I can see how to add 2d symbols for points on a graphics layer using SimpleMarkerSymbol but is it possible to add 3D symbols for points on graphics layer (not feature layer) using:
var symbol = new PointSymbol3D({
symbolLayers: [new ObjectSymbol3DLayer({
width: 5 //width of object in meters
height: 10, //height of object in meters
depth: 15, //depth in meters
resource: { primitive: "cube" },
material: { color: "red" }
})]
});