tested multiple windows

Test.java

@@ -7,12 +7,14 @@ public class Test {
 	public static void main(String[] args) {
 		var engine = new Engine();
 		var window = engine.openWindow(1280, 720, "Skunkworks");
+		var window2 = engine.openWindow(1280, 720, "Skunkworks");
 		var img = engine.loadImage("C:\\Users\\dani\\Videos\\Screenshot 2022-06-25 17-00-59.png");
 		//var img = engine.loadImage("C:\\art\\kyoko.png");
 		System.out.println(img.getPixel(new Vec2i(60, 60)));
 
 		while(!window.shouldClose()) {
 			window.tick();
+			window2.tick();
 		}
 	}
 }

com/danitheskunk/skunkworks/Engine.java

@@ -10,6 +10,18 @@ import java.nio.ByteBuffer;
 import static com.danitheskunk.skunkworks.GraphicsBackend.*;
 
 public class Engine {
+	GraphicsBackend graphicsBackend;
+
+	//Constructors
+	public Engine() {
+		this(OPENGL);
+	}
+
+	public Engine(GraphicsBackend graphicsBackend) {
+		this.graphicsBackend = graphicsBackend;
+	}
+
+	//Methods
 	public Image loadImage(String path) {
 		ByteBuffer buf;
 		byte[] bytes;
@@ -27,10 +39,6 @@ public class Engine {
 	}
 
 	public IWindow openWindow(int width, int height, String title) {
-		return openWindow(width, height, title, OPENGL);
-	}
-
-	public IWindow openWindow(int width, int height, String title, GraphicsBackend graphicsBackend) {
 		return switch(graphicsBackend) {
 			case OPENGL -> new GLWindow(width, height, title);
 		};