[Accessibility] Renderring image using QT + eglfs and OpenGL

Ambika ambika at iwavesystems.com
Sat Nov 26 05:56:36 CET 2016


I'm running the application 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%.

When using OpenGL:
i. Frame rate is around 56fps with 800 * 480 1280 * 720 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.
Thanks in advance.

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