Oh, that Oxyron demo was a masterpiece I was dreaming in my sleep.
Sometimes I sleep and watch in my dream some demos with such high res and big screen and smooth, true 3d stuff, that when I wake up and the dreamy atmosphere fades away and I come back to reality, I say to myself "Nah! That's not possible on this computer". Well, besides the rest amazing stuff, that floor mapping sequence was like I have seen it in my dreams!
We are lucky that the retro communities and the classic demoscene at some machines is alive.