Merge branch 'master' of https://github.com/zhangfangtaozft/Metal--

Author: Frank.Zhang

README.md

@@ -12,4 +12,5 @@ Metal入门资料
 * [Metal入门资料008-临时对象处理](https://www.jianshu.com/p/8aef4af237bf)<br>
 * [Metal入门资料009-使用playground开发](https://www.jianshu.com/p/3476e3560a31)<br>
 * [Metal入门资料010-渲染3D物体](https://www.jianshu.com/p/390e2f1ec2c3)<br>
-* [Metal入门资料011-着色技术入门](https://www.jianshu.com/p/a857c71b47ab)<br>
+* [Metal入门资料011-渲染技术(一)](https://www.jianshu.com/p/a857c71b47ab)<br>
+* [Metal入门资料012-渲染技术(二)](https://www.jianshu.com/p/2477018445ad)<br>