[Webkit-unassigned] [Bug 244915] New: TextureMapperGL::beginRoundedRectClip should use TransformationMatrix::mapQuad instead of TransformationMatrix::projectQuad

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=244915

            Bug ID: 244915
           Summary: TextureMapperGL::beginRoundedRectClip should use
                    TransformationMatrix::mapQuad instead of
                    TransformationMatrix::projectQuad
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Hironori.Fujii at sony.com

TextureMapperGL::beginRoundedRectClip should use TransformationMatrix::mapQuad instead of TransformationMatrix::projectQuad

TextureMapperGL::beginRoundedRectClip and TextureMapperGL::beginScissorClip are using projectQuad.
But, projectQuad is used mainly for hit testing by using a inversed matrix.
projectQuad produces the same results with mapQuad if the transformation matrix has not z-axis transformation.

I think there is no actual problem for beginRoundedRectClip and beginScissorClip to use projectQuad.
But, it should be mapQuad.

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