Spectral domain decomposition method for natural lighting and medieval glass rendering

G. Gbikpi-Benissan (1) , Remi Cerise (2) , Patrick Callet (2) , F. Magoules (2)

1 IRT SystemX
2 MAS - Mathématiques Appliquées aux Systèmes - EA 4037

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.

Domaines: Mathématique discrète [cs.DM]

G. Gbikpi-Benissan, Remi Cerise, Patrick Callet, F. Magoules. Spectral domain decomposition method for natural lighting and medieval glass rendering. 16th International Conference on High Performance and Communications (HPCC 2014), Aug 2014, Paris, France. ⟨10.1109/hpcc.2014.17⟩. ⟨hal-01273946⟩