public void Le(ref Vector wo, out float pdf, ref RgbSpectrum spd)
{
pdf = 1f / area;
if (Normal.Dot(ref TriangleNormal, ref wo) <= 0f)
{
spd.Mul(0f);
return;
}
spd.Mul(ref lightSpectra);
}
public void Le(ref Vector wo, out float pdf, ref RgbSpectrum spd)
{
var ti = SampleTriangleIndex();
var sampleN = triangleSampleData[ti].Item2;
var area = triangleSampleData[ti].Item1;
pdf = (1f / area) * (1f / mesh.TrianglesCount);
if (Normal.Dot(ref sampleN, ref wo) <= 0f)
{
spd.Mul(0f);
return;
}
var s = GlobalConfiguration.Instance.SpectralRendering ? (ISpectrum)spectra : gain; // Light sources are supposed to have flat color
spd.Mul(ref s);
}