Planet Creator for Unreal - Update 2021 - WIP 2

I added two new materials for the asset pack: ice and volcanic planets. This will allow more specialized customizations while keeping the shaders lighter. I also added rings and ring shadows. The shadows are non calculated by the default lighting system of Unreal, in fact they are part of the planet shader: this because in my tests translucent materials had many issues with the atmosphere and dynamic lighting.
I used Blender and Gimp to create the backgrounds.