Create Position Reference (Pref) Pass in Vray for Maya
While Vray is remarkably intuitive for some daily operations, others might require a much more convoluted process. The creation of non-standard render passes, and especially the “Pref” pass is one of these (read that P-ref, like you’d read T-Rex). A few tutorials cover how to render custom render passes (a.k.a. AOVs) such as this one [...]