[gl2ps] PDF production problems

[Micha Bieber]

Hallo Guy,

This looks like a premature call to gl2psEndViewport to me. At least,
your PDF seems to contain exactly one graphics state restore too much
(If you will fix this, replace the first single letter 'Q' after the
sequence "/GSa gs" in your example provided file by '%' with a _binary_
editor). The mentioned function is the only one in gl2ps, producing a
'Q' in this context.

The PDF version warnings are completely justified, because gl2ps
produces PDF 1.4 - should be no problem as long as no transparency has
been included. Transparency uses some PDF 1.4 features.

HIH
Micha  
--