Applying Light Probes for Effective Lighting Control in Unity HDRP
In this article, I’ll guide you through the process of utilizing Light Probes to improve the lighting in our office.
First, let’s enable the Light Probe Group. Navigate to Edit > Project Settings and, under the Lighting section in the HDRP menu (Quality), choose “Light Probe Groups” from the Light Probe System dropdown menu.
Next, in the Hierarchy panel, click the plus icon, and select Light > Light Probe Group.
This will introduce a box containing eight spheres into our scene.
You can click “Edit Light Probe Positions” to select, reposition, and duplicate them.
Our goal is to create a light probe network like this. Note that even placement is not necessary; it’s more effective to position more probes around the light sources.
Next, switch each of the light sources to Mixed mode instead of Realtime. In the Lighting tab, click “New” to generate a new light settings file. Then, click “Auto Generate” at the bottom to allow Unity to automatically adjust the lighting whenever there are modifications to lights, materials, or geometry. Additionally, I recommend marking the entire walls, ceiling, and floor as Static before initiating the light baking process.
Here’s the result, presented before and after implementing Light Probes:
As you can see, the lighting on our sphere now appears more realistic and precise.
