third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp - Issue 2259493004: Fix Compositing of Opaque Scrolling Layers and Add Tests

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

Issue 2259493004: Fix Compositing of Opaque Scrolling Layers and Add Tests (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 4 months 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 459200019d647bf7c82659f05c821a8f2de435c4..e4842698528fe0dc6e49ac6bc9badd926be670a1 100644

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

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

@@ -1501,7 +1501,7 @@ static bool layerNeedsCompositedScrolling(PaintLayerScrollableArea::LCDTextMode

// we should use PaintLayer::shouldPaintBackgroundOntoForeground() because we will not still get

// LCD text unless the conditions there are met. It also unifies logic for scrolling compositing decisions.

bool backgroundSupportsLCDText = RuntimeEnabledFeatures::compositeOpaqueScrollersEnabled()

- && !layer->layoutObject()->style()->visitedDependentColor(CSSPropertyBackgroundColor).hasAlpha();

+ && layer->shouldPaintBackgroundOntoScrollingContentsLayer();

flackr 2016/08/19 03:19:30 You also need to check that the scrolling contents

Stephen Chennney 2016/08/19 17:30:41 Done.

if (mode == PaintLayerScrollableArea::ConsiderLCDText

&& !layer->compositor()->preferCompositingToLCDTextEnabled()

&& !backgroundSupportsLCDText)

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