free opengl resources

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

@@ -1,10 +1,12 @@
 package chess.view.DDDrender;
 
+import java.io.Closeable;
+import java.io.IOException;
 import java.util.List;
 
 import chess.view.DDDrender.opengl.VertexArray;
 
-public class DDDModel {
+public class DDDModel implements Closeable {
 	private final List<VertexArray> vaos;
 
 	public DDDModel(List<VertexArray> vaos) {
@@ -15,4 +17,11 @@ public class DDDModel {
 		return vaos;
 	}
 
+	@Override
+	public void close() throws IOException {
+		for (VertexArray vertexArray : vaos) {
+			vertexArray.close();
+		}
+	}
+
 }