swift - SKTextureAtlas no longer sharing textures in iOS 10

Question

It seems that when pulling textures from a texture atlas, I am now generating new textures instead of using the same texture across different sprites with iOS 10. On iOS 9, this works as expected. Is anyone else experiencing this issue? Perhaps there is a step I missed that is now a part of iOS 10.

Notes: I created a sample project and created a new atlas, then just dragged spaceship in @1x, I have also tried preloading, and that did nothing as well.

Code:

  let atlas = SKTexturAtlas(named:"Sprites")
  var texture = atlas.textureNamed("Spaceship")
  print("(Unmanaged.passUnretained(texture)),(Unmanaged.passUnretained(texture).toOpaque())")

  texture = atlas.textureNamed("Spaceship")
  print("(Unmanaged.passUnretained(texture)),(Unmanaged.passUnretained(texture).toOpaque())")

Edit: To get around issues of comparison, I use the description property to compare if 2 textures are equal. For this to work though, you can't be using 2 atlases that each contain a texture with an exact name and size. I will never hit this situation, but for anybody out there looking for help, keep this in mind.

Answer 1

I've make the same test and get your same results.

I'm not sure 100% but seems that during the development of Swift 3 there was a proposal here to change Unmanaged to use UnsafePointer.

But if you try to make:

func address<T: AnyObject>(o: T) -> String{
     let addr = unsafeBitCast(o, to: Int.self)
     return NSString(format: "%p", addr) as String
}

Usage:

print(address(o: texture))

in iOS9 you have correct values, in iOS10 wrong results.

I think you're right, we are facing a bug (another..)