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Coding question: does anyone know a way to do a pixelation post-process effect that doesn't have ugly seams, like: coding-experiments.blogspot.co.uk/2010/06/pixelation.html
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(I guess I have to render to an intermediate, appropriately-scaled buffer? But it'd be great if it could have a non-int # of pixels)
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This is my best version, btw : gist.github.com/v21/d7e7c8289001f00a087b (samples center of the pixel, and the origin when changing px size is the center)