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Rendering ROI?

PostPosted: Thu Feb 18, 2021 6:44 pm
by ladlon
I can't seem to figure out how to render just the Region Of Interest.

I want to do a test render of a particular part of a shot, so that the file size is small.

I can define a ROI, but am not sure how to tell the renderer to render only the ROI area.

How do you do that?

Re: Rendering ROI?

PostPosted: Sat Feb 20, 2021 6:28 pm
by Jacob Danell
If you're using the RoI tool in the viewer it's only for the viewer.
If you want to render out only a part you can use the crop tool but Fusion will process all the pixels above the crop node if any node requests all the pixels of the image (but I think the nodes does that also with the RoI tool...)

Re: Rendering ROI?

PostPosted: Sat Feb 20, 2021 10:42 pm
by ladlon
Thanks for the reply, Jacob Danell...

Ya, I had a feeling that's how they did things... Wierd. With other apps, you can do a whole 'render region' that works both in the viewer (speed up workflow/preview updating) as well as the render itself (renders just that area... both in terms of processing the image AND the resulting screen render size.

Yep, I did get around that currently by creating a small sized background, and merging the full size comp into that, so only a part of it was visible... and rendered that.

Seems a bit of work just to do that. Odd that they don't just have the ROI work in the render, too...

Ah, well...