kmx git

src/render/metal/build-metal-shaders.sh

Author	Commit	Date	CI	Message
	b2859af6	2017-12-07T16:08:09		Enable building the Metal renderer by default, and weak link the Metal framework so the SDL library is safe to use on older Macs Also generate iOS versions of the Metal shaders
	2a2c8d42	2016-04-21T03:16:44		Initial shot at a renderer target for Apple's Metal API. This isn't complete, but is enough to run testsprite2. It's currently Mac-only; with a little work to figure out how to properly glue in a Metal layer to a UIView, this will likely work on iOS, too. This is only wired up to the configure script right now, and disabled by default. CMake and Xcode still need their bits filled in as appropriate.