Bug 220856

Summary: TransformationMatrix::Recompose() and Decompose() incorrectly transpose rotation
Product: WebKit Reporter: Imanol Fernandez <ifernandez>
Component: AnimationsAssignee: Matt Woodrow <mattwoodrow>
Status: RESOLVED FIXED    
Severity: Normal CC: cdumez, dino, graouts, krit, mrobinson, simon.fraser, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: All   
OS: All   

Imanol Fernandez
Reported 2021-01-22 03:05:45 PST
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
Attachments
Radar WebKit Bug Importer
Comment 1 2021-01-29 03:06:11 PST
Matt Woodrow
Comment 2 2023-08-28 18:03:58 PDT
EWS
Comment 3 2023-08-29 14:45:25 PDT
Committed 267424@main (a959acf1111c): <https://commits.webkit.org/267424@main> Reviewed commits have been landed. Closing PR #17162 and removing active labels.
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