The methods of my Gtk::Gl::DrawingArea that modify the gl state machine
need to be called between:
Glib::RefPtr<Gdk::GL::Drawable> gldrawable = get_gl_drawable()
if (!gldrawable->gl_begin(get_gl_Context())
return false
call_my_gl_state_modifying_method()
gldrawable->gl_end()
Is there some easy (low overhead) way to check for this from within my
gl-modifying methods, so I don't accidentally call glClear() or whatever
without an active drawable context?
Thanks,
...Eric
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