To enable Enlighten Realtime Global Illumination in your Scene, open the Lighting window (menu: Window > Rendering > Lighting) and enable Realtime Global Illumination.
To disable the effect of Realtime GI on a specific Light, select the Light GameObjectThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info
See in Glossary and, in the Light component, set the Indirect Multiplier to 0. This means that the Light doesn’t contribute any indirect light to the SceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
See in Glossary.
To disable Realtime GI altogether, open the Lighting window (menu: Window > Rendering > Lighting) and uncheck Realtime Global Illumination.
For detailed step-by-step advice on using EnlightenA lighting system by Geomerics used in Unity for Enlighten Realtime Global Illumination. More info
See in Glossary Realtime Global IlluminationA group of techniques that model both direct and indirect lighting to provide realistic lighting results.
See in Glossary, see the Unity tutorial on Precomputed Realtime GI.
Note that Light ProbesLight probes store information about how light passes through space in your scene. A collection of light probes arranged within a given space can improve lighting on moving objects and static LOD scenery within that space. More info
See in Glossary behave differently when you enable Enlighten Realtime Global Illumination.
In order to react to runtime changes in Scene lighting, they sample lighting iteratively at runtime.
When you disable Enlighten Realtime Global Illumination in a Scene, Light Probes only use baked lighting data. This means that they don’t react to runtime changes in Scene lighting.
If a Light also casts shadows, Unity renders both dynamic and static GameObjects in the Scene into the Light’s shadow map. The Material Shaders of both static and dynamic GameObjects sample this shadow map so that these GameObjects cast real-time shadows onto each other. The Shadow Distance setting determines the maximum distance at which shadows begin to fade out and disappear entirely, which in turn affects performance and image quality.
Enlighten Realtime Global Illumination results also include soft shadows, unless the Scene is very small. These shadows are typically more coarse-grained than what lightmapping can achieve.
To modify Shadow Distance settings, navigate to Edit > Project Settings > Quality > Shadows.