iPhone SDK - Get image from camera/camera roll, process w/ OpenGLES

Question

I am writing a basic image processing app. Right now I have code in place to load an image via the Camera or the image picker and set it as the source image for a UIImageView object in my interface. The object is configured with the "Aspect Fill" property, so I don't have to programmatically crop the image.

Looking at the sample code provided at this link: http://developer.apple.com/iphone/library/samplecode/GLImageProcessing/

It seems that I need to include Apple's EAGLView class and add a view in my interface of that class. My problem here is I need to know how to load the positioned/cropped image in my UIImageView into the EAGLView... or if there is another, more efficient way to programmatically get the data from point A to point B.

Or maybe I'm just going about this all wrong! I'm open to options.

Answer 1

I even do not know how to connect EAGLView together with UIView, just one line code

• (void)sliderAction:(id)sender { // Redraw the view with the new settings [((EAGLView*)self.view) drawView]; }

So hard to understand this sample.