Please Help: Unable to Override "Water Material" in Google Photorealistic 3D Tiles

[janine]

Hey, sorry to butt in here! I noticed this is a recurring question – it has to do with the fact that the Water Material is only used for terrain datasets that are delivered as quantized-mesh.

GitHub - CesiumGS/quantized-mesh: Specification for streaming massive terrain...

The water mask is delivered as metadata in quantized-mesh that Cesium for Unreal can consume in a material layer. Google Photorealistic 3D Tiles does not contain an equivalent (yet!).

Here’s my suggestion from a different post:

Is there a way to update the water material in Unreal?

Hi @da13d3ac0n, welcome to the community! I’m afraid that Google Photorealistic 3D Tiles does not contain a water mask, so the water material is never applied. If you want to simulate a water effect, you may need to do in the typical Material slot. We’ve never tried to develop a material for this, but perhaps you could check for blue hues in the texture, and apply your water effect to them?