View Transition Deep Dive: Lifecycle and Implementation
Blink28619 Nov 2025

View Transition Deep Dive: Lifecycle and Implementation

The sources provide a detailed technical examination of the lifecycle of a View Transition in the Chromium browser engine, outlining the complex coordination across various subsystems like Blink, the compositor (cc), and the Viz service. The process starts with Blink orchestrating the transition by pausing rendering, executing the DOM update, and generating special pseudo-elements that represent the old and new states of transitioning elements. These sources explain how the compositor issues a CopyOutputRequest to the Viz service to capture snapshots of the old content, which are then returned as GPU textures. Finally, the text describes how the compositor uses ElementAnimations to run smooth, GPU-accelerated transitions (like cross-fades) between these captured snapshots before seamlessly swapping to the final, rendered new DOM state and cleaning up the temporary resources.


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