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EXA: Use relevant source region to minimize migration on CopyWindow fallbacks. 

Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Acked-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Michel Dänzer 2009-12-29 09:34:43 +01:00 committed by Keith Packard
parent 39cc110caa
commit aa9ce8ab34
1 changed files with 12 additions and 2 deletions
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14
exa/exa_unaccel.c
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@ -313,8 +313,18 @@ ExaCheckCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
EXA_PRE_FALLBACK(pScreen);
EXA_FALLBACK(("from %p\n", pWin));
/* being both src and dest, src is safest. */
exaPrepareAccess(pDrawable, EXA_PREPARE_SRC);
/* Only need the source bits, the destination region will be overwritten */
if (pExaScr->prepare_access_reg) {
PixmapPtr pPixmap = pScreen->GetWindowPixmap(pWin);
int xoff, yoff;
exaGetDrawableDeltas(&pWin->drawable, pPixmap, &xoff, &yoff);
REGION_TRANSLATE(pScreen, prgnSrc, xoff, yoff);
pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_SRC, prgnSrc);
REGION_TRANSLATE(pScreen, prgnSrc, -xoff, -yoff);
} else
exaPrepareAccess(pDrawable, EXA_PREPARE_SRC);
swap(pExaScr, pScreen, CopyWindow);
pScreen->CopyWindow (pWin, ptOldOrg, prgnSrc);
swap(pExaScr, pScreen, CopyWindow);