Ambient Occlusion
Eagle Engine supports SSAO (screen-space ambient occlusion) and GTAO (ground-truth ambient occlusion). These techniques are used for efficiently approximating the ambient occlusion effect in real time.
Note
They do nothing if there’s no ambient lighting (for example, IBL). It’s also affected by material’s Ambient Occlusion
input.
SSAO
For SSAO, you can change the following settings:
Samples. Affects how many samples (points) to consider when calculating an ambient occlusion. The higher, the better. But be careful, since making it too high will affect performance.
Radius. Occluders search radius
Bias. It is a scalar that affects the calculation that determines if a sample is an occluder.
GTAO
GTAO has two settings: Samples, and Radius. They have the same meaning as for SSAO.
Note
Currently, GTAO is not production ready. It doesn’t always work as intented.