D3D12XBOX_COMPUTE_SHADER_LAUNCH_PARAMETERS

typedef struct D3D12XBOX_COMPUTE_SHADER_LAUNCH_PARAMETERS
{
    union
    {
        struct
        {
            UINT Flags          :  7;
            UINT LDSSize        :  9;
            UINT NumThreadZ     : 16;
        };
        UINT Dword0;
    };
    union
    {
        struct
        {
             UINT NumThreadX    : 16;
             UINT NumThreadY    : 16;
        };
        UINT Dword1;
    };
} D3D12XBOX_COMPUTE_SHADER_LAUNCH_PARAMETERS;