the PS workflow must be emulated in maya.., thats my point, you will need to layer in the same way..,
maya is a little different than PS but the same principle using layered textures.., if you can master the layered texture.., and add layered textures to layered textures.., it branches out eh..??!.., you get a tree of spec, bump amd colour.., to each 'layer' with the blend mode in the layered texture to 'over.'
each shader will be layered with spec and bump and colour textures..,
hope this makes sense.., but you must use alphas so the 'bits' of rust are seen and only the bits of rust from each seperate texture, or the moss on the brick wall.., or whatever it is you want shown.., thats why the blend mode in the layered texture AE is needed to be set to 'over'
anyway..,remember you are talking pixar (robot) .., and everything they do is BIG and COMPLICATED.
i think it might take more than an e-mail to understand this??
its compositing in maya!!!
a lot of the work done in those movies are done in other compositing apps.., maya is just for elements these days.., things like specular, shadow, ect are best done in post using normals maps and RGBa maths.., you might check the tuts Izzy has been making lately?? but that might only go somewhere in showing you compositing and how these things are done.., not solve yyour immediate question..., its a big one!!
google.., 'rusty edges in maya textures'.., might get something!!
take it easy and life will be easy
Last edited by mirek03 : 17-07-2008 at 04:24 PM.