Describe the feature

Please give the option to have textures for left/right/top/bottom_end and horizontal/vertical_spanned.

Reasons why it should be considered

This would open up the opportunity for teyture pack creators to have shadows in their spatial pylon textures that look correct (see BDCraft).

Additional details

While that would be cool, this is an unfortunate limitation of our model system, and I don't think that adjusting it to support this use case is possible for now.