Nice work there, mobilus. But if I can toss my ten cents here - GLScene's really nice for starters, but it still uses OpenGL 2.x which is obsolete these days. AFAIK they're doing ports for OGL 3.x, but I'm not sure at what stage it is right now. It's not that I'm trying to discourage you, though. Don't get me wrong - I like GLScene, but if you ask me, unless it fully supports the latest OpenGL version, it's not worth a try (or a "come-back" in my case).