BeOS and nVidia

[Tony Castley]

If you could let me know when you have it working and checked in, I 
will be very pleased.
Will your fix work for all platforms (eg Win32 and BeOS)

Thanks 
Tony Castley

> On Mon, 08 Apr 2002 "Tony Castley" <tony at castley.net> wrote:
> >
> >This is a known BeOS problem.  I am looking into the problem now.
> >It appears that the BeOS nVidia driver has some restrictions on the 
> >usage of overlays and I need to figure out how to handle them.
> >
> >Tony
> >
> >> No idea if the vlc team knows about this, but with any nVidia card 
> >> I've 
> >> tried with 0.3.0 (and tonight's CVS) does not work properly with 
> >> vlc's 
> >> overlay.  I get diagonal lines across my screen that completely 
> >> distort 
> >> the video.  Others have this problem as well.  AFAIK this only 
> >> happens 
> >> under BeOS, as overlay under Linux seems to work fine with my 
> > > card.
> >> 
> >> Sorry if this has been reported already.
> >> 
> >> Andrew Gildehaus
> >>
> 
> I've got a similar problem on Win32, so I don't think it is a BeOS 
> problem ;-)
> 
> As you said, the graphics card imposes certain restrictions on the 
> picture buffers. To be more specific, the picture buffers you create 
have a stride (or pitch) which is different from their width.
> 
> It shouldn't be a problem except that the mpeg video decoder 
> currently expects the width to be equal to the stride. I'm in the 
process of fixing this, I've almost finished except that I've got a 
segfault during the motion compensation step of B pictures, so I still 
need to fix this.
> 
> Linux doesn't show this problem because Xv picture buffers are always 
> created in system memory and then transfered by X itself to the video 
memory. As they are created in system memory the video hardware 
restrictions usually don't apply.
> 
> --
> Gildas
> 
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