Probably is - I was astonished when I first saw this raymarched procedural terrain at shadertoy: https://www.shadertoy.com/view/4slGD4
::rant:: Crashed firefox( latest version ); tried chrome, loads forever and then doesn't work. For whom is this made, if it doesn't work on my i5 with a decent gpu?
Terrain rendering is probably one of the things where GPU-based raymarching really is an option nowadays.
http://iquilezles.org/www/articles/terrainmarching/terrainma...