這邊附上跟EGL相關的網站，
https://www.khronos.org/registry/egl/sdk/docs/man/ 官網 http://www.cnblogs.com/kiffa/archive/2013/02/21/2921123.html
code: https://github.com/JimSeker/opengl/blob/master/eclipse/OpenGL/src/com/androidbook/opengl/BasicGL.java https://github.com/tsaarni/android-native-egl-example/blob/master/src/main/jni/renderer.cpp