记录一下要看的

https://github.com/iTyran/TairanTrans/blob/master/ios8-metal-tutorial-with-swift.md

http://metalbyexample.com/

http://www.cocoachina.com/special/ios8/

http://www.raywenderlich.com/77488/ios-8-metal-tutorial-swift-getting-started

http://www.tuicool.com/articles/6NVBv2

http://www.raywenderlich.com/tutorials

http://metalbyexample.com/fundamentals-of-image-processing/

http://code.tutsplus.com/tutorials/ios-8-getting-started-with-metal--cms-21987

http://www.cocoachina.com/swift/20140902/9506.html

http://mobile.51cto.com/iphone-456221.htm

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

http://www.raywenderlich.com/tutorials#swift

http://www.opengpu.org/forum.php?mod=viewthread&tid=16858