I would like to alter the final pixel color after all the additive passes have been done. I thought I may be able to do this with Surface Shaders, and I saw the
Alternatively, is there a way to control how the results from each pass are added?
finalcolor option controls a final color for current pass, so you need to control it in each pass to get an effect you need
it's a some expensive method to do a finalcolor for all passes - it's a GrabPass (http://docs.unity3d.com/Documentation/Components/SL-GrabPass.html) - after this pass you can do everything you want in next pass
alternatively it's a blend options (http://docs.unity3d.com/Documentation/Components/SL-Blend.html) - it controls how pixels calculated in each pass are blending with other pixels that are rendered before
answered Jul 20 '12 at 07:47 AM