viz::Display::DrawAndSwap
Blink2865 Okt 2025

viz::Display::DrawAndSwap

In Chrome’s rendering pipeline, the Viz service in the GPU process owns a viz::Display object. A Display is responsible for taking aggregated CompositorFrames (produced by the SurfaceAggregator), drawing them using the appropriate renderer (Skia or software) and swapping the resulting buffer to the physical output surface. The method Display::DrawAndSwap(const DrawAndSwapParams& params) performs this work. The display scheduler calls DrawAndSwap for every frame it wants to display. On some platforms such as Lacros, DrawAndSwap uses the root surface size as the display’s size; the note on display size explains that display_->Resize sets current_surface_size_, and DrawAndSwap uses this value to determine whether the current frame needs a resize.

Episoder(392)

blink::PaintArtifactCompositor

blink::PaintArtifactCompositor

turns chunks into compositor layers & updates cc property trees. Consumes the new PaintArtifact and does the layerization and property‑tree updates required for compositor draw. It supports fast paths...

10 Okt 202529min

blink::PaintChunk and blink::DisplayItemList

blink::PaintChunk and blink::DisplayItemList

grouping and content. PaintChunk: groups sequential display items that share the same property‑tree state and cull/visibility; it’s the unit we layerize and invalidate.DisplayItemList: the recorded Sk...

10 Okt 202537min

blink::PaintArtifact

blink::PaintArtifact

the immutable “what to draw” package for this frame. A PaintArtifact is the product of Blink painting: a DisplayItemList plus an ordered vector of PaintChunks. It is immutable post‑creation and design...

10 Okt 202531min

blink::PaintController

blink::PaintController

builds the display list + paint chunks and manages caching. As painters call into GraphicsContext, they also drive a PaintController which groups drawing into display items and paint chunks (each keye...

10 Okt 202529min

blink::GraphicsContext

blink::GraphicsContext

immediate drawing API that records to a display list. Painters for layout objects use GraphicsContext to “draw”—but in modern Blink those calls get recorded into a display list (PaintRecord) backed by...

10 Okt 202544min

blink::TransformPaintPropertyNode / ClipPaintPropertyNode / EffectPaintPropertyNode / ScrollPaintPropertyNode

blink::TransformPaintPropertyNode / ClipPaintPropertyNode / EffectPaintPropertyNode / ScrollPaintPropertyNode

These are the nodes within those four trees. Every piece of painted content (a “paint chunk”) is associated with a tuple of (Transform, Clip, Effect, Scroll) nodes—its PropertyTreeState. This precisel...

10 Okt 202533min

blink::PaintPropertyTreeBuilder

blink::PaintPropertyTreeBuilder

builds/updates paint property trees.Consumes the layout/fragment data and produces the four paint property trees (Transform, Clip, Effect, Scroll) for the current frame. These trees encode coordinate ...

10 Okt 202547min

blink::PrePaintTreeWalk

blink::PrePaintTreeWalk

cross‑frame pre‑paint traversal. Runs in the InPrePaint lifecycle phase. Walks the entire layout tree starting at the root LocalFrameView, updating paint invalidation state and computing the context n...

10 Okt 202531min

Populært innen Teknologi

lydartikler-fra-aftenposten
romkapsel
tomprat-med-gunnar-tjomlid
rss-avskiltet
nasjonal-sikkerhetsmyndighet-nsm
teknisk-sett
energi-og-klima
smart-forklart
elektropodden
rss-impressions-2
shifter
rss-alt-vi-kan
pedagogisk-intelligens
rss-ki-praten
teknologi-og-mennesker
hans-petter-og-co
fornybaren
rss-for-alarmen-gar
rss-snakk-om-sikkerhet
rss-heis