Re: [Discuss-gnuradio] New OpenGL-based FFT, Waterfall, and Scope displays in trunk

[Stefan Bruens]

On Monday 18 August 2008 18:04:23 Johnathan Corgan wrote:
> On Mon, Aug 18, 2008 at 4:57 AM, Firas A. <address@hidden> wrote:
> > 2) I think screen refresh (drawing times) is too high (on my system) that
> > leads to flickering.
>
> You can lower the frame rate from the default of 30 by adding the
> following line(s) to your config.conf:
>
> [wxgui]
> fft_rate=15 (...or whatever frame rate you want)
>
> This will work with either the old or the new sinks.

Unfortunately, this is not the case - waterfallsink_gl.py uses 
DEFAULT_FRAME_RATE, which is set waterfall_window.py to the fixed value of 30.

There is another problem with the frame rate, if it is decreased often enough, 
old_framerate*0.75 will yield 0, and this leads to various problems.

Stefan
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