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Question by psantoki · Apr 15, 2014 at 01:14 AM · shadowsimage effects

How to sample shadow collector in an Image Effect?

I'm trying to contain the AO effect to shadowed areas of the frame.

This is the old Hable trick from Uncharted ("your shadows need shadows"), prevents the gouging eyesore that is ambient shadows in direct sunlight, seen in Far Cry 3, Homefront, and most homebrew Unity games.

PIX shows the shadow collector in active use right before image effects run (it's there!!). But I don't know the Unity secret code necessary to make this happen (what's the shadow collector sampler name? who sets it? what's the filter used?)

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