Rearchitecting Spatiotemporal Resampling for Production

Wyman, Chris; Panteleev, Alexey

Rearchitecting Spatiotemporal Resampling for Production

Files

023-041.pdf (87.97 MB)

paper1015.mp4 (605.29 MB)

Date

2021

Authors

Wyman, Chris
Panteleev, Alexey

Publisher

The Eurographics Association

Abstract

Recent work by Bitterli et al. [BWP*20] introduced a real-time, many-light algorithm for rendering dynamic direct illumination from millions of lights by iteratively applying resampled importance sampling using weighted reservoir sampling. While enabling new levels of lighting complexity in real-time, the total cost remained beyond the budgets of even the most computationally demanding games. We introduce key algorithmic improvements developed while productizing this method that collectively reduce lighting costs by up to 7x, dramatically improve memory coherence, shrink the required ray budget, increase rendering quality, and expose parameters that enable trading quality for performance.

        @inproceedings{10.2312:hpg.20211281
,
booktitle = {High-Performance Graphics - Symposium Papers
},
editor = {Binder, Nikolaus and Ritschel, Tobias
},
title = {{Rearchitecting Spatiotemporal Resampling for Production
}},
author = {Wyman, Chris and 
Panteleev, Alexey
},
year = {2021
},
publisher = {The Eurographics Association
},
ISSN = {2079-8687
},
ISBN = {978-3-03868-156-4
},
DOI = {10.2312/hpg.20211281
}
}