Beyond ExaBricks: GPU Volume Path Tracing of AMR Data
Stefan Zellmann, Qi Wu, Alper Sahistan, Kwan-Liu Ma, and Ingo Wald
The Eurographics Conference on Visualization (EuroVis), 2024
Figure 1: AMR rendering comparison using ExaBrick vs. our extended framework. Top-left: original 'sci-vis style' renderingwith ray marching, local shading with on-the-fly gradients, and a delta light source. Bottom-right: volumetric path tracing with multiscattering, isotropic phase function and ambient lighting. The original software used two RTX 8000 GPUs to render a convergence frame with allquality settings set to maximum at 4 frames/sec.; our framework, with the best combination of optimizations discussed in this paper, renderspath-traced convergence frames with full global illumination at 6.7 frames/sec.
