在OPENGL程序中实现天空盒，可根据鼠标的移动位置自动追踪视角，效果很好，缝隙较少。程序中可以除了可使用BMP贴图外，还可以使用jpg格式的贴图。-The sky box in the OPENGL program, can automatically track angle according to the location of the mouse, the effect is very good, the gap is less. The program can be used in B