[Webkit-unassigned] [Bug 121833] New: Not accurate behavior of the requestAnimationFrame API

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=121833

           Summary: Not accurate behavior of the requestAnimationFrame API
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: armbox at gmail.com


While I testing the requestAnimationFrame API. I found small crack on there.

When one changes the contents at the requestAnimatoinFrame callback, it should be displayed, even though there is additional change between the two consecutive requestAnimationFrame callbacks.

So I write the attached test code, which is change the <p> tags contents into "text from requestAnimationFrame" on requestAnimation frame, and after that, within short time I've changed it into "text from setTimeout". In theory, it should display the "text from requestAnimationFrame for all time. But it's flickering or just display the "text from setTimout" always.

Is it a correct behavior? Or did I misunderstand something?


Attached r.html is the test code.

Thanks,
Quho

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