Copies a region of the screen (or the whole screen) to a buffer so it can be accessed with [code]SCREEN_TEXTURE[/code] in the [code]texture()[/code] function. Node for back-buffering the currently-displayed screen. The region defined in the BackBufferCopy node is bufferized with the content of the screen it covers, or the entire screen according to the copy mode set. Use [code]SCREEN_TEXTURE[/code] in the [code]texture()[/code] function to access the buffer. Buffer mode. See [enum CopyMode] constants. The area covered by the BackBufferCopy. Only used if [member copy_mode] is [constant COPY_MODE_RECT]. Disables the buffering mode. This means the BackBufferCopy node will directly use the portion of screen it covers. BackBufferCopy buffers a rectangular region. BackBufferCopy buffers the entire screen.