// Each pixel is rendered if its pixel center is contained by the geometry.
//
D2D1_ANTIALIAS_MODE_ALIASED = 1,
D2D1_ANTIALIAS_MODE_FORCE_DWORD = 0xffffffff

ID2D1HwndRenderTarget* m_pRT;

m_pRT->SetAntialiasMode(D2D1_ANTIALIAS_MODE_FORCE_DWORD);
//关闭抗锯齿