So I am trying to achieve opacity via the alpha channel so I can use opacity with Xoliuli's shader. Specifically how he uses it here
http://www.laurenscorijn.com/shadersetupvideo2 at the 43:50 mark.
So a short tut or a link to one as to how to do it in PS would be great. I have tried doing it myself but I am obviously doing something wrong.:poly127:
Thanks.
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