tree 31806f070bd84442a82febed9be6e19f030d11ec
parent 3be16fbe785436743f90ff3785c5413cad7e427d
author Claire Chambers <clchambers@microsoft.com> 1701219351 -0800
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1701220267 -0800

[CompositeClipPathAnimation] Allow worklet animations to avoid unnecessary frames

This change adds an additional function to PaintWorkletInput that allows for the paint worklet to avoid being invalidated if the value is not changed. This fixes an issue where composited animations with step timing functions would produce too many frames, creating a perf regression.

This is specifically done on the PaintWorkletInput level as opposed to the AnimatedPaintWorkletTracker level because composited clip path animations (and soon composited bgcolor animations) have their timing functions evaluated within the paint worklet.

This change only applies to clip path animations, however, this framework can be used for all derivations of PaintWorkletInput.

Bug: 1464962

Change-Id: I4be27a82b88824bf5d4e08f0da9979fd5e85d5ce
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4956102
Reviewed-by: Olga Gerchikov <gerchiko@microsoft.com>
Reviewed-by: Robert Flack <flackr@chromium.org>
Commit-Queue: Claire Chambers <clchambers@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#1230344}