Search Unity

  1. Welcome to the Unity Forums! Please take the time to read our Code of Conduct to familiarize yourself with the forum rules and how to post constructively.
  2. We have updated the language to the Editor Terms based on feedback from our employees and community. Learn more.
    Dismiss Notice
  3. Join us on November 16th, 2023, between 1 pm and 9 pm CET for Ask the Experts Online on Discord and on Unity Discussions.
    Dismiss Notice
New Forum User Notice Update to the Unity Editor Software Terms Unite 2023 - Ask the Experts Online

Problem with lightmaps in Unity 5 (Artifacts and weird glitches)

Discussion in 'General Graphics' started by Dorf, Mar 6, 2015.

  1. Dorf

    Dorf

    Joined:
    Aug 13, 2013
    Posts:
    10
    I'm going through the learning projects from Unity's own site. Currently working on the survival shooter and this happened


    I've tried to clear and rebake the lightmaps with different settings but all of them end up being a variation of this. Smaller Atlas Size for example reduces the size of the dark spots. If I use the LightmapSnapshot asset that is in the project files everything works fine. But the moment I try to bake the lightmap everything goes wrong.
     
    Dorf, Mar 6, 2015
    #1

  2. KEngelstoft

    KEngelstoft

    Unity Technologies

    Joined:
    Aug 13, 2013
    Posts:
    1,366
    Could you please try clearing the GI Cache in the Preferences window and let me know if the problem persists?
     
    KEngelstoft, Mar 11, 2015
    #2

  3. Dorf

    Dorf

    Joined:
    Aug 13, 2013
    Posts:
    10
    Cleared the GI Cache and built the lightmaps again. Didn't fix the problem.
     
    Dorf, Mar 11, 2015
    #3

  4. Stardog

    Stardog

    Joined:
    Jun 28, 2010
    Posts:
    1,887
    Same thing here:
     
    Stardog, Mar 11, 2015
    #4

  5. KEngelstoft

    KEngelstoft

    Unity Technologies

    Joined:
    Aug 13, 2013
    Posts:
    1,366
    Hmm, not cool. Looks like you have the same issue. Can you please file a bug report?
     
    KEngelstoft, Mar 12, 2015
    #5

  6. EBR

    EBR

    Joined:
    Jan 27, 2013
    Posts:
    117
    I have this as well. I got it from randomly changing some lighting settings to see what happened. When I reverted the changes the artifacts remained. Although I did bake the scene once, I cleared the cache and deleted the lightmaps but it doesn't do anything.
    Screen Shot 2015-03-12 at 1.26.53 pm.png
    Screen Shot 2015-03-12 at 2.06.05 pm.png
    Screen Shot 2015-03-12 at 1.30.43 pm.png

    EDIT: I comes from the soft shadows. If you increase the quality or change it to hard shadows then it works fine :)
     
    Last edited: Mar 12, 2015
    EBR, Mar 12, 2015
    #6
    theANMATOR2b likes this.

  7. Murklan74

    Murklan74

    Joined:
    Mar 7, 2015
    Posts:
    1
    Hi,
    I am new to Unity, I got the same issue when doing that Survival Shooter tutorial. The very second the cache and lightmaps were rebuilt the artifacts were back. Sometimes its even completely black, like no light is computed at all. Tried all kinds of shadow settings without any result.
    I made a new project with the same imported assets but used the "_CompletedAssets" instead of my own scene and scripts.
    This project does not automatically start building cache and lightmaps when I clear the cache and the completed game is free of artifacts.
    Does this mean I'm using lightmaps created in 4.6 or whatever the tutorial was created in?
     
    Murklan74, Mar 17, 2015
    #7

  8. AMedviediev

    AMedviediev

    Joined:
    Mar 18, 2015
    Posts:
    2
    Same problem here, during the survival shooter tutorial. Funny thing is, if I build the game, it runs fine without any artifacts
     
    AMedviediev, Mar 19, 2015
    #8

  9. AMedviediev

    AMedviediev

    Joined:
    Mar 18, 2015
    Posts:
    2
    No, I was wrong, moved on with the tutorial and the issue re-appeared
     
    AMedviediev, Mar 19, 2015
    #9

  10. vrt

    vrt

    Joined:
    Oct 2, 2014
    Posts:
    1
    I had an problem that looked just like this, and the Solution was to turn on "Generate Lightmap UV" on the imported models. Maybe you wanna check if that is the problem.
     
    vrt, Sep 28, 2015
    #10

  11. careuno1

    careuno1

    Joined:
    Jun 10, 2015
    Posts:
    8
    I have the same problem with all my scenes and "Generate Lightmap UV" doesn't fix the issue. I'm using 5.2.2 version.
     
    careuno1, Nov 6, 2015
    #11