Blink's Rendering: Fragment Tree to Layer Tree Conversion
Blink2865 Sep 2025

Blink's Rendering: Fragment Tree to Layer Tree Conversion

The provided text details Blink's rendering pipeline, specifically focusing on the conversion of the Fragment Tree to the Layer Tree within Chromium's RenderingNG architecture. It explains how layout outputs, captured as an immutable Fragment Tree, are processed through a Pre-Paint phase to build paint property trees (for transforms, clips, effects, and scrolls). Subsequently, the Paint phase generates display items grouped into paint chunks, each associated with a property tree state. Finally, the layerization algorithm (handled by the PaintArtifactCompositor) evaluates these paint chunks, applying merging heuristics and compositing reasons, to create a cc::Layer tree ready for GPU rasterization and display, with CompositorElementIds ensuring efficient synchronization for animations and scrolling.

Episoder(391)

CSS Containing Blocks and Blink Engine Implementation

CSS Containing Blocks and Blink Engine Implementation

This text examines how CSS containing blocks function and how the Blink rendering engine implements these rules within Chromium. It explains that a containing block is the essential rectangular refere...

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Axis-Split Sticky Constraints in Chromium Layout and Compositing

Axis-Split Sticky Constraints in Chromium Layout and Compositing

Chromium is refining its rendering engine to support axis-split sticky constraints, allowing elements to stick to different scroll containers for horizontal and vertical movements. Previously, a singl...

23 Des 202533min

Mastering CSS Sticky Positioning and Scroll Containers

Mastering CSS Sticky Positioning and Scroll Containers

This documentation provides a comprehensive analysis of CSS sticky positioning, a hybrid layout scheme that anchors elements within their nearest scroll container while maintaining their space in the ...

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Blink Paint Property Trees: Construction and Lifecycle Phases

Blink Paint Property Trees: Construction and Lifecycle Phases

The provided text explains the construction and lifecycle of paint property trees within the Blink rendering engine. These structures, which include Transform, Clip, Effect, and Scroll trees, replace ...

20 Des 20251h 1min

Chromium's LayerTreeHostClient: The Compositing Bridge

Chromium's LayerTreeHostClient: The Compositing Bridge

The source provides an extensive overview of the LayerTreeHostClient interface, a crucial component in Chromium's rendering architecture that acts as the bridge between the content engine (like Blink ...

18 Des 202536min

The Definitive Guide to CSS Scroll Snap

The Definitive Guide to CSS Scroll Snap

The source provides a comprehensive technical deep dive into the CSS Scroll Snap Module Level 1, a feature designed to create precise, controlled, and paginated scrolling experiences, such as carousel...

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Paint Artifact Compositor: Blink's Rendering Bridge

Paint Artifact Compositor: Blink's Rendering Bridge

The sources provide a detailed technical explanation of the PaintArtifactCompositor (PAC), a fundamental component of Chrome's modern Blink rendering pipeline known as CompositeAfterPaint (CAP). The P...

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View Transitions Flow

View Transitions Flow

17 Des 202548min

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