[Webkit-unassigned] [Bug 50070] New: Don't do GraphicsContext save/restore just to preserve the CompositeOperator

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=50070

           Summary: Don't do GraphicsContext save/restore just to preserve
                    the CompositeOperator
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: Performance
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kling at webkit.org
                CC: reni at webkit.org


We currently put GraphicsContext::save()/restore() pairs around calls to GraphicsContext::setCompositeOperation()
This can be avoided by adding a GraphicsContext::compositeOperation() and simply resetting that after doing some paint operations (that don't taint the context.)

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