Im trying to make a landscape so I do this:
a plane with 0 of elevation, simulating sea.
a Island (loaded from height map) elevation starting at -5;
like this:
Island _____
/ \
/ \ Plane
-------------/---------------------------------
/ \
They´re both textured.
The problem (sorry about bad english):
intersection== where plane touchs insland
when Im more then 5.0f far from the “intersection” its very strange, its not smooth, like some big polygons and lines.
if the island dont touch the plane. everything its ok.
Island size(elevation): about 300f
plane size: about 5000f
texture size: 256x256