Sorry, how was your comment "Wayland is an evolution of the previous design. X11's architecture had clients sending drawing commands to the X server, a method that became limited and required extensions over time. Wayland's approach is: applications perform their own rendering into their own separate buffers, then tell the compositor when they are ready. The compositor takes those buffers to produce the final image." not highly misleading, if X had the composite extension in 2004 and Wayland project was started in 2008? Last time I tried waypipe it did not work and its design seems flawed as it has to have hard-coded knowledge about each protocol used on the wire.