一个教您给三角形和四边形添加2种不同类型的着色方法的opengl程序，使用Smooth coloring(平滑着色)将三角形的三个顶点的不同颜色混合在一起，创建漂亮的色彩混合。效果相当不错！-teaches you to a triangular and quadrilateral add two different types of coloring method opengl procedures, Use Smooth coloring (coloring smoothing) triangle vertices of the three different colors mixed in a , to create beautiful color mixing. The results are pretty good!