[Octave-bug-tracker] [bug #43907] OpenGL render code called even when gnuplot is graphics_toolkit

[Rik]

Follow-up Comment #13, bug #43907 (project octave):

The issue is that Freetype is not used for rendering text with gnuplot, it is
an OpenGL feature.  Ergo, Octave shouldn't be calling OpenGL code when the
toolkit is gnuplot.  Certainly the programmer using gnuplot doesn't care one
whit about warnings from ft_render because the empty set symbol is drawn just
fine with gnuplot, despite the superfluous warning.  This is because Matlab
and gnuplot use the Symbol font, rather than the specified font (like Arial),
to render mathematical symbols.  And the Symbol font does have an empty set
representation.

Tex is the default interpreter for text() objects.

I would file a different issue report for changing the way that
graphics_toolkit() works.

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