I have recently started working with Unity and was looking for textures for the background (castle walls and such pieces) on a game that I am thinking about eventually building. I noticed that the textures are often represented as ball shaped, such as for example in this sample image here:
For example, why are the texture patterns not shown as simply flat squares? I guess there is a reason behind this that has to do with mapping to 3d surfaces but I was not sure so I wanted to check here.
Why are textures often represented in spherical shapes in examples and previews?