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EXA: exaAssertNotDirty improvements. 

* Return early if the valid region is empty or the pixmap is pinned.
* Fix loop for several cliprects.
This commit is contained in:
Michel Dänzer 2007-04-29 23:45:48 +02:00
parent d3f8667341
commit e869573b52
1 changed files with 8 additions and 13 deletions
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21
exa/exa_migration.c
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@ -464,12 +464,10 @@ exaAssertNotDirty (PixmapPtr pPixmap)
BoxPtr pBox = REGION_RECTS(pValidReg);
Bool ret = TRUE;
if (pExaPixmap == NULL || pExaPixmap->fb_ptr == NULL)
if (!nbox || exaPixmapIsPinned(pPixmap) || pExaPixmap->fb_ptr == NULL)
return ret;
dst = pExaPixmap->sys_ptr;
dst_pitch = pExaPixmap->sys_pitch;
src = pExaPixmap->fb_ptr;
src_pitch = pExaPixmap->fb_pitch;
cpp = pPixmap->drawable.bitsPerPixel / 8;
@ -486,21 +484,18 @@ exaAssertNotDirty (PixmapPtr pPixmap)
continue;
rowbytes = (pBox->x2 - pBox->x1) * cpp;
src += pBox->y1 * src_pitch + pBox->x1 * cpp;
dst += pBox->y1 * dst_pitch + pBox->x1 * cpp;
src = pExaPixmap->fb_ptr + pBox->y1 * src_pitch + pBox->x1 * cpp;
dst = pExaPixmap->sys_ptr + pBox->y1 * dst_pitch + pBox->x1 * cpp;
for (y = pBox->y2 - pBox->y1; y; y--) {
if (memcmp(dst + pBox->y1 * dst_pitch + pBox->x1 * cpp,
src + pBox->y1 * src_pitch + pBox->x1 * cpp,
(pBox->x2 - pBox->x1) * cpp) != 0) {
for (y = pBox->y1; y < pBox->y2;
y++, src += src_pitch, dst += dst_pitch) {
if (memcmp(dst, src, rowbytes) != 0) {
ret = FALSE;
exaPixmapDirty(pPixmap, pBox->x1, pBox->y1, pBox->x2,
pBox->y2);
break;
}
src += src_pitch;
dst += dst_pitch;
}
src -= pBox->y1 * src_pitch + pBox->x1 * cpp;
dst -= pBox->y1 * dst_pitch + pBox->x1 * cpp;
}
exaFinishAccess(&pPixmap->drawable, EXA_PREPARE_SRC);