A Dirt Map in Vanda Engine 1 defines the “noise” of a surface, such as that representing fine grain. Dirt Mapping in Vanda Engine 1 uses hardware multitexturing to combine a regular diffuse texture -If it exist- with a dirt map. Vanda Engine 1 maps the Dirt Map to the 3D object based on its 2nd UV set.
To apply a Dirt Map to a skin or geometry, follow these steps:
· Select the instanced geometry or skin you want to apply Dirt Map to to its geometry.
· Click the 
button or go to Modify | Geometry | Material... menu.
· Now if your object contains 2nd UV set, Dirt... button in Material Editor is activated.
· Click the Dirt... button. This opens a standard File dialog that lets you select a DDS file.
· Select your desired Dirt Map and Click Open.
To remove a Dirt Map from a skin or geometry, follow these steps:
· Select the skin or instanced geometry.
· Click the button or go to Modify | Geometry | Material... menu.
· Now select the - button next to the Dirt button.
In a new dialog box that appears, click Yes button.
