On Wed, May 18, 2016 at 6:20 PM, Dan Torop <d...@pnym.net> wrote:
> From here a bisect suggests 
> https://github.com/darktable-org/darktable/commit/a083e4c0f9ffc0423613f3a75e5e3457aa11430c
>  as the troublemaking commit.
Not surprising. Thanks for bisecting it though.
(but does it still happen with the next commit
https://github.com/darktable-org/darktable/commit/5590478c7bede4061ab06b013d8d227135d08005
i guess it does)

> Fiddling with color balance seems a good way to cause this. I've also seen it 
> when fiddling with white balance.

>The preview in the navigation panel shows correct color, while the full image 
>view shows the weird colors.
Yep, because preview is demosaiced way before any pipe runs on it.

> I can see this when the view is "fit to screen" or 100%.

>In the later case, the image looks suspiciously like a CFA problem.See 
>https://i.imgur.com/NG4G1y6.jpg.
It definitely is.
Either i forgot to change something to use  piece->pipe->xtrans
instead of xtrans field in  dt_image_t,
or missed some codepath that leads to it being set to wrong values.

>
> This is with OpenCL disabled and an X-Trans image. Will keep looking into 
> this.
No opencl here, and so far i have not seen this on bayer images.

> Dan
Roman.

> Ulrich Pegelow <ulrich.pege...@tongareva.de> writes:
>
>> Am 17.05.2016 um 20:21 schrieb Roman Lebedev:
>>> On Tue, May 17, 2016 at 9:13 PM, Ulrich Pegelow
>>> <ulrich.pege...@tongareva.de> wrote:
>>>> Hi,
>>>>
>>>> I can confirm your issue. You are running with OpenCL enabled? It looks 
>>>> like
>>>
>>>> I have introduced an issue when porting xtrans demosaicing to OpenCL.
>>>
>>> Are you really sure?
>>
>> No, not sure. You are probably right, the issue has been introduced
>> lately. If I go back in time a few days (commit
>> 1b955380447ac717674ce05f3e9c6e6f0a3b8cc6) all seems good.
>>
>> Unfortunately I cannot bisect as my gcc 4.8.3 has issues compiling
>> in-between commits.
>>
>> Maybe you can try to do that. At least here the problem can be quickly
>> reproduced when quickly wheel-scrolling a few times over the exposure
>> slider in the exposure module.
>>
>> Best wishes
>>
>> Ulrich
>>
>>
>>> I'm somewhat expecting this to be due to
>>> https://github.com/darktable-org/darktable/commit/a083e4c0f9ffc0423613f3a75e5e3457aa11430c
>>> and
>>> https://github.com/darktable-org/darktable/commit/5590478c7bede4061ab06b013d8d227135d08005
>>>
>>> but i do not understand what is missing...
>>>
>>> FWIW i was able to reproduce the issue without opencl, and only rarely,
>>> when loading image in darkroom and just only changing colorzones once.
>>>
>>>> What I
>>>> see are spurious color distortions (typically towards magenta) when quickly
>>>> changing some slider value like the exposure compensation. At the moment I
>>>> cannot really say why we have these intermittent errors. This needs some in
>>>> depth investigations.
>>>>
>>>> Ulrich
>>> Roman.
>>
>> ___________________________________________________________________________
>> darktable developer mailing list
>> to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
>
___________________________________________________________________________
darktable developer mailing list
to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org

Reply via email to