Unexpected behavior while using Sprite Atlas' with Asset Bundles

Unity Engine
1

Hi Guys,

Im trying to use Sprite Atlas’ and asset bundles and getting some unexpected behavior. Checkout the video below:

The steps to recreate

  1. Create new project (projectA)
  2. Add a Cat Sprite to the project.
  3. Create a SpriteAtlas and add the Cat Sprite.
  4. Create a scene that contains a GameObject with a SpriteRenderer.
  5. Create a script that given a SpriteAtlas and sprite name it pulls the sprite out of the Atlas and sets it on the SpriteRenderer.
  6. Press play, note the cat shows on the screen.
  7. Build the bundles.
  8. Create another project (projectB)
  9. Copy over the bundles from projectA.
  10. Create a script in projectB that loads the scene bundle.
  11. Press play, note the scene loads but the cat doesnt show.

What I expect to happen is that in step 11. the cat sprite should show.

I tried unpacking the generated bundle from projectA using this tool: GitHub - SeriousCache/UABE: Asset Bundle Extractor and the texture is indeed within the bundle:

1485×817 264 KB

A related post to this one is: SpriteAtlas + AssetBundle unable to use sprites

That one however is dealing with the situation where the atlas is contained in a different bundle to a prefab that depends on it. In my case, the atlas is contained within the same bundle as the scene so it should just work.

It looks like @Kuan from Unity was very helpful with that post so hopefully he can he assist with this one too.

I have uploaded the two projects here:
https://www.dropbox.com/s/9zihri4293r2jd3/AtlasBundlesTestProjectA.zip?dl=0
https://www.dropbox.com/s/w72d7tnmazrijgp/AtlasBundlesTestProjectB.zip?dl=0

Cheers.

2 Likes
2

Hey @Mikeysee

Looks like this is a bug. I built a player from ProjectB and it works fine with the player. Just in editor we are seeing this missing texture reference. We will convert this into a bug and hopefully find a resolution for this quickly.

I will post here when we have more update.

Thank you for reporting this!

3

Hi @Kuan thanks for confirming that for me.

Is there any work around that I can use for now that you can think of?

4

I think you will have to work on both scene in the same project for now.