Mask layers allow you to combine material layers using grayscale textures as masks. Each mask must have a grayscale texture assigned to it. You can source these textures from Toolbag’s Library, paint them using a Texture Project within Toolbag, or create them using third-party applications.
In Mask Mode, you can load multiple images, each supporting up to four masks via RGBA channels. This enables a virtually unlimited number of material layers. While you can add as many masks and material layers as needed, be aware that excessive use may lead to performance issues.

Setting | Description |
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Mask Texture Slot | Add a mask texture by clicking on the slot or dragging and dropping one from the Library. |
Delete Mask | Delete a mask from the list. |
Add Mask | Add an extra mask slot to create more variety. |
Layer Visibility | Hide or show the material layer contents. |
Delete Layer | Delete the material layer. |
Mask Selection | Select the mask that will be used to blend the current layer. |
Channel Selection | Select the channel of the texture that will be used for blending. This is useful when, instead of using multiple single textures, a single texture is used with different grayscale maps in the different texture channels: Red, Green, Blue, and Alpha. |
UV Selection | Select the UV set used for blending. |
Brightness | Adjust the brightness to make the mask more or less intense. |
Contrast | Adjust the contrast to make the mask sharper or smoother. |
Add Material Layer | Add an extra material layer. Note: Adding too many layers can cause performance issues. |