Help Needed on SOP TOP Convertion and Rendering

This would be my first topic. Happy to join the big TD family!

I am a very beginner and now I have a workflow where I want to created a fire(or plasma) op and hopefully convert it into a geometry and render it with another geometry which is an eyeball.

I was able to create the plasma using the Nvidia Flow op however it is a TOP, which I cannot convert it into a geomoetry. My current approach is connecting it to a trace SOP but that flattens it to 2D. I am sure there are other more appropriate ways to do that. Appreciate any and all suggestions!

Thank you!



Hi @hteane,

you could setup the Nvidia Flow Emitter COMP to use either the eyeball extracted from the geometry you have, or a Sphere SOP placed at the same position as the eyes in your model.

The Nvidia Flow TOP takes as it’s first input a background which could be the Render TOP of your scene, and as a second input a Depth Map which can be retrieved via the Depth TOP from the Render TOP.

In the end this is a compositing process.

The depth compositing seems to be a bit coarse right now - I’m inquiring if there are ways to make this smoother.

cheers
Markus
flowDepthMap.tox (2.9 KB)

Thank you so much Markus @snaut ! The information is very helpful. I will try it out later.

For now I had two layers of composition from 3 Render TOP inputs (eyeballs, model and NF emitter) with different draw priorities which works but the 3D/depth relation between the eyeballs and fire is sort of simple.