if (!wlr_gamma_control_v1_apply(event->control, &event->output->pending))

	Monitor *m = event->output->data;
	struct wlr_output_state pending = {0};
	if (!m)
		return;
	if (!wlr_scene_output_build_state(m->scene_output, &pending))

	if (!wlr_output_test(event->output)) {
		wlr_output_rollback(event->output);

	if (!wlr_gamma_control_v1_apply(event->control, &pending))
		goto out;
	if (!wlr_output_commit_state(m->wlr_output, &pending)) {

		goto out;

	wlr_output_schedule_frame(event->output);

	wlr_damage_ring_rotate(&m->scene_output->damage_ring);
out:
	wlr_output_state_finish(&pending);