These materials are currently supported. You can customise their absorption/scattering/transmission values in [[Materials]].
```cs
public enum MaterialType
{
Air = 0,
Brick,
Cloth,
Concrete,
ConcretePolished,
Dirt,
Grass,
Ice,
Leaf,
Marble,
Metal,
Mud,
Rock,
Sand,
Snow,
Tree,
WoodIndoor,
WoodOutdoor,
}
```