I've implemented a terrain in my application and I wanted to use several textures to render it with. I found a tutorial on the web http://www.mbsoftworks.sk/index.php?page=tutorials&series=1&tutorial=24 which used 3 textures and transitioned between them.
I've got everything working except that i get weird lines on the heights that the mixing occurs.
What could be the cause of this?
I've attached an image showing the problem