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

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@bartlomiejbloniarz bartlomiejbloniarz commented Sep 30, 2026 •

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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, and that flag's description now only promises what is implemented. The default SchedulerDelegate implementation forwards to the existing per-view update, so platforms that don't override it are unaffected. UIManagerDelegate gains a required method, implemented by Scheduler.

Changelog:

[Internal]

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

meta-codesync Bot pushed a commit that referenced this pull request Oct 2, 2026
Summary:
Pull Request resolved: #58773

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 `SchedulerDelegate` implementation forwards to the existing per-view update, so platforms that don't override it are unaffected. `UIManagerDelegate` gains a required method, implemented by `Scheduler`.

## Changelog:

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

Differential Revision: D122570617
@meta-codesync
meta-codesync Bot force-pushed the export-D122570617 branch from da4a186 to b137d36 Compare October 2, 2026 12:05
@meta-codesync meta-codesync Bot changed the title Add a batched scheduler delegate call for animated prop updates Add a batched scheduler delegate call for animated prop updates (#58773) Oct 2, 2026
meta-codesync Bot pushed a commit that referenced this pull request Oct 2, 2026
Summary:
Pull Request resolved: #58773

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 `SchedulerDelegate` implementation forwards to the existing per-view update, so platforms that don't override it are unaffected. `UIManagerDelegate` gains a required method, implemented by `Scheduler`.

## Changelog:

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

Differential Revision: D122570617
… animates layout (#58772)

Summary:
Pull Request resolved: #58772

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. `applySurfaceUpdates` splits a surface's mutations, keyed by view tag, into views with layout updates, which go through `commitUpdates`, and the rest, which are applied synchronously. Views with layout updates are also written synchronously, as the non-shared Animated path already does, so a view that starts animating a layout prop while animating `opacity` doesn't freeze its opacity behind the cache either. `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. When the same view receives several mutations in one frame, they are merged, so the mounted view and the registry stay in sync. Raw animated props are now merged per key, like the animation drivers merge them, instead of with merge-patch, which dropped `null` values meant to reset a prop. `RawProps::getDynamic` exposes a dynamic source without copying it.

## Changelog:

[General] [Fixed] - Non-layout props animated on the shared animation backend no longer freeze while the same view or another view on the surface animates a layout prop

Differential Revision: D122570616
meta-codesync Bot pushed a commit that referenced this pull request Oct 2, 2026
Summary:
Pull Request resolved: #58773

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, and that flag's description now only promises what is implemented. The default `SchedulerDelegate` implementation forwards to the existing per-view update, so platforms that don't override it are unaffected. `UIManagerDelegate` gains a required method, implemented by `Scheduler`.

## Changelog:

[Internal]

Differential Revision: D122570617
meta-codesync Bot pushed a commit that referenced this pull request Oct 2, 2026
Summary:
Pull Request resolved: #58773

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, and that flag's description now only promises what is implemented. The default `SchedulerDelegate` implementation forwards to the existing per-view update, so platforms that don't override it are unaffected. `UIManagerDelegate` gains a required method, implemented by `Scheduler`.

## Changelog:

[Internal]

Differential Revision: D122570617
@meta-codesync
meta-codesync Bot force-pushed the export-D122570617 branch from b137d36 to 10dfe1d Compare October 2, 2026 13:59
Summary:
Pull Request resolved: #58773

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, and that flag's description now only promises what is implemented. The default `SchedulerDelegate` implementation forwards to the existing per-view update, so platforms that don't override it are unaffected. `UIManagerDelegate` gains a required method, implemented by `Scheduler`.

## Changelog:

[Internal]

Differential Revision: D122570617
@meta-codesync
meta-codesync Bot force-pushed the export-D122570617 branch from 10dfe1d to e572af4 Compare October 2, 2026 14:04

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