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

	wl_list_for_each(c, &clients, link)
		if (VISIBLEON(c, c->mon))
			client_for_each_surface(c, rendered, &now);
	for (i = 0; i < LENGTH(m->layers); i++)
		wl_list_for_each(layer, &m->layers[i], link)
			wlr_layer_surface_v1_for_each_surface(layer->layer_surface, rendered, &now);

	wlr_scene_output_send_frame_done(m->scene_output, &now);