I'm quite new in Vray, and can't find any description or tutorial related with special way of using multiple materials on a single object. For ex.: we have a wall, and we want to put a seamless texture, + above it a single dirt material without repeat. Beside, i want the dirt to be movable everyvere on that plygons surface.
Any idea? Blend material and overrride material is not the cake i want ☺