clipka <ano### [at] anonymousorg> wrote:
> Fusing POV-Ray with GPU would be a challenging task, as POV-Ray's
> internal architecture relies on recursive function calls, which are
> still a problem with GPUs; also, POV-Ray does not provide any
> sophisticated mechanisms to "bundle" rays into batches to undergo
> simultaneous processing (which would be necessary to exploit the full
> power of a GPU); you would need some mechanism to identify "similar"
> rays ("coherence" would be a buzzword here, though not in the laser sense).

Luxrays is a GPL providing precisely such mechanism:

http://www.luxrender.net/wiki/index.php?title=LuxRays

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