“Advances in Spatial Hashing: A Pragmatic Approach towards Robust Real-time Light Transport Simulation” by Gautron
Conference:
Type(s):
Entry Number: 06
Title:
- Advances in Spatial Hashing: A Pragmatic Approach towards Robust Real-time Light Transport Simulation
Presenter(s)/Author(s):
Abstract:
Spatial hashing is a battle-tested technique for efficiently storing sparse spatial data. Originally designed to optimize secondary light bounces in path tracing, it has been extended for real-time ambient occlusion and diffuse environment lighting. We complement spatial hashing by introducing support for view-dependent effects using world-space temporal filtering. Optimizing the hash key generation, we improve performance using a much better cache coherence and aliasing reduction. Finally, we enhance the sampling quality using methods including visibility-aware environment sampling.
References:
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Pascal Gautron. 2021. Ray Tracing Gems II: Next Generation Real-Time Rendering with DXR, Vulkan, and OptiX. Apress, Chapter Practical Spatial Hash Map Updates, 659–671. https://doi.org/10.1007/978-1-4842-7185-8_41Google Scholar
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