[Bf-cycles] Building BVH using GPU

Brecht Van Lommel brechtvanlommel at pandora.be
Wed May 14 11:30:10 CEST 2014

It's possible, though it would be quite an undertaking. I would suggest to
first focus more on improving the BVH quality for faster ray tracing,
there's still improvements needed there. Once you need to support GPU BVH
building it becomes more difficult to extend and maintain the code.
On May 13, 2014 9:39 PM, "Zhanpeng Feng" <jumpjump88 at hotmail.com> wrote:

> Cycles is awesome in terms of ray tracing speed. However, the BVH building
> process can take quite a bit of time for complicated scenes. I googled and
> found that in 2012 BVH building speed was improved by 5x to 10x by
> multi-threading. I am wondering if it is possible to move BVH building to
> GPU and speed it up even more or if there is a barrier for doing so.
> Thanks a lot,
> Feng
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