Tests whether a compositing layer containing only an image uses a standard DPI backing store.


(GraphicsLayer
  (anchor 0.00 0.00)
  (bounds 800.00 600.00)
  (device scale 2.00)
  (children 1
    (GraphicsLayer
      (bounds 800.00 600.00)
      (contentsOpaque 1)
      (device scale 2.00)
      (children 1
        (GraphicsLayer
          (position 8.00 50.00)
          (bounds 200.00 150.00)
          (device scale 2.00)
        )
      )
    )
  )
)