Rearchitecting Spatiotemporal Resampling for Production
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Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
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.
Description
@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}
}