[Radiance-dev] mingw rtcontrib (under windows)

[Francesco Anselmo]

Ladies & Gentlemen,

I've hit this little problem with the mingw radiance binaries I've
compiled last october.
If I run this command to produce separate pictures for each light
source:

vwrays -ff -x 1024 -y 1024 -vf v3.vf | rtcontrib -ffc -x 1024 -y 1024 \
-ld- @render.opt -o c_%s.pic -m solar -m skyglow -m spot testSky.oct

I get the following error:
-----
bin/rtrace: consistency - zero ray direction in localhit

This application has requested the Runtime to terminate it in an unusual
way.
Please contact the application's support team for more information. 
rtcontrib: fatal - rtrace process died
-----

If, instead of using floating point values, I use ASCII, like this:

vwrays -fa -x 1024 -y 1024 -vf v3.vf | rtcontrib -fac -x 1024 -y 1024 \
-ld- @render.opt -o c_%s.pic -m solar -m skyglow -m spot testSky.oct

everything works smoothly.

Does anybody have any clue about it? I suspect it is directly related to
the mingw gcc, but it may be something else, you never know what happens
in Redmond ...

Grazie!

Francesco