Figure 6.26 - Area lights in windows

Since Eevee can't handle indirect lights for rendering, we have to use a

helper object for those calculations. The helper objects for Eevee have

the name of Probes.

For indirect lights, you use a probe called Irradiance Volume. Press the

SHIFT+A keys, and from the Light Probes group, add an Irradiance

Volume. Select the Irradiance Volume and use the S key scale until it

covers the entire scene (Figure 6.27).