[Bf-cycles] A couple of interesting BVH traversal papers

Brecht Van Lommel brechtvanlommel at pandora.be
Fri Mar 28 23:44:18 CET 2014

Thanks for the links.

The stackless BVH doesn't seem so interesting at the moment, because
it's slower on both the CPU and GPU. Maybe it's more for raytracing

The other paper shows about 20% faster raytracing for first bounce
rays, which is neat and it's interesting that it apparently makes this
kind of batching / ray ordering method consistently faster, whereas
previously it was more hit and miss. I wouldn't call it an order of
magnitude faster though, unless I'm missing something.


On Tue, Mar 25, 2014 at 3:51 PM, Matthew Heimlich
<matt.heimlich at gmail.com> wrote:
> Thought I'd toss a couple of interesting BVH papers I'd found recently
> onto the mailing list. One is a stackless MBVH method that promises
> nice memory savings on the GPU, the other is a paper for CPU path
> tracing by Jacco Bikker which he claims can be an order of magnitude
> faster than the previous state-of-the-art algorithms. Bikker is the
> mind behind Arauna/Brigade for those who don't know. When he speaks up
> about BVH speed, I tend to take it seriously!
> Anyway, thought they'd be interesting to some folks on here.
> Cheers!
> http://cg.iit.bme.hu/~afra/publications/afra2013cgf_mbvhsl.pdf
> http://arauna2.ompf2.com/files/cgf_article.pdf
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