public static Clutter.Timeline? timeline = null;
public static TestActor[] actors;

public static void main(string[] args) {
	Clutter.init(ref args);
	Clutter.Stage stage = Clutter.Stage.get_default();
	stage.set_size(512,512);
	actors = new TestActor[26];
	for(int i = 0 ; i < actors.length ; i++) {
		TestActor actor = new TestActor();
		actor.set_size(32,32);
		actor.x = i * 10;
		actor.y = i * 10;
		actor.visible = true;
		stage.add_actor(actor);
		actors[i] = actor;
	}

	timeline = new Clutter.Timeline(1000);
	timeline.loop = true;
	timeline.new_frame.connect( new_frame);
	timeline.start();
	stage.color = {0,0,0,0xff};
	stage.show();
	Clutter.main();
}

public static void new_frame() {
	double progress = timeline.get_progress();
	for(int i = 0 ; i < actors.length ; i++) {
		uint opacity = (uint) (255 * progress);
		actors[i].opacity = opacity;
	}
}

public class TestActor : Clutter.Actor {

	Cogl.Texture? texture = null;
	Cogl.Offscreen? offscreen = null;
	Cogl.Material? material = null;

	public override void paint() {
		texture = new Cogl.Texture.with_size(32,32,Cogl.TextureFlags.NO_SLICING,Cogl.PixelFormat.RGBA_8888);
		offscreen = new Cogl.Offscreen.to_texture(texture);
		material = new Cogl.Material();
		material.set_layer(0,texture);

		//Without this call we don't leak
		Cogl.set_source(material);

		Cogl.rectangle(0,0,32,32);

	}
}