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sna: Optimize clears to white 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-06-25 21:12:23 +01:00
parent b77c334a26
commit e033a28bcb
1 changed files with 8 additions and 4 deletions
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12
src/sna/sna_accel.c
View File

@ -1987,8 +1987,9 @@ skip_inplace_map:
assert(!priv->mapped);
if (priv->clear) {
DBG(("%s: applying clear [%08x]\n",
__FUNCTION__, priv->clear_color));
DBG(("%s: applying clear [%08x] size=%dx%d, stride=%d (total=%d)\n",
__FUNCTION__, priv->clear_color, pixmap->drawable.width, pixmap->drawable.height,
pixmap->devKind, pixmap->devKind * pixmap->drawable.height));
if (priv->cpu_bo) {
DBG(("%s: syncing CPU bo\n", __FUNCTION__));
@ -1996,7 +1997,9 @@ skip_inplace_map:
assert(pixmap->devPrivate.ptr == (void *)((unsigned long)priv->cpu_bo->map & ~3));
}
if (priv->clear_color == 0 || pixmap->drawable.bitsPerPixel == 8) {
if (priv->clear_color == 0 ||
pixmap->drawable.bitsPerPixel == 8 ||
priv->clear_color == (1 << pixmap->drawable.bitsPerPixel) - 1) {
memset(pixmap->devPrivate.ptr, priv->clear_color,
pixmap->devKind * pixmap->drawable.height);
} else {
@ -14208,7 +14211,8 @@ sna_get_image_blt(DrawablePtr drawable,
pitch = PixmapBytePad(w, pixmap->drawable.depth);
if (priv->clear_color == 0 ||
pixmap->drawable.bitsPerPixel == 8) {
pixmap->drawable.bitsPerPixel == 8 ||
priv->clear_color == (1U << pixmap->drawable.bitsPerPixel) - 1) {
memset(dst, priv->clear_color, pitch * h);
} else {
pixman_fill((uint32_t *)dst,