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EXA: Avoid some fallbacks in exaCopyNtoN. 

In some cases we can still do the copying in hardware even if the
dimensions of the pixmaps are out of range. This is true when the boxes
that we're to copy are all in the card's range.
This commit is contained in:
Tilman Sauerbeck 2008-04-16 16:20:19 +02:00
parent dc10f0a0e2
commit 886af8f384
1 changed files with 26 additions and 6 deletions
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32
exa/exa_accel.c
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@ -527,16 +527,36 @@ exaCopyNtoN (DrawablePtr pSrcDrawable,
pDstExaPixmap = ExaGetPixmapPriv (pDstPixmap);
/* Check whether the accelerator can use this pixmap.
* FIXME: If it cannot, use temporary pixmaps so that the drawing
* happens within limits.
* If the pitch of the pixmaps is out of range, there's nothing
* we can do but fall back to software rendering.
*/
if (pSrcExaPixmap->accel_blocked || pDstExaPixmap->accel_blocked)
{
if (pSrcExaPixmap->accel_blocked & EXA_RANGE_PITCH ||
pDstExaPixmap->accel_blocked & EXA_RANGE_PITCH)
goto fallback;
} else {
exaDoMigration (pixmaps, 2, TRUE);
/* If the width or the height of either of the pixmaps
* is out of range, check whether the boxes are actually out of the
* addressable range as well. If they aren't, we can still do
* the copying in hardware.
*/
if (pSrcExaPixmap->accel_blocked || pDstExaPixmap->accel_blocked) {
int i;
for (i = 0; i < nbox; i++) {
/* src */
if ((pbox[i].x2 + dx + src_off_x) >= pExaScr->info->maxX ||
(pbox[i].y2 + dy + src_off_y) >= pExaScr->info->maxY)
goto fallback;
/* dst */
if ((pbox[i].x2 + dst_off_x) >= pExaScr->info->maxX ||
(pbox[i].y2 + dst_off_y) >= pExaScr->info->maxY)
goto fallback;
}
}
exaDoMigration (pixmaps, 2, TRUE);
/* Mixed directions must be handled specially if the card is lame */
if ((pExaScr->info->flags & EXA_TWO_BITBLT_DIRECTIONS) &&
reverse != upsidedown) {