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VDB not showing inside an atmospheric haze cube

PitmaticPitmatic Posts: 995
in The Commons

I am trying to get a VDB to show up inside a regular cube primitive that is being used to create haze.

I have a huge cube primitive setup to scatter a bit of light to give an atmospheric haze and I had a VDB from VDB cloud collection for iray  which i am trying to use to suggest smoke coming out of a car.

The cloud VDB will not show up while the atmospere cube is in the scene at the same time.

 

 

 

Comments

  • acbacb Posts: 673

    I believe any overlapping geometry cuts its shape out of the VDB. In most cases, this isn't noticeable because the geometry is there. However, seethrough objects create a hole.

    I sometimes use it with spherical lights (with hidden emitter) in fog. This creates a circle where the fog is less dense and has a lit edge.

    You could maybe use another VDB for the haze? They don't interfere (as far as I know).

  • PitmaticPitmatic Posts: 995

    Thanks @acb I shall lok into it some more

     

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