CPU-Style SIMD Ray Traversal on GPUs

Lier A, Stamminger M, Selgrad K (2018)

Publication Language: English

Publication Type: Conference contribution, Original article

Publication year: 2018

Conference Proceedings Title: HPG '18 Proceedings of the Conference on High-Performance Graphics

Event location: Vancouver CA

ISBN: 978-1-4503-5896-5

DOI: 10.1145/3231578.3231583


In this paper we describe and evaluate an implementation of CPU-style SIMD ray traversal on the GPU. We show how spreading moderately wide BVHs (up to a branching factor of eight) across multiple threads in a warp can improve performance while not requiring expensive pre-processing. The presented ray-traversal method exhibits improved traversal performance especially for increasingly incoherent rays.

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Lier, A., Stamminger, M., & Selgrad, K. (2018). CPU-Style SIMD Ray Traversal on GPUs. In ACM New York, NY, USA (Eds.), HPG '18 Proceedings of the Conference on High-Performance Graphics. Vancouver, CA.


Lier, Alexander, Marc Stamminger, and Kai Selgrad. "CPU-Style SIMD Ray Traversal on GPUs." Proceedings of the High-Performance Graphics 2018, Vancouver Ed. ACM New York, NY, USA, 2018.

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