Handling individual rects

[elijahr2411]

I'm working on an application that involves sending screen data from a VNC connection over the network. As such, I'm looking for a way to handle individual screen rects sent from the VNC server. If I implement a FramebufferReference, I'm unable to see which parts of the screen were actually updated and so am forced to send the entire framebuffer for each update, or use some sort of diff algorithm against the old framebuffer, both of which are very inefficient.