Enums for stock (built-in) materials. 
| Enumerator | 
|---|
| MFMat_White | White material (This is a flat white material for untextured simulation)  | 
| MFMat_Unavailable | Unavailable material (Used when a desired material is unavailable)  | 
| MFMat_SysLogoSmall | Small System Logo.  | 
| MFMat_SysLogoLarge | Large System Logo.  | 
| MFMat_USB | USB Icon material.  | 
| MFMat_Connected | Connected Icon material.  | 
| MFMat_Disconnected | Disconnected Icon material.  | 
| MFMat_Power | Power Icon material.  | 
| MFMat_Charging | Charging Icon material.  | 
| MFMat_Max | Maximum stock material.  | 
| MFMat_ForceInt | Force StockMaterials to an int type.  |