public void OnClosed(EventArgs e) { entryPoint.OnClose(); RenderEngine.CleanUp(); GL.BindVertexArray(0); GL.BindTexture(TextureTarget.Texture2D, 0); GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0); GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, 0); RenderDataLoader.CleanUp(); }