And the result would be flatheaded mountains. So unrealistic.
Then apply some Gaussian blur to this.

Anyway, do however you want, but I'd like to be able to generate chunks of texture (it certainly is possible as Minecraft, Minetest-c55 and other mineclones features semi-infinite world and without making it with chunks it wouldn't work).

And don't bother with glscene thing. I can wait for proper solution (have other things to do in meantime anyway, like writing state machine and collision system).