summaryrefslogtreecommitdiff
path: root/src/gallium/state_trackers/xorg/xorg_exa.c
blob: bd97baae2b636aa619fe29252c09580e9a307318 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
/*
 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 *
 * Author: Alan Hourihane <alanh@tungstengraphics.com>
 * Author: Jakob Bornecrantz <wallbraker@gmail.com>
 *
 */

#include "xorg_exa.h"
#include "xorg_tracker.h"
#include "xorg_composite.h"
#include "xorg_exa_tgsi.h"

#include <xorg-server.h>
#include <xf86.h>
#include <picturestr.h>
#include <picture.h>

#include "pipe/p_format.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "pipe/p_inlines.h"

#include "util/u_rect.h"

#define DEBUG_PRINT 0
#define DEBUG_SOLID 0
#define ACCEL_ENABLED TRUE

/*
 * Helper functions
 */

static void
exa_get_pipe_format(int depth, enum pipe_format *format, int *bbp)
{
    switch (depth) {
    case 32:
	*format = PIPE_FORMAT_A8R8G8B8_UNORM;
	assert(*bbp == 32);
	break;
    case 24:
	*format = PIPE_FORMAT_X8R8G8B8_UNORM;
	assert(*bbp == 32);
	break;
    case 16:
	*format = PIPE_FORMAT_R5G6B5_UNORM;
	assert(*bbp == 16);
	break;
    case 15:
	*format = PIPE_FORMAT_A1R5G5B5_UNORM;
	assert(*bbp == 16);
	break;
    case 8:
	*format = PIPE_FORMAT_L8_UNORM;
	assert(*bbp == 8);
	break;
    case 4:
    case 1:
	*format = PIPE_FORMAT_A8R8G8B8_UNORM; /* bad bad bad */
	break;
    default:
	assert(0);
	break;
    }
}

static void
xorg_exa_common_done(struct exa_context *exa)
{
   exa->copy.src = NULL;
   exa->copy.dst = NULL;
   exa->transform.has_src = FALSE;
   exa->transform.has_mask = FALSE;
   exa->has_solid_color = FALSE;
   exa->num_bound_samplers = 0;
}

/*
 * Static exported EXA functions
 */

static void
ExaWaitMarker(ScreenPtr pScreen, int marker)
{
   ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
   modesettingPtr ms = modesettingPTR(pScrn);
   struct exa_context *exa = ms->exa;

#if 0
   xorg_exa_flush(exa, PIPE_FLUSH_RENDER_CACHE, NULL);
#else
   xorg_exa_finish(exa);
#endif
}

static int
ExaMarkSync(ScreenPtr pScreen)
{
   return 1;
}

static Bool
ExaDownloadFromScreen(PixmapPtr pPix, int x,  int y, int w,  int h, char *dst,
		      int dst_pitch)
{
    ScreenPtr pScreen = pPix->drawable.pScreen;
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_context *exa = ms->exa;
    struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pPix);
    struct pipe_transfer *transfer;

    if (!priv || !priv->tex)
	return FALSE;

    if (exa->pipe->is_texture_referenced(exa->pipe, priv->tex, 0, 0) &
	PIPE_REFERENCED_FOR_WRITE)
	exa->pipe->flush(exa->pipe, 0, NULL);

    transfer = exa->scrn->get_tex_transfer(exa->scrn, priv->tex, 0, 0, 0,
					   PIPE_TRANSFER_READ, x, y, w, h);
    if (!transfer)
	return FALSE;

#if DEBUG_PRINT
    debug_printf("------ ExaDownloadFromScreen(%d, %d, %d, %d, %d)\n",
                 x, y, w, h, dst_pitch);
#endif

    util_copy_rect((unsigned char*)dst, &priv->tex->block, dst_pitch, 0, 0,
		   w, h, exa->scrn->transfer_map(exa->scrn, transfer),
		   transfer->stride, 0, 0);

    exa->scrn->transfer_unmap(exa->scrn, transfer);
    exa->scrn->tex_transfer_destroy(transfer);

    return TRUE;
}

static Bool
ExaUploadToScreen(PixmapPtr pPix, int x, int y, int w, int h, char *src,
		  int src_pitch)
{
    ScreenPtr pScreen = pPix->drawable.pScreen;
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_context *exa = ms->exa;
    struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pPix);
    struct pipe_transfer *transfer;

    if (!priv || !priv->tex)
	return FALSE;

    transfer = exa->scrn->get_tex_transfer(exa->scrn, priv->tex, 0, 0, 0,
					   PIPE_TRANSFER_WRITE, x, y, w, h);
    if (!transfer)
	return FALSE;

#if DEBUG_PRINT
    debug_printf("++++++ ExaUploadToScreen(%d, %d, %d, %d, %d)\n",
                 x, y, w, h, src_pitch);
#endif

    util_copy_rect(exa->scrn->transfer_map(exa->scrn, transfer),
		   &priv->tex->block, transfer->stride, 0, 0, w, h,
		   (unsigned char*)src, src_pitch, 0, 0);

    exa->scrn->transfer_unmap(exa->scrn, transfer);
    exa->scrn->tex_transfer_destroy(transfer);

    return TRUE;
}

static Bool
ExaPrepareAccess(PixmapPtr pPix, int index)
{
    ScreenPtr pScreen = pPix->drawable.pScreen;
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_context *exa = ms->exa;
    struct exa_pixmap_priv *priv;

    priv = exaGetPixmapDriverPrivate(pPix);

    if (!priv)
	return FALSE;

    if (!priv->tex)
	return FALSE;

    if (priv->map_count == 0)
    {
	if (exa->pipe->is_texture_referenced(exa->pipe, priv->tex, 0, 0) &
	    PIPE_REFERENCED_FOR_WRITE)
	    exa->pipe->flush(exa->pipe, 0, NULL);

	priv->map_transfer =
	    exa->scrn->get_tex_transfer(exa->scrn, priv->tex, 0, 0, 0,
#ifdef EXA_MIXED_PIXMAPS
					PIPE_TRANSFER_MAP_DIRECTLY |
#endif
					PIPE_TRANSFER_READ_WRITE,
					0, 0, priv->tex->width[0], priv->tex->height[0]);
	if (!priv->map_transfer)
#ifdef EXA_MIXED_PIXMAPS
	    return FALSE;
#else
	    FatalError("failed to create transfer\n");
#endif

	pPix->devPrivate.ptr =
	    exa->scrn->transfer_map(exa->scrn, priv->map_transfer);
	pPix->devKind = priv->map_transfer->stride;
    }

    priv->map_count++;

    return TRUE;
}

static void
ExaFinishAccess(PixmapPtr pPix, int index)
{
    ScreenPtr pScreen = pPix->drawable.pScreen;
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_context *exa = ms->exa;
    struct exa_pixmap_priv *priv;
    priv = exaGetPixmapDriverPrivate(pPix);

    if (!priv)
	return;

    if (!priv->map_transfer)
	return;

    if (--priv->map_count == 0) {
	assert(priv->map_transfer);
	exa->scrn->transfer_unmap(exa->scrn, priv->map_transfer);
	exa->scrn->tex_transfer_destroy(priv->map_transfer);
	priv->map_transfer = NULL;
	pPix->devPrivate.ptr = NULL;
    }
}

static void
ExaDone(PixmapPtr pPixmap)
{
    ScrnInfoPtr pScrn = xf86Screens[pPixmap->drawable.pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pPixmap);
    struct exa_context *exa = ms->exa;

    if (!priv)
	return;

    xorg_exa_common_done(exa);
}

static void
ExaDoneComposite(PixmapPtr pPixmap)
{
   ScrnInfoPtr pScrn = xf86Screens[pPixmap->drawable.pScreen->myNum];
   modesettingPtr ms = modesettingPTR(pScrn);
   struct exa_context *exa = ms->exa;

   xorg_exa_common_done(exa);
}

static Bool
ExaPrepareSolid(PixmapPtr pPixmap, int alu, Pixel planeMask, Pixel fg)
{
    ScrnInfoPtr pScrn = xf86Screens[pPixmap->drawable.pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pPixmap);
    struct exa_context *exa = ms->exa;

#if DEBUG_PRINT
    debug_printf("ExaPrepareSolid(0x%x)\n", fg);
#endif
    if (!exa->pipe)
	XORG_FALLBACK("accle not enabled");

    if (!priv || !priv->tex)
	XORG_FALLBACK("%s", !priv ? "!priv" : "!priv->tex");

    if (!EXA_PM_IS_SOLID(&pPixmap->drawable, planeMask))
	XORG_FALLBACK("planeMask is not solid");

    if (alu != GXcopy)
	XORG_FALLBACK("not GXcopy");

    if (!exa->scrn->is_format_supported(exa->scrn, priv->tex->format,
                                        priv->tex->target,
                                        PIPE_TEXTURE_USAGE_RENDER_TARGET, 0)) {
	XORG_FALLBACK("format %s", pf_name(priv->tex->format));
    }

#if DEBUG_SOLID
    fg = 0xffff0000;
#endif

    return ACCEL_ENABLED && xorg_solid_bind_state(exa, priv, fg);
}

static void
ExaSolid(PixmapPtr pPixmap, int x0, int y0, int x1, int y1)
{
    ScrnInfoPtr pScrn = xf86Screens[pPixmap->drawable.pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_context *exa = ms->exa;
    struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pPixmap);

#if DEBUG_PRINT
    debug_printf("\tExaSolid(%d, %d, %d, %d)\n", x0, y0, x1, y1);
#endif

#if 0
    if (x0 == 0 && y0 == 0 &&
        x1 == priv->tex->width[0] &&
        y1 == priv->tex->height[0]) {
       exa->ctx->clear(exa->pipe, PIPE_CLEAR_COLOR,
                       exa->solid_color, 1., 0);
    } else
#endif

#if DEBUG_SOLID
       exa->solid_color[0] = 0.f;
       exa->solid_color[1] = 1.f;
       exa->solid_color[2] = 0.f;
       exa->solid_color[3] = 1.f;
    xorg_solid(exa, priv, 0, 0, 1024, 768);
       exa->solid_color[0] = 1.f;
       exa->solid_color[1] = 0.f;
       exa->solid_color[2] = 0.f;
       exa->solid_color[3] = 1.f;
       xorg_solid(exa, priv, 0, 0, 300, 300);
       xorg_solid(exa, priv, 300, 300, 350, 350);
       xorg_solid(exa, priv, 350, 350, 500, 500);

       xorg_solid(exa, priv,
               priv->tex->width[0] - 10,
               priv->tex->height[0] - 10,
               priv->tex->width[0],
               priv->tex->height[0]);

    exa->solid_color[0] = 0.f;
    exa->solid_color[1] = 0.f;
    exa->solid_color[2] = 1.f;
    exa->solid_color[3] = 1.f;

    exa->has_solid_color = FALSE;
    ExaPrepareCopy(pPixmap, pPixmap, 0, 0, GXcopy, 0xffffffff);
    ExaCopy(pPixmap, 0, 0, 50, 50, 500, 500);
#else
    xorg_solid(exa, priv, x0, y0, x1, y1) ;
#endif
}

static Bool
ExaPrepareCopy(PixmapPtr pSrcPixmap, PixmapPtr pDstPixmap, int xdir,
	       int ydir, int alu, Pixel planeMask)
{
    ScrnInfoPtr pScrn = xf86Screens[pDstPixmap->drawable.pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_context *exa = ms->exa;
    struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pDstPixmap);
    struct exa_pixmap_priv *src_priv = exaGetPixmapDriverPrivate(pSrcPixmap);

#if DEBUG_PRINT
    debug_printf("ExaPrepareCopy\n");
#endif
    if (!exa->pipe)
	XORG_FALLBACK("accle not enabled");

    if (!priv || !priv->tex)
	XORG_FALLBACK("pDst %s", !priv ? "!priv" : "!priv->tex");

    if (!src_priv || !src_priv->tex)
	XORG_FALLBACK("pSrc %s", !src_priv ? "!priv" : "!priv->tex");

    if (!EXA_PM_IS_SOLID(&pSrcPixmap->drawable, planeMask))
	XORG_FALLBACK("planeMask is not solid");

    if (alu != GXcopy)
	XORG_FALLBACK("alu not GXcopy");

    if (!exa->scrn->is_format_supported(exa->scrn, priv->tex->format,
                                        priv->tex->target,
                                        PIPE_TEXTURE_USAGE_RENDER_TARGET, 0))
	XORG_FALLBACK("pDst format %s", pf_name(priv->tex->format));

    if (!exa->scrn->is_format_supported(exa->scrn, src_priv->tex->format,
                                        src_priv->tex->target,
                                        PIPE_TEXTURE_USAGE_SAMPLER, 0))
	XORG_FALLBACK("pSrc format %s", pf_name(src_priv->tex->format));

    exa->copy.src = src_priv;
    exa->copy.dst = priv;

    return ACCEL_ENABLED;
}

static void
ExaCopy(PixmapPtr pDstPixmap, int srcX, int srcY, int dstX, int dstY,
	int width, int height)
{
   ScrnInfoPtr pScrn = xf86Screens[pDstPixmap->drawable.pScreen->myNum];
   modesettingPtr ms = modesettingPTR(pScrn);
   struct exa_context *exa = ms->exa;
   struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pDstPixmap);

#if DEBUG_PRINT
   debug_printf("\tExaCopy(srcx=%d, srcy=%d, dstX=%d, dstY=%d, w=%d, h=%d)\n",
                srcX, srcY, dstX, dstY, width, height);
#endif

   debug_assert(priv == exa->copy.dst);

   renderer_copy_pixmap(exa->renderer, exa->copy.dst, dstX, dstY,
                        exa->copy.src, srcX, srcY,
                        width, height);
}

static Bool
ExaPrepareComposite(int op, PicturePtr pSrcPicture,
		    PicturePtr pMaskPicture, PicturePtr pDstPicture,
		    PixmapPtr pSrc, PixmapPtr pMask, PixmapPtr pDst)
{
   ScrnInfoPtr pScrn = xf86Screens[pDst->drawable.pScreen->myNum];
   modesettingPtr ms = modesettingPTR(pScrn);
   struct exa_context *exa = ms->exa;
   struct exa_pixmap_priv *priv;

#if DEBUG_PRINT
   debug_printf("ExaPrepareComposite(%d, src=0x%p, mask=0x%p, dst=0x%p)\n",
                op, pSrcPicture, pMaskPicture, pDstPicture);
#endif
   if (!exa->pipe)
      XORG_FALLBACK("accle not enabled");

   priv = exaGetPixmapDriverPrivate(pDst);
   if (!priv || !priv->tex)
      XORG_FALLBACK("pDst %s", !priv ? "!priv" : "!priv->tex");

   if (!exa->scrn->is_format_supported(exa->scrn, priv->tex->format,
                                       priv->tex->target,
                                       PIPE_TEXTURE_USAGE_RENDER_TARGET, 0))
      XORG_FALLBACK("pDst format: %s", pf_name(priv->tex->format));

   if (pSrc) {
      priv = exaGetPixmapDriverPrivate(pSrc);
      if (!priv || !priv->tex)
         XORG_FALLBACK("pSrc %s", !priv ? "!priv" : "!priv->tex");

      if (!exa->scrn->is_format_supported(exa->scrn, priv->tex->format,
                                          priv->tex->target,
                                          PIPE_TEXTURE_USAGE_SAMPLER, 0))
         XORG_FALLBACK("pSrc format: %s", pf_name(priv->tex->format));
   }

   if (pMask) {
      priv = exaGetPixmapDriverPrivate(pMask);
      if (!priv || !priv->tex)
         XORG_FALLBACK("pMask %s", !priv ? "!priv" : "!priv->tex");

      if (!exa->scrn->is_format_supported(exa->scrn, priv->tex->format,
                                          priv->tex->target,
                                          PIPE_TEXTURE_USAGE_SAMPLER, 0))
         XORG_FALLBACK("pMask format: %s", pf_name(priv->tex->format));
   }

   return ACCEL_ENABLED &&
          xorg_composite_bind_state(exa, op, pSrcPicture, pMaskPicture,
                                    pDstPicture,
                                    pSrc ? exaGetPixmapDriverPrivate(pSrc) : NULL,
                                    pMask ? exaGetPixmapDriverPrivate(pMask) : NULL,
                                    exaGetPixmapDriverPrivate(pDst));
}

static void
ExaComposite(PixmapPtr pDst, int srcX, int srcY, int maskX, int maskY,
	     int dstX, int dstY, int width, int height)
{
   ScrnInfoPtr pScrn = xf86Screens[pDst->drawable.pScreen->myNum];
   modesettingPtr ms = modesettingPTR(pScrn);
   struct exa_context *exa = ms->exa;
   struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pDst);

#if DEBUG_PRINT
   debug_printf("\tExaComposite(src[%d,%d], mask=[%d, %d], dst=[%d, %d], dim=[%d, %d])\n",
                srcX, srcY, maskX, maskY, dstX, dstY, width, height);
   debug_printf("\t   Num bound samplers = %d\n",
                exa->num_bound_samplers);
#endif

   xorg_composite(exa, priv, srcX, srcY, maskX, maskY,
                  dstX, dstY, width, height);
}

static Bool
ExaCheckComposite(int op,
		  PicturePtr pSrcPicture, PicturePtr pMaskPicture,
		  PicturePtr pDstPicture)
{
   boolean accelerated = xorg_composite_accelerated(op,
                                                    pSrcPicture,
                                                    pMaskPicture,
                                                    pDstPicture);
#if DEBUG_PRINT
   debug_printf("ExaCheckComposite(%d, %p, %p, %p) = %d\n",
                op, pSrcPicture, pMaskPicture, pDstPicture, accelerated);
#endif
   return ACCEL_ENABLED && accelerated;
}

static void *
ExaCreatePixmap(ScreenPtr pScreen, int size, int align)
{
    struct exa_pixmap_priv *priv;

    priv = xcalloc(1, sizeof(struct exa_pixmap_priv));
    if (!priv)
	return NULL;

    return priv;
}

static void
ExaDestroyPixmap(ScreenPtr pScreen, void *dPriv)
{
    struct exa_pixmap_priv *priv = (struct exa_pixmap_priv *)dPriv;

    if (!priv)
	return;

    pipe_texture_reference(&priv->tex, NULL);

    xfree(priv);
}

static Bool
ExaPixmapIsOffscreen(PixmapPtr pPixmap)
{
    struct exa_pixmap_priv *priv;

    priv = exaGetPixmapDriverPrivate(pPixmap);

    if (!priv)
	return FALSE;

    if (priv->tex)
	return TRUE;

    return FALSE;
}

int
xorg_exa_set_displayed_usage(PixmapPtr pPixmap)
{
    struct exa_pixmap_priv *priv;
    priv = exaGetPixmapDriverPrivate(pPixmap);

    if (!priv) {
	FatalError("NO PIXMAP PRIVATE\n");
	return 0;
    }

    priv->flags |= PIPE_TEXTURE_USAGE_PRIMARY;

    return 0;
}

int
xorg_exa_set_shared_usage(PixmapPtr pPixmap)
{
    struct exa_pixmap_priv *priv;
    priv = exaGetPixmapDriverPrivate(pPixmap);

    if (!priv) {
	FatalError("NO PIXMAP PRIVATE\n");
	return 0;
    }

    priv->flags |= PIPE_TEXTURE_USAGE_DISPLAY_TARGET;

    return 0;
}

unsigned
xorg_exa_get_pixmap_handle(PixmapPtr pPixmap, unsigned *stride_out)
{
    ScreenPtr pScreen = pPixmap->drawable.pScreen;
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_pixmap_priv *priv;
    unsigned handle;
    unsigned stride;

    if (!ms->exa) {
	FatalError("NO MS->EXA\n");
	return 0;
    }

    priv = exaGetPixmapDriverPrivate(pPixmap);

    if (!priv) {
	FatalError("NO PIXMAP PRIVATE\n");
	return 0;
    }

    ms->api->local_handle_from_texture(ms->api, ms->screen, priv->tex, &stride, &handle);
    if (stride_out)
	*stride_out = stride;

    return handle;
}

static Bool
ExaModifyPixmapHeader(PixmapPtr pPixmap, int width, int height,
		      int depth, int bitsPerPixel, int devKind,
		      pointer pPixData)
{
    ScreenPtr pScreen = pPixmap->drawable.pScreen;
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pPixmap);
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_context *exa = ms->exa;

    if (!priv || pPixData)
	return FALSE;

    if (depth <= 0)
	depth = pPixmap->drawable.depth;

    if (bitsPerPixel <= 0)
	bitsPerPixel = pPixmap->drawable.bitsPerPixel;

    if (width <= 0)
	width = pPixmap->drawable.width;

    if (height <= 0)
	height = pPixmap->drawable.height;

    if (width <= 0 || height <= 0 || depth <= 0)
	return FALSE;

    miModifyPixmapHeader(pPixmap, width, height, depth,
			     bitsPerPixel, devKind, NULL);

    /* Deal with screen resize */
    if (!priv->tex ||
        (priv->tex->width[0] != width ||
         priv->tex->height[0] != height ||
         priv->tex_flags != priv->flags)) {
	struct pipe_texture *texture = NULL;
	struct pipe_texture template;

	memset(&template, 0, sizeof(template));
	template.target = PIPE_TEXTURE_2D;
	exa_get_pipe_format(depth, &template.format, &bitsPerPixel);
	pf_get_block(template.format, &template.block);
	template.width[0] = width;
	template.height[0] = height;
	template.depth[0] = 1;
	template.last_level = 0;
	template.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET | priv->flags;
	priv->tex_flags = priv->flags;
	texture = exa->scrn->texture_create(exa->scrn, &template);

	if (priv->tex) {
	    struct pipe_surface *dst_surf;
	    struct pipe_surface *src_surf;

	    dst_surf = exa->scrn->get_tex_surface(
		exa->scrn, texture, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE);
	    src_surf = xorg_gpu_surface(exa->pipe->screen, priv);
        if (exa->pipe->surface_copy) {
            exa->pipe->surface_copy(exa->pipe, dst_surf, 0, 0, src_surf,
                        0, 0, min(width, texture->width[0]),
                        min(height, texture->height[0]));
        } else {
            util_surface_copy(exa->pipe, FALSE, dst_surf, 0, 0, src_surf,
                        0, 0, min(width, texture->width[0]),
                        min(height, texture->height[0]));
        }
	    exa->scrn->tex_surface_destroy(dst_surf);
	    exa->scrn->tex_surface_destroy(src_surf);
	}

	pipe_texture_reference(&priv->tex, texture);
	/* the texture we create has one reference */
	pipe_texture_reference(&texture, NULL);
    }

    return TRUE;
}

struct pipe_texture *
xorg_exa_get_texture(PixmapPtr pPixmap)
{
   struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pPixmap);
   struct pipe_texture *tex = NULL;
   pipe_texture_reference(&tex, priv->tex);
   return tex;
}

Bool
xorg_exa_set_texture(PixmapPtr pPixmap, struct  pipe_texture *tex)
{
    struct exa_pixmap_priv *priv = exaGetPixmapDriverPrivate(pPixmap);

    int mask = PIPE_TEXTURE_USAGE_PRIMARY | PIPE_TEXTURE_USAGE_DISPLAY_TARGET;

    if (!priv)
	return FALSE;

    if (pPixmap->drawable.width != tex->width[0] ||
	pPixmap->drawable.height != tex->height[0])
	return FALSE;

    pipe_texture_reference(&priv->tex, tex);
    priv->tex_flags = tex->tex_usage & mask;

    return TRUE;
}

struct pipe_texture *
xorg_exa_create_root_texture(ScrnInfoPtr pScrn,
			     int width, int height,
			     int depth, int bitsPerPixel)
{
    modesettingPtr ms = modesettingPTR(pScrn);
    struct exa_context *exa = ms->exa;
    struct pipe_texture template;

    memset(&template, 0, sizeof(template));
    template.target = PIPE_TEXTURE_2D;
    exa_get_pipe_format(depth, &template.format, &bitsPerPixel);
    pf_get_block(template.format, &template.block);
    template.width[0] = width;
    template.height[0] = height;
    template.depth[0] = 1;
    template.last_level = 0;
    template.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
    template.tex_usage |= PIPE_TEXTURE_USAGE_PRIMARY;
    template.tex_usage |= PIPE_TEXTURE_USAGE_DISPLAY_TARGET;

    return exa->scrn->texture_create(exa->scrn, &template);
}

void
xorg_exa_close(ScrnInfoPtr pScrn)
{
   modesettingPtr ms = modesettingPTR(pScrn);
   struct exa_context *exa = ms->exa;

   renderer_destroy(exa->renderer);

   if (exa->pipe)
      exa->pipe->destroy(exa->pipe);

   exaDriverFini(pScrn->pScreen);
   xfree(exa);
   ms->exa = NULL;
}

void *
xorg_exa_init(ScrnInfoPtr pScrn)
{
   modesettingPtr ms = modesettingPTR(pScrn);
   struct exa_context *exa;
   ExaDriverPtr pExa;

   exa = xcalloc(1, sizeof(struct exa_context));
   if (!exa)
      return NULL;

   pExa = exaDriverAlloc();
   if (!pExa) {
      goto out_err;
   }

   memset(pExa, 0, sizeof(*pExa));

   pExa->exa_major         = 2;
   pExa->exa_minor         = 2;
   pExa->memoryBase        = 0;
   pExa->memorySize        = 0;
   pExa->offScreenBase     = 0;
   pExa->pixmapOffsetAlign = 0;
   pExa->pixmapPitchAlign  = 1;
   pExa->flags             = EXA_OFFSCREEN_PIXMAPS | EXA_HANDLES_PIXMAPS;
#ifdef EXA_SUPPORTS_PREPARE_AUX
   pExa->flags            |= EXA_SUPPORTS_PREPARE_AUX;
#endif
#ifdef EXA_MIXED_PIXMAPS
   pExa->flags            |= EXA_MIXED_PIXMAPS;
#endif
   pExa->maxX              = 8191; /* FIXME */
   pExa->maxY              = 8191; /* FIXME */

   pExa->WaitMarker         = ExaWaitMarker;
   pExa->MarkSync           = ExaMarkSync;
   pExa->PrepareSolid       = ExaPrepareSolid;
   pExa->Solid              = ExaSolid;
   pExa->DoneSolid          = ExaDone;
   pExa->PrepareCopy        = ExaPrepareCopy;
   pExa->Copy               = ExaCopy;
   pExa->DoneCopy           = ExaDone;
   pExa->CheckComposite     = ExaCheckComposite;
   pExa->PrepareComposite   = ExaPrepareComposite;
   pExa->Composite          = ExaComposite;
   pExa->DoneComposite      = ExaDoneComposite;
   pExa->PixmapIsOffscreen  = ExaPixmapIsOffscreen;
   pExa->DownloadFromScreen = ExaDownloadFromScreen;
   pExa->UploadToScreen     = ExaUploadToScreen;
   pExa->PrepareAccess      = ExaPrepareAccess;
   pExa->FinishAccess       = ExaFinishAccess;
   pExa->CreatePixmap       = ExaCreatePixmap;
   pExa->DestroyPixmap      = ExaDestroyPixmap;
   pExa->ModifyPixmapHeader = ExaModifyPixmapHeader;

   if (!exaDriverInit(pScrn->pScreen, pExa)) {
      goto out_err;
   }

   exa->scrn = ms->screen;
   exa->pipe = ms->api->create_context(ms->api, exa->scrn);
   /* Share context with DRI */
   ms->ctx = exa->pipe;

   exa->renderer = renderer_create(exa->pipe);

   return (void *)exa;

out_err:
   xorg_exa_close(pScrn);

   return NULL;
}

struct pipe_surface *
xorg_gpu_surface(struct pipe_screen *scrn, struct exa_pixmap_priv *priv)
{
   return scrn->get_tex_surface(scrn, priv->tex, 0, 0, 0,
                                PIPE_BUFFER_USAGE_GPU_READ |
                                PIPE_BUFFER_USAGE_GPU_WRITE);

}

void xorg_exa_flush(struct exa_context *exa, uint pipeFlushFlags,
                    struct pipe_fence_handle **fence)
{
   exa->pipe->flush(exa->pipe, pipeFlushFlags, fence);
}

void xorg_exa_finish(struct exa_context *exa)
{
   struct pipe_fence_handle *fence = NULL;

   xorg_exa_flush(exa, PIPE_FLUSH_RENDER_CACHE, &fence);

   exa->pipe->screen->fence_finish(exa->pipe->screen, fence, 0);
   exa->pipe->screen->fence_reference(exa->pipe->screen, &fence, NULL);
}