MBKD: Acceleration structure designed for moving primitives

Haiyin Piao, Pengyuan Du, Qi Liu, Letian Yu, Yang Sun, Yuxin Wang, Xin Yang

Abstract: Highlights•We introduce a new kind of virtual node during construction that collects all the primitives to avoid inefficiencies.•We design a recursive propagation algorithm that propagates duplicated primitives in irregular nodes down the tree.•We propose filtering heuristics that limit primitive propagation and eliminate some incorrect duplicated references.•We also demonstrate a strategy for updating existing MBKD for animated scenes.