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How do I add an "emission volume channel" to a VDB?

RexRedRexRed Posts: 1,338
in Technical Help (nuts n bolts)

How do I add an "emission volume channel" to a VDB?

The new Daz Studio is out with a new VDB emission channel feature.

I have a lot of VDBs without this emission channel. I thought I would just be able to load these emission volume channels.

from other VDBs but there is nothing there and no way to load a channel.

How and where do I create these channels on a VDB? Can channels from other VDBs be loaded and how do I do that?

And it seems there is only one color option. What about gradient colors, is this even possible?

I find this feature very exciting.

I am wondering what is really happening here. Is this a colored object that is embedded within the VDB or is this emission VDB particles that are colored?

Has anyone found any documentation on this subject? Much appreciated thanks in advance for any info on this.

Comments

  • Richard HaseltineRichard Haseltine Posts: 100,961

    The VDB has to be created with a suitable channel (Fuel, temperature etc.) - which usually means using a specialist simulation application. They cannot be retro-fitted as such.

  • RexRedRexRed Posts: 1,338

    Richard Haseltine said:

    The VDB has to be created with a suitable channel (Fuel, temperature etc.) - which usually means using a specialist simulation application. They cannot be retro-fitted as such.

    Thanks Richard for that great information! Fluidos II has fuel and temperature parameters, I am not exactly sure how one would translate those parameters into color channels for use in Daz.

    Blender also has fuel and temperature parameters for smoke and fire as does embergen.

    I wish there was a Daz tutorial to help get started on this one.  smiley

  • GordigGordig Posts: 10,060

    In my experience, any field can be used for emission. The only trouble I'm having right now is getting a clear separation between the smoke and emission.

  • Richard HaseltineRichard Haseltine Posts: 100,961

    Gordig said:

    In my experience, any field can be used for emission. The only trouble I'm having right now is getting a clear separation between the smoke and emission.

    That is why I said as such - yes, you can make any channel into an emitter but the results may well not look so good if you wanted a realistic flame effect (great for glowing magical mists, though).

  • RexRedRexRed Posts: 1,338
    edited November 2023

    Gordig said:

    In my experience, any field can be used for emission. The only trouble I'm having right now is getting a clear separation between the smoke and emission.

    I am now using Embergen to make my volumes and much more. 

    I am assuming that I can create things in Embergen that Daz cannot load or display but I am too new at this to know exactly what those things are yet.

    EmberGen comes with a ton of free tutorials, so learning it is easy.

    Smoke, fire and particles. I will be learning which of these Daz can accomodate.

    I will be making some long form tutorials on YouTube once I figure some of this out.

    My YouTube channel @ez3dtv  

    My main interest in this is coloring smoke with gradients.

    I can place a gradient color on a ghost mesh within a VDB but I would rather the particles of the smoke emit a gradient color instead.  

    Post edited by RexRed on
  • RexRedRexRed Posts: 1,338

    RexRed said:

    Gordig said:

    In my experience, any field can be used for emission. The only trouble I'm having right now is getting a clear separation between the smoke and emission.

    I am now using Embergen to make my volumes and much more. 

    I am assuming that I can create things in Embergen that Daz cannot load or display but I am too new at this to know exactly what those things are yet.

    EmberGen comes with a ton of free tutorials, so learning it is easy.

    Smoke, fire and particles. I will be learning which of these Daz can accomodate.

    I will be making some long form tutorials on YouTube once I figure some of this out.

    My YouTube channel @ez3dtv  

    My main interest in this is coloring smoke with gradients.

    I can place a gradient color on a ghost mesh within a VDB but I would rather the particles of the smoke emit a gradient color instead.  

    Is there another thread somewhere where people are discussing VDBs and this new feature? You know learning this on the Daz forums is near impossible. 

    The video on this feature is so short, trying to use this new feature and there is no help at all... frown

     

  • RexRedRexRed Posts: 1,338

    RexRed said:

    RexRed said:

    Gordig said:

    In my experience, any field can be used for emission. The only trouble I'm having right now is getting a clear separation between the smoke and emission.

    I am now using Embergen to make my volumes and much more. 

    I am assuming that I can create things in Embergen that Daz cannot load or display but I am too new at this to know exactly what those things are yet.

    EmberGen comes with a ton of free tutorials, so learning it is easy.

    Smoke, fire and particles. I will be learning which of these Daz can accomodate.

    I will be making some long form tutorials on YouTube once I figure some of this out.

    My YouTube channel @ez3dtv  

    My main interest in this is coloring smoke with gradients.

    I can place a gradient color on a ghost mesh within a VDB but I would rather the particles of the smoke emit a gradient color instead.  

    Is there another thread somewhere where people are discussing VDBs and this new feature? You know learning this on the Daz forums is near impossible. 

    The video on this feature is so short, trying to use this new feature and there is no help at all... frown

     

    I figured it out...

     

    Watch for a video on my channel.

    YouTube @ez3dtv 

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