Spectral Domain Decomposition Method for Natural Lighting and Medieval Glass Rendering

TL;DR

This paper introduces a novel ray-tracing domain decomposition method tailored for natural lighting and medieval glass rendering, demonstrating improved parallel processing efficiency in complex architectural scenes.

Contribution

It presents an original domain decomposition approach specifically designed for ray-tracing in scenes with glass, enhancing parallel computation performance.

Findings

Speedups increase with more sub-domains.

Method performs well on multi-core and multi-processor architectures.

Effective for rendering medieval glass in architectural scenes.

Abstract

In this paper, we use an original ray-tracing domain decomposition method to address image rendering of naturally lighted scenes. This new method allows to particularly analyze rendering problems on parallel architectures, in the case of interactions between light-rays and glass material. Numerical experiments, for medieval glass rendering within the church of the Royaumont abbey, illustrate the performance of the proposed ray-tracing domain decomposition method (DDM) on multi-cores and multi-processors architectures. On one hand, applying domain decomposition techniques increases speedups obtained by parallelizing the computation. On the other hand, for a fixed number of parallel processes, we notice that speedups increase as the number of sub-domains do.