A PBR (Physically Based Rendering) material to be used on 3D objects. Uses an ORM texture. ORMMaterial3D's properties are inherited from [BaseMaterial3D]. Unlike [StandardMaterial3D], ORMMaterial3D uses a single texture for ambient occlusion, roughness and metallic maps, known as an ORM texture. $DOCS_URL/tutorials/3d/standard_material_3d.html