free opengl resources

app/src/main/java/chess/view/DDDrender/Window.java

@@ -11,6 +11,8 @@ import chess.view.DDDrender.world.Entity;
 import chess.view.DDDrender.world.World;
 import common.Signal1;
 
+import java.io.Closeable;
+import java.io.IOException;
 import java.nio.*;
 import java.util.ArrayList;
 import java.util.List;
@@ -24,7 +26,7 @@ import static org.lwjgl.opengl.GL11.*;
 import static org.lwjgl.system.MemoryStack.*;
 import static org.lwjgl.system.MemoryUtil.*;
 
-public class Window {
+public class Window implements Closeable{
 
 	// The window handle
 	private long window;
@@ -225,4 +227,9 @@ public class Window {
 		}
 	}
 
+	@Override
+	public void close() throws IOException {
+		this.renderer.close();
+	}
+
 }