bspBrushCSG ( ABrush* Actor, UModel* Model, UModel* TempModel, UMaterialInterface* SelectedMa..., uint32 PolyFlags, EBrushType BrushType, ECsgOper CSGOper, bool bBuildBounds, bool bMergePolys, bool bReplaceNULLMaterialRefs, bool bShowProgressBar )