COUNTRY

GLES stencil: country border geometry from com.xweather.mapsgl.map.mapbox.GlStencilOsm tiles — Mapbox Streets admin (admin_level 0) or MapsGL boundary (admin_level 2). Requires BitmapLayerDescriptor.maskCountryIso3166Alpha2 (e.g. "US", "ES"). Draw only along matched borders (line ribbon), same stencil test as WATER.