[Webkit-unassigned] [Bug 74229] New: background-image transitions trigger between equivalent images

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=74229

           Summary: background-image transitions trigger between
                    equivalent images
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: timothy_horton at apple.com


When testing equality for implicit animations, we're not testing equivalence of StyleImages, we're testing pointer equality. This isn't useful and ends up causing a ton of extra implicit animations which needn't happen.

This is especially visible on YouTube, which has -webkit-transition: all set, and causes excessive loads there.

<rdar://problem/10558627>

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