[Mesa-dev] [status][help]pipe-video on Loongson3A(mipsel) platform with r600

Alex Deucher alexdeucher at gmail.com
Thu Aug 4 07:45:42 PDT 2011

On Thu, Aug 4, 2011 at 10:26 AM, Christian König
<deathsimple at vodafone.de> wrote:
> Am Donnerstag, den 04.08.2011, 13:41 +0800 schrieb fykcee1 at gmail.com:
>> I guess that may be related with driver or DRM stack, after playback,
>> my desktop corrupts
>> http://dev.lemote.com/files/upload/software/temp/newmobcal1920-desktop-corrupt.png
>> (Similar with "-vc ffmpeg12vdpau -vo vdpau).
> I've seen something very similar at the very beginning of pipe-video
> development, back then it was related to some invalid offset
> calculations inside the kernel module, but that was fixed long ago.

Might try a newer kernel.

> What we see here is definitely some corruption of vram wich isn't
> related to video playback all together, maybe a piglit run could help
> narrowing down the problem a bit.
>> > I don't know how close to rv670 rs780 is, but I have artifact issues with my
>> > rv670 that don't show with my rv790.
> Not very, if I remember correctly rs780 is an igp chipset with r7xx
> instruction set directly wired to the motherboard, while rv670 is an
> "normal" PCIe card with r6xx instruction set. I was able to narrow down
> your problems with the rv670 to somewhere in the instruction set
> compiler, so I don't think that these two bugs are related to each
> other.

RS780 actually has an r6xx-based (rv610) 3d core.  RS880 is also r6xx
(rv620) based.

>> > If you can get it to display I would interested what -
>> >
>> > http://www.andyqos.ukfsn.org/Pendulum.mpg
>> No, this renders a corrupted playback
>> http://dev.lemote.com/files/upload/software/temp/Pendulum-playback.png,
>> but doesn't cause my desktop corruption.
> I would bet that it has something todo with the resolution/ maximum
> texture size. Try the tex3d-maxsize and fbo-maxsize tests in piglit, and
> see what the outcome of this is.
> Christian.
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