batch rendering Tweet

[Stassius]

Hello! In new 3.00.6 version we can make batch render with multiple rop nodes. Howewer it doesn't work as expected in Houdini. When you create a bunch of rop nodes and merge them all in one merge node you can press "Render" only on merge node to render all the rops above. But now when you press Render on merge node, Octane renders only current frame when rops have "Frame range" specified, so you still have to manually render each node.

[juanjgon]

Thanks for reporting. I will test this problem here.

-Juanjo

[Stassius]

Additional info. You can wire ROPs one by one to make an usual chain. In this case you can hit Render on last node and Octane batch renders all of them. However frame range not taken from each node - it takes it from only one of them. So every sequence is equal in frame range.

[juanjgon]

I have found the problem. By default the render buttons render the multiple ROPs frame by frame, something that is impossible in Octane due to the ROP node architecture (you can't have more than one scene initialized at the same time).

The solution is easy: you can render multiple ROPs (in a chain or with the merge node) if you open the "Controls" panel, select the render order "Node by Node" and press "Render".

I hope this helps.

-Juanjo

[Stassius]

Yes, but it still doesn't respect frame ranges specified.
I had two ROPs - one for 75 frames, another for 125.
Both were rendered as 125 frames.

[juanjgon]

You are right. I have fixed a problem perhaps related to this problem ... but anyway the main problem is that it seems a limitation of Houdini. I am testing a scene rendering two chained Mantra ROP nodes, one with a 5 frames range and other with 10 frames range, and both are rendered using the 10 frames range. If use the merge node I also get the same behavior.

Can you please check in your system if Mantra has the same problem, to be sure? I am testing H15.0.393

Thanks,
-Juanjo

[Stassius]

Sorry, it was my mistake. When you set Frame Range to (Strict) on every ROP node and then set "Node by Node" in Merge, then everything renders correct.
Hooray, problem solved! Thank you!

[juanjgon]

Sorry, it was my mistake. When you set Frame Range to (Strict) on every ROP node and then set "Node by Node" in Merge, then everything renders correct.
Hooray, problem solved! Thank you!

Ahh, thanks. Yes, this is the correct workflow to render multiple ROP nodes.

-Juanjo