How to Add a Custom Skybox

We’re going to add a custom skybox to our scene. The first step to this is lighting settings. We’ll add a new set of Light Settings to our Project using Create / Lighting Settings.

Then, I’ll select them on the standard lighting settings via Window / Rendering / Lighting:

From there, we’ll choose some standard settings of a Lightmapper of Progressive GPU and to auto-generate the lights.

Next, we’ll go to the Environment tab and set the Skybox up. First, we need a Skybox material. We’ll make an arbitrary Material and name it Skybox, and drag it onto the Skybox Material. As you will notice, this surfaces an error. That’s OK. We’ll fix it soon.

The issue is that Unity expects Skybox materials to be, well, Skybox materials, so we go into the material, and change the Shader to a skybox material, like Procedural.

By default, this is the same as the default skybox, so let’s tweak it.

OK, so that brings up a sort of alien sky, so I’m happy with that.