[vtk-developers] non-graphical tests?

[tom fogal]

Is there any way I can instruct ctest to run only those tests that
do not need a DISPLAY set?  I want to be able to use the machine to
read/write code while some tests run; the windows popping up are
aggravating.  Better, can I just force VTK to render into an FBO
without creating a window?

I can, of course, just unset DISPLAY, but then I cannot distinguish
between code that is broken and tests that fail simply because they
need OpenGL.

Thanks,

-tom