On Jun 13, 2005, at 3:14 PM, Nick Nallick wrote:
There isn't any image data in a CIImage, it's a list of operations to be performed when drawing. In order to get image data you have to render it.
Does this mean that the only place the image data is accessible is from the NSView that it's been rendered into? I don't see how to obtain this from the view.
No, you render into a CIContext, which you will have created from a CGContext, or from a GLContext, or from a reference to some destination pixel data.
In this case a CG bitmap context would probably be what you want.
Once rendered, how do you associate a CG bitmap context with it?
That's backwards. If you want pixel data (in RAM), you should create a CG bitmap context, and then render into that. Then you will have pixels.
