[Bf-cycles] Future of the non-progressive renderer and Cycles strand rendering

Matthew Heimlich matt.heimlich at gmail.com
Sun Jan 6 03:37:28 CET 2013

Sorry for the delayed response, but I'm interested, what is currently
on the table as far as hair development goes? For the near future I
mean. I'm very pleased with the surprise reveal of a strand patch, and
would like to know what the roadmap for such an implementation looks
like between where the patch started and an 'end' point where features
like light cache and automatic alpha blending are included.

On Fri, Jan 4, 2013 at 7:18 PM, Brecht Van Lommel
<brechtvanlommel at pandora.be> wrote:
> On Fri, Jan 4, 2013 at 10:05 PM, Nathan Vegdahl <cessen at cessen.com> wrote:
>> Regarding hair pruning:
>> I wonder if some kind of russian-roulette in the BVH traversal could
>> work...?  And maybe scaling the alpha based on the number of
>> near-nodes skipped.  Not sure if that would be too noticeable an
>> approximation, or how it would affect noise, but just an idea.
> You could do some fun stuff here, but I'm not sure we should try to
> this kind of level of detail in the raytracer, better do stochastic
> simplification before rendering then which also avoids the memory
> usage. Also making the render result depend on the BVH structure is
> something we should try to avoid I think.
> Brecht.
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