On 10/12/2014 09:01 AM, Simone Karin Lehmann wrote:
Am 12.10.2014 um 12:46 schrieb Øyvind Kolås <[email protected]>:
On Sun, Oct 12, 2014 at 8:41 AM, Elle Stone
<[email protected]> wrote:
On 10/11/2014 08:52 PM, Jon Nordby wrote:
Please correct me if I misunderstood what you are saying. I think you are
saying:
GIMP uses GTK+.
GTK+ uses Cairo APIs for rendering to the screen.
Cairo APIs assume 8-bit sRGB.
Therefore in GTK+ applications such as GIMP, images must be converted to
sRGB before they can be displayed on the screen.
Cairo is just one part of our eco-system which is following the
guidelines of how to integrate with color management even if you do it
badly; assume sRGB.
so that means, that specifying a monitor profile in GIMP’s preferences other
than sRGB will result in displaying wrong colors. Or am I wrong?
I didn’t know that.
On systems with builtin desktop CM, like OS X, wouldn’t it be better to disable
the choice of a monitor profile in GIMP at all, as long as cairo assumes SRGB?
In reality, it is not the case that images in GIMP must be converted to
sRGB before they can be displayed on the screen. There is no such
conversion in the entire babl/GEGL/GIMP code base. If there were, there
would be precious little reason for letting the user set a monitor profile.
I wasn't agreeing with what Jon Norby said. I was asking if I understood
him correctly.
Sorry for causing confusion!
Best regards,
Elle Stone
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