Bug 307554

Summary: [threaded-animations] only opt animations affecting transform into high frame rate on iOS
Product: WebKit Reporter: Antoine Quint <graouts>
Component: AnimationsAssignee: Antoine Quint <graouts>
Status: RESOLVED FIXED    
Severity: Normal CC: graouts, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 307776    

Antoine Quint
Reported 2026-02-11 09:28:28 PST
We have to be wary about which types of remote layer tree animations will be updated at a high frame rate, such as 120Hz on Pro Motion devices. In 307177@main we added a dedicated setting to control whether high frame rate can be used to update animations at all. But even if this setting is enabled, we need to be smart about what to update at a high frame rate. An obvious first step is not opt `opacity` and `filter` animations into high frame rate such that only transform-related animations qualify.
Attachments
Radar WebKit Bug Importer
Comment 1 2026-02-11 09:29:33 PST
Antoine Quint
Comment 2 2026-02-11 09:37:47 PST
EWS
Comment 3 2026-02-11 22:58:38 PST
Committed 307339@main (de8c3e0c5b15): <https://commits.webkit.org/307339@main> Reviewed commits have been landed. Closing PR #58412 and removing active labels.
Note You need to log in before you can comment on or make changes to this bug.