float3 XYZ2RGB( float3 _XYZ ) { return new float3( _XYZ.Dot( new float3( 3.2406f, -1.5372f, -0.4986f ) ), _XYZ.Dot( new float3( -0.9689f, 1.8758f, 0.0415f ) ), _XYZ.Dot( new float3( 0.0557f, -0.2040f, 1.0570f ) ) ); }