Handy blender scripts

add_pbr.py

# quick add pbr texture names to properties
# used in grafkit2

for material in bpy.data.materials:
    for key in ["metalness", "normal", "roughness"]:
        material["mat_{0}".format(key)] = "pbr_{0}_{1}.jpg".format(material.name, key)
        
        
# a bit refined version, which add emissive map if emission was set
for material in bpy.data.materials:
    for key in ["metalness", "normal", "roughness", "emission"]:
        if key == "emission" and material.emit < 0.0001:
            continue
        material["mat_{0}".format(key)] = "pbr_{0}_{1}.jpg".format(material.name, key)