static void rendered(struct wlr_surface *surface, int sx, int sy, void *data);

rendered(struct wlr_surface *surface, int sx, int sy, void *data)
{
	struct timespec *now = data;
	wlr_surface_send_frame_done(surface, now);
}
void

		wlr_surface_send_frame_done(client_surface(c), &now);

		if (VISIBLEON(c, c->mon))
			client_for_each_surface(c, rendered, &now);