Re: [PATCHv2] [media] rcar-vin: add Renesas R-Car VIN driver

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On 2016-03-11 22:04:17 +0100, Hans Verkuil wrote:
> On 03/11/2016 09:55 PM, Niklas Söderlund wrote:
> > On 2016-03-11 12:16:30 +0100, Hans Verkuil wrote:
> >> On 03/11/2016 12:03 PM, Niklas Söderlund wrote:
> >>> Hi Hans,
> >>>
> >>> On 2016-03-11 09:26:48 +0100, Hans Verkuil wrote:
> >>>> Hi Niklas,
> >>>>
> >>>> On 02/29/2016 10:52 AM, Hans Verkuil wrote:
> >>>>> Hi Niklas,
> >>>>>
> >>>>> Thanks for your patch! Much appreciated.
> >>>>>
> >>>>> I have more comments for the v2, but nothing really big :-)
> >>>>>
> >>>>
> >>>> Just checking, you are working on a v3, right? I'd really like to get this in
> >>>> for kernel 4.7.
> >>>
> >>> Yes I had to switch focus for a bit but now I'm back working on this 
> >>> again today.
> >>>
> >>> I have some trouble getting NV16 to work. I can't get it to work using 
> >>> soc_camera driver either, or more accurate I get the same output broken 
> >>> rendering in qv4l2. What would you say is better drop NV16 support form 
> >>> the driver or keep it as is since it is compatible with the soc_camera 
> >>> drivers implementation? I would like to keep it in the driver for now 
> >>> since it at least works as good as in soc_camera.
> >>
> >> I would have the NV16 support as a separate patch so we can decide on this
> >> later.
> >>
> >> I don't really like having to support a broken format.
> >>
> >> Do you know in what way the format is broken?
> > 
> > Turns out it was my fault all along for assuming qv4l2 could render NV16 
> > out-of-the-box. If one decodes the format correctly it works fine both 
> > with this driver and the one in soc_camera.
> 
> Is your qv4l2 compiled with openGL support? (See Help:About) The NV16 format
> is supported with openGL rendering, but not with software rendering. That's
> probably the reason why it wasn't reproduced correctly.

Ahh I see. You are correct I did compile qv4l2 without OpenGL support.  
Thanks for teaching me why it did not work for me :-)

-- 
Regards,
Niklas Söderlund
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