A High-Resolution Compression Scheme for Ray Tracing Subdivision Surfaces with Displacement

Lier A, Martinek M, Stamminger M, Selgrad K (2018)

Publication Language: English

Publication Type: Conference contribution, Original article

Publication year: 2018

Publisher: ACM

City/Town: New York, NY, USA

Book Volume: 1

Article Number: 33

Conference Proceedings Title: Proceedings of the ACM on Computer Graphics and Interactive Techniques, Volume 1 Issue 2, August 2018

Event location: Vancouver CA

Journal Issue: 2

DOI: 10.1145/3233308

Abstract

Subdivision surfaces, especially with displacement, are one of the key modeling primitives used in high-quality rendering environments, such as, e.g., movie production. While their use easily maps to rasterization-based frameworks, they pose a significant challenge for ray tracing environments. This is due to the fact that incoherent access patterns require storing or caching fully tessellated and displaced meshes for efficient intersection computations. In this paper we use a two-tier hierarchy built on a scene's patches. It relies on compressed and quantized bounding volumes on the second tier to reduce the size of the BVH itself. Based on this acceleration structure, we propose a quantized, compact approximation for leaf nodes while being faithful to the underlying patch-geometry. We build on recent advances and present a system that shows competitive performance regarding run-time speed, which is close to full-resolution pre-tessellation methods as well as to previous compression approaches. Ultimately, we provide strong compression of up to a factor of 5:1 compared to state-of-the-art methods while maintaining high geometrical fidelity surpassing similarly compact approximations and getting close to uncompressed geometry.

Authors with CRIS profile

Alexander Lier Chair of Visual Computing (LGDV) Magdalena Martinek Chair of Visual Computing (LGDV) Marc Stamminger Chair of Visual Computing (LGDV)

How to cite

APA:

Lier, A., Martinek, M., Stamminger, M., & Selgrad, K. (2018). A High-Resolution Compression Scheme for Ray Tracing Subdivision Surfaces with Displacement. In Proceedings of the ACM on Computer Graphics and Interactive Techniques, Volume 1 Issue 2, August 2018. Vancouver, CA: New York, NY, USA: ACM.

MLA:

Lier, Alexander, et al. "A High-Resolution Compression Scheme for Ray Tracing Subdivision Surfaces with Displacement." Proceedings of the High-Performance Graphics 2018, Vancouver New York, NY, USA: ACM, 2018.

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