Mark the GameObject as a Static Occluder in the occlusion culling system.
For more information, see the documentation on the Occlusion Culling system.
void StaticEditorFlagsExample(){ // Create a GameObject var go = new GameObject("Example"); // Set the GameObject's StaticEditorFlags var flags = StaticEditorFlags.OccluderStatic; GameObjectUtility.SetStaticEditorFlags(go,flags); }