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Bug 928727 - Don't clear before drawing with OPERATOR_SOURCE in DrawTargetCairo, since we know all required pixels will be clear already. r=jrmuizel

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This commit is contained in:
Matt Woodrow 2013-10-22 12:11:30 +02:00
parent 5f2c6517be
commit 1c5137fd7e
1 changed files with 0 additions and 3 deletions
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3
gfx/2d/DrawTargetCairo.cpp
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@ -635,8 +635,6 @@ DrawTargetCairo::DrawPattern(const Pattern& aPattern,
(!IsOperatorBoundByMask(aOptions.mCompositionOp) && !aPathBoundsClip)) {
cairo_push_group_with_content(mContext, CAIRO_CONTENT_COLOR_ALPHA);
ClearSurfaceForUnboundedSource(aOptions.mCompositionOp);
// Don't want operators to be applied twice
cairo_set_operator(mContext, CAIRO_OPERATOR_OVER);
@ -653,7 +651,6 @@ DrawTargetCairo::DrawPattern(const Pattern& aPattern,
cairo_set_operator(mContext, GfxOpToCairoOp(aOptions.mCompositionOp));
cairo_paint_with_alpha(mContext, aOptions.mAlpha);
} else {
ClearSurfaceForUnboundedSource(aOptions.mCompositionOp);
cairo_set_operator(mContext, GfxOpToCairoOp(aOptions.mCompositionOp));
if (aDrawType == DRAW_STROKE) {