Gentoo Archives: gentoo-user

From: R0b0t1 <r030t1@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Does Gentoo support more than 8 bits per color channel?
Date: Fri, 20 Oct 2017 22:30:43
Message-Id: CAAD4mYi0kBSn+txDmWbsLkAb+PRzJzXixsOg3yY76+32fe_xUA@mail.gmail.com
In Reply to: [gentoo-user] Does Gentoo support more than 8 bits per color channel? by Helmut Jarausch
1 Hello,
2
3 On Fri, Oct 20, 2017 at 11:17 AM, Helmut Jarausch <jarausch@××××××.be> wrote:
4 > Hi,
5 > I'm considering buying a new monitor (and graphics card) which supports
6 > 10 bits per color channel.
7 > Will Gimp on a Linux machine (X11) support this now or in the near future.
8 > Or is it just waste of money to buy a monitor with more than 8 bits/color channel?
9 > Many thanks for some hints,
10 > Helmut
11 >
12
13 It is my understanding the software itself needs to support this. It
14 is rare enough that I do not know how it is done in practice, but,
15 generally, it would be necessary to specify relative colors or colors
16 by name and leave implementation up to a layer that translates the
17 color spaces.
18
19 This would be similar to what has to happen for high DPI displays. If
20 a program is not aware that pixels can be different sizes, it will not
21 make use of the extra resolution properly.
22
23 High end graphics cards have implemented features related to what you
24 are asking about. Some support transformations that happen directly on
25 the tuples that represent the color model of the human eye, or the
26 model of the reflectivity of pigments used in printing. I have yet to
27 see any programs which actually use these features.
28
29 Checking the Wiki, "deep color" capable graphics cards have existed
30 since the 1990s. Also at
31 https://en.wikipedia.org/wiki/Color_depth#Deep_color_.2830.2F36.2F48-bit.29
32 are compatibility notes that seem to indicate that color depth is
33 mediated by the graphics card and screen. It is up to the program to
34 ask for colors of that depth to be displayed.
35
36
37 Short answer: Open bug reports on the trackers for the programs you
38 are interested in.
39
40 Cheers,
41 R0b0t1.