struct ControlPoint
{
    bool b : MY_BOOL;
};

struct HullPatchOut {
    float edge [3] : SV_TessFactor;
    float inside : SV_InsideTessFactor;
};

[domain("tri")]
[partitioning("fractional_odd")]
[outputtopology("triangle_cw")]
[patchconstantfunc("HullConst")]
[outputcontrolpoints(3)]
ControlPoint Hull (InputPatch<ControlPoint,3> v, uint id : SV_OutputControlPointID) { return (ControlPoint)0; }
HullPatchOut HullConst (InputPatch<ControlPoint,3> v) { return (HullPatchOut)0; }

[domain("tri")]
float4 Domain (const OutputPatch<ControlPoint,3> vi) : SV_Position { return 0; }