Re: FxTexture & QCRenderer

Subject: Re: FxTexture & QCRenderer
From: Darrin Cardani <email@hidden>
Date: Mon, 17 Sep 2007 09:25:09 -0700

On Sep 16, 2007, at 6:19 PM, Christoph Vonrhein wrote:

How can I pass a FXTexture most efficiently to a QCRenderer input port ? All my current attempts failed. I managed to pass a FxBitmap to QCRenderer, but this was too slow and also the R and B channels were mixed up.

Apple's technical note #2143 (http://developer.apple.com/technotes/tn2005/tn2143.html) says that an CVOpenGLBufferRef should work. But I always get this error "warning: passing argument 1 of 'setValue:forInputKey:' from incompatible pointer type".

Is there some updated technical note about how to pass image data (especially a texture) to QCRenderer ?

I've never done this before, but from looking over the docs at:

<http://developer.apple.com/documentation/GraphicsImaging/Conceptual/CoreVideo/index.html>

for CoreVideo, it looks like you need to create a CoreVideo OpenGL texture. If you check out the CoreVideo Reference (after reading the above link):

<http://developer.apple.com/documentation/GraphicsImaging/Reference/CoreVideoRef/index.html#//apple_ref/doc/uid/TP40001537>

It looks like you probably want something like CVOpenGLBufferCreate (), or possibly one of the CVOpenGLTexture* functions.

Darrin

Darrin Cardani

email@hidden

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References:
	>FxTexture & QCRenderer (From: Christoph Vonrhein <email@hidden>)

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