I’ve been working on a lot of Pixel Bender experiments and wanted a nice UI to allow zooming in to examine the effected pixels. I decided to use the method of having an overlaid box on a scaled version of the image that corresponds to a zoomed separate display. I looked around and found some nice sample code on FLEX{er} written by Stelian Crisan. I mostly added nice UI to adjust the parameters in his code.
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Puppies, Flowers, Rainbows and Kittens
Sarcasm and vitriol wrapped in a twee bow.