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

{
  "format_version": "1.10.0",
  "render_controllers": {
    "controller.render.egg": {
      "arrays": {
        "textures": {
          "Array.textures": [
            "Texture.default",
            "Texture.warm",
            "Texture.cold"
          ]
        }
      },
      "geometry": "Geometry.default",
      "materials": [ { "*": "Material.default" } ],
      "textures": [ "Array.textures[v.index]" ],
      "filter_lighting": true
    }
  }
}