1. A method under control of one or more processors configured with executable instructions, the method comprising: rendering points on surfaces in a scene that includes global light transport; determining attributes associated with each of the points, the attributes including at least a first portion of the attributes and a second portion of the attributes; training a first point regression function based on first portion of the attributes to create a first trained model; and training a second point regression function based on the second portion of the attributes to create a second trained model.