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fixed a serious issue in spectral interpolation (caught by @merlinND)

master
Wenzel Jakob 2020-01-31 12:12:09 +01:00
parent 26355676fa
commit cfeb7766e7
1 changed files with 1 additions and 1 deletions
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2
src/libcore/spectrum.cpp
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@ -703,7 +703,7 @@ Float InterpolatedSpectrum::eval(Float lambda) const {
b = m_wavelengths[idx1], b = m_wavelengths[idx1],
fa = m_values[idx1-1], fa = m_values[idx1-1],
fb = m_values[idx1]; fb = m_values[idx1];
return math::lerp((lambda - a) / (b-a), fb, fa); return math::lerp((lambda - a) / (b-a), fa, fb);
} else if (idx2 == idx1+1) { } else if (idx2 == idx1+1) {
/* Hit a value exactly */ /* Hit a value exactly */
return m_values[idx1]; return m_values[idx1];