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To use the OpenGL versions of the graphical display sinks, you must ensurethat you have Python wrappers for OpenGL installed and are using a versionof wxPython that supports it. Then you must enable this mode by creating orediting an entry in the GNU Radio preferences file at:~/.gnuradio/config.conf[wxgui]style=glfft_rate=30waterfall_rate=30scope_rate=30number_rate=5const_rate=5const_size=2048>>>The style parameter accepts 'nongl', 'gl', and 'auto', and defaults to 'auto'.'nongl' forces the use of the non-GL (current) sinks.'gl' forces the use of the new GL based sinks, and will raise an exception if theappropriate GL support does not exist.'auto' currently equates to 'nongl'; however, in release 3.2, this will change touse GL if possible and if not, fallback to the non-GL versions.>>>The *_rate parameter sets the frame rate for various gl sinks.>>>The const_size parameter sets the number of constellation points per frame.