ProceduralMaterial loading behavior.
| DoNothing | Do not generate the textures. RebuildTextures() or RebuildTexturesImmediately() must be called to generate the textures. | 
|---|---|
| Generate | Generate the textures when loading to favor application's size (default on supported platform). | 
| BakeAndKeep | Bake the textures to speed up loading and keep the ProceduralMaterial data so that it can still be tweaked and regenerated later on. | 
| BakeAndDiscard | Bake the textures to speed up loading and discard the ProceduralMaterial data (default on unsupported platform). | 
| Cache | Generate the textures when loading and cache them to disk/flash to speed up subsequent game/application startups. |