Titan Quest Wheat Fields

Hatchiman

Would someone be able to explain how the the wheat field in Titan Quest was made? I love the way that it swings back and forth when a character runs through it. Is it a rigged model? An animated texture? etc.

Here's an example: http://youtu.be/yFekh-wop_c?t=5m02s (watch in 720p to see clearly)

alfalfasprossen

it's most likely a vertex-shader animation. maybe this would be a topic for Simon's game-art-art blog