Function GenerateSGInnerProductIrradianceTable

BakingLab/BakingLab.cpp:939–961

}

static void GenerateSGInnerProductIrradianceTable(float sharpness, const wchar* filePath)
{
    std::string output;

    SG sgLight;
    sgLight.Amplitude = 1.0f;
    sgLight.Axis = Float3(0.0f, 0.0f, 1.0f);
    sgLight.Sharpness = sharpness;

    const uint64 NumPoints = 50;
    for(uint64 pointIdx = 0; pointIdx < NumPoints; ++pointIdx)
    {
        float theta = Pi * pointIdx / (NumPoints - 1.0f);
        Float3 normal = Float3(std::sin(theta), 0.0f, std::cos(theta));

        SG cosineLobe = CosineLobeSG(normal);
        float irradiance = Max(SGInnerProduct(sgLight, cosineLobe).x, 0.0f);

        output += MakeAnsiString("%f,%f\n", theta, irradiance);
    }

    WriteStringAsFile(filePath, output);
}

static void GenerateSGFittedIrradianceTable(float sharpness, const wchar* filePath)
{