Did GetNativeTextureID() change recently?

Questions & Answers
1

It seems that somewhere between Unity 4.6.2 and 4.6.5, GetNativeTextureID() changed behavior in iOS and Android. It used to return the texture “name”, which was often a two-digit ID, and was then usable with

glBindTexture(GL_TEXTURE_2D, textureId);

But now with 4.6.5, it returns a large number, and glBindTexture does not work.

I’ve run the below code in both versions:

    var textureId = (int) frame.renderer.material.mainTexture.GetNativeTexturePtr ();
    Debug.Log ("Texture ID: " + textureId + " " + frame.renderer.material.mainTexture.GetNativeTextureID());

the output of which is:

4.6.2:

Texture ID: 22 22
4.6.5:
Texture ID: 405458832 395710264

Notice that the pointer and ID are both large numbers, but not the same.

There’s nothing that I can see in the release notes of any mention of this behavior between 4.6.2 to 4.6.5. So… any ideas?

2

It’s because of the move to Metal on iOS in 4.6.3.

You can get the pointer to the Metal texture like this:

 id<MTLTexture> tex = (id<MTLTexture>) textureId;

Examples of how to do this are here:

https://bitbucket.org/Unity-Technologies/iosnativecodesamples