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Bug Imported FBX with blendshapes have more vertices after upgrade 2023.1.9

Discussion in 'Asset Importing & Exporting' started by Qleenie, Aug 17, 2023.

  1. Qleenie

    Qleenie

    Joined:
    Jan 27, 2019
    Posts:
    736
    Hi,
    just updated from 2023.1.8 to 2023.1.9.
    After update, some of our imported FBX models have more vertices in their meshes than before. It's just a few, but it breaks our pipeline, as we store meta information about vertices, which don't match anymore. Have not checked if the order also changed.
    Never had such an issue, project was successfully migrated from 2019 -> 2020 -> 2023.1 without issues before.
     
    Last edited: Aug 17, 2023
    Qleenie, Aug 17, 2023
    #1

  2. clara_kang

    clara_kang

    Unity Technologies

    Joined:
    Jan 25, 2023
    Posts:
    7
    clara_kang, Aug 22, 2023
    #2

  3. Qleenie

    Qleenie

    Joined:
    Jan 27, 2019
    Posts:
    736
    project is 300GB ;) I can send you a fbx to test / compare, if you tell me where to send it to.
     
    Qleenie, Aug 22, 2023
    #3

  4. clara_kang

    clara_kang

    Unity Technologies

    Joined:
    Jan 25, 2023
    Posts:
    7
    clara_kang, Aug 22, 2023
    #4

  5. Qleenie

    Qleenie

    Joined:
    Jan 27, 2019
    Posts:
    736
    i can do that if I find time. Getting a bit tired of reporting bugs, as I have now 7 accepted bug reports on my list, where as none got fixed so far (some are 6 month old already)
     
    Qleenie, Aug 22, 2023
    #5

  6. George-Ing

    George-Ing

    Unity Technologies

    Joined:
    Jan 14, 2020
    Posts:
    68
    Apologies for that (sincerely).

    The FBX SDK is a super complex beast with tons of different versions, with every DCC version exporting its data in a different way. Unity itself is then moving along - adding features - in tandem.

    It's a surprisingly complex area of code under the hood.

    Bugs allow us to triage/prioritize issues in a central location, including the source assets. I completely appreciate we're not always fixing them at a fast-enough rate. We're all devs too, and honestly - we hear you.
     
    George-Ing, Aug 23, 2023
    #6