Material with Subsurface Scattering appears black in Planar Reflection

Hey, I just upgraded to HDRP 10.4 + Unity 2020 LTS. Everything works great so far, but encountered an issue I could not solve: All shaders with Subsurface scattering appear black in planar reflection probe. in HDRP 7.5 the issue was not present; materials with SSS looked a bit weird, but not black.
Is there anything to prevent this from happening?

Small Update: I found out that we can change HDRP properties for Reflections separately. If I switch of Subsurface Scattering for Realtime Reflections, Materials appear “normal” (albeit of course without Subsurface Scattering). So it seems to be a bug in HDRP ?

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Hello, thanks for the feedback. I managed to easily repro your issue and logged something.
I’ll keep you updated here of any advancement.

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Sounds good, thanks. I am glad I don’t need to build a repro project :wink:

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@chap-unity
One more observation: SSS does also not seem to work if I switch scene view to 2D. Same effect, material turns black.

Hey, this one is known and expected.
2D Mode in scene view is using isometric projection and unfortunately as of today HDRP, for performance reasons, doesn’t support this mode. (only perspective)

You can use it overall but you will get various lighting issue on transparent, wrong volumetric, wrong planar reflection… and unexpected results. The reason is

Ah, okay. It’s just that it wasn’t that apparent in HDRP 7.5, as in that case probaly the SSS was just not rendered. Now the materials using SSS turn black. Not a big deal for me, as I use 2D mode only for weight painting on cloth.

Thanks for the report. Fix is coming: https://github.com/Unity-Technologies/Graphics/pull/3919

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