2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include "main/glheader.h"
38 #include "main/config.h"
39 #include "main/mfeatures.h"
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
42 #include "main/simple_list.h" /* struct simple_node */
43 #include "main/formats.h" /* MESA_FORMAT_COUNT */
47 * Color channel data type.
50 typedef GLubyte GLchan
;
52 #define CHAN_MAXF 255.0F
53 #define CHAN_TYPE GL_UNSIGNED_BYTE
55 typedef GLushort GLchan
;
56 #define CHAN_MAX 65535
57 #define CHAN_MAXF 65535.0F
58 #define CHAN_TYPE GL_UNSIGNED_SHORT
60 typedef GLfloat GLchan
;
62 #define CHAN_MAXF 1.0F
63 #define CHAN_TYPE GL_FLOAT
65 #error "illegal number of color channel bits"
70 * Stencil buffer data type.
73 typedef GLubyte GLstencil
;
74 #elif STENCIL_BITS==16
75 typedef GLushort GLstencil
;
77 # error "illegal number of stencil bits"
82 * \name 64-bit extension of GLbitfield.
85 typedef GLuint64 GLbitfield64
;
87 /** Set a single bit */
88 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
92 * \name Some forward type declarations
95 struct _mesa_HashTable
;
96 struct gl_attrib_node
;
97 struct gl_list_extensions
;
99 struct gl_pixelstore_attrib
;
100 struct gl_program_cache
;
101 struct gl_texture_format
;
102 struct gl_texture_image
;
103 struct gl_texture_object
;
109 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
110 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
111 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
112 #define PRIM_UNKNOWN (GL_POLYGON+3)
116 * Shader stages. Note that these will become 5 with tessellation.
117 * These MUST have the same values as gallium's PIPE_SHADER_*
121 MESA_SHADER_VERTEX
= 0,
122 MESA_SHADER_FRAGMENT
= 1,
123 MESA_SHADER_GEOMETRY
= 2,
124 MESA_SHADER_TYPES
= 3
130 * Indexes for vertex program attributes.
131 * GL_NV_vertex_program aliases generic attributes over the conventional
132 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
133 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
134 * generic attributes are distinct/separate).
139 VERT_ATTRIB_WEIGHT
= 1,
140 VERT_ATTRIB_NORMAL
= 2,
141 VERT_ATTRIB_COLOR0
= 3,
142 VERT_ATTRIB_COLOR1
= 4,
144 VERT_ATTRIB_COLOR_INDEX
= 6,
145 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
146 VERT_ATTRIB_EDGEFLAG
= 7,
147 VERT_ATTRIB_TEX0
= 8,
148 VERT_ATTRIB_TEX1
= 9,
149 VERT_ATTRIB_TEX2
= 10,
150 VERT_ATTRIB_TEX3
= 11,
151 VERT_ATTRIB_TEX4
= 12,
152 VERT_ATTRIB_TEX5
= 13,
153 VERT_ATTRIB_TEX6
= 14,
154 VERT_ATTRIB_TEX7
= 15,
155 VERT_ATTRIB_GENERIC0
= 16,
156 VERT_ATTRIB_GENERIC1
= 17,
157 VERT_ATTRIB_GENERIC2
= 18,
158 VERT_ATTRIB_GENERIC3
= 19,
159 VERT_ATTRIB_GENERIC4
= 20,
160 VERT_ATTRIB_GENERIC5
= 21,
161 VERT_ATTRIB_GENERIC6
= 22,
162 VERT_ATTRIB_GENERIC7
= 23,
163 VERT_ATTRIB_GENERIC8
= 24,
164 VERT_ATTRIB_GENERIC9
= 25,
165 VERT_ATTRIB_GENERIC10
= 26,
166 VERT_ATTRIB_GENERIC11
= 27,
167 VERT_ATTRIB_GENERIC12
= 28,
168 VERT_ATTRIB_GENERIC13
= 29,
169 VERT_ATTRIB_GENERIC14
= 30,
170 VERT_ATTRIB_GENERIC15
= 31,
175 * Bitflags for vertex attributes.
176 * These are used in bitfields in many places.
179 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
180 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
181 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
182 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
183 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
184 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
185 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
186 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
187 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
188 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
189 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
190 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
191 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
192 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
193 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
194 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
195 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
196 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
197 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
198 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
199 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
200 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
201 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
202 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
203 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
204 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
205 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
206 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
207 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
208 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
209 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
210 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
212 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
213 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
218 * Indexes for vertex program result attributes. Note that
219 * vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
220 * assumptions about the layout of this enum.
224 VERT_RESULT_HPOS
= 0,
225 VERT_RESULT_COL0
= 1,
226 VERT_RESULT_COL1
= 2,
227 VERT_RESULT_FOGC
= 3,
228 VERT_RESULT_TEX0
= 4,
229 VERT_RESULT_TEX1
= 5,
230 VERT_RESULT_TEX2
= 6,
231 VERT_RESULT_TEX3
= 7,
232 VERT_RESULT_TEX4
= 8,
233 VERT_RESULT_TEX5
= 9,
234 VERT_RESULT_TEX6
= 10,
235 VERT_RESULT_TEX7
= 11,
236 VERT_RESULT_PSIZ
= 12,
237 VERT_RESULT_BFC0
= 13,
238 VERT_RESULT_BFC1
= 14,
239 VERT_RESULT_EDGE
= 15,
240 VERT_RESULT_VAR0
= 16, /**< shader varying */
241 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
245 /*********************************************/
248 * Indexes for geometry program attributes.
252 GEOM_ATTRIB_POSITION
= 0,
253 GEOM_ATTRIB_COLOR0
= 1,
254 GEOM_ATTRIB_COLOR1
= 2,
255 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
256 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
257 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
258 GEOM_ATTRIB_POINT_SIZE
= 6,
259 GEOM_ATTRIB_CLIP_VERTEX
= 7,
260 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
261 GEOM_ATTRIB_TEX_COORD
= 9,
263 GEOM_ATTRIB_VAR0
= 16,
264 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
268 * Bitflags for geometry attributes.
269 * These are used in bitfields in many places.
272 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
273 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
274 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
275 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
276 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
277 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
278 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
279 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
280 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
281 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
282 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
284 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
289 * Indexes for geometry program result attributes
294 GEOM_RESULT_COL0
= 1,
295 GEOM_RESULT_COL1
= 2,
296 GEOM_RESULT_SCOL0
= 3,
297 GEOM_RESULT_SCOL1
= 4,
298 GEOM_RESULT_FOGC
= 5,
299 GEOM_RESULT_TEX0
= 6,
300 GEOM_RESULT_TEX1
= 7,
301 GEOM_RESULT_TEX2
= 8,
302 GEOM_RESULT_TEX3
= 9,
303 GEOM_RESULT_TEX4
= 10,
304 GEOM_RESULT_TEX5
= 11,
305 GEOM_RESULT_TEX6
= 12,
306 GEOM_RESULT_TEX7
= 13,
307 GEOM_RESULT_PSIZ
= 14,
308 GEOM_RESULT_CLPV
= 15,
309 GEOM_RESULT_PRID
= 16,
310 GEOM_RESULT_LAYR
= 17,
311 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
312 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
313 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
318 * Indexes for fragment program input attributes. Note that
319 * vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
320 * assumptions about the layout of this enum.
324 FRAG_ATTRIB_WPOS
= 0,
325 FRAG_ATTRIB_COL0
= 1,
326 FRAG_ATTRIB_COL1
= 2,
327 FRAG_ATTRIB_FOGC
= 3,
328 FRAG_ATTRIB_TEX0
= 4,
329 FRAG_ATTRIB_TEX1
= 5,
330 FRAG_ATTRIB_TEX2
= 6,
331 FRAG_ATTRIB_TEX3
= 7,
332 FRAG_ATTRIB_TEX4
= 8,
333 FRAG_ATTRIB_TEX5
= 9,
334 FRAG_ATTRIB_TEX6
= 10,
335 FRAG_ATTRIB_TEX7
= 11,
336 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
337 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
338 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
339 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
343 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
345 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
347 * gl_vert_result values which have no corresponding gl_frag_attrib
348 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
349 * VERT_RESULT_EDGE) are converted to a value of -1.
351 static INLINE
int vert_result_to_frag_attrib(int vert_result
)
353 if (vert_result
>= VERT_RESULT_VAR0
)
354 return vert_result
- VERT_RESULT_VAR0
+ FRAG_ATTRIB_VAR0
;
355 else if (vert_result
<= VERT_RESULT_TEX7
)
362 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
364 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
366 * gl_frag_attrib values which have no corresponding gl_vert_result
367 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
369 static INLINE
int frag_attrib_to_vert_result(int frag_attrib
)
371 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
373 else if (frag_attrib
>= FRAG_ATTRIB_VAR0
)
374 return frag_attrib
- FRAG_ATTRIB_VAR0
+ VERT_RESULT_VAR0
;
380 * Bitflags for fragment program input attributes.
383 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
384 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
385 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
386 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
387 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
388 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
389 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
390 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
391 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
392 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
393 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
394 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
395 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
396 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
397 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
399 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
400 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
402 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
414 * Fragment program results
418 FRAG_RESULT_DEPTH
= 0,
419 FRAG_RESULT_STENCIL
= 1,
420 /* If a single color should be written to all render targets, this
421 * register is written. No FRAG_RESULT_DATAn will be written.
423 FRAG_RESULT_COLOR
= 2,
425 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
426 * or ARB_fragment_program fragment.color[n]) color results. If
427 * any are written, FRAG_RESULT_COLOR will not be written.
429 FRAG_RESULT_DATA0
= 3,
430 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
435 * Indexes for all renderbuffers
439 /* the four standard color buffers */
447 /* optional aux buffer */
449 /* generic renderbuffers */
462 * Bit flags for all renderbuffers
464 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
465 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
466 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
467 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
468 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
469 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
470 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
471 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
472 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
473 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
474 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
475 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
476 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
477 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
478 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
479 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
480 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
481 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
482 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
485 * Mask of all the color buffer bits (but not accum).
487 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
488 BUFFER_BIT_BACK_LEFT | \
489 BUFFER_BIT_FRONT_RIGHT | \
490 BUFFER_BIT_BACK_RIGHT | \
492 BUFFER_BIT_COLOR0 | \
493 BUFFER_BIT_COLOR1 | \
494 BUFFER_BIT_COLOR2 | \
495 BUFFER_BIT_COLOR3 | \
496 BUFFER_BIT_COLOR4 | \
497 BUFFER_BIT_COLOR5 | \
498 BUFFER_BIT_COLOR6 | \
503 * Framebuffer configuration (aka visual / pixelformat)
504 * Note: some of these fields should be boolean, but it appears that
505 * code in drivers/dri/common/util.c requires int-sized fields.
511 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
512 GLuint doubleBufferMode
;
515 GLboolean haveAccumBuffer
;
516 GLboolean haveDepthBuffer
;
517 GLboolean haveStencilBuffer
;
519 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
520 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
521 GLint rgbBits
; /* total bits for rgb */
522 GLint indexBits
; /* total bits for colorindex */
524 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
532 /* EXT_visual_rating / GLX 1.2 */
535 /* EXT_visual_info / GLX 1.2 */
536 GLint transparentPixel
;
537 /* colors are floats scaled to ints */
538 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
539 GLint transparentIndex
;
541 /* ARB_multisample / SGIS_multisample */
545 /* SGIX_pbuffer / GLX 1.3 */
546 GLint maxPbufferWidth
;
547 GLint maxPbufferHeight
;
548 GLint maxPbufferPixels
;
549 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
550 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
552 /* OML_swap_method */
555 /* EXT_texture_from_pixmap */
556 GLint bindToTextureRgb
;
557 GLint bindToTextureRgba
;
558 GLint bindToMipmapTexture
;
559 GLint bindToTextureTargets
;
562 /* EXT_framebuffer_sRGB */
568 * \name Bit flags used for updating material values.
571 #define MAT_ATTRIB_FRONT_AMBIENT 0
572 #define MAT_ATTRIB_BACK_AMBIENT 1
573 #define MAT_ATTRIB_FRONT_DIFFUSE 2
574 #define MAT_ATTRIB_BACK_DIFFUSE 3
575 #define MAT_ATTRIB_FRONT_SPECULAR 4
576 #define MAT_ATTRIB_BACK_SPECULAR 5
577 #define MAT_ATTRIB_FRONT_EMISSION 6
578 #define MAT_ATTRIB_BACK_EMISSION 7
579 #define MAT_ATTRIB_FRONT_SHININESS 8
580 #define MAT_ATTRIB_BACK_SHININESS 9
581 #define MAT_ATTRIB_FRONT_INDEXES 10
582 #define MAT_ATTRIB_BACK_INDEXES 11
583 #define MAT_ATTRIB_MAX 12
585 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
586 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
587 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
588 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
589 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
590 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
592 #define MAT_INDEX_AMBIENT 0
593 #define MAT_INDEX_DIFFUSE 1
594 #define MAT_INDEX_SPECULAR 2
596 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
597 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
598 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
599 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
600 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
601 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
602 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
603 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
604 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
605 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
606 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
607 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
610 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
611 MAT_BIT_FRONT_AMBIENT | \
612 MAT_BIT_FRONT_DIFFUSE | \
613 MAT_BIT_FRONT_SPECULAR | \
614 MAT_BIT_FRONT_SHININESS | \
615 MAT_BIT_FRONT_INDEXES)
617 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
618 MAT_BIT_BACK_AMBIENT | \
619 MAT_BIT_BACK_DIFFUSE | \
620 MAT_BIT_BACK_SPECULAR | \
621 MAT_BIT_BACK_SHININESS | \
622 MAT_BIT_BACK_INDEXES)
624 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
628 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
629 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
632 * Material shininess lookup table.
636 struct gl_shine_tab
*next
, *prev
;
637 GLfloat tab
[SHINE_TABLE_SIZE
+1];
644 * Light source state.
648 struct gl_light
*next
; /**< double linked list with sentinel */
649 struct gl_light
*prev
;
651 GLfloat Ambient
[4]; /**< ambient color */
652 GLfloat Diffuse
[4]; /**< diffuse color */
653 GLfloat Specular
[4]; /**< specular color */
654 GLfloat EyePosition
[4]; /**< position in eye coordinates */
655 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
656 GLfloat SpotExponent
;
657 GLfloat SpotCutoff
; /**< in degrees */
658 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
659 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
660 GLfloat ConstantAttenuation
;
661 GLfloat LinearAttenuation
;
662 GLfloat QuadraticAttenuation
;
663 GLboolean Enabled
; /**< On/off flag */
666 * \name Derived fields
669 GLbitfield _Flags
; /**< State */
671 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
672 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
673 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
674 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
675 GLfloat _VP_inf_spot_attenuation
;
677 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
678 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
679 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
680 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
681 GLfloat _dli
; /**< CI diffuse light intensity */
682 GLfloat _sli
; /**< CI specular light intensity */
692 GLfloat Ambient
[4]; /**< ambient color */
693 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
694 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
695 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
696 * or GL_SEPARATE_SPECULAR_COLOR */
705 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
710 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
712 struct gl_accum_attrib
714 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
719 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
721 struct gl_colorbuffer_attrib
723 GLuint ClearIndex
; /**< Index to use for glClear */
724 GLfloat ClearColorUnclamped
[4]; /**< Color to use for glClear*/
725 GLclampf ClearColor
[4]; /**< Color to use for glClear */
727 GLuint IndexMask
; /**< Color index write mask */
728 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4];/**< Each flag is 0xff or 0x0 */
730 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
733 * \name alpha testing
736 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
737 GLenum AlphaFunc
; /**< Alpha test function */
738 GLfloat AlphaRefUnclamped
;
739 GLclampf AlphaRef
; /**< Alpha reference value */
746 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
748 /* NOTE: this does _not_ depend on fragment clamping or any other clamping control,
749 * only on the fixed-pointness of the render target.
750 * The query does however depend on fragment color clamping.
752 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
753 GLfloat BlendColor
[4]; /**< Blending color */
757 GLenum SrcRGB
; /**< RGB blend source term */
758 GLenum DstRGB
; /**< RGB blend dest term */
759 GLenum SrcA
; /**< Alpha blend source term */
760 GLenum DstA
; /**< Alpha blend dest term */
761 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
762 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
763 } Blend
[MAX_DRAW_BUFFERS
];
764 /** Are the blend func terms currently different for each buffer/target? */
765 GLboolean _BlendFuncPerBuffer
;
766 /** Are the blend equations currently different for each buffer/target? */
767 GLboolean _BlendEquationPerBuffer
;
774 GLenum LogicOp
; /**< Logic operator */
775 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
776 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
777 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
780 GLboolean DitherFlag
; /**< Dither enable flag */
782 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
783 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
784 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
785 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
787 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
792 * Current attribute group (GL_CURRENT_BIT).
794 struct gl_current_attrib
797 * \name Current vertex attributes.
798 * \note Values are valid only after FLUSH_VERTICES has been called.
799 * \note Index and Edgeflag current values are stored as floats in the
800 * SIX and SEVEN attribute slots.
802 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
805 * \name Current raster position attributes (always valid).
806 * \note This set of attributes is very similar to the SWvertex struct.
809 GLfloat RasterPos
[4];
810 GLfloat RasterDistance
;
811 GLfloat RasterColor
[4];
812 GLfloat RasterSecondaryColor
[4];
813 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
814 GLboolean RasterPosValid
;
820 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
822 struct gl_depthbuffer_attrib
824 GLenum Func
; /**< Function for depth buffer compare */
825 GLclampd Clear
; /**< Value to clear depth buffer to */
826 GLboolean Test
; /**< Depth buffering enabled flag */
827 GLboolean Mask
; /**< Depth buffer writable? */
828 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
829 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
834 * Evaluator attribute group (GL_EVAL_BIT).
836 struct gl_eval_attrib
842 GLboolean Map1Color4
;
844 GLboolean Map1Normal
;
845 GLboolean Map1TextureCoord1
;
846 GLboolean Map1TextureCoord2
;
847 GLboolean Map1TextureCoord3
;
848 GLboolean Map1TextureCoord4
;
849 GLboolean Map1Vertex3
;
850 GLboolean Map1Vertex4
;
851 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
852 GLboolean Map2Color4
;
854 GLboolean Map2Normal
;
855 GLboolean Map2TextureCoord1
;
856 GLboolean Map2TextureCoord2
;
857 GLboolean Map2TextureCoord3
;
858 GLboolean Map2TextureCoord4
;
859 GLboolean Map2Vertex3
;
860 GLboolean Map2Vertex4
;
861 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
862 GLboolean AutoNormal
;
866 * \name Map Grid endpoints and divisions and calculated du values
870 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
871 GLint MapGrid2un
, MapGrid2vn
;
872 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
873 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
879 * Fog attribute group (GL_FOG_BIT).
883 GLboolean Enabled
; /**< Fog enabled flag */
884 GLfloat ColorUnclamped
[4]; /**< Fog color */
885 GLfloat Color
[4]; /**< Fog color */
886 GLfloat Density
; /**< Density >= 0.0 */
887 GLfloat Start
; /**< Start distance in eye coords */
888 GLfloat End
; /**< End distance in eye coords */
889 GLfloat Index
; /**< Fog index */
890 GLenum Mode
; /**< Fog mode */
891 GLboolean ColorSumEnabled
;
892 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
893 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
898 * \brief Layout qualifiers for gl_FragDepth.
900 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
901 * a layout qualifier.
903 * \see enum ir_depth_layout
905 enum gl_frag_depth_layout
{
906 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
907 FRAG_DEPTH_LAYOUT_ANY
,
908 FRAG_DEPTH_LAYOUT_GREATER
,
909 FRAG_DEPTH_LAYOUT_LESS
,
910 FRAG_DEPTH_LAYOUT_UNCHANGED
915 * Hint attribute group (GL_HINT_BIT).
917 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
919 struct gl_hint_attrib
921 GLenum PerspectiveCorrection
;
924 GLenum PolygonSmooth
;
926 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
927 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
928 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
929 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
936 #define LIGHT_SPOT 0x1
937 #define LIGHT_LOCAL_VIEWER 0x2
938 #define LIGHT_POSITIONAL 0x4
939 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
944 * Lighting attribute group (GL_LIGHT_BIT).
946 struct gl_light_attrib
948 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
949 struct gl_lightmodel Model
; /**< Lighting model */
952 * Must flush FLUSH_VERTICES before referencing:
955 struct gl_material Material
; /**< Includes front & back values */
958 GLboolean Enabled
; /**< Lighting enabled flag */
959 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
960 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
961 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
962 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
963 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
964 GLboolean ColorMaterialEnabled
;
965 GLenum ClampVertexColor
;
966 GLboolean _ClampVertexColor
;
968 struct gl_light EnabledList
; /**< List sentinel */
971 * Derived state for optimizations:
974 GLboolean _NeedEyeCoords
;
975 GLboolean _NeedVertices
; /**< Use fast shader? */
976 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
977 GLfloat _BaseColor
[2][3];
983 * Line attribute group (GL_LINE_BIT).
985 struct gl_line_attrib
987 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
988 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
989 GLushort StipplePattern
; /**< Stipple pattern */
990 GLint StippleFactor
; /**< Stipple repeat factor */
991 GLfloat Width
; /**< Line width */
996 * Display list attribute group (GL_LIST_BIT).
998 struct gl_list_attrib
1005 * Multisample attribute group (GL_MULTISAMPLE_BIT).
1007 struct gl_multisample_attrib
1010 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
1011 GLboolean SampleAlphaToCoverage
;
1012 GLboolean SampleAlphaToOne
;
1013 GLboolean SampleCoverage
;
1014 GLfloat SampleCoverageValue
;
1015 GLboolean SampleCoverageInvert
;
1020 * A pixelmap (see glPixelMap)
1025 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1026 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1031 * Collection of all pixelmaps
1035 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1036 struct gl_pixelmap GtoG
;
1037 struct gl_pixelmap BtoB
;
1038 struct gl_pixelmap AtoA
;
1039 struct gl_pixelmap ItoR
;
1040 struct gl_pixelmap ItoG
;
1041 struct gl_pixelmap ItoB
;
1042 struct gl_pixelmap ItoA
;
1043 struct gl_pixelmap ItoI
;
1044 struct gl_pixelmap StoS
;
1049 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1051 struct gl_pixel_attrib
1053 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1055 /*--- Begin Pixel Transfer State ---*/
1056 /* Fields are in the order in which they're applied... */
1058 /** Scale & Bias (index shift, offset) */
1060 GLfloat RedBias
, RedScale
;
1061 GLfloat GreenBias
, GreenScale
;
1062 GLfloat BlueBias
, BlueScale
;
1063 GLfloat AlphaBias
, AlphaScale
;
1064 GLfloat DepthBias
, DepthScale
;
1065 GLint IndexShift
, IndexOffset
;
1069 /* Note: actual pixel maps are not part of this attrib group */
1070 GLboolean MapColorFlag
;
1071 GLboolean MapStencilFlag
;
1073 /*--- End Pixel Transfer State ---*/
1076 GLfloat ZoomX
, ZoomY
;
1081 * Point attribute group (GL_POINT_BIT).
1083 struct gl_point_attrib
1085 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1086 GLfloat Size
; /**< User-specified point size */
1087 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1088 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1089 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1090 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1091 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1092 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1093 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1094 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1099 * Polygon attribute group (GL_POLYGON_BIT).
1101 struct gl_polygon_attrib
1103 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1104 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1105 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1106 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1107 GLboolean CullFlag
; /**< Culling on/off flag */
1108 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1109 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1110 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1111 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1112 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1113 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1114 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1115 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1120 * Scissor attributes (GL_SCISSOR_BIT).
1122 struct gl_scissor_attrib
1124 GLboolean Enabled
; /**< Scissor test enabled? */
1125 GLint X
, Y
; /**< Lower left corner of box */
1126 GLsizei Width
, Height
; /**< Size of box */
1131 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1133 * Three sets of stencil data are tracked so that OpenGL 2.0,
1134 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1135 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1136 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1137 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1138 * GL_EXT_stencil_two_side GL_BACK state.
1140 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1141 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1143 * The derived value \c _TestTwoSide is set when the front-face and back-face
1144 * stencil state are different.
1146 struct gl_stencil_attrib
1148 GLboolean Enabled
; /**< Enabled flag */
1149 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1150 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1151 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1152 GLboolean _TestTwoSide
;
1153 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1154 GLenum Function
[3]; /**< Stencil function */
1155 GLenum FailFunc
[3]; /**< Fail function */
1156 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1157 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1158 GLint Ref
[3]; /**< Reference value */
1159 GLuint ValueMask
[3]; /**< Value mask */
1160 GLuint WriteMask
[3]; /**< Write mask */
1161 GLuint Clear
; /**< Clear value */
1166 * An index for each type of texture object. These correspond to the GL
1167 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1168 * Note: the order is from highest priority to lowest priority.
1172 TEXTURE_BUFFER_INDEX
,
1173 TEXTURE_2D_ARRAY_INDEX
,
1174 TEXTURE_1D_ARRAY_INDEX
,
1185 * Bit flags for each type of texture object
1186 * Used for Texture.Unit[]._ReallyEnabled flags.
1189 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1190 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1191 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1192 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1193 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1194 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1195 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1196 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1201 * TexGenEnabled flags.
1208 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1213 * Bit flag versions of the corresponding GL_ constants.
1216 #define TEXGEN_SPHERE_MAP 0x1
1217 #define TEXGEN_OBJ_LINEAR 0x2
1218 #define TEXGEN_EYE_LINEAR 0x4
1219 #define TEXGEN_REFLECTION_MAP_NV 0x8
1220 #define TEXGEN_NORMAL_MAP_NV 0x10
1222 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1223 TEXGEN_REFLECTION_MAP_NV | \
1224 TEXGEN_NORMAL_MAP_NV)
1225 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1226 TEXGEN_REFLECTION_MAP_NV | \
1227 TEXGEN_NORMAL_MAP_NV | \
1233 /** Tex-gen enabled for texture unit? */
1234 #define ENABLE_TEXGEN(unit) (1 << (unit))
1236 /** Non-identity texture matrix for texture unit? */
1237 #define ENABLE_TEXMAT(unit) (1 << (unit))
1241 * Texel fetch function prototype. We use texel fetch functions to
1242 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1243 * texture images. These functions help to isolate us from the gritty
1244 * details of all the various texture image encodings.
1246 * \param texImage texture image.
1247 * \param col texel column.
1248 * \param row texel row.
1249 * \param img texel image level/layer.
1250 * \param texelOut output texel (up to 4 GLchans)
1252 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1253 GLint col
, GLint row
, GLint img
,
1257 * As above, but returns floats.
1258 * Used for depth component images and for upcoming signed/float
1261 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1262 GLint col
, GLint row
, GLint img
,
1263 GLfloat
*texelOut
);
1266 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1267 GLint col
, GLint row
, GLint img
,
1272 * Texture image state. Describes the dimensions of a texture image,
1273 * the texel format and pointers to Texel Fetch functions.
1275 struct gl_texture_image
1277 GLint InternalFormat
; /**< Internal format as given by the user */
1278 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1279 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1280 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1281 * GL_DEPTH_STENCIL_EXT only. Used for
1282 * choosing TexEnv arithmetic.
1284 gl_format TexFormat
; /**< The actual texture memory format */
1286 GLuint Border
; /**< 0 or 1 */
1287 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1288 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1289 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1290 GLuint Width2
; /**< = Width - 2*Border */
1291 GLuint Height2
; /**< = Height - 2*Border */
1292 GLuint Depth2
; /**< = Depth - 2*Border */
1293 GLuint WidthLog2
; /**< = log2(Width2) */
1294 GLuint HeightLog2
; /**< = log2(Height2) */
1295 GLuint DepthLog2
; /**< = log2(Depth2) */
1296 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1297 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1298 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1299 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1300 GLboolean IsClientData
; /**< Data owned by client? */
1301 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1303 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1304 GLuint Level
; /**< Which mipmap level am I? */
1305 /** Cube map face: index into gl_texture_object::Image[] array */
1308 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1309 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1311 GLuint RowStride
; /**< Padded width in units of texels */
1312 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1313 each 2D slice in 'Data', in texels */
1314 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1317 * \name For device driver:
1320 void *DriverData
; /**< Arbitrary device driver data */
1326 * Indexes for cube map faces.
1341 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1342 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1344 struct gl_sampler_object
1349 GLenum WrapS
; /**< S-axis texture image wrap mode */
1350 GLenum WrapT
; /**< T-axis texture image wrap mode */
1351 GLenum WrapR
; /**< R-axis texture image wrap mode */
1352 GLenum MinFilter
; /**< minification filter */
1353 GLenum MagFilter
; /**< magnification filter */
1358 } BorderColor
; /**< Interpreted according to texture format */
1359 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1360 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1361 GLfloat LodBias
; /**< OpenGL 1.4 */
1362 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1363 GLenum CompareMode
; /**< GL_ARB_shadow */
1364 GLenum CompareFunc
; /**< GL_ARB_shadow */
1365 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1366 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1367 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1369 /* deprecated sampler state */
1370 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1372 /** Is the texture object complete with respect to this sampler? */
1373 GLboolean _CompleteTexture
;
1378 * Texture object state. Contains the array of mipmap images, border color,
1379 * wrap modes, filter modes, and shadow/texcompare state.
1381 struct gl_texture_object
1383 _glthread_Mutex Mutex
; /**< for thread safety */
1384 GLint RefCount
; /**< reference count */
1385 GLuint Name
; /**< the user-visible texture object ID */
1386 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1388 struct gl_sampler_object Sampler
;
1390 GLfloat Priority
; /**< in [0,1] */
1391 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1392 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1393 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1394 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1395 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1396 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1397 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1398 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1399 GLboolean _Complete
; /**< Is texture object complete? */
1400 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1401 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1403 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1404 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1406 /** GL_ARB_texture_buffer_object */
1407 struct gl_buffer_object
*BufferObject
;
1408 GLenum BufferObjectFormat
;
1411 * \name For device driver.
1412 * Note: instead of attaching driver data to this pointer, it's preferable
1413 * to instead use this struct as a base class for your own texture object
1414 * class. Driver->NewTextureObject() can be used to implement the
1417 void *DriverData
; /**< Arbitrary device driver data */
1421 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1422 #define MAX_COMBINER_TERMS 4
1426 * Texture combine environment state.
1428 struct gl_tex_env_combine_state
1430 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1431 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1432 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1433 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1434 GLenum SourceA
[MAX_COMBINER_TERMS
];
1435 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1436 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1437 GLenum OperandA
[MAX_COMBINER_TERMS
];
1438 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1439 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1440 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1441 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1446 * Texture coord generation state.
1450 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1451 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1452 GLfloat ObjectPlane
[4];
1453 GLfloat EyePlane
[4];
1458 * Texture unit state. Contains enable flags, texture environment/function/
1459 * combiners, texgen state, and pointers to current texture objects.
1461 struct gl_texture_unit
1463 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1464 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1466 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1467 GLclampf EnvColor
[4];
1468 GLfloat EnvColorUnclamped
[4];
1470 struct gl_texgen GenS
;
1471 struct gl_texgen GenT
;
1472 struct gl_texgen GenR
;
1473 struct gl_texgen GenQ
;
1474 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1475 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1477 GLfloat LodBias
; /**< for biasing mipmap levels */
1479 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1481 /** Current sampler object (GL_ARB_sampler_objects) */
1482 struct gl_sampler_object
*Sampler
;
1485 * \name GL_EXT_texture_env_combine
1487 struct gl_tex_env_combine_state Combine
;
1490 * Derived state based on \c EnvMode and the \c BaseFormat of the
1491 * currently enabled texture.
1493 struct gl_tex_env_combine_state _EnvMode
;
1496 * Currently enabled combiner state. This will point to either
1497 * \c Combine or \c _EnvMode.
1499 struct gl_tex_env_combine_state
*_CurrentCombine
;
1501 /** Current texture object pointers */
1502 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1504 /** Points to highest priority, complete and enabled texture object */
1505 struct gl_texture_object
*_Current
;
1510 * Texture attribute group (GL_TEXTURE_BIT).
1512 struct gl_texture_attrib
1514 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1515 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1517 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1519 /** GL_ARB_texture_buffer_object */
1520 struct gl_buffer_object
*BufferObject
;
1522 /** GL_ARB_seamless_cubemap */
1523 GLboolean CubeMapSeamless
;
1525 /** Texture units/samplers used by vertex or fragment texturing */
1526 GLbitfield _EnabledUnits
;
1528 /** Texture coord units/sets used for fragment texturing */
1529 GLbitfield _EnabledCoordUnits
;
1531 /** Texture coord units that have texgen enabled */
1532 GLbitfield _TexGenEnabled
;
1534 /** Texture coord units that have non-identity matrices */
1535 GLbitfield _TexMatEnabled
;
1537 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1538 GLbitfield _GenFlags
;
1543 * Transformation attribute group (GL_TRANSFORM_BIT).
1545 struct gl_transform_attrib
1547 GLenum MatrixMode
; /**< Matrix mode */
1548 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1549 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1550 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1551 GLboolean Normalize
; /**< Normalize all normals? */
1552 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1553 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1554 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1556 GLfloat CullEyePos
[4];
1557 GLfloat CullObjPos
[4];
1562 * Viewport attribute group (GL_VIEWPORT_BIT).
1564 struct gl_viewport_attrib
1566 GLint X
, Y
; /**< position */
1567 GLsizei Width
, Height
; /**< size */
1568 GLfloat Near
, Far
; /**< Depth buffer range */
1569 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1574 * GL_ARB_vertex/pixel_buffer_object buffer object
1576 struct gl_buffer_object
1578 _glthread_Mutex Mutex
;
1581 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1582 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1583 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1584 /** Fields describing a mapped buffer */
1586 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1587 GLvoid
*Pointer
; /**< User-space address of mapping */
1588 GLintptr Offset
; /**< Mapped offset */
1589 GLsizeiptr Length
; /**< Mapped length */
1591 GLboolean Written
; /**< Ever written to? (for debugging) */
1592 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1597 * Client pixel packing/unpacking attributes
1599 struct gl_pixelstore_attrib
1607 GLboolean SwapBytes
;
1609 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1610 GLboolean Invert
; /**< GL_MESA_pack_invert */
1611 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1616 * Client vertex array attributes
1618 struct gl_client_array
1620 GLint Size
; /**< components per element (1,2,3,4) */
1621 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1622 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1623 GLsizei Stride
; /**< user-specified stride */
1624 GLsizei StrideB
; /**< actual stride in bytes */
1625 const GLubyte
*Ptr
; /**< Points to array data */
1626 GLboolean Enabled
; /**< Enabled flag is a boolean */
1627 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1628 GLboolean Integer
; /**< Integer-valued? */
1629 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1630 GLuint _ElementSize
; /**< size of each element in bytes */
1632 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1633 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1638 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1639 * extension, but a nice encapsulation in any case.
1641 struct gl_array_object
1643 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1647 _glthread_Mutex Mutex
;
1648 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1650 /** Conventional vertex arrays */
1652 struct gl_client_array Vertex
;
1653 struct gl_client_array Weight
;
1654 struct gl_client_array Normal
;
1655 struct gl_client_array Color
;
1656 struct gl_client_array SecondaryColor
;
1657 struct gl_client_array FogCoord
;
1658 struct gl_client_array Index
;
1659 struct gl_client_array EdgeFlag
;
1660 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1661 struct gl_client_array PointSize
;
1665 * Generic arrays for vertex programs/shaders.
1666 * For NV vertex programs, these attributes alias and take priority
1667 * over the conventional attribs above. For ARB vertex programs and
1668 * GLSL vertex shaders, these attributes are separate.
1670 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1672 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1673 GLbitfield _Enabled
;
1676 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1677 * we can determine the max legal (in bounds) glDrawElements array index.
1684 * Vertex array state
1686 struct gl_array_attrib
1688 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1689 struct gl_array_object
*ArrayObj
;
1691 /** The default vertex array object */
1692 struct gl_array_object
*DefaultArrayObj
;
1694 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1695 struct _mesa_HashTable
*Objects
;
1697 GLint ActiveTexture
; /**< Client Active Texture */
1698 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1699 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1701 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1702 GLboolean PrimitiveRestart
;
1703 GLuint RestartIndex
;
1705 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1706 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1708 /* GL_ARB_vertex_buffer_object */
1709 struct gl_buffer_object
*ArrayBufferObj
;
1710 struct gl_buffer_object
*ElementArrayBufferObj
;
1715 * Feedback buffer state
1720 GLbitfield _Mask
; /**< FB_* bits */
1728 * Selection buffer state
1732 GLuint
*Buffer
; /**< selection buffer */
1733 GLuint BufferSize
; /**< size of the selection buffer */
1734 GLuint BufferCount
; /**< number of values in the selection buffer */
1735 GLuint Hits
; /**< number of records in the selection buffer */
1736 GLuint NameStackDepth
; /**< name stack depth */
1737 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1738 GLboolean HitFlag
; /**< hit flag */
1739 GLfloat HitMinZ
; /**< minimum hit depth */
1740 GLfloat HitMaxZ
; /**< maximum hit depth */
1745 * 1-D Evaluator control points
1749 GLuint Order
; /**< Number of control points */
1750 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1751 GLfloat
*Points
; /**< Points to contiguous control points */
1756 * 2-D Evaluator control points
1760 GLuint Uorder
; /**< Number of control points in U dimension */
1761 GLuint Vorder
; /**< Number of control points in V dimension */
1764 GLfloat
*Points
; /**< Points to contiguous control points */
1769 * All evaluator control point state
1771 struct gl_evaluators
1777 struct gl_1d_map Map1Vertex3
;
1778 struct gl_1d_map Map1Vertex4
;
1779 struct gl_1d_map Map1Index
;
1780 struct gl_1d_map Map1Color4
;
1781 struct gl_1d_map Map1Normal
;
1782 struct gl_1d_map Map1Texture1
;
1783 struct gl_1d_map Map1Texture2
;
1784 struct gl_1d_map Map1Texture3
;
1785 struct gl_1d_map Map1Texture4
;
1786 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1793 struct gl_2d_map Map2Vertex3
;
1794 struct gl_2d_map Map2Vertex4
;
1795 struct gl_2d_map Map2Index
;
1796 struct gl_2d_map Map2Color4
;
1797 struct gl_2d_map Map2Normal
;
1798 struct gl_2d_map Map2Texture1
;
1799 struct gl_2d_map Map2Texture2
;
1800 struct gl_2d_map Map2Texture3
;
1801 struct gl_2d_map Map2Texture4
;
1802 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1808 * Names of the various vertex/fragment program register files, etc.
1810 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1811 * All values should fit in a 4-bit field.
1813 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1814 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1815 * be "uniform" variables since they can only be set outside glBegin/End.
1816 * They're also all stored in the same Parameters array.
1820 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1821 PROGRAM_INPUT
, /**< machine->Inputs[] */
1822 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1823 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1824 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1825 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1826 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1827 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1828 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1829 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1830 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1831 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1832 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1833 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1834 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1840 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1841 * one of these values.
1845 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1846 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1847 SYSTEM_VALUE_MAX
/**< Number of values */
1851 /** Vertex and fragment instructions */
1852 struct prog_instruction
;
1853 struct gl_program_parameter_list
;
1854 struct gl_uniform_list
;
1858 * Base class for any kind of program object
1863 GLubyte
*String
; /**< Null-terminated program text */
1865 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1866 GLenum Format
; /**< String encoding format */
1869 struct prog_instruction
*Instructions
;
1871 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1872 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1873 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1874 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1875 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1876 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1877 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1878 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1881 /** Named parameters, constants, etc. from program text */
1882 struct gl_program_parameter_list
*Parameters
;
1883 /** Numbered local parameters */
1884 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1886 /** Vertex/fragment shader varying vars */
1887 struct gl_program_parameter_list
*Varying
;
1888 /** Vertex program user-defined attributes */
1889 struct gl_program_parameter_list
*Attributes
;
1891 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1892 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1893 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1894 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1896 /** Bitmask of which register files are read/written with indirect
1897 * addressing. Mask of (1 << PROGRAM_x) bits.
1899 GLbitfield IndirectRegisterFiles
;
1901 /** Logical counts */
1903 GLuint NumInstructions
;
1904 GLuint NumTemporaries
;
1905 GLuint NumParameters
;
1906 GLuint NumAttributes
;
1907 GLuint NumAddressRegs
;
1908 GLuint NumAluInstructions
;
1909 GLuint NumTexInstructions
;
1910 GLuint NumTexIndirections
;
1912 /** Native, actual h/w counts */
1914 GLuint NumNativeInstructions
;
1915 GLuint NumNativeTemporaries
;
1916 GLuint NumNativeParameters
;
1917 GLuint NumNativeAttributes
;
1918 GLuint NumNativeAddressRegs
;
1919 GLuint NumNativeAluInstructions
;
1920 GLuint NumNativeTexInstructions
;
1921 GLuint NumNativeTexIndirections
;
1926 /** Vertex program object */
1927 struct gl_vertex_program
1929 struct gl_program Base
; /**< base class */
1930 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1931 GLboolean IsPositionInvariant
;
1935 /** Geometry program object */
1936 struct gl_geometry_program
1938 struct gl_program Base
; /**< base class */
1941 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1942 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1943 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1947 /** Fragment program object */
1948 struct gl_fragment_program
1950 struct gl_program Base
; /**< base class */
1951 GLboolean UsesKill
; /**< shader uses KIL instruction */
1952 GLboolean OriginUpperLeft
;
1953 GLboolean PixelCenterInteger
;
1954 enum gl_frag_depth_layout FragDepthLayout
;
1959 * State common to vertex and fragment programs.
1961 struct gl_program_state
1963 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1964 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1969 * Context state for vertex programs.
1971 struct gl_vertex_program_state
1973 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1974 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1975 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1976 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1977 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1979 /** Currently enabled and valid vertex program (including internal
1980 * programs, user-defined vertex programs and GLSL vertex shaders).
1981 * This is the program we must use when rendering.
1983 struct gl_vertex_program
*_Current
;
1985 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1987 /* For GL_NV_vertex_program only: */
1988 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1989 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1991 /** Should fixed-function T&L be implemented with a vertex prog? */
1992 GLboolean _MaintainTnlProgram
;
1994 /** Program to emulate fixed-function T&L (see above) */
1995 struct gl_vertex_program
*_TnlProgram
;
1997 /** Cache of fixed-function programs */
1998 struct gl_program_cache
*Cache
;
2000 GLboolean _Overriden
;
2005 * Context state for geometry programs.
2007 struct gl_geometry_program_state
2009 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2010 GLboolean _Enabled
; /**< Enabled and valid program? */
2011 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2013 /** Currently enabled and valid program (including internal programs
2014 * and compiled shader programs).
2016 struct gl_geometry_program
*_Current
;
2018 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2020 /** Cache of fixed-function programs */
2021 struct gl_program_cache
*Cache
;
2025 * Context state for fragment programs.
2027 struct gl_fragment_program_state
2029 GLboolean Enabled
; /**< User-set fragment program enable flag */
2030 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2031 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2033 /** Currently enabled and valid fragment program (including internal
2034 * programs, user-defined fragment programs and GLSL fragment shaders).
2035 * This is the program we must use when rendering.
2037 struct gl_fragment_program
*_Current
;
2039 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2041 /** Should fixed-function texturing be implemented with a fragment prog? */
2042 GLboolean _MaintainTexEnvProgram
;
2044 /** Program to emulate fixed-function texture env/combine (see above) */
2045 struct gl_fragment_program
*_TexEnvProgram
;
2047 /** Cache of fixed-function programs */
2048 struct gl_program_cache
*Cache
;
2053 * ATI_fragment_shader runtime state
2055 #define ATI_FS_INPUT_PRIMARY 0
2056 #define ATI_FS_INPUT_SECONDARY 1
2058 struct atifs_instruction
;
2059 struct atifs_setupinst
;
2062 * ATI fragment shader
2064 struct ati_fragment_shader
2068 struct atifs_instruction
*Instructions
[2];
2069 struct atifs_setupinst
*SetupInst
[2];
2070 GLfloat Constants
[8][4];
2071 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2072 GLubyte numArithInstr
[2];
2073 GLubyte regsAssigned
[2];
2074 GLubyte NumPasses
; /**< 1 or 2 */
2076 GLubyte last_optype
;
2077 GLboolean interpinp1
;
2083 * Context state for GL_ATI_fragment_shader
2085 struct gl_ati_fragment_shader_state
2088 GLboolean _Enabled
; /**< enabled and valid shader? */
2089 GLboolean Compiling
;
2090 GLfloat GlobalConstants
[8][4];
2091 struct ati_fragment_shader
*Current
;
2096 * Occlusion/timer query object.
2098 struct gl_query_object
2100 GLenum Target
; /**< The query target, when active */
2101 GLuint Id
; /**< hash table ID/name */
2102 GLuint64EXT Result
; /**< the counter */
2103 GLboolean Active
; /**< inside Begin/EndQuery */
2104 GLboolean Ready
; /**< result is ready? */
2109 * Context state for query objects.
2111 struct gl_query_state
2113 struct _mesa_HashTable
*QueryObjects
;
2114 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2115 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2117 /** GL_NV_conditional_render */
2118 struct gl_query_object
*CondRenderQuery
;
2120 /** GL_EXT_transform_feedback */
2121 struct gl_query_object
*PrimitivesGenerated
;
2122 struct gl_query_object
*PrimitivesWritten
;
2124 /** GL_ARB_timer_query */
2125 struct gl_query_object
*TimeElapsed
;
2127 GLenum CondRenderMode
;
2131 /** Sync object state */
2132 struct gl_sync_object
{
2133 struct simple_node link
;
2134 GLenum Type
; /**< GL_SYNC_FENCE */
2135 GLuint Name
; /**< Fence name */
2136 GLint RefCount
; /**< Reference count */
2137 GLboolean DeletePending
; /**< Object was deleted while there were still
2138 * live references (e.g., sync not yet finished)
2140 GLenum SyncCondition
;
2141 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2142 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2146 /** Set by #pragma directives */
2147 struct gl_sl_pragmas
2149 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2150 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2151 GLboolean Optimize
; /**< defaults on */
2152 GLboolean Debug
; /**< defaults off */
2157 * A GLSL vertex or fragment shader object.
2161 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2162 GLuint Name
; /**< AKA the handle */
2163 GLint RefCount
; /**< Reference count */
2164 GLboolean DeletePending
;
2165 GLboolean CompileStatus
;
2166 const GLchar
*Source
; /**< Source code string */
2167 GLuint SourceChecksum
; /**< for debug/logging purposes */
2168 struct gl_program
*Program
; /**< Post-compile assembly code */
2170 struct gl_sl_pragmas Pragmas
;
2172 unsigned Version
; /**< GLSL version used for linking */
2174 struct exec_list
*ir
;
2175 struct glsl_symbol_table
*symbols
;
2177 /** Shaders containing built-in functions that are used for linking. */
2178 struct gl_shader
*builtins_to_link
[16];
2179 unsigned num_builtins_to_link
;
2184 * A GLSL program object.
2185 * Basically a linked collection of vertex and fragment shaders.
2187 struct gl_shader_program
2189 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2190 GLuint Name
; /**< aka handle or ID */
2191 GLint RefCount
; /**< Reference count */
2192 GLboolean DeletePending
;
2194 GLuint NumShaders
; /**< number of attached shaders */
2195 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2197 /** User-defined attribute bindings (glBindAttribLocation) */
2198 struct gl_program_parameter_list
*Attributes
;
2200 /** Transform feedback varyings */
2204 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2205 } TransformFeedback
;
2207 /** Geometry shader state - copied into gl_geometry_program at link time */
2210 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2211 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2212 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2215 /* post-link info: */
2216 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2217 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2218 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2219 struct gl_uniform_list
*Uniforms
;
2220 struct gl_program_parameter_list
*Varying
;
2221 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2222 GLboolean Validated
;
2223 GLboolean _Used
; /**< Ever used for drawing? */
2226 unsigned Version
; /**< GLSL version used for linking */
2229 * Per-stage shaders resulting from the first stage of linking.
2231 * Set of linked shaders for this program. The array is accessed using the
2232 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2235 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2239 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2240 #define GLSL_LOG 0x2 /**< Write shaders to files */
2241 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2242 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2243 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2244 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2245 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2246 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2250 * Context state for GLSL vertex/fragment shaders.
2252 struct gl_shader_state
2255 * Programs used for rendering
2257 * There is a separate program set for each shader stage. If
2258 * GL_EXT_separate_shader_objects is not supported, each of these must point
2259 * to \c NULL or to the same program.
2261 struct gl_shader_program
*CurrentVertexProgram
;
2262 struct gl_shader_program
*CurrentGeometryProgram
;
2263 struct gl_shader_program
*CurrentFragmentProgram
;
2266 * Program used by glUniform calls.
2268 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2270 struct gl_shader_program
*ActiveProgram
;
2272 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2276 * Compiler options for a single GLSL shaders type
2278 struct gl_shader_compiler_options
2280 /** Driver-selectable options: */
2281 GLboolean EmitCondCodes
; /**< Use condition codes? */
2282 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2283 GLboolean EmitNoLoops
;
2284 GLboolean EmitNoFunctions
;
2285 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2286 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2287 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2288 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2291 * \name Forms of indirect addressing the driver cannot do.
2294 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2295 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2296 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2297 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2300 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2301 GLuint MaxUnrollIterations
;
2303 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2307 * Transform feedback object state
2309 struct gl_transform_feedback_object
2311 GLuint Name
; /**< AKA the object ID */
2313 GLboolean Active
; /**< Is transform feedback enabled? */
2314 GLboolean Paused
; /**< Is transform feedback paused? */
2316 /** The feedback buffers */
2317 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2318 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2320 /** Start of feedback data in dest buffer */
2321 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2322 /** Max data to put into dest buffer (in bytes) */
2323 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2328 * Context state for transform feedback.
2330 struct gl_transform_feedback
2332 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2334 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2336 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2337 struct gl_buffer_object
*CurrentBuffer
;
2339 /** The table of all transform feedback objects */
2340 struct _mesa_HashTable
*Objects
;
2342 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2343 struct gl_transform_feedback_object
*CurrentObject
;
2345 /** The default xform-fb object (Name==0) */
2346 struct gl_transform_feedback_object
*DefaultObject
;
2352 * State which can be shared by multiple contexts:
2354 struct gl_shared_state
2356 _glthread_Mutex Mutex
; /**< for thread safety */
2357 GLint RefCount
; /**< Reference count */
2358 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2359 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2361 /** Default texture objects (shared by all texture units) */
2362 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2364 /** Fallback texture used when a bound texture is incomplete */
2365 struct gl_texture_object
*FallbackTex
;
2368 * \name Thread safety and statechange notification for texture
2371 * \todo Improve the granularity of locking.
2374 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2375 GLuint TextureStateStamp
; /**< state notification for shared tex */
2378 /** Default buffer object for vertex arrays that aren't in VBOs */
2379 struct gl_buffer_object
*NullBufferObj
;
2382 * \name Vertex/geometry/fragment programs
2385 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2386 struct gl_vertex_program
*DefaultVertexProgram
;
2387 struct gl_fragment_program
*DefaultFragmentProgram
;
2388 struct gl_geometry_program
*DefaultGeometryProgram
;
2391 /* GL_ATI_fragment_shader */
2392 struct _mesa_HashTable
*ATIShaders
;
2393 struct ati_fragment_shader
*DefaultFragmentShader
;
2395 struct _mesa_HashTable
*BufferObjects
;
2397 /** Table of both gl_shader and gl_shader_program objects */
2398 struct _mesa_HashTable
*ShaderObjects
;
2400 /* GL_EXT_framebuffer_object */
2401 struct _mesa_HashTable
*RenderBuffers
;
2402 struct _mesa_HashTable
*FrameBuffers
;
2405 struct simple_node SyncObjects
;
2407 /** GL_ARB_sampler_objects */
2408 struct _mesa_HashTable
*SamplerObjects
;
2410 void *DriverData
; /**< Device driver shared state */
2417 * A renderbuffer stores colors or depth values or stencil values.
2418 * A framebuffer object will have a collection of these.
2419 * Data are read/written to the buffer with a handful of Get/Put functions.
2421 * Instances of this object are allocated with the Driver's NewRenderbuffer
2422 * hook. Drivers will likely wrap this class inside a driver-specific
2423 * class to simulate inheritance.
2425 struct gl_renderbuffer
2427 _glthread_Mutex Mutex
; /**< for thread safety */
2428 GLuint ClassID
; /**< Useful for drivers */
2431 GLuint Width
, Height
;
2432 GLint RowStride
; /**< Padded width in units of pixels */
2433 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2435 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2439 GLenum InternalFormat
; /**< The user-specified format */
2440 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2441 GL_STENCIL_INDEX. */
2442 gl_format Format
; /**< The actual renderbuffer memory format */
2444 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2445 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2447 /* Used to wrap one renderbuffer around another: */
2448 struct gl_renderbuffer
*Wrapped
;
2450 /* Delete this renderbuffer */
2451 void (*Delete
)(struct gl_renderbuffer
*rb
);
2453 /* Allocate new storage for this renderbuffer */
2454 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2455 GLenum internalFormat
,
2456 GLuint width
, GLuint height
);
2458 /* Lock/Unlock are called before/after calling the Get/Put functions.
2459 * Not sure this is the right place for these yet.
2460 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2461 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2464 /* Return a pointer to the element/pixel at (x,y).
2465 * Should return NULL if the buffer memory can't be directly addressed.
2467 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2470 /* Get/Read a row of values.
2471 * The values will be of format _BaseFormat and type DataType.
2473 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2474 GLint x
, GLint y
, void *values
);
2476 /* Get/Read values at arbitrary locations.
2477 * The values will be of format _BaseFormat and type DataType.
2479 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2480 const GLint x
[], const GLint y
[], void *values
);
2482 /* Put/Write a row of values.
2483 * The values will be of format _BaseFormat and type DataType.
2485 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2486 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2488 /* Put/Write a row of RGB values. This is a special-case routine that's
2489 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2490 * a common case for glDrawPixels and some triangle routines.
2491 * The values will be of format GL_RGB and type DataType.
2493 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2494 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2497 /* Put/Write a row of identical values.
2498 * The values will be of format _BaseFormat and type DataType.
2500 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2501 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2503 /* Put/Write values at arbitrary locations.
2504 * The values will be of format _BaseFormat and type DataType.
2506 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2507 const GLint x
[], const GLint y
[], const void *values
,
2508 const GLubyte
*mask
);
2509 /* Put/Write identical values at arbitrary locations.
2510 * The values will be of format _BaseFormat and type DataType.
2512 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2513 GLuint count
, const GLint x
[], const GLint y
[],
2514 const void *value
, const GLubyte
*mask
);
2519 * A renderbuffer attachment points to either a texture object (and specifies
2520 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2522 struct gl_renderbuffer_attachment
2524 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2528 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2529 * application supplied renderbuffer object.
2531 struct gl_renderbuffer
*Renderbuffer
;
2534 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2535 * supplied texture object.
2537 struct gl_texture_object
*Texture
;
2538 GLuint TextureLevel
; /**< Attached mipmap level. */
2539 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2540 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2541 * and 2D array textures */
2546 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2547 * In C++ terms, think of this as a base class from which device drivers
2548 * will make derived classes.
2550 struct gl_framebuffer
2552 _glthread_Mutex Mutex
; /**< for thread safety */
2554 * If zero, this is a window system framebuffer. If non-zero, this
2555 * is a FBO framebuffer; note that for some devices (i.e. those with
2556 * a natural pixel coordinate system for FBOs that differs from the
2557 * OpenGL/Mesa coordinate system), this means that the viewport,
2558 * polygon face orientation, and polygon stipple will have to be inverted.
2563 GLboolean DeletePending
;
2566 * The framebuffer's visual. Immutable if this is a window system buffer.
2567 * Computed from attachments if user-made FBO.
2569 struct gl_config Visual
;
2571 GLboolean Initialized
;
2573 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2575 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2577 GLint _Xmin
, _Xmax
; /**< inclusive */
2578 GLint _Ymin
, _Ymax
; /**< exclusive */
2581 /** \name Derived Z buffer stuff */
2583 GLuint _DepthMax
; /**< Max depth buffer value */
2584 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2585 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2588 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2591 /** Integer color values */
2592 GLboolean _IntegerColor
;
2594 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2595 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2597 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2598 * attribute group and GL_PIXEL attribute group, respectively.
2600 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2601 GLenum ColorReadBuffer
;
2603 /** Computed from ColorDraw/ReadBuffer above */
2604 GLuint _NumColorDrawBuffers
;
2605 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2606 GLint _ColorReadBufferIndex
; /* -1 = None */
2607 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2608 struct gl_renderbuffer
*_ColorReadBuffer
;
2610 /** The Actual depth/stencil buffers to use. May be wrappers around the
2611 * depth/stencil buffers attached above. */
2612 struct gl_renderbuffer
*_DepthBuffer
;
2613 struct gl_renderbuffer
*_StencilBuffer
;
2615 /** Delete this framebuffer */
2616 void (*Delete
)(struct gl_framebuffer
*fb
);
2621 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2625 GLushort RangeMin
; /**< min value exponent */
2626 GLushort RangeMax
; /**< max value exponent */
2627 GLushort Precision
; /**< number of mantissa bits */
2632 * Limits for vertex, geometry and fragment programs/shaders.
2634 struct gl_program_constants
2636 /* logical limits */
2637 GLuint MaxInstructions
;
2638 GLuint MaxAluInstructions
;
2639 GLuint MaxTexInstructions
;
2640 GLuint MaxTexIndirections
;
2643 GLuint MaxAddressRegs
;
2644 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2645 GLuint MaxParameters
;
2646 GLuint MaxLocalParams
;
2647 GLuint MaxEnvParams
;
2648 /* native/hardware limits */
2649 GLuint MaxNativeInstructions
;
2650 GLuint MaxNativeAluInstructions
;
2651 GLuint MaxNativeTexInstructions
;
2652 GLuint MaxNativeTexIndirections
;
2653 GLuint MaxNativeAttribs
;
2654 GLuint MaxNativeTemps
;
2655 GLuint MaxNativeAddressRegs
;
2656 GLuint MaxNativeParameters
;
2658 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2659 /* ES 2.0 and GL_ARB_ES2_compatibility */
2660 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2661 struct gl_precision LowInt
, MediumInt
, HighInt
;
2666 * Constants which may be overridden by device driver during context creation
2667 * but are never changed after that.
2671 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2672 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2673 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2674 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2675 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2676 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2677 GLuint MaxTextureCoordUnits
;
2678 GLuint MaxTextureImageUnits
;
2679 GLuint MaxVertexTextureImageUnits
;
2680 GLuint MaxCombinedTextureImageUnits
;
2681 GLuint MaxGeometryTextureImageUnits
;
2682 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2683 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2684 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2685 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2687 GLuint MaxArrayLockSize
;
2691 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2692 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2693 GLfloat PointSizeGranularity
;
2694 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2695 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2696 GLfloat LineWidthGranularity
;
2698 GLuint MaxColorTableSize
;
2700 GLuint MaxClipPlanes
;
2702 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2703 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2705 GLuint MaxViewportWidth
, MaxViewportHeight
;
2707 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2708 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2709 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2710 GLuint MaxProgramMatrices
;
2711 GLuint MaxProgramMatrixStackDepth
;
2713 /** vertex array / buffer object bounds checking */
2714 GLboolean CheckArrayBounds
;
2716 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2718 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2719 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2720 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2722 /** Number of varying vectors between vertex and fragment shaders */
2724 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2725 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2727 /** GL_ARB_geometry_shader4 */
2728 GLuint MaxGeometryOutputVertices
;
2729 GLuint MaxGeometryTotalOutputComponents
;
2731 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2734 * Does the driver support real 32-bit integers? (Otherwise, integers are
2735 * simulated via floats.)
2737 GLboolean NativeIntegers
;
2740 * If the driver supports real 32-bit integers, what integer value should be
2741 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2743 GLuint UniformBooleanTrue
;
2745 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2746 GLbitfield SupportedBumpUnits
;
2749 * Maximum amount of time, measured in nanseconds, that the server can wait.
2751 GLuint64 MaxServerWaitTimeout
;
2753 /** GL_EXT_provoking_vertex */
2754 GLboolean QuadsFollowProvokingVertexConvention
;
2756 /** OpenGL version 3.0 */
2757 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2759 /** OpenGL version 3.2 */
2760 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2762 /** GL_EXT_transform_feedback */
2763 GLuint MaxTransformFeedbackSeparateAttribs
;
2764 GLuint MaxTransformFeedbackSeparateComponents
;
2765 GLuint MaxTransformFeedbackInterleavedComponents
;
2767 /** GL_EXT_gpu_shader4 */
2768 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2770 /* GL_EXT_framebuffer_sRGB */
2771 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2773 /* GL_ARB_robustness */
2774 GLenum ResetStrategy
;
2779 * Enable flag for each OpenGL extension. Different device drivers will
2780 * enable different extensions at runtime.
2782 struct gl_extensions
2784 GLboolean dummy
; /* don't remove this! */
2785 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2786 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2787 GLboolean ARB_ES2_compatibility
;
2788 GLboolean ARB_blend_func_extended
;
2789 GLboolean ARB_color_buffer_float
;
2790 GLboolean ARB_copy_buffer
;
2791 GLboolean ARB_depth_buffer_float
;
2792 GLboolean ARB_depth_clamp
;
2793 GLboolean ARB_depth_texture
;
2794 GLboolean ARB_draw_buffers
;
2795 GLboolean ARB_draw_buffers_blend
;
2796 GLboolean ARB_draw_elements_base_vertex
;
2797 GLboolean ARB_draw_instanced
;
2798 GLboolean ARB_fragment_coord_conventions
;
2799 GLboolean ARB_fragment_program
;
2800 GLboolean ARB_fragment_program_shadow
;
2801 GLboolean ARB_fragment_shader
;
2802 GLboolean ARB_framebuffer_object
;
2803 GLboolean ARB_explicit_attrib_location
;
2804 GLboolean ARB_geometry_shader4
;
2805 GLboolean ARB_half_float_pixel
;
2806 GLboolean ARB_half_float_vertex
;
2807 GLboolean ARB_instanced_arrays
;
2808 GLboolean ARB_map_buffer_range
;
2809 GLboolean ARB_multisample
;
2810 GLboolean ARB_multitexture
;
2811 GLboolean ARB_occlusion_query
;
2812 GLboolean ARB_occlusion_query2
;
2813 GLboolean ARB_point_sprite
;
2814 GLboolean ARB_sampler_objects
;
2815 GLboolean ARB_seamless_cube_map
;
2816 GLboolean ARB_shader_objects
;
2817 GLboolean ARB_shader_stencil_export
;
2818 GLboolean ARB_shader_texture_lod
;
2819 GLboolean ARB_shading_language_100
;
2820 GLboolean ARB_shadow
;
2821 GLboolean ARB_shadow_ambient
;
2823 GLboolean ARB_texture_border_clamp
;
2824 GLboolean ARB_texture_buffer_object
;
2825 GLboolean ARB_texture_compression
;
2826 GLboolean ARB_texture_compression_rgtc
;
2827 GLboolean ARB_texture_cube_map
;
2828 GLboolean ARB_texture_env_combine
;
2829 GLboolean ARB_texture_env_crossbar
;
2830 GLboolean ARB_texture_env_dot3
;
2831 GLboolean ARB_texture_float
;
2832 GLboolean ARB_texture_mirrored_repeat
;
2833 GLboolean ARB_texture_multisample
;
2834 GLboolean ARB_texture_non_power_of_two
;
2835 GLboolean ARB_texture_rg
;
2836 GLboolean ARB_texture_rgb10_a2ui
;
2837 GLboolean ARB_timer_query
;
2838 GLboolean ARB_transform_feedback2
;
2839 GLboolean ARB_transpose_matrix
;
2840 GLboolean ARB_uniform_buffer_object
;
2841 GLboolean ARB_vertex_array_object
;
2842 GLboolean ARB_vertex_buffer_object
;
2843 GLboolean ARB_vertex_program
;
2844 GLboolean ARB_vertex_shader
;
2845 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2846 GLboolean ARB_window_pos
;
2849 GLboolean EXT_blend_color
;
2850 GLboolean EXT_blend_equation_separate
;
2851 GLboolean EXT_blend_func_separate
;
2852 GLboolean EXT_blend_logic_op
;
2853 GLboolean EXT_blend_minmax
;
2854 GLboolean EXT_blend_subtract
;
2855 GLboolean EXT_clip_volume_hint
;
2856 GLboolean EXT_compiled_vertex_array
;
2857 GLboolean EXT_copy_texture
;
2858 GLboolean EXT_depth_bounds_test
;
2859 GLboolean EXT_draw_buffers2
;
2860 GLboolean EXT_draw_range_elements
;
2861 GLboolean EXT_fog_coord
;
2862 GLboolean EXT_framebuffer_blit
;
2863 GLboolean EXT_framebuffer_multisample
;
2864 GLboolean EXT_framebuffer_object
;
2865 GLboolean EXT_framebuffer_sRGB
;
2866 GLboolean EXT_gpu_program_parameters
;
2867 GLboolean EXT_gpu_shader4
;
2868 GLboolean EXT_multi_draw_arrays
;
2869 GLboolean EXT_packed_depth_stencil
;
2870 GLboolean EXT_packed_float
;
2871 GLboolean EXT_packed_pixels
;
2872 GLboolean EXT_pixel_buffer_object
;
2873 GLboolean EXT_point_parameters
;
2874 GLboolean EXT_polygon_offset
;
2875 GLboolean EXT_provoking_vertex
;
2876 GLboolean EXT_rescale_normal
;
2877 GLboolean EXT_shadow_funcs
;
2878 GLboolean EXT_secondary_color
;
2879 GLboolean EXT_separate_shader_objects
;
2880 GLboolean EXT_separate_specular_color
;
2881 GLboolean EXT_stencil_wrap
;
2882 GLboolean EXT_stencil_two_side
;
2883 GLboolean EXT_subtexture
;
2884 GLboolean EXT_texture
;
2885 GLboolean EXT_texture_object
;
2886 GLboolean EXT_texture3D
;
2887 GLboolean EXT_texture_array
;
2888 GLboolean EXT_texture_compression_latc
;
2889 GLboolean EXT_texture_compression_s3tc
;
2890 GLboolean EXT_texture_env_add
;
2891 GLboolean EXT_texture_env_combine
;
2892 GLboolean EXT_texture_env_dot3
;
2893 GLboolean EXT_texture_filter_anisotropic
;
2894 GLboolean EXT_texture_integer
;
2895 GLboolean EXT_texture_lod_bias
;
2896 GLboolean EXT_texture_mirror_clamp
;
2897 GLboolean EXT_texture_shared_exponent
;
2898 GLboolean EXT_texture_snorm
;
2899 GLboolean EXT_texture_sRGB
;
2900 GLboolean EXT_texture_sRGB_decode
;
2901 GLboolean EXT_texture_swizzle
;
2902 GLboolean EXT_transform_feedback
;
2903 GLboolean EXT_timer_query
;
2904 GLboolean EXT_vertex_array
;
2905 GLboolean EXT_vertex_array_bgra
;
2906 GLboolean EXT_vertex_array_set
;
2907 GLboolean OES_standard_derivatives
;
2908 /* vendor extensions */
2909 GLboolean AMD_conservative_depth
;
2910 GLboolean AMD_seamless_cubemap_per_texture
;
2911 GLboolean APPLE_client_storage
;
2912 GLboolean APPLE_packed_pixels
;
2913 GLboolean APPLE_vertex_array_object
;
2914 GLboolean APPLE_object_purgeable
;
2915 GLboolean ATI_envmap_bumpmap
;
2916 GLboolean ATI_texture_compression_3dc
;
2917 GLboolean ATI_texture_mirror_once
;
2918 GLboolean ATI_texture_env_combine3
;
2919 GLboolean ATI_fragment_shader
;
2920 GLboolean ATI_separate_stencil
;
2921 GLboolean IBM_rasterpos_clip
;
2922 GLboolean IBM_multimode_draw_arrays
;
2923 GLboolean MESA_pack_invert
;
2924 GLboolean MESA_resize_buffers
;
2925 GLboolean MESA_ycbcr_texture
;
2926 GLboolean MESA_texture_array
;
2927 GLboolean NV_blend_square
;
2928 GLboolean NV_conditional_render
;
2929 GLboolean NV_fragment_program
;
2930 GLboolean NV_fragment_program_option
;
2931 GLboolean NV_light_max_exponent
;
2932 GLboolean NV_point_sprite
;
2933 GLboolean NV_primitive_restart
;
2934 GLboolean NV_texture_barrier
;
2935 GLboolean NV_texgen_reflection
;
2936 GLboolean NV_texture_env_combine4
;
2937 GLboolean NV_texture_rectangle
;
2938 GLboolean NV_vertex_program
;
2939 GLboolean NV_vertex_program1_1
;
2940 GLboolean OES_read_format
;
2941 GLboolean SGIS_generate_mipmap
;
2942 GLboolean SGIS_texture_edge_clamp
;
2943 GLboolean SGIS_texture_lod
;
2944 GLboolean TDFX_texture_compression_FXT1
;
2946 GLboolean OES_EGL_image
;
2947 GLboolean OES_draw_texture
;
2948 GLboolean EXT_texture_format_BGRA8888
;
2949 GLboolean extension_sentinel
;
2950 /** The extension string */
2951 const GLubyte
*String
;
2952 /** Number of supported extensions */
2958 * A stack of matrices (projection, modelview, color, texture, etc).
2960 struct gl_matrix_stack
2962 GLmatrix
*Top
; /**< points into Stack */
2963 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2964 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2965 GLuint MaxDepth
; /**< size of Stack[] array */
2966 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2971 * \name Bits for image transfer operations
2972 * \sa __struct gl_contextRec::ImageTransferState.
2975 #define IMAGE_SCALE_BIAS_BIT 0x1
2976 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2977 #define IMAGE_MAP_COLOR_BIT 0x4
2978 #define IMAGE_CLAMP_BIT 0x800
2981 /** Pixel Transfer ops */
2982 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2983 IMAGE_SHIFT_OFFSET_BIT | \
2984 IMAGE_MAP_COLOR_BIT)
2987 * \name Bits to indicate what state has changed.
2990 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2991 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2992 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2993 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2994 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2995 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2996 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2997 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2998 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2999 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3000 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3001 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3002 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3003 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3004 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3005 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3006 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3007 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3008 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3009 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
3010 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3011 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3012 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3013 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3014 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3015 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3016 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3017 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3018 #define _NEW_BUFFER_OBJECT (1 << 28)
3019 #define _NEW_FRAG_CLAMP (1 << 29)
3025 * \name Bits to track array state changes
3027 * Also used to summarize array enabled.
3030 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
3031 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
3032 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
3033 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
3034 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
3035 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
3036 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
3037 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
3038 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
3039 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
3040 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
3041 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
3042 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
3043 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
3044 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
3045 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
3046 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
3047 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
3048 #define _NEW_ARRAY_ALL 0xffffffff
3051 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
3052 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
3058 * \name A bunch of flags that we think might be useful to drivers.
3060 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3063 #define DD_FLATSHADE 0x1
3064 #define DD_SEPARATE_SPECULAR 0x2
3065 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3066 #define DD_TRI_LIGHT_TWOSIDE 0x8
3067 #define DD_TRI_UNFILLED 0x10
3068 #define DD_TRI_SMOOTH 0x20
3069 #define DD_TRI_STIPPLE 0x40
3070 #define DD_TRI_OFFSET 0x80
3071 #define DD_LINE_SMOOTH 0x100
3072 #define DD_LINE_STIPPLE 0x200
3073 #define DD_POINT_SMOOTH 0x400
3074 #define DD_POINT_ATTEN 0x800
3075 #define DD_TRI_TWOSTENCIL 0x1000
3080 * \name Define the state changes under which each of these bits might change
3083 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3084 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3085 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3086 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3087 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3088 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3089 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3090 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3091 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3092 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3093 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3094 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3095 #define _DD_NEW_POINT_SIZE _NEW_POINT
3096 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3101 * Composite state flags
3104 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3114 /* This has to be included here. */
3119 * Display list flags.
3120 * Strictly this is a tnl-private concept, but it doesn't seem
3121 * worthwhile adding a tnl private structure just to hold this one bit
3124 #define DLIST_DANGLING_REFS 0x1
3127 /** Opaque declaration of display list payload data type */
3128 union gl_dlist_node
;
3132 * Provide a location where information about a display list can be
3133 * collected. Could be extended with driverPrivate structures,
3134 * etc. in the future.
3136 struct gl_display_list
3139 GLbitfield Flags
; /**< DLIST_x flags */
3140 /** The dlist commands are in a linked list of nodes */
3141 union gl_dlist_node
*Head
;
3146 * State used during display list compilation and execution.
3148 struct gl_dlist_state
3150 GLuint CallDepth
; /**< Current recursion calling depth */
3152 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3153 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3154 GLuint CurrentPos
; /**< Index into current block of nodes */
3156 GLvertexformat ListVtxfmt
;
3158 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3159 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3161 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3162 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3164 GLubyte ActiveIndex
;
3165 GLfloat CurrentIndex
;
3167 GLubyte ActiveEdgeFlag
;
3168 GLboolean CurrentEdgeFlag
;
3171 /* State known to have been set by the currently-compiling display
3172 * list. Used to eliminate some redundant state changes.
3180 * Enum for the OpenGL APIs we know about and may support.
3191 * Mesa rendering context.
3193 * This is the central context data structure for Mesa. Almost all
3194 * OpenGL state is contained in this structure.
3195 * Think of this as a base class from which device drivers will derive
3198 * The struct gl_context typedef names this structure.
3202 /** State possibly shared with other contexts in the address space */
3203 struct gl_shared_state
*Shared
;
3205 /** \name API function pointer tables */
3208 struct _glapi_table
*Save
; /**< Display list save functions */
3209 struct _glapi_table
*Exec
; /**< Execute functions */
3210 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3213 struct gl_config Visual
;
3214 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3215 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3216 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3217 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3220 * Device driver function pointer table
3222 struct dd_function_table Driver
;
3224 void *DriverCtx
; /**< Points to device driver context/state */
3226 /** Core/Driver constants */
3227 struct gl_constants Const
;
3229 /** \name The various 4x4 matrix stacks */
3231 struct gl_matrix_stack ModelviewMatrixStack
;
3232 struct gl_matrix_stack ProjectionMatrixStack
;
3233 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3234 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3235 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3238 /** Combined modelview and projection matrix */
3239 GLmatrix _ModelProjectMatrix
;
3241 /** \name Display lists */
3242 struct gl_dlist_state ListState
;
3244 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3245 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3247 /** Extension information */
3248 struct gl_extensions Extensions
;
3251 GLuint VersionMajor
, VersionMinor
;
3252 char *VersionString
;
3254 /** \name State attribute stack (for glPush/PopAttrib) */
3256 GLuint AttribStackDepth
;
3257 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3260 /** \name Renderer attribute groups
3262 * We define a struct for each attribute group to make pushing and popping
3263 * attributes easy. Also it's a good organization.
3266 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3267 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3268 struct gl_current_attrib Current
; /**< Current attributes */
3269 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3270 struct gl_eval_attrib Eval
; /**< Eval attributes */
3271 struct gl_fog_attrib Fog
; /**< Fog attributes */
3272 struct gl_hint_attrib Hint
; /**< Hint attributes */
3273 struct gl_light_attrib Light
; /**< Light attributes */
3274 struct gl_line_attrib Line
; /**< Line attributes */
3275 struct gl_list_attrib List
; /**< List attributes */
3276 struct gl_multisample_attrib Multisample
;
3277 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3278 struct gl_point_attrib Point
; /**< Point attributes */
3279 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3280 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3281 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3282 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3283 struct gl_texture_attrib Texture
; /**< Texture attributes */
3284 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3285 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3288 /** \name Client attribute stack */
3290 GLuint ClientAttribStackDepth
;
3291 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3294 /** \name Client attribute groups */
3296 struct gl_array_attrib Array
; /**< Vertex arrays */
3297 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3298 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3299 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3302 /** \name Other assorted state (not pushed/popped on attribute stack) */
3304 struct gl_pixelmaps PixelMaps
;
3306 struct gl_evaluators EvalMap
; /**< All evaluators */
3307 struct gl_feedback Feedback
; /**< Feedback */
3308 struct gl_selection Select
; /**< Selection */
3310 struct gl_program_state Program
; /**< general program state */
3311 struct gl_vertex_program_state VertexProgram
;
3312 struct gl_fragment_program_state FragmentProgram
;
3313 struct gl_geometry_program_state GeometryProgram
;
3314 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3316 struct gl_shader_state Shader
; /**< GLSL shader object state */
3317 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3319 struct gl_query_state Query
; /**< occlusion, timer queries */
3321 struct gl_transform_feedback TransformFeedback
;
3323 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3324 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3327 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3329 /* GL_EXT_framebuffer_object */
3330 struct gl_renderbuffer
*CurrentRenderbuffer
;
3332 GLenum ErrorValue
; /**< Last error code */
3334 /* GL_ARB_robustness */
3338 * Recognize and silence repeated error debug messages in buggy apps.
3340 const char *ErrorDebugFmtString
;
3341 GLuint ErrorDebugCount
;
3343 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3344 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3346 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3348 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3350 /** \name Derived state */
3352 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3353 * state validation so they need to always be current.
3355 GLbitfield _TriangleCaps
;
3356 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3357 GLfloat _EyeZDir
[3];
3358 GLfloat _ModelViewInvScale
;
3359 GLboolean _NeedEyeCoords
;
3360 GLboolean _ForceEyeCoords
;
3362 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3364 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3365 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3368 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3370 /** \name For debugging/development only */
3372 GLboolean FirstTimeCurrent
;
3375 /** software compression/decompression supported or not */
3376 GLboolean Mesa_DXTn
;
3378 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3381 * Use dp4 (rather than mul/mad) instructions for position
3384 GLboolean mvp_with_dp4
;
3387 * \name Hooks for module contexts.
3389 * These will eventually live in the driver or elsewhere.
3392 void *swrast_context
;
3393 void *swsetup_context
;
3394 void *swtnl_context
;
3396 struct st_context
*st
;
3403 extern int MESA_VERBOSE
;
3404 extern int MESA_DEBUG_FLAGS
;
3405 # define MESA_FUNCTION __FUNCTION__
3407 # define MESA_VERBOSE 0
3408 # define MESA_DEBUG_FLAGS 0
3409 # define MESA_FUNCTION "a function"
3416 /** The MESA_VERBOSE var is a bitmask of these flags */
3419 VERBOSE_VARRAY
= 0x0001,
3420 VERBOSE_TEXTURE
= 0x0002,
3421 VERBOSE_MATERIAL
= 0x0004,
3422 VERBOSE_PIPELINE
= 0x0008,
3423 VERBOSE_DRIVER
= 0x0010,
3424 VERBOSE_STATE
= 0x0020,
3425 VERBOSE_API
= 0x0040,
3426 VERBOSE_DISPLAY_LIST
= 0x0100,
3427 VERBOSE_LIGHTING
= 0x0200,
3428 VERBOSE_PRIMS
= 0x0400,
3429 VERBOSE_VERTS
= 0x0800,
3430 VERBOSE_DISASSEM
= 0x1000,
3431 VERBOSE_DRAW
= 0x2000,
3432 VERBOSE_SWAPBUFFERS
= 0x4000
3436 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3439 DEBUG_ALWAYS_FLUSH
= 0x1
3444 #endif /* MTYPES_H */