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Older asset bundles and 5.4 - Failed to load GpuProgram from binary shader data in ''.

Discussion in 'Editor & General Support' started by andyz, Aug 18, 2016.

  1. andyz

    andyz

    Joined:
    Jan 5, 2010
    Posts:
    1,171
    We use a lot of asset bundles and some were built with older versions of Unity but worked fine in 5.3 with some material replacement applied - only warnings we would get is "GpuProgram creation error: shader program type is unrecognised. You might have a precompiled shader asset from an old Unity version." for some bundles.

    But now in 5.4 the console is full of hundreds of "Failed to load GpuProgram from binary shader data in ''. warning messages which slow the editor to a crawl which is unfortunate as we have a lot of asset bundles to update.

    Exactly what is this new warning caused by and does it need to throw it quite so many times in the editor?
     
    andyz, Aug 18, 2016
    #1

  2. mgear

    mgear

    Joined:
    Aug 3, 2010
    Posts:
    5,597
    Had the same problem also, reported as #823113,
    got confirmation that its a bug, but they said, not related to building bundles in older version,
    something to do with variants.. (although i didn't have any?)
     
    mgear, Aug 18, 2016
    #2

  3. andyz

    andyz

    Joined:
    Jan 5, 2010
    Posts:
    1,171
    ok thanks - will delay upgrading to 5.4 then
     
    andyz, Aug 19, 2016
    #3

  4. andyz

    andyz

    Joined:
    Jan 5, 2010
    Posts:
    1,171
    Is this due to be fixed Unity?
    stopping us from upgrading as 100s of warnings slow editor to a crawl
     
    andyz, Aug 31, 2016
    #4

  5. andyz

    andyz

    Joined:
    Jan 5, 2010
    Posts:
    1,171
    Please fix - bug Case #831118
     
    andyz, Sep 21, 2016
    #5

  6. Aras

    Aras

    Unity Technologies

    Joined:
    Nov 7, 2005
    Posts:
    4,539
    Shaders in asset bundles built with older versions than 5.4 are not compatible and will fail to load. In 5.4 we have changed how shader data is serialized so that it loads up much faster & uses less memory in the process. Compatibility with old asset bundles was lost there however.
     
    Aras, Oct 25, 2016
    #6
    zombiegorilla likes this.

  7. andyz

    andyz

    Joined:
    Jan 5, 2010
    Posts:
    1,171
    These warning messages were actually all fixed in 5.5.1 but now in 5.6 they are back again and also show errors in the editor with: D3D shader blob is empty! So would appear compatibility went forwards and now backwards again!
     
    andyz, Apr 19, 2017
    #7
    JYeah likes this.

  8. Wothanar

    Wothanar

    Joined:
    Sep 2, 2016
    Posts:
    97
    still happends on unity 2017.3.03f why?
    HELP!!!!!!!!!! this just come now when i updated to 2017.3.0f3 from 2017.2.0f3 then now i cant fix it , i re builded the assets bundles and re uploaded to the server and changed the num versions ... and now our assets bundles dosnt work and the console trown this errors:

    https://gyazo.com/6287d70a4e587e525207809651fcd19a

    HELP PLEASE!
     
    Wothanar, Mar 27, 2018
    #8