[Webkit-unassigned] [Bug 123664] New: Generated color wheel displays incorrectly (regressed in r155567)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=123664

           Summary: Generated color wheel displays incorrectly (regressed
                    in r155567)
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: graouts at apple.com
                CC: webkit-bug-importer at group.apple.com, fpizlo at apple.com


Created an attachment (id=215807)
 --> (https://bugs.webkit.org/attachment.cgi?id=215807&action=review)
Color wheel test case

The attached test case where we draw a color wheel programmatically using the CanvasRenderingContext2D API renders incorrectly on ToT where it used to work fine. Regressing shows that this rendered as expected as of r155565 and incorrectly with r155567, r155567 was untested but given it's a Windows-specific fix, it's likely that this regressed in http://trac.webkit.org/changeset/155567, a code change introduced to fix https://bugs.webkit.org/show_bug.cgi?id=121141.

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