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Bug FBX Model - Generate Lightmap UVs hangs Unity

Discussion in '2020.2 Beta' started by newguy123, Jul 7, 2020.

  1. newguy123

    newguy123

    Joined:
    Aug 22, 2018
    Posts:
    1,248
    Hi Guys

    I have an FBX file that imports fine into Unity, extract materials and textures just fine.

    However as soon as I tick Generate Lightmap UVs and click Apply, UNity just hangs
    upload_2020-7-7_15-15-1.png

    It just sits there not doing anything, no change in RAM usage:
    upload_2020-7-7_15-15-43.png

    In the UI, the progress bar does not progress, but the time counter keeps running.
    upload_2020-7-7_15-16-23.png


    In this session it's only been 20 minutes, but I also left it for almost 40 minutes, without it doing anything.

    I have an i7 3930K, 64GB Ram, GTX 1080 Ti, Windows 10 (build 2004), GPU Driver 446.14
     
  2. newguy123

    newguy123

    Joined:
    Aug 22, 2018
    Posts:
    1,248
    Oh well. This just doesnt work

    upload_2020-7-7_16-0-13.png
     
  3. newguy123

    newguy123

    Joined:
    Aug 22, 2018
    Posts:
    1,248
    Would be good to add a big CANCEL button somewhere!
     
  4. LeonhardP

    LeonhardP

    Unity Technologies

    Joined:
    Jul 4, 2016
    Posts:
    3,132
    Hi @newguy123,

    Could you please submit a bug report for this issue with a reproducible attached to it? I've reached out to the team regarding the cancel button.
     
  5. LeonhardP

    LeonhardP

    Unity Technologies

    Joined:
    Jul 4, 2016
    Posts:
    3,132
    There's a possibility that this could be due to interference with antivirus software. Could you please try it again with AV turned off? If that doesn't help, we'll need a reproduction project to investigate.
     
  6. newguy123

    newguy123

    Joined:
    Aug 22, 2018
    Posts:
    1,248
    Thats unlikely as its not on all models. Its only on ones with heavy geometry (ie 3ds max models that specifically contain heavy RailClone objects - although that is what I suspect)

    We really need a more robust way of getting things into Unity. That "other" engine has very good FREE builtin tools in this regard, and Unity has FBX or the PAID Pixyz, which is only for CAD, not other DCC apps like 3ds Max
     
  7. LeonhardP

    LeonhardP

    Unity Technologies

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    Jul 4, 2016
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    3,132
    We'll need to have a look at the FBX file in that case.
     
  8. newguy123

    newguy123

    Joined:
    Aug 22, 2018
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    1,248
    How do I get it to you? I can't send the model via public forum.....
     
  9. LeonhardP

    LeonhardP

    Unity Technologies

    Joined:
    Jul 4, 2016
    Posts:
    3,132
    Please submit a bug report with the file attached. Instructions can be found in my signature.
     
    newguy123 likes this.