Alias-Free Shadows with Ray Cones for Alpha Tested Geometry
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Date
2025
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We present a method for computing alias-free, smooth shadows for alpha-tested geometry using a single ray per pixel. Without mipmap filtering, hard shadows from alpha-tested geometry appear very noisy under camera motion. Typically, many ray samples are required to soften the shadows and reduce noise. We propose using mipmaps instead, to achieve a fast and temporally stable solution. To determine the appropriate mipmap level, we introduce novel ray cone operations that account for directional and point light sources.
Description
CCS Concepts: Computing methodologies → Ray tracing; Antialiasing; Visibility
@inproceedings{10.2312:vmv.20251226,
booktitle = {Vision, Modeling, and Visualization},
editor = {Egger, Bernhard and Günther, Tobias},
title = {{Alias-Free Shadows with Ray Cones for Alpha Tested Geometry}},
author = {Brüll, Felix and Kern, René and Grosch, Thorsten},
year = {2025},
publisher = {The Eurographics Association},
ISBN = {978-3-03868-294-3},
DOI = {10.2312/vmv.20251226}
}