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  1. Replies
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    If you change the number of reflection samples...

    If you change the number of reflection samples you can clearly see the change in the brightness of the reflection. Strictly speaking, it is a combination of reflection samples and antialiasing.
    ...
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    Most of it has already been said but perhaps...

    Most of it has already been said but perhaps misunderstood or rejected:

    If you use an Environment Light, you should use "Raytrace Only" in the Shading Model (as described in the manual)....
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    Hi, I am no mathematical expert, but, if I...

    Hi,
    I am no mathematical expert, but, if I remember right, all your values are nearly zero (6,4403e-05 is 0,000064403 and -7,235e-05 is -0,00007235).
    Hope it helps.
    ciao
    Thomas
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    Hi, the weird number in the box is the sensor...

    Hi, the weird number in the box is the sensor height not the diagonal.
    So you have to know the real dimensions of your sensor.

    ciao
    Thomas
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    Hi, there is a "Save Endomorph..." command in...

    Hi, there is a "Save Endomorph..." command in Layout too. Do not forget to save your object too!

    ciao
    Thomas
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    Hi, to match the FOV (field of view) you need...

    Hi,
    to match the FOV (field of view) you need the same focal length and sensor size, resolution does not matter (frame aspect ratio does, of course).
    In Lightwave you can set the sensor/frame...
  7. Hi, the Diffuse_Direct buffer, for example,...

    Hi,
    the Diffuse_Direct buffer, for example, contains all direct lit surfaces. With Light Groups you can split this buffer up corresponding to the individual lights. As a result, the chosen light...
  8. Hi Martin, this is the way how it was indent to...

    Hi Martin,
    this is the way how it was indent to work. Any light buffer will have their contribution removed from the main buffer. In this scene all Diffuse_Direct and Specular_Direct contribution is...
  9. It is very difficulte to find the "missing link"...

    It is very difficulte to find the "missing link" without a real scene. So I loaded the "OpenVDB_Explosion-Blackbody_Radiator_Node.lws" scene from the LW18 Content and added a ground plane. I enabled...
  10. One more thing: Ray Recursion Limit must at least...

    One more thing: Ray Recursion Limit must at least be 2.

    ciao
    Thomas
  11. Hi, to lit your sourroundings with emission of...

    Hi,
    to lit your sourroundings with emission of your VDB you need to enable Volumetrics (Render Properties/Volumetrics tab), GI and Sample Backdrop (Render Properties/Global Illumination tab). To...
  12. I did not test it, but you can save one frame or...

    I did not test it, but you can save one frame or an animation (what is in reality a sequence of VDB files). What I would like to see is a "VDB player" with time control to retime the animation of...
  13. Hi, only thing that comes in my mind is to save...

    Hi,
    only thing that comes in my mind is to save the VDB on a particulare frame and load it back again (with the "Saver" - node).
    ciao
    Thomas
  14. We also used this method many years ago in LW11. ...

    We also used this method many years ago in LW11.
    Unfortunately this setup doesn't work in LW 2019 so easy anymore. First, you don't have "pure" shaders (Lambert, Phong...) anymore, just materials....
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    Hi, if you use the "Real Lens Camera" it might...

    Hi,
    if you use the "Real Lens Camera" it might be come from the "Irradiance falloff" settings (Real Lens Camera properties). Change it to 0.

    ciao
    Thomas
  16. Hi, I see two things in your node setup: To...

    Hi,
    I see two things in your node setup:
    To remap the range from -0,5 to 0,5 from the normal map to -90 to 90 for the rotation you need to scale the vector with 18000% (multiply with 180). And...
  17. Thread: clouds?

    by Thomas Leitner
    Replies
    240
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    20,438

    I really like the shape of your clouds. I never...

    I really like the shape of your clouds. I never get them so well (that's why I want better cloud - textures).




    Unfortunately, the manual is not very informative about this. My tests seem to...
  18. Thread: clouds?

    by Thomas Leitner
    Replies
    240
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    20,438

    Distant and Environment light still dont work...

    Distant and Environment light still dont work with volumetric scattering. I use a volumetric primitive (cube) as medium for light scattering.



    Yes, I would also render in terragen. It's just a...
  19. Thread: clouds?

    by Thomas Leitner
    Replies
    240
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    20,438

    Yes of course , esspecially as we had this since...

    Yes of course , esspecially as we had this since years in the old HyperVoxels.



    The OpenVDB is from this site:
    ...
  20. Thread: clouds?

    by Thomas Leitner
    Replies
    240
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    20,438

    Because we mainly do VFX we rarely have to render...

    Because we mainly do VFX we rarely have to render clouds.
    Although we do sky replacement, but therefor mainly photos are used.
    Where we need 3D clouds are shots with a flight through the clouds or...
  21. Great script Oliver. Now, back to the other...

    Great script Oliver.

    Now, back to the other topic (cloud): I did a test with the Disney wdas_cloud_half.vdb, too.

    142158

    I dont think that you can get the quality of the hyperion renderer...
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    Because I did the simulation in TFD 2 years ago I...

    Because I did the simulation in TFD 2 years ago I do not remember all the details of the process. But the emitter object was modelled very quick and rough and of cause needs more love...



    I did...
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    Hi, TFD allready can export to OpenVDB. Here is...

    Hi,
    TFD allready can export to OpenVDB.
    Here is a test we have done. Simulated in TFD and rendered in LW 2018:

    142019

    ciao
    Thomas
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    Hi, a standalone application seems the wrong...

    Hi,
    a standalone application seems the wrong direction for me: I want a integrated solution. That is the power of TurbulenceFD for Lightwave. If we have to use an other application for fluid...
  25. Thread: clouds?

    by Thomas Leitner
    Replies
    240
    Views
    20,438

    Hi, I used LW 2018.2 (paid version of course)...

    Hi,
    I used LW 2018.2 (paid version of course) for this. However, I did another quick test in LW 2018.1 and it's the same (is even 11% faster). VPR works normal here.

    ciao
    Thomas
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