AssetDatabase.ImportAsset with ImportAssetOptions.ForceSynchronousImport not synchronous?

Unity Engine
1

I have some code in a ScriptedImporter that is essentially a loop, where each iteration of the loop:

  1. Makes a JSON call to a database to get a resource filepath
  2. Copies the resource from that filepath to the Unity project
  3. Calls AssetDataabase.ImportAsset(resource, ImportAssetOptions.ForceSynchronousImport)

However it doesn’t appear to be running synchronously as I desire. I can tell because all of the individual database queries finish BEFORE Unity starts importing the assets. At least visually that is what I am seeing. I need to write up some debug code to be certain.

Anyone else seeing this? Unity 2017.2

2

I’m 90% certain this is the case now. On top of visually seeing all the DB requests finish long before the first Import Progress Bar from Unity shows up, I added a call to load the asset immediately after the import asset call, and that load asset call fails every time which tells me it hasn’t yet loaded.

3

It actually seems like the import doesn’t even start when I make the call, but rather starts when my OnImportAsset() method terminates, which is of course too late for me to use the data.

4

After some more testing it appears that this method and the Synchronous flag does work OUTSIDE of the ScriptedImporter, so this is a (bug?) issue with using it inside of a ScriptedImporter :frowning:

5

Seeing exactly the same issue post 4 years. Omg what the * is Unity doing all these years.

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