When to use baked GI, when to use RTGI, and when to use mixed lighting?

Hi

When and/or where to use baked GI, when to use RTGI, and when to use mixed lighting?

Any guide, tip to share?

Thanks.

 

Baked GI for fully static scene and lighting(most Unreal Engine games)
Realtime GI for dynamic time of the day (GTA,Mirror's edge)

 

ok, but what if there is a night scene where you use a spotlight, can you bake static and user a spotlight over it?..

 

Baked

• You want high-quality lighting that runs on slow devices.
• You don't care about lights casting realtime shadows.
• You don't care about characters/objects casting realtime shadows.

Realtime GI

• You want realtime lighting, but also realtime indirect lighting, so it looks almost as good as baked.

Mixed

• You want the same as Baked, but also realtime shadows for dynamic objects.
• You want realtime lighting up close, but baked far away.

You should look at current games for the platform you are building for and see what they use.

 

You can combine light sources (baked,mixed realtime), but for whole scene lighting, you can choose Baked or Realtime GI in logic

The Logic :

Why do you want realtime GI for static light sources ?

Why you don't want to use Baked GI for static models?