Function EvalH4

SampleFramework11/v1.02/Graphics/SH.cpp:133–137

}

float EvalH4(const H4& h, const Float3& dir)
{
    H4 b = ProjectOntoH4(dir);
    return H4::Dot(h, b);
}

H4 ConvertToH4(const SH9& sh)
{