Поддержка многопоточности

wayland/include/window.h

@@ -7,6 +7,7 @@
 struct wayland_window {
     struct wl_surface *wl_surface;
     struct wl_buffer *buffer;
+    struct wl_callback *frame_callback;
     struct xdg_surface *xdg_surface;
     struct xdg_toplevel *xdg_toplevel;
     uint8_t *data;