Search found 46 matches

by dbz
Mon Jan 30, 2012 2:43 pm
Forum: Tools, Demos & Sources
Topic: LuxMark v2.0 released
Replies: 9
Views: 5492

Re: LuxMark v2.0 released

I noticed something when looking at the Luxmark benchmarks, when comparing single cpu vs single gpu results, the gpu is not really that much faster than the cpu. For example, high end cpu i7-2600k vs high end gpu gtx 570 (both released within 3 months of each other) simple benchmark cpu 3966, gpu 58...
by dbz
Sun Jan 22, 2012 11:19 pm
Forum: GPU
Topic: Dissapointing building times from lbvh gpu based builder
Replies: 35
Views: 18827

Re: Dissapointing building times from lbvh gpu based builder

From a purely computational point of view, I suspect it will take at least 10 years before we'll have the raw compute power needed to run fully realistic light transport in real-time (and that's without taking into account increasing display resolution). Possibly 15 or 20. That is also what I fear....
by dbz
Tue Jan 17, 2012 10:03 pm
Forum: GPU
Topic: Dissapointing building times from lbvh gpu based builder
Replies: 35
Views: 18827

Re: Dissapointing building times from lbvh gpu based builder

Thanks for your comments. And then now that real-time ray tracing is a solved problem (thanks to Kirill), there are plenty of other interesting things in my todo list. ;) A Whitted integrator may run in real-time but I don't think ray tracing in general can be done in real time. Some global illumin...
by dbz
Fri Jan 13, 2012 2:54 pm
Forum: GPU
Topic: Dissapointing building times from lbvh gpu based builder
Replies: 35
Views: 18827

Re: Dissapointing building times from lbvh gpu based builder

I guess you are right. If it sounds too good to be true it probably is too good to be true. It would also explain why NVIDIA never released the "Simpler and Faster HLBVH with work queues" code or the earlier hlbvh code. So far for the reproducibility of academic work ... Kindoff strange NV...
by dbz
Thu Jan 12, 2012 1:03 pm
Forum: GPU
Topic: Dissapointing building times from lbvh gpu based builder
Replies: 35
Views: 18827

Re: Dissapointing building times from lbvh gpu based builder

The paper mentions building times around 10 ms for 1 million triangles for high quality trees which is real-time whereas 200 - 400 milliseconds clearly is not. I guess NVIDIA won't release the code just like the hlbvh code which still has an empty repository... The paper is too general to just start...
by dbz
Wed Jan 11, 2012 10:35 pm
Forum: GPU
Topic: Dissapointing building times from lbvh gpu based builder
Replies: 35
Views: 18827

Dissapointing building times from lbvh gpu based builder

The results from the paper "Simpler and Faster HLBVH with work queues" seem very promising so I did a search for the code and found a repository created by one of the authors which refers to the paper http://code.google.com/p/slash-sandbox/wiki/NIH . The lbvh from the repository is very fa...

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