im the developer of irr4delphi and the last past ears im woking on the engine creating games and demos just for may pleasure.
im not release nothing because i program just 4 fun and learning.
on the last night i create two terraina one from the old truevision engine and from the game institute
the two engine use terrain quads but institute use triangle strip .
its not mutch but i want to share with the community.
the two terrain can be programmed with quadtree




sources (http://www.box.com/s/3r6zcu78zygpgzqg6v7i)
and by the way sory my bad inglish im portuguese . troika ,fmi,prime minister and presidente of portugal f*** my a** so badly.