Page 1 of 2
Is there a trick to getting VDBs to render when using Pyro?
Posted: Tue Apr 11, 2023 4:43 pm
by leave2
Hi, I'm experiencing instant crashes the moment I try to render a scene using a Pyro object and an Octane VDB.
Voxel size is 1.5cm, and it's just a simple smoke simulation of which I'm trying to render a single frame.
As soon as I render the image in the picture viewer, the counter doesn't even begin, it just hard locks the software. If I disable the VDB first, it renders fine.
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Tue Apr 11, 2023 7:15 pm
by aoktar
You dont need to use vdb for Pyro. You may have lot of voxels if it's crashing.
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Wed Apr 12, 2023 7:45 am
by bepeg4d
Hi,
no problems in rendering Pyro sim + extra VDB object here:
What happens if you render the VDB alone?
Is it working correctly?
ciao,
Beppe
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Wed Apr 12, 2023 8:38 am
by leave2
I did try to use the Object tag method, but the documentation links to a dead page, and I wasn't able to achieve anything other than a completely opaque black blob with no physical characteristics of any kind.
Is there a page that shows how to correctly use the object tag in relation to pyro?
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Wed Apr 12, 2023 9:26 am
by aoktar
leave2 wrote:I did try to use the Object tag method, but the documentation links to a dead page, and I wasn't able to achieve anything other than a completely opaque black blob with no physical characteristics of any kind.
Is there a page that shows how to correctly use the object tag in relation to pyro?
Trick: Let the Pyro calculated a few frames then put the tag. It will create and adjust the Standard Volume for you as your calculated channels. It will find for channel names by automatically
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Wed Apr 12, 2023 9:41 am
by leave2
Hey thanks, that's what I've been trying, but I'm still having no luck. It creates the smoke just fine, but it's just a dense, solid black. I can only make changes to the density, etc..
When you say "calculate a few frames", are you saying press play to let it run through the sim a little, or is there something else I need ot be doing?
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Wed Apr 12, 2023 10:04 am
by aoktar
See my settings, using correct channel names and having channels are trick
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Wed Apr 12, 2023 10:51 am
by leave2
Thanks dude, that's sorted out some of the blackness, my only remaining problem is getting it to render.. It shows in the live viewer, but doesn't show up in the picture viewer when I render. Tanks man!
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Mon Apr 17, 2023 5:35 pm
by leave2
HIya
Still stuck on this I'm afraid.. when I copy your settings, it looks much better, and it's visible in the render preview, but when I render in the picture viewer it isn't there.
Re: Is there a trick to getting VDBs to render when using Pyro?
Posted: Mon Apr 17, 2023 7:45 pm
by leave2
Weird, now it's suddenly working!