I would like to know how to make everything except land transparent using Cesium for Unity, like in this image.
Hi @gtk2k, welcome back to the forum!
Unfortunately there isn’t a direct setting to make the oceans transparent. Although there is a water mask with Cesium World Terrain, it might not be as pixel-perfect as the image you shared.
However, you might be able to achieve this through a Material effect. You can make a copy of the CesiumDefaultTilesetShader and override the tileset’s Opaque Material property in that way. It might involve checking for blue colors in the raster overlays, then, giving those parts an Opacity of 0. If you try this out, let us know how it goes!