[Webkit-unassigned] [Bug 58902] New: [chromium] Handle tile invalidations from the compositor thread

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=58902

           Summary: [chromium] Handle tile invalidations from the
                    compositor thread
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: enne at google.com
                CC: jamesr at chromium.org, enne at google.com,
                    nduca at chromium.org
            Blocks: 58799


Right now the tiling paint and draw code expects that checking whether a tile exists or not is a synchronous operation.  We need to pass invalidation rects for tiles that have been invalidated or have never been filled from the compositor thread back to the webkit thread for painting.  The compositor thread should also be robust to not having a tile when it needs it and may need to either block or checkerboard.

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