third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp - Issue 2509203002: Only promote opaque scrollers which are stacking contexts.

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Unified Diff: third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

Issue 2509203002: Only promote opaque scrollers which are stacking contexts. (Closed)

Patch Set: Add contain paint to local equivalent background invalidation test. Created 4 years, 1 month ago

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Index: third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

diff --git a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

index 39afec388f4d7474c38c75129680c3a7ad0b2719..93f5f1df5cff43b0fa4ec238d701200a5774c2c9 100644

--- a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

+++ b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

@@ -1717,6 +1717,7 @@ static bool layerNeedsCompositedScrolling(

// transforms are also integer.

bool backgroundSupportsLCDText =

RuntimeEnabledFeatures::compositeOpaqueScrollersEnabled() &&

+ layer->layoutObject()->style()->isStackingContext() &&

layer->canPaintBackgroundOntoScrollingContentsLayer() &&

layer->backgroundIsKnownToBeOpaqueInRect(

toLayoutBox(layer->layoutObject())->paddingBoxRect()) &&