OpenGL直线代码OpenGL(全写Open Graphics Library)是指定义了一个跨编程语言、跨平台的编程接口规格的专业的图形程序接口。它用于三维图像(二维的亦可)，是一个功能强大(The GL straight line code OpenGL(Full Open Graphics Library) refers to a professional graphical program interface that defines a cross-programming language and cross-platform programming interface specification. It is used in three-dimensional images(two-dimensional can also be) and is a powerful function.)