[mythtvnz] VDPAU tearing - disable composite script?

[Curtis Walker]

Thanks - it's good to read there's a fairly straight forward
workaround. Unfortunately Gnome 3 shell uses a different composite
manager, but I will do some research and see if a similar fix could be
applied.

Cheers!

On 22/10/2011, Brett <mythicalbeast at slingshot.co.nz> wrote:
>> The tearing problem affects the top few inches of the picture only,
>> and manifests as slight distortion of the picture, and only occurs
>> during fast motion on 1080i feeds (such as the rugby). The generally
>> accepted workaround is to disable compositiing in xorg.conf
>> (http://www.mythtv.org/wiki/VDPAU).
>>
>> However, as I use my mythbox - which is both the FE and BE - as my
>> main PC, it's a pain to disable compositing (and restart X) just to
>> watch HDTV without tearing, since I can't then run gnome 3 shell
>> without re-enabling compositing and restarting X.
>>
>> Any idea of a shortcut or suggestions for a script to automagically:
>>
>> 1) disable compositing & restart X
>> 2) launch mythfrontend
>> 3) on quitting out of mythfrontend, renable compositing and restart X
>>
>> Any other workarounds?
>>
>
>>
> nVidia composite & VDPAU don't work well together..
>
> I recently made up a mythtv demo box from old bits with 11.04 Ubuntu so
> unity/compiz..
>
> The VDPAU playback is screwed up by composite redirection.
> Composite uses blitter which (apparently) does not work with VDPAU
> overlays.
> nVidia says it is Xorg who say it is compiz who blame nVidia. Or
> something as silly.
>
> Using compiz composite setting manager ccsm:
> composite tab, tick un-redirect full screen
> workarounds tab, tick legacy full screen support.
>
> This worked well for 11.04 unity 9400GT VDPAU MythTV 0.24+fixes driver
> 270.xxx.x
>
> Interestingly qvdpautest does not reflect VDPAU-composite/compiz
> interaction.
>
>
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