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Bug Raytracing and Translucent materials

Discussion in 'HDRP Ray Tracing' started by sqallpl, Jan 10, 2023.

  1. sqallpl

    sqallpl

    Joined:
    Oct 22, 2013
    Posts:
    384
    Unity 2021.2
    HDRP 12.1.5

    When Raytraced Global Illumination is enabled materials that are set to "Translucent" are not using scattering distance and transmission tint values for indirect lighting.

    Looks like they completely ignore these values for indirect lighting. This happens in all tracing modes (Ray Tracing, Ray Marching, Mixed).

    I'm not sure but it looks like there is no transmission of indirect light at all. Transmission works for directional light but not for indirect lighting.

    Is this a known limitation or a bug? Maybe it's an old bug and it was fixed in the latest releases?

    Directional light is disabled here. You can see that the red tint from transmission in the diffuse profile is completely ignored when Global Illumination is enabled.



    Thanks.
     
    Last edited: Jan 10, 2023