Instanced 3d tileset: poor performance with large object model

Cesium for Unreal
1

Hello,

I generated 3d instanced tileset for test purposes, using i3dm.export tool. The tileset is small, it contains only 90 instances. When I use small object model, everything works fine. But when I replace it with large object model (approximately 120 mb), the rendering performance becomes very poor, Unreal Editor almost hangs.

Is there any way to solve the problem?

Thanks in advance.

3

Hi, thanks for trying this out and reporting a problem. Is it possible that you are simply running into a vertex limit on the hardware with a complex, replicated model? If you can make your tileset available, I’m happy to take a look and see if there’s some problem with the i3dm → EXT_mesh_gpu_instancing conversion and implementation in the Cesium for Unreal plugin.

Does the tileset appear to be rendered correctly?