Using the ps3fb device, your application writes to a main-memory (offscreen) buffer.
使用ps 3 fb设备,您的应用程序会写入主存(offscreen)缓冲区。
2
For example, to get input, we may need to specify the file or device to use as the source, and the address and length of the memorybuffer into which the input should be read.
Then the driver commands the device to do its job (by manipulating its registers) and the device transfers output data directly to the allocated buffer in the memory.