How To Reduce/Eliminate Horizontal Tearing

[Nikos Chantziaras]

Alex Deucher wrote:
> On Sun, Dec 14, 2008 at 11:55 PM, Nikos Chantziaras <realnc at arcor.de> wrote:
>> Ross Vandegrift wrote:
>>> On Fri, Dec 12, 2008 at 12:00:17AM +0200, Nikos Chantziaras wrote:
>>>> Markus Strobl wrote:
>>>>> That's not my experience. I've tested most of the possible combinations:
>>>>> Intel, ATI+fglrx,
>>>>> ATI+Radeon and closed-source NVidia. Only Intel has the tearing issue.
>>>>> All the others play
>>>>> video, including HD-Video, perfectly.  BTW, my MediaPC has a cheap dual
>>>>> core Intel Core 2 @1.8 GHz
>>>>> and a $30 NVidia graphics card. It has no problems playing H.264 720p.
>>>>> The above is using XV, I don't use
>>>>> the OpenGL overlay as it had some issues.
>>>> ATI does not.  Only NVidia plays without tearing with Xv.
>>> mga does.  Just watched a few hours of shows on an mga G-series and
>>> mplayer, tearing doesn't exist.
>> Oops, sorry, you're right.  These days we tend to think that there's
>> only ATI, NVidia and a bit of Intel out there :)  I also never had
>> tearing my old Matrox.
> 
> Most cards with an overlay can pageflip the overlay so you generally
> don't see tearing.  It's really only a problem when you use the
> blitter or texture engine to render the video.

Seems like most cards don't have an overlay.  I mean modern cards.