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Fast Local and Global Illuminations through a Simid Z-Buffer

机译:通过Simid Z缓冲区快速进行局部和全局照明

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摘要

The z-buffer is a well-known hidden-part removal technique commonly used by local illumination algorithms. Some global illumination approaches use this technique too, in order to approximate energy exchanges. In this paper we propose a massively parallel implementation of the z-buffer on the MP-1 machine. Efficiency is achieved by precisely studying the different stages of the algorithm, and by taking care in correctly using the SIMD control of the architecture. Local illumination models are then applied to the z-buffer algorithm, by using Gouraud and Phong's interpolations. Finally, the parallel z-buffer is used in a massively parallel radiosity algorithm. The results obtained allow to provide quickly illuminated images by decreasing dramatically the computation time required for global illumination.
机译:z缓冲区是局部照明算法通常使用的众所周知的隐藏部分去除技术。一些全局照明方法也使用此技术,以便进行能量交换。在本文中,我们提出了在MP-1机器上大规模并行执行z缓冲区的方法。通过精确研究算法的不同阶段并正确使用体系结构的SIMD控制,可以提高效率。然后,通过使用Gouraud和Phong的插值,将局部照明模型应用于z缓冲区算法。最后,并行z缓冲区用于大规模并行光能传递算法中。通过大大减少全局照明所需的计算时间,获得的结果可以提供快速照明的图像。

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