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))
62 * \name Some forward type declarations
65 struct _mesa_HashTable
;
66 struct gl_attrib_node
;
67 struct gl_list_extensions
;
69 struct gl_program_cache
;
70 struct gl_texture_object
;
73 struct gl_uniform_storage
;
77 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
78 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
79 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
80 #define PRIM_UNKNOWN (GL_POLYGON+3)
84 * Shader stages. Note that these will become 5 with tessellation.
85 * These MUST have the same values as gallium's PIPE_SHADER_*
89 MESA_SHADER_VERTEX
= 0,
90 MESA_SHADER_FRAGMENT
= 1,
91 MESA_SHADER_GEOMETRY
= 2,
98 * Indexes for vertex program attributes.
99 * GL_NV_vertex_program aliases generic attributes over the conventional
100 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
101 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
102 * generic attributes are distinct/separate).
107 VERT_ATTRIB_WEIGHT
= 1,
108 VERT_ATTRIB_NORMAL
= 2,
109 VERT_ATTRIB_COLOR0
= 3,
110 VERT_ATTRIB_COLOR1
= 4,
112 VERT_ATTRIB_COLOR_INDEX
= 6,
113 VERT_ATTRIB_EDGEFLAG
= 7,
114 VERT_ATTRIB_TEX0
= 8,
115 VERT_ATTRIB_TEX1
= 9,
116 VERT_ATTRIB_TEX2
= 10,
117 VERT_ATTRIB_TEX3
= 11,
118 VERT_ATTRIB_TEX4
= 12,
119 VERT_ATTRIB_TEX5
= 13,
120 VERT_ATTRIB_TEX6
= 14,
121 VERT_ATTRIB_TEX7
= 15,
122 VERT_ATTRIB_POINT_SIZE
= 16,
123 VERT_ATTRIB_GENERIC0
= 17,
124 VERT_ATTRIB_GENERIC1
= 18,
125 VERT_ATTRIB_GENERIC2
= 19,
126 VERT_ATTRIB_GENERIC3
= 20,
127 VERT_ATTRIB_GENERIC4
= 21,
128 VERT_ATTRIB_GENERIC5
= 22,
129 VERT_ATTRIB_GENERIC6
= 23,
130 VERT_ATTRIB_GENERIC7
= 24,
131 VERT_ATTRIB_GENERIC8
= 25,
132 VERT_ATTRIB_GENERIC9
= 26,
133 VERT_ATTRIB_GENERIC10
= 27,
134 VERT_ATTRIB_GENERIC11
= 28,
135 VERT_ATTRIB_GENERIC12
= 29,
136 VERT_ATTRIB_GENERIC13
= 30,
137 VERT_ATTRIB_GENERIC14
= 31,
138 VERT_ATTRIB_GENERIC15
= 32,
143 * Symbolic constats to help iterating over
144 * specific blocks of vertex attributes.
147 * includes all fixed function attributes as well as
148 * the aliased GL_NV_vertex_program shader attributes.
150 * include the classic texture coordinate attributes.
151 * Is a subset of VERT_ATTRIB_FF.
152 * VERT_ATTRIB_GENERIC_NV
153 * include the NV shader attributes.
154 * Is a subset of VERT_ATTRIB_FF.
155 * VERT_ATTRIB_GENERIC
156 * include the OpenGL 2.0+ GLSL generic shader attributes.
157 * These alias the generic GL_ARB_vertex_shader attributes.
159 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
160 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
162 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
163 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
165 #define VERT_ATTRIB_GENERIC_NV(i) (VERT_ATTRIB_POS + (i))
166 #define VERT_ATTRIB_GENERIC_NV_MAX MAX_VERTEX_GENERIC_ATTRIBS
168 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
169 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
172 * Bitflags for vertex attributes.
173 * These are used in bitfields in many places.
176 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
177 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
178 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
179 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
180 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
181 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
182 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
183 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
184 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
185 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
186 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
187 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
188 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
189 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
190 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
191 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
192 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
193 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
195 #define VERT_BIT(i) BITFIELD64_BIT(i)
196 #define VERT_BIT_ALL (BITFIELD64_BIT(VERT_ATTRIB_MAX) - 1)
198 #define VERT_BIT_FF(i) VERT_BIT(i)
199 #define VERT_BIT_FF_ALL (BITFIELD64_BIT(VERT_ATTRIB_FF_MAX) - 1)
200 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
201 #define VERT_BIT_TEX_ALL \
202 ((BITFIELD64_BIT(VERT_ATTRIB_TEX_MAX) - 1) << VERT_ATTRIB_TEX(0))
203 #define VERT_BIT_GENERIC_NV(i) VERT_BIT(VERT_ATTRIB_GENERIC_NV(i))
204 #define VERT_BIT_GENERIC_NV_ALL \
205 ((BITFIELD64_BIT(VERT_ATTRIB_GENERIC_NV_MAX) - 1) << (VERT_ATTRIB_GENERIC_NV(0)))
206 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
207 #define VERT_BIT_GENERIC_ALL \
208 ((BITFIELD64_BIT(VERT_ATTRIB_GENERIC_MAX) - 1) << (VERT_ATTRIB_GENERIC(0)))
213 * Indexes for vertex program result attributes. Note that
214 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
215 * assumptions about the layout of this enum.
219 VERT_RESULT_HPOS
= 0,
220 VERT_RESULT_COL0
= 1,
221 VERT_RESULT_COL1
= 2,
222 VERT_RESULT_FOGC
= 3,
223 VERT_RESULT_TEX0
= 4,
224 VERT_RESULT_TEX1
= 5,
225 VERT_RESULT_TEX2
= 6,
226 VERT_RESULT_TEX3
= 7,
227 VERT_RESULT_TEX4
= 8,
228 VERT_RESULT_TEX5
= 9,
229 VERT_RESULT_TEX6
= 10,
230 VERT_RESULT_TEX7
= 11,
231 VERT_RESULT_PSIZ
= 12,
232 VERT_RESULT_BFC0
= 13,
233 VERT_RESULT_BFC1
= 14,
234 VERT_RESULT_EDGE
= 15,
235 VERT_RESULT_CLIP_VERTEX
= 16,
236 VERT_RESULT_CLIP_DIST0
= 17,
237 VERT_RESULT_CLIP_DIST1
= 18,
238 VERT_RESULT_VAR0
= 19, /**< shader varying */
239 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
243 /*********************************************/
246 * Indexes for geometry program attributes.
250 GEOM_ATTRIB_POSITION
= 0,
251 GEOM_ATTRIB_COLOR0
= 1,
252 GEOM_ATTRIB_COLOR1
= 2,
253 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
254 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
255 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
256 GEOM_ATTRIB_POINT_SIZE
= 6,
257 GEOM_ATTRIB_CLIP_VERTEX
= 7,
258 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
259 GEOM_ATTRIB_TEX_COORD
= 9,
261 GEOM_ATTRIB_VAR0
= 16,
262 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
266 * Bitflags for geometry attributes.
267 * These are used in bitfields in many places.
270 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
271 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
272 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
273 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
274 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
275 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
276 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
277 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
278 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
279 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
280 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
282 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
287 * Indexes for geometry program result attributes
292 GEOM_RESULT_COL0
= 1,
293 GEOM_RESULT_COL1
= 2,
294 GEOM_RESULT_SCOL0
= 3,
295 GEOM_RESULT_SCOL1
= 4,
296 GEOM_RESULT_FOGC
= 5,
297 GEOM_RESULT_TEX0
= 6,
298 GEOM_RESULT_TEX1
= 7,
299 GEOM_RESULT_TEX2
= 8,
300 GEOM_RESULT_TEX3
= 9,
301 GEOM_RESULT_TEX4
= 10,
302 GEOM_RESULT_TEX5
= 11,
303 GEOM_RESULT_TEX6
= 12,
304 GEOM_RESULT_TEX7
= 13,
305 GEOM_RESULT_PSIZ
= 14,
306 GEOM_RESULT_CLPV
= 15,
307 GEOM_RESULT_PRID
= 16,
308 GEOM_RESULT_LAYR
= 17,
309 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
310 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
311 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
316 * Indexes for fragment program input attributes. Note that
317 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
318 * assumptions about the layout of this enum.
322 FRAG_ATTRIB_WPOS
= 0,
323 FRAG_ATTRIB_COL0
= 1,
324 FRAG_ATTRIB_COL1
= 2,
325 FRAG_ATTRIB_FOGC
= 3,
326 FRAG_ATTRIB_TEX0
= 4,
327 FRAG_ATTRIB_TEX1
= 5,
328 FRAG_ATTRIB_TEX2
= 6,
329 FRAG_ATTRIB_TEX3
= 7,
330 FRAG_ATTRIB_TEX4
= 8,
331 FRAG_ATTRIB_TEX5
= 9,
332 FRAG_ATTRIB_TEX6
= 10,
333 FRAG_ATTRIB_TEX7
= 11,
334 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
335 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
336 FRAG_ATTRIB_CLIP_DIST0
= 14,
337 FRAG_ATTRIB_CLIP_DIST1
= 15,
338 FRAG_ATTRIB_VAR0
= 16, /**< shader varying */
339 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
344 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
346 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
348 * gl_vert_result values which have no corresponding gl_frag_attrib
349 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
350 * VERT_RESULT_EDGE) are converted to a value of -1.
353 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result
)
355 if (vert_result
>= VERT_RESULT_CLIP_DIST0
)
356 return vert_result
- VERT_RESULT_CLIP_DIST0
+ FRAG_ATTRIB_CLIP_DIST0
;
357 else if (vert_result
<= VERT_RESULT_TEX7
)
365 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
367 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
369 * gl_frag_attrib values which have no corresponding gl_vert_result
370 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
373 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib
)
375 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
377 else if (frag_attrib
>= FRAG_ATTRIB_CLIP_DIST0
)
378 return frag_attrib
- FRAG_ATTRIB_CLIP_DIST0
+ VERT_RESULT_CLIP_DIST0
;
385 * Bitflags for fragment program input attributes.
388 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
389 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
390 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
391 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
392 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
393 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
394 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
395 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
396 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
397 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
398 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
399 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
400 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
401 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
402 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
404 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
405 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
407 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
419 * Fragment program results
423 FRAG_RESULT_DEPTH
= 0,
424 FRAG_RESULT_STENCIL
= 1,
425 /* If a single color should be written to all render targets, this
426 * register is written. No FRAG_RESULT_DATAn will be written.
428 FRAG_RESULT_COLOR
= 2,
430 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
431 * or ARB_fragment_program fragment.color[n]) color results. If
432 * any are written, FRAG_RESULT_COLOR will not be written.
434 FRAG_RESULT_DATA0
= 3,
435 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
440 * Indexes for all renderbuffers
444 /* the four standard color buffers */
452 /* optional aux buffer */
454 /* generic renderbuffers */
467 * Bit flags for all renderbuffers
469 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
470 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
471 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
472 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
473 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
474 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
475 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
476 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
477 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
478 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
479 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
480 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
481 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
482 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
483 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
484 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
485 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
486 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
487 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
490 * Mask of all the color buffer bits (but not accum).
492 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
493 BUFFER_BIT_BACK_LEFT | \
494 BUFFER_BIT_FRONT_RIGHT | \
495 BUFFER_BIT_BACK_RIGHT | \
497 BUFFER_BIT_COLOR0 | \
498 BUFFER_BIT_COLOR1 | \
499 BUFFER_BIT_COLOR2 | \
500 BUFFER_BIT_COLOR3 | \
501 BUFFER_BIT_COLOR4 | \
502 BUFFER_BIT_COLOR5 | \
503 BUFFER_BIT_COLOR6 | \
508 * Framebuffer configuration (aka visual / pixelformat)
509 * Note: some of these fields should be boolean, but it appears that
510 * code in drivers/dri/common/util.c requires int-sized fields.
516 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
517 GLuint doubleBufferMode
;
520 GLboolean haveAccumBuffer
;
521 GLboolean haveDepthBuffer
;
522 GLboolean haveStencilBuffer
;
524 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
525 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
526 GLint rgbBits
; /* total bits for rgb */
527 GLint indexBits
; /* total bits for colorindex */
529 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
537 /* EXT_visual_rating / GLX 1.2 */
540 /* EXT_visual_info / GLX 1.2 */
541 GLint transparentPixel
;
542 /* colors are floats scaled to ints */
543 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
544 GLint transparentIndex
;
546 /* ARB_multisample / SGIS_multisample */
550 /* SGIX_pbuffer / GLX 1.3 */
551 GLint maxPbufferWidth
;
552 GLint maxPbufferHeight
;
553 GLint maxPbufferPixels
;
554 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
555 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
557 /* OML_swap_method */
560 /* EXT_texture_from_pixmap */
561 GLint bindToTextureRgb
;
562 GLint bindToTextureRgba
;
563 GLint bindToMipmapTexture
;
564 GLint bindToTextureTargets
;
567 /* EXT_framebuffer_sRGB */
573 * \name Bit flags used for updating material values.
576 #define MAT_ATTRIB_FRONT_AMBIENT 0
577 #define MAT_ATTRIB_BACK_AMBIENT 1
578 #define MAT_ATTRIB_FRONT_DIFFUSE 2
579 #define MAT_ATTRIB_BACK_DIFFUSE 3
580 #define MAT_ATTRIB_FRONT_SPECULAR 4
581 #define MAT_ATTRIB_BACK_SPECULAR 5
582 #define MAT_ATTRIB_FRONT_EMISSION 6
583 #define MAT_ATTRIB_BACK_EMISSION 7
584 #define MAT_ATTRIB_FRONT_SHININESS 8
585 #define MAT_ATTRIB_BACK_SHININESS 9
586 #define MAT_ATTRIB_FRONT_INDEXES 10
587 #define MAT_ATTRIB_BACK_INDEXES 11
588 #define MAT_ATTRIB_MAX 12
590 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
591 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
592 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
593 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
594 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
595 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
597 #define MAT_INDEX_AMBIENT 0
598 #define MAT_INDEX_DIFFUSE 1
599 #define MAT_INDEX_SPECULAR 2
601 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
602 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
603 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
604 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
605 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
606 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
607 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
608 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
609 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
610 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
611 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
612 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
615 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
616 MAT_BIT_FRONT_AMBIENT | \
617 MAT_BIT_FRONT_DIFFUSE | \
618 MAT_BIT_FRONT_SPECULAR | \
619 MAT_BIT_FRONT_SHININESS | \
620 MAT_BIT_FRONT_INDEXES)
622 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
623 MAT_BIT_BACK_AMBIENT | \
624 MAT_BIT_BACK_DIFFUSE | \
625 MAT_BIT_BACK_SPECULAR | \
626 MAT_BIT_BACK_SHININESS | \
627 MAT_BIT_BACK_INDEXES)
629 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
633 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
634 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
637 * Material shininess lookup table.
641 struct gl_shine_tab
*next
, *prev
;
642 GLfloat tab
[SHINE_TABLE_SIZE
+1];
649 * Light source state.
653 struct gl_light
*next
; /**< double linked list with sentinel */
654 struct gl_light
*prev
;
656 GLfloat Ambient
[4]; /**< ambient color */
657 GLfloat Diffuse
[4]; /**< diffuse color */
658 GLfloat Specular
[4]; /**< specular color */
659 GLfloat EyePosition
[4]; /**< position in eye coordinates */
660 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
661 GLfloat SpotExponent
;
662 GLfloat SpotCutoff
; /**< in degrees */
663 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
664 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
665 GLfloat ConstantAttenuation
;
666 GLfloat LinearAttenuation
;
667 GLfloat QuadraticAttenuation
;
668 GLboolean Enabled
; /**< On/off flag */
671 * \name Derived fields
674 GLbitfield _Flags
; /**< State */
676 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
677 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
678 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
679 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
680 GLfloat _VP_inf_spot_attenuation
;
682 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
683 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
684 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
685 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
686 GLfloat _dli
; /**< CI diffuse light intensity */
687 GLfloat _sli
; /**< CI specular light intensity */
697 GLfloat Ambient
[4]; /**< ambient color */
698 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
699 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
700 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
701 * or GL_SEPARATE_SPECULAR_COLOR */
710 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
715 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
717 struct gl_accum_attrib
719 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
724 * Used for storing clear color, texture border color, etc.
725 * The float values are typically unclamped.
736 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
738 struct gl_colorbuffer_attrib
740 GLuint ClearIndex
; /**< Index for glClear */
741 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
742 GLuint IndexMask
; /**< Color index write mask */
743 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
745 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
748 * \name alpha testing
751 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
752 GLenum AlphaFunc
; /**< Alpha test function */
753 GLfloat AlphaRefUnclamped
;
754 GLclampf AlphaRef
; /**< Alpha reference value */
761 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
763 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
764 * control, only on the fixed-pointness of the render target.
765 * The query does however depend on fragment color clamping.
767 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
768 GLfloat BlendColor
[4]; /**< Blending color */
772 GLenum SrcRGB
; /**< RGB blend source term */
773 GLenum DstRGB
; /**< RGB blend dest term */
774 GLenum SrcA
; /**< Alpha blend source term */
775 GLenum DstA
; /**< Alpha blend dest term */
776 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
777 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
778 } Blend
[MAX_DRAW_BUFFERS
];
779 /** Are the blend func terms currently different for each buffer/target? */
780 GLboolean _BlendFuncPerBuffer
;
781 /** Are the blend equations currently different for each buffer/target? */
782 GLboolean _BlendEquationPerBuffer
;
789 GLenum LogicOp
; /**< Logic operator */
790 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
791 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
794 GLboolean DitherFlag
; /**< Dither enable flag */
796 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
797 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
798 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
799 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
801 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
806 * Current attribute group (GL_CURRENT_BIT).
808 struct gl_current_attrib
811 * \name Current vertex attributes.
812 * \note Values are valid only after FLUSH_VERTICES has been called.
813 * \note Index and Edgeflag current values are stored as floats in the
814 * SIX and SEVEN attribute slots.
816 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
819 * \name Current raster position attributes (always valid).
820 * \note This set of attributes is very similar to the SWvertex struct.
823 GLfloat RasterPos
[4];
824 GLfloat RasterDistance
;
825 GLfloat RasterColor
[4];
826 GLfloat RasterSecondaryColor
[4];
827 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
828 GLboolean RasterPosValid
;
834 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
836 struct gl_depthbuffer_attrib
838 GLenum Func
; /**< Function for depth buffer compare */
839 GLclampd Clear
; /**< Value to clear depth buffer to */
840 GLboolean Test
; /**< Depth buffering enabled flag */
841 GLboolean Mask
; /**< Depth buffer writable? */
842 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
843 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
848 * Evaluator attribute group (GL_EVAL_BIT).
850 struct gl_eval_attrib
856 GLboolean Map1Color4
;
858 GLboolean Map1Normal
;
859 GLboolean Map1TextureCoord1
;
860 GLboolean Map1TextureCoord2
;
861 GLboolean Map1TextureCoord3
;
862 GLboolean Map1TextureCoord4
;
863 GLboolean Map1Vertex3
;
864 GLboolean Map1Vertex4
;
865 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
866 GLboolean Map2Color4
;
868 GLboolean Map2Normal
;
869 GLboolean Map2TextureCoord1
;
870 GLboolean Map2TextureCoord2
;
871 GLboolean Map2TextureCoord3
;
872 GLboolean Map2TextureCoord4
;
873 GLboolean Map2Vertex3
;
874 GLboolean Map2Vertex4
;
875 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
876 GLboolean AutoNormal
;
880 * \name Map Grid endpoints and divisions and calculated du values
884 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
885 GLint MapGrid2un
, MapGrid2vn
;
886 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
887 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
893 * Fog attribute group (GL_FOG_BIT).
897 GLboolean Enabled
; /**< Fog enabled flag */
898 GLfloat ColorUnclamped
[4]; /**< Fog color */
899 GLfloat Color
[4]; /**< Fog color */
900 GLfloat Density
; /**< Density >= 0.0 */
901 GLfloat Start
; /**< Start distance in eye coords */
902 GLfloat End
; /**< End distance in eye coords */
903 GLfloat Index
; /**< Fog index */
904 GLenum Mode
; /**< Fog mode */
905 GLboolean ColorSumEnabled
;
906 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
907 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
908 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
913 * \brief Layout qualifiers for gl_FragDepth.
915 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
916 * a layout qualifier.
918 * \see enum ir_depth_layout
920 enum gl_frag_depth_layout
{
921 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
922 FRAG_DEPTH_LAYOUT_ANY
,
923 FRAG_DEPTH_LAYOUT_GREATER
,
924 FRAG_DEPTH_LAYOUT_LESS
,
925 FRAG_DEPTH_LAYOUT_UNCHANGED
930 * Hint attribute group (GL_HINT_BIT).
932 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
934 struct gl_hint_attrib
936 GLenum PerspectiveCorrection
;
939 GLenum PolygonSmooth
;
941 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
942 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
943 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
944 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
951 #define LIGHT_SPOT 0x1
952 #define LIGHT_LOCAL_VIEWER 0x2
953 #define LIGHT_POSITIONAL 0x4
954 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
959 * Lighting attribute group (GL_LIGHT_BIT).
961 struct gl_light_attrib
963 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
964 struct gl_lightmodel Model
; /**< Lighting model */
967 * Must flush FLUSH_VERTICES before referencing:
970 struct gl_material Material
; /**< Includes front & back values */
973 GLboolean Enabled
; /**< Lighting enabled flag */
974 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
975 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
976 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
977 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
978 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
979 GLboolean ColorMaterialEnabled
;
980 GLenum ClampVertexColor
;
981 GLboolean _ClampVertexColor
;
983 struct gl_light EnabledList
; /**< List sentinel */
986 * Derived state for optimizations:
989 GLboolean _NeedEyeCoords
;
990 GLboolean _NeedVertices
; /**< Use fast shader? */
991 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
992 GLfloat _BaseColor
[2][3];
998 * Line attribute group (GL_LINE_BIT).
1000 struct gl_line_attrib
1002 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
1003 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
1004 GLushort StipplePattern
; /**< Stipple pattern */
1005 GLint StippleFactor
; /**< Stipple repeat factor */
1006 GLfloat Width
; /**< Line width */
1011 * Display list attribute group (GL_LIST_BIT).
1013 struct gl_list_attrib
1020 * Multisample attribute group (GL_MULTISAMPLE_BIT).
1022 struct gl_multisample_attrib
1025 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
1026 GLboolean SampleAlphaToCoverage
;
1027 GLboolean SampleAlphaToOne
;
1028 GLboolean SampleCoverage
;
1029 GLfloat SampleCoverageValue
;
1030 GLboolean SampleCoverageInvert
;
1035 * A pixelmap (see glPixelMap)
1040 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1041 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1046 * Collection of all pixelmaps
1050 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1051 struct gl_pixelmap GtoG
;
1052 struct gl_pixelmap BtoB
;
1053 struct gl_pixelmap AtoA
;
1054 struct gl_pixelmap ItoR
;
1055 struct gl_pixelmap ItoG
;
1056 struct gl_pixelmap ItoB
;
1057 struct gl_pixelmap ItoA
;
1058 struct gl_pixelmap ItoI
;
1059 struct gl_pixelmap StoS
;
1064 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1066 struct gl_pixel_attrib
1068 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1070 /*--- Begin Pixel Transfer State ---*/
1071 /* Fields are in the order in which they're applied... */
1073 /** Scale & Bias (index shift, offset) */
1075 GLfloat RedBias
, RedScale
;
1076 GLfloat GreenBias
, GreenScale
;
1077 GLfloat BlueBias
, BlueScale
;
1078 GLfloat AlphaBias
, AlphaScale
;
1079 GLfloat DepthBias
, DepthScale
;
1080 GLint IndexShift
, IndexOffset
;
1084 /* Note: actual pixel maps are not part of this attrib group */
1085 GLboolean MapColorFlag
;
1086 GLboolean MapStencilFlag
;
1088 /*--- End Pixel Transfer State ---*/
1091 GLfloat ZoomX
, ZoomY
;
1096 * Point attribute group (GL_POINT_BIT).
1098 struct gl_point_attrib
1100 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1101 GLfloat Size
; /**< User-specified point size */
1102 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1103 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1104 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1105 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1106 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1107 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1108 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1109 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1114 * Polygon attribute group (GL_POLYGON_BIT).
1116 struct gl_polygon_attrib
1118 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1119 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1120 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1121 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1122 GLboolean CullFlag
; /**< Culling on/off flag */
1123 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1124 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1125 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1126 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1127 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1128 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1129 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1130 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1135 * Scissor attributes (GL_SCISSOR_BIT).
1137 struct gl_scissor_attrib
1139 GLboolean Enabled
; /**< Scissor test enabled? */
1140 GLint X
, Y
; /**< Lower left corner of box */
1141 GLsizei Width
, Height
; /**< Size of box */
1146 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1148 * Three sets of stencil data are tracked so that OpenGL 2.0,
1149 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1150 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1151 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1152 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1153 * GL_EXT_stencil_two_side GL_BACK state.
1155 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1156 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1158 * The derived value \c _TestTwoSide is set when the front-face and back-face
1159 * stencil state are different.
1161 struct gl_stencil_attrib
1163 GLboolean Enabled
; /**< Enabled flag */
1164 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1165 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1166 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1167 GLboolean _TestTwoSide
;
1168 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1169 GLenum Function
[3]; /**< Stencil function */
1170 GLenum FailFunc
[3]; /**< Fail function */
1171 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1172 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1173 GLint Ref
[3]; /**< Reference value */
1174 GLuint ValueMask
[3]; /**< Value mask */
1175 GLuint WriteMask
[3]; /**< Write mask */
1176 GLuint Clear
; /**< Clear value */
1181 * An index for each type of texture object. These correspond to the GL
1182 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1183 * Note: the order is from highest priority to lowest priority.
1187 TEXTURE_BUFFER_INDEX
,
1188 TEXTURE_2D_ARRAY_INDEX
,
1189 TEXTURE_1D_ARRAY_INDEX
,
1190 TEXTURE_EXTERNAL_INDEX
,
1201 * Bit flags for each type of texture object
1202 * Used for Texture.Unit[]._ReallyEnabled flags.
1205 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1206 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1207 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1208 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1209 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1210 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1211 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1212 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1213 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1218 * TexGenEnabled flags.
1225 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1230 * Bit flag versions of the corresponding GL_ constants.
1233 #define TEXGEN_SPHERE_MAP 0x1
1234 #define TEXGEN_OBJ_LINEAR 0x2
1235 #define TEXGEN_EYE_LINEAR 0x4
1236 #define TEXGEN_REFLECTION_MAP_NV 0x8
1237 #define TEXGEN_NORMAL_MAP_NV 0x10
1239 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1240 TEXGEN_REFLECTION_MAP_NV | \
1241 TEXGEN_NORMAL_MAP_NV)
1242 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1243 TEXGEN_REFLECTION_MAP_NV | \
1244 TEXGEN_NORMAL_MAP_NV | \
1250 /** Tex-gen enabled for texture unit? */
1251 #define ENABLE_TEXGEN(unit) (1 << (unit))
1253 /** Non-identity texture matrix for texture unit? */
1254 #define ENABLE_TEXMAT(unit) (1 << (unit))
1258 * Texture image state. Drivers will typically create a subclass of this
1259 * with extra fields for memory buffers, etc.
1261 struct gl_texture_image
1263 GLint InternalFormat
; /**< Internal format as given by the user */
1264 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1265 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1266 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1267 * GL_DEPTH_STENCIL_EXT only. Used for
1268 * choosing TexEnv arithmetic.
1270 gl_format TexFormat
; /**< The actual texture memory format */
1272 GLuint Border
; /**< 0 or 1 */
1273 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1274 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1275 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1276 GLuint Width2
; /**< = Width - 2*Border */
1277 GLuint Height2
; /**< = Height - 2*Border */
1278 GLuint Depth2
; /**< = Depth - 2*Border */
1279 GLuint WidthLog2
; /**< = log2(Width2) */
1280 GLuint HeightLog2
; /**< = log2(Height2) */
1281 GLuint DepthLog2
; /**< = log2(Depth2) */
1282 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1284 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1285 GLuint Level
; /**< Which mipmap level am I? */
1286 /** Cube map face: index into gl_texture_object::Image[] array */
1292 * Indexes for cube map faces.
1307 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1308 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1310 struct gl_sampler_object
1315 GLenum WrapS
; /**< S-axis texture image wrap mode */
1316 GLenum WrapT
; /**< T-axis texture image wrap mode */
1317 GLenum WrapR
; /**< R-axis texture image wrap mode */
1318 GLenum MinFilter
; /**< minification filter */
1319 GLenum MagFilter
; /**< magnification filter */
1320 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1321 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1322 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1323 GLfloat LodBias
; /**< OpenGL 1.4 */
1324 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1325 GLenum CompareMode
; /**< GL_ARB_shadow */
1326 GLenum CompareFunc
; /**< GL_ARB_shadow */
1327 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1328 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1329 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1331 /* deprecated sampler state */
1332 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1337 * Texture object state. Contains the array of mipmap images, border color,
1338 * wrap modes, filter modes, and shadow/texcompare state.
1340 struct gl_texture_object
1342 _glthread_Mutex Mutex
; /**< for thread safety */
1343 GLint RefCount
; /**< reference count */
1344 GLuint Name
; /**< the user-visible texture object ID */
1345 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1347 struct gl_sampler_object Sampler
;
1349 GLfloat Priority
; /**< in [0,1] */
1350 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1351 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1352 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1353 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1354 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1355 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1356 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1357 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1358 GLboolean _Complete
; /**< Is texture object complete? */
1359 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1360 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1361 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1363 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1364 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1366 /** GL_ARB_texture_buffer_object */
1367 struct gl_buffer_object
*BufferObject
;
1368 GLenum BufferObjectFormat
;
1370 /** GL_OES_EGL_image_external */
1371 GLint RequiredTextureImageUnits
;
1375 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1376 #define MAX_COMBINER_TERMS 4
1380 * Texture combine environment state.
1382 struct gl_tex_env_combine_state
1384 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1385 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1386 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1387 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1388 GLenum SourceA
[MAX_COMBINER_TERMS
];
1389 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1390 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1391 GLenum OperandA
[MAX_COMBINER_TERMS
];
1392 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1393 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1394 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1395 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1400 * Texture coord generation state.
1404 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1405 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1406 GLfloat ObjectPlane
[4];
1407 GLfloat EyePlane
[4];
1412 * Texture unit state. Contains enable flags, texture environment/function/
1413 * combiners, texgen state, and pointers to current texture objects.
1415 struct gl_texture_unit
1417 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1418 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1420 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1421 GLclampf EnvColor
[4];
1422 GLfloat EnvColorUnclamped
[4];
1424 struct gl_texgen GenS
;
1425 struct gl_texgen GenT
;
1426 struct gl_texgen GenR
;
1427 struct gl_texgen GenQ
;
1428 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1429 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1431 GLfloat LodBias
; /**< for biasing mipmap levels */
1433 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1435 /** Current sampler object (GL_ARB_sampler_objects) */
1436 struct gl_sampler_object
*Sampler
;
1439 * \name GL_EXT_texture_env_combine
1441 struct gl_tex_env_combine_state Combine
;
1444 * Derived state based on \c EnvMode and the \c BaseFormat of the
1445 * currently enabled texture.
1447 struct gl_tex_env_combine_state _EnvMode
;
1450 * Currently enabled combiner state. This will point to either
1451 * \c Combine or \c _EnvMode.
1453 struct gl_tex_env_combine_state
*_CurrentCombine
;
1455 /** Current texture object pointers */
1456 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1458 /** Points to highest priority, complete and enabled texture object */
1459 struct gl_texture_object
*_Current
;
1464 * Texture attribute group (GL_TEXTURE_BIT).
1466 struct gl_texture_attrib
1468 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1469 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1471 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1473 /** GL_ARB_texture_buffer_object */
1474 struct gl_buffer_object
*BufferObject
;
1476 /** GL_ARB_seamless_cubemap */
1477 GLboolean CubeMapSeamless
;
1479 /** Texture units/samplers used by vertex or fragment texturing */
1480 GLbitfield _EnabledUnits
;
1482 /** Texture coord units/sets used for fragment texturing */
1483 GLbitfield _EnabledCoordUnits
;
1485 /** Texture coord units that have texgen enabled */
1486 GLbitfield _TexGenEnabled
;
1488 /** Texture coord units that have non-identity matrices */
1489 GLbitfield _TexMatEnabled
;
1491 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1492 GLbitfield _GenFlags
;
1497 * Data structure representing a single clip plane (e.g. one of the elements
1498 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1500 typedef GLfloat gl_clip_plane
[4];
1504 * Transformation attribute group (GL_TRANSFORM_BIT).
1506 struct gl_transform_attrib
1508 GLenum MatrixMode
; /**< Matrix mode */
1509 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1510 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1511 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1512 GLboolean Normalize
; /**< Normalize all normals? */
1513 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1514 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1515 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1517 GLfloat CullEyePos
[4];
1518 GLfloat CullObjPos
[4];
1523 * Viewport attribute group (GL_VIEWPORT_BIT).
1525 struct gl_viewport_attrib
1527 GLint X
, Y
; /**< position */
1528 GLsizei Width
, Height
; /**< size */
1529 GLfloat Near
, Far
; /**< Depth buffer range */
1530 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1535 * GL_ARB_vertex/pixel_buffer_object buffer object
1537 struct gl_buffer_object
1539 _glthread_Mutex Mutex
;
1542 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1543 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1544 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1545 /** Fields describing a mapped buffer */
1547 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1548 GLvoid
*Pointer
; /**< User-space address of mapping */
1549 GLintptr Offset
; /**< Mapped offset */
1550 GLsizeiptr Length
; /**< Mapped length */
1552 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1553 GLboolean Written
; /**< Ever written to? (for debugging) */
1554 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1559 * Client pixel packing/unpacking attributes
1561 struct gl_pixelstore_attrib
1569 GLboolean SwapBytes
;
1571 GLboolean Invert
; /**< GL_MESA_pack_invert */
1572 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1577 * Client vertex array attributes
1579 struct gl_client_array
1581 GLint Size
; /**< components per element (1,2,3,4) */
1582 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1583 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1584 GLsizei Stride
; /**< user-specified stride */
1585 GLsizei StrideB
; /**< actual stride in bytes */
1586 const GLubyte
*Ptr
; /**< Points to array data */
1587 GLboolean Enabled
; /**< Enabled flag is a boolean */
1588 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1589 GLboolean Integer
; /**< Integer-valued? */
1590 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1591 GLuint _ElementSize
; /**< size of each element in bytes */
1593 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1594 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1599 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1600 * extension, but a nice encapsulation in any case.
1602 struct gl_array_object
1604 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1608 _glthread_Mutex Mutex
;
1609 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1611 /** Vertex attribute arrays */
1612 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1614 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1615 GLbitfield64 _Enabled
;
1618 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1619 * we can determine the max legal (in bounds) glDrawElements array index.
1623 struct gl_buffer_object
*ElementArrayBufferObj
;
1628 * Vertex array state
1630 struct gl_array_attrib
1632 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1633 struct gl_array_object
*ArrayObj
;
1635 /** The default vertex array object */
1636 struct gl_array_object
*DefaultArrayObj
;
1638 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1639 struct _mesa_HashTable
*Objects
;
1641 GLint ActiveTexture
; /**< Client Active Texture */
1642 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1643 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1645 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1646 GLboolean PrimitiveRestart
;
1647 GLuint RestartIndex
;
1649 GLbitfield64 NewState
; /**< mask of VERT_BIT_* values */
1650 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1652 /* GL_ARB_vertex_buffer_object */
1653 struct gl_buffer_object
*ArrayBufferObj
;
1658 * Feedback buffer state
1663 GLbitfield _Mask
; /**< FB_* bits */
1671 * Selection buffer state
1675 GLuint
*Buffer
; /**< selection buffer */
1676 GLuint BufferSize
; /**< size of the selection buffer */
1677 GLuint BufferCount
; /**< number of values in the selection buffer */
1678 GLuint Hits
; /**< number of records in the selection buffer */
1679 GLuint NameStackDepth
; /**< name stack depth */
1680 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1681 GLboolean HitFlag
; /**< hit flag */
1682 GLfloat HitMinZ
; /**< minimum hit depth */
1683 GLfloat HitMaxZ
; /**< maximum hit depth */
1688 * 1-D Evaluator control points
1692 GLuint Order
; /**< Number of control points */
1693 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1694 GLfloat
*Points
; /**< Points to contiguous control points */
1699 * 2-D Evaluator control points
1703 GLuint Uorder
; /**< Number of control points in U dimension */
1704 GLuint Vorder
; /**< Number of control points in V dimension */
1707 GLfloat
*Points
; /**< Points to contiguous control points */
1712 * All evaluator control point state
1714 struct gl_evaluators
1720 struct gl_1d_map Map1Vertex3
;
1721 struct gl_1d_map Map1Vertex4
;
1722 struct gl_1d_map Map1Index
;
1723 struct gl_1d_map Map1Color4
;
1724 struct gl_1d_map Map1Normal
;
1725 struct gl_1d_map Map1Texture1
;
1726 struct gl_1d_map Map1Texture2
;
1727 struct gl_1d_map Map1Texture3
;
1728 struct gl_1d_map Map1Texture4
;
1729 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1736 struct gl_2d_map Map2Vertex3
;
1737 struct gl_2d_map Map2Vertex4
;
1738 struct gl_2d_map Map2Index
;
1739 struct gl_2d_map Map2Color4
;
1740 struct gl_2d_map Map2Normal
;
1741 struct gl_2d_map Map2Texture1
;
1742 struct gl_2d_map Map2Texture2
;
1743 struct gl_2d_map Map2Texture3
;
1744 struct gl_2d_map Map2Texture4
;
1745 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1751 * Names of the various vertex/fragment program register files, etc.
1753 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1754 * All values should fit in a 4-bit field.
1756 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1757 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1758 * be "uniform" variables since they can only be set outside glBegin/End.
1759 * They're also all stored in the same Parameters array.
1763 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1764 PROGRAM_INPUT
, /**< machine->Inputs[] */
1765 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1766 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1767 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1768 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1769 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1770 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1771 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1772 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1773 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1774 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1775 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1776 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1777 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1783 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1784 * one of these values.
1788 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1789 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1790 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1791 SYSTEM_VALUE_MAX
/**< Number of values */
1796 * The possible interpolation qualifiers that can be applied to a fragment
1797 * shader input in GLSL.
1799 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1800 * gl_fragment_program data structure to 0 causes the default behavior.
1802 enum glsl_interp_qualifier
1804 INTERP_QUALIFIER_NONE
= 0,
1805 INTERP_QUALIFIER_SMOOTH
,
1806 INTERP_QUALIFIER_FLAT
,
1807 INTERP_QUALIFIER_NOPERSPECTIVE
1811 /** Vertex and fragment instructions */
1812 struct prog_instruction
;
1813 struct gl_program_parameter_list
;
1814 struct gl_uniform_list
;
1816 /** Post-link transform feedback info. */
1817 struct gl_transform_feedback_info
{
1818 unsigned NumOutputs
;
1821 unsigned OutputRegister
;
1822 unsigned OutputBuffer
;
1823 unsigned NumComponents
;
1824 } Outputs
[MAX_PROGRAM_OUTPUTS
];
1828 * Base class for any kind of program object
1833 GLubyte
*String
; /**< Null-terminated program text */
1835 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1836 GLenum Format
; /**< String encoding format */
1839 struct prog_instruction
*Instructions
;
1841 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1842 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1843 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1844 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1845 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1846 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1847 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1848 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1851 /** Named parameters, constants, etc. from program text */
1852 struct gl_program_parameter_list
*Parameters
;
1853 /** Numbered local parameters */
1854 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1856 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1857 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1858 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1859 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1861 /** Bitmask of which register files are read/written with indirect
1862 * addressing. Mask of (1 << PROGRAM_x) bits.
1864 GLbitfield IndirectRegisterFiles
;
1866 /** Logical counts */
1868 GLuint NumInstructions
;
1869 GLuint NumTemporaries
;
1870 GLuint NumParameters
;
1871 GLuint NumAttributes
;
1872 GLuint NumAddressRegs
;
1873 GLuint NumAluInstructions
;
1874 GLuint NumTexInstructions
;
1875 GLuint NumTexIndirections
;
1877 /** Native, actual h/w counts */
1879 GLuint NumNativeInstructions
;
1880 GLuint NumNativeTemporaries
;
1881 GLuint NumNativeParameters
;
1882 GLuint NumNativeAttributes
;
1883 GLuint NumNativeAddressRegs
;
1884 GLuint NumNativeAluInstructions
;
1885 GLuint NumNativeTexInstructions
;
1886 GLuint NumNativeTexIndirections
;
1891 /** Vertex program object */
1892 struct gl_vertex_program
1894 struct gl_program Base
; /**< base class */
1895 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1896 GLboolean IsPositionInvariant
;
1897 GLboolean UsesClipDistance
;
1901 /** Geometry program object */
1902 struct gl_geometry_program
1904 struct gl_program Base
; /**< base class */
1907 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1908 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1909 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1913 /** Fragment program object */
1914 struct gl_fragment_program
1916 struct gl_program Base
; /**< base class */
1917 GLboolean UsesKill
; /**< shader uses KIL instruction */
1918 GLboolean OriginUpperLeft
;
1919 GLboolean PixelCenterInteger
;
1920 enum gl_frag_depth_layout FragDepthLayout
;
1923 * GLSL interpolation qualifier associated with each fragment shader input.
1924 * For inputs that do not have an interpolation qualifier specified in
1925 * GLSL, the value is INTERP_QUALIFIER_NONE.
1927 enum glsl_interp_qualifier InterpQualifier
[FRAG_ATTRIB_MAX
];
1932 * State common to vertex and fragment programs.
1934 struct gl_program_state
1936 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1937 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1942 * Context state for vertex programs.
1944 struct gl_vertex_program_state
1946 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1947 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1948 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1949 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1950 /** Computed two sided lighting for fixed function/programs. */
1951 GLboolean _TwoSideEnabled
;
1952 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1954 /** Currently enabled and valid vertex program (including internal
1955 * programs, user-defined vertex programs and GLSL vertex shaders).
1956 * This is the program we must use when rendering.
1958 struct gl_vertex_program
*_Current
;
1960 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1962 /* For GL_NV_vertex_program only: */
1963 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1964 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1966 /** Should fixed-function T&L be implemented with a vertex prog? */
1967 GLboolean _MaintainTnlProgram
;
1969 /** Program to emulate fixed-function T&L (see above) */
1970 struct gl_vertex_program
*_TnlProgram
;
1972 /** Cache of fixed-function programs */
1973 struct gl_program_cache
*Cache
;
1975 GLboolean _Overriden
;
1980 * Context state for geometry programs.
1982 struct gl_geometry_program_state
1984 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1985 GLboolean _Enabled
; /**< Enabled and valid program? */
1986 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1988 /** Currently enabled and valid program (including internal programs
1989 * and compiled shader programs).
1991 struct gl_geometry_program
*_Current
;
1993 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1995 /** Cache of fixed-function programs */
1996 struct gl_program_cache
*Cache
;
2000 * Context state for fragment programs.
2002 struct gl_fragment_program_state
2004 GLboolean Enabled
; /**< User-set fragment program enable flag */
2005 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2006 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2008 /** Currently enabled and valid fragment program (including internal
2009 * programs, user-defined fragment programs and GLSL fragment shaders).
2010 * This is the program we must use when rendering.
2012 struct gl_fragment_program
*_Current
;
2014 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2016 /** Should fixed-function texturing be implemented with a fragment prog? */
2017 GLboolean _MaintainTexEnvProgram
;
2019 /** Program to emulate fixed-function texture env/combine (see above) */
2020 struct gl_fragment_program
*_TexEnvProgram
;
2022 /** Cache of fixed-function programs */
2023 struct gl_program_cache
*Cache
;
2028 * ATI_fragment_shader runtime state
2030 #define ATI_FS_INPUT_PRIMARY 0
2031 #define ATI_FS_INPUT_SECONDARY 1
2033 struct atifs_instruction
;
2034 struct atifs_setupinst
;
2037 * ATI fragment shader
2039 struct ati_fragment_shader
2043 struct atifs_instruction
*Instructions
[2];
2044 struct atifs_setupinst
*SetupInst
[2];
2045 GLfloat Constants
[8][4];
2046 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2047 GLubyte numArithInstr
[2];
2048 GLubyte regsAssigned
[2];
2049 GLubyte NumPasses
; /**< 1 or 2 */
2051 GLubyte last_optype
;
2052 GLboolean interpinp1
;
2058 * Context state for GL_ATI_fragment_shader
2060 struct gl_ati_fragment_shader_state
2063 GLboolean _Enabled
; /**< enabled and valid shader? */
2064 GLboolean Compiling
;
2065 GLfloat GlobalConstants
[8][4];
2066 struct ati_fragment_shader
*Current
;
2071 * Occlusion/timer query object.
2073 struct gl_query_object
2075 GLenum Target
; /**< The query target, when active */
2076 GLuint Id
; /**< hash table ID/name */
2077 GLuint64EXT Result
; /**< the counter */
2078 GLboolean Active
; /**< inside Begin/EndQuery */
2079 GLboolean Ready
; /**< result is ready? */
2084 * Context state for query objects.
2086 struct gl_query_state
2088 struct _mesa_HashTable
*QueryObjects
;
2089 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2090 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2092 /** GL_NV_conditional_render */
2093 struct gl_query_object
*CondRenderQuery
;
2095 /** GL_EXT_transform_feedback */
2096 struct gl_query_object
*PrimitivesGenerated
;
2097 struct gl_query_object
*PrimitivesWritten
;
2099 /** GL_ARB_timer_query */
2100 struct gl_query_object
*TimeElapsed
;
2102 GLenum CondRenderMode
;
2106 /** Sync object state */
2107 struct gl_sync_object
{
2108 struct simple_node link
;
2109 GLenum Type
; /**< GL_SYNC_FENCE */
2110 GLuint Name
; /**< Fence name */
2111 GLint RefCount
; /**< Reference count */
2112 GLboolean DeletePending
; /**< Object was deleted while there were still
2113 * live references (e.g., sync not yet finished)
2115 GLenum SyncCondition
;
2116 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2117 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2121 /** Set by #pragma directives */
2122 struct gl_sl_pragmas
2124 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2125 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2126 GLboolean Optimize
; /**< defaults on */
2127 GLboolean Debug
; /**< defaults off */
2132 * A GLSL vertex or fragment shader object.
2136 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2137 GLuint Name
; /**< AKA the handle */
2138 GLint RefCount
; /**< Reference count */
2139 GLboolean DeletePending
;
2140 GLboolean CompileStatus
;
2141 const GLchar
*Source
; /**< Source code string */
2142 GLuint SourceChecksum
; /**< for debug/logging purposes */
2143 struct gl_program
*Program
; /**< Post-compile assembly code */
2145 struct gl_sl_pragmas Pragmas
;
2147 unsigned Version
; /**< GLSL version used for linking */
2149 unsigned num_samplers
; /**< Number of samplers used by this shader.
2150 * This field is only set post-linking.
2153 * Number of uniform components used by this shader.
2155 * This field is only set post-linking.
2157 unsigned num_uniform_components
;
2159 struct exec_list
*ir
;
2160 struct glsl_symbol_table
*symbols
;
2162 /** Shaders containing built-in functions that are used for linking. */
2163 struct gl_shader
*builtins_to_link
[16];
2164 unsigned num_builtins_to_link
;
2169 * A GLSL program object.
2170 * Basically a linked collection of vertex and fragment shaders.
2172 struct gl_shader_program
2174 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2175 GLuint Name
; /**< aka handle or ID */
2176 GLint RefCount
; /**< Reference count */
2177 GLboolean DeletePending
;
2180 * Flags that the linker should not reject the program if it lacks
2181 * a vertex or fragment shader. GLES2 doesn't allow separate
2182 * shader objects, and would reject them. However, we internally
2183 * build separate shader objects for fixed function programs, which
2184 * we use for drivers/common/meta.c and for handling
2185 * _mesa_update_state with no program bound (for example in
2188 GLboolean InternalSeparateShader
;
2190 GLuint NumShaders
; /**< number of attached shaders */
2191 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2194 * User-defined attribute bindings
2196 * These are set via \c glBindAttribLocation and are used to direct the
2197 * GLSL linker. These are \b not the values used in the compiled shader,
2198 * and they are \b not the values returned by \c glGetAttribLocation.
2200 struct string_to_uint_map
*AttributeBindings
;
2203 * User-defined fragment data bindings
2205 * These are set via \c glBindFragDataLocation and are used to direct the
2206 * GLSL linker. These are \b not the values used in the compiled shader,
2207 * and they are \b not the values returned by \c glGetFragDataLocation.
2209 struct string_to_uint_map
*FragDataBindings
;
2211 /** Transform feedback varyings */
2215 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2216 } TransformFeedback
;
2218 /** Post-link transform feedback info. */
2219 struct gl_transform_feedback_info LinkedTransformFeedback
;
2221 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2222 enum gl_frag_depth_layout FragDepthLayout
;
2224 /** Geometry shader state - copied into gl_geometry_program at link time */
2227 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2228 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2229 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2232 /** Vertex shader state - copied into gl_vertex_program at link time */
2234 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2237 /* post-link info: */
2238 unsigned NumUserUniformStorage
;
2239 struct gl_uniform_storage
*UniformStorage
;
2242 * Map of active uniform names to locations
2244 * Maps any active uniform that is not an array element to a location.
2245 * Each active uniform, including individual structure members will appear
2246 * in this map. This roughly corresponds to the set of names that would be
2247 * enumerated by \c glGetActiveUniform.
2249 struct string_to_uint_map
*UniformHash
;
2252 * Map from sampler unit to texture unit (set by glUniform1i())
2254 * A sampler unit is associated with each sampler uniform by the linker.
2255 * The sampler unit associated with each uniform is stored in the
2256 * \c gl_uniform_storage::sampler field.
2258 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2259 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2260 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2262 struct gl_program_parameter_list
*Varying
;
2263 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2264 GLboolean Validated
;
2265 GLboolean _Used
; /**< Ever used for drawing? */
2268 unsigned Version
; /**< GLSL version used for linking */
2271 * Per-stage shaders resulting from the first stage of linking.
2273 * Set of linked shaders for this program. The array is accessed using the
2274 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2277 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2281 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2282 #define GLSL_LOG 0x2 /**< Write shaders to files */
2283 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2284 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2285 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2286 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2287 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2288 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2292 * Context state for GLSL vertex/fragment shaders.
2294 struct gl_shader_state
2297 * Programs used for rendering
2299 * There is a separate program set for each shader stage. If
2300 * GL_EXT_separate_shader_objects is not supported, each of these must point
2301 * to \c NULL or to the same program.
2303 struct gl_shader_program
*CurrentVertexProgram
;
2304 struct gl_shader_program
*CurrentGeometryProgram
;
2305 struct gl_shader_program
*CurrentFragmentProgram
;
2308 * Program used by glUniform calls.
2310 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2312 struct gl_shader_program
*ActiveProgram
;
2314 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2318 * Compiler options for a single GLSL shaders type
2320 struct gl_shader_compiler_options
2322 /** Driver-selectable options: */
2323 GLboolean EmitCondCodes
; /**< Use condition codes? */
2324 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2325 GLboolean EmitNoLoops
;
2326 GLboolean EmitNoFunctions
;
2327 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2328 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2329 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2330 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2331 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2334 * \name Forms of indirect addressing the driver cannot do.
2337 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2338 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2339 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2340 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2343 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2344 GLuint MaxUnrollIterations
;
2346 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2350 * Transform feedback object state
2352 struct gl_transform_feedback_object
2354 GLuint Name
; /**< AKA the object ID */
2356 GLboolean Active
; /**< Is transform feedback enabled? */
2357 GLboolean Paused
; /**< Is transform feedback paused? */
2359 /** The feedback buffers */
2360 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2361 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2363 /** Start of feedback data in dest buffer */
2364 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2365 /** Max data to put into dest buffer (in bytes) */
2366 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2371 * Context state for transform feedback.
2373 struct gl_transform_feedback
2375 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2377 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2379 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2380 struct gl_buffer_object
*CurrentBuffer
;
2382 /** The table of all transform feedback objects */
2383 struct _mesa_HashTable
*Objects
;
2385 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2386 struct gl_transform_feedback_object
*CurrentObject
;
2388 /** The default xform-fb object (Name==0) */
2389 struct gl_transform_feedback_object
*DefaultObject
;
2395 * State which can be shared by multiple contexts:
2397 struct gl_shared_state
2399 _glthread_Mutex Mutex
; /**< for thread safety */
2400 GLint RefCount
; /**< Reference count */
2401 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2402 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2404 /** Default texture objects (shared by all texture units) */
2405 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2407 /** Fallback texture used when a bound texture is incomplete */
2408 struct gl_texture_object
*FallbackTex
;
2411 * \name Thread safety and statechange notification for texture
2414 * \todo Improve the granularity of locking.
2417 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2418 GLuint TextureStateStamp
; /**< state notification for shared tex */
2421 /** Default buffer object for vertex arrays that aren't in VBOs */
2422 struct gl_buffer_object
*NullBufferObj
;
2425 * \name Vertex/geometry/fragment programs
2428 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2429 struct gl_vertex_program
*DefaultVertexProgram
;
2430 struct gl_fragment_program
*DefaultFragmentProgram
;
2431 struct gl_geometry_program
*DefaultGeometryProgram
;
2434 /* GL_ATI_fragment_shader */
2435 struct _mesa_HashTable
*ATIShaders
;
2436 struct ati_fragment_shader
*DefaultFragmentShader
;
2438 struct _mesa_HashTable
*BufferObjects
;
2440 /** Table of both gl_shader and gl_shader_program objects */
2441 struct _mesa_HashTable
*ShaderObjects
;
2443 /* GL_EXT_framebuffer_object */
2444 struct _mesa_HashTable
*RenderBuffers
;
2445 struct _mesa_HashTable
*FrameBuffers
;
2448 struct simple_node SyncObjects
;
2450 /** GL_ARB_sampler_objects */
2451 struct _mesa_HashTable
*SamplerObjects
;
2453 void *DriverData
; /**< Device driver shared state */
2460 * A renderbuffer stores colors or depth values or stencil values.
2461 * A framebuffer object will have a collection of these.
2462 * Data are read/written to the buffer with a handful of Get/Put functions.
2464 * Instances of this object are allocated with the Driver's NewRenderbuffer
2465 * hook. Drivers will likely wrap this class inside a driver-specific
2466 * class to simulate inheritance.
2468 struct gl_renderbuffer
2470 _glthread_Mutex Mutex
; /**< for thread safety */
2471 GLuint ClassID
; /**< Useful for drivers */
2474 GLuint Width
, Height
;
2475 GLint RowStride
; /**< Padded width in units of pixels */
2476 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2478 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2482 GLenum InternalFormat
; /**< The user-specified format */
2483 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2484 GL_STENCIL_INDEX. */
2485 gl_format Format
; /**< The actual renderbuffer memory format */
2487 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2488 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2490 /* Used to wrap one renderbuffer around another: */
2491 struct gl_renderbuffer
*Wrapped
;
2493 /* Delete this renderbuffer */
2494 void (*Delete
)(struct gl_renderbuffer
*rb
);
2496 /* Allocate new storage for this renderbuffer */
2497 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2498 GLenum internalFormat
,
2499 GLuint width
, GLuint height
);
2501 /* Lock/Unlock are called before/after calling the Get/Put functions.
2502 * Not sure this is the right place for these yet.
2503 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2504 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2507 /* Return a pointer to the element/pixel at (x,y).
2508 * Should return NULL if the buffer memory can't be directly addressed.
2510 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2513 /* Get/Read a row of values.
2514 * The values will be of format _BaseFormat and type DataType.
2516 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2517 GLint x
, GLint y
, void *values
);
2519 /* Get/Read values at arbitrary locations.
2520 * The values will be of format _BaseFormat and type DataType.
2522 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2523 const GLint x
[], const GLint y
[], void *values
);
2525 /* Put/Write a row of values.
2526 * The values will be of format _BaseFormat and type DataType.
2528 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2529 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2531 /* Put/Write a row of RGB values. This is a special-case routine that's
2532 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2533 * a common case for glDrawPixels and some triangle routines.
2534 * The values will be of format GL_RGB and type DataType.
2536 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2537 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2540 /* Put/Write a row of identical values.
2541 * The values will be of format _BaseFormat and type DataType.
2543 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2544 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2546 /* Put/Write values at arbitrary locations.
2547 * The values will be of format _BaseFormat and type DataType.
2549 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2550 const GLint x
[], const GLint y
[], const void *values
,
2551 const GLubyte
*mask
);
2552 /* Put/Write identical values at arbitrary locations.
2553 * The values will be of format _BaseFormat and type DataType.
2555 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2556 GLuint count
, const GLint x
[], const GLint y
[],
2557 const void *value
, const GLubyte
*mask
);
2562 * A renderbuffer attachment points to either a texture object (and specifies
2563 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2565 struct gl_renderbuffer_attachment
2567 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2571 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2572 * application supplied renderbuffer object.
2574 struct gl_renderbuffer
*Renderbuffer
;
2577 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2578 * supplied texture object.
2580 struct gl_texture_object
*Texture
;
2581 GLuint TextureLevel
; /**< Attached mipmap level. */
2582 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2583 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2584 * and 2D array textures */
2589 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2590 * In C++ terms, think of this as a base class from which device drivers
2591 * will make derived classes.
2593 struct gl_framebuffer
2595 _glthread_Mutex Mutex
; /**< for thread safety */
2597 * If zero, this is a window system framebuffer. If non-zero, this
2598 * is a FBO framebuffer; note that for some devices (i.e. those with
2599 * a natural pixel coordinate system for FBOs that differs from the
2600 * OpenGL/Mesa coordinate system), this means that the viewport,
2601 * polygon face orientation, and polygon stipple will have to be inverted.
2606 GLboolean DeletePending
;
2609 * The framebuffer's visual. Immutable if this is a window system buffer.
2610 * Computed from attachments if user-made FBO.
2612 struct gl_config Visual
;
2614 GLboolean Initialized
;
2616 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2618 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2620 GLint _Xmin
, _Xmax
; /**< inclusive */
2621 GLint _Ymin
, _Ymax
; /**< exclusive */
2624 /** \name Derived Z buffer stuff */
2626 GLuint _DepthMax
; /**< Max depth buffer value */
2627 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2628 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2631 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2634 /** Integer color values */
2635 GLboolean _IntegerColor
;
2637 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2638 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2640 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2641 * attribute group and GL_PIXEL attribute group, respectively.
2643 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2644 GLenum ColorReadBuffer
;
2646 /** Computed from ColorDraw/ReadBuffer above */
2647 GLuint _NumColorDrawBuffers
;
2648 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2649 GLint _ColorReadBufferIndex
; /* -1 = None */
2650 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2651 struct gl_renderbuffer
*_ColorReadBuffer
;
2653 /** Wrappers to make combined depth/stencil buffers look like separate
2654 * buffers. Only used by swrast. Will be removed in the future.
2656 struct gl_renderbuffer
*_DepthBuffer
;
2657 struct gl_renderbuffer
*_StencilBuffer
;
2659 /** Delete this framebuffer */
2660 void (*Delete
)(struct gl_framebuffer
*fb
);
2665 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2669 GLushort RangeMin
; /**< min value exponent */
2670 GLushort RangeMax
; /**< max value exponent */
2671 GLushort Precision
; /**< number of mantissa bits */
2676 * Limits for vertex, geometry and fragment programs/shaders.
2678 struct gl_program_constants
2680 /* logical limits */
2681 GLuint MaxInstructions
;
2682 GLuint MaxAluInstructions
;
2683 GLuint MaxTexInstructions
;
2684 GLuint MaxTexIndirections
;
2687 GLuint MaxAddressRegs
;
2688 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2689 GLuint MaxParameters
;
2690 GLuint MaxLocalParams
;
2691 GLuint MaxEnvParams
;
2692 /* native/hardware limits */
2693 GLuint MaxNativeInstructions
;
2694 GLuint MaxNativeAluInstructions
;
2695 GLuint MaxNativeTexInstructions
;
2696 GLuint MaxNativeTexIndirections
;
2697 GLuint MaxNativeAttribs
;
2698 GLuint MaxNativeTemps
;
2699 GLuint MaxNativeAddressRegs
;
2700 GLuint MaxNativeParameters
;
2702 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2703 /* ES 2.0 and GL_ARB_ES2_compatibility */
2704 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2705 struct gl_precision LowInt
, MediumInt
, HighInt
;
2710 * Constants which may be overridden by device driver during context creation
2711 * but are never changed after that.
2715 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2716 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2717 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2718 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2719 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2720 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2721 GLuint MaxTextureCoordUnits
;
2722 GLuint MaxTextureImageUnits
;
2723 GLuint MaxVertexTextureImageUnits
;
2724 GLuint MaxCombinedTextureImageUnits
;
2725 GLuint MaxGeometryTextureImageUnits
;
2726 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2727 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2728 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2729 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2731 GLuint MaxArrayLockSize
;
2735 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2736 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2737 GLfloat PointSizeGranularity
;
2738 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2739 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2740 GLfloat LineWidthGranularity
;
2742 GLuint MaxColorTableSize
;
2744 GLuint MaxClipPlanes
;
2746 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2747 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2749 GLuint MaxViewportWidth
, MaxViewportHeight
;
2751 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2752 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2753 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2754 GLuint MaxProgramMatrices
;
2755 GLuint MaxProgramMatrixStackDepth
;
2757 /** vertex array / buffer object bounds checking */
2758 GLboolean CheckArrayBounds
;
2760 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2762 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2763 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2764 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2766 /** Number of varying vectors between vertex and fragment shaders */
2768 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2769 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2771 /** GL_ARB_geometry_shader4 */
2772 GLuint MaxGeometryOutputVertices
;
2773 GLuint MaxGeometryTotalOutputComponents
;
2775 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2778 * Does the driver support real 32-bit integers? (Otherwise, integers are
2779 * simulated via floats.)
2781 GLboolean NativeIntegers
;
2784 * If the driver supports real 32-bit integers, what integer value should be
2785 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2787 GLuint UniformBooleanTrue
;
2789 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2790 GLbitfield SupportedBumpUnits
;
2793 * Maximum amount of time, measured in nanseconds, that the server can wait.
2795 GLuint64 MaxServerWaitTimeout
;
2797 /** GL_EXT_provoking_vertex */
2798 GLboolean QuadsFollowProvokingVertexConvention
;
2800 /** OpenGL version 3.0 */
2801 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2803 /** OpenGL version 3.2 */
2804 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2806 /** GL_EXT_transform_feedback */
2807 GLuint MaxTransformFeedbackSeparateAttribs
;
2808 GLuint MaxTransformFeedbackSeparateComponents
;
2809 GLuint MaxTransformFeedbackInterleavedComponents
;
2811 /** GL_EXT_gpu_shader4 */
2812 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2814 /* GL_EXT_framebuffer_sRGB */
2815 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2817 /* GL_ARB_robustness */
2818 GLenum ResetStrategy
;
2821 * Whether the implementation strips out and ignores texture borders.
2823 * Many GPU hardware implementations don't support rendering with texture
2824 * borders and mipmapped textures. (Note: not static border color, but the
2825 * old 1-pixel border around each edge). Implementations then have to do
2826 * slow fallbacks to be correct, or just ignore the border and be fast but
2827 * wrong. Setting the flag stripts the border off of TexImage calls,
2828 * providing "fast but wrong" at significantly reduced driver complexity.
2830 * Texture borders are deprecated in GL 3.0.
2832 GLboolean StripTextureBorder
;
2837 * Enable flag for each OpenGL extension. Different device drivers will
2838 * enable different extensions at runtime.
2840 struct gl_extensions
2842 GLboolean dummy
; /* don't remove this! */
2843 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2844 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2845 GLboolean ARB_ES2_compatibility
;
2846 GLboolean ARB_blend_func_extended
;
2847 GLboolean ARB_color_buffer_float
;
2848 GLboolean ARB_conservative_depth
;
2849 GLboolean ARB_copy_buffer
;
2850 GLboolean ARB_depth_buffer_float
;
2851 GLboolean ARB_depth_clamp
;
2852 GLboolean ARB_depth_texture
;
2853 GLboolean ARB_draw_buffers_blend
;
2854 GLboolean ARB_draw_elements_base_vertex
;
2855 GLboolean ARB_draw_instanced
;
2856 GLboolean ARB_fragment_coord_conventions
;
2857 GLboolean ARB_fragment_program
;
2858 GLboolean ARB_fragment_program_shadow
;
2859 GLboolean ARB_fragment_shader
;
2860 GLboolean ARB_framebuffer_object
;
2861 GLboolean ARB_explicit_attrib_location
;
2862 GLboolean ARB_geometry_shader4
;
2863 GLboolean ARB_half_float_pixel
;
2864 GLboolean ARB_half_float_vertex
;
2865 GLboolean ARB_instanced_arrays
;
2866 GLboolean ARB_map_buffer_range
;
2867 GLboolean ARB_occlusion_query
;
2868 GLboolean ARB_occlusion_query2
;
2869 GLboolean ARB_point_sprite
;
2870 GLboolean ARB_sampler_objects
;
2871 GLboolean ARB_seamless_cube_map
;
2872 GLboolean ARB_shader_objects
;
2873 GLboolean ARB_shader_stencil_export
;
2874 GLboolean ARB_shader_texture_lod
;
2875 GLboolean ARB_shading_language_100
;
2876 GLboolean ARB_shadow
;
2877 GLboolean ARB_shadow_ambient
;
2879 GLboolean ARB_texture_border_clamp
;
2880 GLboolean ARB_texture_buffer_object
;
2881 GLboolean ARB_texture_compression_rgtc
;
2882 GLboolean ARB_texture_cube_map
;
2883 GLboolean ARB_texture_env_combine
;
2884 GLboolean ARB_texture_env_crossbar
;
2885 GLboolean ARB_texture_env_dot3
;
2886 GLboolean ARB_texture_float
;
2887 GLboolean ARB_texture_multisample
;
2888 GLboolean ARB_texture_non_power_of_two
;
2889 GLboolean ARB_texture_rg
;
2890 GLboolean ARB_texture_rgb10_a2ui
;
2891 GLboolean ARB_texture_storage
;
2892 GLboolean ARB_timer_query
;
2893 GLboolean ARB_transform_feedback2
;
2894 GLboolean ARB_transpose_matrix
;
2895 GLboolean ARB_uniform_buffer_object
;
2896 GLboolean ARB_vertex_array_object
;
2897 GLboolean ARB_vertex_program
;
2898 GLboolean ARB_vertex_shader
;
2899 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2900 GLboolean ARB_window_pos
;
2901 GLboolean EXT_blend_color
;
2902 GLboolean EXT_blend_equation_separate
;
2903 GLboolean EXT_blend_func_separate
;
2904 GLboolean EXT_blend_minmax
;
2905 GLboolean EXT_clip_volume_hint
;
2906 GLboolean EXT_compiled_vertex_array
;
2907 GLboolean EXT_depth_bounds_test
;
2908 GLboolean EXT_draw_buffers2
;
2909 GLboolean EXT_draw_range_elements
;
2910 GLboolean EXT_fog_coord
;
2911 GLboolean EXT_framebuffer_blit
;
2912 GLboolean EXT_framebuffer_multisample
;
2913 GLboolean EXT_framebuffer_object
;
2914 GLboolean EXT_framebuffer_sRGB
;
2915 GLboolean EXT_gpu_program_parameters
;
2916 GLboolean EXT_gpu_shader4
;
2917 GLboolean EXT_packed_depth_stencil
;
2918 GLboolean EXT_packed_float
;
2919 GLboolean EXT_packed_pixels
;
2920 GLboolean EXT_pixel_buffer_object
;
2921 GLboolean EXT_point_parameters
;
2922 GLboolean EXT_provoking_vertex
;
2923 GLboolean EXT_rescale_normal
;
2924 GLboolean EXT_shadow_funcs
;
2925 GLboolean EXT_secondary_color
;
2926 GLboolean EXT_separate_shader_objects
;
2927 GLboolean EXT_separate_specular_color
;
2928 GLboolean EXT_stencil_two_side
;
2929 GLboolean EXT_texture3D
;
2930 GLboolean EXT_texture_array
;
2931 GLboolean EXT_texture_compression_latc
;
2932 GLboolean EXT_texture_compression_s3tc
;
2933 GLboolean EXT_texture_env_dot3
;
2934 GLboolean EXT_texture_filter_anisotropic
;
2935 GLboolean EXT_texture_integer
;
2936 GLboolean EXT_texture_mirror_clamp
;
2937 GLboolean EXT_texture_shared_exponent
;
2938 GLboolean EXT_texture_snorm
;
2939 GLboolean EXT_texture_sRGB
;
2940 GLboolean EXT_texture_sRGB_decode
;
2941 GLboolean EXT_texture_swizzle
;
2942 GLboolean EXT_transform_feedback
;
2943 GLboolean EXT_timer_query
;
2944 GLboolean EXT_vertex_array_bgra
;
2945 GLboolean OES_standard_derivatives
;
2946 /* vendor extensions */
2947 GLboolean AMD_seamless_cubemap_per_texture
;
2948 GLboolean APPLE_packed_pixels
;
2949 GLboolean APPLE_vertex_array_object
;
2950 GLboolean APPLE_object_purgeable
;
2951 GLboolean ATI_envmap_bumpmap
;
2952 GLboolean ATI_texture_compression_3dc
;
2953 GLboolean ATI_texture_mirror_once
;
2954 GLboolean ATI_texture_env_combine3
;
2955 GLboolean ATI_fragment_shader
;
2956 GLboolean ATI_separate_stencil
;
2957 GLboolean IBM_rasterpos_clip
;
2958 GLboolean IBM_multimode_draw_arrays
;
2959 GLboolean MESA_pack_invert
;
2960 GLboolean MESA_resize_buffers
;
2961 GLboolean MESA_ycbcr_texture
;
2962 GLboolean MESA_texture_array
;
2963 GLboolean NV_blend_square
;
2964 GLboolean NV_conditional_render
;
2965 GLboolean NV_fog_distance
;
2966 GLboolean NV_fragment_program
;
2967 GLboolean NV_fragment_program_option
;
2968 GLboolean NV_light_max_exponent
;
2969 GLboolean NV_point_sprite
;
2970 GLboolean NV_primitive_restart
;
2971 GLboolean NV_texture_barrier
;
2972 GLboolean NV_texgen_reflection
;
2973 GLboolean NV_texture_env_combine4
;
2974 GLboolean NV_texture_rectangle
;
2975 GLboolean NV_vertex_program
;
2976 GLboolean NV_vertex_program1_1
;
2977 GLboolean SGIS_texture_lod
;
2978 GLboolean TDFX_texture_compression_FXT1
;
2980 GLboolean OES_EGL_image
;
2981 GLboolean OES_draw_texture
;
2982 GLboolean OES_EGL_image_external
;
2983 GLboolean OES_compressed_ETC1_RGB8_texture
;
2984 GLboolean extension_sentinel
;
2985 /** The extension string */
2986 const GLubyte
*String
;
2987 /** Number of supported extensions */
2993 * A stack of matrices (projection, modelview, color, texture, etc).
2995 struct gl_matrix_stack
2997 GLmatrix
*Top
; /**< points into Stack */
2998 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2999 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3000 GLuint MaxDepth
; /**< size of Stack[] array */
3001 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3006 * \name Bits for image transfer operations
3007 * \sa __struct gl_contextRec::ImageTransferState.
3010 #define IMAGE_SCALE_BIAS_BIT 0x1
3011 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3012 #define IMAGE_MAP_COLOR_BIT 0x4
3013 #define IMAGE_CLAMP_BIT 0x800
3016 /** Pixel Transfer ops */
3017 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3018 IMAGE_SHIFT_OFFSET_BIT | \
3019 IMAGE_MAP_COLOR_BIT)
3022 * \name Bits to indicate what state has changed.
3025 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3026 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3027 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3028 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3029 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3030 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3031 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3032 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3033 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3034 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3035 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3036 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3037 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3038 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3039 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3040 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3041 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3042 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3043 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3044 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
3045 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3046 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3047 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3048 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3049 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3050 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3051 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3052 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3053 #define _NEW_BUFFER_OBJECT (1 << 28)
3054 #define _NEW_FRAG_CLAMP (1 << 29)
3055 #define _NEW_TRANSFORM_FEEDBACK (1 << 30) /**< gl_context::TransformFeedback */
3061 * \name A bunch of flags that we think might be useful to drivers.
3063 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3066 #define DD_FLATSHADE 0x1
3067 #define DD_SEPARATE_SPECULAR 0x2
3068 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3069 #define DD_TRI_LIGHT_TWOSIDE 0x8
3070 #define DD_TRI_UNFILLED 0x10
3071 #define DD_TRI_SMOOTH 0x20
3072 #define DD_TRI_STIPPLE 0x40
3073 #define DD_TRI_OFFSET 0x80
3074 #define DD_LINE_SMOOTH 0x100
3075 #define DD_LINE_STIPPLE 0x200
3076 #define DD_POINT_SMOOTH 0x400
3077 #define DD_POINT_ATTEN 0x800
3078 #define DD_TRI_TWOSTENCIL 0x1000
3083 * \name Define the state changes under which each of these bits might change
3086 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3087 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3088 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3089 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3090 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3091 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3092 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3093 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3094 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3095 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3096 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3097 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3098 #define _DD_NEW_POINT_SIZE _NEW_POINT
3099 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3104 * Composite state flags
3107 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3117 /* This has to be included here. */
3122 * Display list flags.
3123 * Strictly this is a tnl-private concept, but it doesn't seem
3124 * worthwhile adding a tnl private structure just to hold this one bit
3127 #define DLIST_DANGLING_REFS 0x1
3130 /** Opaque declaration of display list payload data type */
3131 union gl_dlist_node
;
3135 * Provide a location where information about a display list can be
3136 * collected. Could be extended with driverPrivate structures,
3137 * etc. in the future.
3139 struct gl_display_list
3142 GLbitfield Flags
; /**< DLIST_x flags */
3143 /** The dlist commands are in a linked list of nodes */
3144 union gl_dlist_node
*Head
;
3149 * State used during display list compilation and execution.
3151 struct gl_dlist_state
3153 GLuint CallDepth
; /**< Current recursion calling depth */
3155 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3156 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3157 GLuint CurrentPos
; /**< Index into current block of nodes */
3159 GLvertexformat ListVtxfmt
;
3161 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3162 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3164 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3165 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3167 GLubyte ActiveIndex
;
3168 GLfloat CurrentIndex
;
3170 GLubyte ActiveEdgeFlag
;
3171 GLboolean CurrentEdgeFlag
;
3174 /* State known to have been set by the currently-compiling display
3175 * list. Used to eliminate some redundant state changes.
3183 * Enum for the OpenGL APIs we know about and may support.
3194 * Mesa rendering context.
3196 * This is the central context data structure for Mesa. Almost all
3197 * OpenGL state is contained in this structure.
3198 * Think of this as a base class from which device drivers will derive
3201 * The struct gl_context typedef names this structure.
3205 /** State possibly shared with other contexts in the address space */
3206 struct gl_shared_state
*Shared
;
3208 /** \name API function pointer tables */
3211 struct _glapi_table
*Save
; /**< Display list save functions */
3212 struct _glapi_table
*Exec
; /**< Execute functions */
3213 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3216 struct gl_config Visual
;
3217 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3218 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3219 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3220 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3223 * Device driver function pointer table
3225 struct dd_function_table Driver
;
3227 void *DriverCtx
; /**< Points to device driver context/state */
3229 /** Core/Driver constants */
3230 struct gl_constants Const
;
3232 /** \name The various 4x4 matrix stacks */
3234 struct gl_matrix_stack ModelviewMatrixStack
;
3235 struct gl_matrix_stack ProjectionMatrixStack
;
3236 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3237 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3238 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3241 /** Combined modelview and projection matrix */
3242 GLmatrix _ModelProjectMatrix
;
3244 /** \name Display lists */
3245 struct gl_dlist_state ListState
;
3247 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3248 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3250 /** Extension information */
3251 struct gl_extensions Extensions
;
3254 GLuint VersionMajor
, VersionMinor
;
3255 char *VersionString
;
3257 /** \name State attribute stack (for glPush/PopAttrib) */
3259 GLuint AttribStackDepth
;
3260 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3263 /** \name Renderer attribute groups
3265 * We define a struct for each attribute group to make pushing and popping
3266 * attributes easy. Also it's a good organization.
3269 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3270 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3271 struct gl_current_attrib Current
; /**< Current attributes */
3272 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3273 struct gl_eval_attrib Eval
; /**< Eval attributes */
3274 struct gl_fog_attrib Fog
; /**< Fog attributes */
3275 struct gl_hint_attrib Hint
; /**< Hint attributes */
3276 struct gl_light_attrib Light
; /**< Light attributes */
3277 struct gl_line_attrib Line
; /**< Line attributes */
3278 struct gl_list_attrib List
; /**< List attributes */
3279 struct gl_multisample_attrib Multisample
;
3280 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3281 struct gl_point_attrib Point
; /**< Point attributes */
3282 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3283 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3284 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3285 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3286 struct gl_texture_attrib Texture
; /**< Texture attributes */
3287 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3288 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3291 /** \name Client attribute stack */
3293 GLuint ClientAttribStackDepth
;
3294 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3297 /** \name Client attribute groups */
3299 struct gl_array_attrib Array
; /**< Vertex arrays */
3300 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3301 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3302 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3305 /** \name Other assorted state (not pushed/popped on attribute stack) */
3307 struct gl_pixelmaps PixelMaps
;
3309 struct gl_evaluators EvalMap
; /**< All evaluators */
3310 struct gl_feedback Feedback
; /**< Feedback */
3311 struct gl_selection Select
; /**< Selection */
3313 struct gl_program_state Program
; /**< general program state */
3314 struct gl_vertex_program_state VertexProgram
;
3315 struct gl_fragment_program_state FragmentProgram
;
3316 struct gl_geometry_program_state GeometryProgram
;
3317 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3319 struct gl_shader_state Shader
; /**< GLSL shader object state */
3320 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3322 struct gl_query_state Query
; /**< occlusion, timer queries */
3324 struct gl_transform_feedback TransformFeedback
;
3326 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3327 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3330 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3332 /* GL_EXT_framebuffer_object */
3333 struct gl_renderbuffer
*CurrentRenderbuffer
;
3335 GLenum ErrorValue
; /**< Last error code */
3337 /* GL_ARB_robustness */
3341 * Recognize and silence repeated error debug messages in buggy apps.
3343 const char *ErrorDebugFmtString
;
3344 GLuint ErrorDebugCount
;
3346 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3347 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3349 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3351 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3353 /** \name Derived state */
3355 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3356 * state validation so they need to always be current.
3358 GLbitfield _TriangleCaps
;
3359 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3360 GLfloat _EyeZDir
[3];
3361 GLfloat _ModelViewInvScale
;
3362 GLboolean _NeedEyeCoords
;
3363 GLboolean _ForceEyeCoords
;
3365 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3367 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3368 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3371 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3373 /** \name For debugging/development only */
3375 GLboolean FirstTimeCurrent
;
3378 /** software compression/decompression supported or not */
3379 GLboolean Mesa_DXTn
;
3381 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3384 * Use dp4 (rather than mul/mad) instructions for position
3387 GLboolean mvp_with_dp4
;
3390 * \name Hooks for module contexts.
3392 * These will eventually live in the driver or elsewhere.
3395 void *swrast_context
;
3396 void *swsetup_context
;
3397 void *swtnl_context
;
3399 struct st_context
*st
;
3406 extern int MESA_VERBOSE
;
3407 extern int MESA_DEBUG_FLAGS
;
3408 # define MESA_FUNCTION __FUNCTION__
3410 # define MESA_VERBOSE 0
3411 # define MESA_DEBUG_FLAGS 0
3412 # define MESA_FUNCTION "a function"
3419 /** The MESA_VERBOSE var is a bitmask of these flags */
3422 VERBOSE_VARRAY
= 0x0001,
3423 VERBOSE_TEXTURE
= 0x0002,
3424 VERBOSE_MATERIAL
= 0x0004,
3425 VERBOSE_PIPELINE
= 0x0008,
3426 VERBOSE_DRIVER
= 0x0010,
3427 VERBOSE_STATE
= 0x0020,
3428 VERBOSE_API
= 0x0040,
3429 VERBOSE_DISPLAY_LIST
= 0x0100,
3430 VERBOSE_LIGHTING
= 0x0200,
3431 VERBOSE_PRIMS
= 0x0400,
3432 VERBOSE_VERTS
= 0x0800,
3433 VERBOSE_DISASSEM
= 0x1000,
3434 VERBOSE_DRAW
= 0x2000,
3435 VERBOSE_SWAPBUFFERS
= 0x4000
3439 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3442 DEBUG_ALWAYS_FLUSH
= 0x1
3451 #endif /* MTYPES_H */