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Bug 1062100. Part 3: When layers are flattened, let all the layers contribute opaqueness to the container layer, whatever their animated geometry roots are. r=tn

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--HG--
extra : rebase_source : 255807b178162f62082da0fe2bed2315cf4c0581
This commit is contained in:
Robert O'Callahan 2014-09-17 18:45:47 +12:00
parent 432ccb72bc
commit 241afa85c2
1 changed files with 7 additions and 2 deletions
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9
layout/base/FrameLayerBuilder.cpp
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@ -3546,8 +3546,13 @@ ContainerState::PostprocessRetainedLayers(nsIntRegion* aOpaqueRegionForContainer
continue;
}
// If mFlattenToSingleLayer is true, there isn't going to be any
// async scrolling so we can apply all our opaqueness to the same
// entry, the entry for mContainerAnimatedGeometryRoot.
const nsIFrame* animatedGeometryRootForOpaqueness =
mFlattenToSingleLayer ? mContainerAnimatedGeometryRoot : e->mAnimatedGeometryRoot;
OpaqueRegionEntry* data = FindOpaqueRegionEntry(opaqueRegions,
e->mAnimatedGeometryRoot, e->mFixedPosFrameForLayerData);
animatedGeometryRootForOpaqueness, e->mFixedPosFrameForLayerData);
SetupScrollingMetadata(e);
@ -3567,7 +3572,7 @@ ContainerState::PostprocessRetainedLayers(nsIntRegion* aOpaqueRegionForContainer
e->mLayerContentsVisibleRect.width >= 0 ? &e->mLayerContentsVisibleRect : nullptr);
if (!e->mOpaqueRegion.IsEmpty()) {
const nsIFrame* animatedGeometryRootToCover = e->mAnimatedGeometryRoot;
const nsIFrame* animatedGeometryRootToCover = animatedGeometryRootForOpaqueness;
if (e->mOpaqueForAnimatedGeometryRootParent &&
nsLayoutUtils::GetAnimatedGeometryRootForFrame(e->mAnimatedGeometryRoot->GetParent(),
mContainerAnimatedGeometryRoot)