问题
It has been a while since I have used XCode, but since Apple revieled XCode 6 and the new Metal API I had to check it out.
They have released examples, e.g. a converted version of their Basic3D example. I am having problems making them compile and run, though. I had to add paths the Quatz and Metal frameworks for compilation and linking to work - thought that should have worked out of the box with build-in libraries?
Also the metal shader compilation step fails, it can not find the metal compiler. Where in XCode is that path setup?
If I ignore the shader compilation step I get an error that the application will not run on any of the simulators. Can metal based 3D applications only run on actual hardware and not in simulator mode?
回答1:
You can't run metal on simulator but you can use this workaround so that it will still compile as long as you have a fallback for the code.
http://medium.com/@jscampbell/bare-metal-working-with-metal-and-the-simulator-70e085e3a45
回答2:
According to a staff on Apple dev forums, Metal does not run in the simulator.
See: https://devforums.apple.com/message/971605#971605
If you look at other samples/app templates there is no need to explicitly link any framework, indeed everything runs out of the box.
回答3:
I started with the hello triangle example they give you to download. It contains all the platform #if's you need to know about. I recommend you get that project and take a look.
https://developer.apple.com/documentation/metal/hello_triangle
#if TARGET_OS_SIMULATOR
#error No simulator support for Metal API. Must build for a device
#endif
来源：https://stackoverflow.com/questions/24046125/compiling-and-running-the-metal-examples