WARP (Windows Advanced Rasterization Platform) is a component of the DirectX graphics technology that was introduced by the Direct3D 11 runtime. The Direct3D 11 runtime is installed on Windows 7, Windows Server 2008 R2, and Windows Vista with the [KB971644] update.
SwiftShader is a high-performance CPU-based implementation of the OpenGL ES and Direct3D 9 graphics APIs12. Its goal is to provide hardware independence for advanced 3D graphics.