Many‐Light Rendering Using ReSTIR‐Sampled Shadow Maps
Year: 2025
Type: article
Abstract: We present a practical method targeting dynamic shadow maps for many light sources in real‐time rendering. We compute full‐resolution shadow maps for a subset of lights, which we select with spatiotemporal reservoir resampling (ReSTIR). Our selection strategy automatically regenerates shadow maps for lights with the strongest contributions to pixels in the current camera view. The remaining lights are handled using imperfect shadow maps, which provide low‐resolution shadow approximation. We significantly reduce the computation and storage compared to using all full‐resolution shadow maps and substantially improve shadow quality compared to handling all lights with imperfect shadow maps.
Source: Computer Graphics Forum
DOI: 10.1111/cgf.70059
Authors: Song Zhang, Daqi Lin, Chris Wyman, Cem Yuksel
Institutions: University of Utah, Nvidia (United States)
Language: English
Field: Computer Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,710
OpenAlex ID: W4409569271