- Illuminate
UDK gives you all the options to perfectly light any scene. Ambient occlusion, per-pixel lighting, fill lighting and fully dynamic specular lighting and reflections are all possible with UE3. - Unreal Lightmass
Unreal Lightmass is an advanced global illumination solver. Light your world with a single sun, giving off soft shadows, and let the diffuse interreflection (color bleeding) do the work. - Detailed Shadows
Advanced shadowing with support for four techniques:- Dynamic stencil shadow volumes.
- Dynamic characters casting dynamic soft shadows.
- Ultra high-quality and high-performance pre-computed shadow masks.
- Directional light mapping with static shadowing and diffuse normal-mapped lighting. An unlimited number of lights can be pre-computed and stored in a single set of texture maps.

