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

Errors in light transport baking process

Discussion in 'Global Illumination' started by tawdry, Dec 17, 2015.

  1. tawdry

    tawdry

    Joined:
    Sep 3, 2014
    Posts:
    1,356
    'Can't get any further with the gi autocompute keeps throwing the following 2 errors on a loop what do they mean?
    Failed executing external process for 'Light Transport' job.
    Light Transport' job failed with error code: 2 ('Failed to load input data (Precomp Packed Systems and Precomp System Clusterings).').
     
    tawdry, Dec 17, 2015
    #1

  2. KEngelstoft

    KEngelstoft

    Unity Technologies

    Joined:
    Aug 13, 2013
    Posts:
    1,366
    It sounds like some files that the clustering job is generating is getting deleted from the GI Cache so the Light Transport job can't find it. Or maybe we have a bug in the hashing code that causes the Light Transport job to look for the wrong file... Either way, this should of course not happen. Can you please file a bug report?
     
    KEngelstoft, Dec 21, 2015
    #2

  3. tawdry

    tawdry

    Joined:
    Sep 3, 2014
    Posts:
    1,356
    Sometimes clearing the gi cache and trying works sometimes not it is a bit random. What should i put in the bug report?
     
    tawdry, Dec 22, 2015
    #3

  4. kierand

    kierand

    Joined:
    Sep 22, 2014
    Posts:
    32
    We have also just got this out of the blue on 5.4b12. I'm going to see if it rectifies itself tonight. Otherwise it looks like I will need to nuke the GI cache which is a real pain as that will result in a 22 hour rebake for all our scenes :(
     
    kierand, Apr 15, 2016
    #4

  5. KEngelstoft

    KEngelstoft

    Unity Technologies

    Joined:
    Aug 13, 2013
    Posts:
    1,366
    The scene where you are experiencing the error please.
     
    KEngelstoft, Apr 18, 2016
    #5

  6. kierand

    kierand

    Joined:
    Sep 22, 2014
    Posts:
    32
    I should point out that our random instance of this did not happen again when our CI server came to light bake again. This was without clearing the GI cache. Also of note, we just so happen to have a second CI server shadowing our main one at the moment. That one never got the error with exactly the same scene and project setup. Therefore I think that this is not scene specific at all, instead a random error somewhere inside the light bake process.
     
    kierand, Apr 18, 2016
    #6