Note  Information in this topic pertains only to applications written in C++.

Note  The D3DRENDERSTATE_PLANEMASK render state is obsolete with the release of DirectX 7.0. To disable writes to the color buffer by using alpha blending, set D3DRENDERSTATE_SRCBLEND to D3DBLEND_ZERO and D3DRENDERSTATE_DESTBLEND to D3DBLEND_ONE.