Alpha channel is lost when creating LODs for Unity
When exporting LODs for use in Unity, textures that have alpha channels (such as hair) lose their alpha channel.
To reproduce: * Create a character with hair * Export to Unity and generate LODs * Import to Unity * Notice the LODs have no alpha channel on the hair which means they cannot be used for close-up rendering
To fix this:
1. The baked texture should include the alpha channels of the source textures and 2. There should be an option for hair to be on a separate material (just like eyebrows)