Hello!

I'm trying to execute a function after a render "in background" has finished (on nodes like mantra or filecache).
I can launch the "Render to Disk in Background" in python using something like:
But I don't know how to have a callback or something when the render is over.
Does somebody know how to do it?
Thanks!

ROP nodes offer a Scripts tab where you can execute code before/after the render of the frame. Take a look there.

Interesting, I didn't know. The "filecache" and "mantra" node indeed have a Script tab (sadly not the rop_alembic node).
The Scripts do work in "Save to Disk", but in both nodes they don't activate in "Save to Disk in Background" it seems...

Aquakwak
The Scripts do work in "Save to Disk", but in both nodes they don't activate in "Save to Disk in Background" it seems...

They do, but in the background. Are you looking for a way to execute scripts in the foreground when a background task completes? I think the only way would be to use a PDG task graph.

Hi! Thanks for the answer.
Do you know how to debug "background" task? In terminal or inside houdini's Python Shell I have no result for prints to see if it's working or not.
Also like you said executing scripts in foreground looks interesting, do you know where I can find tuts or infos about PDG task graph? It's the first time I hear about it and I don't find much online.

Thanks!