imageworks/OpenShadingLanguage — pull request #218 by wesvdes (2013-01-03 01:22:50+00:00)
Title: Update src/liboslexec/opcolor.cpp

After converting XYZ colors to RGB they should not be clamped at zero. RGB values with negative weights may be out of gamut for sRGB calibrated displays, but they still represent real colors and are needed as such during rendering.