framebuffer文件实例



framebuffer是出现在内核中的驱动程序的接口。

他把显示设备抽象的映射到帧缓冲区——可以认为是显存！



可以把它看成是显示内存的一个映像，将其映射到进程地址空间以后，就可以直接进行读写操作，并且写操作可以直接反应在屏幕上。

-framebuffer file instance framebuffer kernel driver interface. His abstract display device mapped to the frame buffer- that is a memory! Think of it as an image of the display memory to be mapped into the process address space, it can directly read and write, and write operation can be directly reflected in the screen.