Combining GPU Tracing Methods within a Single Ray Query

Abstract

HWRT onlyCombined (Ours) DF Only GI-1.0 Time: 5.66 ms 4.55 ms 3.58 ms Figure 1: Our combined tracing method applied within GI-1.0 [Boissé et al. 2022], shown with the per-frame time of the GI algorithm.Notice that with our method, we do not have the obvious artefacts in corners and in shadows. These artefacts are due to inaccuracies in the distance field, which we avoid, while saving 1.2 ms compared to the hardware ray tracing only solution. While not visually identical, our result is much closer and more perceptually pleasing without paying the full cost of hardware ray tracing. Full resolution images can be found in our supplemental material.