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Volumetric Effects in Daz Studio.

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  • RobotHeadArtRobotHeadArt Posts: 917

    The offical Iray documentation for VDBs https://raytracing-docs.nvidia.com/iray/manual/index.html#volumes#inhomogeneous-volumes

  • WendyLuvsCatzWendyLuvsCatz Posts: 38,484

    when Oso3D makes a shader I will buy it cheeky

  • Richard HaseltineRichard Haseltine Posts: 102,236
    edited February 2022

    The Daz Default Shader is usually the old, basic, 3Delight shader.

    Post edited by Richard Haseltine on
  • Richard HaseltineRichard Haseltine Posts: 102,236
    edited February 2022

    AllenArt said:

    Could someone point me to where I can find this "scene" file? I've looked everywhere and the only thing I've found even remotely similar is something in the scene folder for smoke volume, which I'm pretty sure is for 3DL.

    http://docs.daz3d.com/doku.php/public/software/dazstudio/4/change_log#4_15_1_90

    An update to the 'Default Resources' package (once released) includes a Shader Preset with said Shader Mixer network prebuilt, ready to be applied

    Post edited by Richard Haseltine on
  • Richard HaseltineRichard Haseltine Posts: 102,236

    barbult said:

    Where does the "Daz Default Material" shader used in the jag11 sample scene come from? Did jag11 build it in Shader Mixer, or is it included some place in DS 4.16.1.43?

    Rhetorical question: Why dioes Daz put so much effort in to adding features to DS and not bother to inform users of how to find and use those features?

    Well, Daz did provide the information - in the change log entries I pointed to (when prompted). And, as noted, there will be a shader preset to apply the basic set up - but that isn't going to be made available in the default resources while it isn't working in the General Release as that would just cause confusion.

    Edit: Eereading through the first page of this thread (now that I have some experience with using this, it makes some more sense), I think what happened is that jag11 read the change log and created the shader used in the example. I think maybe a shader will be included in the DS Default Resources when the beta is promoted to release.

    Exactly

  • barbultbarbult Posts: 24,723
    edited February 2022

    This VDB stuff is pretty neat. I don't understand it very well yet, but I can download VDB files and fiddle with settings. I added volumetric smoke 2 from OpenVDB to this campfire scene.

    Campfire scene volumetric smoke 2_001_Camera.jpg
    2600 x 2000 - 5M
    Post edited by barbult on
  • barbultbarbult Posts: 24,723

    Richard Haseltine said:

    AllenArt said:

    Could someone point me to where I can find this "scene" file? I've looked everywhere and the only thing I've found even remotely similar is something in the scene folder for smoke volume, which I'm pretty sure is for 3DL.

    http://docs.daz3d.com/doku.php/public/software/dazstudio/4/change_log$4_15_1_90

    An update to the 'Default Resources' package (once released) includes a Shader Preset with said Shader Mixer network prebuilt, ready to be applied

    That's a link ot the change log, not the scene file that AllenArt is looking for. The scene file was posted by jag11 here in this forum. I already posted a message illustrating where she can find it.

  • WendyLuvsCatzWendyLuvsCatz Posts: 38,484
    edited February 2022

    you can create OpenVDB files in Blender from the particles too, if you save the scene and set up a cache

    there are oodles of tutorials on that on Youtube etc

    Post edited by WendyLuvsCatz on
  • barbultbarbult Posts: 24,723

    WendyLuvsCatz said:

    you can create OpenVDB files in Blender from the particles too, if you save the scene and set up a cache

    there are oodles of tutorials on that on Youtube etc

    That sounds interesting. 

  • MelissaGTMelissaGT Posts: 2,611

    Question...how is this any different than the volumetrics we've been able to purchase? Like AtmoCam, etc. 

  • AllenArtAllenArt Posts: 7,169

    I found it barbult. Thanks so much. And to you jag11 :) Unfortunately, nothing I do to the shader gets me what each of you are getting...that wispiness in the center of the rabbit. Everything I do just makes the rabbit lighter and lighter around the edges until I can't see it. LOL. Oh well, I'll get to it eventually :P

  • barbultbarbult Posts: 24,723
    edited February 2022

    AllenArt said:

    I found it barbult. Thanks so much. And to you jag11 :) Unfortunately, nothing I do to the shader gets me what each of you are getting...that wispiness in the center of the rabbit. Everything I do just makes the rabbit lighter and lighter around the edges until I can't see it. LOL. Oh well, I'll get to it eventually :P

    I had a lot of trouble with the rabbit bunny, too. Try one of the two smoke VDB downloads. They seemed easier to work with.

    Post edited by barbult on
  • WendyLuvsCatzWendyLuvsCatz Posts: 38,484
    edited February 2022

    the Embergen samples

    https://jangafx.com/software/embergen/download/free-vdb-animations/

    I wonder if Casual's Texanim will work?

    https://sites.google.com/site/mcasualsdazscripts/texanimfords3

    VDB not an image format so not sure if can use in a job file

    Post edited by WendyLuvsCatz on
  • AllenArtAllenArt Posts: 7,169

    barbult said:

    AllenArt said:

    I found it barbult. Thanks so much. And to you jag11 :) Unfortunately, nothing I do to the shader gets me what each of you are getting...that wispiness in the center of the rabbit. Everything I do just makes the rabbit lighter and lighter around the edges until I can't see it. LOL. Oh well, I'll get to it eventually :P

    I had a lot of trouble with the rabbit bunny, too. Try one of the two smoke VDB downloads. They seemed easier to work with.

    Thanks, I'll try that ;) yes 

  • JoeQuickJoeQuick Posts: 1,717
    WendyLuvsCatz said:

    when Oso3D makes a shader I will buy it cheeky

    Smells like a dimensiontheory product to me.
  • barbultbarbult Posts: 24,723

    Richard and the change log say that Daz will include a shader when they release 4.16.1 as the general release. There doesn't seem to be a need to buy one. jag11 has already created a shader included on a volume object in a scene posted here in the forum We can use it in the beta 4.16.1.43 right now.

  • jag11jag11 Posts: 885
    edited February 2022

    First attempt to simulate fire. Theres no way to make volume emissive, so I used a spotlight at the base

    fire.png
    1280 x 720 - 763K
    Captura de pantalla 2022-02-09 225538.png
    160 x 445 - 15K
    Post edited by jag11 on
  • WendyLuvsCatzWendyLuvsCatz Posts: 38,484

    Texanim won't work, I had to change the node name of the volume (chose X for it and the label instead of volume) to get the job to stop erroring but it doesn't render range

    Object X

    Surface Default

    Property Volume Channel

    Path D:\particles\Gasoline_Explosion_01\Gasoline_Explosion_01

    Prefix embergen_gasoline_explosion_a_10

    Padd 4

    Suffix vbd

    LoopStart 0

    LoopEnd 130

    First 0

  • WendyLuvsCatzWendyLuvsCatz Posts: 38,484
    edited February 2022

    oh and exporting an Octane scene in the Carrara plugin creates an assets folder that includes all the clouds as VBD files

    so yes I can export Carrara clouds

    Post edited by WendyLuvsCatz on
  • kyoto kidkyoto kid Posts: 41,198
    edited February 2022

    ...hmm I remember a few years ago creating a wet mist effect for a scene.  So with this I take it creating such an effect should be a lot easier. 

    Post edited by kyoto kid on
  • wolf359wolf359 Posts: 3,834
    edited February 2022

    Open VDB support is a major upgrade.

    I was told by a user in my Blender FB user group that the free version of Houdini apprentice can export simulations To VDB files.

    I have not had the time to download an learn Houdini Apprentice
    however the free sources of Open VDB have been a boon for us animators
    ,who use Blender, because they are supported in the realtime EEVEE engine
    I use them in alot of my sci fi animation rendered in EEVEE

     

     

     

    Post edited by wolf359 on
  • SickleYieldSickleYield Posts: 7,644
    edited February 2022

    Hi everyone! I have two products for this coming soon, one that's already through testing and one that's being tested now. SY Real VDB Fog Iray is larger ground/atmosphere pieces, and SY Real Facial Smoke Iray Genesis 8 is focused more on smoke/fog around the features of Genesis 8 Males and Females.

      

    @jag11 Oh interesting! I haven't tried this with fire yet! I've been planning to do a tutorial for making VDB fog/smoke in Blender once everything's pretty well finalized. That's how all of the pieces for my sets were done.

    sneak_preview__sy_real_fog_iray_vdb_by_sickleyield_dev39nq-fullview.jpg
    1280 x 1664 - 141K
    Post edited by SickleYield on
  • RobotHeadArtRobotHeadArt Posts: 917

    https://www.daz3d.com/forums/discussion/529616/daz-studio-pro-4-16-1-was-4-15-1-nvidia-iray#Comment_7122621

    • Emission has been added to the volumetric material properties.

    It would be great if we had the shaders available from DAZ to beta test these features.

  • WendyLuvsCatzWendyLuvsCatz Posts: 38,484

    I hope someone makes a script to import a series for animation too,

    I do know FLUIDOS can do it though so there is that option

  • Richard HaseltineRichard Haseltine Posts: 102,236

    SickleYield said:

    Hi everyone! I have two products for this coming soon, one that's already through testing and one that's being tested now. SY Real VDB Fog Iray is larger ground/atmosphere pieces, and SY Real Facial Smoke Iray Genesis 8 is focused more on smoke/fog around the features of Genesis 8 Males and Females.

      

    @jag11 Oh interesting! I haven't tried this with fire yet! I've been planning to do a tutorial for making VDB fog/smoke in Blender once everything's pretty well finalized. That's how all of the pieces for my sets were done.

    You deleted your second attachment, now it isn't showing an image for most people 9you see the cached copy)

  • RobotHeadArtRobotHeadArt Posts: 917
    edited February 2022

    PerttiA said:

    Could volumetrics give us transparent Iray ghost figure, without the inside surfaces on the backside showing?

     

    Here's a quick test of turning Tasha 8 into a volume.  Once we have the offical shaders and with a layering technique, we should be able to get more ghostly ghosts.  I think layering VDBs might be able to keep the features better. The VDB file was about 87MB but I didn't spend much time optimizing it.  I can't tell from the Iray render log how much memory that ends up using during the render process.

    VDB ghost.png
    500 x 650 - 502K
    Post edited by RobotHeadArt on
  • Oso3DOso3D Posts: 15,040

    What's the process of turning something into a VDB? And can it be rigged or is it strictly a rigid model at that point?

     

  • RobotHeadArtRobotHeadArt Posts: 917

    Oso3D said:

    What's the process of turning something into a VDB? And can it be rigged or is it strictly a rigid model at that point?

    You would need to use a 3D application that can convert geometry into a VDB.  For my example, I am using Houdini.  The VDB is static, there is no rigging information.  The volume information is basically voxels that have can have a value assigned to them, in this case it is density.  https://www.openvdb.org/about/

    In theory, you can have animated VDBs, where each frame is a different volume, but because DAZ implemented the VDB filename as a property of a shader and not something that can be animated I am guessing it will not be possible to have animated VDBs without the use of plugins or scripts to change the VDB on each frame.

  • Oso3DOso3D Posts: 15,040

    I can imagine some kludgy ways, maybe... hmm.

    Can Carrara or Zbrush convert geometry into VDB? (I think someone said Blender can, but I'm rather allergic to Blender)

     

  • WendyLuvsCatzWendyLuvsCatz Posts: 38,484

    Oso3D said:

    I can imagine some kludgy ways, maybe... hmm.

    Can Carrara or Zbrush convert geometry into VDB? (I think someone said Blender can, but I'm rather allergic to Blender)

     

    Blender can, the Carrara Octane plugin can

    Houdini and Embergen are the industry standouts for it though

    Blender users import those in preference to their own particles  

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