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No alpha for .png textures after upgrade to 5.5.2p2

Discussion in 'General Graphics' started by liortal, Mar 20, 2017.

  1. liortal

    liortal

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    I am trying to upgrade our project to Unity 5.5.2p2 (was: 5.3.6p8)

    Many textures appear to be broken as their import settings are incorrect. these textures do not show with a transparent background for some reason (most probably because of the import settings).

    I am not sure if this is a known bug (i recall seeing something like that), and how to fix it.

    Note that this is not just a single texture or a couple of them - we are talking about many textures that i have to pinpoint and fix right now.

    upload_2017-3-20_13-46-38.png
     
    liortal, Mar 20, 2017
    #1

  2. amjaliks

    amjaliks

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    amjaliks, Mar 20, 2017
    #2

  3. liortal

    liortal

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    Is there any fix for this ?
     
    liortal, Mar 20, 2017
    #3

  4. amjaliks

    amjaliks

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    Only solution I know to open in file in an image editor and re-save it as PNG. But I hope Unity fill fix this ASAP.
     
    amjaliks, Mar 20, 2017
    #4

  5. liortal

    liortal

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    @amjaliks did you report this as a bug by any chance ?
     
    liortal, Mar 20, 2017
    #5

  6. amjaliks

    amjaliks

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    @liortal, yes, I did. Case 892300.

    I got replay from QA recently:
     
    amjaliks, Mar 20, 2017
    #6

  7. karl_jones

    karl_jones

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    Hi. We are working on getting this fix into a patch for both 5.5 and 5.6.
     
    karl_jones, Mar 20, 2017
    #7
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  8. liortal

    liortal

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    do you know when this patch should land? also can you confirm that 5.5.1 does not suffer from this issue ?
     
    liortal, Mar 21, 2017
    #8

  9. karl_jones

    karl_jones

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    Ok looks like I spoke too soon. I was under the impression that it has been fixed but its still active. I have grabbed the bug so I'll take a look into it today and let you know when I have more information.
     
    karl_jones, Mar 22, 2017
    #9

  10. liortal

    liortal

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    Thanks. it would be great to know if we can apply any workaround instead of waiting for a patch.

    For example - can i create an editor script that will automatically patch texture importer settings somehow? i am not sure which textures i should select using this script?
     
    liortal, Mar 22, 2017
    #10

  11. liortal

    liortal

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    @karl_jones i used this code, do you see any modifications that should be done ?
    Code (CSharp):
    1. [MenuItem("Tools/Fix PNG Import Settings")]
    2. private static void FixUnityImportSettings()
    3. {
    4.     // get all paths of .png images in the project.
    5.     var pngImages = AssetDatabase.GetAllAssetPaths ().Where (path => path.EndsWith (".png"));
    6.  
    7.     foreach (var png in pngImages)
    8.     {
    9.         var importer = AssetImporter.GetAtPath (png) as TextureImporter;
    10.  
    11.         if (importer != null)
    12.         {
    13.             // Get texture settings (should be done per platform)
    14.             var settings = importer.GetPlatformTextureSettings("Android");
    15.  
    16.             var format = settings.format;
    17.             var autoFormat = importer.GetAutomaticFormat ("Android");
    18.  
    19.             // texture was automatically imported with wrong settings...
    20.             if (format == TextureImporterFormat.Automatic)
    21.             {
    22.                 // override settings per platform
    23.                 settings.overridden = true;
    24.  
    25.                 switch (autoFormat)
    26.                 {
    27.                     case TextureImporterFormat.RGB16:
    28.                     case TextureImporterFormat.RGB24:
    29.                     case TextureImporterFormat.PVRTC_RGB4:
    30.                     case TextureImporterFormat.PVRTC_RGB2:
    31.                        
    32.                     case TextureImporterFormat.ETC_RGB4:
    33.                     case TextureImporterFormat.ETC2_RGB4_PUNCHTHROUGH_ALPHA:
    34.                     case TextureImporterFormat.ETC2_RGB4:
    35.                        
    36.                     case TextureImporterFormat.ATC_RGB4:
    37.  
    38.                         // convert back to RGBA
    39.                         settings.format = TextureImporterFormat.ETC2_RGBA8;
    40.                         importer.SetPlatformTextureSettings (settings);
    41.                         importer.SaveAndReimport ();
    42.  
    43.                         break;
    44.                 }
    45.             }
    46.         }
    47.     }
    48. }
     
    liortal, Mar 22, 2017
    #11

  12. karl_jones

    karl_jones

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    Does it work?

    The issue has already been fixed. I managed to track down the fix and have a backport to 5.5 and 5.6 on the way. The only workaround at the moment is to force the format either via script(like above) or in the inspector.
     
    karl_jones, Mar 22, 2017
    #12

  13. liortal

    liortal

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    Great. Do you know if this will land into 5.5.2p4 ?
     
    liortal, Mar 22, 2017
    #13

  14. karl_jones

    karl_jones

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    No the cutoff for 5.5.2p4 was last week. It should make it into 5.5.3p1 which is due April 5th I believe.
     
    karl_jones, Mar 22, 2017
    #14

  15. liortal

    liortal

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    great. thank you
     
    liortal, Mar 22, 2017
    #15

  16. karl_jones

    karl_jones

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    Hey the fix is now in 5.5.3p1. You will need to re-import the affected assets when you open this version. We have not forced a re-import as this would force all users to re-import all textures which would be quite extreme :eek:
    So just right click the problem assets and pick re-import or re-import all if you have a lot.
     
    karl_jones, Mar 30, 2017
    #16
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  17. liortal

    liortal

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    Thanks @karl_jones I have actually ran my "fix" script on these assets to manually set their import format to whatever i want (RGBA ETC2 8 bit). Is there any simple way to roll that back? i believe i can do that via Git, but just checking with you if you know of anything else?

    Also, do you have a rough estimation on when this patch version should be available for download ?
     
    liortal, Mar 30, 2017
    #17

  18. karl_jones

    karl_jones

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    Scheduled for the 5th of April.
    If you have manually set the import format then that will be stored in the meta files. You could roll back this info in git like you say or change your import script so it sets them back to automatic format perhaps?
     
    karl_jones, Mar 30, 2017
    #18

  19. liortal

    liortal

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    Hi, do you know if the patch should be released today ?
     
    liortal, Apr 5, 2017
    #19
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  20. karl_jones

    karl_jones

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    5th April is the scheduled date. Its not unusual for it to slip a day. Sometimes if QA find an issue it can take longer.
    I'll ask the release manager tomorrow, if it's not out by then.
     
    karl_jones, Apr 5, 2017
    #20

  21. rankornfeld

    rankornfeld

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    I have 5.5.3f1 and it is still happening.
    Re import does not help either.
     
    rankornfeld, Apr 6, 2017
    #21

  22. amjaliks

    amjaliks

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    We need to wait for 5.5.3p1. It was scheduled for yesterday, but it seems there is some delay. @karl_jones, any updates on this?
     
    amjaliks, Apr 6, 2017
    #22

  23. karl_jones

    karl_jones

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    Hi.
    It has been delayed a little. Should be out today or before the end of tomorrow at the latest.
    Internally we went through a large reformat of our codebase(whitespace, tabs and spaces etc) and this week we did the same to 5.5 which delayed things a little. So it's now with QA to finalise.
     
    karl_jones, Apr 6, 2017
    #23
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  24. liortal

    liortal

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    oh, seems harmless ... :) hahaha
     
    liortal, Apr 6, 2017
    #24
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  25. amjaliks

    amjaliks

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    The issue is fixed in 5.5.3p1. Thanks!
     
    amjaliks, Apr 10, 2017
    #25
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