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maxwell v3 vs v2 speed comparison

Posted: Thu Apr 17, 2014 3:26 pm
by deadalvs
Hi !

I'm still working on a large project on v2.7.20. Thus I did not update yet.

How does v3 compare to v2 speed-wise, on the same scene ? ( voxelization, preprocessing, render speed )

Please let me know ..

Matt

Re: maxwell v3 vs v2 speed comparison

Posted: Tue Apr 22, 2014 10:29 am
by AlexP
On all scenes I get min. about 10% speed increase. On some scenes with intersecting proxies about 50% faster.

Re: maxwell v3 vs v2 speed comparison

Posted: Tue Apr 22, 2014 10:57 am
by deadalvs
Cool !

What do you mean by intersecting proxies ? I'm not sure why this should have a speedup .. Well, I did not study all V3 docs yet ..

Thanks !!

matt

Re: maxwell v3 vs v2 speed comparison

Posted: Tue Apr 22, 2014 12:55 pm
by dariolanza
Hi Matt,

Yes, there are interesting speed improvements in v3.

And on the most complicated scenarios -particularly where the voxelization of the masses is complex (intersecting objects, hair, motion blur...)- we've registered speed improvements way higher than 50%.

Enjoy v3!

Dario Lanza

Re: maxwell v3 vs v2 speed comparison

Posted: Tue Apr 22, 2014 1:30 pm
by deadalvs
Very cool,

because I need to check out V3 because I run into memory issues with non-instanced geometries ( vegetation ).. have to find a different route in my pipeline.

sounds VERY promising !

btw, regarding voxelization:
would it technically be possible to 'cache' the voxelization data - as a 'GI cache' - to be able to skip the voxelization process completely between frames, if only the camera is animated in the scene ? Or does the voxelization depend on the camera position ?
Reason for why I ask this is that in my scenes, voxelization itself took between 10-15 minutes, before the rendering imer even starts ..

thanks again,

matt


matt

Re: maxwell v3 vs v2 speed comparison

Posted: Tue Apr 22, 2014 2:44 pm
by dariolanza
Hi dedalvs,

Technically is not impossible to store the voxelization to disk (although it is not developed yet) but that information would take as much space in disk that the read time of that info would take a similar amount of time than the actual voxelization.

Anyway, and as the voxelization doesn't depend on the camera position (only objects positions) we are thinking in ways to reuse it.

Cheers

Dario Lanza

Re: maxwell v3 vs v2 speed comparison

Posted: Tue Apr 22, 2014 3:08 pm
by deadalvs
thanks for the explanation !

matt