Baking Ambient Occlusion
Ambient Occlusion: a somewhat resource intensive way to make things just look better. If you’ve ever visited the Blender Artist forums, you’ll see people posting models that they have put their hearts and souls into for weeks, months, even years! Often you will see multiple comments below the first pictures blasting something along the lines of “TURN ON AO”!
Ambient Occlusion simulates the way light travels and bounces off of objects, especially objects that aren’t meant to be reflective. Describing it would be well and good, but I am a firm believer in visual learning. So instead, here are some video examples.
The first video shows a basic cube, with the inner faces extruded inward to give it some depth, as well as an interesting little ‘nub’ on top. Ambient Occlusion has not been activated, it is a simple render with simple lighting.