public override void ApplicationDidFinishLaunching(CCApplication application, CCWindow mainWindow) { application.ContentRootDirectory = "Content"; var windowSize = mainWindow.WindowSizeInPixels; var desiredWidth = 1024.0f; var desiredHeight = 768.0f; // This will set the world bounds to be (0,0, w, h) // CCSceneResolutionPolicy.ShowAll will ensure that the aspect ratio is preserved mainWindow.SetDesignResolutionSize(desiredWidth, desiredHeight, CCSceneResolutionPolicy.ShowAll); // Determine whether to use the high or low def versions of our images // Make sure the default texel to content size ratio is set correctly // Of course you're free to have a finer set of image resolutions e.g (ld, hd, super-hd) if (desiredWidth < windowSize.Width) { application.ContentSearchPaths.Add("hd"); CCSprite.DefaultTexelToContentSizeRatio = 2.0f; } else { application.ContentSearchPaths.Add("ld"); CCSprite.DefaultTexelToContentSizeRatio = 1.0f; } var scene = new CCScene(mainWindow); var introLayer = new IntroLayer(); scene.AddChild(introLayer); mainWindow.RunWithScene(scene); }