Search Unity

Uneven Baked GI

Discussion in 'Global Illumination' started by Hormic, Jan 31, 2019.

  1. Hormic

    Hormic

    Joined:
    Aug 12, 2014
    Posts:
    251
    Hello,

    I have a problem with the lightbaking, it seems unpredictable for me in some cases.
    I use Real Time lightning and baked global illumination with one directional light (sun) for the scene with unity 2018.2.18f1

    Here i have a shelf in scene view:
    shelf_Scene.jpg
    and here the shelf in game:
    shelf_Game.jpg

    as you can see it has randomly lit probs on it and i don't know why and how i can solve that.
    They are all with the same settings, i have tried readjusting reflection probes and more light probes.
    Most things are looking good, and even the self looked better earlier, but now i have this issue and no idea what is the cause.
    Maybe the static batching?
    But i have turned it off and on also and no difference, lightbaking always takes at least 30 minutes so its also exhausting to test.
    Big Thanks for hints!
     
    Last edited: Jan 31, 2019
    Hormic, Jan 31, 2019
    #1

  2. JenniferNordwall

    JenniferNordwall

    Unity Technologies

    Joined:
    Sep 19, 2016
    Posts:
    160
    Hi

    I made a talk that might explain the basics for you. If you just have started, there is a lot of stuff you need to grasp (just the fact that you are using both realtime and bakad GI will cause some issues).



    Please have a look and see if it answers your questions. Also, this talk is about the details of the new lightmapper (Progressive). https://www.gdcvault.com/play/1024840/Make-It-Shiny-Unity-s (only the first 20 min).

    It's an hour of your time and hopefully it will solve it for you :) Cheers!
     
    JenniferNordwall, Jan 31, 2019
    #2
    Hormic likes this.

  3. Hormic

    Hormic

    Joined:
    Aug 12, 2014
    Posts:
    251
    Thank you Jennifer i will watch your talk, for sure there are some interesting points i'm not aware of right now.
    But the problem is frustrating, cause after testing for a complete day, i would say it is a bug in unity.
    It is very often the case that after new lightbaking some strange things have changed in the scene.
    I would prefer a more stable unityversion and not this upgrade madness where you can't rely on some behavior and have to deal with other issues every new version.
    Maybe it's not a bad idea to check out unreal, at least for lightning it seems the more coherent choice.
     
    Hormic, Feb 1, 2019
    #3

  4. JenniferNordwall

    JenniferNordwall

    Unity Technologies

    Joined:
    Sep 19, 2016
    Posts:
    160
    Please have a look at the basics first. Just that fact that you are both using probes, realtime and baked GI for that indoor scene makes little sense to me. If you have a clear repo, please file a bug.
    I can't force you to stick with us, but theres always pros and cons with all engines.
     
    JenniferNordwall, Feb 4, 2019
    #4
    Hormic likes this.

  5. Hormic

    Hormic

    Joined:
    Aug 12, 2014
    Posts:
    251
    Thanks for your answer, the main purpose for my indoor scene is visualising a 24 hours day - night cycle with the light exposure and transitions through windows and open doors from outside and of course a realistic ambient lightning through all this changes. What kind of light setting would you suggest in this situation?
     
    Hormic, Feb 4, 2019
    #5

  6. JenniferNordwall

    JenniferNordwall

    Unity Technologies

    Joined:
    Sep 19, 2016
    Posts:
    160
    Have a go at realtime GI only is what I would suggest. But I'm not a lighting artist, I just make the software :D
     
    JenniferNordwall, Feb 6, 2019
    #6
    Hormic likes this.

  7. Hormic

    Hormic

    Joined:
    Aug 12, 2014
    Posts:
    251
    ohh, hopefully this two professions are well united with you! thank you for that suggestion, i will try it. :)
    The scene looks actually very nice already, although it's very performance hungry! The problem i described above are not directly related to this settings, cause i changed everything and this problem persists. Only solution for me was to go back to an earlier save state.
     
    Hormic, Feb 6, 2019
    #7