Light Select and Intel Open Image denoiser

[thescopeteam]

Hello, we are currently testing the Intel Open Image denoiser in our workflow. when using the denoised bty and subtracting a light select pass we get ugly pixles. Without denoiser it works. Is there any workaround to fix this? It happens to visible light sources like in the example below or very bright specular highlights like from a sun for instance. It happens in Nuke and Photoshop as well. (16bit half-float multicchannel exr)



subtracted light select pass

[hermit.crab]

I cannot reproduce it; neither in PS nor in Nuke. Could you simplify the scene and attach (or send) it here?

[thescopeteam]

Hello, I found the problem, it's the aerial perspective in the scene, without it works fine, I mean would be nice if it would work with the aerial perspective as well

thanks Florian

[hermit.crab]

This happens because Render Elements (in your case VRayLightSelect) are denoised separately, which makes AI denoisers use different calculation patterns (hence why the comp is wrong). For now, you should abstain from denoising elements or use the V-Ray denoiser. We're going to fix this, eventually.

[thescopeteam]

I see, "eventually" would be really helpful