[Webkit-unassigned] [Bug 124453] New: [Win] Optimization, no need to erase background before paint.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=124453

           Summary: [Win] Optimization, no need to erase background before
                    paint.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: peavo at outlook.com


As the paint will blit a bitmap onto the invalid area (no alpha), there is no need to erase the background first, as this will be overwritten by the blit.

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