Is denoising (or going to be) a switchable on/off effect in framebuffer ? Or how does it work currently ? Hopefully you don't need to render twice if you want both versions.
It seems to be a full post production. If it is like this, it should be great to have it as a separated channel, or if it is possible, as a post production tool.
Yeah it seems like it is post and judging from passes used (and from my limited knowledge of that tech) it seems somewhat similar to what Altus Denoiser does.
Separate filtered\unfiltered channel are there already but for now they aren't exposed in render elements selection list for some reason - yet if you save an VFB\EXR dump, there you have both Beauty (unfiltered) and Main (filtered) beauty passes to mix them to your heart's content ))
Yeah, it would be nice to have some post render controls for that noise reduction but even as it is, it's totally amazing and can help save a lot of time and I mean A LOT by that ))