third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp - Issue 2346883003: Only paint the background onto the scrolling contents layer if we have a scrolling contents layer.

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Unified Diff: third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

Issue 2346883003: Only paint the background onto the scrolling contents layer if we have a scrolling contents layer. (Closed)

Patch Set: CompositedLayerMappingTest.BackgroundPaintedIntoGraphicsLayerIfNotCompositedScrolling Created 4 years, 3 months ago

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Index: third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

diff --git a/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp b/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

index 2195dd2dd6621e590f95d99727aba23516cab2d1..020d8b1ea568f0f05eab043b87de04de511ba58c 100644

--- a/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

+++ b/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

@@ -299,7 +299,9 @@ void CompositedLayerMapping::updateIsRootForIsolatedGroup()

void CompositedLayerMapping::updateBackgroundPaintsOntoScrollingContentsLayer()

{

- bool shouldPaintOntoScrollingContentsLayer = m_owningLayer.shouldPaintBackgroundOntoScrollingContentsLayer();

+ bool shouldPaintOntoScrollingContentsLayer =

+ m_owningLayer.canPaintBackgroundOntoScrollingContentsLayer()

+ && m_owningLayer.needsCompositedScrolling();

chrishtr 2016/09/15 20:15:47 It's PaintLayerScrollableArea::usesCompositedScrol

flackr 2016/09/15 20:28:37 Done. I can add it, but I shouldn't need to check

if (shouldPaintOntoScrollingContentsLayer != backgroundPaintsOntoScrollingContentsLayer()) {

m_backgroundPaintsOntoScrollingContentsLayer = shouldPaintOntoScrollingContentsLayer;

// If the background is no longer painted onto the scrolling contents