Metal C++ Backend/Examples

[timmg]

Feature request:

Develop backend/examples for Metal over C++.

https://developer.apple.com/metal/cpp/

[ocornut]

What would be the added value and why not using the existing backend that is already provided, since Apple toolchains supports both languages?

[thedmd]

@timmg
FYI: Wrapper is available here https://github.com/bkaradzic/metal-cpp.

[metarutaiga]

Metal use C++ is bad idea, it lost ARC feature and make codes dirty.
If you want write C++ files only (ex: cc or cpp), you can add compiler flag to enable Objective-C.

COMPILER_FLAGS = "-x objective-c++ -fobjc-arc -fobjc-weak -fmodules"

Unreal is using mtlpp, but it's difficult to add new features without Objective-C.
Finally, it can't pass Objective-C because Metal is Objective-C.

[ocornut]

I'm closing this until there's an argument for why we would need that additional back-end.
I understand it is good move for Apple to provide that as many apps/engines are purely C++ based and the interop can require extra work, but AFAIK once we do have an Objective-C version we don't need a second one.