Just wanted to say that I found the solution here:
https://www.reddit.com/r/godot/comments/13edbd9/comment/jjpslqb/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
- Create a TileMapLayer node
- In the inspector, press Tileset > New Tileset
- In the ‘TileSet’ tab at the bottom of the screen, import your diffuse map atlas
- In the Atlas properties in the TileSet tab, open the Texture dropdown and press ‘New CanvasTexture’
- Click the newly created ‘CanvasTexture’ to open its properties
- Select your diffuse, normal, and/or specular maps
I hope that helps!