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

Issue 2196583002: Paint local background colors onto foreground layer. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rename PaintLayerPaintingBackgroundOntoForeground to PaintLayerPaintingRootBackgroundOntoForeground Created 4 years, 4 months ago
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Index: third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp b/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
index 58a6e0af7fa78625423459c75e00e5de63f499e1..62cfb9522e5415d370bb75d48411c80a0bc52ff7 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
@@ -265,6 +265,7 @@ PaintLayerPainter::PaintResult PaintLayerPainter::paintLayerContents(GraphicsCon
bool isPaintingCompositedForeground = paintFlags & PaintLayerPaintingCompositingForegroundPhase;
bool isPaintingCompositedBackground = paintFlags & PaintLayerPaintingCompositingBackgroundPhase;
bool isPaintingOverflowContents = paintFlags & PaintLayerPaintingOverflowContents;
+ bool isPaintingBackgroundOntoForeground = paintFlags & PaintLayerPaintingRootBackgroundOntoForeground;
// Outline always needs to be painted even if we have no visible content. Also,
// the outline is painted in the background phase during composited scrolling.
// If it were painted in the foreground phase, it would move with the scrolled
@@ -381,7 +382,9 @@ PaintLayerPainter::PaintResult PaintLayerPainter::paintLayerContents(GraphicsCon
scopedPaintChunkProperties.emplace(context.getPaintController(), m_paintLayer, properties);
}
- bool shouldPaintBackground = isPaintingCompositedBackground && shouldPaintContent && !selectionOnly;
+ bool shouldPaintBackground = shouldPaintContent && !selectionOnly
+ && ((isPaintingBackgroundOntoForeground && isPaintingCompositedForeground)
+ || isPaintingCompositedBackground);
bool shouldPaintNegZOrderList = (isPaintingScrollingContent && isPaintingOverflowContents) || (!isPaintingScrollingContent && isPaintingCompositedBackground);
bool shouldPaintOwnContents = isPaintingCompositedForeground && shouldPaintContent;
bool shouldPaintNormalFlowAndPosZOrderLists = isPaintingCompositedForeground;
@@ -746,7 +749,7 @@ void PaintLayerPainter::paintForegroundForFragments(const PaintLayerFragments& l
paintForegroundForFragmentsWithPhase(PaintPhaseSelection, layerFragments, context, localPaintingInfo, paintFlags, clipState);
} else {
if (!RuntimeEnabledFeatures::paintOptimizationsEnabled() || m_paintLayer.needsPaintPhaseDescendantBlockBackgrounds())
- paintForegroundForFragmentsWithPhase(PaintPhaseDescendantBlockBackgroundsOnly, layerFragments, context, localPaintingInfo, paintFlags, clipState);
+ paintForegroundForFragmentsWithPhase(PaintPhaseDescendantBlockBackgroundsOnly, layerFragments, context, localPaintingInfo, paintFlags & ~PaintLayerPaintingRootBackgroundOntoForeground, clipState);
if (!RuntimeEnabledFeatures::paintOptimizationsEnabled() || m_paintLayer.needsPaintPhaseFloat())
paintForegroundForFragmentsWithPhase(PaintPhaseFloat, layerFragments, context, localPaintingInfo, paintFlags, clipState);
paintForegroundForFragmentsWithPhase(PaintPhaseForeground, layerFragments, context, localPaintingInfo, paintFlags, clipState);

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