Directed Acyclic Graph Encoding for Compressed Shadow Maps

Scandolo, Leonardo; Eisemann, Elmar

Directed Acyclic Graph Encoding for Compressed Shadow Maps

Files

053-059.pdf (6.9 MB)

paper1029.avi (96.83 MB)

Date

2021

Authors

Scandolo, Leonardo
Eisemann, Elmar

Publisher

The Eurographics Association

Abstract

Detailed shadows in large-scale environments are challenging. Our approach enables efficient detailed shadow computations for static environments at a low memory cost. It builds upon compressed precomputed multiresolution hierarchies but uses a directed acyclic graph to encode its tree structure. Further, depth values are compressed and stored separately and we use a bit-plane encoding for the lower tree levels entries in order to further reduce memory requirements and increase locality. We achieve between 20% to 50% improved compression rates, while retaining high performance.

        @inproceedings{10.2312:hpg.20211283
,
booktitle = {High-Performance Graphics - Symposium Papers
},
editor = {Binder, Nikolaus and Ritschel, Tobias
},
title = {{Directed Acyclic Graph Encoding for Compressed Shadow Maps
}},
author = {Scandolo, Leonardo and 
Eisemann, Elmar
},
year = {2021
},
publisher = {The Eurographics Association
},
ISSN = {2079-8687
},
ISBN = {978-3-03868-156-4
},
DOI = {10.2312/hpg.20211283
}
}