Re: [darktable-user] darktable + OpenCL

2020-11-07 Thread Remco Viëtor
On samedi 7 novembre 2020 21:29:13 CET Michael Rasmussen wrote:
> On Sat, 7 Nov 2020 19:46:24 +0100
> 
> KOVÁCS István  wrote:
> > It has been reported that a new driver, compatible with kernel 5.9, is
> > available.
> > https://discuss.pixls.us/t/linux-and-darktable/21113/6
> 
> This is wrong since the kernel will not load the proprietary Nvidia
> blobs as the are currently. My Nvidia version is 450.80 and the opencl
> libraries as rejected to be loaded by the kernel. The opencl library
> will not be able to be loaded until Nvidia fixes it and until this is
> done your only option is to revert to kernel 5.8.

But, according to the linked thread on pixlus, the newest NVidia driver is 
version *455.38* ...




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Re: [darktable-user] darktable + OpenCL

2020-11-07 Thread Michael Rasmussen
On Sat, 7 Nov 2020 19:46:24 +0100
KOVÁCS István  wrote:

> 
> It has been reported that a new driver, compatible with kernel 5.9, is
> available.
> https://discuss.pixls.us/t/linux-and-darktable/21113/6

This is wrong since the kernel will not load the proprietary Nvidia
blobs as the are currently. My Nvidia version is 450.80 and the opencl
libraries as rejected to be loaded by the kernel. The opencl library
will not be able to be loaded until Nvidia fixes it and until this is
done your only option is to revert to kernel 5.8.

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Re: [darktable-user] Getting machine JPG colours in RAW editing

2020-11-07 Thread Terry Pinfold
Recently I was teaching a group of students to use DT 3.0. We opened the
same image using base curve to get the initial starting point, we then
opened the image with no base curve  and just did our own tone curve, and
finally we used Filmic V4 and adjusted the white and black exposure
sliders. Every student thought Filmic gave the best result and was easy to
use at this basic level. For me Filmic V4 is giving pleasing results with
colour saturation where I found V3 too subdued.

On Sun, 8 Nov 2020 at 06:04, Timur Irikovich Davletshin <
timur.davlets...@gmail.com> wrote:

> Hi, Germano!
>
> You're not gonna get precise color reproduction even if your camera has
> full support in dt (or you made custom profiling). Default basecurve
> module behavior has been changed since 3.0 release. Try changing color
> reproduction to 'none' instead of 'luminance'. This is the only way
> profiles work for me. Why it has been changed is another question. We
> discussed it already couple times. I looks like no one cares about
> matching in camera JPEGs but for some unknown reason dt still defaults
> to base curve module... which is profiled against in camera JPEGs!
>
> :)
>
> Timur.
>
> On Wed, 2020-11-04 at 23:35 +0100, Germano Massullo wrote:
> > Good day, I have shoot the following photo in JPEG+RAW and I would
> > need your help in reproducing the colours of the camera JPEG in
> > dartkable RAW editing.
> > This is a Nikon Z6 JPEG
> > https://germano.fedorapeople.org/canc/pantheon/original_z6_JPG.JPG
> > here instead the result of my elaboration of the RAW file
> > https://germano.fedorapeople.org/canc/pantheon/darktable_edited_raw.jpg
> > This is the XMP file
> > https://germano.fedorapeople.org/canc/pantheon/DSC_1075_05.NEF.xmp
> > I cannot manage to achieve the same colours, playing with the colour
> > balance did not help because it turned too much "reddish" the whole
> > picture. Any idea?
> > Thank you for your time
> >
> > _
> > ___ darktable user mailing list to unsubscribe send a mail to
> > darktable-user+unsubscr...@lists.darktable.org
>
>
> 
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Re: [darktable-user] Getting machine JPG colours in RAW editing

2020-11-07 Thread Timur Irikovich Davletshin
Hi, Germano!

You're not gonna get precise color reproduction even if your camera has
full support in dt (or you made custom profiling). Default basecurve
module behavior has been changed since 3.0 release. Try changing color
reproduction to 'none' instead of 'luminance'. This is the only way
profiles work for me. Why it has been changed is another question. We
discussed it already couple times. I looks like no one cares about
matching in camera JPEGs but for some unknown reason dt still defaults
to base curve module... which is profiled against in camera JPEGs!

:)

Timur.

On Wed, 2020-11-04 at 23:35 +0100, Germano Massullo wrote:
> Good day, I have shoot the following photo in JPEG+RAW and I would
> need your help in reproducing the colours of the camera JPEG in
> dartkable RAW editing.
> This is a Nikon Z6 JPEG 
> https://germano.fedorapeople.org/canc/pantheon/original_z6_JPG.JPG
> here instead the result of my elaboration of the RAW file  
> https://germano.fedorapeople.org/canc/pantheon/darktable_edited_raw.jpg
> This is the XMP file   
> https://germano.fedorapeople.org/canc/pantheon/DSC_1075_05.NEF.xmp
> I cannot manage to achieve the same colours, playing with the colour
> balance did not help because it turned too much "reddish" the whole
> picture. Any idea?
> Thank you for your time
> 
> _
> ___ darktable user mailing list to unsubscribe send a mail to 
> darktable-user+unsubscr...@lists.darktable.org 


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Re: [darktable-user] darktable + OpenCL

2020-11-07 Thread KOVÁCS István
On Sat, 7 Nov 2020 at 12:34, Michael Rasmussen  wrote:
> Until Nvidia releases a solution your only option is to use the 5.8
> kernel

It has been reported that a new driver, compatible with kernel 5.9, is
available.
https://discuss.pixls.us/t/linux-and-darktable/21113/6

Kofa

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Re: [darktable-user] Getting machine JPG colours in RAW editing

2020-11-07 Thread Kees Stravers

What version of Darktable are you using?

In my experience, Darktable 2.6.x gets much closer to the Nikon colors 
in its defaults than 3.x does.


Kees


Germano Massullo schreef op 2020-11-04 23:35:

Good day, I have shoot the following photo in JPEG+RAW and I would
need your help in reproducing the colours of the camera JPEG in
dartkable RAW editing.
This is a Nikon Z6 JPEG
https://germano.fedorapeople.org/canc/pantheon/original_z6_JPG.JPG

here instead the result of my elaboration of the RAW file
https://germano.fedorapeople.org/canc/pantheon/darktable_edited_raw.jpg


This is the XMP file
https://germano.fedorapeople.org/canc/pantheon/DSC_1075_05.NEF.xmp

I cannot manage to achieve the same colours, playing with the colour
balance did not help because it turned too much "reddish" the whole
picture. Any idea?

Thank you for your time

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darktable-user+unsubscr...@lists.darktable.org


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Re: [darktable-user] darktable + OpenCL

2020-11-07 Thread Michael Rasmussen
On Sat, 7 Nov 2020 02:06:34 +0100
ternaryd  wrote:

> Hi,
> 
> OpenCL worked just fine with darktable, until
> this morning, when I updated my debian sid.
> darktable-cltest writes:
> 
You probably forgot that in kernel 5.9 there is no support for the
proprietary part of the Nvidia driver due to licensing issues so the
dkms build disables, among other parts, the support for opencl. Nvidia
has announce a solution ultimo November.

Until Nvidia releases a solution your only option is to use the 5.8
kernel

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Re: [darktable-user] darktable + OpenCL

2020-11-07 Thread Remco Viëtor
On samedi 7 novembre 2020 02:06:34 CET ternaryd wrote:
> Hi,
> 
> OpenCL worked just fine with darktable, until
> this morning, when I updated my debian sid.
> darktable-cltest writes:
> 
> - could not find opencl runtime library
>   'libOpenCL'
> - could not find opencl runtime library
>   'libOpenCL.so'
> - found opencl runtime library 'libOpenCL.so.1'
> - opencl library 'libOpenCL.so.1' found on your
>   system and loaded
> - could not get platforms: -1001
> - FINALLY: opencl is NOT AVAILABLE on this
>   system.
> 
(...)
> 
> Is there anything else I could look out for?
> 
> Thanks,
Is the (proprietary) NVidia driver used (lsmod)?

Without it, no openCL (and you have
>- could not get platforms: -1001
listed in your output)

Remco





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