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sna: Discard the redundant clear of the unbounded area if already clear 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-02-04 20:13:07 +00:00
parent b899a4b696
commit a8ed1a02ad
1 changed files with 15 additions and 2 deletions
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17
src/sna/sna_trapezoids.c
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@ -2657,6 +2657,13 @@ choose_span(PicturePtr dst,
return span;
}
static bool
sna_drawable_is_clear(DrawablePtr d)
{
struct sna_pixmap *priv = sna_pixmap(get_drawable_pixmap(d));
return priv && priv->clear && priv->clear_color == 0;
}
static bool
mono_trapezoids_span_converter(CARD8 op, PicturePtr src, PicturePtr dst,
INT16 src_x, INT16 src_y,
@ -2666,6 +2673,7 @@ mono_trapezoids_span_converter(CARD8 op, PicturePtr src, PicturePtr dst,
BoxRec extents;
int16_t dst_x, dst_y;
int16_t dx, dy;
bool was_clear;
int n;
if (NO_SCAN_CONVERTER)
@ -2709,6 +2717,8 @@ mono_trapezoids_span_converter(CARD8 op, PicturePtr src, PicturePtr dst,
if (!mono_init(&mono, 2*ntrap))
return false;
was_clear = sna_drawable_is_clear(dst->pDrawable);
for (n = 0; n < ntrap; n++) {
if (!xTrapezoidValid(&traps[n]))
continue;
@ -2741,7 +2751,7 @@ mono_trapezoids_span_converter(CARD8 op, PicturePtr src, PicturePtr dst,
mono.op.done(mono.sna, &mono.op);
mono_fini(&mono);
if (!operator_is_bounded(op)) {
if (!was_clear && !operator_is_bounded(op)) {
xPointFixed p1, p2;
if (!mono_init(&mono, 2+2*ntrap))
@ -4223,6 +4233,7 @@ mono_triangles_span_converter(CARD8 op, PicturePtr src, PicturePtr dst,
BoxRec extents;
int16_t dst_x, dst_y;
int16_t dx, dy;
bool was_clear;
int n;
mono.sna = to_sna_from_drawable(dst->pDrawable);
@ -4261,6 +4272,8 @@ mono_triangles_span_converter(CARD8 op, PicturePtr src, PicturePtr dst,
src_x + mono.clip.extents.x1 - dst_x - dx,
src_y + mono.clip.extents.y1 - dst_y - dy));
was_clear = sna_drawable_is_clear(dst->pDrawable);
if (mono_init(&mono, 3*count))
return false;
@ -4289,7 +4302,7 @@ mono_triangles_span_converter(CARD8 op, PicturePtr src, PicturePtr dst,
mono.op.done(mono.sna, &mono.op);
}
if (!operator_is_bounded(op)) {
if (!was_clear && !operator_is_bounded(op)) {
xPointFixed p1, p2;
if (!mono_init(&mono, 2+3*count))