[Mesa-dev] Random results in piglit spec/!OpenGL 1.1/read-front on r600g

[Martin Andersson]

On Fri, Jun 7, 2013 at 8:58 AM, Martin Andersson <g02maran at gmail.com> wrote:
> On Fri, Jun 7, 2013 at 12:37 AM, Marek Olšák <maraeo at gmail.com> wrote:
>> There are bugs in both piglit and DRI2. I haven't looked into the
>> issue, but Paul Berry seems to be working on it.
>>
>> See:
>> http://lists.freedesktop.org/archives/piglit/2013-May/005880.html
>> http://lists.freedesktop.org/archives/mesa-dev/2013-May/039985.html
>>
>> Marek
>>
>
> ok, it is good to know that it is being worked on, thanks
>
> //Martin
>
>> On Fri, Jun 7, 2013 at 12:04 AM, Martin Andersson <g02maran at gmail.com> wrote:
>>> I get random results when I run the spec/!OpenGL 1.1/read-front test.
>>> Sometimes it passes and sometimes it failes, it mostly fails though.
>>> When it fails the observed values are random. I have an AMD 6950,
>>> running mesa git ce67fb4715e0c2fab01de33da475ef4705622020 and kernel
>>> 3.10-rc4.
>>>
>>> If I insert a delay before the piglit_swap_buffers call in the test
>>> (read-front.c) it always passes. It does not matter where I put the
>>> delay in the piglit_dispay function, as long as it is before the
>>> piglit_swap_buffers call. So it seems to be a race between the
>>> swap_buffers_call and some earlier call (some piglit initialization
>>> perhaps?)
>>>
>>> Does anyone know what could be wrong or how I could debug it further?
>>>
>>> //Martin
>>> _______________________________________________
>>> mesa-dev mailing list
>>> mesa-dev at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/mesa-dev

This issue was fixed by
http://cgit.freedesktop.org/piglit/commit/?id=4c1d83cb4cf202dd7375593c830fd78db04ff14b

//Martin