You've probably run into terrain where the steep sides of a cliff have their texture stretched so much that it looks unrealistic. Maybe you have a procedurally generated world that you have no way to UV unwrap and texture. Tri-planar mapping provides an elegant technique to solve these issues and give you realistic textures from any angle or on any complex shape. Here you will learn about the tech
![Use Tri-Planar Texture Mapping for Better Terrain | Envato Tuts+](https://cdn-ak-scissors.b.st-hatena.com/image/square/1b9b85684de0bead837daa7f5bf899bdaaff8430/height=288;version=1;width=512/https%3A%2F%2Fcdn.tutsplus.com%2Fgamedev%2Fuploads%2F2013%2F12%2FtriPlanar400.png)