CODEWITHSUNDEEP
iosswiftmacosshadermetal
Paweł
Paweł

Reputation: 1271

Loading metal kernel shaders for testing

I'm trying to make a cocoa touch framework that will be performing some parallel computations on OSX/iOS and I'm having some issues with setting up the tests. Whenever I try to run :

library = device.newDefaultLibrary()!

I get hit by the error :

/Library/Caches/com.apple.xbs/Sources/Metal/Metal-55.2.8/Framework/MTLLibrary.mm:1016: failed assertion `filepath must not be nil.'

I was also trying to load shaders straight from the bundle without success.

How do I load up metal shaders properly so I can use them within a framework / tests?

Thanks!

Upvotes: 2

Views: 912

Answers (1)

Wil Shipley
Wil Shipley

Reputation: 9533

You can load a Metal library from your framework with this code:

let library = try! sceneKitView.device!.newLibraryWithFile(NSBundle(forClass: TheNameOfThisClass.self).URLForResource("default", withExtension: "metallib")!.path!)

BUT I filed rdar://22618641 in September 2015 with a sample project that demonstrates that you can’t load precompiled Metal libraries from frameworks — you get the same error you saw above when you try to use the library.

(Well, you CAN load the library, you just can’t actually use it.)

Upvotes: 1

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