Added Glitch Room Source code to Gitty

tests/space_invaders/benchmark.gd

@@ -0,0 +1,22 @@
+extends SceneTree
+func _initialize() -> void:
+	call_deferred("run")
+func run() -> void:
+	DisplayServer.window_set_vsync_mode(DisplayServer.VSYNC_DISABLED)
+	root.size=Vector2i(672,768)
+	root.content_scale_size=Vector2i(672,768)
+	var g = load("res://games/space_invaders/SpaceInvaders.tscn").instantiate()
+	root.add_child(g)
+	g.sound_enabled=false
+	g.set_physics_process(false)
+	g.begin_demo()
+	for i in range(30): await process_frame
+	var begin := Time.get_ticks_usec()
+	for i in range(240):
+		g._physics_process(1.0/60)
+		await process_frame
+		await RenderingServer.frame_post_draw
+	var seconds := (Time.get_ticks_usec()-begin)/1000000.0
+	print("240 rendered frames: ",snappedf(seconds,.001)," seconds; average ",snappedf(240/seconds,1)," FPS (desktop, uncapped)")
+	g.free()
+	quit()