VDB/SDF from file or Geo into vectron input

[mlmcgoogan]

In Octane standalone it's possible to load a VDB and plug it into an input of a vectron node. I haven't been able to find a way to do this in Houdini?

Being able to load VDB data from a file in the /mat graph would be great. What would be even more amazing is if I could somehow feed VDB data from a Geo node into a Vectron input? Am I missing something or are there any plans to support this in the future?

[juanjgon]

Hi,

Yes, I see. Sorry, something like that is not possible currently because the Octane plugin doesn't have a VOP node with a volume output, but I could think about it. Can you please share the vectron OSL code with the volume input that you are trying to use with the plugin?

Thanks,
-Juanjo

[mlmcgoogan]

Thanks Juanjo, would definitely appreciate if you find some time to look into it. As it stands now Vectron is really interesting but only really usable in standalone for me as I can't do scene geometry interaction in Houdini.

I've attached an ORBX for you. This scene is basically just pulling in a an SDF as an external resource (char_sdf), generating a fractal SDF with a Vectron (fractal_sdf), and then combining via another Vectron doing a simple union operation (SDFUnion). The union operation I'm looking to replicate in Houdini is pretty simple:

Code: Select all

#include "octane-oslintrin.h"

shader SDFUnion(
	_sdf input1 = _SDFDEF,
    _sdf input2 = _SDFDEF,
    output _sdf c = _SDFDEF)
{
    c.dist = max(input1.dist, input2.dist);
}

This code currently works in Houdini if you throw it into a Vectron node but there's just no way to feed any SDF source other than another Vectron right now.

[mlmcgoogan]

Hey juanjo,

Just saw the 2018.1.3.0 update got posted, appreciate all your ongoing work on the plugin!

Just wanted to check-in whether you have any plans to expose the above feature in the Houdini plugin? Being able to load an external VDB into a Vectron or especially a VDB from a SOP into a Vectron would be huge.

Thanks again!

[juanjgon]

Yes, I want to work on it, but probably after releasing the first 2019.1 plugin builds.

Thanks,
-Juanjo

[snakeboxmedia]

Yes, I want to work on it, but probably after releasing the first 2019.1 plugin builds.

Thanks,
-Juanjo

Is there a ball park ETA on when we get to play with all things 2019? I'm pretty excited for that build I have to say, some quite handy features start to get introduced.

[juanjgon]

Is there a ball park ETA on when we get to play with all things 2019? I'm pretty excited for that build I have to say, some quite handy features start to get introduced.

I'm working on it The first build with at least some of the new features should be available soon, around next week.

Thanks,
-Juanjo

[snakeboxmedia]

Is there a ball park ETA on when we get to play with all things 2019? I'm pretty excited for that build I have to say, some quite handy features start to get introduced.

I'm working on it The first build with at least some of the new features should be available soon, around next week.

Thanks,
-Juanjo

awesome dude! Thanks for the info, and don't worry if it takes another week or two that's cool too, im just curious. Obviously as someone with a couple of 2080TI's the outlook for 2019.1 .2 and .3 is quite exciting

[WoutTgh]

Hi,

any updates on this ?

[juanjgon]

Nope, sorry. The plugin doesn't have the architecture to do something like that yet. As a workaround, you can also do this in Standalone and import the final object as a .orbx file into your scene.

Thanks,
-Juanjo