OTOY Forums

Hey!

I'm trying to do multipass rendering with octane, and I'm exporting the Denoised passes with 32 exr to Nuke. I'm trying to adding up the passes, but they just not add up. Especially the denoised volume pass. (DenoisedSumWithVolume image)

Am I missing something, or this is not working properly?

I attached the denoisedBeauty (for comparation). I add togather the other denoised passes (merge over), but in the end, if I add the denoised volume, it will differ from the beauty. I attached an image of the Beauty minus the previous sum, and the differerence is visible comapred to the denoised volume.

Thanks
Daniel

This seems some kind of core issue or limitation. What Octane version are you using? Can you send us the scene to reproduce the problem here?

Thanks,
-Juanjo

Hey Juanjo!

Sure! Let me know if I'm doing something wrong.

This is my current config:
Plugin: 2020.2.4
API: 2020.2.4
Houdini HDK version: 18.5.532

I packed up the scene into an orbx file, you can find it here: https://drive.google.com/file/d/1964hoku80odabaUzTwZVEYIvzvVcM6mz/view?usp=sharing

Okay, I think I figured it out.
So what happened, is that the denoised volume pass had an alpha, and I thought (becasue in houdini, under the passes subgroup they were grouped togather), there were all the denoised passes, I thought that if I just merge/plus everything togather in Nuke, I should have a correct result. (only denoised)
But I realised, that the denoised volume's alpha is bad (or if it is not bad, I don't know why it contains the other background geometries alpha), and under the non denoised passes, there is the volume mask option, and using it as a mask for the merge, and then plus it, I got a correct result.

Probalby my bad, but an updated documentation would be great for this I think.