[Webkit-unassigned] [Bug 236019] New: Overlap computations are broken with rotate, translate, scale properties

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236019

            Bug ID: 236019
           Summary: Overlap computations are broken with rotate,
                    translate, scale properties
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Compositing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: simon.fraser at apple.com

Created attachment 450652

  --> https://bugs.webkit.org/attachment.cgi?id=450652&action=review

Testcase

See attached testcase. Gray dots should always overlap the blue.

We must fail to run KeyframeEffect::computeExtentOfTransformAnimation() code for rotate, translate, scale properties.

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