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Question Subsurface scattering shadergraph has purple hued preview, but material works fine?

Discussion in 'High Definition Render Pipeline' started by nassredean, Aug 16, 2022.

  1. nassredean

    nassredean

    Joined:
    Oct 6, 2013
    Posts:
    2
    I'm not sure if this is a bug, or if there is something I am missing about using subsurface scattering in a material. When creating a ShaderGraph in the HDRP whose Material Type is SubsurfaceScattering, applying a diffusion profile, and then linking the diffusion profile to the global HDRP settings, I still see a purple tinted preview both in the shadergraph preview and the material preview:

    Screen Shot 2022-08-16 at 11.57.59 AM.png

    As you can see, the material appears to be working properly in game, both in edit/play views. But despite this, the previews render purplish. I followed the instructions here: https://docs.unity3d.com/Packages/c...nition@14.0/manual/Subsurface-Scattering.html to setup my project/scene for SSS. The documentation mentions this problem and states that it occurs when the material doesn't have a diffusion profile assigned, or when the diffusion profile is not valid because it is not linked.

    This is despite the fact that I have linked the diffusion profile:

    Screen Shot 2022-08-16 at 11.56.01 AM.png

    so I am not sure what I am missing. Is this a bug?
     
    nassredean, Aug 16, 2022
    #1

  2. nassredean

    nassredean

    Joined:
    Oct 6, 2013
    Posts:
    2
    I'm pretty sure this is in fact a bug. I should mention that this also happens when creating a SSS material directly, and not using a custom shader. I am using 2022.2.0b4.2768. As an experiment I tried doing the same thing in a 2021 version of unity and it works correctly.
     
    nassredean, Aug 17, 2022
    #2