Closeley related to: http://forum.openframeworks.cc/t/multidisplayfullscreen-on-linux/21078
Though I thought I ask the question more general. Is there a way to show a single OF renderer (extended) on multiple monitors under Linux? Doesn't have to be "true" fullscreen, the window should just cover all of the monitors without any system UI showing.
I tried using ofGLFWWindowSettings with multiMonitorFullScreen set to true without any effect as described in the thread above. Though maybe I misunderstood the meaning of that variable?
I also tried setting the window resolution to the combined resolution of the monitors but that doesn not work either. The window simply extends to the max size of the monitor where it started or moved to.
Really just any crude way would do it for me as long as I don't suffer a big performance hit.