FastSSS2 and GPU Issues

[ryan_companies]

I'm running into a issue with FastSSS2 and Color Management with GPU, this is the error message:

// Warning: V-Ray : Unrecognised texture color space scene-linear Rec 2020, disabling color corrections


My Maya color management settings are at default, Vray render settings are also at default so it's not something I tweaked unknowingly. In the attribute editor of the texture file Color Space is greyed as well and I can't manually change it. Any ideas? Is this just a current limitation with GPU rendering and FastSSS2?

[ryan_companies]

Forgot to attached screen shots

[hermit.crab]

Does this happen in every scene and with a textured VRayMtl for example? Is your color management (Windows>Settings/Preferences>Color management) enabled? Maybe the Rec 2020 profile in question is missing in the configuration files.

[ryan_companies]

No, this is the only file I've ever had issues with. I did disconnect all the file nodes and created new ones with the same texture maps and that allowed me to change the Color Space (this was a purchased model and the material was not created by me). The Rec 2020 error is now resolved but still having the same rendering results as before. I'm happy to send the file over if you'd like to take a look?

[francomanko]

I have this issue too. Ive attached a video. The problem occurs after the lightcache is created, it looks fine then flips.

[hermit.crab]

Please, attach the scene here or send it to support@chaosgroup.com so we can take a look. Mention this thread in the e-mail along with a log and your V-Ray and Maya versions.

[ryan_companies]

Thank you, I've sent the file off to Support.

[hermit.crab]

Thank you for the provided scene. The culprit seems to be the "Invert" option in the Diffuse Amount map. I've logged the issue (internal bug-tracker id: VGPU-5033) for developer analysis. Inverting the map beforehand seems to resolve the issue.