[Webkit-unassigned] [Bug 220856] New: TransformationMatrix::Recompose() and Decompose() incorrectly transpose rotation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220856

            Bug ID: 220856
           Summary: TransformationMatrix::Recompose() and Decompose()
                    incorrectly transpose rotation
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Animations
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ifernandez at igalia.com
                CC: dino at apple.com, graouts at apple.com

The computation of quaternions during matrix decomposition looks like it's based off of the matrix transpose. The matrix data is actually column major order but the quaternion operations seem to assume row major order.

More info in the equivalent chromium bug:
https://bugs.chromium.org/p/chromium/issues/detail?id=929841

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