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Realtime GI (Englighten) bug in 2019 (idk how to call it)

Discussion in 'Global Illumination' started by impheris, Jun 7, 2021.

  1. impheris

    impheris

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    Sorry i do not try to spam but i have another quiestion about realtime GI but in 2019 that i did not found any solution on internet and i do not know how to call it and maybe that the reason i did not found anything useful.
    The attached image shows my problem, i think is not a "leak"
    I have double sided materials, i already tried increasing the indirect resolution, i tried with different settings for the light (range and intensity)
    I can see the movement of the light trought the wall.
    Is there any fix? something i'm missing?
    Thanks for your help.
     

    Attached Files:

    impheris, Jun 7, 2021
    #1

  2. kristijonas_unity

    kristijonas_unity

    Unity Technologies

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    Are you using realtime GI or a combination of realtime GI and baked GI? Indirect Resolution value being set too low might be the most likely culprit. For indoor environments, we recommend values between 5 to 10. There could be other factors which might cause this, though.

    In either case, I would strongly recommend going through our official Realtime GI Optimization tutorial on Unity Learn. It will explain Enlighten-specific concepts in greater detail which will help you prevent issues like this in the future.
     
    kristijonas_unity, Jun 7, 2021
    #2

  3. impheris

    impheris

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    Hi thanks for the awnser.
    I´m using just Realtime Global Illumination, from "lighting" window, the other option is mixed lighting > Baked Global Illumination, but that option is unchecked.
    I tried with the indirect resolution up to 3 (those are the values the tutorial says) also i tired with 5 and the problem is still there, i also tried with a basic model (with UV map), 4 walls and one wall in the center, material are double sided, also the walls has thickness, i made some edge divisions on the top of the object where the center wall is (i saw that on a little video on youtube) and with all that i have the same problem.
     
    impheris, Jun 7, 2021
    #3

  4. impheris

    impheris

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    I was playing with the values of everything i can and i found the cause (in unity 2021). In the light's properties i have to set the range at least at 80, if a lower the value to 79, the bug appears. I made some videos.
    - The first one is with the bug (point light)
    - The second is without the bug (point light's range at 80) but with an unwanted illumination effect

     
    impheris, Jun 8, 2021
    #4

  5. impheris

    impheris

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    Are you there? i still need help or something
     
    impheris, Jun 11, 2021
    #5

  6. Pema-Malling

    Pema-Malling

    Unity Technologies

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    Hey.

    Could you post some screenshots using the enlighten-related scene view modes? (primarily 'Systems' and 'Clustering' - https://docs.unity3d.com/2019.3/Documentation/Manual/GIVis.html)?

    Other than that, it sounds like you have a fairly solid reproducible scenario, so I suggest filing a bug report.
     
    Pema-Malling, Jun 14, 2021
    #6

  7. impheris

    impheris

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    Hi, thanks. I just reported the bug. I'm using unity 2021.2 because i thought it was a bug from that version but nope i have the same bug.
    In screenshots you can see "systems" looks very... pink i do not know why, i also take a screenshot of "Lit Clustering" just in case.
     

    Attached Files:

    impheris, Jun 16, 2021
    #7

  8. AcidArrow

    AcidArrow

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    Since it seems you are using Enlighten, I believe you have stumbled upon the missing feature of realtime indirect shadowing (there should be a note on the light that says this as well).

    That was a feature that was supposedly coming a long time ago, but with the whole "enlighten is dropped but-not-really and is now supported but-not-really" there is 0% chance of seeing this feature with Enlighten in Unity now.

    Also, don't use Enlighten.

    If you absolutely need some sort of realtime reactive GI, look at another engine.
     
    AcidArrow, Sep 18, 2021
    #8