Chapter 49: Screen-space Ambient Occlusion

Prerequisite: You should read the chapter on hemisphere sampling before reading this chapter.

Slide Deck


Sample Bias

The middle box shows a set of random points generated with equal distribution across the square region.

The right box shows these points normalized onto the unit circle in black. In red, we show these points scaled to the distribution used in our SSAO implementation.

On the left box, we have the distribution of points colorized for directions. Green directions have few points and red directions have many points.