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

{
  "format_version": "1.8.0",
  "render_controllers": {
    "controller.render.tropicalfish": {
      "arrays": {
        "geometries": {
          "Array.models": [ "Geometry.typeA", "Geometry.typeB" ]
        },
        "textures": {
          "Array.types": [ "Texture.typeA", "Texture.typeB" ],
          "Array.patterns": [
            "Texture.aPattern1",
            "Texture.aPattern2",
            "Texture.aPattern3",
            "Texture.aPattern4",
            "Texture.aPattern5",
            "Texture.aPattern6",
            "Texture.bPattern1",
            "Texture.bPattern2",
            "Texture.bPattern3",
            "Texture.bPattern4",
            "Texture.bPattern5",
            "Texture.bPattern6"
          ]
        }
      },
      "geometry": "Array.models[variable.TropicalFish.Base]",
      "materials": [ { "*": "Material.default" } ],
      "textures": [
        "Array.types[variable.TropicalFish.Base]",
        "Array.patterns[variable.TropicalFish.Pattern]"
      ]
    }
  }
}