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Writing a CIKernel that returns a rectangle?

Subject: Writing a CIKernel that returns a rectangle?
From: "Santiago (Jacques) Lema" <email@hidden>
Date: Thu, 25 May 2006 21:20:44 +0200
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Hello,

is it possible to get something else than pixels out of a CIFilter? I am thinking about finding the bounds of the non- transparent zone in a CIImage. Currently the only solution I found was to draw onto an nsbitmaprep and scan the pixels from there. Could I do this without transferring the image from the GPU to the main memory? Is there a way that a CIKernel could access some static values that could then be returned by the CIFilter?

Thanks, Jacques
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References:
	>Efficient drawing OpenGL vs. CoreImage (From: "Federico Tessmann" <email@hidden>)
	>Efficient drawing OpenGL vs. CoreImage (From: "Federico Tessmann" <email@hidden>)

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