bedrock-samples/resource_pack/render_controllers/item_default.render_controllers.json

{
  "format_version": "1.10",
  "render_controllers": {
    "controller.render.item_default": {
      "geometry": "geometry.default",
      "materials": [ { "*": "variable.is_enchanted ? material.enchanted : material.default" } ],
      "textures": [ "texture.default", "texture.enchanted" ]
    }
  }
}