Ray Tracing Lossy Compressed Grid Primitives

Benthin, Carsten; Vaidyanathan, Karthik; Woop, Sven

Ray Tracing Lossy Compressed Grid Primitives

Files

001-004.pdf (15.32 MB)

Date

2021

Authors

Benthin, Carsten
Vaidyanathan, Karthik
Woop, Sven

Publisher

The Eurographics Association

Abstract

We propose a new watertight representation of geometry for ray tracing highly complex scenes in a memory efficient manner. Polygon meshes in the scene are first converted into compressed grid primitives, which are represented by a base bilinear patch with quantized displacement vectors. Ray-scene intersections are then computed by efficiently decompressing these grids onthe- fly and intersecting the implicit triangles. Our representation requires just 5:4??6:6 bytes per triangle for the combined geometry and acceleration structure, resulting in a 5-7x reduction in memory footprint compared to indexed triangle meshes. This is achieved with less than 15% increase in rendering time.

        @inproceedings{10.2312:egs.20211009
,
booktitle = {Eurographics 2021 - Short Papers
},
editor = {Theisel, Holger and Wimmer, Michael
},
title = {{Ray Tracing Lossy Compressed Grid Primitives
}},
author = {Benthin, Carsten and 
Vaidyanathan, Karthik and 
Woop, Sven
},
year = {2021
},
publisher = {The Eurographics Association
},
ISSN = {1017-4656
},
ISBN = {978-3-03868-133-5
},
DOI = {10.2312/egs.20211009
}
}