In order to bake Material ID maps in Substance Painter from Blender, the option to export in .fbx is a must. There are add-ons like IDMapper that make assigning surfaces with vertex color information easy, but this vertex color information doesn't transfer with the .obj format making this add-on useless for baking ID maps in Substance Painter from vertex color information.
In order to bake Material ID maps in Substance Painter from Blender, the option to export in .fbx is a must. There are add-ons like IDMapper that make assigning surfaces with vertex color information easy, but this vertex color information doesn't transfer with the .obj format making this add-on useless for baking ID maps in Substance Painter from vertex color information.