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Terrain Paint Studio is a tool that allows you to paint with layers on the unity terrain. This is the same concept that painting software (like photoshop) uses to enabling painting on different layers.
Terrain Paint Studio can be opened in unity by navigating to ‘window’ → ‘LiquidSphere Studio’ → and selecting ‘Terrain Paint Studio’. See the image below:
Once it’s open, you’ll see the tool’s UI window:
At this point, the first thing you can do is drag an existing terrain to the Terrain control (under Terrain Textures). The terrain in the image above already has textures assigned, but if it didn’t it would show a message about the terrain not having textures (more on that further below).
Now, if you hover on the terrain in your scene window, you should see a white brush circle appear. This is the brush control that will allow you to paint on your terrain, but first, you need to create a new Paint Layer.
Click the ‘+ New Layer’ button next to ‘Paint Layers’, and you’ll be prompted to input a name for your layer. This is optional; if you choose to not provide a name, a random UUID will be generated as the layer name.
Now that you have a new Paint Layer, you can start painting on your terrain. Hover on the terrain while holding Left Mouse Button to start painting.
Something to note - you can add terrain textures to the terrain directly like you normally would. Terrain Paint Studio will pick up the changes automatically (and show a sync message):