry_program
*_Current
;
1967 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1969 /** Cache of fixed-function programs */
1970 struct gl_program_cache
*Cache
;
1974 * Context state for fragment programs.
1976 struct gl_fragment_program_state
1978 GLboolean Enabled
; /**< User-set fragment program enable flag */
1979 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1980 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1982 /** Currently enabled and valid fragment program (including internal
1983 * programs, user-defined fragment programs and GLSL fragment shaders).
1984 * This is the program we must use when rendering.
1986 struct gl_fragment_program
*_Current
;
1988 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1990 /** Should fixed-function texturing be implemented with a fragment prog? */
1991 GLboolean _MaintainTexEnvProgram
;
1993 /** Program to emulate fixed-function texture env/combine (see above) */
1994 struct gl_fragment_program
*_TexEnvProgram
;
1996 /** Cache of fixed-function programs */
1997 struct gl_program_cache
*Cache
;
2002 * ATI_fragment_shader runtime state
2004 #define ATI_FS_INPUT_PRIMARY 0
2005 #define ATI_FS_INPUT_SECONDARY 1
2007 struct atifs_instruction
;
2008 struct atifs_setupinst
;
2011 * ATI fragment shader
2013 struct ati_fragment_shader
2017 struct atifs_instruction
*Instructions
[2];
2018 struct atifs_setupinst
*SetupInst
[2];
2019 GLfloat Constants
[8][4];
2020 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2021 GLubyte numArithInstr
[2];
2022 GLubyte regsAssigned
[2];
2023 GLubyte NumPasses
; /**< 1 or 2 */
2025 GLubyte last_optype
;
2026 GLboolean interpinp1
;
2032 * Context state for GL_ATI_fragment_shader
2034 struct gl_ati_fragment_shader_state
2037 GLboolean _Enabled
; /**< enabled and valid shader? */
2038 GLboolean Compiling
;
2039 GLfloat GlobalConstants
[8][4];
2040 struct ati_fragment_shader
*Current
;
2045 * Occlusion/timer query object.
2047 struct gl_query_object
2049 GLenum Target
; /**< The query target, when active */
2050 GLuint Id
; /**< hash table ID/name */
2051 GLuint64EXT Result
; /**< the counter */
2052 GLboolean Active
; /**< inside Begin/EndQuery */
2053 GLboolean Ready
; /**< result is ready? */
2058 * Context state for query objects.
2060 struct gl_query_state
2062 struct _mesa_HashTable
*QueryObjects
;
2063 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2064 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2066 /** GL_NV_conditional_render */
2067 struct gl_query_object
*CondRenderQuery
;
2069 /** GL_EXT_transform_feedback */
2070 struct gl_query_object
*PrimitivesGenerated
;
2071 struct gl_query_object
*PrimitivesWritten
;
2073 /** GL_ARB_timer_query */
2074 struct gl_query_object
*TimeElapsed
;
2076 GLenum CondRenderMode
;
2080 /** Sync object state */
2081 struct gl_sync_object
{
2082 struct simple_node link
;
2083 GLenum Type
; /**< GL_SYNC_FENCE */
2084 GLuint Name
; /**< Fence name */
2085 GLint RefCount
; /**< Reference count */
2086 GLboolean DeletePending
; /**< Object was deleted while there were still
2087 * live references (e.g., sync not yet finished)
2089 GLenum SyncCondition
;
2090 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2091 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2095 /** Set by #pragma directives */
2096 struct gl_sl_pragmas
2098 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2099 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2100 GLboolean Optimize
; /**< defaults on */
2101 GLboolean Debug
; /**< defaults off */
2106 * A GLSL vertex or fragment shader object.
2110 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2111 GLuint Name
; /**< AKA the handle */
2112 GLint RefCount
; /**< Reference count */
2113 GLboolean DeletePending
;
2114 GLboolean CompileStatus
;
2115 const GLchar
*Source
; /**< Source code string */
2116 GLuint SourceChecksum
; /**< for debug/logging purposes */
2117 struct gl_program
*Program
; /**< Post-compile assembly code */
2119 struct gl_sl_pragmas Pragmas
;
2121 unsigned Version
; /**< GLSL version used for linking */
2123 struct exec_list
*ir
;
2124 struct glsl_symbol_table
*symbols
;
2126 /** Shaders containing built-in functions that are used for linking. */
2127 struct gl_shader
*builtins_to_link
[16];
2128 unsigned num_builtins_to_link
;
2133 * A GLSL program object.
2134 * Basically a linked collection of vertex and fragment shaders.
2136 struct gl_shader_program
2138 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2139 GLuint Name
; /**< aka handle or ID */
2140 GLint RefCount
; /**< Reference count */
2141 GLboolean DeletePending
;
2143 GLuint NumShaders
; /**< number of attached shaders */
2144 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2147 * User-defined attribute bindings
2149 * These are set via \c glBindAttribLocation and are used to direct the
2150 * GLSL linker. These are \b not the values used in the compiled shader,
2151 * and they are \b not the values returned by \c glGetAttribLocation.
2153 struct string_to_uint_map
*AttributeBindings
;
2155 /** Transform feedback varyings */
2159 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2160 } TransformFeedback
;
2162 /** Geometry shader state - copied into gl_geometry_program at link time */
2165 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2166 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2167 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2170 /** Vertex shader state - copied into gl_vertex_program at link time */
2172 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2175 /* post-link info: */
2176 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2177 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2178 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2179 struct gl_uniform_list
*Uniforms
;
2180 struct gl_program_parameter_list
*Varying
;
2181 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2182 GLboolean Validated
;
2183 GLboolean _Used
; /**< Ever used for drawing? */
2186 unsigned Version
; /**< GLSL version used for linking */
2189 * Per-stage shaders resulting from the first stage of linking.
2191 * Set of linked shaders for this program. The array is accessed using the
2192 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2195 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2199 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2200 #define GLSL_LOG 0x2 /**< Write shaders to files */
2201 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2202 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2203 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2204 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2205 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2206 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2210 * Context state for GLSL vertex/fragment shaders.
2212 struct gl_shader_state
2215 * Programs used for rendering
2217 * There is a separate program set for each shader stage. If
2218 * GL_EXT_separate_shader_objects is not supported, each of these must point
2219 * to \c NULL or to the same program.
2221 struct gl_shader_program
*CurrentVertexProgram
;
2222 struct gl_shader_program
*CurrentGeometryProgram
;
2223 struct gl_shader_program
*CurrentFragmentProgram
;
2226 * Program used by glUniform calls.
2228 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2230 struct gl_shader_program
*ActiveProgram
;
2232 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2236 * Compiler options for a single GLSL shaders type
2238 struct gl_shader_compiler_options
2240 /** Driver-selectable options: */
2241 GLboolean EmitCondCodes
; /**< Use condition codes? */
2242 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2243 GLboolean EmitNoLoops
;
2244 GLboolean EmitNoFunctions
;
2245 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2246 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2247 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2248 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2249 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2252 * \name Forms of indirect addressing the driver cannot do.
2255 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2256 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2257 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2258 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2261 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2262 GLuint MaxUnrollIterations
;
2264 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2268 * Transform feedback object state
2270 struct gl_transform_feedback_object
2272 GLuint Name
; /**< AKA the object ID */
2274 GLboolean Active
; /**< Is transform feedback enabled? */
2275 GLboolean Paused
; /**< Is transform feedback paused? */
2277 /** The feedback buffers */
2278 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2279 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2281 /** Start of feedback data in dest buffer */
2282 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2283 /** Max data to put into dest buffer (in bytes) */
2284 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2289 * Context state for transform feedback.
2291 struct gl_transform_feedback
2293 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2295 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2297 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2298 struct gl_buffer_object
*CurrentBuffer
;
2300 /** The table of all transform feedback objects */
2301 struct _mesa_HashTable
*Objects
;
2303 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2304 struct gl_transform_feedback_object
*CurrentObject
;
2306 /** The default xform-fb object (Name==0) */
2307 struct gl_transform_feedback_object
*DefaultObject
;
2313 * State which can be shared by multiple contexts:
2315 struct gl_shared_state
2317 _glthread_Mutex Mutex
; /**< for thread safety */
2318 GLint RefCount
; /**< Reference count */
2319 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2320 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2322 /** Default texture objects (shared by all texture units) */
2323 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2325 /** Fallback texture used when a bound texture is incomplete */
2326 struct gl_texture_object
*FallbackTex
;
2329 * \name Thread safety and statechange notification for texture
2332 * \todo Improve the granularity of locking.
2335 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2336 GLuint TextureStateStamp
; /**< state notification for shared tex */
2339 /** Default buffer object for vertex arrays that aren't in VBOs */
2340 struct gl_buffer_object
*NullBufferObj
;
2343 * \name Vertex/geometry/fragment programs
2346 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2347 struct gl_vertex_program
*DefaultVertexProgram
;
2348 struct gl_fragment_program
*DefaultFragmentProgram
;
2349 struct gl_geometry_program
*DefaultGeometryProgram
;
2352 /* GL_ATI_fragment_shader */
2353 struct _mesa_HashTable
*ATIShaders
;
2354 struct ati_fragment_shader
*DefaultFragmentShader
;
2356 struct _mesa_HashTable
*BufferObjects
;
2358 /** Table of both gl_shader and gl_shader_program objects */
2359 struct _mesa_HashTable
*ShaderObjects
;
2361 /* GL_EXT_framebuffer_object */
2362 struct _mesa_HashTable
*RenderBuffers
;
2363 struct _mesa_HashTable
*FrameBuffers
;
2366 struct simple_node SyncObjects
;
2368 /** GL_ARB_sampler_objects */
2369 struct _mesa_HashTable
*SamplerObjects
;
2371 void *DriverData
; /**< Device driver shared state */
2378 * A renderbuffer stores colors or depth values or stencil values.
2379 * A framebuffer object will have a collection of these.
2380 * Data are read/written to the buffer with a handful of Get/Put functions.
2382 * Instances of this object are allocated with the Driver's NewRenderbuffer
2383 * hook. Drivers will likely wrap this class inside a driver-specific
2384 * class to simulate inheritance.
2386 struct gl_renderbuffer
2388 _glthread_Mutex Mutex
; /**< for thread safety */
2389 GLuint ClassID
; /**< Useful for drivers */
2392 GLuint Width
, Height
;
2393 GLint RowStride
; /**< Padded width in units of pixels */
2394 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2396 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2400 GLenum InternalFormat
; /**< The user-specified format */
2401 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2402 GL_STENCIL_INDEX. */
2403 gl_format Format
; /**< The actual renderbuffer memory format */
2405 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2406 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2408 /* Used to wrap one renderbuffer around another: */
2409 struct gl_renderbuffer
*Wrapped
;
2411 /* Delete this renderbuffer */
2412 void (*Delete
)(struct gl_renderbuffer
*rb
);
2414 /* Allocate new storage for this renderbuffer */
2415 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2416 GLenum internalFormat
,
2417 GLuint width
, GLuint height
);
2419 /* Lock/Unlock are called before/after calling the Get/Put functions.
2420 * Not sure this is the right place for these yet.
2421 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2422 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2425 /* Return a pointer to the element/pixel at (x,y).
2426 * Should return NULL if the buffer memory can't be directly addressed.
2428 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2431 /* Get/Read a row of values.
2432 * The values will be of format _BaseFormat and type DataType.
2434 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2435 GLint x
, GLint y
, void *values
);
2437 /* Get/Read values at arbitrary locations.
2438 * The values will be of format _BaseFormat and type DataType.
2440 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2441 const GLint x
[], const GLint y
[], void *values
);
2443 /* Put/Write a row of values.
2444 * The values will be of format _BaseFormat and type DataType.
2446 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2447 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2449 /* Put/Write a row of RGB values. This is a special-case routine that's
2450 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2451 * a common case for glDrawPixels and some triangle routines.
2452 * The values will be of format GL_RGB and type DataType.
2454 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2455 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2458 /* Put/Write a row of identical values.
2459 * The values will be of format _BaseFormat and type DataType.
2461 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2462 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2464 /* Put/Write values at arbitrary locations.
2465 * The values will be of format _BaseFormat and type DataType.
2467 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2468 const GLint x
[], const GLint y
[], const void *values
,
2469 const GLubyte
*mask
);
2470 /* Put/Write identical values at arbitrary locations.
2471 * The values will be of format _BaseFormat and type DataType.
2473 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2474 GLuint count
, const GLint x
[], const GLint y
[],
2475 const void *value
, const GLubyte
*mask
);
2480 * A renderbuffer attachment points to either a texture object (and specifies
2481 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2483 struct gl_renderbuffer_attachment
2485 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2489 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2490 * application supplied renderbuffer object.
2492 struct gl_renderbuffer
*Renderbuffer
;
2495 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2496 * supplied texture object.
2498 struct gl_texture_object
*Texture
;
2499 GLuint TextureLevel
; /**< Attached mipmap level. */
2500 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2501 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2502 * and 2D array textures */
2507 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2508 * In C++ terms, think of this as a base class from which device drivers
2509 * will make derived classes.
2511 struct gl_framebuffer
2513 _glthread_Mutex Mutex
; /**< for thread safety */
2515 * If zero, this is a window system framebuffer. If non-zero, this
2516 * is a FBO framebuffer; note that for some devices (i.e. those with
2517 * a natural pixel coordinate system for FBOs that differs from the
2518 * OpenGL/Mesa coordinate system), this means that the viewport,
2519 * polygon face orientation, and polygon stipple will have to be inverted.
2524 GLboolean DeletePending
;
2527 * The framebuffer's visual. Immutable if this is a window system buffer.
2528 * Computed from attachments if user-made FBO.
2530 struct gl_config Visual
;
2532 GLboolean Initialized
;
2534 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2536 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2538 GLint _Xmin
, _Xmax
; /**< inclusive */
2539 GLint _Ymin
, _Ymax
; /**< exclusive */
2542 /** \name Derived Z buffer stuff */
2544 GLuint _DepthMax
; /**< Max depth buffer value */
2545 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2546 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2549 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2552 /** Integer color values */
2553 GLboolean _IntegerColor
;
2555 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2556 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2558 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2559 * attribute group and GL_PIXEL attribute group, respectively.
2561 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2562 GLenum ColorReadBuffer
;
2564 /** Computed from ColorDraw/ReadBuffer above */
2565 GLuint _NumColorDrawBuffers
;
2566 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2567 GLint _ColorReadBufferIndex
; /* -1 = None */
2568 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2569 struct gl_renderbuffer
*_ColorReadBuffer
;
2571 /** The Actual depth/stencil buffers to use. May be wrappers around the
2572 * depth/stencil buffers attached above. */
2573 struct gl_renderbuffer
*_DepthBuffer
;
2574 struct gl_renderbuffer
*_StencilBuffer
;
2576 /** Delete this framebuffer */
2577 void (*Delete
)(struct gl_framebuffer
*fb
);
2582 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2586 GLushort RangeMin
; /**< min value exponent */
2587 GLushort RangeMax
; /**< max value exponent */
2588 GLushort Precision
; /**< number of mantissa bits */
2593 * Limits for vertex, geometry and fragment programs/shaders.
2595 struct gl_program_constants
2597 /* logical limits */
2598 GLuint MaxInstructions
;
2599 GLuint MaxAluInstructions
;
2600 GLuint MaxTexInstructions
;
2601 GLuint MaxTexIndirections
;
2604 GLuint MaxAddressRegs
;
2605 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2606 GLuint MaxParameters
;
2607 GLuint MaxLocalParams
;
2608 GLuint MaxEnvParams
;
2609 /* native/hardware limits */
2610 GLuint MaxNativeInstructions
;
2611 GLuint MaxNativeAluInstructions
;
2612 GLuint MaxNativeTexInstructions
;
2613 GLuint MaxNativeTexIndirections
;
2614 GLuint MaxNativeAttribs
;
2615 GLuint MaxNativeTemps
;
2616 GLuint MaxNativeAddressRegs
;
2617 GLuint MaxNativeParameters
;
2619 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2620 /* ES 2.0 and GL_ARB_ES2_compatibility */
2621 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2622 struct gl_precision LowInt
, MediumInt
, HighInt
;
2627 * Constants which may be overridden by device driver during context creation
2628 * but are never changed after that.
2632 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2633 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2634 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2635 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2636 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2637 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2638 GLuint MaxTextureCoordUnits
;
2639 GLuint MaxTextureImageUnits
;
2640 GLuint MaxVertexTextureImageUnits
;
2641 GLuint MaxCombinedTextureImageUnits
;
2642 GLuint MaxGeometryTextureImageUnits
;
2643 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2644 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2645 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2646 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2648 GLuint MaxArrayLockSize
;
2652 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2653 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2654 GLfloat PointSizeGranularity
;
2655 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2656 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2657 GLfloat LineWidthGranularity
;
2659 GLuint MaxColorTableSize
;
2661 GLuint MaxClipPlanes
;
2663 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2664 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2666 GLuint MaxViewportWidth
, MaxViewportHeight
;
2668 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2669 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2670 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2671 GLuint MaxProgramMatrices
;
2672 GLuint MaxProgramMatrixStackDepth
;
2674 /** vertex array / buffer object bounds checking */
2675 GLboolean CheckArrayBounds
;
2677 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2679 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2680 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2681 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2683 /** Number of varying vectors between vertex and fragment shaders */
2685 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2686 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2688 /** GL_ARB_geometry_shader4 */
2689 GLuint MaxGeometryOutputVertices
;
2690 GLuint MaxGeometryTotalOutputComponents
;
2692 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2695 * Does the driver support real 32-bit integers? (Otherwise, integers are
2696 * simulated via floats.)
2698 GLboolean NativeIntegers
;
2701 * If the driver supports real 32-bit integers, what integer value should be
2702 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2704 GLuint UniformBooleanTrue
;
2706 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2707 GLbitfield SupportedBumpUnits
;
2710 * Maximum amount of time, measured in nanseconds, that the server can wait.
2712 GLuint64 MaxServerWaitTimeout
;
2714 /** GL_EXT_provoking_vertex */
2715 GLboolean QuadsFollowProvokingVertexConvention
;
2717 /** OpenGL version 3.0 */
2718 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2720 /** OpenGL version 3.2 */
2721 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2723 /** GL_EXT_transform_feedback */
2724 GLuint MaxTransformFeedbackSeparateAttribs
;
2725 GLuint MaxTransformFeedbackSeparateComponents
;
2726 GLuint MaxTransformFeedbackInterleavedComponents
;
2728 /** GL_EXT_gpu_shader4 */
2729 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2731 /* GL_EXT_framebuffer_sRGB */
2732 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2734 /* GL_ARB_robustness */
2735 GLenum ResetStrategy
;
2740 * Enable flag for each OpenGL extension. Different device drivers will
2741 * enable different extensions at runtime.
2743 struct gl_extensions
2745 GLboolean dummy
; /* don't remove this! */
2746 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2747 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2748 GLboolean ARB_ES2_compatibility
;
2749 GLboolean ARB_blend_func_extended
;
2750 GLboolean ARB_color_buffer_float
;
2751 GLboolean ARB_copy_buffer
;
2752 GLboolean ARB_depth_buffer_float
;
2753 GLboolean ARB_depth_clamp
;
2754 GLboolean ARB_depth_texture
;
2755 GLboolean ARB_draw_buffers_blend
;
2756 GLboolean ARB_draw_elements_base_vertex
;
2757 GLboolean ARB_draw_instanced
;
2758 GLboolean ARB_fragment_coord_conventions
;
2759 GLboolean ARB_fragment_program
;
2760 GLboolean ARB_fragment_program_shadow
;
2761 GLboolean ARB_fragment_shader
;
2762 GLboolean ARB_framebuffer_object
;
2763 GLboolean ARB_explicit_attrib_location
;
2764 GLboolean ARB_geometry_shader4
;
2765 GLboolean ARB_half_float_pixel
;
2766 GLboolean ARB_half_float_vertex
;
2767 GLboolean ARB_instanced_arrays
;
2768 GLboolean ARB_map_buffer_range
;
2769 GLboolean ARB_occlusion_query
;
2770 GLboolean ARB_occlusion_query2
;
2771 GLboolean ARB_point_sprite
;
2772 GLboolean ARB_sampler_objects
;
2773 GLboolean ARB_seamless_cube_map
;
2774 GLboolean ARB_shader_objects
;
2775 GLboolean ARB_shader_stencil_export
;
2776 GLboolean ARB_shader_texture_lod
;
2777 GLboolean ARB_shading_language_100
;
2778 GLboolean ARB_shadow
;
2779 GLboolean ARB_shadow_ambient
;
2781 GLboolean ARB_texture_border_clamp
;
2782 GLboolean ARB_texture_buffer_object
;
2783 GLboolean ARB_texture_compression_rgtc
;
2784 GLboolean ARB_texture_cube_map
;
2785 GLboolean ARB_texture_env_combine
;
2786 GLboolean ARB_texture_env_crossbar
;
2787 GLboolean ARB_texture_env_dot3
;
2788 GLboolean ARB_texture_float
;
2789 GLboolean ARB_texture_multisample
;
2790 GLboolean ARB_texture_non_power_of_two
;
2791 GLboolean ARB_texture_rg
;
2792 GLboolean ARB_texture_rgb10_a2ui
;
2793 GLboolean ARB_timer_query
;
2794 GLboolean ARB_transform_feedback2
;
2795 GLboolean ARB_transpose_matrix
;
2796 GLboolean ARB_uniform_buffer_object
;
2797 GLboolean ARB_vertex_array_object
;
2798 GLboolean ARB_vertex_program
;
2799 GLboolean ARB_vertex_shader
;
2800 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2801 GLboolean ARB_window_pos
;
2802 GLboolean EXT_blend_color
;
2803 GLboolean EXT_blend_equation_separate
;
2804 GLboolean EXT_blend_func_separate
;
2805 GLboolean EXT_blend_minmax
;
2806 GLboolean EXT_clip_volume_hint
;
2807 GLboolean EXT_compiled_vertex_array
;
2808 GLboolean EXT_depth_bounds_test
;
2809 GLboolean EXT_draw_buffers2
;
2810 GLboolean EXT_draw_range_elements
;
2811 GLboolean EXT_fog_coord
;
2812 GLboolean EXT_framebuffer_blit
;
2813 GLboolean EXT_framebuffer_multisample
;
2814 GLboolean EXT_framebuffer_object
;
2815 GLboolean EXT_framebuffer_sRGB
;
2816 GLboolean EXT_gpu_program_parameters
;
2817 GLboolean EXT_gpu_shader4
;
2818 GLboolean EXT_packed_depth_stencil
;
2819 GLboolean EXT_packed_float
;
2820 GLboolean EXT_packed_pixels
;
2821 GLboolean EXT_pixel_buffer_object
;
2822 GLboolean EXT_point_parameters
;
2823 GLboolean EXT_provoking_vertex
;
2824 GLboolean EXT_rescale_normal
;
2825 GLboolean EXT_shadow_funcs
;
2826 GLboolean EXT_secondary_color
;
2827 GLboolean EXT_separate_shader_objects
;
2828 GLboolean EXT_separate_specular_color
;
2829 GLboolean EXT_stencil_two_side
;
2830 GLboolean EXT_texture3D
;
2831 GLboolean EXT_texture_array
;
2832 GLboolean EXT_texture_compression_latc
;
2833 GLboolean EXT_texture_compression_s3tc
;
2834 GLboolean EXT_texture_env_dot3
;
2835 GLboolean EXT_texture_filter_anisotropic
;
2836 GLboolean EXT_texture_integer
;
2837 GLboolean EXT_texture_mirror_clamp
;
2838 GLboolean EXT_texture_shared_exponent
;
2839 GLboolean EXT_texture_snorm
;
2840 GLboolean EXT_texture_sRGB
;
2841 GLboolean EXT_texture_sRGB_decode
;
2842 GLboolean EXT_texture_swizzle
;
2843 GLboolean EXT_transform_feedback
;
2844 GLboolean EXT_timer_query
;
2845 GLboolean EXT_vertex_array_bgra
;
2846 GLboolean OES_standard_derivatives
;
2847 /* vendor extensions */
2848 GLboolean AMD_conservative_depth
;
2849 GLboolean AMD_seamless_cubemap_per_texture
;
2850 GLboolean APPLE_packed_pixels
;
2851 GLboolean APPLE_vertex_array_object
;
2852 GLboolean APPLE_object_purgeable
;
2853 GLboolean ATI_envmap_bumpmap
;
2854 GLboolean ATI_texture_compression_3dc
;
2855 GLboolean ATI_texture_mirror_once
;
2856 GLboolean ATI_texture_env_combine3
;
2857 GLboolean ATI_fragment_shader
;
2858 GLboolean ATI_separate_stencil
;
2859 GLboolean IBM_rasterpos_clip
;
2860 GLboolean IBM_multimode_draw_arrays
;
2861 GLboolean MESA_pack_invert
;
2862 GLboolean MESA_resize_buffers
;
2863 GLboolean MESA_ycbcr_texture
;
2864 GLboolean MESA_texture_array
;
2865 GLboolean NV_blend_square
;
2866 GLboolean NV_conditional_render
;
2867 GLboolean NV_fragment_program
;
2868 GLboolean NV_fragment_program_option
;
2869 GLboolean NV_light_max_exponent
;
2870 GLboolean NV_point_sprite
;
2871 GLboolean NV_primitive_restart
;
2872 GLboolean NV_texture_barrier
;
2873 GLboolean NV_texgen_reflection
;
2874 GLboolean NV_texture_env_combine4
;
2875 GLboolean NV_texture_rectangle
;
2876 GLboolean NV_vertex_program
;
2877 GLboolean NV_vertex_program1_1
;
2878 GLboolean SGIS_texture_lod
;
2879 GLboolean TDFX_texture_compression_FXT1
;
2881 GLboolean OES_EGL_image
;
2882 GLboolean OES_draw_texture
;
2883 GLboolean extension_sentinel
;
2884 /** The extension string */
2885 const GLubyte
*String
;
2886 /** Number of supported extensions */
2892 * A stack of matrices (projection, modelview, color, texture, etc).
2894 struct gl_matrix_stack
2896 GLmatrix
*Top
; /**< points into Stack */
2897 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2898 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2899 GLuint MaxDepth
; /**< size of Stack[] array */
2900 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2905 * \name Bits for image transfer operations
2906 * \sa __struct gl_contextRec::ImageTransferState.
2909 #define IMAGE_SCALE_BIAS_BIT 0x1
2910 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2911 #define IMAGE_MAP_COLOR_BIT 0x4
2912 #define IMAGE_CLAMP_BIT 0x800
2915 /** Pixel Transfer ops */
2916 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2917 IMAGE_SHIFT_OFFSET_BIT | \
2918 IMAGE_MAP_COLOR_BIT)
2921 * \name Bits to indicate what state has changed.
2924 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2925 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2926 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2927 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2928 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2929 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2930 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2931 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2932 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2933 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2934 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2935 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2936 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2937 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2938 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2939 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2940 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2941 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2942 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2943 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2944 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2945 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2946 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2947 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2948 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2949 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2950 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2951 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2952 #define _NEW_BUFFER_OBJECT (1 << 28)
2953 #define _NEW_FRAG_CLAMP (1 << 29)
2959 * \name Bits to track array state changes
2961 * Also used to summarize array enabled.
2964 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2965 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2966 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2967 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2968 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2969 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2970 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2971 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2972 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2973 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2974 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2975 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2976 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2977 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2978 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2979 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2980 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2981 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2982 #define _NEW_ARRAY_ALL 0xffffffff
2985 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2986 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2992 * \name A bunch of flags that we think might be useful to drivers.
2994 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
2997 #define DD_FLATSHADE 0x1
2998 #define DD_SEPARATE_SPECULAR 0x2
2999 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3000 #define DD_TRI_LIGHT_TWOSIDE 0x8
3001 #define DD_TRI_UNFILLED 0x10
3002 #define DD_TRI_SMOOTH 0x20
3003 #define DD_TRI_STIPPLE 0x40
3004 #define DD_TRI_OFFSET 0x80
3005 #define DD_LINE_SMOOTH 0x100
3006 #define DD_LINE_STIPPLE 0x200
3007 #define DD_POINT_SMOOTH 0x400
3008 #define DD_POINT_ATTEN 0x800
3009 #define DD_TRI_TWOSTENCIL 0x1000
3014 * \name Define the state changes under which each of these bits might change
3017 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3018 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3019 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3020 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3021 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3022 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3023 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3024 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3025 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3026 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3027 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3028 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3029 #define _DD_NEW_POINT_SIZE _NEW_POINT
3030 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3035 * Composite state flags
3038 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3048 /* This has to be included here. */
3053 * Display list flags.
3054 * Strictly this is a tnl-private concept, but it doesn't seem
3055 * worthwhile adding a tnl private structure just to hold this one bit
3058 #define DLIST_DANGLING_REFS 0x1
3061 /** Opaque declaration of display list payload data type */
3062 union gl_dlist_node
;
3066 * Provide a location where information about a display list can be
3067 * collected. Could be extended with driverPrivate structures,
3068 * etc. in the future.
3070 struct gl_display_list
3073 GLbitfield Flags
; /**< DLIST_x flags */
3074 /** The dlist commands are in a linked list of nodes */
3075 union gl_dlist_node
*Head
;
3080 * State used during display list compilation and execution.
3082 struct gl_dlist_state
3084 GLuint CallDepth
; /**< Current recursion calling depth */
3086 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3087 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3088 GLuint CurrentPos
; /**< Index into current block of nodes */
3090 GLvertexformat ListVtxfmt
;
3092 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3093 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3095 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3096 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3098 GLubyte ActiveIndex
;
3099 GLfloat CurrentIndex
;
3101 GLubyte ActiveEdgeFlag
;
3102 GLboolean CurrentEdgeFlag
;
3105 /* State known to have been set by the currently-compiling display
3106 * list. Used to eliminate some redundant state changes.
3114 * Enum for the OpenGL APIs we know about and may support.
3125 * Mesa rendering context.
3127 * This is the central context data structure for Mesa. Almost all
3128 * OpenGL state is contained in this structure.
3129 * Think of this as a base class from which device drivers will derive
3132 * The struct gl_context typedef names this structure.
3136 /** State possibly shared with other contexts in the address space */
3137 struct gl_shared_state
*Shared
;
3139 /** \name API function pointer tables */
3142 struct _glapi_table
*Save
; /**< Display list save functions */
3143 struct _glapi_table
*Exec
; /**< Execute functions */
3144 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3147 struct gl_config Visual
;
3148 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3149 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3150 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3151 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3154 * Device driver function pointer table
3156 struct dd_function_table Driver
;
3158 void *DriverCtx
; /**< Points to device driver context/state */
3160 /** Core/Driver constants */
3161 struct gl_constants Const
;
3163 /** \name The various 4x4 matrix stacks */
3165 struct gl_matrix_stack ModelviewMatrixStack
;
3166 struct gl_matrix_stack ProjectionMatrixStack
;
3167 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3168 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3169 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3172 /** Combined modelview and projection matrix */
3173 GLmatrix _ModelProjectMatrix
;
3175 /** \name Display lists */
3176 struct gl_dlist_state ListState
;
3178 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3179 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3181 /** Extension information */
3182 struct gl_extensions Extensions
;
3185 GLuint VersionMajor
, VersionMinor
;
3186 char *VersionString
;
3188 /** \name State attribute stack (for glPush/PopAttrib) */
3190 GLuint AttribStackDepth
;
3191 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3194 /** \name Renderer attribute groups
3196 * We define a struct for each attribute group to make pushing and popping
3197 * attributes easy. Also it's a good organization.
3200 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3201 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3202 struct gl_current_attrib Current
; /**< Current attributes */
3203 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3204 struct gl_eval_attrib Eval
; /**< Eval attributes */
3205 struct gl_fog_attrib Fog
; /**< Fog attributes */
3206 struct gl_hint_attrib Hint
; /**< Hint attributes */
3207 struct gl_light_attrib Light
; /**< Light attributes */
3208 struct gl_line_attrib Line
; /**< Line attributes */
3209 struct gl_list_attrib List
; /**< List attributes */
3210 struct gl_multisample_attrib Multisample
;
3211 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3212 struct gl_point_attrib Point
; /**< Point attributes */
3213 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3214 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3215 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3216 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3217 struct gl_texture_attrib Texture
; /**< Texture attributes */
3218 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3219 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3222 /** \name Client attribute stack */
3224 GLuint ClientAttribStackDepth
;
3225 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3228 /** \name Client attribute groups */
3230 struct gl_array_attrib Array
; /**< Vertex arrays */
3231 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3232 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3233 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3236 /** \name Other assorted state (not pushed/popped on attribute stack) */
3238 struct gl_pixelmaps PixelMaps
;
3240 struct gl_evaluators EvalMap
; /**< All evaluators */
3241 struct gl_feedback Feedback
; /**< Feedback */
3242 struct gl_selection Select
; /**< Selection */
3244 struct gl_program_state Program
; /**< general program state */
3245 struct gl_vertex_program_state VertexProgram
;
3246 struct gl_fragment_program_state FragmentProgram
;
3247 struct gl_geometry_program_state GeometryProgram
;
3248 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3250 struct gl_shader_state Shader
; /**< GLSL shader object state */
3251 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3253 struct gl_query_state Query
; /**< occlusion, timer queries */
3255 struct gl_transform_feedback TransformFeedback
;
3257 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3258 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3261 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3263 /* GL_EXT_framebuffer_object */
3264 struct gl_renderbuffer
*CurrentRenderbuffer
;
3266 GLenum ErrorValue
; /**< Last error code */
3268 /* GL_ARB_robustness */
3272 * Recognize and silence repeated error debug messages in buggy apps.
3274 const char *ErrorDebugFmtString
;
3275 GLuint ErrorDebugCount
;
3277 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3278 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3280 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3282 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3284 /** \name Derived state */
3286 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3287 * state validation so they need to always be current.
3289 GLbitfield _TriangleCaps
;
3290 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3291 GLfloat _EyeZDir
[3];
3292 GLfloat _ModelViewInvScale
;
3293 GLboolean _NeedEyeCoords
;
3294 GLboolean _ForceEyeCoords
;
3296 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3298 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3299 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3302 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3304 /** \name For debugging/development only */
3306 GLboolean FirstTimeCurrent
;
3309 /** software compression/decompression supported or not */
3310 GLboolean Mesa_DXTn
;
3312 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3315 * Use dp4 (rather than mul/mad) instructions for position
3318 GLboolean mvp_with_dp4
;
3321 * \name Hooks for module contexts.
3323 * These will eventually live in the driver or elsewhere.
3326 void *swrast_context
;
3327 void *swsetup_context
;
3328 void *swtnl_context
;
3330 struct st_context
*st
;
3337 extern int MESA_VERBOSE
;
3338 extern int MESA_DEBUG_FLAGS
;
3339 # define MESA_FUNCTION __FUNCTION__
3341 # define MESA_VERBOSE 0
3342 # define MESA_DEBUG_FLAGS 0
3343 # define MESA_FUNCTION "a function"
3350 /** The MESA_VERBOSE var is a bitmask of these flags */
3353 VERBOSE_VARRAY
= 0x0001,
3354 VERBOSE_TEXTURE
= 0x0002,
3355 VERBOSE_MATERIAL
= 0x0004,
3356 VERBOSE_PIPELINE
= 0x0008,
3357 VERBOSE_DRIVER
= 0x0010,
3358 VERBOSE_STATE
= 0x0020,
3359 VERBOSE_API
= 0x0040,
3360 VERBOSE_DISPLAY_LIST
= 0x0100,
3361 VERBOSE_LIGHTING
= 0x0200,
3362 VERBOSE_PRIMS
= 0x0400,
3363 VERBOSE_VERTS
= 0x0800,
3364 VERBOSE_DISASSEM
= 0x1000,
3365 VERBOSE_DRAW
= 0x2000,
3366 VERBOSE_SWAPBUFFERS
= 0x4000
3370 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3373 DEBUG_ALWAYS_FLUSH
= 0x1
3378 #endif /* MTYPES_H */