First real test of new spectral renderer

I just ran my first serious end to end test of my (still primitive) spectral renderer.   I turned to the trusy Macbeth color checker (data from BabelColor which Brian Cabral turned me onto).   I used Chris Wyman's approximations to the XYZ tristimulous curves and they were so much more pleasant than typing that junk it.  This is the chart with just a uniform background(lambda) = constant and no lights.  Looks like it all works fine.  This was a great test case (which is why everybody uses it for spectral work) and it shook out several bugs.