How To Reduce/Eliminate Horizontal Tearing

[Alex Deucher]

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.

Alex