This file is a complementary map for the heightmaps in the game describing (at least) the materials that the game world is using.
This map describes the materials used by the terrain renderer.
| Channel | Size | Description |
|---|---|---|
| Red | 1 | Material ID's. Range from 0-88. Maybe used by the lookup table in TSCB (also 0-88) |
| Green | 1 | Unknown |
| Blue | 1 | Unknown |
| Alpha | 1 | Unknown |