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Question RTGI DiffuseDenoiser breaking in low light/high contrast environments

Discussion in 'HDRP Ray Tracing' started by m0nsky, Oct 7, 2020.

  1. m0nsky

    m0nsky

    Joined:
    Dec 9, 2015
    Posts:
    257
    Hi guys,

    I've been running into this issue the past few days when using ray traced global illumination in low light scenes. It seems to denoise the 'bright' areas correctly, but introduces noise in the 'dark' areas. Is this perhaps something that can be improved by computing a different weight for the samples in DiffuseDenoiser?



    RTGI Denoiser disabled


    RTGI Denoiser enabled


    If you cycle between these images using your arrow keys, you'll notice the bucket gets denoised correctly, but noise gets introduced in all other areas.
     
    Last edited: Oct 8, 2020
    m0nsky, Oct 7, 2020
    #1