[yocto] Renderring image using QT + eglfs and OpenGL

[Ambika]

Thanks for the guide and response.

Can you let know about how can I enable hardware acceleration in my application in yocto dizzy?

Regards,
Ambika


From: Khem Raj 
Sent: Saturday, November 26, 2016 9:39 AM
To: Ambika 
Cc: yocto at yoctoproject.org 
Subject: Re: [yocto] Renderring image using QT + eglfs and OpenGL


  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
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