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Resolved Strange stains when bake light

Discussion in 'Global Illumination' started by Toonas, Oct 12, 2020.

  1. Toonas

    Toonas

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    Sep 4, 2017
    Posts:
    19
    Hello, community! I have a problem with baking light in hdrp. upload_2020-10-12_17-34-34.png upload_2020-10-12_17-37-46.png
    As you can see, all objects on the scene have strange stains when I bake light.
    If turn off filtering, the result is very bad.
    upload_2020-10-12_17-42-28.png upload_2020-10-12_17-42-44.png
    How can I fix it?
     
    Toonas, Oct 12, 2020
    #1

  2. kristijonas_unity

    kristijonas_unity

    Unity Technologies

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    You'd need to use way more samples to reduce the noise.

    How's the scene illuminated? Are you using emissives, punctual lights, area lights?
     
    kristijonas_unity, Oct 12, 2020
    #2
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  3. Toonas

    Toonas

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    I'm using punctual lights only.
    I will try to enlarge count of samples.
     
    Toonas, Oct 12, 2020
    #3

  4. kristijonas_unity

    kristijonas_unity

    Unity Technologies

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    Try increasing indirect samples first, and see if that helps. Also, make sure that your lights are not using high indirect intensity values, as that can contribute to noise.
     
    kristijonas_unity, Oct 12, 2020
    #4
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  5. Toonas

    Toonas

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    So, I enlarged all samples and baked light. It helped. The result less noiser, but still have noise.
    upload_2020-10-12_19-50-46.png
    upload_2020-10-12_19-51-3.png
    upload_2020-10-12_19-55-15.png
    Light properties:
    upload_2020-10-12_19-52-36.png
     
    Last edited: Oct 12, 2020
    Toonas, Oct 12, 2020
    #5

  6. kristijonas_unity

    kristijonas_unity

    Unity Technologies

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    This is strange. With these sample counts, you should be getting relatively smooth results, even without filtering. Perhaps in your scene, you have a light that's very hard to get to, and it is not directly visible? Such case would be difficult to sample, thus the increased noise.

    Also, have you made sure that you are not using baked emissives by mistake? Emissive materials are typically very hard to sample, and will cause a lot of noise.
     
    kristijonas_unity, Oct 13, 2020
    #6
    Toonas likes this.

  7. Toonas

    Toonas

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    So, I solved my problem. The problem was in extremely large objects that I used for walls, floor and ceiling. Now I'm using something like a tiles.
     
    Toonas, Nov 9, 2020
    #7
    kristijonas_unity likes this.