aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/exa/exa_unaccel.c
blob: 7e26feb83f01b016d6544c2288155cfa20a2f3e1 (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
/*
 *
 * Copyright © 1999 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#include "exa_priv.h"

#ifdef RENDER
#include "mipict.h"
#endif

/*
 * These functions wrap the low-level fb rendering functions and
 * synchronize framebuffer/accelerated drawing by stalling until
 * the accelerator is idle
 */

/**
 * Calls exaPrepareAccess with EXA_PREPARE_SRC for the tile, if that is the
 * current fill style.
 *
 * Solid doesn't use an extra pixmap source, and Stippled/OpaqueStippled are
 * 1bpp and never in fb, so we don't worry about them.
 * We should worry about them for completeness sake and going forward.
 */
void
exaPrepareAccessGC(GCPtr pGC)
{
    if (pGC->stipple)
        exaPrepareAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);
    if (pGC->fillStyle == FillTiled)
	exaPrepareAccess(&pGC->tile.pixmap->drawable, EXA_PREPARE_SRC);
}

/**
 * Finishes access to the tile in the GC, if used.
 */
void
exaFinishAccessGC(GCPtr pGC)
{
    if (pGC->fillStyle == FillTiled)
	exaFinishAccess(&pGC->tile.pixmap->drawable, EXA_PREPARE_SRC);
    if (pGC->stipple)
        exaFinishAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);
}

#if DEBUG_TRACE_FALL
char
exaDrawableLocation(DrawablePtr pDrawable)
{
    return exaDrawableIsOffscreen(pDrawable) ? 's' : 'm';
}
#endif /* DEBUG_TRACE_FALL */

void
ExaCheckFillSpans (DrawablePtr pDrawable, GCPtr pGC, int nspans,
		   DDXPointPtr ppt, int *pwidth, int fSorted)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    exaPrepareAccessGC (pGC);
    pGC->ops->FillSpans (pDrawable, pGC, nspans, ppt, pwidth, fSorted);
    exaFinishAccessGC (pGC);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckSetSpans (DrawablePtr pDrawable, GCPtr pGC, char *psrc,
		 DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    pGC->ops->SetSpans (pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckPutImage (DrawablePtr pDrawable, GCPtr pGC, int depth,
		 int x, int y, int w, int h, int leftPad, int format,
		 char *bits)
{
    ExaPixmapPriv(exaGetDrawablePixmap(pDrawable));

    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
    if (exaGCReadsDestination(pDrawable, pGC->planemask, pGC->fillStyle,
			      pGC->alu, pGC->clientClipType))
	exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    else
	exaPrepareAccessReg (pDrawable, EXA_PREPARE_DEST, pExaPixmap->pDamage ?
			     DamagePendingRegion(pExaPixmap->pDamage) : NULL);
    pGC->ops->PutImage (pDrawable, pGC, depth, x, y, w, h, leftPad, format, bits);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckCopyNtoN (DrawablePtr pSrc, DrawablePtr pDst,  GCPtr pGC,
	     BoxPtr	pbox, int nbox, int dx, int dy, Bool	reverse, 
	     Bool upsidedown, Pixel bitplane, void *closure)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,
		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));
    exaPrepareAccess (pDst, EXA_PREPARE_DEST);
    exaPrepareAccess (pSrc, EXA_PREPARE_SRC);
    /* This will eventually call fbCopyNtoN, with some calculation overhead. */
    while (nbox--) {
	pGC->ops->CopyArea (pSrc, pDst, pGC, pbox->x1 - pSrc->x + dx, pbox->y1 - pSrc->y + dy, 
			pbox->x2 - pbox->x1, pbox->y2 - pbox->y1, pbox->x1 - pDst->x, pbox->y1 - pDst->y);
	pbox++;
    }
    exaFinishAccess (pSrc, EXA_PREPARE_SRC);
    exaFinishAccess (pDst, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

RegionPtr
ExaCheckCopyArea (DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
		 int srcx, int srcy, int w, int h, int dstx, int dsty)
{
    RegionPtr ret;

    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,
		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));
    exaPrepareAccess (pDst, EXA_PREPARE_DEST);
    exaPrepareAccess (pSrc, EXA_PREPARE_SRC);
    ret = pGC->ops->CopyArea (pSrc, pDst, pGC, srcx, srcy, w, h, dstx, dsty);
    exaFinishAccess (pSrc, EXA_PREPARE_SRC);
    exaFinishAccess (pDst, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);

    return ret;
}

RegionPtr
ExaCheckCopyPlane (DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
		  int srcx, int srcy, int w, int h, int dstx, int dsty,
		  unsigned long bitPlane)
{
    RegionPtr ret;

    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,
		  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));
    exaPrepareAccess (pDst, EXA_PREPARE_DEST);
    exaPrepareAccess (pSrc, EXA_PREPARE_SRC);
    ret = pGC->ops->CopyPlane (pSrc, pDst, pGC, srcx, srcy, w, h, dstx, dsty,
		       bitPlane);
    exaFinishAccess (pSrc, EXA_PREPARE_SRC);
    exaFinishAccess (pDst, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);

    return ret;
}

void
ExaCheckPolyPoint (DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
		  DDXPointPtr pptInit)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    pGC->ops->PolyPoint (pDrawable, pGC, mode, npt, pptInit);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckPolylines (DrawablePtr pDrawable, GCPtr pGC,
		  int mode, int npt, DDXPointPtr ppt)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c), width %d, mode %d, count %d\n",
		  pDrawable, exaDrawableLocation(pDrawable),
		  pGC->lineWidth, mode, npt));

    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    exaPrepareAccessGC (pGC);
    pGC->ops->Polylines (pDrawable, pGC, mode, npt, ppt);
    exaFinishAccessGC (pGC);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckPolySegment (DrawablePtr pDrawable, GCPtr pGC,
		    int nsegInit, xSegment *pSegInit)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c) width %d, count %d\n", pDrawable,
		  exaDrawableLocation(pDrawable), pGC->lineWidth, nsegInit));

    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    exaPrepareAccessGC (pGC);
    pGC->ops->PolySegment (pDrawable, pGC, nsegInit, pSegInit);
    exaFinishAccessGC (pGC);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckPolyArc (DrawablePtr pDrawable, GCPtr pGC,
		int narcs, xArc *pArcs)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    exaPrepareAccessGC (pGC);
    pGC->ops->PolyArc (pDrawable, pGC, narcs, pArcs);
    exaFinishAccessGC (pGC);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckPolyFillRect (DrawablePtr pDrawable, GCPtr pGC,
		     int nrect, xRectangle *prect)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));

    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    exaPrepareAccessGC (pGC);
    pGC->ops->PolyFillRect (pDrawable, pGC, nrect, prect);
    exaFinishAccessGC (pGC);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckImageGlyphBlt (DrawablePtr pDrawable, GCPtr pGC,
		      int x, int y, unsigned int nglyph,
		      CharInfoPtr *ppci, pointer pglyphBase)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c)\n", pDrawable,
		  exaDrawableLocation(pDrawable)));
    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    exaPrepareAccessGC (pGC);
    pGC->ops->ImageGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);
    exaFinishAccessGC (pGC);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckPolyGlyphBlt (DrawablePtr pDrawable, GCPtr pGC,
		     int x, int y, unsigned int nglyph,
		     CharInfoPtr *ppci, pointer pglyphBase)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("to %p (%c), style %d alu %d\n", pDrawable,
		  exaDrawableLocation(pDrawable), pGC->fillStyle, pGC->alu));
    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    exaPrepareAccessGC (pGC);
    pGC->ops->PolyGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);
    exaFinishAccessGC (pGC);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckPushPixels (GCPtr pGC, PixmapPtr pBitmap,
		   DrawablePtr pDrawable,
		   int w, int h, int x, int y)
{
    EXA_GC_PROLOGUE(pGC);
    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pBitmap, pDrawable,
		  exaDrawableLocation(&pBitmap->drawable),
		  exaDrawableLocation(pDrawable)));
    exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
    exaPrepareAccess (&pBitmap->drawable, EXA_PREPARE_SRC);
    exaPrepareAccessGC (pGC);
    pGC->ops->PushPixels (pGC, pBitmap, pDrawable, w, h, x, y);
    exaFinishAccessGC (pGC);
    exaFinishAccess (&pBitmap->drawable, EXA_PREPARE_SRC);
    exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
    EXA_GC_EPILOGUE(pGC);
}

void
ExaCheckCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
{
    DrawablePtr pDrawable = &pWin->drawable;
    ScreenPtr pScreen = pDrawable->pScreen;
    ExaScreenPriv(pScreen);
    EXA_FALLBACK(("from %p\n", pWin));

    /* being both src and dest, src is safest. */
    exaPrepareAccess(pDrawable, EXA_PREPARE_SRC);
    swap(pExaScr, pScreen, CopyWindow);
    pScreen->CopyWindow (pWin, ptOldOrg, prgnSrc);
    swap(pExaScr, pScreen, CopyWindow);
    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);
}

void
ExaCheckGetImage(DrawablePtr pDrawable, int x, int y, int w, int h,
		unsigned int format, unsigned long planeMask, char *d)
{
    BoxRec Box;
    RegionRec Reg;
    int xoff, yoff;
    ScreenPtr pScreen = pDrawable->pScreen;
    PixmapPtr pPix = exaGetDrawablePixmap (pDrawable);
    ExaScreenPriv(pScreen);

    EXA_FALLBACK(("from %p (%c)\n", pDrawable,
		  exaDrawableLocation(pDrawable)));

    exaGetDrawableDeltas(pDrawable, pPix, &xoff, &yoff);

    Box.x1 = pDrawable->y + x + xoff;
    Box.y1 = pDrawable->y + y + yoff;
    Box.x2 = Box.x1 + w;
    Box.y2 = Box.y1 + h;

    REGION_INIT(pScreen, &Reg, &Box, 1);

    exaPrepareAccessReg (pDrawable, EXA_PREPARE_SRC, &Reg);
    swap(pExaScr, pScreen, GetImage);
    pScreen->GetImage (pDrawable, x, y, w, h, format, planeMask, d);
    swap(pExaScr, pScreen, GetImage);
    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);
}

void
ExaCheckGetSpans (DrawablePtr pDrawable,
		 int wMax,
		 DDXPointPtr ppt,
		 int *pwidth,
		 int nspans,
		 char *pdstStart)
{
    ScreenPtr pScreen = pDrawable->pScreen;
    ExaScreenPriv(pScreen);

    EXA_FALLBACK(("from %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
    exaPrepareAccess (pDrawable, EXA_PREPARE_SRC);
    swap(pExaScr, pScreen, GetSpans);
    pScreen->GetSpans (pDrawable, wMax, ppt, pwidth, nspans, pdstStart);
    swap(pExaScr, pScreen, GetSpans);
    exaFinishAccess (pDrawable, EXA_PREPARE_SRC);
}

void
ExaCheckComposite (CARD8      op,
                   PicturePtr pSrc,
                   PicturePtr pMask,
                   PicturePtr pDst,
                   INT16      xSrc,
                   INT16      ySrc,
                   INT16      xMask,
                   INT16      yMask,
                   INT16      xDst,
                   INT16      yDst,
                   CARD16     width,
                   CARD16     height)
{
    ScreenPtr pScreen = pDst->pDrawable->pScreen;
#ifdef RENDER
    PictureScreenPtr	ps = GetPictureScreen(pScreen);
#endif /* RENDER */
    ExaScreenPriv(pScreen);
    RegionRec region;
    int xoff, yoff;

    REGION_NULL(pScreen, &region);

    /* We need to prepare access to any separate alpha maps first, in case the
     * driver doesn't support EXA_PREPARE_AUX*, in which case EXA_PREPARE_SRC
     * may be used for moving them out.
     */
    if (pSrc->alphaMap && pSrc->alphaMap->pDrawable)
	exaPrepareAccess(pSrc->alphaMap->pDrawable, EXA_PREPARE_AUX_SRC);
    if (pMask && pMask->alphaMap && pMask->alphaMap->pDrawable)
	exaPrepareAccess(pMask->alphaMap->pDrawable, EXA_PREPARE_AUX_MASK);

    if (!exaOpReadsDestination(op)) {
	if (!miComputeCompositeRegion (&region, pSrc, pMask, pDst,
				       xSrc, ySrc, xMask, yMask, xDst, yDst,
				       width, height))
	    goto skip;

	exaGetDrawableDeltas (pDst->pDrawable,
			      exaGetDrawablePixmap(pDst->pDrawable),
			      &xoff, &yoff);

	REGION_TRANSLATE(pScreen, &region, xoff, yoff);

	if (pDst->alphaMap && pDst->alphaMap->pDrawable)
	    exaPrepareAccessReg(pDst->alphaMap->pDrawable, EXA_PREPARE_AUX_DEST,
				&region);

	exaPrepareAccessReg (pDst->pDrawable, EXA_PREPARE_DEST, &region);
    } else {
	if (pDst->alphaMap && pDst->alphaMap->pDrawable)
	    exaPrepareAccess(pDst->alphaMap->pDrawable, EXA_PREPARE_AUX_DEST);

	exaPrepareAccess (pDst->pDrawable, EXA_PREPARE_DEST);
    }

    EXA_FALLBACK(("from picts %p/%p to pict %p\n",
		 pSrc, pMask, pDst));

    if (pSrc->pDrawable != NULL)
	exaPrepareAccess (pSrc->pDrawable, EXA_PREPARE_SRC);
    if (pMask && pMask->pDrawable != NULL)
	exaPrepareAccess (pMask->pDrawable, EXA_PREPARE_MASK);
#ifdef RENDER
    swap(pExaScr, ps, Composite);
    ps->Composite (op,
                 pSrc,
                 pMask,
                 pDst,
                 xSrc,
                 ySrc,
                 xMask,
                 yMask,
                 xDst,
                 yDst,
                 width,
                 height);
    swap(pExaScr, ps, Composite);
#endif /* RENDER */
    if (pMask && pMask->pDrawable != NULL)
	exaFinishAccess (pMask->pDrawable, EXA_PREPARE_MASK);
    if (pSrc->pDrawable != NULL)
	exaFinishAccess (pSrc->pDrawable, EXA_PREPARE_SRC);
    exaFinishAccess (pDst->pDrawable, EXA_PREPARE_DEST);
    if (pDst->alphaMap && pDst->alphaMap->pDrawable)
	exaFinishAccess(pDst->alphaMap->pDrawable, EXA_PREPARE_AUX_DEST);

skip:
    if (pSrc->alphaMap && pSrc->alphaMap->pDrawable)
	exaFinishAccess(pSrc->alphaMap->pDrawable, EXA_PREPARE_AUX_SRC);
    if (pMask && pMask->alphaMap && pMask->alphaMap->pDrawable)
	exaFinishAccess(pMask->alphaMap->pDrawable, EXA_PREPARE_AUX_MASK);

    REGION_UNINIT(pScreen, &region);
}

void
ExaCheckAddTraps (PicturePtr	pPicture,
		  INT16		x_off,
		  INT16		y_off,
		  int		ntrap,
		  xTrap		*traps)
{
    ScreenPtr pScreen = pPicture->pDrawable->pScreen;
#ifdef RENDER
    PictureScreenPtr	ps = GetPictureScreen(pScreen);
#endif /* RENDER */
    ExaScreenPriv(pScreen);

    EXA_FALLBACK(("to pict %p (%c)\n",
		  exaDrawableLocation(pPicture->pDrawable)));
    exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST);
#ifdef RENDER
    swap(pExaScr, ps, AddTraps);
    ps->AddTraps (pPicture, x_off, y_off, ntrap, traps);
    swap(pExaScr, ps, AddTraps);
#endif /* RENDER */
    exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST);
}

/**
 * Gets the 0,0 pixel of a pixmap.  Used for doing solid fills of tiled pixmaps
 * that happen to be 1x1.  Pixmap must be at least 8bpp.
 */
CARD32
exaGetPixmapFirstPixel (PixmapPtr pPixmap)
{
    switch (pPixmap->drawable.bitsPerPixel) {
    case 32:
	{
	    CARD32 pixel;

	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,
						ZPixmap, ~0, (char*)&pixel);
	    return pixel;
	}
    case 16:
	{
	    CARD16 pixel;

	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,
						ZPixmap, ~0, (char*)&pixel);
	    return pixel;
	}
    case 8:
	{
	    CARD8 pixel;

	    pPixmap->drawable.pScreen->GetImage(&pPixmap->drawable, 0, 0, 1, 1,
						ZPixmap, ~0, (char*)&pixel);
	    return pixel;
	}
    default:
	FatalError("%s called for invalid bpp %d\n", __FUNCTION__,
		   pPixmap->drawable.bitsPerPixel);
    }
}