Approximating Subdivision Surfaces with Gregory Patches for Hardware Tessellation

摘要

We present a new method for approximating subdivision surfaces with hardware accelerated parametric patches. Our method improves the memory bandwidth requirements for patch control points; translating into superior performance compared to existing methods. Our input is general; allowing for meshes that contain both quadrilateral and triangular faces in the input control mesh; as well as control meshes with boundary. We present two implementations of our scheme designed to run on Direct3D 11 class hardware equipped with a tessellator unit.