Offscreen rendering with OSMesa and gl2ps

[Andreas Weber]

Dear maintainers,

today I played with OSMesa and created a gl_print function which let you
print a figure without FLTK or even a X Display.

I've tested this only on Debian 8.0 (jessie) so be prepared to tweak
some libs and paths.

For Debian 8.0:

apt-get install libosmesa6-dev
git clone https://github.com/octave-de/octave-gl-print.git
cd octave-gl-print
./bootstrap
./configure
make check

have a look at check1.svg!

@Carnë: I would like to move this to octave-forge as mercurial repo
until it's complete and stable and merge it afterwards to core if all
are fine with this.

-- Andy