Chromium Compositor流程

cc::Layer tree

PaintLayerCompositor::UpdateIfNeeded()    CompositingInputsUpdater::Update()     CompositingLayerAssigner::Assign()     GraphicsLayerUpdater::Update()          GraphicsLayerTreeBuilder::Rebuild() 

PaintChunksToCcLayer::Convert()

PrePaintTreeWalk::Walk()    PaintPropertyTreeBuider::UpdatePropertiesForSelf()

Graphics Layer Tree

cc Property treecc Layer tree

from layout

Paint

GraphicsLayer Tree

commit

GraphicsLayerDisplayItem/ForeignLayerDisplayItem

to compositor

LayoutObject/PaintLayer tree

LocalFrameView::PushPaintArtifactToCompositor()     PaintArtifactCompositor::Update()

cc property tree

PrePaintBuild Property tree

ParserStyle & Layout

LocalFrameView::PaintTree()    LocalFrameView::PaintGraphicsLayerRecursively()        GraphicsLayer::Paint()            CompositedLayerMapping::PaintContents()                PaintLayerPainter::PaintLayerContents()                    ObjectPainter::Paint()

Property trees

DisplayItemList/PaintChunk list