Sub-triangle opacity masks for faster ray tracing of transparent objects

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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
ACM
Abstract
We propose an easy and simple-to-integrate approach to accelerate ray tracing of alpha-tested transparent geometry with a focus on Microsoft® DirectX® or Vulkan® ray tracing extensions. Pre-computed bit masks are used to quickly determine fully transparent and fully opaque regions of triangles thereby skipping the more expensive alpha-test operation. These bit masks allow us to skip up to 86% of all transparency tests, yielding up to 40% speed up in a proof-of-concept DirectX® software only implementation.
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@inproceedings{
10.1145:3406180
, booktitle = {
Proceedings of the ACM on Computer Graphics and Interactive Techniques
}, editor = {
Yuksel, Cem and Membarth, Richard and Zordan, Victor
}, title = {{
Sub-triangle opacity masks for faster ray tracing of transparent objects
}}, author = {
Gruen, Holger
and
Benthin, Carsten
and
Woop, Sven
}, year = {
2020
}, publisher = {
ACM
}, ISSN = {
2577-6193
}, ISBN = {}, DOI = {
10.1145/3406180
} }
Citation