[Webkit-unassigned] [Bug 112095] New: [Texmap] Synchronise layers only if the layer has been changed.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=112095

           Summary: [Texmap] Synchronise layers only if the layer has been
                    changed.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jungjik.lee at samsung.com


We always append m_layerState to coordinator in CoordinatedGraphicsLayer::flushCompositingStateForThisLayerOnly. This causes renderNext-circular calls continuously.
So this patch checks whether the layer needs to be updated or not, if we need to update the layer, then we append layer state to coordinator.
This will reduce the needless update and IPC calls.

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