A software developer has reverse-engineered Deus Ex: Human Revolution to uncover the rendering process behind the game, and has written a detailed study of his findings.
Using the Renderdoc debugger, Adrian Courreges dissected various frames and has described his findings on the techniques and algorithms used by the development team at Eidos Montreal.
The study looks at shadow maps, screen space ambient occlusion, light pre-pass, transparent objects and more to break down the making of a particular scene, as well as a further analysis of depth of field in the game.
If you want to learn more about the rendering process in a game like Deus Ex: Human Revolution, you can check out the full graphics study here.