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Lightmap error at runtime.

Discussion in 'Global Illumination' started by Avol, Aug 10, 2020.

  1. Avol

    Avol

    Joined:
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    Code (CSharp):
    1. ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
    2. Parameter name: Red color (Infinity) must be in range [0;1].
    3. UnityEngine.Experimental.GlobalIllumination.LinearColor.set_red (System.Single value) (at <2e6610ed29844f85a37924f81509fe5d>:0)
    Any idea what causes this error? Happens after upgrading to 2020.1.
    Disabling deprecated light probes doesn't solve the issue. Why does it say experimental global illumination?
     
    Avol, Aug 10, 2020
    #1

  2. Pema-Malling

    Pema-Malling

    Unity Technologies

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    Hi,
    Does this happen only on a specific project, or on new, blank projects as well?
    Which OS are you on?
    If you could post a repro project, that would be very helpful, and the fastest way to find the root cause.
     
    Pema-Malling, Aug 17, 2020
    #2

  3. Avol

    Avol

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    It does only happen on a specific project. I'm on windows.
    Project is quite complex with many plugins and shaders, so finding a cause is a nightmare. Also the error doesn't repeat itself at all times, rather every few minutes for about 100~150 frames. It does not seem to be correlated to enabling / disabling ( I could be wrong, but couldn't find any pattern) some features at runtime.
    Could it be related to lux etc shaders, since I'm unsure of their linear / gamma conversion part. Project is using gamma color space. Anyhow, if it is unrelated to base unity, will have to go the hard way of finding the source :)
     
    Avol, Aug 18, 2020
    #3

  4. Pema-Malling

    Pema-Malling

    Unity Technologies

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    I suspect it might be related to color temperature calculations, maybe try messing around with the color temperature settings on your lights. Without more information though, it's hard to say.
     
    Pema-Malling, Aug 18, 2020
    #4

  5. Avol

    Avol

    Joined:
    May 27, 2016
    Posts:
    95
    Code (CSharp):
    1. ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
    2. Parameter name: Red color (Infinity) must be in range [0;1].
    3. UnityEngine.Experimental.GlobalIllumination.LinearColor.set_red (System.Single value) (at <49f4e7e791cc4fffacd88f729e2b1e4c>:0)
    4. UnityEngine.Experimental.GlobalIllumination.LightmapperUtils.ApplyColorTemperature (UnityEngine.Color cct, UnityEngine.Experimental.GlobalIllumination.LinearColor& lightColor) (at <49f4e7e791cc4fffacd88f729e2b1e4c>:0)
    5. UnityEngine.Experimental.GlobalIllumination.LightmapperUtils.Extract (UnityEngine.Light l, UnityEngine.Experimental.GlobalIllumination.SpotLight& spot) (at <49f4e7e791cc4fffacd88f729e2b1e4c>:0)
    Does indeed say it's trying to use spot light color temperature, but none of the spotlights in the project use color temperature nor any code sets it at runtime.

    both GraphicsSettings.lightsUseLinearIntensity and GraphicsSettings.lightsUseColorTemperature are set to false
    upload_2020-8-19_12-15-37.png
     
    Avol, Aug 19, 2020
    #5

  6. Pema-Malling

    Pema-Malling

    Unity Technologies

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    Hmm, that is interesting, I'll try taking a look at that part of the code.
    Could you open the spotlight in the inspector and enabled debug mode (button next to the padlock icon, in the top right). That should reveal some new settings, including a "Use Color Temperature" toggle and a "Color Temperature" setting. I'm curious about what these are set to.
    I included some screenshots for clarification.
     

    Attached Files:

    Pema-Malling, Aug 19, 2020
    #6

  7. Avol

    Avol

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    Avol, Aug 19, 2020
    #7

  8. Pema-Malling

    Pema-Malling

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    Thanks for the information, this is helpful. I'll let you know if I figure anything more out.
     
    Pema-Malling, Aug 19, 2020
    #8

  9. Pema-Malling

    Pema-Malling

    Unity Technologies

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    Few more questions:
    • Which colors are your lights, is that pure white? (RGBA(1,1,1,1))
    • Does the error still occur if you change the color, for example to pure blue?
     
    Pema-Malling, Aug 19, 2020
    #9

  10. Avol

    Avol

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    They are of a few shades of red and blue. Will try pure white, will let you know if that changes anything :)
     
    Avol, Aug 19, 2020
    #10
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  11. Avol

    Avol

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    I think I solved the issue. Does not seem to throw the error during little testing that I did.
    It happens because I set light intensity to ridiculously low value such as: 7.320962E-39, while transtioning intensity from 8 to 0 exponentially. Rounding that value up to something more reasonable fixed it. Could it be the case? Something with floating point precision? Though strangely it didn't always throw the error on those values.
     
    Avol, Aug 20, 2020
    #11
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  12. Pema-Malling

    Pema-Malling

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    That's a good clue, thanks. I'll have to do some more digging into that code. I'm glad you solved your issue.
     
    Pema-Malling, Aug 20, 2020
    #12

  13. momoguru

    momoguru

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    i am having the same issue, and cannot pinpoint what object might be causing it.
     
    momoguru, Sep 3, 2020
    #13

  14. Jakub_Machowski

    Jakub_Machowski

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    The same problem after upgrading to 2020.3.45
     
    Jakub_Machowski, Mar 5, 2023
    #14