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xcb: Check if traps are supported before using them

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This code tried to optimize the clip away by intersecting the boxes with the
clip polygon. However, it also did so when the server didn't support traps.

Fixes: clip-stroke-unbounded clip-fill-nz-unbounded clip-fill-eo-unbounded
clip-fill clip-fill-rule a1-clip-fill-rule clip-group-shapes-circles
clip-intersect clip-nesting clip-operator clip-push-group clip-polygons
clip-shape clip-text clip-twice inverted-clip mask random-clip
rotate-clip-image-surface-paint trap-clip unantialiased-shapes

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2012-09-25 11:34:52 +02:00
parent 0ccbb83eb8
commit b264ae76bd
1 changed files with 2 additions and 1 deletions
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3
src/cairo-xcb-surface-render.c
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@ -3106,7 +3106,8 @@ _clip_and_composite_boxes (cairo_xcb_surface_t *dst,
}
/* Can we reduce drawing through a clip-mask to simply drawing the clip? */
if (extents->clip->path != NULL && extents->is_bounded) {
if (dst->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS &&
extents->clip->path != NULL && extents->is_bounded) {
cairo_polygon_t polygon;
cairo_fill_rule_t fill_rule;
cairo_antialias_t antialias;