[mythtv] [mythtv-commits] Ticket #2649: Opengl video renderer

[Mark Kendall]

> > It's rendering at the final display res.
>
> Isn't that quite a bit of extra work rendering at that res, since the scaling
> should be virtually free?
>
> Isaac

Yes - a lot more work but the difference in quality of the output is
obvious (and you get full screen OSD if your display is letterboxed
etc). While color conversion is done in hardware, you'll get no
performance improvement using a smaller OSD texture anyway as the
conversion is computed for every displayed pixel. The workaround is to
render to a frame buffer object and then scale up - but that just adds
complexity (though probably faster).

At the end of the day it's an option - if you're showing standard def
at hidef resolutions and your GPU can keep up, set it in your display
profile.

Regards

Mark