adopt_sampler& _fmip_point () { if (C) C->i_Filter_Mip(stage,D3DTEXF_POINT); return *this; }
adopt_sampler& _fmip_linear () { if (C) C->i_Filter_Mip(stage,D3DTEXF_LINEAR); return *this; }
adopt_sampler& _fmip_none () { if (C) C->i_Filter_Mip(stage,D3DTEXF_NONE); return *this; }