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Final gather broken?

Discussion in 'Global Illumination' started by DaddyMac, Jun 6, 2016.

  1. DaddyMac

    DaddyMac

    Joined:
    Sep 18, 2014
    Posts:
    13
    Even on a very low setting, final gather causes an out of memory error when baking lightmaps for a moderately complex/large scene (PC targetted). I have 32gb of ram. Without final gather the result is unusable. Is anyone else having this problem?
     
    DaddyMac, Jun 6, 2016
    #1

  2. KEngelstoft

    KEngelstoft

    Unity Technologies

    Joined:
    Aug 13, 2013
    Posts:
    1,366
    We haven't seen Final Gather cause out of memory situations. Is it possible for you to share the scene?
     
    KEngelstoft, Jun 6, 2016
    #2

  3. DaddyMac

    DaddyMac

    Joined:
    Sep 18, 2014
    Posts:
    13
    Unfortunately I'm not in a position to share the scene, but the fact that this is not a general bug is potentially good news. Do you have any ideas about the kinds of things I could look for that may result in a "application has run out of memory" error?

    I will create some test scenes and try to track down the cause.
     
    DaddyMac, Jun 8, 2016
    #3

  4. ev3d

    ev3d

    Joined:
    Apr 19, 2013
    Posts:
    327
    any more info?
     
    ev3d, Nov 1, 2016
    #4

  5. UnityLighting

    UnityLighting

    Joined:
    Mar 31, 2015
    Posts:
    3,793
    If you have "application has run out of memory" problem, You need to upgrade your system ram to 16gb or more. After i upgraded my system ram to 16gb, my problem was solved. You also need to use unity 5.4.1 +.
     
    UnityLighting, Nov 3, 2016
    #5

  6. ev3d

    ev3d

    Joined:
    Apr 19, 2013
    Posts:
    327
    i already have 48
     
    ev3d, Nov 6, 2016
    #6

  7. UnityLighting

    UnityLighting

    Joined:
    Mar 31, 2015
    Posts:
    3,793
    Maybe this solve your problem:

    Unity 5.4.2 release notes:
    • GI: Fix for out-of-memory failure in Visibility Upsampling when baking lightmaps for a large scene. (819841)
     
    UnityLighting, Nov 6, 2016
    #7

  8. HGD

    HGD

    Joined:
    Apr 4, 2015
    Posts:
    3
    5.5 was looking promising in this regard, but once I hit about 8 million triangles in the scene, the same out of memory error came back during the final gather phase. I have 32gb of ram, which you would think would be enough, and 400gb free on the hard drive for swapping. If Unity would allow you to bake a selection, rather than it always having to be the entire scene, it would make things a lot easier.
     
    HGD, Dec 26, 2016
    #8