[Webkit-unassigned] [Bug 64639] New: Too much repainting when scrolling with fixed position element

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=64639

           Summary: Too much repainting when scrolling with fixed position
                    element
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: HasReduction
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at webkit.org
                CC: simon.fraser at apple.com


When scrolling on a page with a fixed position element, it looks like we repaint the whole screen. I guess this can be improved.

The test case is similar to LayoutTests/repaint/fixed.html so it may be related to bug 25269.

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