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 * \name 64-bit extension of GLbitfield.
55 typedef GLuint64 GLbitfield64
;
57 /** Set a single bit */
58 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
59 /** Set all bits up to excluding bit b */
60 #define BITFIELD64_MASK(b) \
61 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
62 /** Set count bits starting from bit b */
63 #define BITFIELD64_RANGE(b, count) \
64 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
68 * \name Some forward type declarations
71 struct _mesa_HashTable
;
72 struct gl_attrib_node
;
73 struct gl_list_extensions
;
75 struct gl_program_cache
;
76 struct gl_texture_object
;
79 struct gl_uniform_storage
;
83 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
84 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
85 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
86 #define PRIM_UNKNOWN (GL_POLYGON+3)
90 * Shader stages. Note that these will become 5 with tessellation.
91 * These MUST have the same values as gallium's PIPE_SHADER_*
95 MESA_SHADER_VERTEX
= 0,
96 MESA_SHADER_FRAGMENT
= 1,
97 MESA_SHADER_GEOMETRY
= 2,
104 * Indexes for vertex program attributes.
105 * GL_NV_vertex_program aliases generic attributes over the conventional
106 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
107 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
108 * generic attributes are distinct/separate).
113 VERT_ATTRIB_WEIGHT
= 1,
114 VERT_ATTRIB_NORMAL
= 2,
115 VERT_ATTRIB_COLOR0
= 3,
116 VERT_ATTRIB_COLOR1
= 4,
118 VERT_ATTRIB_COLOR_INDEX
= 6,
119 VERT_ATTRIB_EDGEFLAG
= 7,
120 VERT_ATTRIB_TEX0
= 8,
121 VERT_ATTRIB_TEX1
= 9,
122 VERT_ATTRIB_TEX2
= 10,
123 VERT_ATTRIB_TEX3
= 11,
124 VERT_ATTRIB_TEX4
= 12,
125 VERT_ATTRIB_TEX5
= 13,
126 VERT_ATTRIB_TEX6
= 14,
127 VERT_ATTRIB_TEX7
= 15,
128 VERT_ATTRIB_POINT_SIZE
= 16,
129 VERT_ATTRIB_GENERIC0
= 17,
130 VERT_ATTRIB_GENERIC1
= 18,
131 VERT_ATTRIB_GENERIC2
= 19,
132 VERT_ATTRIB_GENERIC3
= 20,
133 VERT_ATTRIB_GENERIC4
= 21,
134 VERT_ATTRIB_GENERIC5
= 22,
135 VERT_ATTRIB_GENERIC6
= 23,
136 VERT_ATTRIB_GENERIC7
= 24,
137 VERT_ATTRIB_GENERIC8
= 25,
138 VERT_ATTRIB_GENERIC9
= 26,
139 VERT_ATTRIB_GENERIC10
= 27,
140 VERT_ATTRIB_GENERIC11
= 28,
141 VERT_ATTRIB_GENERIC12
= 29,
142 VERT_ATTRIB_GENERIC13
= 30,
143 VERT_ATTRIB_GENERIC14
= 31,
144 VERT_ATTRIB_GENERIC15
= 32,
149 * Symbolic constats to help iterating over
150 * specific blocks of vertex attributes.
153 * includes all fixed function attributes as well as
154 * the aliased GL_NV_vertex_program shader attributes.
156 * include the classic texture coordinate attributes.
157 * Is a subset of VERT_ATTRIB_FF.
158 * VERT_ATTRIB_GENERIC_NV
159 * include the NV shader attributes.
160 * Is a subset of VERT_ATTRIB_FF.
161 * VERT_ATTRIB_GENERIC
162 * include the OpenGL 2.0+ GLSL generic shader attributes.
163 * These alias the generic GL_ARB_vertex_shader attributes.
165 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
166 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
168 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
169 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
171 #define VERT_ATTRIB_GENERIC_NV(i) (VERT_ATTRIB_POS + (i))
172 #define VERT_ATTRIB_GENERIC_NV_MAX MAX_VERTEX_GENERIC_ATTRIBS
174 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
175 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
178 * Bitflags for vertex attributes.
179 * These are used in bitfields in many places.
182 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
183 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
184 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
185 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
186 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
187 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
188 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
189 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
190 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
191 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
192 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
193 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
194 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
195 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
196 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
197 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
198 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
199 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
201 #define VERT_BIT(i) BITFIELD64_BIT(i)
202 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
204 #define VERT_BIT_FF(i) VERT_BIT(i)
205 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
206 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
207 #define VERT_BIT_TEX_ALL \
208 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
209 #define VERT_BIT_FF_NVALIAS \
210 BITFIELD64_RANGE(VERT_ATTRIB_POS, VERT_ATTRIB_TEX(VERT_ATTRIB_TEX_MAX))
212 #define VERT_BIT_GENERIC_NV(i) VERT_BIT(VERT_ATTRIB_GENERIC_NV(i))
213 #define VERT_BIT_GENERIC_NV_ALL \
214 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC_NV(0), VERT_ATTRIB_GENERIC_NV_MAX)
216 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
217 #define VERT_BIT_GENERIC_ALL \
218 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
223 * Indexes for vertex program result attributes. Note that
224 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
225 * assumptions about the layout of this enum.
229 VERT_RESULT_HPOS
= 0,
230 VERT_RESULT_COL0
= 1,
231 VERT_RESULT_COL1
= 2,
232 VERT_RESULT_FOGC
= 3,
233 VERT_RESULT_TEX0
= 4,
234 VERT_RESULT_TEX1
= 5,
235 VERT_RESULT_TEX2
= 6,
236 VERT_RESULT_TEX3
= 7,
237 VERT_RESULT_TEX4
= 8,
238 VERT_RESULT_TEX5
= 9,
239 VERT_RESULT_TEX6
= 10,
240 VERT_RESULT_TEX7
= 11,
241 VERT_RESULT_PSIZ
= 12,
242 VERT_RESULT_BFC0
= 13,
243 VERT_RESULT_BFC1
= 14,
244 VERT_RESULT_EDGE
= 15,
245 VERT_RESULT_CLIP_VERTEX
= 16,
246 VERT_RESULT_CLIP_DIST0
= 17,
247 VERT_RESULT_CLIP_DIST1
= 18,
248 VERT_RESULT_VAR0
= 19, /**< shader varying */
249 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
253 /*********************************************/
256 * Indexes for geometry program attributes.
260 GEOM_ATTRIB_POSITION
= 0,
261 GEOM_ATTRIB_COLOR0
= 1,
262 GEOM_ATTRIB_COLOR1
= 2,
263 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
264 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
265 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
266 GEOM_ATTRIB_POINT_SIZE
= 6,
267 GEOM_ATTRIB_CLIP_VERTEX
= 7,
268 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
269 GEOM_ATTRIB_TEX_COORD
= 9,
271 GEOM_ATTRIB_VAR0
= 16,
272 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
276 * Bitflags for geometry attributes.
277 * These are used in bitfields in many places.
280 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
281 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
282 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
283 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
284 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
285 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
286 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
287 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
288 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
289 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
290 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
292 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
297 * Indexes for geometry program result attributes
302 GEOM_RESULT_COL0
= 1,
303 GEOM_RESULT_COL1
= 2,
304 GEOM_RESULT_SCOL0
= 3,
305 GEOM_RESULT_SCOL1
= 4,
306 GEOM_RESULT_FOGC
= 5,
307 GEOM_RESULT_TEX0
= 6,
308 GEOM_RESULT_TEX1
= 7,
309 GEOM_RESULT_TEX2
= 8,
310 GEOM_RESULT_TEX3
= 9,
311 GEOM_RESULT_TEX4
= 10,
312 GEOM_RESULT_TEX5
= 11,
313 GEOM_RESULT_TEX6
= 12,
314 GEOM_RESULT_TEX7
= 13,
315 GEOM_RESULT_PSIZ
= 14,
316 GEOM_RESULT_CLPV
= 15,
317 GEOM_RESULT_PRID
= 16,
318 GEOM_RESULT_LAYR
= 17,
319 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
320 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
321 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
326 * Indexes for fragment program input attributes. Note that
327 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
328 * assumptions about the layout of this enum.
332 FRAG_ATTRIB_WPOS
= 0,
333 FRAG_ATTRIB_COL0
= 1,
334 FRAG_ATTRIB_COL1
= 2,
335 FRAG_ATTRIB_FOGC
= 3,
336 FRAG_ATTRIB_TEX0
= 4,
337 FRAG_ATTRIB_TEX1
= 5,
338 FRAG_ATTRIB_TEX2
= 6,
339 FRAG_ATTRIB_TEX3
= 7,
340 FRAG_ATTRIB_TEX4
= 8,
341 FRAG_ATTRIB_TEX5
= 9,
342 FRAG_ATTRIB_TEX6
= 10,
343 FRAG_ATTRIB_TEX7
= 11,
344 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
345 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
346 FRAG_ATTRIB_CLIP_DIST0
= 14,
347 FRAG_ATTRIB_CLIP_DIST1
= 15,
348 FRAG_ATTRIB_VAR0
= 16, /**< shader varying */
349 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
354 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
356 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
358 * gl_vert_result values which have no corresponding gl_frag_attrib
359 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
360 * VERT_RESULT_EDGE) are converted to a value of -1.
363 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result
)
365 if (vert_result
>= VERT_RESULT_CLIP_DIST0
)
366 return vert_result
- VERT_RESULT_CLIP_DIST0
+ FRAG_ATTRIB_CLIP_DIST0
;
367 else if (vert_result
<= VERT_RESULT_TEX7
)
375 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
377 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
379 * gl_frag_attrib values which have no corresponding gl_vert_result
380 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
383 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib
)
385 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
387 else if (frag_attrib
>= FRAG_ATTRIB_CLIP_DIST0
)
388 return frag_attrib
- FRAG_ATTRIB_CLIP_DIST0
+ VERT_RESULT_CLIP_DIST0
;
395 * Bitflags for fragment program input attributes.
398 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
399 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
400 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
401 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
402 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
403 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
404 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
405 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
406 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
407 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
408 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
409 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
410 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
411 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
412 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
414 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
415 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
417 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
429 * Fragment program results
433 FRAG_RESULT_DEPTH
= 0,
434 FRAG_RESULT_STENCIL
= 1,
435 /* If a single color should be written to all render targets, this
436 * register is written. No FRAG_RESULT_DATAn will be written.
438 FRAG_RESULT_COLOR
= 2,
440 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
441 * or ARB_fragment_program fragment.color[n]) color results. If
442 * any are written, FRAG_RESULT_COLOR will not be written.
444 FRAG_RESULT_DATA0
= 3,
445 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
450 * Indexes for all renderbuffers
454 /* the four standard color buffers */
462 /* optional aux buffer */
464 /* generic renderbuffers */
477 * Bit flags for all renderbuffers
479 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
480 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
481 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
482 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
483 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
484 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
485 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
486 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
487 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
488 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
489 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
490 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
491 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
492 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
493 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
494 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
495 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
496 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
497 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
500 * Mask of all the color buffer bits (but not accum).
502 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
503 BUFFER_BIT_BACK_LEFT | \
504 BUFFER_BIT_FRONT_RIGHT | \
505 BUFFER_BIT_BACK_RIGHT | \
507 BUFFER_BIT_COLOR0 | \
508 BUFFER_BIT_COLOR1 | \
509 BUFFER_BIT_COLOR2 | \
510 BUFFER_BIT_COLOR3 | \
511 BUFFER_BIT_COLOR4 | \
512 BUFFER_BIT_COLOR5 | \
513 BUFFER_BIT_COLOR6 | \
518 * Framebuffer configuration (aka visual / pixelformat)
519 * Note: some of these fields should be boolean, but it appears that
520 * code in drivers/dri/common/util.c requires int-sized fields.
526 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
527 GLuint doubleBufferMode
;
530 GLboolean haveAccumBuffer
;
531 GLboolean haveDepthBuffer
;
532 GLboolean haveStencilBuffer
;
534 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
535 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
536 GLint rgbBits
; /* total bits for rgb */
537 GLint indexBits
; /* total bits for colorindex */
539 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
547 /* EXT_visual_rating / GLX 1.2 */
550 /* EXT_visual_info / GLX 1.2 */
551 GLint transparentPixel
;
552 /* colors are floats scaled to ints */
553 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
554 GLint transparentIndex
;
556 /* ARB_multisample / SGIS_multisample */
560 /* SGIX_pbuffer / GLX 1.3 */
561 GLint maxPbufferWidth
;
562 GLint maxPbufferHeight
;
563 GLint maxPbufferPixels
;
564 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
565 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
567 /* OML_swap_method */
570 /* EXT_texture_from_pixmap */
571 GLint bindToTextureRgb
;
572 GLint bindToTextureRgba
;
573 GLint bindToMipmapTexture
;
574 GLint bindToTextureTargets
;
577 /* EXT_framebuffer_sRGB */
583 * \name Bit flags used for updating material values.
586 #define MAT_ATTRIB_FRONT_AMBIENT 0
587 #define MAT_ATTRIB_BACK_AMBIENT 1
588 #define MAT_ATTRIB_FRONT_DIFFUSE 2
589 #define MAT_ATTRIB_BACK_DIFFUSE 3
590 #define MAT_ATTRIB_FRONT_SPECULAR 4
591 #define MAT_ATTRIB_BACK_SPECULAR 5
592 #define MAT_ATTRIB_FRONT_EMISSION 6
593 #define MAT_ATTRIB_BACK_EMISSION 7
594 #define MAT_ATTRIB_FRONT_SHININESS 8
595 #define MAT_ATTRIB_BACK_SHININESS 9
596 #define MAT_ATTRIB_FRONT_INDEXES 10
597 #define MAT_ATTRIB_BACK_INDEXES 11
598 #define MAT_ATTRIB_MAX 12
600 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
601 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
602 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
603 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
604 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
605 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
607 #define MAT_INDEX_AMBIENT 0
608 #define MAT_INDEX_DIFFUSE 1
609 #define MAT_INDEX_SPECULAR 2
611 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
612 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
613 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
614 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
615 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
616 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
617 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
618 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
619 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
620 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
621 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
622 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
625 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
626 MAT_BIT_FRONT_AMBIENT | \
627 MAT_BIT_FRONT_DIFFUSE | \
628 MAT_BIT_FRONT_SPECULAR | \
629 MAT_BIT_FRONT_SHININESS | \
630 MAT_BIT_FRONT_INDEXES)
632 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
633 MAT_BIT_BACK_AMBIENT | \
634 MAT_BIT_BACK_DIFFUSE | \
635 MAT_BIT_BACK_SPECULAR | \
636 MAT_BIT_BACK_SHININESS | \
637 MAT_BIT_BACK_INDEXES)
639 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
643 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
644 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
647 * Material shininess lookup table.
651 struct gl_shine_tab
*next
, *prev
;
652 GLfloat tab
[SHINE_TABLE_SIZE
+1];
659 * Light source state.
663 struct gl_light
*next
; /**< double linked list with sentinel */
664 struct gl_light
*prev
;
666 GLfloat Ambient
[4]; /**< ambient color */
667 GLfloat Diffuse
[4]; /**< diffuse color */
668 GLfloat Specular
[4]; /**< specular color */
669 GLfloat EyePosition
[4]; /**< position in eye coordinates */
670 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
671 GLfloat SpotExponent
;
672 GLfloat SpotCutoff
; /**< in degrees */
673 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
674 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
675 GLfloat ConstantAttenuation
;
676 GLfloat LinearAttenuation
;
677 GLfloat QuadraticAttenuation
;
678 GLboolean Enabled
; /**< On/off flag */
681 * \name Derived fields
684 GLbitfield _Flags
; /**< State */
686 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
687 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
688 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
689 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
690 GLfloat _VP_inf_spot_attenuation
;
692 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
693 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
694 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
695 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
705 GLfloat Ambient
[4]; /**< ambient color */
706 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
707 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
708 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
709 * or GL_SEPARATE_SPECULAR_COLOR */
718 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
723 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
725 struct gl_accum_attrib
727 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
732 * Used for storing clear color, texture border color, etc.
733 * The float values are typically unclamped.
744 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
746 struct gl_colorbuffer_attrib
748 GLuint ClearIndex
; /**< Index for glClear */
749 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
750 GLuint IndexMask
; /**< Color index write mask */
751 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
753 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
756 * \name alpha testing
759 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
760 GLenum AlphaFunc
; /**< Alpha test function */
761 GLfloat AlphaRefUnclamped
;
762 GLclampf AlphaRef
; /**< Alpha reference value */
769 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
771 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
772 * control, only on the fixed-pointness of the render target.
773 * The query does however depend on fragment color clamping.
775 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
776 GLfloat BlendColor
[4]; /**< Blending color */
780 GLenum SrcRGB
; /**< RGB blend source term */
781 GLenum DstRGB
; /**< RGB blend dest term */
782 GLenum SrcA
; /**< Alpha blend source term */
783 GLenum DstA
; /**< Alpha blend dest term */
784 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
785 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
786 } Blend
[MAX_DRAW_BUFFERS
];
787 /** Are the blend func terms currently different for each buffer/target? */
788 GLboolean _BlendFuncPerBuffer
;
789 /** Are the blend equations currently different for each buffer/target? */
790 GLboolean _BlendEquationPerBuffer
;
797 GLenum LogicOp
; /**< Logic operator */
798 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
799 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
802 GLboolean DitherFlag
; /**< Dither enable flag */
804 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
805 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
806 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
807 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
809 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
814 * Current attribute group (GL_CURRENT_BIT).
816 struct gl_current_attrib
819 * \name Current vertex attributes.
820 * \note Values are valid only after FLUSH_VERTICES has been called.
821 * \note Index and Edgeflag current values are stored as floats in the
822 * SIX and SEVEN attribute slots.
824 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
827 * \name Current raster position attributes (always valid).
828 * \note This set of attributes is very similar to the SWvertex struct.
831 GLfloat RasterPos
[4];
832 GLfloat RasterDistance
;
833 GLfloat RasterColor
[4];
834 GLfloat RasterSecondaryColor
[4];
835 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
836 GLboolean RasterPosValid
;
842 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
844 struct gl_depthbuffer_attrib
846 GLenum Func
; /**< Function for depth buffer compare */
847 GLclampd Clear
; /**< Value to clear depth buffer to */
848 GLboolean Test
; /**< Depth buffering enabled flag */
849 GLboolean Mask
; /**< Depth buffer writable? */
850 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
851 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
856 * Evaluator attribute group (GL_EVAL_BIT).
858 struct gl_eval_attrib
864 GLboolean Map1Color4
;
866 GLboolean Map1Normal
;
867 GLboolean Map1TextureCoord1
;
868 GLboolean Map1TextureCoord2
;
869 GLboolean Map1TextureCoord3
;
870 GLboolean Map1TextureCoord4
;
871 GLboolean Map1Vertex3
;
872 GLboolean Map1Vertex4
;
873 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
874 GLboolean Map2Color4
;
876 GLboolean Map2Normal
;
877 GLboolean Map2TextureCoord1
;
878 GLboolean Map2TextureCoord2
;
879 GLboolean Map2TextureCoord3
;
880 GLboolean Map2TextureCoord4
;
881 GLboolean Map2Vertex3
;
882 GLboolean Map2Vertex4
;
883 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
884 GLboolean AutoNormal
;
888 * \name Map Grid endpoints and divisions and calculated du values
892 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
893 GLint MapGrid2un
, MapGrid2vn
;
894 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
895 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
901 * Fog attribute group (GL_FOG_BIT).
905 GLboolean Enabled
; /**< Fog enabled flag */
906 GLfloat ColorUnclamped
[4]; /**< Fog color */
907 GLfloat Color
[4]; /**< Fog color */
908 GLfloat Density
; /**< Density >= 0.0 */
909 GLfloat Start
; /**< Start distance in eye coords */
910 GLfloat End
; /**< End distance in eye coords */
911 GLfloat Index
; /**< Fog index */
912 GLenum Mode
; /**< Fog mode */
913 GLboolean ColorSumEnabled
;
914 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
915 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
916 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
921 * \brief Layout qualifiers for gl_FragDepth.
923 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
924 * a layout qualifier.
926 * \see enum ir_depth_layout
928 enum gl_frag_depth_layout
{
929 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
930 FRAG_DEPTH_LAYOUT_ANY
,
931 FRAG_DEPTH_LAYOUT_GREATER
,
932 FRAG_DEPTH_LAYOUT_LESS
,
933 FRAG_DEPTH_LAYOUT_UNCHANGED
938 * Hint attribute group (GL_HINT_BIT).
940 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
942 struct gl_hint_attrib
944 GLenum PerspectiveCorrection
;
947 GLenum PolygonSmooth
;
949 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
950 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
951 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
952 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
959 #define LIGHT_SPOT 0x1
960 #define LIGHT_LOCAL_VIEWER 0x2
961 #define LIGHT_POSITIONAL 0x4
962 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
967 * Lighting attribute group (GL_LIGHT_BIT).
969 struct gl_light_attrib
971 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
972 struct gl_lightmodel Model
; /**< Lighting model */
975 * Must flush FLUSH_VERTICES before referencing:
978 struct gl_material Material
; /**< Includes front & back values */
981 GLboolean Enabled
; /**< Lighting enabled flag */
982 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
983 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
984 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
985 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
986 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
987 GLboolean ColorMaterialEnabled
;
988 GLenum ClampVertexColor
;
989 GLboolean _ClampVertexColor
;
991 struct gl_light EnabledList
; /**< List sentinel */
994 * Derived state for optimizations:
997 GLboolean _NeedEyeCoords
;
998 GLboolean _NeedVertices
; /**< Use fast shader? */
999 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
1000 GLfloat _BaseColor
[2][3];
1006 * Line attribute group (GL_LINE_BIT).
1008 struct gl_line_attrib
1010 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
1011 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
1012 GLushort StipplePattern
; /**< Stipple pattern */
1013 GLint StippleFactor
; /**< Stipple repeat factor */
1014 GLfloat Width
; /**< Line width */
1019 * Display list attribute group (GL_LIST_BIT).
1021 struct gl_list_attrib
1028 * Multisample attribute group (GL_MULTISAMPLE_BIT).
1030 struct gl_multisample_attrib
1033 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
1034 GLboolean SampleAlphaToCoverage
;
1035 GLboolean SampleAlphaToOne
;
1036 GLboolean SampleCoverage
;
1037 GLfloat SampleCoverageValue
;
1038 GLboolean SampleCoverageInvert
;
1043 * A pixelmap (see glPixelMap)
1048 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1049 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1054 * Collection of all pixelmaps
1058 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1059 struct gl_pixelmap GtoG
;
1060 struct gl_pixelmap BtoB
;
1061 struct gl_pixelmap AtoA
;
1062 struct gl_pixelmap ItoR
;
1063 struct gl_pixelmap ItoG
;
1064 struct gl_pixelmap ItoB
;
1065 struct gl_pixelmap ItoA
;
1066 struct gl_pixelmap ItoI
;
1067 struct gl_pixelmap StoS
;
1072 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1074 struct gl_pixel_attrib
1076 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1078 /*--- Begin Pixel Transfer State ---*/
1079 /* Fields are in the order in which they're applied... */
1081 /** Scale & Bias (index shift, offset) */
1083 GLfloat RedBias
, RedScale
;
1084 GLfloat GreenBias
, GreenScale
;
1085 GLfloat BlueBias
, BlueScale
;
1086 GLfloat AlphaBias
, AlphaScale
;
1087 GLfloat DepthBias
, DepthScale
;
1088 GLint IndexShift
, IndexOffset
;
1092 /* Note: actual pixel maps are not part of this attrib group */
1093 GLboolean MapColorFlag
;
1094 GLboolean MapStencilFlag
;
1096 /*--- End Pixel Transfer State ---*/
1099 GLfloat ZoomX
, ZoomY
;
1104 * Point attribute group (GL_POINT_BIT).
1106 struct gl_point_attrib
1108 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1109 GLfloat Size
; /**< User-specified point size */
1110 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1111 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1112 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1113 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1114 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1115 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1116 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1117 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1122 * Polygon attribute group (GL_POLYGON_BIT).
1124 struct gl_polygon_attrib
1126 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1127 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1128 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1129 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1130 GLboolean CullFlag
; /**< Culling on/off flag */
1131 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1132 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1133 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1134 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1135 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1136 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1137 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1138 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1143 * Scissor attributes (GL_SCISSOR_BIT).
1145 struct gl_scissor_attrib
1147 GLboolean Enabled
; /**< Scissor test enabled? */
1148 GLint X
, Y
; /**< Lower left corner of box */
1149 GLsizei Width
, Height
; /**< Size of box */
1154 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1156 * Three sets of stencil data are tracked so that OpenGL 2.0,
1157 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1158 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1159 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1160 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1161 * GL_EXT_stencil_two_side GL_BACK state.
1163 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1164 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1166 * The derived value \c _TestTwoSide is set when the front-face and back-face
1167 * stencil state are different.
1169 struct gl_stencil_attrib
1171 GLboolean Enabled
; /**< Enabled flag */
1172 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1173 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1174 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1175 GLboolean _TestTwoSide
;
1176 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1177 GLenum Function
[3]; /**< Stencil function */
1178 GLenum FailFunc
[3]; /**< Fail function */
1179 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1180 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1181 GLint Ref
[3]; /**< Reference value */
1182 GLuint ValueMask
[3]; /**< Value mask */
1183 GLuint WriteMask
[3]; /**< Write mask */
1184 GLuint Clear
; /**< Clear value */
1189 * An index for each type of texture object. These correspond to the GL
1190 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1191 * Note: the order is from highest priority to lowest priority.
1195 TEXTURE_BUFFER_INDEX
,
1196 TEXTURE_2D_ARRAY_INDEX
,
1197 TEXTURE_1D_ARRAY_INDEX
,
1198 TEXTURE_EXTERNAL_INDEX
,
1209 * Bit flags for each type of texture object
1210 * Used for Texture.Unit[]._ReallyEnabled flags.
1213 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1214 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1215 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1216 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1217 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1218 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1219 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1220 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1221 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1226 * TexGenEnabled flags.
1233 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1238 * Bit flag versions of the corresponding GL_ constants.
1241 #define TEXGEN_SPHERE_MAP 0x1
1242 #define TEXGEN_OBJ_LINEAR 0x2
1243 #define TEXGEN_EYE_LINEAR 0x4
1244 #define TEXGEN_REFLECTION_MAP_NV 0x8
1245 #define TEXGEN_NORMAL_MAP_NV 0x10
1247 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1248 TEXGEN_REFLECTION_MAP_NV | \
1249 TEXGEN_NORMAL_MAP_NV)
1250 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1251 TEXGEN_REFLECTION_MAP_NV | \
1252 TEXGEN_NORMAL_MAP_NV | \
1258 /** Tex-gen enabled for texture unit? */
1259 #define ENABLE_TEXGEN(unit) (1 << (unit))
1261 /** Non-identity texture matrix for texture unit? */
1262 #define ENABLE_TEXMAT(unit) (1 << (unit))
1266 * Texture image state. Drivers will typically create a subclass of this
1267 * with extra fields for memory buffers, etc.
1269 struct gl_texture_image
1271 GLint InternalFormat
; /**< Internal format as given by the user */
1272 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1273 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1274 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1275 * GL_DEPTH_STENCIL_EXT only. Used for
1276 * choosing TexEnv arithmetic.
1278 gl_format TexFormat
; /**< The actual texture memory format */
1280 GLuint Border
; /**< 0 or 1 */
1281 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1282 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1283 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1284 GLuint Width2
; /**< = Width - 2*Border */
1285 GLuint Height2
; /**< = Height - 2*Border */
1286 GLuint Depth2
; /**< = Depth - 2*Border */
1287 GLuint WidthLog2
; /**< = log2(Width2) */
1288 GLuint HeightLog2
; /**< = log2(Height2) */
1289 GLuint DepthLog2
; /**< = log2(Depth2) */
1290 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1292 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1293 GLuint Level
; /**< Which mipmap level am I? */
1294 /** Cube map face: index into gl_texture_object::Image[] array */
1300 * Indexes for cube map faces.
1315 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1316 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1318 struct gl_sampler_object
1323 GLenum WrapS
; /**< S-axis texture image wrap mode */
1324 GLenum WrapT
; /**< T-axis texture image wrap mode */
1325 GLenum WrapR
; /**< R-axis texture image wrap mode */
1326 GLenum MinFilter
; /**< minification filter */
1327 GLenum MagFilter
; /**< magnification filter */
1328 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1329 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1330 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1331 GLfloat LodBias
; /**< OpenGL 1.4 */
1332 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1333 GLenum CompareMode
; /**< GL_ARB_shadow */
1334 GLenum CompareFunc
; /**< GL_ARB_shadow */
1335 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1336 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1337 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1339 /* deprecated sampler state */
1340 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1345 * Texture object state. Contains the array of mipmap images, border color,
1346 * wrap modes, filter modes, and shadow/texcompare state.
1348 struct gl_texture_object
1350 _glthread_Mutex Mutex
; /**< for thread safety */
1351 GLint RefCount
; /**< reference count */
1352 GLuint Name
; /**< the user-visible texture object ID */
1353 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1355 struct gl_sampler_object Sampler
;
1357 GLfloat Priority
; /**< in [0,1] */
1358 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1359 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1360 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1361 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1362 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1363 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1364 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1365 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1366 GLboolean _Complete
; /**< Is texture object complete? */
1367 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1368 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1369 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1371 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1372 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1374 /** GL_ARB_texture_buffer_object */
1375 struct gl_buffer_object
*BufferObject
;
1376 GLenum BufferObjectFormat
;
1378 /** GL_OES_EGL_image_external */
1379 GLint RequiredTextureImageUnits
;
1383 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1384 #define MAX_COMBINER_TERMS 4
1388 * Texture combine environment state.
1390 struct gl_tex_env_combine_state
1392 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1393 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1394 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1395 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1396 GLenum SourceA
[MAX_COMBINER_TERMS
];
1397 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1398 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1399 GLenum OperandA
[MAX_COMBINER_TERMS
];
1400 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1401 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1402 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1403 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1408 * Texture coord generation state.
1412 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1413 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1414 GLfloat ObjectPlane
[4];
1415 GLfloat EyePlane
[4];
1420 * Texture unit state. Contains enable flags, texture environment/function/
1421 * combiners, texgen state, and pointers to current texture objects.
1423 struct gl_texture_unit
1425 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1426 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1428 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1429 GLclampf EnvColor
[4];
1430 GLfloat EnvColorUnclamped
[4];
1432 struct gl_texgen GenS
;
1433 struct gl_texgen GenT
;
1434 struct gl_texgen GenR
;
1435 struct gl_texgen GenQ
;
1436 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1437 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1439 GLfloat LodBias
; /**< for biasing mipmap levels */
1441 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1443 /** Current sampler object (GL_ARB_sampler_objects) */
1444 struct gl_sampler_object
*Sampler
;
1447 * \name GL_EXT_texture_env_combine
1449 struct gl_tex_env_combine_state Combine
;
1452 * Derived state based on \c EnvMode and the \c BaseFormat of the
1453 * currently enabled texture.
1455 struct gl_tex_env_combine_state _EnvMode
;
1458 * Currently enabled combiner state. This will point to either
1459 * \c Combine or \c _EnvMode.
1461 struct gl_tex_env_combine_state
*_CurrentCombine
;
1463 /** Current texture object pointers */
1464 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1466 /** Points to highest priority, complete and enabled texture object */
1467 struct gl_texture_object
*_Current
;
1472 * Texture attribute group (GL_TEXTURE_BIT).
1474 struct gl_texture_attrib
1476 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1477 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1479 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1481 /** GL_ARB_texture_buffer_object */
1482 struct gl_buffer_object
*BufferObject
;
1484 /** GL_ARB_seamless_cubemap */
1485 GLboolean CubeMapSeamless
;
1487 /** Texture units/samplers used by vertex or fragment texturing */
1488 GLbitfield _EnabledUnits
;
1490 /** Texture coord units/sets used for fragment texturing */
1491 GLbitfield _EnabledCoordUnits
;
1493 /** Texture coord units that have texgen enabled */
1494 GLbitfield _TexGenEnabled
;
1496 /** Texture coord units that have non-identity matrices */
1497 GLbitfield _TexMatEnabled
;
1499 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1500 GLbitfield _GenFlags
;
1505 * Data structure representing a single clip plane (e.g. one of the elements
1506 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1508 typedef GLfloat gl_clip_plane
[4];
1512 * Transformation attribute group (GL_TRANSFORM_BIT).
1514 struct gl_transform_attrib
1516 GLenum MatrixMode
; /**< Matrix mode */
1517 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1518 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1519 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1520 GLboolean Normalize
; /**< Normalize all normals? */
1521 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1522 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1523 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1525 GLfloat CullEyePos
[4];
1526 GLfloat CullObjPos
[4];
1531 * Viewport attribute group (GL_VIEWPORT_BIT).
1533 struct gl_viewport_attrib
1535 GLint X
, Y
; /**< position */
1536 GLsizei Width
, Height
; /**< size */
1537 GLfloat Near
, Far
; /**< Depth buffer range */
1538 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1543 * GL_ARB_vertex/pixel_buffer_object buffer object
1545 struct gl_buffer_object
1547 _glthread_Mutex Mutex
;
1550 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1551 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1552 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1553 /** Fields describing a mapped buffer */
1555 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1556 GLvoid
*Pointer
; /**< User-space address of mapping */
1557 GLintptr Offset
; /**< Mapped offset */
1558 GLsizeiptr Length
; /**< Mapped length */
1560 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1561 GLboolean Written
; /**< Ever written to? (for debugging) */
1562 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1567 * Client pixel packing/unpacking attributes
1569 struct gl_pixelstore_attrib
1577 GLboolean SwapBytes
;
1579 GLboolean Invert
; /**< GL_MESA_pack_invert */
1580 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1585 * Client vertex array attributes
1587 struct gl_client_array
1589 GLint Size
; /**< components per element (1,2,3,4) */
1590 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1591 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1592 GLsizei Stride
; /**< user-specified stride */
1593 GLsizei StrideB
; /**< actual stride in bytes */
1594 const GLubyte
*Ptr
; /**< Points to array data */
1595 GLboolean Enabled
; /**< Enabled flag is a boolean */
1596 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1597 GLboolean Integer
; /**< Integer-valued? */
1598 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1599 GLuint _ElementSize
; /**< size of each element in bytes */
1601 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1602 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1607 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1608 * extension, but a nice encapsulation in any case.
1610 struct gl_array_object
1612 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1616 _glthread_Mutex Mutex
;
1617 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1619 /** Vertex attribute arrays */
1620 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1622 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1623 GLbitfield64 _Enabled
;
1626 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1627 * we can determine the max legal (in bounds) glDrawElements array index.
1631 struct gl_buffer_object
*ElementArrayBufferObj
;
1636 * Vertex array state
1638 struct gl_array_attrib
1640 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1641 struct gl_array_object
*ArrayObj
;
1643 /** The default vertex array object */
1644 struct gl_array_object
*DefaultArrayObj
;
1646 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1647 struct _mesa_HashTable
*Objects
;
1649 GLint ActiveTexture
; /**< Client Active Texture */
1650 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1651 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1653 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1654 GLboolean PrimitiveRestart
;
1655 GLuint RestartIndex
;
1657 GLbitfield64 NewState
; /**< mask of VERT_BIT_* values */
1658 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1660 /* GL_ARB_vertex_buffer_object */
1661 struct gl_buffer_object
*ArrayBufferObj
;
1666 * Feedback buffer state
1671 GLbitfield _Mask
; /**< FB_* bits */
1679 * Selection buffer state
1683 GLuint
*Buffer
; /**< selection buffer */
1684 GLuint BufferSize
; /**< size of the selection buffer */
1685 GLuint BufferCount
; /**< number of values in the selection buffer */
1686 GLuint Hits
; /**< number of records in the selection buffer */
1687 GLuint NameStackDepth
; /**< name stack depth */
1688 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1689 GLboolean HitFlag
; /**< hit flag */
1690 GLfloat HitMinZ
; /**< minimum hit depth */
1691 GLfloat HitMaxZ
; /**< maximum hit depth */
1696 * 1-D Evaluator control points
1700 GLuint Order
; /**< Number of control points */
1701 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1702 GLfloat
*Points
; /**< Points to contiguous control points */
1707 * 2-D Evaluator control points
1711 GLuint Uorder
; /**< Number of control points in U dimension */
1712 GLuint Vorder
; /**< Number of control points in V dimension */
1715 GLfloat
*Points
; /**< Points to contiguous control points */
1720 * All evaluator control point state
1722 struct gl_evaluators
1728 struct gl_1d_map Map1Vertex3
;
1729 struct gl_1d_map Map1Vertex4
;
1730 struct gl_1d_map Map1Index
;
1731 struct gl_1d_map Map1Color4
;
1732 struct gl_1d_map Map1Normal
;
1733 struct gl_1d_map Map1Texture1
;
1734 struct gl_1d_map Map1Texture2
;
1735 struct gl_1d_map Map1Texture3
;
1736 struct gl_1d_map Map1Texture4
;
1737 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1744 struct gl_2d_map Map2Vertex3
;
1745 struct gl_2d_map Map2Vertex4
;
1746 struct gl_2d_map Map2Index
;
1747 struct gl_2d_map Map2Color4
;
1748 struct gl_2d_map Map2Normal
;
1749 struct gl_2d_map Map2Texture1
;
1750 struct gl_2d_map Map2Texture2
;
1751 struct gl_2d_map Map2Texture3
;
1752 struct gl_2d_map Map2Texture4
;
1753 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1759 * Names of the various vertex/fragment program register files, etc.
1761 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1762 * All values should fit in a 4-bit field.
1764 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1765 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1766 * be "uniform" variables since they can only be set outside glBegin/End.
1767 * They're also all stored in the same Parameters array.
1771 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1772 PROGRAM_INPUT
, /**< machine->Inputs[] */
1773 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1774 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1775 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1776 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1777 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1778 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1779 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1780 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1781 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1782 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1783 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1784 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1785 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1791 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1792 * one of these values.
1796 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1797 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1798 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1799 SYSTEM_VALUE_MAX
/**< Number of values */
1804 * The possible interpolation qualifiers that can be applied to a fragment
1805 * shader input in GLSL.
1807 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1808 * gl_fragment_program data structure to 0 causes the default behavior.
1810 enum glsl_interp_qualifier
1812 INTERP_QUALIFIER_NONE
= 0,
1813 INTERP_QUALIFIER_SMOOTH
,
1814 INTERP_QUALIFIER_FLAT
,
1815 INTERP_QUALIFIER_NOPERSPECTIVE
1819 /** Vertex and fragment instructions */
1820 struct prog_instruction
;
1821 struct gl_program_parameter_list
;
1822 struct gl_uniform_list
;
1824 struct gl_transform_feedback_varying_info
{
1830 struct gl_transform_feedback_output
{
1831 unsigned OutputRegister
;
1832 unsigned OutputBuffer
;
1833 unsigned NumComponents
;
1835 /** offset (in DWORDs) of this output within the interleaved structure */
1839 * Offset into the output register of the data to output. For example,
1840 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1841 * offset is in the y and z components of the output register.
1843 unsigned ComponentOffset
;
1846 /** Post-link transform feedback info. */
1847 struct gl_transform_feedback_info
{
1848 unsigned NumOutputs
;
1851 * Number of transform feedback buffers in use by this program.
1853 unsigned NumBuffers
;
1855 struct gl_transform_feedback_output
*Outputs
;
1857 /** Transform feedback varyings used for the linking of this shader program.
1859 * Use for glGetTransformFeedbackVarying().
1861 struct gl_transform_feedback_varying_info
*Varyings
;
1865 * Total number of components stored in each buffer. This may be used by
1866 * hardware back-ends to determine the correct stride when interleaving
1867 * multiple transform feedback outputs in the same buffer.
1869 unsigned BufferStride
[MAX_FEEDBACK_ATTRIBS
];
1873 * Base class for any kind of program object
1878 GLubyte
*String
; /**< Null-terminated program text */
1880 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1881 GLenum Format
; /**< String encoding format */
1884 struct prog_instruction
*Instructions
;
1886 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1887 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1888 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1889 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1890 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1891 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1892 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1893 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1896 /** Named parameters, constants, etc. from program text */
1897 struct gl_program_parameter_list
*Parameters
;
1898 /** Numbered local parameters */
1899 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1901 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1902 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1904 /** Bitmask of which register files are read/written with indirect
1905 * addressing. Mask of (1 << PROGRAM_x) bits.
1907 GLbitfield IndirectRegisterFiles
;
1909 /** Logical counts */
1911 GLuint NumInstructions
;
1912 GLuint NumTemporaries
;
1913 GLuint NumParameters
;
1914 GLuint NumAttributes
;
1915 GLuint NumAddressRegs
;
1916 GLuint NumAluInstructions
;
1917 GLuint NumTexInstructions
;
1918 GLuint NumTexIndirections
;
1920 /** Native, actual h/w counts */
1922 GLuint NumNativeInstructions
;
1923 GLuint NumNativeTemporaries
;
1924 GLuint NumNativeParameters
;
1925 GLuint NumNativeAttributes
;
1926 GLuint NumNativeAddressRegs
;
1927 GLuint NumNativeAluInstructions
;
1928 GLuint NumNativeTexInstructions
;
1929 GLuint NumNativeTexIndirections
;
1934 /** Vertex program object */
1935 struct gl_vertex_program
1937 struct gl_program Base
; /**< base class */
1938 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1939 GLboolean IsPositionInvariant
;
1940 GLboolean UsesClipDistance
;
1944 /** Geometry program object */
1945 struct gl_geometry_program
1947 struct gl_program Base
; /**< base class */
1950 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1951 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1952 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1956 /** Fragment program object */
1957 struct gl_fragment_program
1959 struct gl_program Base
; /**< base class */
1960 GLboolean UsesKill
; /**< shader uses KIL instruction */
1961 GLboolean OriginUpperLeft
;
1962 GLboolean PixelCenterInteger
;
1963 enum gl_frag_depth_layout FragDepthLayout
;
1966 * GLSL interpolation qualifier associated with each fragment shader input.
1967 * For inputs that do not have an interpolation qualifier specified in
1968 * GLSL, the value is INTERP_QUALIFIER_NONE.
1970 enum glsl_interp_qualifier InterpQualifier
[FRAG_ATTRIB_MAX
];
1975 * State common to vertex and fragment programs.
1977 struct gl_program_state
1979 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1980 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1985 * Context state for vertex programs.
1987 struct gl_vertex_program_state
1989 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1990 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1991 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1992 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1993 /** Computed two sided lighting for fixed function/programs. */
1994 GLboolean _TwoSideEnabled
;
1995 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1997 /** Currently enabled and valid vertex program (including internal
1998 * programs, user-defined vertex programs and GLSL vertex shaders).
1999 * This is the program we must use when rendering.
2001 struct gl_vertex_program
*_Current
;
2003 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2005 /* For GL_NV_vertex_program only: */
2006 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
2007 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
2009 /** Should fixed-function T&L be implemented with a vertex prog? */
2010 GLboolean _MaintainTnlProgram
;
2012 /** Program to emulate fixed-function T&L (see above) */
2013 struct gl_vertex_program
*_TnlProgram
;
2015 /** Cache of fixed-function programs */
2016 struct gl_program_cache
*Cache
;
2018 GLboolean _Overriden
;
2023 * Context state for geometry programs.
2025 struct gl_geometry_program_state
2027 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2028 GLboolean _Enabled
; /**< Enabled and valid program? */
2029 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2031 /** Currently enabled and valid program (including internal programs
2032 * and compiled shader programs).
2034 struct gl_geometry_program
*_Current
;
2036 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2038 /** Cache of fixed-function programs */
2039 struct gl_program_cache
*Cache
;
2043 * Context state for fragment programs.
2045 struct gl_fragment_program_state
2047 GLboolean Enabled
; /**< User-set fragment program enable flag */
2048 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2049 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2051 /** Currently enabled and valid fragment program (including internal
2052 * programs, user-defined fragment programs and GLSL fragment shaders).
2053 * This is the program we must use when rendering.
2055 struct gl_fragment_program
*_Current
;
2057 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2059 /** Should fixed-function texturing be implemented with a fragment prog? */
2060 GLboolean _MaintainTexEnvProgram
;
2062 /** Program to emulate fixed-function texture env/combine (see above) */
2063 struct gl_fragment_program
*_TexEnvProgram
;
2065 /** Cache of fixed-function programs */
2066 struct gl_program_cache
*Cache
;
2071 * ATI_fragment_shader runtime state
2073 #define ATI_FS_INPUT_PRIMARY 0
2074 #define ATI_FS_INPUT_SECONDARY 1
2076 struct atifs_instruction
;
2077 struct atifs_setupinst
;
2080 * ATI fragment shader
2082 struct ati_fragment_shader
2086 struct atifs_instruction
*Instructions
[2];
2087 struct atifs_setupinst
*SetupInst
[2];
2088 GLfloat Constants
[8][4];
2089 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2090 GLubyte numArithInstr
[2];
2091 GLubyte regsAssigned
[2];
2092 GLubyte NumPasses
; /**< 1 or 2 */
2094 GLubyte last_optype
;
2095 GLboolean interpinp1
;
2101 * Context state for GL_ATI_fragment_shader
2103 struct gl_ati_fragment_shader_state
2106 GLboolean _Enabled
; /**< enabled and valid shader? */
2107 GLboolean Compiling
;
2108 GLfloat GlobalConstants
[8][4];
2109 struct ati_fragment_shader
*Current
;
2114 * Occlusion/timer query object.
2116 struct gl_query_object
2118 GLenum Target
; /**< The query target, when active */
2119 GLuint Id
; /**< hash table ID/name */
2120 GLuint64EXT Result
; /**< the counter */
2121 GLboolean Active
; /**< inside Begin/EndQuery */
2122 GLboolean Ready
; /**< result is ready? */
2127 * Context state for query objects.
2129 struct gl_query_state
2131 struct _mesa_HashTable
*QueryObjects
;
2132 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2133 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2135 /** GL_NV_conditional_render */
2136 struct gl_query_object
*CondRenderQuery
;
2138 /** GL_EXT_transform_feedback */
2139 struct gl_query_object
*PrimitivesGenerated
;
2140 struct gl_query_object
*PrimitivesWritten
;
2142 /** GL_ARB_timer_query */
2143 struct gl_query_object
*TimeElapsed
;
2145 GLenum CondRenderMode
;
2149 /** Sync object state */
2150 struct gl_sync_object
{
2151 struct simple_node link
;
2152 GLenum Type
; /**< GL_SYNC_FENCE */
2153 GLuint Name
; /**< Fence name */
2154 GLint RefCount
; /**< Reference count */
2155 GLboolean DeletePending
; /**< Object was deleted while there were still
2156 * live references (e.g., sync not yet finished)
2158 GLenum SyncCondition
;
2159 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2160 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2164 /** Set by #pragma directives */
2165 struct gl_sl_pragmas
2167 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2168 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2169 GLboolean Optimize
; /**< defaults on */
2170 GLboolean Debug
; /**< defaults off */
2175 * A GLSL vertex or fragment shader object.
2179 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2180 GLuint Name
; /**< AKA the handle */
2181 GLint RefCount
; /**< Reference count */
2182 GLboolean DeletePending
;
2183 GLboolean CompileStatus
;
2184 const GLchar
*Source
; /**< Source code string */
2185 GLuint SourceChecksum
; /**< for debug/logging purposes */
2186 struct gl_program
*Program
; /**< Post-compile assembly code */
2188 struct gl_sl_pragmas Pragmas
;
2190 unsigned Version
; /**< GLSL version used for linking */
2193 * \name Sampler tracking
2195 * \note Each of these fields is only set post-linking.
2198 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2199 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2200 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2204 * Number of uniform components used by this shader.
2206 * This field is only set post-linking.
2208 unsigned num_uniform_components
;
2210 struct exec_list
*ir
;
2211 struct glsl_symbol_table
*symbols
;
2213 /** Shaders containing built-in functions that are used for linking. */
2214 struct gl_shader
*builtins_to_link
[16];
2215 unsigned num_builtins_to_link
;
2220 * A GLSL program object.
2221 * Basically a linked collection of vertex and fragment shaders.
2223 struct gl_shader_program
2225 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2226 GLuint Name
; /**< aka handle or ID */
2227 GLint RefCount
; /**< Reference count */
2228 GLboolean DeletePending
;
2231 * Flags that the linker should not reject the program if it lacks
2232 * a vertex or fragment shader. GLES2 doesn't allow separate
2233 * shader objects, and would reject them. However, we internally
2234 * build separate shader objects for fixed function programs, which
2235 * we use for drivers/common/meta.c and for handling
2236 * _mesa_update_state with no program bound (for example in
2239 GLboolean InternalSeparateShader
;
2241 GLuint NumShaders
; /**< number of attached shaders */
2242 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2245 * User-defined attribute bindings
2247 * These are set via \c glBindAttribLocation and are used to direct the
2248 * GLSL linker. These are \b not the values used in the compiled shader,
2249 * and they are \b not the values returned by \c glGetAttribLocation.
2251 struct string_to_uint_map
*AttributeBindings
;
2254 * User-defined fragment data bindings
2256 * These are set via \c glBindFragDataLocation and are used to direct the
2257 * GLSL linker. These are \b not the values used in the compiled shader,
2258 * and they are \b not the values returned by \c glGetFragDataLocation.
2260 struct string_to_uint_map
*FragDataBindings
;
2263 * Transform feedback varyings last specified by
2264 * glTransformFeedbackVaryings().
2266 * For the current set of transform feeedback varyings used for transform
2267 * feedback output, see LinkedTransformFeedback.
2272 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2273 } TransformFeedback
;
2275 /** Post-link transform feedback info. */
2276 struct gl_transform_feedback_info LinkedTransformFeedback
;
2278 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2279 enum gl_frag_depth_layout FragDepthLayout
;
2281 /** Geometry shader state - copied into gl_geometry_program at link time */
2284 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2285 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2286 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2289 /** Vertex shader state - copied into gl_vertex_program at link time */
2291 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2292 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2293 0 if not present. */
2296 /* post-link info: */
2297 unsigned NumUserUniformStorage
;
2298 struct gl_uniform_storage
*UniformStorage
;
2301 * Map of active uniform names to locations
2303 * Maps any active uniform that is not an array element to a location.
2304 * Each active uniform, including individual structure members will appear
2305 * in this map. This roughly corresponds to the set of names that would be
2306 * enumerated by \c glGetActiveUniform.
2308 struct string_to_uint_map
*UniformHash
;
2311 * Map from sampler unit to texture unit (set by glUniform1i())
2313 * A sampler unit is associated with each sampler uniform by the linker.
2314 * The sampler unit associated with each uniform is stored in the
2315 * \c gl_uniform_storage::sampler field.
2317 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2318 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2319 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2321 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2322 GLboolean Validated
;
2323 GLboolean _Used
; /**< Ever used for drawing? */
2326 unsigned Version
; /**< GLSL version used for linking */
2329 * Per-stage shaders resulting from the first stage of linking.
2331 * Set of linked shaders for this program. The array is accessed using the
2332 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2335 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2339 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2340 #define GLSL_LOG 0x2 /**< Write shaders to files */
2341 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2342 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2343 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2344 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2345 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2346 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2350 * Context state for GLSL vertex/fragment shaders.
2352 struct gl_shader_state
2355 * Programs used for rendering
2357 * There is a separate program set for each shader stage. If
2358 * GL_EXT_separate_shader_objects is not supported, each of these must point
2359 * to \c NULL or to the same program.
2361 struct gl_shader_program
*CurrentVertexProgram
;
2362 struct gl_shader_program
*CurrentGeometryProgram
;
2363 struct gl_shader_program
*CurrentFragmentProgram
;
2365 struct gl_shader_program
*_CurrentFragmentProgram
;
2368 * Program used by glUniform calls.
2370 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2372 struct gl_shader_program
*ActiveProgram
;
2374 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2378 * Compiler options for a single GLSL shaders type
2380 struct gl_shader_compiler_options
2382 /** Driver-selectable options: */
2383 GLboolean EmitCondCodes
; /**< Use condition codes? */
2384 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2385 GLboolean EmitNoLoops
;
2386 GLboolean EmitNoFunctions
;
2387 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2388 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2389 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2390 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2391 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2394 * \name Forms of indirect addressing the driver cannot do.
2397 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2398 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2399 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2400 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2403 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2404 GLuint MaxUnrollIterations
;
2406 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2410 * Transform feedback object state
2412 struct gl_transform_feedback_object
2414 GLuint Name
; /**< AKA the object ID */
2416 GLboolean Active
; /**< Is transform feedback enabled? */
2417 GLboolean Paused
; /**< Is transform feedback paused? */
2418 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
2421 /** The feedback buffers */
2422 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2423 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2425 /** Start of feedback data in dest buffer */
2426 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2427 /** Max data to put into dest buffer (in bytes) */
2428 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2433 * Context state for transform feedback.
2435 struct gl_transform_feedback
2437 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2439 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2440 struct gl_buffer_object
*CurrentBuffer
;
2442 /** The table of all transform feedback objects */
2443 struct _mesa_HashTable
*Objects
;
2445 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2446 struct gl_transform_feedback_object
*CurrentObject
;
2448 /** The default xform-fb object (Name==0) */
2449 struct gl_transform_feedback_object
*DefaultObject
;
2455 * State which can be shared by multiple contexts:
2457 struct gl_shared_state
2459 _glthread_Mutex Mutex
; /**< for thread safety */
2460 GLint RefCount
; /**< Reference count */
2461 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2462 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2464 /** Default texture objects (shared by all texture units) */
2465 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2467 /** Fallback texture used when a bound texture is incomplete */
2468 struct gl_texture_object
*FallbackTex
;
2471 * \name Thread safety and statechange notification for texture
2474 * \todo Improve the granularity of locking.
2477 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2478 GLuint TextureStateStamp
; /**< state notification for shared tex */
2481 /** Default buffer object for vertex arrays that aren't in VBOs */
2482 struct gl_buffer_object
*NullBufferObj
;
2485 * \name Vertex/geometry/fragment programs
2488 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2489 struct gl_vertex_program
*DefaultVertexProgram
;
2490 struct gl_fragment_program
*DefaultFragmentProgram
;
2491 struct gl_geometry_program
*DefaultGeometryProgram
;
2494 /* GL_ATI_fragment_shader */
2495 struct _mesa_HashTable
*ATIShaders
;
2496 struct ati_fragment_shader
*DefaultFragmentShader
;
2498 struct _mesa_HashTable
*BufferObjects
;
2500 /** Table of both gl_shader and gl_shader_program objects */
2501 struct _mesa_HashTable
*ShaderObjects
;
2503 /* GL_EXT_framebuffer_object */
2504 struct _mesa_HashTable
*RenderBuffers
;
2505 struct _mesa_HashTable
*FrameBuffers
;
2508 struct simple_node SyncObjects
;
2510 /** GL_ARB_sampler_objects */
2511 struct _mesa_HashTable
*SamplerObjects
;
2513 void *DriverData
; /**< Device driver shared state */
2520 * A renderbuffer stores colors or depth values or stencil values.
2521 * A framebuffer object will have a collection of these.
2522 * Data are read/written to the buffer with a handful of Get/Put functions.
2524 * Instances of this object are allocated with the Driver's NewRenderbuffer
2525 * hook. Drivers will likely wrap this class inside a driver-specific
2526 * class to simulate inheritance.
2528 struct gl_renderbuffer
2530 _glthread_Mutex Mutex
; /**< for thread safety */
2531 GLuint ClassID
; /**< Useful for drivers */
2534 GLuint Width
, Height
;
2535 GLint RowStride
; /**< Padded width in units of pixels */
2536 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2538 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2542 GLenum InternalFormat
; /**< The user-specified format */
2543 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2544 GL_STENCIL_INDEX. */
2545 gl_format Format
; /**< The actual renderbuffer memory format */
2547 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2548 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2550 /* Used to wrap one renderbuffer around another: */
2551 struct gl_renderbuffer
*Wrapped
;
2553 /* Delete this renderbuffer */
2554 void (*Delete
)(struct gl_renderbuffer
*rb
);
2556 /* Allocate new storage for this renderbuffer */
2557 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2558 GLenum internalFormat
,
2559 GLuint width
, GLuint height
);
2561 /* Lock/Unlock are called before/after calling the Get/Put functions.
2562 * Not sure this is the right place for these yet.
2563 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2564 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2567 /* Return a pointer to the element/pixel at (x,y).
2568 * Should return NULL if the buffer memory can't be directly addressed.
2570 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2573 /* Get/Read a row of values.
2574 * The values will be of format _BaseFormat and type DataType.
2576 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2577 GLint x
, GLint y
, void *values
);
2579 /* Get/Read values at arbitrary locations.
2580 * The values will be of format _BaseFormat and type DataType.
2582 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2583 const GLint x
[], const GLint y
[], void *values
);
2585 /* Put/Write a row of values.
2586 * The values will be of format _BaseFormat and type DataType.
2588 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2589 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2591 /* Put/Write values at arbitrary locations.
2592 * The values will be of format _BaseFormat and type DataType.
2594 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2595 const GLint x
[], const GLint y
[], const void *values
,
2596 const GLubyte
*mask
);
2601 * A renderbuffer attachment points to either a texture object (and specifies
2602 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2604 struct gl_renderbuffer_attachment
2606 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2610 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2611 * application supplied renderbuffer object.
2613 struct gl_renderbuffer
*Renderbuffer
;
2616 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2617 * supplied texture object.
2619 struct gl_texture_object
*Texture
;
2620 GLuint TextureLevel
; /**< Attached mipmap level. */
2621 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2622 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2623 * and 2D array textures */
2628 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2629 * In C++ terms, think of this as a base class from which device drivers
2630 * will make derived classes.
2632 struct gl_framebuffer
2634 _glthread_Mutex Mutex
; /**< for thread safety */
2636 * If zero, this is a window system framebuffer. If non-zero, this
2637 * is a FBO framebuffer; note that for some devices (i.e. those with
2638 * a natural pixel coordinate system for FBOs that differs from the
2639 * OpenGL/Mesa coordinate system), this means that the viewport,
2640 * polygon face orientation, and polygon stipple will have to be inverted.
2645 GLboolean DeletePending
;
2648 * The framebuffer's visual. Immutable if this is a window system buffer.
2649 * Computed from attachments if user-made FBO.
2651 struct gl_config Visual
;
2653 GLboolean Initialized
;
2655 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2657 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2659 GLint _Xmin
, _Xmax
; /**< inclusive */
2660 GLint _Ymin
, _Ymax
; /**< exclusive */
2663 /** \name Derived Z buffer stuff */
2665 GLuint _DepthMax
; /**< Max depth buffer value */
2666 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2667 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2670 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2673 /** Integer color values */
2674 GLboolean _IntegerColor
;
2676 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2677 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2679 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2680 * attribute group and GL_PIXEL attribute group, respectively.
2682 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2683 GLenum ColorReadBuffer
;
2685 /** Computed from ColorDraw/ReadBuffer above */
2686 GLuint _NumColorDrawBuffers
;
2687 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2688 GLint _ColorReadBufferIndex
; /* -1 = None */
2689 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2690 struct gl_renderbuffer
*_ColorReadBuffer
;
2692 /** Delete this framebuffer */
2693 void (*Delete
)(struct gl_framebuffer
*fb
);
2698 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2702 GLushort RangeMin
; /**< min value exponent */
2703 GLushort RangeMax
; /**< max value exponent */
2704 GLushort Precision
; /**< number of mantissa bits */
2709 * Limits for vertex, geometry and fragment programs/shaders.
2711 struct gl_program_constants
2713 /* logical limits */
2714 GLuint MaxInstructions
;
2715 GLuint MaxAluInstructions
;
2716 GLuint MaxTexInstructions
;
2717 GLuint MaxTexIndirections
;
2720 GLuint MaxAddressRegs
;
2721 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2722 GLuint MaxParameters
;
2723 GLuint MaxLocalParams
;
2724 GLuint MaxEnvParams
;
2725 /* native/hardware limits */
2726 GLuint MaxNativeInstructions
;
2727 GLuint MaxNativeAluInstructions
;
2728 GLuint MaxNativeTexInstructions
;
2729 GLuint MaxNativeTexIndirections
;
2730 GLuint MaxNativeAttribs
;
2731 GLuint MaxNativeTemps
;
2732 GLuint MaxNativeAddressRegs
;
2733 GLuint MaxNativeParameters
;
2735 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2736 /* ES 2.0 and GL_ARB_ES2_compatibility */
2737 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2738 struct gl_precision LowInt
, MediumInt
, HighInt
;
2743 * Constants which may be overridden by device driver during context creation
2744 * but are never changed after that.
2748 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2749 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2750 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2751 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2752 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2753 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2754 GLuint MaxTextureCoordUnits
;
2755 GLuint MaxTextureImageUnits
;
2756 GLuint MaxVertexTextureImageUnits
;
2757 GLuint MaxCombinedTextureImageUnits
;
2758 GLuint MaxGeometryTextureImageUnits
;
2759 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2760 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2761 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2762 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2764 GLuint MaxArrayLockSize
;
2768 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2769 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2770 GLfloat PointSizeGranularity
;
2771 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2772 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2773 GLfloat LineWidthGranularity
;
2775 GLuint MaxColorTableSize
;
2777 GLuint MaxClipPlanes
;
2779 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2780 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2782 GLuint MaxViewportWidth
, MaxViewportHeight
;
2784 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2785 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2786 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2787 GLuint MaxProgramMatrices
;
2788 GLuint MaxProgramMatrixStackDepth
;
2790 /** vertex array / buffer object bounds checking */
2791 GLboolean CheckArrayBounds
;
2793 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2795 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2796 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2797 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2799 /** Number of varying vectors between vertex and fragment shaders */
2801 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2802 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2804 /** GL_ARB_geometry_shader4 */
2805 GLuint MaxGeometryOutputVertices
;
2806 GLuint MaxGeometryTotalOutputComponents
;
2808 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2811 * Does the driver support real 32-bit integers? (Otherwise, integers are
2812 * simulated via floats.)
2814 GLboolean NativeIntegers
;
2817 * If the driver supports real 32-bit integers, what integer value should be
2818 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2820 GLuint UniformBooleanTrue
;
2822 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2823 GLbitfield SupportedBumpUnits
;
2826 * Maximum amount of time, measured in nanseconds, that the server can wait.
2828 GLuint64 MaxServerWaitTimeout
;
2830 /** GL_EXT_provoking_vertex */
2831 GLboolean QuadsFollowProvokingVertexConvention
;
2833 /** OpenGL version 3.0 */
2834 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2836 /** OpenGL version 3.2 */
2837 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2839 /** GL_EXT_transform_feedback */
2840 GLuint MaxTransformFeedbackSeparateAttribs
;
2841 GLuint MaxTransformFeedbackSeparateComponents
;
2842 GLuint MaxTransformFeedbackInterleavedComponents
;
2844 /** GL_EXT_gpu_shader4 */
2845 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2847 /* GL_EXT_framebuffer_sRGB */
2848 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2850 /* GL_ARB_robustness */
2851 GLenum ResetStrategy
;
2854 * Whether the implementation strips out and ignores texture borders.
2856 * Many GPU hardware implementations don't support rendering with texture
2857 * borders and mipmapped textures. (Note: not static border color, but the
2858 * old 1-pixel border around each edge). Implementations then have to do
2859 * slow fallbacks to be correct, or just ignore the border and be fast but
2860 * wrong. Setting the flag stripts the border off of TexImage calls,
2861 * providing "fast but wrong" at significantly reduced driver complexity.
2863 * Texture borders are deprecated in GL 3.0.
2865 GLboolean StripTextureBorder
;
2868 * For drivers which can do a better job at eliminating unused varyings
2869 * and uniforms than the GLSL compiler.
2871 * XXX Remove these as soon as a better solution is available.
2873 GLboolean GLSLSkipStrictMaxVaryingLimitCheck
;
2874 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
2879 * Enable flag for each OpenGL extension. Different device drivers will
2880 * enable different extensions at runtime.
2882 struct gl_extensions
2884 GLboolean dummy
; /* don't remove this! */
2885 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2886 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2887 GLboolean ARB_ES2_compatibility
;
2888 GLboolean ARB_blend_func_extended
;
2889 GLboolean ARB_color_buffer_float
;
2890 GLboolean ARB_conservative_depth
;
2891 GLboolean ARB_copy_buffer
;
2892 GLboolean ARB_depth_buffer_float
;
2893 GLboolean ARB_depth_clamp
;
2894 GLboolean ARB_depth_texture
;
2895 GLboolean ARB_draw_buffers_blend
;
2896 GLboolean ARB_draw_elements_base_vertex
;
2897 GLboolean ARB_draw_instanced
;
2898 GLboolean ARB_fragment_coord_conventions
;
2899 GLboolean ARB_fragment_program
;
2900 GLboolean ARB_fragment_program_shadow
;
2901 GLboolean ARB_fragment_shader
;
2902 GLboolean ARB_framebuffer_object
;
2903 GLboolean ARB_explicit_attrib_location
;
2904 GLboolean ARB_geometry_shader4
;
2905 GLboolean ARB_half_float_pixel
;
2906 GLboolean ARB_half_float_vertex
;
2907 GLboolean ARB_instanced_arrays
;
2908 GLboolean ARB_map_buffer_range
;
2909 GLboolean ARB_occlusion_query
;
2910 GLboolean ARB_occlusion_query2
;
2911 GLboolean ARB_point_sprite
;
2912 GLboolean ARB_sampler_objects
;
2913 GLboolean ARB_seamless_cube_map
;
2914 GLboolean ARB_shader_objects
;
2915 GLboolean ARB_shader_stencil_export
;
2916 GLboolean ARB_shader_texture_lod
;
2917 GLboolean ARB_shading_language_100
;
2918 GLboolean ARB_shadow
;
2919 GLboolean ARB_shadow_ambient
;
2921 GLboolean ARB_texture_border_clamp
;
2922 GLboolean ARB_texture_buffer_object
;
2923 GLboolean ARB_texture_compression_rgtc
;
2924 GLboolean ARB_texture_cube_map
;
2925 GLboolean ARB_texture_env_combine
;
2926 GLboolean ARB_texture_env_crossbar
;
2927 GLboolean ARB_texture_env_dot3
;
2928 GLboolean ARB_texture_float
;
2929 GLboolean ARB_texture_multisample
;
2930 GLboolean ARB_texture_non_power_of_two
;
2931 GLboolean ARB_texture_rg
;
2932 GLboolean ARB_texture_rgb10_a2ui
;
2933 GLboolean ARB_texture_storage
;
2934 GLboolean ARB_timer_query
;
2935 GLboolean ARB_transform_feedback2
;
2936 GLboolean ARB_transpose_matrix
;
2937 GLboolean ARB_uniform_buffer_object
;
2938 GLboolean ARB_vertex_array_object
;
2939 GLboolean ARB_vertex_program
;
2940 GLboolean ARB_vertex_shader
;
2941 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2942 GLboolean ARB_window_pos
;
2943 GLboolean EXT_blend_color
;
2944 GLboolean EXT_blend_equation_separate
;
2945 GLboolean EXT_blend_func_separate
;
2946 GLboolean EXT_blend_minmax
;
2947 GLboolean EXT_clip_volume_hint
;
2948 GLboolean EXT_compiled_vertex_array
;
2949 GLboolean EXT_depth_bounds_test
;
2950 GLboolean EXT_draw_buffers2
;
2951 GLboolean EXT_draw_range_elements
;
2952 GLboolean EXT_fog_coord
;
2953 GLboolean EXT_framebuffer_blit
;
2954 GLboolean EXT_framebuffer_multisample
;
2955 GLboolean EXT_framebuffer_object
;
2956 GLboolean EXT_framebuffer_sRGB
;
2957 GLboolean EXT_gpu_program_parameters
;
2958 GLboolean EXT_gpu_shader4
;
2959 GLboolean EXT_packed_depth_stencil
;
2960 GLboolean EXT_packed_float
;
2961 GLboolean EXT_packed_pixels
;
2962 GLboolean EXT_pixel_buffer_object
;
2963 GLboolean EXT_point_parameters
;
2964 GLboolean EXT_provoking_vertex
;
2965 GLboolean EXT_rescale_normal
;
2966 GLboolean EXT_shadow_funcs
;
2967 GLboolean EXT_secondary_color
;
2968 GLboolean EXT_separate_shader_objects
;
2969 GLboolean EXT_separate_specular_color
;
2970 GLboolean EXT_stencil_two_side
;
2971 GLboolean EXT_texture3D
;
2972 GLboolean EXT_texture_array
;
2973 GLboolean EXT_texture_compression_latc
;
2974 GLboolean EXT_texture_compression_s3tc
;
2975 GLboolean EXT_texture_env_dot3
;
2976 GLboolean EXT_texture_filter_anisotropic
;
2977 GLboolean EXT_texture_integer
;
2978 GLboolean EXT_texture_mirror_clamp
;
2979 GLboolean EXT_texture_shared_exponent
;
2980 GLboolean EXT_texture_snorm
;
2981 GLboolean EXT_texture_sRGB
;
2982 GLboolean EXT_texture_sRGB_decode
;
2983 GLboolean EXT_texture_swizzle
;
2984 GLboolean EXT_transform_feedback
;
2985 GLboolean EXT_timer_query
;
2986 GLboolean EXT_vertex_array_bgra
;
2987 GLboolean OES_standard_derivatives
;
2988 /* vendor extensions */
2989 GLboolean AMD_seamless_cubemap_per_texture
;
2990 GLboolean APPLE_packed_pixels
;
2991 GLboolean APPLE_vertex_array_object
;
2992 GLboolean APPLE_object_purgeable
;
2993 GLboolean ATI_envmap_bumpmap
;
2994 GLboolean ATI_texture_compression_3dc
;
2995 GLboolean ATI_texture_mirror_once
;
2996 GLboolean ATI_texture_env_combine3
;
2997 GLboolean ATI_fragment_shader
;
2998 GLboolean ATI_separate_stencil
;
2999 GLboolean IBM_rasterpos_clip
;
3000 GLboolean IBM_multimode_draw_arrays
;
3001 GLboolean MESA_pack_invert
;
3002 GLboolean MESA_resize_buffers
;
3003 GLboolean MESA_ycbcr_texture
;
3004 GLboolean MESA_texture_array
;
3005 GLboolean NV_blend_square
;
3006 GLboolean NV_conditional_render
;
3007 GLboolean NV_fog_distance
;
3008 GLboolean NV_fragment_program
;
3009 GLboolean NV_fragment_program_option
;
3010 GLboolean NV_light_max_exponent
;
3011 GLboolean NV_point_sprite
;
3012 GLboolean NV_primitive_restart
;
3013 GLboolean NV_texture_barrier
;
3014 GLboolean NV_texgen_reflection
;
3015 GLboolean NV_texture_env_combine4
;
3016 GLboolean NV_texture_rectangle
;
3017 GLboolean NV_vertex_program
;
3018 GLboolean NV_vertex_program1_1
;
3019 GLboolean SGIS_texture_lod
;
3020 GLboolean TDFX_texture_compression_FXT1
;
3022 GLboolean OES_EGL_image
;
3023 GLboolean OES_draw_texture
;
3024 GLboolean OES_EGL_image_external
;
3025 GLboolean OES_compressed_ETC1_RGB8_texture
;
3026 GLboolean extension_sentinel
;
3027 /** The extension string */
3028 const GLubyte
*String
;
3029 /** Number of supported extensions */
3035 * A stack of matrices (projection, modelview, color, texture, etc).
3037 struct gl_matrix_stack
3039 GLmatrix
*Top
; /**< points into Stack */
3040 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3041 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3042 GLuint MaxDepth
; /**< size of Stack[] array */
3043 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3048 * \name Bits for image transfer operations
3049 * \sa __struct gl_contextRec::ImageTransferState.
3052 #define IMAGE_SCALE_BIAS_BIT 0x1
3053 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3054 #define IMAGE_MAP_COLOR_BIT 0x4
3055 #define IMAGE_CLAMP_BIT 0x800
3058 /** Pixel Transfer ops */
3059 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3060 IMAGE_SHIFT_OFFSET_BIT | \
3061 IMAGE_MAP_COLOR_BIT)
3064 * \name Bits to indicate what state has changed.
3067 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3068 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3069 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3070 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3071 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3072 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3073 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3074 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3075 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3076 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3077 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3078 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3079 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3080 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3081 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3082 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3083 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3084 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3085 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3086 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
3087 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3088 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3089 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3090 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3091 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3092 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3093 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3094 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3095 #define _NEW_BUFFER_OBJECT (1 << 28)
3096 #define _NEW_FRAG_CLAMP (1 << 29)
3097 #define _NEW_TRANSFORM_FEEDBACK (1 << 30) /**< gl_context::TransformFeedback */
3101 * We use _NEW_TRANSFORM for GL_RASTERIZER_DISCARD. This #define is for
3104 #define _NEW_RASTERIZER_DISCARD _NEW_TRANSFORM
3109 * \name A bunch of flags that we think might be useful to drivers.
3111 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3114 #define DD_FLATSHADE 0x1
3115 #define DD_SEPARATE_SPECULAR 0x2
3116 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3117 #define DD_TRI_LIGHT_TWOSIDE 0x8
3118 #define DD_TRI_UNFILLED 0x10
3119 #define DD_TRI_SMOOTH 0x20
3120 #define DD_TRI_STIPPLE 0x40
3121 #define DD_TRI_OFFSET 0x80
3122 #define DD_LINE_SMOOTH 0x100
3123 #define DD_LINE_STIPPLE 0x200
3124 #define DD_POINT_SMOOTH 0x400
3125 #define DD_POINT_ATTEN 0x800
3126 #define DD_TRI_TWOSTENCIL 0x1000
3131 * \name Define the state changes under which each of these bits might change
3134 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3135 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3136 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3137 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3138 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3139 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3140 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3141 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3142 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3143 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3144 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3145 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3146 #define _DD_NEW_POINT_SIZE _NEW_POINT
3147 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3152 * Composite state flags
3155 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3165 /* This has to be included here. */
3170 * Display list flags.
3171 * Strictly this is a tnl-private concept, but it doesn't seem
3172 * worthwhile adding a tnl private structure just to hold this one bit
3175 #define DLIST_DANGLING_REFS 0x1
3178 /** Opaque declaration of display list payload data type */
3179 union gl_dlist_node
;
3183 * Provide a location where information about a display list can be
3184 * collected. Could be extended with driverPrivate structures,
3185 * etc. in the future.
3187 struct gl_display_list
3190 GLbitfield Flags
; /**< DLIST_x flags */
3191 /** The dlist commands are in a linked list of nodes */
3192 union gl_dlist_node
*Head
;
3197 * State used during display list compilation and execution.
3199 struct gl_dlist_state
3201 GLuint CallDepth
; /**< Current recursion calling depth */
3203 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3204 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3205 GLuint CurrentPos
; /**< Index into current block of nodes */
3207 GLvertexformat ListVtxfmt
;
3209 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3210 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3212 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3213 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3215 GLubyte ActiveIndex
;
3216 GLfloat CurrentIndex
;
3218 GLubyte ActiveEdgeFlag
;
3219 GLboolean CurrentEdgeFlag
;
3222 /* State known to have been set by the currently-compiling display
3223 * list. Used to eliminate some redundant state changes.
3231 * Enum for the OpenGL APIs we know about and may support.
3242 * Mesa rendering context.
3244 * This is the central context data structure for Mesa. Almost all
3245 * OpenGL state is contained in this structure.
3246 * Think of this as a base class from which device drivers will derive
3249 * The struct gl_context typedef names this structure.
3253 /** State possibly shared with other contexts in the address space */
3254 struct gl_shared_state
*Shared
;
3256 /** \name API function pointer tables */
3259 struct _glapi_table
*Save
; /**< Display list save functions */
3260 struct _glapi_table
*Exec
; /**< Execute functions */
3261 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3264 struct gl_config Visual
;
3265 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3266 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3267 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3268 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3271 * Device driver function pointer table
3273 struct dd_function_table Driver
;
3275 void *DriverCtx
; /**< Points to device driver context/state */
3277 /** Core/Driver constants */
3278 struct gl_constants Const
;
3280 /** \name The various 4x4 matrix stacks */
3282 struct gl_matrix_stack ModelviewMatrixStack
;
3283 struct gl_matrix_stack ProjectionMatrixStack
;
3284 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3285 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3286 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3289 /** Combined modelview and projection matrix */
3290 GLmatrix _ModelProjectMatrix
;
3292 /** \name Display lists */
3293 struct gl_dlist_state ListState
;
3295 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3296 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3298 /** Extension information */
3299 struct gl_extensions Extensions
;
3302 GLuint VersionMajor
, VersionMinor
;
3303 char *VersionString
;
3305 /** \name State attribute stack (for glPush/PopAttrib) */
3307 GLuint AttribStackDepth
;
3308 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3311 /** \name Renderer attribute groups
3313 * We define a struct for each attribute group to make pushing and popping
3314 * attributes easy. Also it's a good organization.
3317 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3318 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3319 struct gl_current_attrib Current
; /**< Current attributes */
3320 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3321 struct gl_eval_attrib Eval
; /**< Eval attributes */
3322 struct gl_fog_attrib Fog
; /**< Fog attributes */
3323 struct gl_hint_attrib Hint
; /**< Hint attributes */
3324 struct gl_light_attrib Light
; /**< Light attributes */
3325 struct gl_line_attrib Line
; /**< Line attributes */
3326 struct gl_list_attrib List
; /**< List attributes */
3327 struct gl_multisample_attrib Multisample
;
3328 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3329 struct gl_point_attrib Point
; /**< Point attributes */
3330 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3331 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3332 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3333 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3334 struct gl_texture_attrib Texture
; /**< Texture attributes */
3335 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3336 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3339 /** \name Client attribute stack */
3341 GLuint ClientAttribStackDepth
;
3342 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3345 /** \name Client attribute groups */
3347 struct gl_array_attrib Array
; /**< Vertex arrays */
3348 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3349 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3350 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3353 /** \name Other assorted state (not pushed/popped on attribute stack) */
3355 struct gl_pixelmaps PixelMaps
;
3357 struct gl_evaluators EvalMap
; /**< All evaluators */
3358 struct gl_feedback Feedback
; /**< Feedback */
3359 struct gl_selection Select
; /**< Selection */
3361 struct gl_program_state Program
; /**< general program state */
3362 struct gl_vertex_program_state VertexProgram
;
3363 struct gl_fragment_program_state FragmentProgram
;
3364 struct gl_geometry_program_state GeometryProgram
;
3365 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3367 struct gl_shader_state Shader
; /**< GLSL shader object state */
3368 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3370 struct gl_query_state Query
; /**< occlusion, timer queries */
3372 struct gl_transform_feedback TransformFeedback
;
3374 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3375 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3378 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3380 /* GL_EXT_framebuffer_object */
3381 struct gl_renderbuffer
*CurrentRenderbuffer
;
3383 GLenum ErrorValue
; /**< Last error code */
3385 /* GL_ARB_robustness */
3389 * Recognize and silence repeated error debug messages in buggy apps.
3391 const char *ErrorDebugFmtString
;
3392 GLuint ErrorDebugCount
;
3394 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3395 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3397 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3399 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3401 /** \name Derived state */
3403 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3404 * state validation so they need to always be current.
3406 GLbitfield _TriangleCaps
;
3407 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3408 GLfloat _EyeZDir
[3];
3409 GLfloat _ModelViewInvScale
;
3410 GLboolean _NeedEyeCoords
;
3411 GLboolean _ForceEyeCoords
;
3413 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3415 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3416 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3419 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3421 /** \name For debugging/development only */
3423 GLboolean FirstTimeCurrent
;
3426 /** software compression/decompression supported or not */
3427 GLboolean Mesa_DXTn
;
3429 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3432 * Use dp4 (rather than mul/mad) instructions for position
3435 GLboolean mvp_with_dp4
;
3437 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
3440 * \name Hooks for module contexts.
3442 * These will eventually live in the driver or elsewhere.
3445 void *swrast_context
;
3446 void *swsetup_context
;
3447 void *swtnl_context
;
3449 struct st_context
*st
;
3456 extern int MESA_VERBOSE
;
3457 extern int MESA_DEBUG_FLAGS
;
3458 # define MESA_FUNCTION __FUNCTION__
3460 # define MESA_VERBOSE 0
3461 # define MESA_DEBUG_FLAGS 0
3462 # define MESA_FUNCTION "a function"
3469 /** The MESA_VERBOSE var is a bitmask of these flags */
3472 VERBOSE_VARRAY
= 0x0001,
3473 VERBOSE_TEXTURE
= 0x0002,
3474 VERBOSE_MATERIAL
= 0x0004,
3475 VERBOSE_PIPELINE
= 0x0008,
3476 VERBOSE_DRIVER
= 0x0010,
3477 VERBOSE_STATE
= 0x0020,
3478 VERBOSE_API
= 0x0040,
3479 VERBOSE_DISPLAY_LIST
= 0x0100,
3480 VERBOSE_LIGHTING
= 0x0200,
3481 VERBOSE_PRIMS
= 0x0400,
3482 VERBOSE_VERTS
= 0x0800,
3483 VERBOSE_DISASSEM
= 0x1000,
3484 VERBOSE_DRAW
= 0x2000,
3485 VERBOSE_SWAPBUFFERS
= 0x4000
3489 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3492 DEBUG_ALWAYS_FLUSH
= 0x1
3501 #endif /* MTYPES_H */