[Interest] Qt5/OMAP4/EGLFS: Strange animation behaviour

Stephan Kanthak stylon at gmx.de
Wed Nov 21 08:51:37 CET 2012

Hi Prabindh,

I and probably many others very much appreciate the effort that TI does 
not just release graphics drivers blindly, but also tries to publish 
documentation and builds a community around it. I'm also aware of the 
DRM drivers for Linaro/Ubuntu and I know the Android releases (in 
despiration to find something useful, I inspected them all :-) ). But 
you must also acknowledge that since you dropped support for OMAP4 from 
the SDK the set of available drivers leave the gap of Linux FB support 
(FB, DirectFB, Wayland, Qt). Esp. if you need to build fast booting 
systems (e.g. a requirement of <3 seconds poweron-to-app for my project) 
there's no way around it. Maybe you can gently push those people to also 
release drivers for FB mode if that solves the problems? :-)

About the VSYNC support on OMAP4: the thread at 
https://groups.google.com/forum/#!topic/pandaboard/Ig7VrOU_zW8 tells me 
that it's even not straight-forward to get it working on X11 and that 
there are other people bumping into similar issues. I personally also 
don't want all the hassle with starting an XServer and a window manager 
just to set up my display output, esp. as EGL has been defined to avoid 
the need for a complete display/window subsystem.


On 11/21/2012 04:28 AM, Sundareson, Prabindh wrote:
> I am not aware of VSYNC related issues in Beagleboard/bone platforms. If there are, please point a reference for me to attack. For OMAP4/Pandaboard, it is recommended to check on Pandaboard.org forums. As I mentioned earlier in the thread, I stopped supporting plain fb on OMAP4/Panda more than a year ago, this has moved onto DRM drivers in Ubuntu flavour.
>>> other Qt users who are being burnt by these same issues
> There you scared me :)
>>> and logged accordingly.

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