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/frameworks/native/services/surfaceflinger/CompositionEngine/src/
DOutput.cpp728 const Region& oldCoveredRegion = in ensureOutputLayerIfVisible() local
753 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; in ensureOutputLayerIfVisible()
754 dirty = (visibleRegion & oldCoveredRegion) | (newExposed - oldExposed); in ensureOutputLayerIfVisible()