[Webkit-unassigned] [Bug 222855] New: [GPU Process] Recording transparency layer should reset the alpha of lastDrawingState

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222855

            Bug ID: 222855
           Summary: [GPU Process] Recording transparency layer should
                    reset the alpha of lastDrawingState
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: dino at apple.com

After appending BeginTransparencyLayer item, the alpha of current state lastDrawingState should be reset. So any subsequent setAlpha() should be accumulated even if the new alpha equals to the last alpha which was set in lastDrawingState.

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