Theory and Analysis of Higher-Order Motion Blur Rasterization
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
ACM
Abstract
A common assumption in motion blur rendering is that the triangle vertices move in straight lines. In this paper, we focus on scenarios where this assumption is no longer valid, such as motion due to fast rotation and other non-linear characteristics. To that end, we present a higher-order representation of vertex motion based on B´ezier curves, which allows for more complex motion paths, and we derive the necessary mathematics for these. In addition, we extend previous work to handle higher-order motion by developing a new tile vs. triangle overlap test. We find that our tile-based rasterizer outperforms all other methods in terms of sample test efficiency, and that our generalization of an interval-based rasterizer is often fastest in terms of wall clock rendering time. In addition, we use our tile test to improve rasterization performance by up to a factor 5 for semi-analytical motion blur rendering
Description
@inproceedings{10.1145:2492045.2492046,
booktitle = {Eurographics/ ACM SIGGRAPH Symposium on High Performance Graphics},
editor = {Kayvon Fatahalian and Christian Theobalt},
title = {{Theory and Analysis of Higher-Order Motion Blur Rasterization}},
author = {Gribel, Carl Johan and Munkberg, Jacob and Hasselgren, Jon and Akenine-Möller, Tomas},
year = {2013},
publisher = {ACM},
ISSN = {2079-8687},
ISBN = {978-1-4503-2135-8},
DOI = {10.1145/2492045.2492046}
}