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Re: VDB Volume world space is not identical to Houdini

Posted: Tue Oct 04, 2016 3:07 pm
by WhyGee
Hi guys
The dop network and all successive operations such as import from dops into sop have no transformations whatsoever at least not something explicit. The only thing to note is that the whole scene is in centimeters. The strange thing though is that the same vdb cache renders fine in octane for houdini yet not in octane for cinema.

Re: VDB Volume world space is not identical to Houdini

Posted: Tue Oct 04, 2016 3:26 pm
by aoktar
WhyGee wrote:Hi guys
The dop network and all successive operations such as import from dops into sop have no transformations whatsoever at least not something explicit. The only thing to note is that the whole scene is in centimeters. The strange thing though is that the same vdb cache renders fine in octane for houdini yet not in octane for cinema.
There is two method for volumes.
1-Transfering VDB file name to octane. Units has be setted.
2-Transfering voxels to octane.

Here in case no:1 is used.

Re: VDB Volume world space is not identical to Houdini

Posted: Tue Oct 04, 2016 4:03 pm
by WhyGee
Yes that's what we did. Why is there a difference between octane for houdini and octane for cinema using the exact same files?

Re: VDB Volume world space is not identical to Houdini

Posted: Tue Oct 04, 2016 4:10 pm
by aoktar
WhyGee wrote:Yes that's what we did. Why is there a difference between octane for houdini and octane for cinema using the exact same files?
How you did? As i know in houdini plugin is transfering voxels by memory mechanism not by files. Otherwise with using vdb filenames it will be same under equal parameters.

Re: VDB Volume world space is not identical to Houdini

Posted: Tue Oct 04, 2016 9:14 pm
by WhyGee
In houdini there are also 2 options for rendering volumes. One is directly from voxels in memory and the other by specifying vdb files as Yam did in cinema. I used that method to render from vdb files and it works fine in octane for houdini therefor i suspect there might be something wrong with the cinema to octane translation. Maybe Juan could advice

Thank you

Re: VDB Volume world space is not identical to Houdini

Posted: Tue Oct 04, 2016 9:45 pm
by juanjgon
Well, while rendering from OpenVDB files, the Houdini plugin is using the Octane native VDB functions, that I suppose are the same used in all the other plugins. Do you know if Standalone has problems with these files?

Thanks,
Juanjo

Re: VDB Volume world space is not identical to Houdini

Posted: Wed Oct 05, 2016 6:37 am
by WhyGee
If you are referring to me then i havent checked directly in the standalone.
Im not fluent in the standalone ui but if u guys want to test anything otherwise from houdini let me know.

Thanks
Yaniv