This content comes from the Cryengine 3 engine taken from Crytek presentation at SIGGRAPH 2009. The technique is called Light Propagation Volumes and it is used for Global Illumination and Massive Lighting, both which improve the lighting quality according to Crytek.
Massive lighting is a lighting of limited area with several of light sources (e.g. apartment indoor), according to Crytek.
