Dirt 2: Best graphics on PC due to DirectX 11 features on PC Games Hardware looks at what DirectX 11 support is bringing to DiRT 2, Codemasters' racing game that's coming to PCs this December. Topics include their game engine, technical aspects of developing for DirectX 11, data streaming, optimizations for multiple CPUs and GPUs, physics, DX11 advantages, Windows XP support, and more.