This is for DECstation, RISC6000, Tektronix and many others. In fact, the real way could use very complex and tortuous indirect path. The fastest buffer mode is not the same on every display. The buffer modes 1 and 2 are perfect on any screen. The buffer mode 3 is display dependent.
Speeds are in frames by second.
100 are very approximate . Find how to receive the destroy window event. A best real time. A little bit of sound. Displays next piece.