The Source engine is a 3D game engine developed by Valve Corporation. Its unique features include a large degree of modularity and flexibility, an artist-driven, shader-based renderer, accurate lip sync and facial expression technology, and a powerful, efficient and completely network-enabled physics system.
Learn how to use smoothing groups to eliminate hard shading where you don't want it.
Posted by Silverfisk on Apr 10th, 2011
First we make two pillars, then we make one of the pillars smooth. Then we go through what you need to keep in mind to make sure it works.
Wiki entry: Developer.valvesoftware.com