Hi guys,
Hi TheBadger,
That's for ingame skybox.
- Cube map are very annoying to paint over
- Spherical gives good resolution on horizon, but doesn't work that great on the dome pole (still a good choice for racing games).
- Fisheye (also called stereographic projection) is really great for fps, and the easiest to deal with in compositing/paint over.
There are many options/workflow to switch from one type of projection to an other ... but I have to say having fisheye cam in Terragen is such a time saver !