Hybrid CPU/GPU KD-Tree Construction for Versatile Ray Tracing

Jean-Patrick Roccia , Christophe Coustet (1) , Mathias Paulin (2)

1 HPC-SA Raytracing Solutions
2 IRIT-VORTEX - Visual Objects from Reality To Expression

In this paper, we propose an hybrid CPU-GPU ray-tracing implementation based on an optimal Kd-Tree as acceleration structure. The construction and traversal of this KD-tree takes benefits from both the CPU and the GPU to achieve high-performance ray-tracing on mainstream hardware. Our approach, flexible enough to use only one computing units (CPU or GPU), is able to efficiently distribute workload between CPUs and GPUs for fast construction and traversal of the KD-tree.

Domaines: Synthèse d'image et réalité virtuelle [cs.GR]

Jean-Patrick Roccia, Christophe Coustet, Mathias Paulin. Hybrid CPU/GPU KD-Tree Construction for Versatile Ray Tracing. Eurographics 2012, CRS4 Visual Computing and University of Cagliari., May 2012, Cagliari, Italy. ⟨hal-01518531⟩