Support TMS indexing in TileLayer

I’m using MVT Layer in deckgl with GeoServer and when the MVT layer is trying to fetch the data from the url the inverted y axis i.e. -y goes undefined.

new deck.DeckGL({
                initialViewState: {
                    longitude: -79.3832,
                    latitude: 43.6532,
                    zoom: 14
                },
                controller: true,
                layers: [
                    new deck.MVTLayer({
                        data: "/geoserver/gwc/service/tms/1.0.0/"+layer+"@EPSG%3A"+projection_epsg_no+"@pbf/{z}/{x}/{-y}.pbf",
                    })
                ]
            })

For the above code MVT layer is considering -y as undefined as below.

/geoserver/gwc/service/tms/1.0.0/ibi:SWwidths_v1@EPSG%3A900913@pbf/14/4579/undefined.pbf.

I even tried using open layers with the same URL and it was considering -y properly.

[kylebarron]

The difference between XYZ and TMS indexing is a flipped y coordinate, see: https://gist.github.com/tmcw/4954720.

To support this we could have a tms prop on the TileLayer, and internally call y = Math.pow(2, z) - y - 1; when the flag is true.

[Pessimistress]

This is now available in 8.3.0-beta