Is there a way to disregard refraction when calculating denoise?

[rusteberg]

asking for a friend....

[hermit.crab]

Not directly, but you can mask the VRayDenoise AOV in post by setting mattes for the refractive objects.

[rusteberg]

mask AOV in post by setting mattes? do tell.

[rusteberg]

i masked it manually for the time being in post using mat id..... interested in learning more about this aov character.

[rusteberg]

Reason I ask is because I'm trying to solve multiple light sources through a heavy dialectric (low e glass)

On a volume shell quick render/draft for review we noticed some lag in the refraction when denoising.... diffuse, reflect, spec clean hella quick, but the refractive lags and seems to pull a lot of weight if that makes any sense....

[vladimir_krastev]

HI you can try using the standalone denoiser tool

https://docs.chaos.com/display/VMAX/Denoiser+Tool

With it you can denoise render elements of your choice and then use in post production.



You will have to set your VRayDenoiser to only generate render elements so no denoising will happen unless you do it manually with the standalone denoiser tool.

[hermit.crab]

mask AOV in post by setting mattes? do tell.

Since the original RGB (non-denoised) is usually saved together with the VRayDenoiser element (or/and effectsResult), you can create mask for the refractive objects (with a i.e. MultiMatte/Cryptomatte/etc.) with which to mask out the denoised refraction (the underlying layer should be the original RGB). The method vladimir mentioned is also adequate - you can comp the RGB with the non-denoised VRayRefraction.

[rusteberg]

Thank you both for explaining that! : )