[yocto] Renderring image using QT + eglfs and OpenGL

Khem Raj raj.khem at gmail.com
Fri Nov 25 20:09:13 PST 2016

> On Nov 25, 2016, at 2:00 AM, Ambika <ambika at iwavesystems.com> wrote:
> Hii,
> I'm running the application (yocto dizzy release) to display the sequence of the image using QT + eglfs as well as OpenGL, below are the observations.
> When using QT5 + eglfs:
> i. Frame rate is around 56fps with 800*480 resolution display.
> ii.Frame rate is around 23fps with 1280 *720 resolution display.
> iii.Frame rate is around 11fps with 1920*1080 resolution display.
> iv.CPU usage for above three cases is 99%.

it seems there is no h/w acceleration enabled here. You need to figure out why 

> When using OpenGL:
> i. Frame rate is around 56fps with 800480 1280720 and 1920*1080 resolutions.
> ii.CPU usage slightly increases with resolution from around 10% to 18%.
> Whats affecting Frame rate in QT5 and how can I increase the frame rate and improve CPU performance.
> I'm new to QT as well as image processing. Kindly let me know your thoughts on this to solve.

Its a question better suited for qt mailing lists. There are several optimizations that can affect this but you have to know
your load.

> Thanks in advance.
> Regards,
> Ambika
> -- 
> _______________________________________________
> yocto mailing list
> yocto at yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/yocto/attachments/20161125/04fa9065/attachment.html>

More information about the yocto mailing list