[Webkit-unassigned] [Bug 102309] New: Coordinated Graphics: A Minor optimization of calculating transforms in CoordinagedGraphicsLayer.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=102309

           Summary: Coordinated Graphics: A Minor optimization of
                    calculating transforms in CoordinagedGraphicsLayer.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: luxtella at company100.net


We calculate an inverse transform each tiledBackingStoreVisibleRect() call by a TiledBackingStore and every tiles.
This patch caches the inverse transform to reuse it.

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