Use occluders for performance improvement

[elvisish]

Here's the issue/proposal: #101
I haven't the knowledge or experience, but it would be great for performance if TBLoader could automagically build occlusion meshes for the world geometry.

[solitaryurt]

You'd need to split the map into multiple func_group's. If you're using just one large world_spawn you'll have one MeshInstance3D for your map, and as a result it will never cull when occluded (it will never occlude).

Splitting into multiple func_group's will allow for portions of the map to occlude and therefore cull.

[elvisish]

You'd need to split the map into multiple func_group's. If you're using just one large world_spawn you'll have one MeshInstance3D for your map, and as a result it will never cull when occluded (it will never occlude).

Splitting into multiple func_group's will allow for portions of the map to occlude and therefore cull.

Is that how qodot/func_godot handles it? I thought it just added many occluders based on the mesh brushes (although I could be wrong, I haven't used it much),

[solitaryurt]

Last I tried func_godot, it was splitting each brush into a MeshInstance3D node.
That would correctly cull each brush that was occluded, but there is a heavy performance cost depending on the size of your map.