Metal error on 4.6.3 [Solved]

My game freeze on load then I build with Metal (Universal) on iPhone 6. I have this error in debug
MTLTexture.m failed assertion MTLTextureDescriptor has invalid pixelFormat

https://fogbugz.unity3d.com/default.asp?675119_6ic0c0varodgsqm5

 

Likewise.

 

What?

 

He's asking if you'd submit a bug report that includes a small project that will reproduce ('repro') the error.

 

I submited a bug (link in first post). But I cant include source code, sorry

 

I think you have about zero chance of them fixing your bug if you can not submit code that reproduces it.

They are not wanting your actual project, just a create new project with the bare minimum required to reproduce the bug.

 

Got the same issue - but only on 64 Bit Device (iPhone 5s)

 

I'm hitting this as well. only when i build with metal on iphone 6.

i am on unity 4.6.4 and xcode 6.2

 

I have the same problem too. I have XCode 6.3 and Unity 5.01.
It seems it comes from metal as I don't get the error when I change Graphics API from automatic to OpenGL ES 3.0.
On automatic my app crashes on iPhone6 with this error :
/SourceCache/AcceleratorKit/AcceleratorKit-17.7/Framework/MTLTexture.m:215: failed assertion `MTLTextureDescriptor has invalid pixelFormat (0).'

 

Changing my TIFF atlases to PNG and also changing an ASTC format to PVRTC fixed the problem.
Not sure the TIFF atlases caused a crash, but I know the ASTC format did.

 

I finally realized where the problem is. Error start up when I display avatars from Facebook. I do it like this

Code (CSharp):

1. WWW www = new WWW(url); // For example https://graph.facebook.com/10204916518582922/picture?type=square&height=100&width=100
2.  
3. Texture2D texture = new Texture2D(width, height, TextureFormat.DXT1, false);
4.  
5. yield return www;
6.  
7. image.sprite = Sprite.Create(texture, new Rect(0, 0, width, height), Vector2.zero);
8. www.LoadImageIntoTexture(texture);

@povilas @Alexey Could you please help me?

 

Hey Stream,

If you're just looking for a solution to load a WWW fetched image into a texture I use the following:

Code (csharp):

1. WWW request = new WWW(url);
2. retryCount = 3;
3. do{
4.   yield return request;
5.   --retryCount;
6. } while(request.error != null && retryCount > 0);
7.  
8. if (request.error == null) {
9.   Texture2D tex = request.texture;
10.   //
11.   // This will obviously need to be amended for your needs, you won't have the same
12.   // custom shader as I'm using.
13.   //
14.   Shader shader = Shader.Find ("Custom/CustomUnlitTextureOnly");
15.   Material material = new Material (shader);
16.   material.mainTexture = tex;
17.  
18.   //
19.   // Now use the material as you like.
20.   //
21. }

Note, as shown here http://docs.unity3d.com/Manual/iphone-unsupported.html DXT textures are not supported on iOS.

 

@larku, soo, it works on Metal?

 

I'm not sure about that, but DXT textures are not supported on iOS so I'd make the assumption that your issue is actually due to you trying to use a DXT texture - I use the above method and I've never had any issues, though I have not tested explicitly with metal (I don't have a metal compatible device).

I suggest trying and see if it works (you've got nothing to lose).

 

@larku, thank you very much! I have not used your code, but you are proposed the right idea. The problem was in TextureFormat.DXT1. I just changed it to RGB24 and everything worked!

 

Excellent!

 

this error is been thrown iphone 5s/6/6 plus on unity 5.2.1 without even any DXT compression in any script

 

Same here, on 5.2.1p4

It happened after I switched a lot of our sprites to using Crunched compression and/or an atlas. I'll see if I can get a small project up soon.

 

SOLUTION : Force OpenGles 2.0 because is supported by all Apple Hardware !

 

Thanks bilelmnasser its helpfull.