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Multi-Layer Reservoir Splatting for Temporal Reuse under Disocclusion

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Pengpei Hong, Song Zhang, Daqi Lin, Markus Kettunen, Chris Wyman, Cem Yuksel

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Multi-Layer Reservoir Splatting for Temporal Reuse under Disocclusion is a Utah Graphics Lab paper on improving ReSTIR temporal reuse when disocclusions invalidate pixel histories. Authors include Pengpei Hong, Song Zhang, Daqi Lin, Markus Kettunen, Chris Wyman, and Cem Yuksel.

The method adds multiple screen-space layers and uses reservoir splatting to move samples between layers so previously occluded light paths can be reused when they become visible again. Depth-range domain redefinition cuts redundant ray queries, and selective tracking of active domains limits the cost of maintaining many layers.

Interactive comparisons on several scenes show reduced disocclusion noise with modest overhead over baseline ReSTIR splatting timings reported on the project page. The work targets real-time path tracing systems already using ReSTIR-style spatiotemporal resampling.

Advanced rendering engineers and researchers working on ReSTIR denoising and temporal stability are the core audience. It extends a line of Utah and industry work on ReSTIR disocclusion handling cited in real-time GI discussions.

Link last verified accessible on 2026-09-28.