Spatio-Temporal Dithering for Order-Independent Transparency on Ray Tracing Hardware
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Date
2025
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Efficient rendering of many transparent surfaces is a challenging problem in real-time ray tracing. We introduce an alternative approach to conventional order-independent transparency (OIT) techniques: our method interprets the alpha channel as coverage and uses state-of-the-art temporal anti-aliasing techniques to accumulate transparency over multiple frames. By efficiently utilizing ray tracing hardware and its early ray termination capabilities, our method reduces computational costs compared to conventional OIT methods. Furthermore, our approach shades only one fragment per pixel, significantly lowering the shading workload and improving frame rate stability. Despite relying on temporal accumulation, our technique performs well in dynamic scenes.
Description
CCS Concepts: Computing methodologies -> Ray tracing; Rasterization; Visibility; Antialiasing
@inproceedings{10.2312:sr.20251177,
booktitle = {Eurographics Symposium on Rendering},
editor = {Wang, Beibei and Wilkie, Alexander},
title = {{Spatio-Temporal Dithering for Order-Independent Transparency on Ray Tracing Hardware}},
author = {Brüll, Felix and Kern, René and Grosch, Thorsten},
year = {2025},
publisher = {The Eurographics Association},
ISSN = {1727-3463},
ISBN = {978-3-03868-292-9},
DOI = {10.2312/sr.20251177}
}