Presets are saved on the disk as individual files and can be shared with any other user of Substance 3D Painter.
These presets are located in the shelf under the folder " export-presets ", which is located here:

• Windows : C:\Users\*username*\Documents\Substance 3D Painter\shelf\export-presets
• Mac OS : Macintosh > Users > *username* > Documents > Substance 3D Painter > shelf > export-presets

When a preset is used to export textures, the preset file is automatically included in the resources of the project.
This allows the sharing and/or moving of a project to an other computer while maintaining the presets for exporting the textures.
Only the last used preset is saved in the project. However if Substance 3D Painter detects a preset that has the same name, the preset inside the project the will be marked as "Outdated" in the list.

Each time an input map is dragged and dropped, a random color will be generated. This provides a visual cue for the channels and the corresponding input map that is loaded.
The button will also indicate what is loaded into the slot:

• Background color: indicates which input maps are loaded.
• RGB bar: indicate that the R , G and B channels from the input map is loaded.
• Red bar: indicate that the red channel from the input map is loaded.
• Green bar : indicate that the green channel from the input map is loaded.
• Blue bar: indicate that the blue channel from the input map is loaded.
• Gray bar: indicate that the input map is loaded as a grayscale (either from an RGB to Grayscale conversion or because the input is already in grayscale).
• Black/White line: indicate that the alpha channel from the input map is loaded. In Substance 3D Painter the alpha from an input correspond to the total area painted.

Folders are automatically converted as groups in case the export format is set as PSD (Photoshop) file format.

If a slot refers to a channel that is not present in the Texture set during the export, a default color will also be generated.
This color changes depending on the channel which gives the best neutral value.
Example : If missing, the height channel will be generated with a default gray value.

There are two types of maps:

• Input maps : direct channels that can be added in a texture set. Via the TextureSet settings panel.
• Mesh maps : Textures present in the additional map slots of a Texture Set (baked textures).
• Converted maps: virtual textures, those textures are generated during the export based on the channels present in the document.
  - Normal OpenGL/DirectX : Outputs a normal in the dedicated space by combining the normal from the additional maps, the height and the normal channel.
  - Mixed AO : Combine the Ambient Occlusion additional map with the Ambient Occlusion channel.
  - Diffuse : Diffuse color generated from the BaseColor and Metallic channels (metallic parts will be replaced with a black color).
  - Specular : Specular color generated from the BaseColor and Metallic channels.
  - Glossiness : Inverse of the roughness channel.
  - Unity4 Diffuse : Diffuse color generated from the BaseColor to match Unity4 shaders.
  - Unity4 Gloss : Glossiness generated from the Roughness and Metallic channel to match Unity4 shaders.
  - Reflection : Export a map where white indicate a dielectric materials and other colors for metallic materials
  - 1/ior : 1 divided by the ior value, ior is generated from the metallic map : 1.4 for dielectrics, 100 for metals (black color)
  - Glossiness² : Square version of the glossiness channel (Glossiness * Glossiness)
  - f0 : Reflectance value at fresnel 0 (0.04 for dielectrics, 1.0 for metallic)