Hi Andre',

What's your definition for current vertical sync count?

I assume it starts incrementing when the current output display mode was 
configured by the display drivers or DFB.  Thus it is reset to zero each time 
the current output display mode is reconfigured by the display drivers or DFB.  
I also assume it will simply wrap on overflow (only way to determine is 
tracking the previous value).

This is important to understand for other system drivers that will require 
different implementations of IDirectFBScreen::GetVSyncCount.

Thanks,
Timothy

--

Timothy Strelchun
CE Software Engineering
Digital Home Group
Intel Corporation

The views expressed above are my own and not those of Intel 

>-----Original Message-----
>From: directfb-dev-boun...@directfb.org 
>[mailto:directfb-dev-boun...@directfb.org] On Behalf Of Andre DRASZIK
>Sent: Friday, January 29, 2010 4:01 AM
>To: directfb-dev
>Subject: [directfb-dev] screen related patches
>
>Hi,
>
>attached are two patches - 
>
>1) fixes incorrect patching of the frequency for NTSC/PAL-60 
>standards (they are defined as 59.94Hz not 60Hz, this is simply wrong)
>
>2) I would like to have an API to retrieve the current VSync 
>count - attached is an implementation for the fbdev system.
>
>
>Cheers,
>Andre'
>
>
_______________________________________________
directfb-dev mailing list
directfb-dev@directfb.org
http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev

Reply via email to