Function rlBlitFramebuffer 

pub unsafe extern "C" fn rlBlitFramebuffer(
    srcX: i32,
    srcY: i32,
    srcWidth: i32,
    srcHeight: i32,
    dstX: i32,
    dstY: i32,
    dstWidth: i32,
    dstHeight: i32,
    bufferMask: i32,
)