Hi all
I would like to ask you how do you solve global illumination aspect by lightmass. How lightmass solution computes light data into lightmap (what algorithms are used and step by step rendering process)? At the moment i found some posts about this aspect:
https://www.reddit.com/r/gaming/comments/248okb/no_this_is_not_real_lifeunreal_game_engine_4/
Though it is still not enough for me. Moreover i would like to understand how lightmaps are used in scene. How engine computes color on material by lightmaps. It would be most appreciated if someone explain all the rendering process and precomputation of GI in detail.