---
title: "GI tab"
canonical: "https://documentation.chaos.com/space/VMAX/113587180/GI%20tab"
format: markdown
---
This page provides information on the GI tab of the Render Settings.   Overview The settings under the GI tab control the global illumination for the scene. UI Path:  ||Render Setup window|| >  GI  tab ( Renderer  set to  V-Ray ) Rollouts The rollouts under this tab include: Global Illumination rollout Controls GI settings and sets the primary and secondary GI engines. Determines which additional rollouts are exposed. Read more Primary engine rollout Rollout for the  Primary engine  (Irradiance map, Brute force, or Light Cache). Find out more about each primary engine:  Irradiance map ,  Brute force , and  Light Cache . Secondary engine rollout Rollout for the  Secondary engine  (Brute force, or Light Cache). Find out more about each secondary engine:  Brute force  and  Light Cache . Caustics rollout Enables and controls the rendering of caustic effects. Read more