I rendered out a point cloud from maya! I know! Exciting! So know I just have to make a shader that uses that to make an occlusion pass and I've succeded in step one of my renderman goals.
My next step is to create a blinn shader that willl bake out it's own lighting and shading into the point cloud so I can use that to start doing some fake GI bounces. This is all very exciting to me. I'm so used to ray tracing everything and having to worry about fitting things in to memory but now I will not really have to worry so much about that. I'll be able to render trees and grass and still have occlusion and some form of GI color bleeding, very fun. I should write a tutorial up soon.
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