i965: Remove dead brw->wrap flag.
[mesa.git] / src / mesa / drivers / dri / i965 / brw_context.h
1 /*
2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
5
6 Permission is hereby granted, free of charge, to any person obtaining
7 a copy of this software and associated documentation files (the
8 "Software"), to deal in the Software without restriction, including
9 without limitation the rights to use, copy, modify, merge, publish,
10 distribute, sublicense, and/or sell copies of the Software, and to
11 permit persons to whom the Software is furnished to do so, subject to
12 the following conditions:
13
14 The above copyright notice and this permission notice (including the
15 next paragraph) shall be included in all copies or substantial
16 portions of the Software.
17
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25
26 **********************************************************************/
27 /*
28 * Authors:
29 * Keith Whitwell <keith@tungstengraphics.com>
30 */
31
32
33 #ifndef BRWCONTEXT_INC
34 #define BRWCONTEXT_INC
35
36 #include "intel_context.h"
37 #include "brw_structs.h"
38 #include "main/imports.h"
39
40
41 /* Glossary:
42 *
43 * URB - uniform resource buffer. A mid-sized buffer which is
44 * partitioned between the fixed function units and used for passing
45 * values (vertices, primitives, constants) between them.
46 *
47 * CURBE - constant URB entry. An urb region (entry) used to hold
48 * constant values which the fixed function units can be instructed to
49 * preload into the GRF when spawining a thread.
50 *
51 * VUE - vertex URB entry. An urb entry holding a vertex and usually
52 * a vertex header. The header contains control information and
53 * things like primitive type, Begin/end flags and clip codes.
54 *
55 * PUE - primitive URB entry. An urb entry produced by the setup (SF)
56 * unit holding rasterization and interpolation parameters.
57 *
58 * GRF - general register file. One of several register files
59 * addressable by programmed threads. The inputs (r0, payload, curbe,
60 * urb) of the thread are preloaded to this area before the thread is
61 * spawned. The registers are individually 8 dwords wide and suitable
62 * for general usage. Registers holding thread input values are not
63 * special and may be overwritten.
64 *
65 * MRF - message register file. Threads communicate (and terminate)
66 * by sending messages. Message parameters are placed in contigous
67 * MRF registers. All program output is via these messages. URB
68 * entries are populated by sending a message to the shared URB
69 * function containing the new data, together with a control word,
70 * often an unmodified copy of R0.
71 *
72 * R0 - GRF register 0. Typically holds control information used when
73 * sending messages to other threads.
74 *
75 * EU or GEN4 EU: The name of the programmable subsystem of the
76 * i965 hardware. Threads are executed by the EU, the registers
77 * described above are part of the EU architecture.
78 *
79 * Fixed function units:
80 *
81 * CS - Command streamer. Notional first unit, little software
82 * interaction. Holds the URB entries used for constant data, ie the
83 * CURBEs.
84 *
85 * VF/VS - Vertex Fetch / Vertex Shader. The fixed function part of
86 * this unit is responsible for pulling vertices out of vertex buffers
87 * in vram and injecting them into the processing pipe as VUEs. If
88 * enabled, it first passes them to a VS thread which is a good place
89 * for the driver to implement any active vertex shader.
90 *
91 * GS - Geometry Shader. This corresponds to a new DX10 concept. If
92 * enabled, incoming strips etc are passed to GS threads in individual
93 * line/triangle/point units. The GS thread may perform arbitary
94 * computation and emit whatever primtives with whatever vertices it
95 * chooses. This makes GS an excellent place to implement GL's
96 * unfilled polygon modes, though of course it is capable of much
97 * more. Additionally, GS is used to translate away primitives not
98 * handled by latter units, including Quads and Lineloops.
99 *
100 * CS - Clipper. Mesa's clipping algorithms are imported to run on
101 * this unit. The fixed function part performs cliptesting against
102 * the 6 fixed clipplanes and makes descisions on whether or not the
103 * incoming primitive needs to be passed to a thread for clipping.
104 * User clip planes are handled via cooperation with the VS thread.
105 *
106 * SF - Strips Fans or Setup: Triangles are prepared for
107 * rasterization. Interpolation coefficients are calculated.
108 * Flatshading and two-side lighting usually performed here.
109 *
110 * WM - Windower. Interpolation of vertex attributes performed here.
111 * Fragment shader implemented here. SIMD aspects of EU taken full
112 * advantage of, as pixels are processed in blocks of 16.
113 *
114 * CC - Color Calculator. No EU threads associated with this unit.
115 * Handles blending and (presumably) depth and stencil testing.
116 */
117
118 #define BRW_FALLBACK_TEXTURE 0x1
119 #define BRW_MAX_CURBE (32*16)
120
121 struct brw_context;
122
123 #define BRW_NEW_URB_FENCE 0x1
124 #define BRW_NEW_FRAGMENT_PROGRAM 0x2
125 #define BRW_NEW_VERTEX_PROGRAM 0x4
126 #define BRW_NEW_INPUT_DIMENSIONS 0x8
127 #define BRW_NEW_CURBE_OFFSETS 0x10
128 #define BRW_NEW_REDUCED_PRIMITIVE 0x20
129 #define BRW_NEW_PRIMITIVE 0x40
130 #define BRW_NEW_CONTEXT 0x80
131 #define BRW_NEW_WM_INPUT_DIMENSIONS 0x100
132 #define BRW_NEW_INPUT_VARYING 0x200
133 #define BRW_NEW_PSP 0x800
134 #define BRW_NEW_METAOPS 0x1000
135 #define BRW_NEW_FENCE 0x2000
136 #define BRW_NEW_LOCK 0x4000
137 #define BRW_NEW_INDICES 0x8000
138 #define BRW_NEW_VERTICES 0x10000
139 /**
140 * Used for any batch entry with a relocated pointer that will be used
141 * by any 3D rendering.
142 */
143 #define BRW_NEW_BATCH 0x8000
144 /** brw->depth_region updated */
145 #define BRW_NEW_DEPTH_BUFFER 0x10000
146
147 struct brw_state_flags {
148 /** State update flags signalled by mesa internals */
149 GLuint mesa;
150 /**
151 * State update flags signalled as the result of brw_tracked_state updates
152 */
153 GLuint brw;
154 /** State update flags signalled by brw_state_cache.c searches */
155 GLuint cache;
156 };
157
158 struct brw_vertex_program {
159 struct gl_vertex_program program;
160 GLuint id;
161 GLuint param_state; /* flags indicating state tracked by params */
162 };
163
164
165
166 struct brw_fragment_program {
167 struct gl_fragment_program program;
168 GLuint id;
169 GLuint param_state; /* flags indicating state tracked by params */
170 };
171
172
173
174
175 /* Data about a particular attempt to compile a program. Note that
176 * there can be many of these, each in a different GL state
177 * corresponding to a different brw_wm_prog_key struct, with different
178 * compiled programs:
179 */
180 struct brw_wm_prog_data {
181 GLuint curb_read_length;
182 GLuint urb_read_length;
183
184 GLuint first_curbe_grf;
185 GLuint total_grf;
186 GLuint total_scratch;
187
188 GLuint nr_params;
189 GLboolean error;
190
191 /* Pointer to tracked values (only valid once
192 * _mesa_load_state_parameters has been called at runtime).
193 */
194 const GLfloat *param[BRW_MAX_CURBE];
195 };
196
197 struct brw_sf_prog_data {
198 GLuint urb_read_length;
199 GLuint total_grf;
200
201 /* Each vertex may have upto 12 attributes, 4 components each,
202 * except WPOS which requires only 2. (11*4 + 2) == 44 ==> 11
203 * rows.
204 *
205 * Actually we use 4 for each, so call it 12 rows.
206 */
207 GLuint urb_entry_size;
208 };
209
210 struct brw_clip_prog_data {
211 GLuint curb_read_length; /* user planes? */
212 GLuint clip_mode;
213 GLuint urb_read_length;
214 GLuint total_grf;
215 };
216
217 struct brw_gs_prog_data {
218 GLuint urb_read_length;
219 GLuint total_grf;
220 };
221
222 struct brw_vs_prog_data {
223 GLuint curb_read_length;
224 GLuint urb_read_length;
225 GLuint total_grf;
226 GLuint outputs_written;
227
228 GLuint inputs_read;
229
230 /* Used for calculating urb partitions:
231 */
232 GLuint urb_entry_size;
233 };
234
235
236 /* Size == 0 if output either not written, or always [0,0,0,1]
237 */
238 struct brw_vs_ouput_sizes {
239 GLubyte output_size[VERT_RESULT_MAX];
240 };
241
242
243 #define BRW_MAX_TEX_UNIT 8
244 #define BRW_WM_MAX_SURF BRW_MAX_TEX_UNIT + MAX_DRAW_BUFFERS
245
246 enum brw_cache_id {
247 BRW_CC_VP,
248 BRW_CC_UNIT,
249 BRW_WM_PROG,
250 BRW_SAMPLER_DEFAULT_COLOR,
251 BRW_SAMPLER,
252 BRW_WM_UNIT,
253 BRW_SF_PROG,
254 BRW_SF_VP,
255 BRW_SF_UNIT,
256 BRW_VS_UNIT,
257 BRW_VS_PROG,
258 BRW_GS_UNIT,
259 BRW_GS_PROG,
260 BRW_CLIP_VP,
261 BRW_CLIP_UNIT,
262 BRW_CLIP_PROG,
263 BRW_SS_SURFACE,
264 BRW_SS_SURF_BIND,
265
266 BRW_MAX_CACHE
267 };
268
269 struct brw_cache_item {
270 /**
271 * Effectively part of the key, cache_id identifies what kind of state
272 * buffer is involved, and also which brw->state.dirty.cache flag should
273 * be set when this cache item is chosen.
274 */
275 enum brw_cache_id cache_id;
276 /** 32-bit hash of the key data */
277 GLuint hash;
278 GLuint key_size; /* for variable-sized keys */
279 const void *key;
280 dri_bo **reloc_bufs;
281 GLuint nr_reloc_bufs;
282
283 dri_bo *bo;
284 GLuint data_size;
285
286 struct brw_cache_item *next;
287 };
288
289
290
291 struct brw_cache {
292 struct brw_context *brw;
293
294 struct brw_cache_item **items;
295 GLuint size, n_items;
296
297 GLuint key_size[BRW_MAX_CACHE]; /* for fixed-size keys */
298 GLuint aux_size[BRW_MAX_CACHE];
299 char *name[BRW_MAX_CACHE];
300
301 /* Record of the last BOs chosen for each cache_id. Used to set
302 * brw->state.dirty.cache when a new cache item is chosen.
303 */
304 dri_bo *last_bo[BRW_MAX_CACHE];
305 };
306
307
308
309 struct brw_state_pointers {
310 struct gl_colorbuffer_attrib *Color;
311 struct gl_depthbuffer_attrib *Depth;
312 struct gl_fog_attrib *Fog;
313 struct gl_hint_attrib *Hint;
314 struct gl_light_attrib *Light;
315 struct gl_line_attrib *Line;
316 struct gl_point_attrib *Point;
317 struct gl_polygon_attrib *Polygon;
318 GLuint *PolygonStipple;
319 struct gl_scissor_attrib *Scissor;
320 struct gl_stencil_attrib *Stencil;
321 struct gl_texture_attrib *Texture;
322 struct gl_transform_attrib *Transform;
323 struct gl_viewport_attrib *Viewport;
324 struct gl_vertex_program_state *VertexProgram;
325 struct gl_fragment_program_state *FragmentProgram;
326 };
327
328 /* Considered adding a member to this struct to document which flags
329 * an update might raise so that ordering of the state atoms can be
330 * checked or derived at runtime. Dropped the idea in favor of having
331 * a debug mode where the state is monitored for flags which are
332 * raised that have already been tested against.
333 */
334 struct brw_tracked_state {
335 struct brw_state_flags dirty;
336 void (*prepare)( struct brw_context *brw );
337 void (*emit)( struct brw_context *brw );
338 };
339
340 /* Flags for brw->state.cache.
341 */
342 #define CACHE_NEW_CC_VP (1<<BRW_CC_VP)
343 #define CACHE_NEW_CC_UNIT (1<<BRW_CC_UNIT)
344 #define CACHE_NEW_WM_PROG (1<<BRW_WM_PROG)
345 #define CACHE_NEW_SAMPLER_DEFAULT_COLOR (1<<BRW_SAMPLER_DEFAULT_COLOR)
346 #define CACHE_NEW_SAMPLER (1<<BRW_SAMPLER)
347 #define CACHE_NEW_WM_UNIT (1<<BRW_WM_UNIT)
348 #define CACHE_NEW_SF_PROG (1<<BRW_SF_PROG)
349 #define CACHE_NEW_SF_VP (1<<BRW_SF_VP)
350 #define CACHE_NEW_SF_UNIT (1<<BRW_SF_UNIT)
351 #define CACHE_NEW_VS_UNIT (1<<BRW_VS_UNIT)
352 #define CACHE_NEW_VS_PROG (1<<BRW_VS_PROG)
353 #define CACHE_NEW_GS_UNIT (1<<BRW_GS_UNIT)
354 #define CACHE_NEW_GS_PROG (1<<BRW_GS_PROG)
355 #define CACHE_NEW_CLIP_VP (1<<BRW_CLIP_VP)
356 #define CACHE_NEW_CLIP_UNIT (1<<BRW_CLIP_UNIT)
357 #define CACHE_NEW_CLIP_PROG (1<<BRW_CLIP_PROG)
358 #define CACHE_NEW_SURFACE (1<<BRW_SS_SURFACE)
359 #define CACHE_NEW_SURF_BIND (1<<BRW_SS_SURF_BIND)
360
361 struct brw_cached_batch_item {
362 struct header *header;
363 GLuint sz;
364 struct brw_cached_batch_item *next;
365 };
366
367
368
369 /* Protect against a future where VERT_ATTRIB_MAX > 32. Wouldn't life
370 * be easier if C allowed arrays of packed elements?
371 */
372 #define ATTRIB_BIT_DWORDS ((VERT_ATTRIB_MAX+31)/32)
373
374 struct brw_vertex_element {
375 const struct gl_client_array *glarray;
376
377 /** Size of a complete element */
378 GLuint element_size;
379 /** Number of uploaded elements for this input. */
380 GLuint count;
381 /** Byte stride between elements in the uploaded array */
382 GLuint stride;
383 /** Offset of the first element within the buffer object */
384 unsigned int offset;
385 /** Buffer object containing the uploaded vertex data */
386 dri_bo *bo;
387 };
388
389
390
391 struct brw_vertex_info {
392 GLuint varying; /* varying:1[VERT_ATTRIB_MAX] */
393 GLuint sizes[ATTRIB_BIT_DWORDS * 2]; /* sizes:2[VERT_ATTRIB_MAX] */
394 };
395
396
397
398
399 /* Cache for TNL programs.
400 */
401 struct brw_tnl_cache_item {
402 GLuint hash;
403 void *key;
404 void *data;
405 struct brw_tnl_cache_item *next;
406 };
407
408 struct brw_tnl_cache {
409 struct brw_tnl_cache_item **items;
410 GLuint size, n_items;
411 };
412
413 struct brw_query_object {
414 struct gl_query_object Base;
415
416 /** Doubly linked list of active query objects in the context. */
417 struct brw_query_object *prev, *next;
418
419 /** Last query BO associated with this query. */
420 dri_bo *bo;
421 /** First index in bo with query data for this object. */
422 int first_index;
423 /** Last index in bo with query data for this object. */
424 int last_index;
425
426 /* Total count of pixels from previous BOs */
427 unsigned int count;
428 };
429
430 struct brw_context
431 {
432 struct intel_context intel;
433 GLuint primitive;
434
435 GLboolean emit_state_always;
436 GLboolean tmp_fallback;
437 GLboolean no_batch_wrap;
438
439 struct {
440 struct brw_state_flags dirty;
441 struct brw_tracked_state **atoms;
442 GLuint nr_atoms;
443
444 GLuint nr_draw_regions;
445 struct intel_region *draw_regions[MAX_DRAW_BUFFERS];
446 struct intel_region *depth_region;
447 } state;
448
449 struct brw_state_pointers attribs;
450 struct brw_cache cache;
451 struct brw_cached_batch_item *cached_batch_items;
452
453 struct {
454 struct brw_vertex_element inputs[VERT_ATTRIB_MAX];
455
456 #define BRW_NR_UPLOAD_BUFS 17
457 #define BRW_UPLOAD_INIT_SIZE (128*1024)
458
459 struct {
460 dri_bo *bo;
461 GLuint offset;
462 } upload;
463
464 /* Summary of size and varying of active arrays, so we can check
465 * for changes to this state:
466 */
467 struct brw_vertex_info info;
468 unsigned int min_index, max_index;
469 } vb;
470
471 struct {
472 /**
473 * Index buffer for this draw_prims call.
474 *
475 * Updates are signaled by BRW_NEW_INDICES.
476 */
477 const struct _mesa_index_buffer *ib;
478
479 dri_bo *bo;
480 unsigned int offset;
481 } ib;
482
483 struct {
484 /* Will be allocated on demand if needed.
485 */
486 struct brw_state_pointers attribs;
487 struct gl_vertex_program *vp;
488 struct gl_fragment_program *fp, *fp_tex;
489
490 struct gl_buffer_object *vbo;
491
492 struct intel_region *saved_draw_region;
493 GLuint saved_nr_draw_regions;
494 struct intel_region *saved_depth_region;
495
496 GLuint restore_draw_buffers[MAX_DRAW_BUFFERS];
497 GLuint restore_num_draw_buffers;
498
499 struct gl_fragment_program *restore_fp;
500
501 GLboolean active;
502 } metaops;
503
504
505 /* Active vertex program:
506 */
507 const struct gl_vertex_program *vertex_program;
508 const struct gl_fragment_program *fragment_program;
509
510
511 /* For populating the gtt:
512 */
513 GLuint next_free_page;
514
515
516 /* BRW_NEW_URB_ALLOCATIONS:
517 */
518 struct {
519 GLuint vsize; /* vertex size plus header in urb registers */
520 GLuint csize; /* constant buffer size in urb registers */
521 GLuint sfsize; /* setup data size in urb registers */
522
523 GLboolean constrained;
524
525 GLuint nr_vs_entries;
526 GLuint nr_gs_entries;
527 GLuint nr_clip_entries;
528 GLuint nr_sf_entries;
529 GLuint nr_cs_entries;
530
531 /* GLuint vs_size; */
532 /* GLuint gs_size; */
533 /* GLuint clip_size; */
534 /* GLuint sf_size; */
535 /* GLuint cs_size; */
536
537 GLuint vs_start;
538 GLuint gs_start;
539 GLuint clip_start;
540 GLuint sf_start;
541 GLuint cs_start;
542 } urb;
543
544
545 /* BRW_NEW_CURBE_OFFSETS:
546 */
547 struct {
548 GLuint wm_start;
549 GLuint wm_size;
550 GLuint clip_start;
551 GLuint clip_size;
552 GLuint vs_start;
553 GLuint vs_size;
554 GLuint total_size;
555
556 /* Dynamic tracker which changes to reflect the state referenced
557 * by active fp and vp program parameters:
558 */
559 struct brw_tracked_state tracked_state;
560
561 dri_bo *curbe_bo;
562 /** Offset within curbe_bo of space for current curbe entry */
563 GLuint curbe_offset;
564 /** Offset within curbe_bo of space for next curbe entry */
565 GLuint curbe_next_offset;
566
567 GLfloat *last_buf;
568 GLuint last_bufsz;
569 /**
570 * Whether we should create a new bo instead of reusing the old one
571 * (if we just dispatch the batch pointing at the old one.
572 */
573 GLboolean need_new_bo;
574 } curbe;
575
576 struct {
577 struct brw_vs_prog_data *prog_data;
578
579 dri_bo *prog_bo;
580 dri_bo *state_bo;
581 } vs;
582
583 struct {
584 struct brw_gs_prog_data *prog_data;
585
586 GLboolean prog_active;
587 dri_bo *prog_bo;
588 dri_bo *state_bo;
589 } gs;
590
591 struct {
592 struct brw_clip_prog_data *prog_data;
593
594 dri_bo *prog_bo;
595 dri_bo *state_bo;
596 dri_bo *vp_bo;
597 } clip;
598
599
600 struct {
601 struct brw_sf_prog_data *prog_data;
602
603 dri_bo *prog_bo;
604 dri_bo *state_bo;
605 dri_bo *vp_bo;
606 } sf;
607
608 struct {
609 struct brw_wm_prog_data *prog_data;
610 struct brw_wm_compile *compile_data;
611
612 /* Input sizes, calculated from active vertex program:
613 */
614 GLuint input_size_masks[4];
615
616 /** Array of surface default colors (texture border color) */
617 dri_bo *sdc_bo[BRW_MAX_TEX_UNIT];
618
619 GLuint render_surf;
620 GLuint nr_surfaces;
621
622 GLuint max_threads;
623 dri_bo *scratch_buffer;
624
625 GLuint sampler_count;
626 dri_bo *sampler_bo;
627
628 /** Binding table of pointers to surf_bo entries */
629 dri_bo *bind_bo;
630 dri_bo *surf_bo[BRW_WM_MAX_SURF];
631
632 dri_bo *prog_bo;
633 dri_bo *state_bo;
634 } wm;
635
636
637 struct {
638 dri_bo *prog_bo;
639 dri_bo *state_bo;
640 dri_bo *vp_bo;
641 } cc;
642
643 struct {
644 struct brw_query_object active_head;
645 dri_bo *bo;
646 int index;
647 GLboolean active;
648 } query;
649 /* Used to give every program string a unique id
650 */
651 GLuint program_id;
652 };
653
654
655 #define BRW_PACKCOLOR8888(r,g,b,a) ((r<<24) | (g<<16) | (b<<8) | a)
656
657
658
659 /*======================================================================
660 * brw_vtbl.c
661 */
662 void brwInitVtbl( struct brw_context *brw );
663 void brw_do_flush( struct brw_context *brw,
664 GLuint flags );
665
666 /*======================================================================
667 * brw_context.c
668 */
669 GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
670 __DRIcontextPrivate *driContextPriv,
671 void *sharedContextPrivate);
672
673 /*======================================================================
674 * brw_queryobj.c
675 */
676 void brw_init_queryobj_functions(struct dd_function_table *functions);
677 void brw_prepare_query_begin(struct brw_context *brw);
678 void brw_emit_query_begin(struct brw_context *brw);
679 void brw_emit_query_end(struct brw_context *brw);
680
681 /*======================================================================
682 * brw_state.c
683 */
684 void brw_validate_state( struct brw_context *brw );
685 void brw_init_state( struct brw_context *brw );
686 void brw_destroy_state( struct brw_context *brw );
687
688
689 /*======================================================================
690 * brw_state_dump.c
691 */
692 void brw_debug_batch(struct intel_context *intel);
693
694 /*======================================================================
695 * brw_tex.c
696 */
697 void brwUpdateTextureState( struct intel_context *intel );
698 void brw_FrameBufferTexInit( struct brw_context *brw,
699 struct intel_region *region );
700 void brw_FrameBufferTexDestroy( struct brw_context *brw );
701 void brw_validate_textures( struct brw_context *brw );
702
703 /*======================================================================
704 * brw_metaops.c
705 */
706
707 void brw_init_metaops( struct brw_context *brw );
708 void brw_destroy_metaops( struct brw_context *brw );
709
710
711 /*======================================================================
712 * brw_program.c
713 */
714 void brwInitFragProgFuncs( struct dd_function_table *functions );
715
716
717 /* brw_urb.c
718 */
719 void brw_upload_urb_fence(struct brw_context *brw);
720
721 void brw_upload_constant_buffer_state(struct brw_context *brw);
722
723
724 /*======================================================================
725 * Inline conversion functions. These are better-typed than the
726 * macros used previously:
727 */
728 static INLINE struct brw_context *
729 brw_context( GLcontext *ctx )
730 {
731 return (struct brw_context *)ctx;
732 }
733
734 #define DO_SETUP_BITS ((1<<(FRAG_ATTRIB_MAX)) - 1)
735
736 #endif
737