Android平台下OpenGL ES 2.0教程代码。 原文Android OpenGL ES 2.0 Tutorials
author：陈占洋
email：zhanyang.chen@gmail.com
内容禁止用于商业用途，侵权必究。
案列效果：
- 三角形绘制
- 立方体绘制效果
- 地球绘制效果
- 摄像头预览效果
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.