Add a Custom Skybox
This section will go over changing the default Unity Skybox to an HDRI image.
What is a Skybox?
A 'Skybox' is a flat 2D image applied around your Space. The result simulates the experience of being in a much larger environment.
Note: The Skybox will affect the lighting in your scene, so it is best to add this early on.
You can download royalty-free Skyboxes (HDRI Images) from PolyHaven.com.
How to add a Custom Skybox to your Mona Space.
Download the EXR from the PolyHaven HDRI section (or elsewhere).
Save it into your assets folder in your Unity build.
Click on that file in Unity, change the 'Texture Shape > Cube' (in the inspector), and hit apply.
Create a new material.
Set the Shader (at the top of the inspector) to 'Skybox/Cubemap.'
Drag your EXR file onto the Cubemap (HDR) slot in the material.
Drag your material onto the scene's background; it should update with your Skybox!
Tip: If using the Skybox>Panoramic, uncheck "generate mipmaps" on your image texture settings.
For more information on adding skyboxes in Unity go to : Watch Skybox Tutorial here.
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