aef0254dd5
Increase the maximum number of shm "leaves" to three, and rewrite the leaf release and pick algorithms. The new algorithms hopefully improve on buffer re-use while freeing unused buffers. The goal of the new release algorithm is to always leave one free leaf with storage allocated, so that the next redraw could start straight on it. The new leaf picking algorithm will prefer a free leaf that already has some storage allocated, instead of just picking the first free leaf that may need to allocate a new buffer. Triple-buffering is especially for sub-surfaces, where the compositor may have one wl_buffer busy on screen, and another wl_buffer busy in the sub-surface cached state due to the synchronized commit mode. To be able to forcibly repaint at that situation for e.g. resize, we need a third buffer. Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Weston Weston is the reference implementation of a Wayland compositor, and a useful compositor in its own right. Weston has various backends that lets it run on Linux kernel modesetting and evdev input as well as under X11. Weston ships with a few example clients, from simple clients that demonstrate certain aspects of the protocol to more complete clients and a simplistic toolkit. There is also a quite capable terminal emulator (weston-terminal) and an toy/example desktop shell. Finally, weston also provides integration with the Xorg server and can pull X clients into the Wayland desktop and act as a X window manager. Refer to http://wayland.freedesktop.org/building.html for buiding weston and its dependencies.