[Webkit-unassigned] [Bug 32081] New: repaint events from outside the viewport aren't received

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=32081

           Summary: repaint events from outside the viewport aren't
                    received
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: antognolli at profusion.mobi
                CC: hyatt at apple.com, simon.fraser at apple.com,
                    kenneth at webkit.org


Repaint events are clipped with the viewport area to prevent those that are
fully outside the screen of triggering some rendering. This optimization
prevents one of implementing backing stores that keeps some content of the page
in a cache, because this cache should be marked as dirty when a repaint is
called. Since the repaints are being clipped, no dirty area is marked.

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