gpu上cpu风格的SIMD射线遍历

Proceedings of the Conference on High-Performance Graphics Pub Date : 2018-08-10 DOI:10.1145/3231578.3231583

Alexander Lier, M. Stamminger, Kai Selgrad

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引用次数: 8

摘要

在本文中，我们描述并评估了cpu风格的SIMD射线遍历在GPU上的实现。我们展示了如何在一个warp中跨多个线程扩展适度宽的bvh(最多分支因子为8)可以提高性能，同时不需要昂贵的预处理。所提出的射线遍历方法具有更好的遍历性能，特别是对于越来越不相干的射线。

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CPU-style SIMD ray traversal on GPUs

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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Proceedings of the Conference on High-Performance Graphics

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