lib/magma/meta/vkcube.cmx

{
    "program": {
        "binary": "bin/app"
    },
    "sandbox": {
        "dev": [
            "class/display-controller"
        ],
        "features": [
            "vulkan"
        ],
        "services": [
            "fuchsia.vulkan.loader.Loader"
        ]
    }
}