Dando la vuelta por la web, me encontré éste shader gratuito para 3DS Max, realtime viewport, normal maps, soft texuring, soft shadows, etc… http://xoliulshader.com/ Más ejemplos en: http://xoliulshader.com/videos
This is the Armax redesign I posted a while ago. I’m working on it to practice animation with quadrupeds, still Work In Progress, next step is to make asynchronous motion...