Multi Bounding Volume Hierarchies for Ray Tracing Pipelines

Timo Viitanen, Matias Koskela, Pekka Jääskeläinen, Jarmo Takala

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    1 Citation (Scopus)
    538 Downloads (Pure)


    High-performance ray tracing on CPU is now largely based on Multi Bounding Volume Hierarchy (MBVH) trees. We apply MBVH to a fixed-function ray tracing accelerator architecture. According to cycle-level simulations and power analysis, MBVH reduces energy per frame by an average of 24% and improves performance per area by 19% in scenes with incoherent rays, due to its compact memory layout which reduces DRAM traffic. With primary rays, energy efficiency improves by 15% and performance per area by 20%.
    Original languageEnglish
    Title of host publicationSIGGRAPH ASIA 2016 Technical Briefs
    ISBN (Print)978-1-4503-4541-5
    Publication statusPublished - 2016
    Publication typeA4 Article in conference proceedings
    EventACM SIGGRAPH Asia -
    Duration: 1 Jan 1900 → …


    ConferenceACM SIGGRAPH Asia
    Period1/01/00 → …


    • ray tracing, ray tracing hardware

    Publication forum classification

    • Publication forum level 1


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