[Octave-bug-tracker] [bug #46417] GL2PS info: OpenGL feedback buffer overflow when printing

[Pantxo Diribarne]

Follow-up Comment #9, bug #46417 (project octave):

@Rik: yes both :-). The error message should be changed and I also obtain a
white image but heavier (closer to the expected result).

Try 

pcolor (rand (200));
print try.eps


and open the eps in an editor. You'll see that the prolog has been written 3
times: we get 2 overflows before the buffer is sufficiently large. If you
delete the 2 superfluous prologs (sections starting with "%!PS-Adobe-3.0
EPSF-3.0") and save you'll get a valid eps.

The issue is that each time we retry to print after increasing the buffer
size, we use the same stream which is thus corrupted. I don't know how to fix
this without changing the interface to gl2ps::rend which expect *the caller*
(e.g. __osmesa_print__)) to provide the stream as argument.

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