[Webkit-unassigned] [Bug 113269] New: [BlackBerry] Scrolling up and down can cause the screen to flash black

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=113269

           Summary: [BlackBerry] Scrolling up and down can cause the
                    screen to flash black
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit BlackBerry
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: anilsson at rim.com
                CC: jpetsovits at rim.com


Various flaws in the code can conspire to make the screen cleared to black before rendering the web page. This only happens when the BackingStore is inactive, and the LayerTiler takes on the job of drawing the root layer. When tiles are missing, this makes the "checkerboard" effect especially noticeable since you see a black color where the tile should have been. It would be better to clear to the web page background color.

PR 296106

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