From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 27A6D1396D9 for ; Fri, 20 Oct 2017 22:30:43 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 3B3A62BC061; Fri, 20 Oct 2017 22:30:32 +0000 (UTC) Received: from mail-yw0-x244.google.com (mail-yw0-x244.google.com [IPv6:2607:f8b0:4002:c05::244]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id D74042BC03D for ; Fri, 20 Oct 2017 22:30:26 +0000 (UTC) Received: by mail-yw0-x244.google.com with SMTP id z195so1175127ywz.6 for ; Fri, 20 Oct 2017 15:30:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=bj7GO+zBVpefA5tYrflZcdijrzNblgyWrd3OEyqUcwM=; b=WwJAY+9QwXdEz7F0ao6DKX6e6cwZ5pqUv6PA6HfxGe+UjmBFusT9JbUq8VEuCe/LkG lNuXUpkTf+uc+9DO2pq8VH0JmwMZVyxc5JqpnuA1ziQzgsUNvO24ulK+gnnheE0tsrSJ UKZbxP/0yIgnXsUfC6O/sBTp2sbTO1yOBry2wlpWCMEVhs1yYSBfIr5doCjNoen0c8Fn YmwSEydyhoHKyiRpIbdVLa6yMmJ8HC89VpIauWRPCC1G7+v1iu4KWKZZKcd+Nb3q+6Ku tQo+/13O9O+IUis9WtvmODfYYr26eOpp4GDddClVsjqVD5+NJktPdvk6J8O2ZxE20vlw xY0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=bj7GO+zBVpefA5tYrflZcdijrzNblgyWrd3OEyqUcwM=; b=is+QDj/xKr31DPYF2mHnXzKwj/jzZABQI4kZojTnWwNVtLv4YsSsaP50qFVpSO0Xn5 /oEkvN8VgxkDsyf0kOdCa4atdKqSzxlSFejSM0bpEkYV9lHAxAaD7XGdn6ZcFTa/euqn eeZFbqqG1vTEYr+zu6c1frZaWv4esH6o6KhjSc1jdkcUhQehjNHuN77xsVJjnrdA8kQV r+salZmNyYwJkQHUYgk5KkO6bWlmG2slvQpcyGQonUwDEJdeG5wj0NqwP+FrJVaW5FfX ZNnAsgYvvS/vPW03mctRs/2bjZvERwjpzXUXn1otdvFpvsOZ8ghY2lWBPtUj3gpb3leL VfGg== X-Gm-Message-State: AMCzsaXD+hbUSv5141pg05cyKD7+NJnADuQgK0CE/kHZPOsZUu/2weUa Ix+flL6SiERCMrxjioAI13AW30VlrZHYjoGW457oCw== X-Google-Smtp-Source: ABhQp+TCfiw+X3dK/V+JtW2CjlkyiUl/325PJMr6y3dHGaQt+lnHLKM3O/80DxTFT0UUESCgrDu/6bUMIGgoMiOA3QI= X-Received: by 10.37.199.134 with SMTP id w128mr4240853ybe.21.1508538625841; Fri, 20 Oct 2017 15:30:25 -0700 (PDT) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.129.153.84 with HTTP; Fri, 20 Oct 2017 15:30:24 -0700 (PDT) In-Reply-To: <17f171$5qbec9@relay.skynet.be> References: <17f171$5qbec9@relay.skynet.be> From: R0b0t1 Date: Fri, 20 Oct 2017 17:30:24 -0500 Message-ID: Subject: Re: [gentoo-user] Does Gentoo support more than 8 bits per color channel? To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset="UTF-8" X-Archives-Salt: 985aa78c-ff23-453d-a786-317a558cc6b5 X-Archives-Hash: 8fe5d546ff11fcec1a13461a6eb937a7 Hello, On Fri, Oct 20, 2017 at 11:17 AM, Helmut Jarausch wrote: > Hi, > I'm considering buying a new monitor (and graphics card) which supports > 10 bits per color channel. > Will Gimp on a Linux machine (X11) support this now or in the near future. > Or is it just waste of money to buy a monitor with more than 8 bits/color channel? > Many thanks for some hints, > Helmut > It is my understanding the software itself needs to support this. It is rare enough that I do not know how it is done in practice, but, generally, it would be necessary to specify relative colors or colors by name and leave implementation up to a layer that translates the color spaces. This would be similar to what has to happen for high DPI displays. If a program is not aware that pixels can be different sizes, it will not make use of the extra resolution properly. High end graphics cards have implemented features related to what you are asking about. Some support transformations that happen directly on the tuples that represent the color model of the human eye, or the model of the reflectivity of pigments used in printing. I have yet to see any programs which actually use these features. Checking the Wiki, "deep color" capable graphics cards have existed since the 1990s. Also at https://en.wikipedia.org/wiki/Color_depth#Deep_color_.2830.2F36.2F48-bit.29 are compatibility notes that seem to indicate that color depth is mediated by the graphics card and screen. It is up to the program to ask for colors of that depth to be displayed. Short answer: Open bug reports on the trackers for the programs you are interested in. Cheers, R0b0t1.