Is opengl with Qt on i.MX6Q is slow?

[abin]

Hi all,

I am new to embedded with Qt.

I have a Qml application, in which I am trying is to grab whenever a screen change occurs and this is time critical.

I tried using Qml grab function as well as QQuickRenderControl grab function.

Both on i.MX6Q device takes almost 2 seconds. While on PC it takes only ~50 ms.

The screen resolution which I display my screen is 1920x1080.

Board is Sabre i.MX6Q with Yocto krogoth.

It seems like opengl is slow than expected on a sabre board. 

I would like to know if there is any way to grab the screen in a faster method, say in milli seconds.

Thanks in advance!

Abin.

[igorpadykov]

Hi Abin

one can try NXP Demo Images and use sect.8.4 Qt 5 attached Linux Guide.

https://www.nxp.com/webapp/Download?colCode=L4.1.15_2.0.0_MX6QDLSOLO&appType=license&location=null 

Best regards
igor
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