Bug 74964

Summary: requestAnimationFrame on Mac fires at 60fps even when drawing is much slower
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: Layout and RenderingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: cmarrin, levin+threading, simon.fraser, thorton, webkit-bug-importer, webkit.review.bot
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch levin: review+

Simon Fraser (smfr)
Reported 2011-12-20 15:19:07 PST
requestAnimationFrame on Mac will queue up notifications on the main thread even when the previous event is still being handled. That results in uneven rAF intervals (slow/fast/fast/fast/slow...) and untruths in framerate reporting.
Attachments
Patch (5.05 KB, patch)
2011-12-20 15:27 PST, Simon Fraser (smfr) 		levin: review+
DetailsFormatted DiffDiff
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Simon Fraser (smfr)
Comment 1 2011-12-20 15:19:38 PST
<rdar://problem/10607416>
Simon Fraser (smfr)
Comment 2 2011-12-20 15:27:25 PST
Created attachment 120098 [details] Patch
Simon Fraser (smfr)
Comment 3 2011-12-20 15:55:50 PST
http://trac.webkit.org/changeset/103361
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