[Webkit-unassigned] [Bug 108641] New: [TexMap] Backing store paints all tiles

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=108641

           Summary: [TexMap] Backing store paints all tiles
           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: allan.jensen at digia.com


The backing issues paint commands to all tiles regardless of clipping. When using the TextureMapperImageBuffer, this may cause all the tiles to be processed and internally painted before they are clipped when painting to graphics context.

We should either avoid requesting paint of fully clipped tiles, or exit early when painting a fully clipped tile.

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