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Re: Using flters inside a .qtz

The processing path of my application is this:

CIImage -> QCRenderer/CIFilter -> CIImage -> Texture -> OpenGL calls
(morphing, warping) -> CImage -> QCRenderer/CIFilter -> display (GL)

You can simplify this quite a bit: avoid unnecessary CIImage roundtrips. Just use CVOpenGLBuffers to render GL stuff into and pass them to QC.

The user should be able to use his own Quartz Composition (or a
CIFilter), either before my opengl calls or after. So I guess I must
render QC output into a pixel buffer directly, although it would have
been easier with all CIImage approach.

Look at those sample codes for close integration of QC with OpenGL
http://developer.apple.com/samplecode/QuartzComposerTexture/ QuartzComposerTexture.html
http://developer.apple.com/samplecode/QuartzComposer_WWDC_QCTV/ QuartzComposer_WWDC_QCTV.html

Are the NSImage output always created by the QCRenderer, or only when
requested ? Might influence performance-wise.


On request

________________________________________________________
Pierre-Olivier Latour                            	email@hidden
Quartz Composer Team				Apple Computer, Inc.



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References: 
 >Using flters inside a .qtz (From: "Raphael Sebbe" <email@hidden>)
 >Re: Using flters inside a .qtz (From: Pierre-Olivier Latour <email@hidden>)
 >Re: Using flters inside a .qtz (From: "Raphael Sebbe" <email@hidden>)



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