I am using GeoServer 2.4.0 to view a UK map in my web map application by using the OpenLayers and a WMS service.
Now I am looking into view the terrain data in 3D with a WebGL-enabled browser and got some examples in GeoServer W3DS for the same. But there is no extension / plugin found to enable this service in my GeoServer. H ow can I activate W3DS, step by step.