[vdr] Re: Re: vdr suggestions & osd colour oddity (Chris Elsworth) (Stefan Lucke)

CR oauk32v02 at sneakemail.com
Tue Aug 8 03:56:51 CEST 2006


Hi,

> > > Can you take a look at:
> > >
> > > http://www.flickr.com/photos/16371732@N00
>
> @CR, I've seen this but I don't know whats the problem with your setup or
> why our osd drawing is wrong in combination with nvidia cards.
> At which color depth is your X server running ?

Stefan, I am running at "24 bpp", 800x600.  Can you shed some light on how
softdevice does it's alpha blending?  I assume the decoded video frame is
in non-RGB color space and from what I read about VDR's OSD that is in
RGB, right?

So, does softdevice do the RGB-->YUV for the OSD and then alpha-blend that
into the video frame?

Supposedly using Cairo/XRender, alpha-blending can be done by the video
card hardware, I wonder how hard it would be to modify softdevice for
this.

CR.



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