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    Improved Two-Level BVHs Using Partial Re-Braiding

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    Date
    2017
    Author
    Benthin, Carsten
    Woop, Sven
    Afra, Attila T.
    Wald, Ingo ORCID
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    Abstract
    We propose a novel approach for improving the quality of two-level BVHs (i.e., a two-level data structure that uses a top-level BVH built over second-level object BVHs). After building an individual, high-quality BVH for each object, our new top-level BVH build approach selectively re-braids (opens and merges) object BVHs during the build process to reduce overlap and improve SAH quality. We demonstrate that compared to the two main state-of-the-art techniques-brute-force re-construction of a single, flat BVH; and building a traditional two-level BVH over objects, respectively-the proposed approach achieves build times significantly faster than the former, while simultaneously yielding traversal performance that is much higher than the latter.
    BibTeX
    @inproceedings {10.1145:3105762.3105776,
    booktitle = {Eurographics/ ACM SIGGRAPH Symposium on High Performance Graphics},
    editor = {Vlastimil Havran and Karthik Vaiyanathan},
    title = {{Improved Two-Level BVHs Using Partial Re-Braiding}},
    author = {Benthin, Carsten and Woop, Sven and Afra, Attila T. and Wald, Ingo},
    year = {2017},
    publisher = {ACM},
    ISSN = {2079-8679},
    ISBN = {978-1-4503-5101-0},
    DOI = {10.1145/3105762.3105776}
    }
    URI
    http://dx.doi.org/10.1145/3105762.3105776
    https://diglib.eg.org:443/handle/10.1145/3105762-3105776
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    Eurographics Association copyright © 2013 - 2023 
    Send Feedback | Contact - Imprint | Data Privacy Policy | Disable Google Analytics
    Theme by @mire NV
    System hosted at  Graz University of Technology.
    TUGFhA