The most realistic, but also the slowest, 3D rendering technique where you spawn photons from all light sources and use realistic photon physics (including reflection, refraction, diffraction, dispersion, etc...) to find out which ones reach the camera. This technique may also be used to pre-render photon maps to add a more realistic touch to games.
The Game Dictionary™ is a trademark of GameDev.net LLC. No duplication, reproduction, or transmission of the Game Dictionary or its content is allowed without the consent of GameDev.net LLC.