[Libva] test/decode sample shows blank window

[Paul A. Steckler]

On my Linux Mint 17 laptop, I upgraded the X server and Intel video
driver, with no
change in the result. The Mint packages are usually the same as Ubuntu packages.

Perhaps it's relevant that the laptop has two video cards, a Radeon
and the Intel.

-- Paul

On Tue, Jan 13, 2015 at 9:01 PM, Xiang, Haihao <haihao.xiang at intel.com> wrote:
> On Sun, 2015-01-11 at 22:44 -0800, Paul A. Steckler wrote:
>> Yes, I mean the mpeg2vldemo program.
>>
>> In fact, I had the master branch checked out from
>> github.com/gbeauchesne/libva.git, which
>> appears to differ from the "official" repository.
>>
>> I checked out the repo at anongit.freedesktop.org/git/libva.When I run
>> mpeg2vldemo with that
>> code, it reports the VA API version as 0.37.0.
>>
>> And I get the same behavior as with the other code. But, yes, when
>> kill the cinnamon window
>> manager in Linux Mint, I see the image of what appears to be a baby!
>>
>> What causes this behavior?
>
> I don't know exactly the cause of this issue. Some possible reasons are:
> 1. libva driver handles a small drawable wrongly.
> 2. libva driver gets wrong parameters from X server.
> 3. X server swaps front/back buffer wrongly for a small drawable.
>
> If possible, could you give a try with the latest X server and
> xf86-video-intel ?
>
> Thanks
> Haihao
>
>
>>
>> -- Paul
>>
>>
>>
>>
>> On Sun, Jan 11, 2015 at 9:18 PM, Xiang, Haihao <haihao.xiang at intel.com> wrote:
>> >
>> > Hi Paul,
>> >
>> > Do you mean mpeg2vld in test/decode ? Can you reproduce this issue
>> > stably with the latest master branch in your side ? Could you give a try
>> > without window manager ?
>> >
>> > Thanks
>> > Haihao
>> >
>> >
>> >> I'm able to build libva and the test programs on my Linux Mint
>> >> laptop, which has an Intel GPU, which "lspci" identifies as "Intel
>> >> Corporation 3rd Gen Core processor Graphics Controller".
>> >>
>> >> I'm particularly interested in getting the test/decode sample to work.
>> >> When I run it, with an argument so that the the frame should be displayed,
>> >> I get an X window to appear, but it's blank.
>> >>
>> >> There is text output that shows calls to va_GetDriverName() and va_openDriver(),
>> >> both of which return 0 (success). The driver that's loaded is called
>> >> i965_drv_video.so.
>> >>
>> >> Is this a known issue? Can you suggest a way to debug it?
>> >>
>> >> -- Paul
>> >> _______________________________________________
>> >> Libva mailing list
>> >> Libva at lists.freedesktop.org
>> >> http://lists.freedesktop.org/mailman/listinfo/libva
>> >
>> >
>
>