Re: [Development] Color Management support in Qt 5?

2013-11-13 Thread Kai-Uwe Behrmann
Am 10.11.2013 11:05, schrieb John Layt: On 9 November 2013 12:50, Olivier Goffart oliv...@woboq.com wrote: On Saturday 09 November 2013 03:02:18 Alessandro Portale wrote: I like the idea of re-starting small, and quite a bit of what was done in Nokia times can certainly be re-used. What if Qt

Re: [Development] Color Management support in Qt 5?

2013-11-13 Thread Alessandro Portale
On Sat, Nov 9, 2013 at 12:50 PM, Olivier Goffart oliv...@woboq.com wrote: Allow me to disagree :-) How usefull are 1-4 without 99? What exactly can you do with that information. I think that in the meantime this has been well reasoned by Kai-Uwe and John: It could be a sane starting point and

Re: [Development] Color Management support in Qt 5?

2013-11-11 Thread Olivier Goffart
On Sunday 10 November 2013 11:05:06 John Layt wrote: On 9 November 2013 12:50, Olivier Goffart oliv...@woboq.com wrote: On Saturday 09 November 2013 03:02:18 Alessandro Portale wrote: I like the idea of re-starting small, and quite a bit of what was done in Nokia times can certainly be

Re: [Development] Color Management support in Qt 5?

2013-11-10 Thread John Layt
On 9 November 2013 12:50, Olivier Goffart oliv...@woboq.com wrote: On Saturday 09 November 2013 03:02:18 Alessandro Portale wrote: I like the idea of re-starting small, and quite a bit of what was done in Nokia times can certainly be re-used. What if Qt started by simply *enabling* color

Re: [Development] Color Management support in Qt 5?

2013-11-09 Thread Olivier Goffart
On Saturday 09 November 2013 03:02:18 Alessandro Portale wrote: Allow me jump into this topic to contribute to its liveliness :) The term Color Management has been used in different ways here on the list. Lately, it was about how to blend images in a non-linear color space. That is IMHO

Re: [Development] Color Management support in Qt 5?

2013-11-09 Thread Kai-Uwe Behrmann
Am 09.11.2013 12:50, schrieb Olivier Goffart: On Saturday 09 November 2013 03:02:18 Alessandro Portale wrote: Allow me jump into this topic to contribute to its liveliness :) The term Color Management has been used in different ways here on the list. Lately, it was about how to blend images

Re: [Development] Color Management support in Qt 5?

2013-11-09 Thread Christoph Feck
On Saturday 09 November 2013 12:50:24 Olivier Goffart wrote: I think milestones could rather be: 1) QImage[Reader] converts automatically to linear color space, so that all QImage's are in the linear color space Needs a 48 bit QImage. I remember a proposal to add support for larger bit

Re: [Development] Color Management support in Qt 5?

2013-11-09 Thread Chris Gilbert
We created our own platform agnostic image loading and management code outside of Qt due to lack proper support in QImage for non typical texel formats/bit depths. (We support 8bit/16bit/32bit int and 16bit/32bit floating point) It should also be mentioned that on top of the QImage[Reader]

Re: [Development] Color Management support in Qt 5?

2013-11-08 Thread Kai-Uwe Behrmann
Am 08.11.2013 14:17, schrieb Sorvig Morten: On 07 Nov 2013, at 12:48, Kai-Uwe Behrmann k...@gmx.de wrote: Detecting a colour space and converting to device colour spaces is around the same amount of developer time as for special casing sRGB. Detecting sRGB among hundrets of ICC profiles

Re: [Development] Color Management support in Qt 5?

2013-11-08 Thread Alessandro Portale
Allow me jump into this topic to contribute to its liveliness :) The term Color Management has been used in different ways here on the list. Lately, it was about how to blend images in a non-linear color space. That is IMHO perhaps a small and not that typical part of what color management means

Re: [Development] Color Management support in Qt 5?

2013-11-07 Thread Kai-Uwe Behrmann
Detecting a colour space and converting to device colour spaces is around the same amount of developer time as for special casing sRGB. Detecting sRGB among hundrets of ICC profiles is not trivial or fast, while such a detection does not matter in a generic colour managed environment.

Re: [Development] Color Management support in Qt 5?

2013-11-06 Thread Sorvig Morten
On 04 Nov 2013, at 10:49, John Layt jl...@kde.org wrote: On 4 November 2013 08:22, Sletta Gunnar gunnar.sle...@digia.com wrote: The work that was done is here: https://codereview.qt-project.org/#dashboard,1002033 The work was abandoned after the transition to Digia and the author is no

Re: [Development] Color Management support in Qt 5?

2013-11-06 Thread Kai-Uwe Behrmann
What is the point of special casing sRGB? kind regards Kai-Uwe Behrmann Sorvig Morten morten.sor...@digia.com schrieb: On 04 Nov 2013, at 10:49, John Layt jl...@kde.org wrote: On 4 November 2013 08:22, Sletta Gunnar gunnar.sle...@digia.com wrote: The work that was done is here:

Re: [Development] Color Management support in Qt 5?

2013-11-06 Thread Sorvig Morten
On 06 Nov 2013, at 17:18, Kai-Uwe Behrmann k...@gmx.de wrote: What is the point of special casing sRGB? sRGB is special for a couple of reasons: - Most/Many of the images published for web are in the sRGB color space. - OpenGL has support for sRGB textures and frame buffers. Given that

Re: [Development] Color Management support in Qt 5?

2013-11-04 Thread Sletta Gunnar
: development-bounces+gunnar.sletta=digia@qt-project.org [development-bounces+gunnar.sletta=digia@qt-project.org] p#229; vegne av Knoll Lars [lars.kn...@digia.com] Sendt: 4. november 2013 01:54 To: John Layt; development@qt-project.org Emne: Re: [Development] Color Management support in Qt 5? Hi

Re: [Development] Color Management support in Qt 5?

2013-11-03 Thread Knoll Lars
Hi John, as far as I know thereĀ¹s nobody doing any work on it right now. Cheers, Lars On 02/11/13 14:10, John Layt jl...@kde.org wrote: Hi, I'm wondering if anyone is working on color management support in Qt 5? I know there was some thought about it before 5.0 and vague suggestions about