Multi‐level tetrahedralization‐based accelerator for ray‐tracing animated scenes
Aytek Aman, Serkan Demirci, Uğur Güdükbay, Ingo Wald · Computer Animation and Virtual Worlds · 2021
Abstract We describe a hybrid acceleration structure for ray tracing. The hybrid structure is a Bounding Volume Hierarchy (BVH) where the leaf nodes are tetrahedralized for a decent ray‐surface intersection performance. We use the hybrid acceleration structure (BTH) in a two‐level acceleration structure for rendering animated scenes. There is a BVH at the top level in this two‐level structure and the proposed hybrid structure (BTH) at the bottom level. We test the proposed two‐level structure (BVH‐BTH) for various animated scenes and obtained promising results against other acceleration structures in terms of rendering times. The two‐level BVH‐BTH structure outperforms the two‐level BVH structure for the tested dynamic scenes.