Re: [Gimp-developer] GIMP requires the GEGL operation gegl:over.
i just found the solution and it is a really strange one. i have a softlink from /usr/bin/gimp to /usr/bin/gimp-2.9 when i run gimp i get the gegl error, when i run gimp-2.9 i don't. - Original Message - | From: Michael Natterer mi...@gimp.org | To: Adi Spivak adi...@compulab.co.il | Cc: gimp-developer-list@gnome.org | Sent: Wednesday, October 9, 2013 6:30:58 PM | Subject: Re: [Gimp-developer] GIMP requires the GEGL operation gegl:over. | | On 10/07/2013 10:23 AM, Adi Spivak wrote: | please add me in the reply to as i am not part of the DG. | | i am compiling from source using git. | i compile babl,gegl and gimp from git repositories. | for the last 5 compile i get this error on concole: | (gimp:11790): GEGL-gegl-operations.c-WARNING **: Adding | GeglChantinvert-linear_c shadows GeglChantinvert_c for operation | gegl:invert | | and then this popup: | | GEGL operation missing! | GIMP requires the GEGL operation gegl:over. | This operation cannot be found. Check your | GEGL install and ensure it has been compiled | with any dependencies required for GIMP. | | | i cannot find a solution to this in google. | can you help? | | Remove all installed GEGL operations, do a git clean -xdf in | the gegl source tree, then rebuild and install. | | --Mitch | | | -- Regards, Adi Spivak IT Manager 17 HaYetzira St, Mordot HaCarmel Industrial Park, Yokneam Elite Mail: P.O Box 687, Yokneam 20692. Israel TelFax.: (+972) 48-290-124. (+972) 48-290-100 www.fit-pc.com www.compulab.co.il ___ gimp-developer-list mailing list List address:gimp-developer-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list
Re: [Gimp-developer] Documentation on color spaces
On 10/9/13, Øyvind Kolås pip...@gimp.org wrote: Combined with your color knowledge you are be much more well suited to clarify what the babl format strings we keep using in GIMP mean, as well as how it fits into our overall scheme of things in current and future GIMP. What you do not understand; we might not quite understand ourselves yet either. The babl README/website, our lowest level of developer documentation relevant to this hasn't seen much improvement during the last half decade or so. This is generated from some static html in the docs directory of the source code in git. One could almost start with a link to your current write-up. I see no problem in the content our alternate versions of the content being used different places. Øyvind Hi Pippin, The existing babl documentation is mostly a list of formats and bit depths available for different color spaces, yes? If there is a way I can contribute to making the babl documentation more helpful for people who write code that uses babl, perhaps by adding to the babl documentation? I'll give it a try. But I don't have a grasp of what might be unclear to whom, so an example or two would help. Is part of what you mean perhaps issues like choosing the wrong format for ICC profile conversions or for opening tiffs? Elle ___ gimp-developer-list mailing list List address:gimp-developer-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list
Re: [Gimp-developer] Documentation on color spaces
Elle Stone (l.elle.st...@gmail.com) wrote: On 10/9/13, Simon Budig si...@budig.de wrote: Another (slightly philosophical) issue for me is, that you never explain what you mean by color. I added a one-paragraph summary of color: http://ninedegreesbelow.com/photography/xyz-rgb.html What do you think? Will my one-paragraph summary work? Yeah, I like it. I am not sure if mentioning this helps or if it confuses stuff... :) Based on your input I rewrote the explanation of imaginary colors, hopefully clarified what a real color really is, and touched on the subject of nonstandard color perception. Metamerism, though very important, might be more distracting than helpful? Yeah, Metamerism probably is distracting. For my mental model of color the spectral distribution of the light is quite important and I wonder if it would help a color-newbie to have more of this tangible stuff in the text. But this certainly also is a question of personal preference and I don't want to impress my views onto your text :) To look at the weaknesses/hypothetical problems of the XYZ model there are two things worth noting: a) two distinct spectral distributions might end up at the same XYZ coordinates. b) there are XYZ coordinates in the first octant, which can not be mapped back to a spectral distribution. (put in mathematical terms: XYZ is neither injective nor surjective) And I'd explain it by looking at the monochromatic light (visible to the average human), which has a very specific position at the border of the horseshoe. By adding up more wavelengths you'll always end up inside the horseshoe, (and there is more than one way to add up monochromatic light to end up at a certain XYZ coordinate). On the other hand, creating an actual light source with XYZ coordinates *outside* the horseshoe is an impossibility, even for rocket scientists, unless we assign XYZ coordinates for invisible wavelengths or allow for negative light sources... The human aspect of XYZ is visible in two aspects: first the limited spectrum we consider and then the weird shape of the horseshoe, which is determined by the response curves of the average cones in the human eye. But only the first one has an effect on the reality vs. imaginarity of a XYZ coordinate IMHO. However, adding tons of more diagrams with spectral distributions, X/Y/Z response curves etc. would at some point destroy your intentions with your text, so I won't complain... :) Bye, Simon -- si...@budig.de http://simon.budig.de/ ___ gimp-developer-list mailing list List address:gimp-developer-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list
Re: [Gimp-developer] Documentation on color spaces
On 10/10/2013 06:10 AM, Elle Stone wrote: I added a one-paragraph summary of color: http://ninedegreesbelow.com/photography/xyz-rgb.html What do you think? Will my one-paragraph summary work? That one paragraph, with its descending tree of links, appears to me to provide a path to a post-graduate color perception/management course. Beautiful! -- Burnie ___ gimp-developer-list mailing list List address:gimp-developer-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list
