Alias-Free Shadows with Ray Cones for Alpha Tested Geometry

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Date
2025
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
} }
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