Why Vulkan?

• Speed: Vulkan lowers draw call cost compared to GL
• Speed: Parallelize vkCommandBuffer prep and dispatch
• Stability: Vulkan ICD separately revable on Android (eventually)

Vulkan Port TL;DR

• Vulkan’s explicit model is incompatible with Chrome commandbuffer
• So move rasterization and compositing into GPU Viz process
• Couple rasterization and compositing more tightly to the GPU for improved performance.

Components

OOP-D

OOP-R

SkiaRenderer

SharedImage & Vulkan

Status

Perf

• CPU utilization currently at parity between SkiaRenderer and GLRenderer
• More optimizations planned

Future Work

• Launch more
• SkDDL recording optimizations
• Compositor Delegation to overlays
• Parallel recording of SkDDL from RasterInterface
• Skia/Metal, Skia/DX?
• ?