#ifdef BlendAdd

    UNITY_APPLY_FOG_COLOR(i.fogCoord, res, half4(0,0,0,0));

#endif

#ifdef BlendAlpha

    UNITY_APPLY_FOG(i.fogCoord, res);

#endif

#ifdef BlendMul

    res = lerp(half4(1,1,1,1), res, res.a);

    UNITY_APPLY_FOG_COLOR(i.fogCoord, res, half4(1,1,1,1)); // fog towards white due to our blend mode

#endif

#ifdef BlendMul2

        res = lerp(half4(0.5,0.5,0.5,0.5), res, res.a);

        UNITY_APPLY_FOG_COLOR(i.fogCoord, res, half4(0.5,0.5,0.5,0.5)); // fog towards gray due to our blend mode

#endif