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QCCompositionLayer with transparent background Not Working

Hello all,

I am trying to use a quartz composition as a Layer in my Core Animation project. It must be a sublayer to an image as a background.

The Quartz Composition has a transparent background.

I have everything working however, the clear patch no longer seems to clear the background and artifacts appear on the screen.

Any way to get the clear patch working with a transparent background when using QCCompositionLayer ?

Thanks 

Bob

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