Cubemap generation mode for TextureImporter.
Cubemap textures can be generated from 2D texture using one of these modes.
Additional resources: TextureImporter.generateCubemap.
| Spheremap | Generate cubemap from spheremap texture. |
| Cylindrical | Generate cubemap from cylindrical texture. |
| FullCubemap | Generate cubemap from vertical or horizontal cross texture. |
| AutoCubemap | Automatically determine type of cubemap generation from the source image. |