android的Opengl ES2.0的简单demo。 压缩包内内容分为三个部分，第一个是一个空的环境，第二个是一个三角形，第三个是一个带有触控的三角形。-Simple demo Android Opengl ES2.0. Compressed packet content is divided into three parts, the first is a space environment, the second is a triangle, the third is with