private static void Main()
{
using (var r = new Root())
{
r.RenderSystem = r.RenderSystems[0];
using (r.Initialize(true))
{
var win = new DemoWindow(r);
win.OnLoad();
r.FrameRenderingQueued += win.OnRenderFrame;
r.StartRendering();
win.OnUnload();
}
}
}