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Add a batched scheduler delegate call for animated prop updates - #58773

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bartlomiejbloniarz wants to merge 2 commits into
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export-D122570617

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Summary:
The animation backend hands its synchronous updates to the platform one view at a time. This adds UIManager::synchronouslyUpdateAnimatedProps and a matching SchedulerDelegate call that receive a whole frame's updates at once, continuing #56771. The backend uses it when optimizedAnimatedPropUpdates is on. The default delegate implementation forwards to the existing per-view update, so platforms that don't implement it are unaffected.

Changelog:

[General] [Changed] - Add a batched scheduler delegate call for animated prop updates behind optimizedAnimatedPropUpdates

Differential Revision: D122570617

Bartlomiej Bloniarz added 2 commits September 30, 2026 07:34
… animates layout

Summary:
The shared animation backend decided per surface whether a frame's animated props go through a shadow tree commit or straight to the mounted views. As soon as one view animated a layout prop, every animated view on that surface went through the commit path for the whole animation, including views that only animate `transform` or `opacity`. Besides the extra commit work, on Android this moved those views from `updatePropsSynchronously` to regular mounts. There the synchronous mount props cache (`overrideBySynchronousMountPropsAtMountingAndroid`) replaced the incoming transform with its last synchronously written value, so the view froze while the other view's layout animation ran and jumped when it ended.

The decision is now made per view. `SurfaceUpdates` holds a surface's mutations keyed by view tag, and `applySurfaceUpdates` splits them into views with layout updates, which go through `commitUpdates`, and the rest, which are applied synchronously. `AnimationMutation` and `AnimationMutations` move to `AnimationMutation.h`, still included by `AnimationBackend.h`. `AnimatedPropsRegistry::update` reads the frame's batches instead of the merged per-surface map.

## Changelog:

[General] [Fixed] - A view animating only non-layout props on the shared animation backend no longer freezes while another view on the surface animates a layout prop

Differential Revision: D122570616
Summary:
The animation backend hands its synchronous updates to the platform one view at a time. This adds `UIManager::synchronouslyUpdateAnimatedProps` and a matching `SchedulerDelegate` call that receive a whole frame's updates at once, continuing #56771. The backend uses it when `optimizedAnimatedPropUpdates` is on. The default delegate implementation forwards to the existing per-view update, so platforms that don't implement it are unaffected.

## Changelog:

[General] [Changed] - Add a batched scheduler delegate call for animated prop updates behind `optimizedAnimatedPropUpdates`

Differential Revision: D122570617
@meta-cla meta-cla Bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Sep 30, 2026
@facebook-github-tools facebook-github-tools Bot added p: Software Mansion Partner: Software Mansion Partner p: Facebook Partner: Facebook labels Sep 30, 2026
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meta-codesync Bot commented Sep 30, 2026

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@bartlomiejbloniarz has exported this pull request. If you are a Meta employee, you can view the originating Diff in D122570617.

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