i use InstancedMesh to show many Cacti on a big Terrain Mesh, lets say 256 Cactis on a 512x512 Mesh,
the drawin is done with 1 draw call but without culling a lot of triangles needs to be drawn,
the idea is to split the one 256 InstancedMesh in more clusters and use culling for this.
is there any right to use system for this in Threejs ?
Using clusters is one way you can do it, but 256 doesn’t sound like too many. For the IndexedVolume i use auto-instancing with culling as well as clusters stored in nodes for specific kind of assets, but it requires a lot for it to pay off.