FumeFX VDB in Houdini?

[mstarktv]

So I come from a Max background using Vray. I can load in VDB's from Houdini through Vray's VolumeGrid. I was trying to do the reverse; load in FumeFx VDB's into Houdini. I can load in the VDB's no problem and I see it in the viewport. However, trying to use the volume shader is entirely different. When I click the VDB in the viewport and go to the primitives view I can see Fume's channels. I'm not sure it's even possible but I attached a screenshot to better explain what I'm talking about.

I would attach a .VDB file but it's 100mb so...But the scene is literally loading in the file and then has a transform to scale it down.

Thanks!!!

 

[mestela]

the houdini volume shaders expect the names to be of a fixed structure. you can tweak the shaders to match your names, but it's probably easier to go the other way around.

should all be lowercase (so rename 'Temperature' to 'temperature' for example), you can do that with a name sop:

 

The velocity field needs a little more work, but the vdb vector merge can do that for you. You tell it what the 3 scalars are, and what they should be merged to. This should work in your case:

[mstarktv]

Matt, you are truly a lifesaver. I was looking everywhere for this and I knew there had to be some sort of "channel switching" but couldn't find anything in the documents. Now I can sleep tonight lol. Thanks!

[mstarktv]

Just in case anyone is reading this. I thought that when I did the name change, it was handled automatically. What I mean is that, I thought by simply doing the "Temperature>>>temperature" that it would convert it and down the line I would just use "temperature" from then on.

But, it's the opposite - meaning(for me at least) you still have to use "Temperature" but because of the name change, Houdini will see Temperature as temperature. So the name change is almost acting as a mask or proxy name.

My renders weren't showing anything, and then when I put it in the way I described; it started working