[Libva] Image corruption with overlay on Up board

[Yann Dirson]

Oh, you're right, I ought to check my facts better, it is 0.7.0.
Just updated the yocto recipes for 0.7.2, and I get the same symptom.

As for the symptom itself, the description was not quite correct
either: the short horizontal lines
are not black, when the subpicture is displayed they are of the color
of the underlying image  (as
if the subpicture had some fully-transparent lines), and when removing
the subpicture they are of the
color of the subpicture (much more visible when something was drawn in
the subpicture other than
the background)

Here is what I'm doing:
* identify subpicture format for bgra in what vaQuerySubpictureFormats returns
* vaCreateImage with that format and the size of my overlay
* vaMapBuffer of the image's buf, and vaCreateSubpicture
* vaAssociateSubpicture with all the 3 surfaces I'm using for decoding
* redraw in the mapped buffer (fill with a background with an alpha)
between vaEndPicture and vaPutSurface
* to remove the overlay, I just memset the buffer with 0


2016-09-13 10:10 GMT+02:00 Xiang, Haihao <haihao.xiang at intel.com>:
>
>
> How did you add the rectangle overlay?
>
> BTW did you build libva-x11 from the latest source code? We don't have
> libva-x11 0.7.1
>
> Thanks
> Haihao
>
>
>> Hello,
>>
>> It is libva-x11 0.7.1
>>
>> Thanks
>>
>> 2016-09-13 4:23 GMT+02:00 Xiang, Haihao <haihao.xiang at intel.com>:
>> >
>> > Hi Yann,
>> >
>> > Are you using libva? what is v0.7.1 / v0.7.2?
>> >
>> > Thanks
>> > Haihao
>> >
>> > > I have a decoding app which successfully decodes an h.264 stream
>> > > on
>> > > several platforms,
>> > > both with i965 and amdgpu backends. If I add a simple rectangle
>> > > overlay on one part of the
>> > > stream, while it's working on some i965 platforms, on the UP
>> > > board we
>> > > can see a good number
>> > > of horizontal short black line artifacts on the overlay area
>> > > while
>> > > it's displayed, and a very large
>> > > quantity of them once the overlay is removed.  The artifacts
>> > > progressively with each frame,
>> > > as long as no overlay is modified.
>> > >
>> > > Is this a problem others have seen ?  Could it come from a wrong
>> > > usage
>> > > of overlays, which only by
>> > > just luck works elsewhere ?
>> > >
>> > > This is using v0.7.1 (0.7.2 changes do not mention any fix of the
>> > > sort).
>> > >
>>
>>
>>



-- 
Yann Dirson <yann at blade-group.com>
Blade -- 90 avenue des Ternes, 75017 Paris