import_fbx.py

    _(); del _

    perfmon.step("FBX import: Cycles z-offset workaround...")

    def _():
        # Annoying workaround for cycles having no z-offset
        if material_decals and use_alpha_decals:
            for fbx_uuid, fbx_item in fbx_table_nodes.items():
                fbx_obj, blen_data = fbx_item
                if fbx_obj.id != b'Geometry':
                    continue
                if fbx_obj.props[-1] == b'Mesh':
                    mesh = fbx_item[1]

                    if decal_offset != 0.0:
                        for material in mesh.materials:
                            if material in material_decals:
                                for v in mesh.vertices:
                                    v.co += v.normal * decal_offset
                                break

                    if use_cycles:
                        for obj in (obj for obj in bpy.data.objects if obj.data == mesh):
                            obj.cycles_visibility.shadow = False
                    else:
                        for material in mesh.materials:
                            if material in material_decals:
                                # recieve but dont cast shadows
                                material.use_raytrace = False
    _(); del _

    perfmon.level_down()

    perfmon.level_down("Import finished.")
    return {'FINISHED'}