How do i use a font atlas in Unity?

I prepared a font atlas with the resolution of 4096x4096. The main reason i need to use a font atlas is because of beveling/gradient and im unable to reproduce that using textures alone, hence i created a font atlas.

Example of the font atlas im using

Thank you.

Unity has no native support for Font Atlases. There are multiple plugins on the asset store that do support it though. I recommend using NGUI, which is a custom GUI solution that does not use unity GUI.