how do you position textures/deal with parametrization there, then?
with renderman SL you can use the point position that you are shading at that time. You can then do calculations based on that.
pixar only use UV mapping for decals and lettering all of their texturing is done using renderman. And no it's very very not free. But there are a few renderman compliant renderers that are.... emm i think they are air, brmt, angel (being developed by one of my lecturers).
It's worth looking into and it can really help you get a job in the industry too.
Technical Director - Framestore
Currently working on: Your Highness