I tried the version poc-01. Very nice to play with the different values. The only complaint is, I get only 35-40 fps.
What? That is very suprising. The lighting term I use is a reduced version of the lighting of the Sponza demo. The rest is just pixel clipping for the quad (top surface of the torus) and some matrix calculations per vertex. What specs do you have?
A better approach for rendering might be a depth field with ray marching? Should be quite simple, produce better results and may even be faster
I doubt that. In the demo I just use a model with 274 faces and a model 3.0 shader; all I do is vertex manipulation (for inner- & outer radius + mesh billboarding for the outer side). The whole raymarching thing sounds too complicated to me. I don't generate the geometry on the fly, I modify existing geometry for that.
