enter image description here

I can't figure out why my smoke looks like this. It has weird artifacts and looks like it was rendered on 144 resolution. This was actually rendered in 2560 x 3840. I also used 400 samples and I'm using cycles.

Here are the domain settings enter image description here

And here are the emitter settings enter image description here

I've done a few simulations that have turned out perfect, but this one is just not working.

Edit: so I increased the domain resolution but the wisps look weird now. They looks low res also. Is there a way to get rid of the wisps. Maybe increasing the density or something.

enter image description here


2 Answers 2


You can:

  • Increase the domain's Division value (this will change how the smoke simulates, interacts and looks and will increase simulation time)

  • Turn on Smoke High Resolution (this will introduce noise into the simulation to add detail, more info in manual).

  • Check if the domain material has Cubic set for it's voxel interpolation (should be by default):

    enter image description here

Volumetric domains are like raster images but in 3D. Imagine rendering a low resolution texture close to camera on a FullHD render - no matter what you do, even if you go to 4K, the texture would still render as ugly blob.

  • $\begingroup$ I increased the domain resolution but the wisps look weird. I edited the post and added a picture. $\endgroup$
    – altheconda
    Jun 10, 2018 at 23:07
  • 2
    $\begingroup$ @AlexPensotti If you don't want the wisps, you need to simulate with lower divisions and rather turn on High Resolution, that should give you the look you are after. $\endgroup$ Jun 11, 2018 at 9:24

just quickly flying through. I found this and it might help. It's under Render Properties in Volumes. Step Size set to lower than original 0.1 m solved my issue with the same looking cubic smoke. Try it and let me know if it had worked for you too. Cheers! enter image description here


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