Chromium Graphics // Chrome GPU

Contacts

graphics-dev@chromium.org is the best way to get in touch with the folks knowledgeable about the Chromium graphics stack.

Starter Tasks

Small to medium sized clean up task meta list. Please ask on specific bugs if you want to start working on it and needs more guidance.

Technical Info

Start with this overview of GPU accelerated compositing in Chrome, which includes an overview of the original non-accelerated path.

For current status of feature development, see the GPU architecture roadmap.

To suggest and vote on presentation topics, see Compositor/GPU/Graphics talks you want to see.

Presentations:

• List of Googler-only presentation slides and videos

• Life of a Pixel

• Surface Aggregation [googler-only video]

• History of the World of Chrome Graphics part 1 [googler-only video]

• Blink Property Trees [googler-only video]

• Compositor Property Trees [googler-only video]

• The compositing stack after Surfaces/Display compositor

• Tile Management [googler-only video and notes]

• Impl-side painting [googler-only video]

• TaskGraphRunner and raster task scheduling [googler-only video and notes]

• Checkerboards: Scheduling Compositor Input and Output [googler-only video and notes]

• Compositor and Display Scheduling [googler-only video and notes]

• Gpu Scheduler [googler-only video and notes]

• Image Decoding [googler-only video and slides]

• Native one-copy texture uploads for ChromeOS

• Tessellated GPU Path Rendering

• Tessellating Edge-AA GPU Path Rendering

• WebGL 2.0 Updates [googler-only presentation]

• Background on color spaces [googler-only video]

• Global Memory Coordination

• The RenderSurfaceLayerList data structure

• OOP-D: Out-of-Process Display Compositor Talk

• Chromium OS - Compositor Pipeline [video]

• Chromium Fast Rounded Corners

Design Docs

• An organized list of design docs

Major design docs:

• Graphics and Skia

• Aura

  Threaded compositing

  Impl-side painting

  Zero-input latency scheduler

  GPU Accelerated Rasterization

  Property trees

  Motivation for property trees: Compositing Corner Cases

  Unified BeginFrame scheduling

More design docs:

• Video playback and the compositor

• RenderText and Chrome UI text drawing

• GPU Command Buffer

• GPU Program Caching

• Surfaces (New delegated rendering)

  Ubercompositor (Old delegated rendering)

• 16 bpp texture support

• Image Filters

• Synchronous compositing for Android WebView

• Partial Texture Updates

• ANGLE WebGL 2 Planning

• Asynchronous GPU Rasterization (Client side of GPU scheduling)

• Color correct rendering support

• PictureImageLayer and Directly Composited Images

• Discardable GPU Memory

• GL Command Buffer Extensions

  • Mailbox Extension

• cc::Surfaces for Videos

• Command Buffer Multi Flush

• Lightweight GPU Sync Points (SyncTokens)

• Gpu Service Scheduler

• Expected Power Savings from Partial Tree Updates

• OOP-D: Out-of-Process Display Compositor

• Viz Hit-testing

• Display Compositing, SkiaRenderer, Skia compositing

• Chrome Windows Direct Composition Explainer

• Windows Video Overlays

• Surface Synchronization API Guide

Infrastructure

• GPU Testing
• Rendering Benchmarks

Other interesting links

• How to get Ganesh / GPU Rasterization
• Rendering Architecture Diagrams
• Blink:
  • Presentation about Blink / Compositor interaction
  • Blink phases of rendering
  • How repaint works
• Presentation on ANGLE architecture and plans
• Debugging Chromium with NVIDIA's Nsight
• Chromium WebView graphics slides
• GPU Triage Guide

Graphics Meetup Waterloo April, 2019

• Roadmap (rjkroege)
• OOP-R (enne)
• OOP-D (kylechar)
• SkiaRenderer (backer)
• Test Infra/Bots (jonross)
• Android WebView (boliu)
• Animations (flackr, no link as it's google internal)
• Angle Status Update (geofflang)
• Project Pastel (nicolascapens)
• Smooth Interactive Animations (majidvp)
• VRR on ChromeOS (dcastagna)