类似于DirectDraw的blit函数，过时的技术，我们有实现了它。它非常的简单，就是把一块纹理贴到另一块纹理上。...

代码说明：

类似于DirectDraw的blit函数，过时的技术，我们有实现了它。它非常的简单，就是把一块纹理贴到另一块纹理上。-Similar to the DirectDraw Blit function, outdated technology, we have to achieve it. It is very simple, is to paste a texture to another texture on a.