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Question How to reliably select Progressive GPU light mapper

Discussion in 'Global Illumination' started by AurraSing, May 3, 2021.

  1. AurraSing

    AurraSing

    Joined:
    Sep 11, 2018
    Posts:
    12
    I choose Progressive GPU light mapper to bake light. However, without me touching the keyboard or mouse, the light mapper option is always automatically selected back to Progressive CPU when baking. I am not sure what's going on. So, is there a way to select Progressive GPU light mapper? thx
     
    AurraSing, May 3, 2021
    #1

  2. Zylex

    Zylex

    Joined:
    Nov 25, 2008
    Posts:
    238
    You are probably running out of GPU memory. You need a decent amount of memory in order to bake with GPU. What is the GPU you are using?
     
    Zylex, May 4, 2021
    #2

  3. Mumphy

    Mumphy

    Joined:
    Jun 23, 2020
    Posts:
    18
    This happens too me as well, but not every time. I'm on an RTX 3070.
     
    Mumphy, May 6, 2021
    #3

  4. UnityLighting

    UnityLighting

    Joined:
    Mar 31, 2015
    Posts:
    3,793
    There are two reasons
    1. Your resolution is too high and out of gpu memory
    2. Your graphics card memory is less than 4 GB. Because Unity 2020+ wants at least 4 GB of memory
     
    UnityLighting, May 7, 2021
    #4

  5. KEngelstoft

    KEngelstoft

    Unity Technologies

    Joined:
    Aug 13, 2013
    Posts:
    1,366
    The console or editor log can give more detailed error information on fall back to CPU lightmapper.
     
    KEngelstoft, May 7, 2021
    #5