[mythtv] [patch] turn off OpenGL vsync by default

[Hamish Moffatt]

On Fri, May 21, 2004 at 10:27:13PM -0400, Doug Larrick wrote:
> Edit settings.pro and uncomment the two lines after "OpenGL support for 
> vertical retrace sync" to enable.

Doug, I tried your GLX-sync patches and didn't find quite the result I
was expecting. It compiled OK though (I have latest CVS and enabled
OpenGL sync in settings.pro). 

I haven't been using A/V sync in the past. I'm running the nVIDIA 5336
drivers on a GF4 440MX card. I turned off deinterlacing, and turned on 
jitter reduction and experimental A/V sync. I'm outputting to the TV
in PAL mode (and my source is PAL too).

I found that the video output was just a bit odd; it felt like the frame
rate was really low. I'm not sure quite how to describe it. glxinfo
reports that I do have the GLX sync extension.

Without jitter reduction, it had no effect, as you said would be the
case. I didn't try the jitter reduction without A/V sync.

Theoretical question; I think that since I have an interlaced source,
and an interlaced output device (analog TV), I don't need deinterlacing
and video sync (as in the experimental A/V sync feature) should be all I
need to prevent jagged edges (mice teeth). Is that correct?

Hamish
-- 
Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>