Strategies for Bounding Volume Hierarchy Updates for Ray Tracing of Deformable Models
Thomas B. Larsson · 2003
In this paper, we describe strategies for bounding volume hierarchy updates for ray tracing of deformable models. By using pre-built hierarchy structures and a lazy evaluation technique for updating the bounding volumes, the hierarchy reconstruction can be made very e#ciently. Experiments show that for deforming triangle meshes the reconstruction time of the bounding volume hierarchies per frame can be reduced by an order of magnitude compared to previous approaches, which also results in a significant speed-up in the total rendering time for many types of dynamically changing scenes. We believe our approach is a step towards interactive ray tracing of scenes where moving objects can be dynamically changed in non-deterministic ways.