I would like to render just a portion of an image, say by giving bounding box XY pixel coordinates, and then replace that portion of the image on a full resolution image that I have previously rendered. For instance, I would render out an image, then I would realise I made a mistake in just an isolated area of the image - I would like to render just that part and “swap” it out with my new rendered portion to fix it.
I looked at rpiece and pcompos, which I think can do the job, but it seems quite manual, and in particular I would like to reuse the .rif file I use with rad so that all the settings are identical. Does anyone do this regularly and how do you do it?