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authorChris Wilson <chris@chris-wilson.co.uk>2014-03-14 13:08:43 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2014-03-14 13:40:55 +0000
commitc64d2572bafeacae25e9b58c8372ce91858c3832 (patch)
tree0c79534b73c4da3bc44f67182bce058fd9b87456 /src/sna/sna_composite.c
parentb61e6398f0cf94d3c483e30c05ceae4a8383d16c (diff)
sna: Allow some leeway when deciding to discard common translations
Under PictFilterNearest, we can ignore fractional translations (not all renderers discard those.) And if we are being approximate, we can loosen our tolerance as well. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'src/sna/sna_composite.c')
-rw-r--r--src/sna/sna_composite.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/sna/sna_composite.c b/src/sna/sna_composite.c
index 74dfc9ed..d34b5172 100644
--- a/src/sna/sna_composite.c
+++ b/src/sna/sna_composite.c
@@ -527,7 +527,9 @@ sna_composite_fb(CARD8 op,
src->filter != PictFilterConvolution &&
(op == PictOpSrc || (op == PictOpOver && !PICT_FORMAT_A(src->format))) &&
(dst->format == src->format || dst->format == alphaless(src->format)) &&
- sna_transform_is_integer_translation(src->transform, &tx, &ty)) {
+ sna_transform_is_imprecise_integer_translation(src->transform, src->filter,
+ dst->polyMode == PolyModePrecise,
+ &tx, &ty)) {
PixmapPtr dst_pixmap = get_drawable_pixmap(dst->pDrawable);
PixmapPtr src_pixmap = get_drawable_pixmap(src->pDrawable);
int16_t sx = src_x + tx - (dst->pDrawable->x + dst_x);