OTOY Forums

Hi,
i'm editing a volumetric object and if i change anything inside procedural, IPR wont update until i reload scene.
Is there a way to have realtime feedback ? It's a bit difficult to tweak clouds otherwise.
Thanks,
Paolo

Hmm, nope sorry. Reloading the volumes usually takes a lot of time, so the realtime feedback of the procedural volumetric shader is not possible. You are going to need to reload by hand after each change.

Thanks,
-Juanjo

ouch, some hard work in front of me then
thanks
Paolo

Have you seen the VDB based cloud libraries available from several sites? Rendering VDB files is a lot faster in Octane because they are loaded at render time by the Octane core, so perhaps they could help in your projects. Remember that the volumes and VDBs can also be instanced to build complex cloud scenes.

I'm talking about something like that, for example:
https://cubebrush.co/byvfx/products/xyc ... vdb-clouds

Thanks,
-Juanjo

Hi Juan, thank you for headup, i'll try these, which seem nice.
I tried other VDBs from the web but i have no clue about how to setup/use them, just loading into Volumetric object does nothing and it would be useful to see a tutorial about what does what - if there is any, maybe i missed it

Thanks

Rendering VDB object should be easy, you only need to configure the file, the vdb grids that you want to render and add a medium material in the volumetrics node editor.

Hope it helps,
-Juanjo

thanks again, gonna give it a run asap
Paolo