Map.txd -

Convert textures to .tga or .png before importing into a TXD editor (like MagicTXD).

These are the primary colors and textures of your models (e.g., wall_diffuse.png , roof_tiles.png ). map.txd

Concrete, asphalt, brick walls, graffiti, store signs, metal gratings. Convert textures to

Keep textures as power-of-two dimensions for better performance ( roof_tiles.png ). Concrete

Add these to make surfaces look wet, metallic, or polished (e.g., metal_spec.png ).

Use 32-bit PNGs or TGAs to create transparent areas for chain-link fences, leaves, or glass (e.g., fence_mask.png ).