[Radiance-general] Radiance 3.7.2 patch release

[Greg Ward]

Well, another significant bug was discovered in the interreflection  
calculation of the new release, prompting me to create a new patch  
distribution, version 3.7.2.  This may be found in the usual place at:

     http://radsite.lbl.gov/radiance/download.html

I have also recompiled everything under Linux, FreeBSD, and Mac OS X,  
so the posted binaries contain the fix.  The problem manifests in  
certain complex environments, causing severe underestimation on rare  
occasions, and didn't show up in my initial tests.  It took me a  
couple of hours to track down the problem, and I spent a few more  
making sure I'd really fixed it.

Thanks is due to Mark Stock for creating the killer test scene and  
pointing out the error to me on the radiance-dev list over the  
weekend.  Mark has been busy creating a new benchmark for Radiance,  
and will no doubt make an announcement to radiance-general when he  
feels it is ready for prime time.  This of course requires that the  
new version of Radiance be ready for prime time as well...

I appreciate your patience in working out these difficulties.  There  
were a great many changes in the latest release, and I'm not  
surprised to find one or two glitches.  I hope this is the last of  
the serious ones requiring a patch release.  I expect Peter A-B will  
update radiance-online shortly.

-Greg