[Webkit-unassigned] [Bug 130556] New: Subpixel rendering: transform: rotate(90, 180, 270) moves square box when the box is positioned on subpixel.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=130556

           Summary: Subpixel rendering: transform: rotate(90, 180, 270)
                    moves square box when the box is positioned on
                    subpixel.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: ASSIGNED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zalan at apple.com
                CC: simon.fraser at apple.com


as the result of flooring at RenderLayer::paintLayerByApplyingTransform() and painting the box with the subpixel adjustment on the rotated context. (in case of 180deg, subpixel adjustment pushes the box upwards)

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