[Webkit-unassigned] [Bug 21538] New: Transitions between apparently matching transform values don't always work

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=21538

           Summary: Transitions between apparently matching transform values
                    don't always work
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: simon.fraser at apple.com


Sometimes, transitions between different values of -webkit-transform don't
work, even when they appear that they should.

The problem is that the TransformOperations blendFunc() is changing the
transform ops list out from under us; it is inserting identity operations in
place of other operations that happen to be identity (like "rotate(0)").
Because of this, the transform operation lists in the old and new states no
longer match by type, and the transition fails to run.


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