Bitmap2Material 3 is dedicated to PBR. Use Unity 5.x in order to get correct results.
Be sure to enable the necessary outputs (in "Outputs" group at the bottom of the B2M parameters) in order to generate them:
- Base Color/Metallic/Glossiness for "Standard" shader.
- Diffuse/Specular/Glossiness for "Standard (Specular setup)" shader.
The Bitmap2Material filter is used in the same way as a standard Unity material.
You simply need to drag&drop the Bitmap2Material.sbsar file into the Project Browser.
It actually adds parameters on top of existing shaders and automatically plugs its outputs to
the shader texture slots.
Unity and Unity3D, Copyright © 2011 Unity Technologies.