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

[Nathan Vegdahl]

Bikker said that?  Are you thinking of this thread:
http://ompf2.com/viewtopic.php?f=6&t=1894

If so, it was mpeterson who claimed to have an order-of-magnitude faster
method, not Bikker.  And mpeterson was very vague and not forthcoming about
it.

Bikker said that his own method is about 20% faster than existing methods,
which is consistent with the results presented in the paper.

--Nathan
On Mar 28, 2014 4:02 PM, "Matthew Heimlich" <matt.heimlich at gmail.com> wrote:

> Indeed, it doesn't appear to be an order of magnitude to me either,
> but that's a quote from Bikker himself over on Ompf. Might be worth
> clarifying with him.
>
> On Fri, Mar 28, 2014 at 6:44 PM, Brecht Van Lommel
> <brechtvanlommel at pandora.be> wrote:
> > 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
> > hardware.
> >
> > 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.
> >
> > Brecht.
> >
> > 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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