Render Region samples go to insane numbers?

[Hurricane046]

Hello,

whenever I'm using "Render Region" in the Live Viewer I get huge amount of samples for that particular area. It uses my GPU beyond the desired amount of samples (400 in this case) and it gives me more samples than desired in that particular area (the final result at 400 samples may look worse but I'll never know unless I sample the whole frame).



Perhaps I'm missing something but I'd assume the Render Region should go to 400/400 and then stop sampling It kinda slows down my workflow when Octane is busy working on undesired amount of samples.

Thanks for any kind of help!

[aoktar]

It's how works the functionality in the renderer core. Not much things to avoid it from plugins. I believe it's reshaped for seeing at full quality in minimal time not doing patches on regions.

[bepeg4d]

There are two options/icons for Render Region.

• the red Render Region option is designed to refine a portion of a finished render that still has noise in it.
  The max sampling value is not taken into consideration, so the kernel can be stopped when noise has been cleaned up.

  

• the green Film Region option is designed to render only a portion of film buffer at Max Sampling value defined in the Kernel settings, with black background.

  

ciao Beppe

[Hurricane046]

Thank you very much for the feedback, especially you bepeg4d for the explanation. Now I understand why Render Region does what it does and the Film Region does exactly what I wanted.

It's a bit shame that the Film Region ERASES everything else from the LV so you kinda loose context of other objects in the scene so you either go back to Render Region (because RR keeps the stuff outside the selected area) or sample the whole scene. Either way Film Region is a nice step forward for me!