Use OpenGL line smoothing when multisample is not available. * gl-render.cc (opengl_renderer::init_gl_context): Check whether multisample is enabled and use GL_LINE_SMOOTH if it is not. * gl-render.cc (opengl_renderer::setup_opengl_transformation). Remove call to disable GL_LINE_SMOOTH. * gl-render.cc (opengl_renderer::draw_axes_children): Remove call to enable GL_LINE_SMOOTH. * gl-render.cc (opengl_renderer::draw_axes): Disable GL_LINE_SMOOTH for axes lines, but re-enable for axes children.

#include <octave/oct.h>

DEFUN_DLD (addtwomatrices, args, , "Add A to B")
{
  int nargin = args.length ();

  if (nargin != 2)
    print_usage ();
  else
    {
      NDArray A = args(0).array_value ();
      NDArray B = args(1).array_value ();
      if (! error_state)
        return octave_value (A + B);
    }

  return octave_value_list ();
}