Shading computer-generated objects using generalized shading regions

摘要

Computer-generated objects are tessellated into generalized shading regions having any number of vertices. The shading regions are passed to a shader via a generalized parametric scheme that accommodates shapes having different numbers of vertices. The shader determines and assigns color values to the exact area defined by each shading region, without requiring the use of approximations such as bounding boxes or ellipsoids. The use of generalized shading regions facilitates greater flexibility and accuracy in shading operations.