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 */
52 * Stencil buffer data type.
55 typedef GLubyte GLstencil
;
56 #elif STENCIL_BITS==16
57 typedef GLushort GLstencil
;
59 # error "illegal number of stencil bits"
64 * \name 64-bit extension of GLbitfield.
67 typedef GLuint64 GLbitfield64
;
69 /** Set a single bit */
70 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
74 * \name Some forward type declarations
77 struct _mesa_HashTable
;
78 struct gl_attrib_node
;
79 struct gl_list_extensions
;
81 struct gl_program_cache
;
82 struct gl_texture_object
;
85 struct gl_uniform_storage
;
89 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
90 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
91 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
92 #define PRIM_UNKNOWN (GL_POLYGON+3)
96 * Shader stages. Note that these will become 5 with tessellation.
97 * These MUST have the same values as gallium's PIPE_SHADER_*
101 MESA_SHADER_VERTEX
= 0,
102 MESA_SHADER_FRAGMENT
= 1,
103 MESA_SHADER_GEOMETRY
= 2,
104 MESA_SHADER_TYPES
= 3
110 * Indexes for vertex program attributes.
111 * GL_NV_vertex_program aliases generic attributes over the conventional
112 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
113 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
114 * generic attributes are distinct/separate).
119 VERT_ATTRIB_WEIGHT
= 1,
120 VERT_ATTRIB_NORMAL
= 2,
121 VERT_ATTRIB_COLOR0
= 3,
122 VERT_ATTRIB_COLOR1
= 4,
124 VERT_ATTRIB_COLOR_INDEX
= 6,
125 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
126 VERT_ATTRIB_EDGEFLAG
= 7,
127 VERT_ATTRIB_TEX0
= 8,
128 VERT_ATTRIB_TEX1
= 9,
129 VERT_ATTRIB_TEX2
= 10,
130 VERT_ATTRIB_TEX3
= 11,
131 VERT_ATTRIB_TEX4
= 12,
132 VERT_ATTRIB_TEX5
= 13,
133 VERT_ATTRIB_TEX6
= 14,
134 VERT_ATTRIB_TEX7
= 15,
135 VERT_ATTRIB_GENERIC0
= 16,
136 VERT_ATTRIB_GENERIC1
= 17,
137 VERT_ATTRIB_GENERIC2
= 18,
138 VERT_ATTRIB_GENERIC3
= 19,
139 VERT_ATTRIB_GENERIC4
= 20,
140 VERT_ATTRIB_GENERIC5
= 21,
141 VERT_ATTRIB_GENERIC6
= 22,
142 VERT_ATTRIB_GENERIC7
= 23,
143 VERT_ATTRIB_GENERIC8
= 24,
144 VERT_ATTRIB_GENERIC9
= 25,
145 VERT_ATTRIB_GENERIC10
= 26,
146 VERT_ATTRIB_GENERIC11
= 27,
147 VERT_ATTRIB_GENERIC12
= 28,
148 VERT_ATTRIB_GENERIC13
= 29,
149 VERT_ATTRIB_GENERIC14
= 30,
150 VERT_ATTRIB_GENERIC15
= 31,
155 * Bitflags for vertex attributes.
156 * These are used in bitfields in many places.
159 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
160 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
161 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
162 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
163 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
164 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
165 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
166 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
167 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
168 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
169 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
170 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
171 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
172 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
173 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
174 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
175 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
176 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
177 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
178 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
179 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
180 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
181 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
182 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
183 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
184 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
185 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
186 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
187 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
188 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
189 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
190 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
192 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
193 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
198 * Indexes for vertex program result attributes. Note that
199 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
200 * assumptions about the layout of this enum.
204 VERT_RESULT_HPOS
= 0,
205 VERT_RESULT_COL0
= 1,
206 VERT_RESULT_COL1
= 2,
207 VERT_RESULT_FOGC
= 3,
208 VERT_RESULT_TEX0
= 4,
209 VERT_RESULT_TEX1
= 5,
210 VERT_RESULT_TEX2
= 6,
211 VERT_RESULT_TEX3
= 7,
212 VERT_RESULT_TEX4
= 8,
213 VERT_RESULT_TEX5
= 9,
214 VERT_RESULT_TEX6
= 10,
215 VERT_RESULT_TEX7
= 11,
216 VERT_RESULT_PSIZ
= 12,
217 VERT_RESULT_BFC0
= 13,
218 VERT_RESULT_BFC1
= 14,
219 VERT_RESULT_EDGE
= 15,
220 VERT_RESULT_CLIP_VERTEX
= 16,
221 VERT_RESULT_CLIP_DIST0
= 17,
222 VERT_RESULT_CLIP_DIST1
= 18,
223 VERT_RESULT_VAR0
= 19, /**< shader varying */
224 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
228 /*********************************************/
231 * Indexes for geometry program attributes.
235 GEOM_ATTRIB_POSITION
= 0,
236 GEOM_ATTRIB_COLOR0
= 1,
237 GEOM_ATTRIB_COLOR1
= 2,
238 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
239 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
240 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
241 GEOM_ATTRIB_POINT_SIZE
= 6,
242 GEOM_ATTRIB_CLIP_VERTEX
= 7,
243 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
244 GEOM_ATTRIB_TEX_COORD
= 9,
246 GEOM_ATTRIB_VAR0
= 16,
247 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
251 * Bitflags for geometry attributes.
252 * These are used in bitfields in many places.
255 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
256 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
257 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
258 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
259 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
260 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
261 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
262 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
263 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
264 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
265 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
267 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
272 * Indexes for geometry program result attributes
277 GEOM_RESULT_COL0
= 1,
278 GEOM_RESULT_COL1
= 2,
279 GEOM_RESULT_SCOL0
= 3,
280 GEOM_RESULT_SCOL1
= 4,
281 GEOM_RESULT_FOGC
= 5,
282 GEOM_RESULT_TEX0
= 6,
283 GEOM_RESULT_TEX1
= 7,
284 GEOM_RESULT_TEX2
= 8,
285 GEOM_RESULT_TEX3
= 9,
286 GEOM_RESULT_TEX4
= 10,
287 GEOM_RESULT_TEX5
= 11,
288 GEOM_RESULT_TEX6
= 12,
289 GEOM_RESULT_TEX7
= 13,
290 GEOM_RESULT_PSIZ
= 14,
291 GEOM_RESULT_CLPV
= 15,
292 GEOM_RESULT_PRID
= 16,
293 GEOM_RESULT_LAYR
= 17,
294 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
295 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
296 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
301 * Indexes for fragment program input attributes. Note that
302 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
303 * assumptions about the layout of this enum.
307 FRAG_ATTRIB_WPOS
= 0,
308 FRAG_ATTRIB_COL0
= 1,
309 FRAG_ATTRIB_COL1
= 2,
310 FRAG_ATTRIB_FOGC
= 3,
311 FRAG_ATTRIB_TEX0
= 4,
312 FRAG_ATTRIB_TEX1
= 5,
313 FRAG_ATTRIB_TEX2
= 6,
314 FRAG_ATTRIB_TEX3
= 7,
315 FRAG_ATTRIB_TEX4
= 8,
316 FRAG_ATTRIB_TEX5
= 9,
317 FRAG_ATTRIB_TEX6
= 10,
318 FRAG_ATTRIB_TEX7
= 11,
319 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
320 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
321 FRAG_ATTRIB_CLIP_DIST0
= 14,
322 FRAG_ATTRIB_CLIP_DIST1
= 15,
323 FRAG_ATTRIB_VAR0
= 16, /**< shader varying */
324 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
329 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
331 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
333 * gl_vert_result values which have no corresponding gl_frag_attrib
334 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
335 * VERT_RESULT_EDGE) are converted to a value of -1.
338 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result
)
340 if (vert_result
>= VERT_RESULT_CLIP_DIST0
)
341 return vert_result
- VERT_RESULT_CLIP_DIST0
+ FRAG_ATTRIB_CLIP_DIST0
;
342 else if (vert_result
<= VERT_RESULT_TEX7
)
350 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
352 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
354 * gl_frag_attrib values which have no corresponding gl_vert_result
355 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
358 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib
)
360 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
362 else if (frag_attrib
>= FRAG_ATTRIB_CLIP_DIST0
)
363 return frag_attrib
- FRAG_ATTRIB_CLIP_DIST0
+ VERT_RESULT_CLIP_DIST0
;
370 * Bitflags for fragment program input attributes.
373 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
374 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
375 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
376 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
377 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
378 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
379 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
380 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
381 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
382 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
383 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
384 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
385 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
386 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
387 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
389 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
390 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
392 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
404 * Fragment program results
408 FRAG_RESULT_DEPTH
= 0,
409 FRAG_RESULT_STENCIL
= 1,
410 /* If a single color should be written to all render targets, this
411 * register is written. No FRAG_RESULT_DATAn will be written.
413 FRAG_RESULT_COLOR
= 2,
415 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
416 * or ARB_fragment_program fragment.color[n]) color results. If
417 * any are written, FRAG_RESULT_COLOR will not be written.
419 FRAG_RESULT_DATA0
= 3,
420 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
425 * Indexes for all renderbuffers
429 /* the four standard color buffers */
437 /* optional aux buffer */
439 /* generic renderbuffers */
452 * Bit flags for all renderbuffers
454 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
455 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
456 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
457 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
458 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
459 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
460 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
461 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
462 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
463 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
464 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
465 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
466 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
467 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
468 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
469 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
470 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
471 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
472 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
475 * Mask of all the color buffer bits (but not accum).
477 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
478 BUFFER_BIT_BACK_LEFT | \
479 BUFFER_BIT_FRONT_RIGHT | \
480 BUFFER_BIT_BACK_RIGHT | \
482 BUFFER_BIT_COLOR0 | \
483 BUFFER_BIT_COLOR1 | \
484 BUFFER_BIT_COLOR2 | \
485 BUFFER_BIT_COLOR3 | \
486 BUFFER_BIT_COLOR4 | \
487 BUFFER_BIT_COLOR5 | \
488 BUFFER_BIT_COLOR6 | \
493 * Framebuffer configuration (aka visual / pixelformat)
494 * Note: some of these fields should be boolean, but it appears that
495 * code in drivers/dri/common/util.c requires int-sized fields.
501 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
502 GLuint doubleBufferMode
;
505 GLboolean haveAccumBuffer
;
506 GLboolean haveDepthBuffer
;
507 GLboolean haveStencilBuffer
;
509 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
510 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
511 GLint rgbBits
; /* total bits for rgb */
512 GLint indexBits
; /* total bits for colorindex */
514 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
522 /* EXT_visual_rating / GLX 1.2 */
525 /* EXT_visual_info / GLX 1.2 */
526 GLint transparentPixel
;
527 /* colors are floats scaled to ints */
528 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
529 GLint transparentIndex
;
531 /* ARB_multisample / SGIS_multisample */
535 /* SGIX_pbuffer / GLX 1.3 */
536 GLint maxPbufferWidth
;
537 GLint maxPbufferHeight
;
538 GLint maxPbufferPixels
;
539 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
540 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
542 /* OML_swap_method */
545 /* EXT_texture_from_pixmap */
546 GLint bindToTextureRgb
;
547 GLint bindToTextureRgba
;
548 GLint bindToMipmapTexture
;
549 GLint bindToTextureTargets
;
552 /* EXT_framebuffer_sRGB */
558 * \name Bit flags used for updating material values.
561 #define MAT_ATTRIB_FRONT_AMBIENT 0
562 #define MAT_ATTRIB_BACK_AMBIENT 1
563 #define MAT_ATTRIB_FRONT_DIFFUSE 2
564 #define MAT_ATTRIB_BACK_DIFFUSE 3
565 #define MAT_ATTRIB_FRONT_SPECULAR 4
566 #define MAT_ATTRIB_BACK_SPECULAR 5
567 #define MAT_ATTRIB_FRONT_EMISSION 6
568 #define MAT_ATTRIB_BACK_EMISSION 7
569 #define MAT_ATTRIB_FRONT_SHININESS 8
570 #define MAT_ATTRIB_BACK_SHININESS 9
571 #define MAT_ATTRIB_FRONT_INDEXES 10
572 #define MAT_ATTRIB_BACK_INDEXES 11
573 #define MAT_ATTRIB_MAX 12
575 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
576 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
577 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
578 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
579 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
580 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
582 #define MAT_INDEX_AMBIENT 0
583 #define MAT_INDEX_DIFFUSE 1
584 #define MAT_INDEX_SPECULAR 2
586 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
587 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
588 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
589 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
590 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
591 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
592 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
593 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
594 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
595 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
596 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
597 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
600 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
601 MAT_BIT_FRONT_AMBIENT | \
602 MAT_BIT_FRONT_DIFFUSE | \
603 MAT_BIT_FRONT_SPECULAR | \
604 MAT_BIT_FRONT_SHININESS | \
605 MAT_BIT_FRONT_INDEXES)
607 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
608 MAT_BIT_BACK_AMBIENT | \
609 MAT_BIT_BACK_DIFFUSE | \
610 MAT_BIT_BACK_SPECULAR | \
611 MAT_BIT_BACK_SHININESS | \
612 MAT_BIT_BACK_INDEXES)
614 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
618 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
619 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
622 * Material shininess lookup table.
626 struct gl_shine_tab
*next
, *prev
;
627 GLfloat tab
[SHINE_TABLE_SIZE
+1];
634 * Light source state.
638 struct gl_light
*next
; /**< double linked list with sentinel */
639 struct gl_light
*prev
;
641 GLfloat Ambient
[4]; /**< ambient color */
642 GLfloat Diffuse
[4]; /**< diffuse color */
643 GLfloat Specular
[4]; /**< specular color */
644 GLfloat EyePosition
[4]; /**< position in eye coordinates */
645 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
646 GLfloat SpotExponent
;
647 GLfloat SpotCutoff
; /**< in degrees */
648 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
649 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
650 GLfloat ConstantAttenuation
;
651 GLfloat LinearAttenuation
;
652 GLfloat QuadraticAttenuation
;
653 GLboolean Enabled
; /**< On/off flag */
656 * \name Derived fields
659 GLbitfield _Flags
; /**< State */
661 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
662 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
663 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
664 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
665 GLfloat _VP_inf_spot_attenuation
;
667 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
668 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
669 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
670 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
671 GLfloat _dli
; /**< CI diffuse light intensity */
672 GLfloat _sli
; /**< CI specular light intensity */
682 GLfloat Ambient
[4]; /**< ambient color */
683 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
684 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
685 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
686 * or GL_SEPARATE_SPECULAR_COLOR */
695 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
700 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
702 struct gl_accum_attrib
704 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
709 * Used for storing clear color, texture border color, etc.
710 * The float values are typically unclamped.
721 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
723 struct gl_colorbuffer_attrib
725 GLuint ClearIndex
; /**< Index for glClear */
726 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
727 GLuint IndexMask
; /**< Color index write mask */
728 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
730 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
733 * \name alpha testing
736 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
737 GLenum AlphaFunc
; /**< Alpha test function */
738 GLfloat AlphaRefUnclamped
;
739 GLclampf AlphaRef
; /**< Alpha reference value */
746 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
748 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
749 * control, only on the fixed-pointness of the render target.
750 * The query does however depend on fragment color clamping.
752 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
753 GLfloat BlendColor
[4]; /**< Blending color */
757 GLenum SrcRGB
; /**< RGB blend source term */
758 GLenum DstRGB
; /**< RGB blend dest term */
759 GLenum SrcA
; /**< Alpha blend source term */
760 GLenum DstA
; /**< Alpha blend dest term */
761 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
762 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
763 } Blend
[MAX_DRAW_BUFFERS
];
764 /** Are the blend func terms currently different for each buffer/target? */
765 GLboolean _BlendFuncPerBuffer
;
766 /** Are the blend equations currently different for each buffer/target? */
767 GLboolean _BlendEquationPerBuffer
;
774 GLenum LogicOp
; /**< Logic operator */
775 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
776 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
779 GLboolean DitherFlag
; /**< Dither enable flag */
781 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
782 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
783 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
784 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
786 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
791 * Current attribute group (GL_CURRENT_BIT).
793 struct gl_current_attrib
796 * \name Current vertex attributes.
797 * \note Values are valid only after FLUSH_VERTICES has been called.
798 * \note Index and Edgeflag current values are stored as floats in the
799 * SIX and SEVEN attribute slots.
801 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
804 * \name Current raster position attributes (always valid).
805 * \note This set of attributes is very similar to the SWvertex struct.
808 GLfloat RasterPos
[4];
809 GLfloat RasterDistance
;
810 GLfloat RasterColor
[4];
811 GLfloat RasterSecondaryColor
[4];
812 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
813 GLboolean RasterPosValid
;
819 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
821 struct gl_depthbuffer_attrib
823 GLenum Func
; /**< Function for depth buffer compare */
824 GLclampd Clear
; /**< Value to clear depth buffer to */
825 GLboolean Test
; /**< Depth buffering enabled flag */
826 GLboolean Mask
; /**< Depth buffer writable? */
827 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
828 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
833 * Evaluator attribute group (GL_EVAL_BIT).
835 struct gl_eval_attrib
841 GLboolean Map1Color4
;
843 GLboolean Map1Normal
;
844 GLboolean Map1TextureCoord1
;
845 GLboolean Map1TextureCoord2
;
846 GLboolean Map1TextureCoord3
;
847 GLboolean Map1TextureCoord4
;
848 GLboolean Map1Vertex3
;
849 GLboolean Map1Vertex4
;
850 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
851 GLboolean Map2Color4
;
853 GLboolean Map2Normal
;
854 GLboolean Map2TextureCoord1
;
855 GLboolean Map2TextureCoord2
;
856 GLboolean Map2TextureCoord3
;
857 GLboolean Map2TextureCoord4
;
858 GLboolean Map2Vertex3
;
859 GLboolean Map2Vertex4
;
860 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
861 GLboolean AutoNormal
;
865 * \name Map Grid endpoints and divisions and calculated du values
869 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
870 GLint MapGrid2un
, MapGrid2vn
;
871 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
872 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
878 * Fog attribute group (GL_FOG_BIT).
882 GLboolean Enabled
; /**< Fog enabled flag */
883 GLfloat ColorUnclamped
[4]; /**< Fog color */
884 GLfloat Color
[4]; /**< Fog color */
885 GLfloat Density
; /**< Density >= 0.0 */
886 GLfloat Start
; /**< Start distance in eye coords */
887 GLfloat End
; /**< End distance in eye coords */
888 GLfloat Index
; /**< Fog index */
889 GLenum Mode
; /**< Fog mode */
890 GLboolean ColorSumEnabled
;
891 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
892 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
893 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
898 * \brief Layout qualifiers for gl_FragDepth.
900 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
901 * a layout qualifier.
903 * \see enum ir_depth_layout
905 enum gl_frag_depth_layout
{
906 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
907 FRAG_DEPTH_LAYOUT_ANY
,
908 FRAG_DEPTH_LAYOUT_GREATER
,
909 FRAG_DEPTH_LAYOUT_LESS
,
910 FRAG_DEPTH_LAYOUT_UNCHANGED
915 * Hint attribute group (GL_HINT_BIT).
917 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
919 struct gl_hint_attrib
921 GLenum PerspectiveCorrection
;
924 GLenum PolygonSmooth
;
926 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
927 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
928 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
929 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
936 #define LIGHT_SPOT 0x1
937 #define LIGHT_LOCAL_VIEWER 0x2
938 #define LIGHT_POSITIONAL 0x4
939 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
944 * Lighting attribute group (GL_LIGHT_BIT).
946 struct gl_light_attrib
948 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
949 struct gl_lightmodel Model
; /**< Lighting model */
952 * Must flush FLUSH_VERTICES before referencing:
955 struct gl_material Material
; /**< Includes front & back values */
958 GLboolean Enabled
; /**< Lighting enabled flag */
959 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
960 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
961 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
962 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
963 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
964 GLboolean ColorMaterialEnabled
;
965 GLenum ClampVertexColor
;
966 GLboolean _ClampVertexColor
;
968 struct gl_light EnabledList
; /**< List sentinel */
971 * Derived state for optimizations:
974 GLboolean _NeedEyeCoords
;
975 GLboolean _NeedVertices
; /**< Use fast shader? */
976 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
977 GLfloat _BaseColor
[2][3];
983 * Line attribute group (GL_LINE_BIT).
985 struct gl_line_attrib
987 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
988 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
989 GLushort StipplePattern
; /**< Stipple pattern */
990 GLint StippleFactor
; /**< Stipple repeat factor */
991 GLfloat Width
; /**< Line width */
996 * Display list attribute group (GL_LIST_BIT).
998 struct gl_list_attrib
1005 * Multisample attribute group (GL_MULTISAMPLE_BIT).
1007 struct gl_multisample_attrib
1010 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
1011 GLboolean SampleAlphaToCoverage
;
1012 GLboolean SampleAlphaToOne
;
1013 GLboolean SampleCoverage
;
1014 GLfloat SampleCoverageValue
;
1015 GLboolean SampleCoverageInvert
;
1020 * A pixelmap (see glPixelMap)
1025 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1026 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1031 * Collection of all pixelmaps
1035 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1036 struct gl_pixelmap GtoG
;
1037 struct gl_pixelmap BtoB
;
1038 struct gl_pixelmap AtoA
;
1039 struct gl_pixelmap ItoR
;
1040 struct gl_pixelmap ItoG
;
1041 struct gl_pixelmap ItoB
;
1042 struct gl_pixelmap ItoA
;
1043 struct gl_pixelmap ItoI
;
1044 struct gl_pixelmap StoS
;
1049 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1051 struct gl_pixel_attrib
1053 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1055 /*--- Begin Pixel Transfer State ---*/
1056 /* Fields are in the order in which they're applied... */
1058 /** Scale & Bias (index shift, offset) */
1060 GLfloat RedBias
, RedScale
;
1061 GLfloat GreenBias
, GreenScale
;
1062 GLfloat BlueBias
, BlueScale
;
1063 GLfloat AlphaBias
, AlphaScale
;
1064 GLfloat DepthBias
, DepthScale
;
1065 GLint IndexShift
, IndexOffset
;
1069 /* Note: actual pixel maps are not part of this attrib group */
1070 GLboolean MapColorFlag
;
1071 GLboolean MapStencilFlag
;
1073 /*--- End Pixel Transfer State ---*/
1076 GLfloat ZoomX
, ZoomY
;
1081 * Point attribute group (GL_POINT_BIT).
1083 struct gl_point_attrib
1085 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1086 GLfloat Size
; /**< User-specified point size */
1087 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1088 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1089 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1090 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1091 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1092 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1093 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1094 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1099 * Polygon attribute group (GL_POLYGON_BIT).
1101 struct gl_polygon_attrib
1103 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1104 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1105 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1106 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1107 GLboolean CullFlag
; /**< Culling on/off flag */
1108 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1109 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1110 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1111 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1112 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1113 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1114 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1115 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1120 * Scissor attributes (GL_SCISSOR_BIT).
1122 struct gl_scissor_attrib
1124 GLboolean Enabled
; /**< Scissor test enabled? */
1125 GLint X
, Y
; /**< Lower left corner of box */
1126 GLsizei Width
, Height
; /**< Size of box */
1131 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1133 * Three sets of stencil data are tracked so that OpenGL 2.0,
1134 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1135 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1136 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1137 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1138 * GL_EXT_stencil_two_side GL_BACK state.
1140 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1141 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1143 * The derived value \c _TestTwoSide is set when the front-face and back-face
1144 * stencil state are different.
1146 struct gl_stencil_attrib
1148 GLboolean Enabled
; /**< Enabled flag */
1149 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1150 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1151 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1152 GLboolean _TestTwoSide
;
1153 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1154 GLenum Function
[3]; /**< Stencil function */
1155 GLenum FailFunc
[3]; /**< Fail function */
1156 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1157 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1158 GLint Ref
[3]; /**< Reference value */
1159 GLuint ValueMask
[3]; /**< Value mask */
1160 GLuint WriteMask
[3]; /**< Write mask */
1161 GLuint Clear
; /**< Clear value */
1166 * An index for each type of texture object. These correspond to the GL
1167 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1168 * Note: the order is from highest priority to lowest priority.
1172 TEXTURE_BUFFER_INDEX
,
1173 TEXTURE_2D_ARRAY_INDEX
,
1174 TEXTURE_1D_ARRAY_INDEX
,
1175 TEXTURE_EXTERNAL_INDEX
,
1186 * Bit flags for each type of texture object
1187 * Used for Texture.Unit[]._ReallyEnabled flags.
1190 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1191 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1192 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1193 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1194 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1195 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1196 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1197 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1198 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1203 * TexGenEnabled flags.
1210 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1215 * Bit flag versions of the corresponding GL_ constants.
1218 #define TEXGEN_SPHERE_MAP 0x1
1219 #define TEXGEN_OBJ_LINEAR 0x2
1220 #define TEXGEN_EYE_LINEAR 0x4
1221 #define TEXGEN_REFLECTION_MAP_NV 0x8
1222 #define TEXGEN_NORMAL_MAP_NV 0x10
1224 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1225 TEXGEN_REFLECTION_MAP_NV | \
1226 TEXGEN_NORMAL_MAP_NV)
1227 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1228 TEXGEN_REFLECTION_MAP_NV | \
1229 TEXGEN_NORMAL_MAP_NV | \
1235 /** Tex-gen enabled for texture unit? */
1236 #define ENABLE_TEXGEN(unit) (1 << (unit))
1238 /** Non-identity texture matrix for texture unit? */
1239 #define ENABLE_TEXMAT(unit) (1 << (unit))
1243 * Texture image state. Drivers will typically create a subclass of this
1244 * with extra fields for memory buffers, etc.
1246 struct gl_texture_image
1248 GLint InternalFormat
; /**< Internal format as given by the user */
1249 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1250 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1251 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1252 * GL_DEPTH_STENCIL_EXT only. Used for
1253 * choosing TexEnv arithmetic.
1255 gl_format TexFormat
; /**< The actual texture memory format */
1257 GLuint Border
; /**< 0 or 1 */
1258 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1259 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1260 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1261 GLuint Width2
; /**< = Width - 2*Border */
1262 GLuint Height2
; /**< = Height - 2*Border */
1263 GLuint Depth2
; /**< = Depth - 2*Border */
1264 GLuint WidthLog2
; /**< = log2(Width2) */
1265 GLuint HeightLog2
; /**< = log2(Height2) */
1266 GLuint DepthLog2
; /**< = log2(Depth2) */
1267 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1269 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1270 GLuint Level
; /**< Which mipmap level am I? */
1271 /** Cube map face: index into gl_texture_object::Image[] array */
1277 * Indexes for cube map faces.
1292 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1293 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1295 struct gl_sampler_object
1300 GLenum WrapS
; /**< S-axis texture image wrap mode */
1301 GLenum WrapT
; /**< T-axis texture image wrap mode */
1302 GLenum WrapR
; /**< R-axis texture image wrap mode */
1303 GLenum MinFilter
; /**< minification filter */
1304 GLenum MagFilter
; /**< magnification filter */
1305 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1306 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1307 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1308 GLfloat LodBias
; /**< OpenGL 1.4 */
1309 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1310 GLenum CompareMode
; /**< GL_ARB_shadow */
1311 GLenum CompareFunc
; /**< GL_ARB_shadow */
1312 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1313 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1314 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1316 /* deprecated sampler state */
1317 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1322 * Texture object state. Contains the array of mipmap images, border color,
1323 * wrap modes, filter modes, and shadow/texcompare state.
1325 struct gl_texture_object
1327 _glthread_Mutex Mutex
; /**< for thread safety */
1328 GLint RefCount
; /**< reference count */
1329 GLuint Name
; /**< the user-visible texture object ID */
1330 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1332 struct gl_sampler_object Sampler
;
1334 GLfloat Priority
; /**< in [0,1] */
1335 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1336 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1337 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1338 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1339 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1340 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1341 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1342 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1343 GLboolean _Complete
; /**< Is texture object complete? */
1344 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1345 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1346 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1348 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1349 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1351 /** GL_ARB_texture_buffer_object */
1352 struct gl_buffer_object
*BufferObject
;
1353 GLenum BufferObjectFormat
;
1355 /** GL_OES_EGL_image_external */
1356 GLint RequiredTextureImageUnits
;
1359 * \name For device driver.
1360 * Note: instead of attaching driver data to this pointer, it's preferable
1361 * to instead use this struct as a base class for your own texture object
1362 * class. Driver->NewTextureObject() can be used to implement the
1365 void *DriverData
; /**< Arbitrary device driver data */
1369 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1370 #define MAX_COMBINER_TERMS 4
1374 * Texture combine environment state.
1376 struct gl_tex_env_combine_state
1378 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1379 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1380 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1381 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1382 GLenum SourceA
[MAX_COMBINER_TERMS
];
1383 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1384 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1385 GLenum OperandA
[MAX_COMBINER_TERMS
];
1386 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1387 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1388 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1389 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1394 * Texture coord generation state.
1398 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1399 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1400 GLfloat ObjectPlane
[4];
1401 GLfloat EyePlane
[4];
1406 * Texture unit state. Contains enable flags, texture environment/function/
1407 * combiners, texgen state, and pointers to current texture objects.
1409 struct gl_texture_unit
1411 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1412 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1414 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1415 GLclampf EnvColor
[4];
1416 GLfloat EnvColorUnclamped
[4];
1418 struct gl_texgen GenS
;
1419 struct gl_texgen GenT
;
1420 struct gl_texgen GenR
;
1421 struct gl_texgen GenQ
;
1422 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1423 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1425 GLfloat LodBias
; /**< for biasing mipmap levels */
1427 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1429 /** Current sampler object (GL_ARB_sampler_objects) */
1430 struct gl_sampler_object
*Sampler
;
1433 * \name GL_EXT_texture_env_combine
1435 struct gl_tex_env_combine_state Combine
;
1438 * Derived state based on \c EnvMode and the \c BaseFormat of the
1439 * currently enabled texture.
1441 struct gl_tex_env_combine_state _EnvMode
;
1444 * Currently enabled combiner state. This will point to either
1445 * \c Combine or \c _EnvMode.
1447 struct gl_tex_env_combine_state
*_CurrentCombine
;
1449 /** Current texture object pointers */
1450 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1452 /** Points to highest priority, complete and enabled texture object */
1453 struct gl_texture_object
*_Current
;
1458 * Texture attribute group (GL_TEXTURE_BIT).
1460 struct gl_texture_attrib
1462 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1463 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1465 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1467 /** GL_ARB_texture_buffer_object */
1468 struct gl_buffer_object
*BufferObject
;
1470 /** GL_ARB_seamless_cubemap */
1471 GLboolean CubeMapSeamless
;
1473 /** Texture units/samplers used by vertex or fragment texturing */
1474 GLbitfield _EnabledUnits
;
1476 /** Texture coord units/sets used for fragment texturing */
1477 GLbitfield _EnabledCoordUnits
;
1479 /** Texture coord units that have texgen enabled */
1480 GLbitfield _TexGenEnabled
;
1482 /** Texture coord units that have non-identity matrices */
1483 GLbitfield _TexMatEnabled
;
1485 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1486 GLbitfield _GenFlags
;
1491 * Data structure representing a single clip plane (e.g. one of the elements
1492 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1494 typedef GLfloat gl_clip_plane
[4];
1498 * Transformation attribute group (GL_TRANSFORM_BIT).
1500 struct gl_transform_attrib
1502 GLenum MatrixMode
; /**< Matrix mode */
1503 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1504 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1505 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1506 GLboolean Normalize
; /**< Normalize all normals? */
1507 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1508 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1509 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1511 GLfloat CullEyePos
[4];
1512 GLfloat CullObjPos
[4];
1517 * Viewport attribute group (GL_VIEWPORT_BIT).
1519 struct gl_viewport_attrib
1521 GLint X
, Y
; /**< position */
1522 GLsizei Width
, Height
; /**< size */
1523 GLfloat Near
, Far
; /**< Depth buffer range */
1524 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1529 * GL_ARB_vertex/pixel_buffer_object buffer object
1531 struct gl_buffer_object
1533 _glthread_Mutex Mutex
;
1536 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1537 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1538 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1539 /** Fields describing a mapped buffer */
1541 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1542 GLvoid
*Pointer
; /**< User-space address of mapping */
1543 GLintptr Offset
; /**< Mapped offset */
1544 GLsizeiptr Length
; /**< Mapped length */
1546 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1547 GLboolean Written
; /**< Ever written to? (for debugging) */
1548 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1553 * Client pixel packing/unpacking attributes
1555 struct gl_pixelstore_attrib
1563 GLboolean SwapBytes
;
1565 GLboolean Invert
; /**< GL_MESA_pack_invert */
1566 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1571 * Client vertex array attributes
1573 struct gl_client_array
1575 GLint Size
; /**< components per element (1,2,3,4) */
1576 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1577 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1578 GLsizei Stride
; /**< user-specified stride */
1579 GLsizei StrideB
; /**< actual stride in bytes */
1580 const GLubyte
*Ptr
; /**< Points to array data */
1581 GLboolean Enabled
; /**< Enabled flag is a boolean */
1582 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1583 GLboolean Integer
; /**< Integer-valued? */
1584 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1585 GLuint _ElementSize
; /**< size of each element in bytes */
1587 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1588 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1593 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1594 * extension, but a nice encapsulation in any case.
1596 struct gl_array_object
1598 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1602 _glthread_Mutex Mutex
;
1603 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1605 /** Conventional vertex arrays */
1607 struct gl_client_array Vertex
;
1608 struct gl_client_array Weight
;
1609 struct gl_client_array Normal
;
1610 struct gl_client_array Color
;
1611 struct gl_client_array SecondaryColor
;
1612 struct gl_client_array FogCoord
;
1613 struct gl_client_array Index
;
1614 struct gl_client_array EdgeFlag
;
1615 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1616 struct gl_client_array PointSize
;
1620 * Generic arrays for vertex programs/shaders.
1621 * For NV vertex programs, these attributes alias and take priority
1622 * over the conventional attribs above. For ARB vertex programs and
1623 * GLSL vertex shaders, these attributes are separate.
1625 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1627 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1628 GLbitfield _Enabled
;
1631 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1632 * we can determine the max legal (in bounds) glDrawElements array index.
1639 * Vertex array state
1641 struct gl_array_attrib
1643 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1644 struct gl_array_object
*ArrayObj
;
1646 /** The default vertex array object */
1647 struct gl_array_object
*DefaultArrayObj
;
1649 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1650 struct _mesa_HashTable
*Objects
;
1652 GLint ActiveTexture
; /**< Client Active Texture */
1653 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1654 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1656 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1657 GLboolean PrimitiveRestart
;
1658 GLuint RestartIndex
;
1660 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1661 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1663 /* GL_ARB_vertex_buffer_object */
1664 struct gl_buffer_object
*ArrayBufferObj
;
1665 struct gl_buffer_object
*ElementArrayBufferObj
;
1670 * Feedback buffer state
1675 GLbitfield _Mask
; /**< FB_* bits */
1683 * Selection buffer state
1687 GLuint
*Buffer
; /**< selection buffer */
1688 GLuint BufferSize
; /**< size of the selection buffer */
1689 GLuint BufferCount
; /**< number of values in the selection buffer */
1690 GLuint Hits
; /**< number of records in the selection buffer */
1691 GLuint NameStackDepth
; /**< name stack depth */
1692 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1693 GLboolean HitFlag
; /**< hit flag */
1694 GLfloat HitMinZ
; /**< minimum hit depth */
1695 GLfloat HitMaxZ
; /**< maximum hit depth */
1700 * 1-D Evaluator control points
1704 GLuint Order
; /**< Number of control points */
1705 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1706 GLfloat
*Points
; /**< Points to contiguous control points */
1711 * 2-D Evaluator control points
1715 GLuint Uorder
; /**< Number of control points in U dimension */
1716 GLuint Vorder
; /**< Number of control points in V dimension */
1719 GLfloat
*Points
; /**< Points to contiguous control points */
1724 * All evaluator control point state
1726 struct gl_evaluators
1732 struct gl_1d_map Map1Vertex3
;
1733 struct gl_1d_map Map1Vertex4
;
1734 struct gl_1d_map Map1Index
;
1735 struct gl_1d_map Map1Color4
;
1736 struct gl_1d_map Map1Normal
;
1737 struct gl_1d_map Map1Texture1
;
1738 struct gl_1d_map Map1Texture2
;
1739 struct gl_1d_map Map1Texture3
;
1740 struct gl_1d_map Map1Texture4
;
1741 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1748 struct gl_2d_map Map2Vertex3
;
1749 struct gl_2d_map Map2Vertex4
;
1750 struct gl_2d_map Map2Index
;
1751 struct gl_2d_map Map2Color4
;
1752 struct gl_2d_map Map2Normal
;
1753 struct gl_2d_map Map2Texture1
;
1754 struct gl_2d_map Map2Texture2
;
1755 struct gl_2d_map Map2Texture3
;
1756 struct gl_2d_map Map2Texture4
;
1757 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1763 * Names of the various vertex/fragment program register files, etc.
1765 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1766 * All values should fit in a 4-bit field.
1768 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1769 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1770 * be "uniform" variables since they can only be set outside glBegin/End.
1771 * They're also all stored in the same Parameters array.
1775 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1776 PROGRAM_INPUT
, /**< machine->Inputs[] */
1777 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1778 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1779 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1780 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1781 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1782 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1783 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1784 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1785 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1786 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1787 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1788 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1789 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1795 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1796 * one of these values.
1800 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1801 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1802 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1803 SYSTEM_VALUE_MAX
/**< Number of values */
1808 * The possible interpolation qualifiers that can be applied to a fragment
1809 * shader input in GLSL.
1811 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1812 * gl_fragment_program data structure to 0 causes the default behavior.
1814 enum glsl_interp_qualifier
1816 INTERP_QUALIFIER_NONE
= 0,
1817 INTERP_QUALIFIER_SMOOTH
,
1818 INTERP_QUALIFIER_FLAT
,
1819 INTERP_QUALIFIER_NOPERSPECTIVE
1823 /** Vertex and fragment instructions */
1824 struct prog_instruction
;
1825 struct gl_program_parameter_list
;
1826 struct gl_uniform_list
;
1828 /** Post-link transform feedback info. */
1829 struct gl_transform_feedback_info
{
1830 unsigned NumOutputs
;
1833 unsigned OutputRegister
;
1834 unsigned OutputBuffer
;
1835 unsigned NumComponents
;
1836 } Outputs
[MAX_PROGRAM_OUTPUTS
];
1840 * Base class for any kind of program object
1845 GLubyte
*String
; /**< Null-terminated program text */
1847 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1848 GLenum Format
; /**< String encoding format */
1851 struct prog_instruction
*Instructions
;
1853 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1854 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1855 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1856 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1857 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1858 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1859 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1860 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1863 /** Named parameters, constants, etc. from program text */
1864 struct gl_program_parameter_list
*Parameters
;
1865 /** Numbered local parameters */
1866 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1868 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1869 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1870 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1871 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1873 /** Bitmask of which register files are read/written with indirect
1874 * addressing. Mask of (1 << PROGRAM_x) bits.
1876 GLbitfield IndirectRegisterFiles
;
1878 /** Logical counts */
1880 GLuint NumInstructions
;
1881 GLuint NumTemporaries
;
1882 GLuint NumParameters
;
1883 GLuint NumAttributes
;
1884 GLuint NumAddressRegs
;
1885 GLuint NumAluInstructions
;
1886 GLuint NumTexInstructions
;
1887 GLuint NumTexIndirections
;
1889 /** Native, actual h/w counts */
1891 GLuint NumNativeInstructions
;
1892 GLuint NumNativeTemporaries
;
1893 GLuint NumNativeParameters
;
1894 GLuint NumNativeAttributes
;
1895 GLuint NumNativeAddressRegs
;
1896 GLuint NumNativeAluInstructions
;
1897 GLuint NumNativeTexInstructions
;
1898 GLuint NumNativeTexIndirections
;
1903 /** Vertex program object */
1904 struct gl_vertex_program
1906 struct gl_program Base
; /**< base class */
1907 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1908 GLboolean IsPositionInvariant
;
1909 GLboolean UsesClipDistance
;
1913 /** Geometry program object */
1914 struct gl_geometry_program
1916 struct gl_program Base
; /**< base class */
1919 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1920 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1921 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1925 /** Fragment program object */
1926 struct gl_fragment_program
1928 struct gl_program Base
; /**< base class */
1929 GLboolean UsesKill
; /**< shader uses KIL instruction */
1930 GLboolean OriginUpperLeft
;
1931 GLboolean PixelCenterInteger
;
1932 enum gl_frag_depth_layout FragDepthLayout
;
1935 * GLSL interpolation qualifier associated with each fragment shader input.
1936 * For inputs that do not have an interpolation qualifier specified in
1937 * GLSL, the value is INTERP_QUALIFIER_NONE.
1939 enum glsl_interp_qualifier InterpQualifier
[FRAG_ATTRIB_MAX
];
1944 * State common to vertex and fragment programs.
1946 struct gl_program_state
1948 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1949 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1954 * Context state for vertex programs.
1956 struct gl_vertex_program_state
1958 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1959 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1960 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1961 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1962 /** Computed two sided lighting for fixed function/programs. */
1963 GLboolean _TwoSideEnabled
;
1964 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1966 /** Currently enabled and valid vertex program (including internal
1967 * programs, user-defined vertex programs and GLSL vertex shaders).
1968 * This is the program we must use when rendering.
1970 struct gl_vertex_program
*_Current
;
1972 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1974 /* For GL_NV_vertex_program only: */
1975 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1976 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1978 /** Should fixed-function T&L be implemented with a vertex prog? */
1979 GLboolean _MaintainTnlProgram
;
1981 /** Program to emulate fixed-function T&L (see above) */
1982 struct gl_vertex_program
*_TnlProgram
;
1984 /** Cache of fixed-function programs */
1985 struct gl_program_cache
*Cache
;
1987 GLboolean _Overriden
;
1992 * Context state for geometry programs.
1994 struct gl_geometry_program_state
1996 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1997 GLboolean _Enabled
; /**< Enabled and valid program? */
1998 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2000 /** Currently enabled and valid program (including internal programs
2001 * and compiled shader programs).
2003 struct gl_geometry_program
*_Current
;
2005 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2007 /** Cache of fixed-function programs */
2008 struct gl_program_cache
*Cache
;
2012 * Context state for fragment programs.
2014 struct gl_fragment_program_state
2016 GLboolean Enabled
; /**< User-set fragment program enable flag */
2017 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2018 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2020 /** Currently enabled and valid fragment program (including internal
2021 * programs, user-defined fragment programs and GLSL fragment shaders).
2022 * This is the program we must use when rendering.
2024 struct gl_fragment_program
*_Current
;
2026 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2028 /** Should fixed-function texturing be implemented with a fragment prog? */
2029 GLboolean _MaintainTexEnvProgram
;
2031 /** Program to emulate fixed-function texture env/combine (see above) */
2032 struct gl_fragment_program
*_TexEnvProgram
;
2034 /** Cache of fixed-function programs */
2035 struct gl_program_cache
*Cache
;
2040 * ATI_fragment_shader runtime state
2042 #define ATI_FS_INPUT_PRIMARY 0
2043 #define ATI_FS_INPUT_SECONDARY 1
2045 struct atifs_instruction
;
2046 struct atifs_setupinst
;
2049 * ATI fragment shader
2051 struct ati_fragment_shader
2055 struct atifs_instruction
*Instructions
[2];
2056 struct atifs_setupinst
*SetupInst
[2];
2057 GLfloat Constants
[8][4];
2058 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2059 GLubyte numArithInstr
[2];
2060 GLubyte regsAssigned
[2];
2061 GLubyte NumPasses
; /**< 1 or 2 */
2063 GLubyte last_optype
;
2064 GLboolean interpinp1
;
2070 * Context state for GL_ATI_fragment_shader
2072 struct gl_ati_fragment_shader_state
2075 GLboolean _Enabled
; /**< enabled and valid shader? */
2076 GLboolean Compiling
;
2077 GLfloat GlobalConstants
[8][4];
2078 struct ati_fragment_shader
*Current
;
2083 * Occlusion/timer query object.
2085 struct gl_query_object
2087 GLenum Target
; /**< The query target, when active */
2088 GLuint Id
; /**< hash table ID/name */
2089 GLuint64EXT Result
; /**< the counter */
2090 GLboolean Active
; /**< inside Begin/EndQuery */
2091 GLboolean Ready
; /**< result is ready? */
2096 * Context state for query objects.
2098 struct gl_query_state
2100 struct _mesa_HashTable
*QueryObjects
;
2101 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2102 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2104 /** GL_NV_conditional_render */
2105 struct gl_query_object
*CondRenderQuery
;
2107 /** GL_EXT_transform_feedback */
2108 struct gl_query_object
*PrimitivesGenerated
;
2109 struct gl_query_object
*PrimitivesWritten
;
2111 /** GL_ARB_timer_query */
2112 struct gl_query_object
*TimeElapsed
;
2114 GLenum CondRenderMode
;
2118 /** Sync object state */
2119 struct gl_sync_object
{
2120 struct simple_node link
;
2121 GLenum Type
; /**< GL_SYNC_FENCE */
2122 GLuint Name
; /**< Fence name */
2123 GLint RefCount
; /**< Reference count */
2124 GLboolean DeletePending
; /**< Object was deleted while there were still
2125 * live references (e.g., sync not yet finished)
2127 GLenum SyncCondition
;
2128 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2129 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2133 /** Set by #pragma directives */
2134 struct gl_sl_pragmas
2136 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2137 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2138 GLboolean Optimize
; /**< defaults on */
2139 GLboolean Debug
; /**< defaults off */
2144 * A GLSL vertex or fragment shader object.
2148 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2149 GLuint Name
; /**< AKA the handle */
2150 GLint RefCount
; /**< Reference count */
2151 GLboolean DeletePending
;
2152 GLboolean CompileStatus
;
2153 const GLchar
*Source
; /**< Source code string */
2154 GLuint SourceChecksum
; /**< for debug/logging purposes */
2155 struct gl_program
*Program
; /**< Post-compile assembly code */
2157 struct gl_sl_pragmas Pragmas
;
2159 unsigned Version
; /**< GLSL version used for linking */
2161 struct exec_list
*ir
;
2162 struct glsl_symbol_table
*symbols
;
2164 /** Shaders containing built-in functions that are used for linking. */
2165 struct gl_shader
*builtins_to_link
[16];
2166 unsigned num_builtins_to_link
;
2171 * A GLSL program object.
2172 * Basically a linked collection of vertex and fragment shaders.
2174 struct gl_shader_program
2176 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2177 GLuint Name
; /**< aka handle or ID */
2178 GLint RefCount
; /**< Reference count */
2179 GLboolean DeletePending
;
2182 * Flags that the linker should not reject the program if it lacks
2183 * a vertex or fragment shader. GLES2 doesn't allow separate
2184 * shader objects, and would reject them. However, we internally
2185 * build separate shader objects for fixed function programs, which
2186 * we use for drivers/common/meta.c and for handling
2187 * _mesa_update_state with no program bound (for example in
2190 GLboolean InternalSeparateShader
;
2192 GLuint NumShaders
; /**< number of attached shaders */
2193 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2196 * User-defined attribute bindings
2198 * These are set via \c glBindAttribLocation and are used to direct the
2199 * GLSL linker. These are \b not the values used in the compiled shader,
2200 * and they are \b not the values returned by \c glGetAttribLocation.
2202 struct string_to_uint_map
*AttributeBindings
;
2205 * User-defined fragment data bindings
2207 * These are set via \c glBindFragDataLocation and are used to direct the
2208 * GLSL linker. These are \b not the values used in the compiled shader,
2209 * and they are \b not the values returned by \c glGetFragDataLocation.
2211 struct string_to_uint_map
*FragDataBindings
;
2213 /** Transform feedback varyings */
2217 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2218 } TransformFeedback
;
2220 /** Post-link transform feedback info. */
2221 struct gl_transform_feedback_info LinkedTransformFeedback
;
2223 /** Geometry shader state - copied into gl_geometry_program at link time */
2226 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2227 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2228 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2231 /** Vertex shader state - copied into gl_vertex_program at link time */
2233 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2236 /* post-link info: */
2237 unsigned NumUserUniformStorage
;
2238 struct gl_uniform_storage
*UniformStorage
;
2241 * Map of active uniform names to locations
2243 * Maps any active uniform that is not an array element to a location.
2244 * Each active uniform, including individual structure members will appear
2245 * in this map. This roughly corresponds to the set of names that would be
2246 * enumerated by \c glGetActiveUniform.
2248 struct string_to_uint_map
*UniformHash
;
2251 * Map from sampler unit to texture unit (set by glUniform1i())
2253 * A sampler unit is associated with each sampler uniform by the linker.
2254 * The sampler unit associated with each uniform is stored in the
2255 * \c gl_uniform_storage::sampler field.
2257 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2258 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2259 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2261 struct gl_program_parameter_list
*Varying
;
2262 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2263 GLboolean Validated
;
2264 GLboolean _Used
; /**< Ever used for drawing? */
2267 unsigned Version
; /**< GLSL version used for linking */
2270 * Per-stage shaders resulting from the first stage of linking.
2272 * Set of linked shaders for this program. The array is accessed using the
2273 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2276 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2280 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2281 #define GLSL_LOG 0x2 /**< Write shaders to files */
2282 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2283 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2284 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2285 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2286 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2287 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2291 * Context state for GLSL vertex/fragment shaders.
2293 struct gl_shader_state
2296 * Programs used for rendering
2298 * There is a separate program set for each shader stage. If
2299 * GL_EXT_separate_shader_objects is not supported, each of these must point
2300 * to \c NULL or to the same program.
2302 struct gl_shader_program
*CurrentVertexProgram
;
2303 struct gl_shader_program
*CurrentGeometryProgram
;
2304 struct gl_shader_program
*CurrentFragmentProgram
;
2307 * Program used by glUniform calls.
2309 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2311 struct gl_shader_program
*ActiveProgram
;
2313 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2317 * Compiler options for a single GLSL shaders type
2319 struct gl_shader_compiler_options
2321 /** Driver-selectable options: */
2322 GLboolean EmitCondCodes
; /**< Use condition codes? */
2323 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2324 GLboolean EmitNoLoops
;
2325 GLboolean EmitNoFunctions
;
2326 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2327 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2328 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2329 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2330 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2333 * \name Forms of indirect addressing the driver cannot do.
2336 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2337 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2338 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2339 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2342 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2343 GLuint MaxUnrollIterations
;
2345 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2349 * Transform feedback object state
2351 struct gl_transform_feedback_object
2353 GLuint Name
; /**< AKA the object ID */
2355 GLboolean Active
; /**< Is transform feedback enabled? */
2356 GLboolean Paused
; /**< Is transform feedback paused? */
2358 /** The feedback buffers */
2359 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2360 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2362 /** Start of feedback data in dest buffer */
2363 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2364 /** Max data to put into dest buffer (in bytes) */
2365 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2370 * Context state for transform feedback.
2372 struct gl_transform_feedback
2374 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2376 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2378 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2379 struct gl_buffer_object
*CurrentBuffer
;
2381 /** The table of all transform feedback objects */
2382 struct _mesa_HashTable
*Objects
;
2384 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2385 struct gl_transform_feedback_object
*CurrentObject
;
2387 /** The default xform-fb object (Name==0) */
2388 struct gl_transform_feedback_object
*DefaultObject
;
2394 * State which can be shared by multiple contexts:
2396 struct gl_shared_state
2398 _glthread_Mutex Mutex
; /**< for thread safety */
2399 GLint RefCount
; /**< Reference count */
2400 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2401 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2403 /** Default texture objects (shared by all texture units) */
2404 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2406 /** Fallback texture used when a bound texture is incomplete */
2407 struct gl_texture_object
*FallbackTex
;
2410 * \name Thread safety and statechange notification for texture
2413 * \todo Improve the granularity of locking.
2416 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2417 GLuint TextureStateStamp
; /**< state notification for shared tex */
2420 /** Default buffer object for vertex arrays that aren't in VBOs */
2421 struct gl_buffer_object
*NullBufferObj
;
2424 * \name Vertex/geometry/fragment programs
2427 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2428 struct gl_vertex_program
*DefaultVertexProgram
;
2429 struct gl_fragment_program
*DefaultFragmentProgram
;
2430 struct gl_geometry_program
*DefaultGeometryProgram
;
2433 /* GL_ATI_fragment_shader */
2434 struct _mesa_HashTable
*ATIShaders
;
2435 struct ati_fragment_shader
*DefaultFragmentShader
;
2437 struct _mesa_HashTable
*BufferObjects
;
2439 /** Table of both gl_shader and gl_shader_program objects */
2440 struct _mesa_HashTable
*ShaderObjects
;
2442 /* GL_EXT_framebuffer_object */
2443 struct _mesa_HashTable
*RenderBuffers
;
2444 struct _mesa_HashTable
*FrameBuffers
;
2447 struct simple_node SyncObjects
;
2449 /** GL_ARB_sampler_objects */
2450 struct _mesa_HashTable
*SamplerObjects
;
2452 void *DriverData
; /**< Device driver shared state */
2459 * A renderbuffer stores colors or depth values or stencil values.
2460 * A framebuffer object will have a collection of these.
2461 * Data are read/written to the buffer with a handful of Get/Put functions.
2463 * Instances of this object are allocated with the Driver's NewRenderbuffer
2464 * hook. Drivers will likely wrap this class inside a driver-specific
2465 * class to simulate inheritance.
2467 struct gl_renderbuffer
2469 _glthread_Mutex Mutex
; /**< for thread safety */
2470 GLuint ClassID
; /**< Useful for drivers */
2473 GLuint Width
, Height
;
2474 GLint RowStride
; /**< Padded width in units of pixels */
2475 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2477 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2481 GLenum InternalFormat
; /**< The user-specified format */
2482 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2483 GL_STENCIL_INDEX. */
2484 gl_format Format
; /**< The actual renderbuffer memory format */
2486 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2487 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2489 /* Used to wrap one renderbuffer around another: */
2490 struct gl_renderbuffer
*Wrapped
;
2492 /* Delete this renderbuffer */
2493 void (*Delete
)(struct gl_renderbuffer
*rb
);
2495 /* Allocate new storage for this renderbuffer */
2496 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2497 GLenum internalFormat
,
2498 GLuint width
, GLuint height
);
2500 /* Lock/Unlock are called before/after calling the Get/Put functions.
2501 * Not sure this is the right place for these yet.
2502 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2503 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2506 /* Return a pointer to the element/pixel at (x,y).
2507 * Should return NULL if the buffer memory can't be directly addressed.
2509 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2512 /* Get/Read a row of values.
2513 * The values will be of format _BaseFormat and type DataType.
2515 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2516 GLint x
, GLint y
, void *values
);
2518 /* Get/Read values at arbitrary locations.
2519 * The values will be of format _BaseFormat and type DataType.
2521 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2522 const GLint x
[], const GLint y
[], void *values
);
2524 /* Put/Write a row of values.
2525 * The values will be of format _BaseFormat and type DataType.
2527 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2528 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2530 /* Put/Write a row of RGB values. This is a special-case routine that's
2531 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2532 * a common case for glDrawPixels and some triangle routines.
2533 * The values will be of format GL_RGB and type DataType.
2535 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2536 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2539 /* Put/Write a row of identical values.
2540 * The values will be of format _BaseFormat and type DataType.
2542 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2543 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2545 /* Put/Write values at arbitrary locations.
2546 * The values will be of format _BaseFormat and type DataType.
2548 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2549 const GLint x
[], const GLint y
[], const void *values
,
2550 const GLubyte
*mask
);
2551 /* Put/Write identical values at arbitrary locations.
2552 * The values will be of format _BaseFormat and type DataType.
2554 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2555 GLuint count
, const GLint x
[], const GLint y
[],
2556 const void *value
, const GLubyte
*mask
);
2561 * A renderbuffer attachment points to either a texture object (and specifies
2562 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2564 struct gl_renderbuffer_attachment
2566 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2570 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2571 * application supplied renderbuffer object.
2573 struct gl_renderbuffer
*Renderbuffer
;
2576 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2577 * supplied texture object.
2579 struct gl_texture_object
*Texture
;
2580 GLuint TextureLevel
; /**< Attached mipmap level. */
2581 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2582 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2583 * and 2D array textures */
2588 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2589 * In C++ terms, think of this as a base class from which device drivers
2590 * will make derived classes.
2592 struct gl_framebuffer
2594 _glthread_Mutex Mutex
; /**< for thread safety */
2596 * If zero, this is a window system framebuffer. If non-zero, this
2597 * is a FBO framebuffer; note that for some devices (i.e. those with
2598 * a natural pixel coordinate system for FBOs that differs from the
2599 * OpenGL/Mesa coordinate system), this means that the viewport,
2600 * polygon face orientation, and polygon stipple will have to be inverted.
2605 GLboolean DeletePending
;
2608 * The framebuffer's visual. Immutable if this is a window system buffer.
2609 * Computed from attachments if user-made FBO.
2611 struct gl_config Visual
;
2613 GLboolean Initialized
;
2615 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2617 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2619 GLint _Xmin
, _Xmax
; /**< inclusive */
2620 GLint _Ymin
, _Ymax
; /**< exclusive */
2623 /** \name Derived Z buffer stuff */
2625 GLuint _DepthMax
; /**< Max depth buffer value */
2626 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2627 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2630 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2633 /** Integer color values */
2634 GLboolean _IntegerColor
;
2636 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2637 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2639 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2640 * attribute group and GL_PIXEL attribute group, respectively.
2642 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2643 GLenum ColorReadBuffer
;
2645 /** Computed from ColorDraw/ReadBuffer above */
2646 GLuint _NumColorDrawBuffers
;
2647 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2648 GLint _ColorReadBufferIndex
; /* -1 = None */
2649 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2650 struct gl_renderbuffer
*_ColorReadBuffer
;
2652 /** The Actual depth/stencil buffers to use. May be wrappers around the
2653 * depth/stencil buffers attached above. */
2654 struct gl_renderbuffer
*_DepthBuffer
;
2655 struct gl_renderbuffer
*_StencilBuffer
;
2657 /** Delete this framebuffer */
2658 void (*Delete
)(struct gl_framebuffer
*fb
);
2663 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2667 GLushort RangeMin
; /**< min value exponent */
2668 GLushort RangeMax
; /**< max value exponent */
2669 GLushort Precision
; /**< number of mantissa bits */
2674 * Limits for vertex, geometry and fragment programs/shaders.
2676 struct gl_program_constants
2678 /* logical limits */
2679 GLuint MaxInstructions
;
2680 GLuint MaxAluInstructions
;
2681 GLuint MaxTexInstructions
;
2682 GLuint MaxTexIndirections
;
2685 GLuint MaxAddressRegs
;
2686 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2687 GLuint MaxParameters
;
2688 GLuint MaxLocalParams
;
2689 GLuint MaxEnvParams
;
2690 /* native/hardware limits */
2691 GLuint MaxNativeInstructions
;
2692 GLuint MaxNativeAluInstructions
;
2693 GLuint MaxNativeTexInstructions
;
2694 GLuint MaxNativeTexIndirections
;
2695 GLuint MaxNativeAttribs
;
2696 GLuint MaxNativeTemps
;
2697 GLuint MaxNativeAddressRegs
;
2698 GLuint MaxNativeParameters
;
2700 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2701 /* ES 2.0 and GL_ARB_ES2_compatibility */
2702 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2703 struct gl_precision LowInt
, MediumInt
, HighInt
;
2708 * Constants which may be overridden by device driver during context creation
2709 * but are never changed after that.
2713 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2714 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2715 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2716 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2717 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2718 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2719 GLuint MaxTextureCoordUnits
;
2720 GLuint MaxTextureImageUnits
;
2721 GLuint MaxVertexTextureImageUnits
;
2722 GLuint MaxCombinedTextureImageUnits
;
2723 GLuint MaxGeometryTextureImageUnits
;
2724 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2725 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2726 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2727 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2729 GLuint MaxArrayLockSize
;
2733 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2734 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2735 GLfloat PointSizeGranularity
;
2736 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2737 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2738 GLfloat LineWidthGranularity
;
2740 GLuint MaxColorTableSize
;
2742 GLuint MaxClipPlanes
;
2744 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2745 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2747 GLuint MaxViewportWidth
, MaxViewportHeight
;
2749 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2750 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2751 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2752 GLuint MaxProgramMatrices
;
2753 GLuint MaxProgramMatrixStackDepth
;
2755 /** vertex array / buffer object bounds checking */
2756 GLboolean CheckArrayBounds
;
2758 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2760 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2761 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2762 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2764 /** Number of varying vectors between vertex and fragment shaders */
2766 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2767 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2769 /** GL_ARB_geometry_shader4 */
2770 GLuint MaxGeometryOutputVertices
;
2771 GLuint MaxGeometryTotalOutputComponents
;
2773 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2776 * Does the driver support real 32-bit integers? (Otherwise, integers are
2777 * simulated via floats.)
2779 GLboolean NativeIntegers
;
2782 * If the driver supports real 32-bit integers, what integer value should be
2783 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2785 GLuint UniformBooleanTrue
;
2787 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2788 GLbitfield SupportedBumpUnits
;
2791 * Maximum amount of time, measured in nanseconds, that the server can wait.
2793 GLuint64 MaxServerWaitTimeout
;
2795 /** GL_EXT_provoking_vertex */
2796 GLboolean QuadsFollowProvokingVertexConvention
;
2798 /** OpenGL version 3.0 */
2799 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2801 /** OpenGL version 3.2 */
2802 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2804 /** GL_EXT_transform_feedback */
2805 GLuint MaxTransformFeedbackSeparateAttribs
;
2806 GLuint MaxTransformFeedbackSeparateComponents
;
2807 GLuint MaxTransformFeedbackInterleavedComponents
;
2809 /** GL_EXT_gpu_shader4 */
2810 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2812 /* GL_EXT_framebuffer_sRGB */
2813 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2815 /* GL_ARB_robustness */
2816 GLenum ResetStrategy
;
2819 * Whether the implementation strips out and ignores texture borders.
2821 * Many GPU hardware implementations don't support rendering with texture
2822 * borders and mipmapped textures. (Note: not static border color, but the
2823 * old 1-pixel border around each edge). Implementations then have to do
2824 * slow fallbacks to be correct, or just ignore the border and be fast but
2825 * wrong. Setting the flag stripts the border off of TexImage calls,
2826 * providing "fast but wrong" at significantly reduced driver complexity.
2828 * Texture borders are deprecated in GL 3.0.
2830 GLboolean StripTextureBorder
;
2835 * Enable flag for each OpenGL extension. Different device drivers will
2836 * enable different extensions at runtime.
2838 struct gl_extensions
2840 GLboolean dummy
; /* don't remove this! */
2841 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2842 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2843 GLboolean ARB_ES2_compatibility
;
2844 GLboolean ARB_blend_func_extended
;
2845 GLboolean ARB_color_buffer_float
;
2846 GLboolean ARB_copy_buffer
;
2847 GLboolean ARB_depth_buffer_float
;
2848 GLboolean ARB_depth_clamp
;
2849 GLboolean ARB_depth_texture
;
2850 GLboolean ARB_draw_buffers_blend
;
2851 GLboolean ARB_draw_elements_base_vertex
;
2852 GLboolean ARB_draw_instanced
;
2853 GLboolean ARB_fragment_coord_conventions
;
2854 GLboolean ARB_fragment_program
;
2855 GLboolean ARB_fragment_program_shadow
;
2856 GLboolean ARB_fragment_shader
;
2857 GLboolean ARB_framebuffer_object
;
2858 GLboolean ARB_explicit_attrib_location
;
2859 GLboolean ARB_geometry_shader4
;
2860 GLboolean ARB_half_float_pixel
;
2861 GLboolean ARB_half_float_vertex
;
2862 GLboolean ARB_instanced_arrays
;
2863 GLboolean ARB_map_buffer_range
;
2864 GLboolean ARB_occlusion_query
;
2865 GLboolean ARB_occlusion_query2
;
2866 GLboolean ARB_point_sprite
;
2867 GLboolean ARB_sampler_objects
;
2868 GLboolean ARB_seamless_cube_map
;
2869 GLboolean ARB_shader_objects
;
2870 GLboolean ARB_shader_stencil_export
;
2871 GLboolean ARB_shader_texture_lod
;
2872 GLboolean ARB_shading_language_100
;
2873 GLboolean ARB_shadow
;
2874 GLboolean ARB_shadow_ambient
;
2876 GLboolean ARB_texture_border_clamp
;
2877 GLboolean ARB_texture_buffer_object
;
2878 GLboolean ARB_texture_compression_rgtc
;
2879 GLboolean ARB_texture_cube_map
;
2880 GLboolean ARB_texture_env_combine
;
2881 GLboolean ARB_texture_env_crossbar
;
2882 GLboolean ARB_texture_env_dot3
;
2883 GLboolean ARB_texture_float
;
2884 GLboolean ARB_texture_multisample
;
2885 GLboolean ARB_texture_non_power_of_two
;
2886 GLboolean ARB_texture_rg
;
2887 GLboolean ARB_texture_rgb10_a2ui
;
2888 GLboolean ARB_texture_storage
;
2889 GLboolean ARB_timer_query
;
2890 GLboolean ARB_transform_feedback2
;
2891 GLboolean ARB_transpose_matrix
;
2892 GLboolean ARB_uniform_buffer_object
;
2893 GLboolean ARB_vertex_array_object
;
2894 GLboolean ARB_vertex_program
;
2895 GLboolean ARB_vertex_shader
;
2896 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2897 GLboolean ARB_window_pos
;
2898 GLboolean EXT_blend_color
;
2899 GLboolean EXT_blend_equation_separate
;
2900 GLboolean EXT_blend_func_separate
;
2901 GLboolean EXT_blend_minmax
;
2902 GLboolean EXT_clip_volume_hint
;
2903 GLboolean EXT_compiled_vertex_array
;
2904 GLboolean EXT_depth_bounds_test
;
2905 GLboolean EXT_draw_buffers2
;
2906 GLboolean EXT_draw_range_elements
;
2907 GLboolean EXT_fog_coord
;
2908 GLboolean EXT_framebuffer_blit
;
2909 GLboolean EXT_framebuffer_multisample
;
2910 GLboolean EXT_framebuffer_object
;
2911 GLboolean EXT_framebuffer_sRGB
;
2912 GLboolean EXT_gpu_program_parameters
;
2913 GLboolean EXT_gpu_shader4
;
2914 GLboolean EXT_packed_depth_stencil
;
2915 GLboolean EXT_packed_float
;
2916 GLboolean EXT_packed_pixels
;
2917 GLboolean EXT_pixel_buffer_object
;
2918 GLboolean EXT_point_parameters
;
2919 GLboolean EXT_provoking_vertex
;
2920 GLboolean EXT_rescale_normal
;
2921 GLboolean EXT_shadow_funcs
;
2922 GLboolean EXT_secondary_color
;
2923 GLboolean EXT_separate_shader_objects
;
2924 GLboolean EXT_separate_specular_color
;
2925 GLboolean EXT_stencil_two_side
;
2926 GLboolean EXT_texture3D
;
2927 GLboolean EXT_texture_array
;
2928 GLboolean EXT_texture_compression_latc
;
2929 GLboolean EXT_texture_compression_s3tc
;
2930 GLboolean EXT_texture_env_dot3
;
2931 GLboolean EXT_texture_filter_anisotropic
;
2932 GLboolean EXT_texture_integer
;
2933 GLboolean EXT_texture_mirror_clamp
;
2934 GLboolean EXT_texture_shared_exponent
;
2935 GLboolean EXT_texture_snorm
;
2936 GLboolean EXT_texture_sRGB
;
2937 GLboolean EXT_texture_sRGB_decode
;
2938 GLboolean EXT_texture_swizzle
;
2939 GLboolean EXT_transform_feedback
;
2940 GLboolean EXT_timer_query
;
2941 GLboolean EXT_vertex_array_bgra
;
2942 GLboolean OES_standard_derivatives
;
2943 /* vendor extensions */
2944 GLboolean AMD_conservative_depth
;
2945 GLboolean AMD_seamless_cubemap_per_texture
;
2946 GLboolean APPLE_packed_pixels
;
2947 GLboolean APPLE_vertex_array_object
;
2948 GLboolean APPLE_object_purgeable
;
2949 GLboolean ATI_envmap_bumpmap
;
2950 GLboolean ATI_texture_compression_3dc
;
2951 GLboolean ATI_texture_mirror_once
;
2952 GLboolean ATI_texture_env_combine3
;
2953 GLboolean ATI_fragment_shader
;
2954 GLboolean ATI_separate_stencil
;
2955 GLboolean IBM_rasterpos_clip
;
2956 GLboolean IBM_multimode_draw_arrays
;
2957 GLboolean MESA_pack_invert
;
2958 GLboolean MESA_resize_buffers
;
2959 GLboolean MESA_ycbcr_texture
;
2960 GLboolean MESA_texture_array
;
2961 GLboolean NV_blend_square
;
2962 GLboolean NV_conditional_render
;
2963 GLboolean NV_fog_distance
;
2964 GLboolean NV_fragment_program
;
2965 GLboolean NV_fragment_program_option
;
2966 GLboolean NV_light_max_exponent
;
2967 GLboolean NV_point_sprite
;
2968 GLboolean NV_primitive_restart
;
2969 GLboolean NV_texture_barrier
;
2970 GLboolean NV_texgen_reflection
;
2971 GLboolean NV_texture_env_combine4
;
2972 GLboolean NV_texture_rectangle
;
2973 GLboolean NV_vertex_program
;
2974 GLboolean NV_vertex_program1_1
;
2975 GLboolean SGIS_texture_lod
;
2976 GLboolean TDFX_texture_compression_FXT1
;
2978 GLboolean OES_EGL_image
;
2979 GLboolean OES_draw_texture
;
2980 GLboolean OES_EGL_image_external
;
2981 GLboolean extension_sentinel
;
2982 /** The extension string */
2983 const GLubyte
*String
;
2984 /** Number of supported extensions */
2990 * A stack of matrices (projection, modelview, color, texture, etc).
2992 struct gl_matrix_stack
2994 GLmatrix
*Top
; /**< points into Stack */
2995 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2996 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2997 GLuint MaxDepth
; /**< size of Stack[] array */
2998 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3003 * \name Bits for image transfer operations
3004 * \sa __struct gl_contextRec::ImageTransferState.
3007 #define IMAGE_SCALE_BIAS_BIT 0x1
3008 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3009 #define IMAGE_MAP_COLOR_BIT 0x4
3010 #define IMAGE_CLAMP_BIT 0x800
3013 /** Pixel Transfer ops */
3014 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3015 IMAGE_SHIFT_OFFSET_BIT | \
3016 IMAGE_MAP_COLOR_BIT)
3019 * \name Bits to indicate what state has changed.
3022 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3023 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3024 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3025 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3026 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3027 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3028 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3029 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3030 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3031 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3032 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3033 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3034 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3035 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3036 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3037 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3038 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3039 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3040 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3041 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
3042 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3043 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3044 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3045 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3046 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3047 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3048 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3049 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3050 #define _NEW_BUFFER_OBJECT (1 << 28)
3051 #define _NEW_FRAG_CLAMP (1 << 29)
3057 * \name Bits to track array state changes
3059 * Also used to summarize array enabled.
3062 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
3063 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
3064 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
3065 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
3066 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
3067 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
3068 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
3069 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
3070 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
3071 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
3072 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
3073 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
3074 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
3075 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
3076 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
3077 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
3078 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
3079 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
3080 #define _NEW_ARRAY_ALL 0xffffffff
3083 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
3084 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
3090 * \name A bunch of flags that we think might be useful to drivers.
3092 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3095 #define DD_FLATSHADE 0x1
3096 #define DD_SEPARATE_SPECULAR 0x2
3097 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3098 #define DD_TRI_LIGHT_TWOSIDE 0x8
3099 #define DD_TRI_UNFILLED 0x10
3100 #define DD_TRI_SMOOTH 0x20
3101 #define DD_TRI_STIPPLE 0x40
3102 #define DD_TRI_OFFSET 0x80
3103 #define DD_LINE_SMOOTH 0x100
3104 #define DD_LINE_STIPPLE 0x200
3105 #define DD_POINT_SMOOTH 0x400
3106 #define DD_POINT_ATTEN 0x800
3107 #define DD_TRI_TWOSTENCIL 0x1000
3112 * \name Define the state changes under which each of these bits might change
3115 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3116 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3117 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3118 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3119 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3120 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3121 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3122 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3123 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3124 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3125 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3126 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3127 #define _DD_NEW_POINT_SIZE _NEW_POINT
3128 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3133 * Composite state flags
3136 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3146 /* This has to be included here. */
3151 * Display list flags.
3152 * Strictly this is a tnl-private concept, but it doesn't seem
3153 * worthwhile adding a tnl private structure just to hold this one bit
3156 #define DLIST_DANGLING_REFS 0x1
3159 /** Opaque declaration of display list payload data type */
3160 union gl_dlist_node
;
3164 * Provide a location where information about a display list can be
3165 * collected. Could be extended with driverPrivate structures,
3166 * etc. in the future.
3168 struct gl_display_list
3171 GLbitfield Flags
; /**< DLIST_x flags */
3172 /** The dlist commands are in a linked list of nodes */
3173 union gl_dlist_node
*Head
;
3178 * State used during display list compilation and execution.
3180 struct gl_dlist_state
3182 GLuint CallDepth
; /**< Current recursion calling depth */
3184 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3185 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3186 GLuint CurrentPos
; /**< Index into current block of nodes */
3188 GLvertexformat ListVtxfmt
;
3190 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3191 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3193 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3194 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3196 GLubyte ActiveIndex
;
3197 GLfloat CurrentIndex
;
3199 GLubyte ActiveEdgeFlag
;
3200 GLboolean CurrentEdgeFlag
;
3203 /* State known to have been set by the currently-compiling display
3204 * list. Used to eliminate some redundant state changes.
3212 * Enum for the OpenGL APIs we know about and may support.
3223 * Mesa rendering context.
3225 * This is the central context data structure for Mesa. Almost all
3226 * OpenGL state is contained in this structure.
3227 * Think of this as a base class from which device drivers will derive
3230 * The struct gl_context typedef names this structure.
3234 /** State possibly shared with other contexts in the address space */
3235 struct gl_shared_state
*Shared
;
3237 /** \name API function pointer tables */
3240 struct _glapi_table
*Save
; /**< Display list save functions */
3241 struct _glapi_table
*Exec
; /**< Execute functions */
3242 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3245 struct gl_config Visual
;
3246 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3247 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3248 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3249 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3252 * Device driver function pointer table
3254 struct dd_function_table Driver
;
3256 void *DriverCtx
; /**< Points to device driver context/state */
3258 /** Core/Driver constants */
3259 struct gl_constants Const
;
3261 /** \name The various 4x4 matrix stacks */
3263 struct gl_matrix_stack ModelviewMatrixStack
;
3264 struct gl_matrix_stack ProjectionMatrixStack
;
3265 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3266 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3267 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3270 /** Combined modelview and projection matrix */
3271 GLmatrix _ModelProjectMatrix
;
3273 /** \name Display lists */
3274 struct gl_dlist_state ListState
;
3276 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3277 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3279 /** Extension information */
3280 struct gl_extensions Extensions
;
3283 GLuint VersionMajor
, VersionMinor
;
3284 char *VersionString
;
3286 /** \name State attribute stack (for glPush/PopAttrib) */
3288 GLuint AttribStackDepth
;
3289 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3292 /** \name Renderer attribute groups
3294 * We define a struct for each attribute group to make pushing and popping
3295 * attributes easy. Also it's a good organization.
3298 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3299 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3300 struct gl_current_attrib Current
; /**< Current attributes */
3301 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3302 struct gl_eval_attrib Eval
; /**< Eval attributes */
3303 struct gl_fog_attrib Fog
; /**< Fog attributes */
3304 struct gl_hint_attrib Hint
; /**< Hint attributes */
3305 struct gl_light_attrib Light
; /**< Light attributes */
3306 struct gl_line_attrib Line
; /**< Line attributes */
3307 struct gl_list_attrib List
; /**< List attributes */
3308 struct gl_multisample_attrib Multisample
;
3309 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3310 struct gl_point_attrib Point
; /**< Point attributes */
3311 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3312 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3313 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3314 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3315 struct gl_texture_attrib Texture
; /**< Texture attributes */
3316 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3317 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3320 /** \name Client attribute stack */
3322 GLuint ClientAttribStackDepth
;
3323 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3326 /** \name Client attribute groups */
3328 struct gl_array_attrib Array
; /**< Vertex arrays */
3329 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3330 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3331 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3334 /** \name Other assorted state (not pushed/popped on attribute stack) */
3336 struct gl_pixelmaps PixelMaps
;
3338 struct gl_evaluators EvalMap
; /**< All evaluators */
3339 struct gl_feedback Feedback
; /**< Feedback */
3340 struct gl_selection Select
; /**< Selection */
3342 struct gl_program_state Program
; /**< general program state */
3343 struct gl_vertex_program_state VertexProgram
;
3344 struct gl_fragment_program_state FragmentProgram
;
3345 struct gl_geometry_program_state GeometryProgram
;
3346 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3348 struct gl_shader_state Shader
; /**< GLSL shader object state */
3349 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3351 struct gl_query_state Query
; /**< occlusion, timer queries */
3353 struct gl_transform_feedback TransformFeedback
;
3355 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3356 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3359 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3361 /* GL_EXT_framebuffer_object */
3362 struct gl_renderbuffer
*CurrentRenderbuffer
;
3364 GLenum ErrorValue
; /**< Last error code */
3366 /* GL_ARB_robustness */
3370 * Recognize and silence repeated error debug messages in buggy apps.
3372 const char *ErrorDebugFmtString
;
3373 GLuint ErrorDebugCount
;
3375 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3376 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3378 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3380 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3382 /** \name Derived state */
3384 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3385 * state validation so they need to always be current.
3387 GLbitfield _TriangleCaps
;
3388 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3389 GLfloat _EyeZDir
[3];
3390 GLfloat _ModelViewInvScale
;
3391 GLboolean _NeedEyeCoords
;
3392 GLboolean _ForceEyeCoords
;
3394 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3396 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3397 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3400 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3402 /** \name For debugging/development only */
3404 GLboolean FirstTimeCurrent
;
3407 /** software compression/decompression supported or not */
3408 GLboolean Mesa_DXTn
;
3410 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3413 * Use dp4 (rather than mul/mad) instructions for position
3416 GLboolean mvp_with_dp4
;
3419 * \name Hooks for module contexts.
3421 * These will eventually live in the driver or elsewhere.
3424 void *swrast_context
;
3425 void *swsetup_context
;
3426 void *swtnl_context
;
3428 struct st_context
*st
;
3435 extern int MESA_VERBOSE
;
3436 extern int MESA_DEBUG_FLAGS
;
3437 # define MESA_FUNCTION __FUNCTION__
3439 # define MESA_VERBOSE 0
3440 # define MESA_DEBUG_FLAGS 0
3441 # define MESA_FUNCTION "a function"
3448 /** The MESA_VERBOSE var is a bitmask of these flags */
3451 VERBOSE_VARRAY
= 0x0001,
3452 VERBOSE_TEXTURE
= 0x0002,
3453 VERBOSE_MATERIAL
= 0x0004,
3454 VERBOSE_PIPELINE
= 0x0008,
3455 VERBOSE_DRIVER
= 0x0010,
3456 VERBOSE_STATE
= 0x0020,
3457 VERBOSE_API
= 0x0040,
3458 VERBOSE_DISPLAY_LIST
= 0x0100,
3459 VERBOSE_LIGHTING
= 0x0200,
3460 VERBOSE_PRIMS
= 0x0400,
3461 VERBOSE_VERTS
= 0x0800,
3462 VERBOSE_DISASSEM
= 0x1000,
3463 VERBOSE_DRAW
= 0x2000,
3464 VERBOSE_SWAPBUFFERS
= 0x4000
3468 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3471 DEBUG_ALWAYS_FLUSH
= 0x1
3480 #endif /* MTYPES_H */