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Re: [Discuss-gnuradio] Use of OpenGL in gr-qtgui

From: Josh Blum
Subject: Re: [Discuss-gnuradio] Use of OpenGL in gr-qtgui
Date: Sun, 27 Mar 2011 09:15:12 -0700
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110223 Lightning/1.0b2 Thunderbird/3.1.8

On 03/27/2011 07:27 AM, Marcus D. Leech wrote:
> On 03/27/2011 03:01 AM, Josh Blum wrote:
>> For me, the qtgui component seems to build without gl support (probably
>> because of an uninstalled dependency). This gives you scope, dft,
>> constellation, and 2d spectrogram.
>> The processor overhead seems to be lower than the wx widgets sinks. That
>> being said, there are some features missing that would add overhead,
>> like extra traces and triggering modes.
>> I believe there is also a 3d spectrogram if you build with gl support.
>> -Josh
> And while we're on the subject :-)
> It would be good to be able to control update rate from GRC, right now,
> it just uses the
>   default.
> Multiple-traces in "scope", and a "stripchart" mode would be good. 
> Actually without a multi-trace
>   strip-chart, I can't consider migrating my current apps to the Qt-GUI
> side.

Agreed. But who can we convince to implement these features. :-)

> How are multiple "tabs" (Notebook) supported from GRC on the Qt-GUI side?

Very similar to the notebook block w/ wx widgets. See the qtgui tab
widget block.


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