[Webkit-unassigned] [Bug 215229] Animations invalidate style on every rendering update whether or not they need to

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215229

--- Comment #4 from Antti Koivisto <koivisto at iki.fi> ---
This bug is specific to step timing functions. Rendering updates will tick animations only if DocumentTimeline::m_animationResolutionScheduled bit is set which correctly doesn't happen during accelerated animations.

Step timing functions with transforms try and fail to start accelerated which causes them to repeatedly schedule unnecessary rendering updates.

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