Tangent Space
Tangent Space Plugins List
Substance Painter
In Substance Painter the Tangent Space plugin cannot be changed, it will always be MikkTSpace. However there is a parameter to alter slightly its behavior to make it compatible with other applications:
| Parameter | Compatible Application |
|---|---|
| Compute tangent space per fragment: Disabled | Compatible with xNormal, Unity 5.3 or newer. |
| Compute tangent space per fragment: Enabled | Compatible with Unreal Engine 4, Blender and Unity HDRP workflow. |
Substance Designer
Substance Designer supports the following algorithm:
| Filename | Description |
|---|---|
| mikktspace.dll | MikkTSpace, Tangent Space algorithm based on Morten S. Mikkelsen work. Compatible with xNormal, Unity 5.3 or newer. |
| mikkunrealtspace.dll | MikkTSpace, Tangent Space algorithm based on Morten S. Mikkelsen work. Compatible with Unreal Engine 4, Blender and Unity HDRP workflow. |
| unitytspace.dll | Tangent Space algorithm based on Unity 4. |
It is possible to write a custom Tangent Space plugin. A header file named tangentspaceplugin.h is available in the installation folder under Substance Designer/SDK/tangentspace and can be used as an interface.
Setting a custom Tangent Space
Substance Painter
Substance Painter does not support custom Tangent Space plugins at the moment. This means that if Tangents and Binormals are not present on the low-poly mesh (used to create the project) they will be recomputed based on the MikkTSpace algorithm.
Substance Designer
To set the tangent space algorithm in Substance Designer follow these steps:
- Choose Edit > Preferences.
- Click on Projects.
- Navigate to the General tab. Scroll until the section 3D Scenes is visible.
- Click on the three dots (...) to load a custom plugin.
Substance Automation Toolkit
When baking with the Automation Toolkit it is possible to specify the Tangent Space plugin with a specific command line argument:
sbsbaker normal-from-mesh --tangent-space-plugin "C:/Substance Designer/plugins⁄tangentspace⁄mikktspace.dll" ...
