Viewport interactive rendering + GPU + Denoise at first sample

[romullus]

Since I don't have a compatible GPU, can anybody please confirm if the new Intel GPU AI denoiser in interactive resolves the image similarly to how the Open image denoiser in Cycles does it? Or is it that Corona, by default, does not start denoising at the first sample and it is irrelevant what denoiser we use?

I don't know how the OIDN denoiser works in Blender, but in Corona interactive it works the same way as Optix does. Subjectively it feels like the former does smear result a little bit less than the latter, but the difference is quite subtle.

[Dalton Watts]

Thanks Romullus! I guess that the essential part is really the ability for the user to select "Start Sample" as Blender has (see image in attachment)

Also, Arnold has OIDN, and the way it blurs the image is very similar to Cycles. I don't know if Arnold also has the "Start Sample" option because I don't use it.

[Avi]

You might want to change IR subsampling number depending on preference between speed vs quality.

[Dalton Watts]

Hi Avi. That's the way I have worked for years now. Finding a balance depending on scenes. I was just curious to know how OIDN worked in interactive and if it started denoising sooner than Optix.