射线追踪管道的多边界体层次结构

SIGGRAPH ASIA 2016 Technical Briefs Pub Date : 2016-11-28 DOI:10.1145/3005358.3005384

T. Viitanen, M. Koskela, P. Jääskeläinen, J. Takala

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引用次数: 7

摘要

CPU上的高性能光线跟踪现在主要基于多边界体层次(MBVH)树。我们将MBVH应用于固定函数射线追踪加速器体系结构。根据周期级模拟和功率分析，MBVH在非相干光线场景中平均每帧减少24%的能量，并将每个区域的性能提高19%，因为其紧凑的内存布局减少了DRAM流量。使用一次射线，能源效率提高了15%，单位面积的性能提高了20%。

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Multi bounding volume hierarchies for ray tracing pipelines

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%.

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SIGGRAPH ASIA 2016 Technical Briefs

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