On Wed, 2012-11-14 at 11:57 +0400, Paul Geraskin wrote: > Hi again. > > I talked to Krita developer "Boud" by IRC and he said many interesting > things about linear RGB. > He said that there is no need to convert to Linear RGB. Krita does not > convert anything. It only mixes layers. I suggest you trust what the gimp developers say about what needs and needs not to be done in gimp code. > So everything is simplier. You just need to implement my patch and make > "New Overlay"/"Legacy Overlay" > for new/old XCF formats. No, it is exactly as i said. --mitch > Entire talk: > [11:36]<boud> mifth: yes > [11:38]<mifth> i have a tlkt to gimp devs about Overlay mode. There is a > question: do you convert to Linear RGB layers before mixing and then to > sRGB/RGB16 after mixing? > [11:38]<mifth> talk* > [11:39]<boud> no -- krita users can create their images in linear rgb > and work in that mode if they want, but otherwise, everything is done in > the current colorspace > [11:39]<mifth> i mean in Krita of course > [11:40]<boud> this is different from gegl, which, afaik, always works > with 32 bit floating point linear rgb > [11:41]==thorwil[~thorwil@79.251.116.204] has joined#krita > [11:42]<mifth> For eaxmple i created an image RGB8 in Krita. Then i did > some layers with different modes. Does Krita convert RGB8 to Liner RGB > to mix layers? > [11:43]<boud> no -- if you have layers in different color models, krita > will convert those layers to the image model before composition > [11:45]<mifth> Gimp devs say that they should convert to liner RGB > before mixing layers? Are they right? > [11:45]<mifth> i'll post some their posts now > [11:45]<boud> I'm on the mailing list :-0) > [11:45]==LukasT[~zil00064@213.95.68.61] has joined#krita > [11:45]<mifth> aha cool > [11:46]<mifth> what do you think about that talk? > [11:46]<boud> it's something that one can debate... the thing is, that > yets, there are advantages. But artists often don't want the way linear > rgb works, it confuses them > [11:46]<boud> it affects the way layers are blended together, and they > are used to the non-linear system > [11:46]<boud> so krita gives people a choice: choose to work in linear > rgb, or not > [11:48]==home[~home@unaffiliated/home] has joined#krita > [11:48]<mifth> interesting.. > [11:48]<boud> it also means you can easily experiment with the > differences in krita :-) > [11:49]<mifth> where can be switching to linear in Krita? > [11:49]<Bugsbane> I've just updated Krita.org to the latest version of > Joomla and it's plugins. It should all work fine, but if anyone comes > across anything weird, I'd appreciate hearing about it! > [11:49]==MrBeast[~foo@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx] has quit [Read > error: Connection reset by peer] > [11:50]<boud> Bugsbane: ok! > [11:50]<boud> mifth: image/convert image type, select an scRGB profile. > [11:50]<mifth> boud: other question: Is it ok to mix layers with > different modes without convertion to linear RGB? > [11:51]<boud> yes, in krita it is > [11:51]<mifth> cool > [11:51]<boud> but afaik, krita is the only application that allows you > to have layers of different color models > [11:51]<mifth> thank you for talking > [11:51]<mifth> i'll post it to Gimp mailing list > [11:52]<boud> you're welcome > [11:52]<boud> oyvind kolas (pippin) knows how krita works, btw, but he > thinks we're doing it wrong by allowing the user that flexibility > > > > On 13.11.2012 21:37, Michael Natterer wrote: > > The problem is much bigger. Almost *all* of our layer modes > > will be "Legacy", and the new modes will operate in linear > > light. Just adding a hack for overlay is not going to > > fix the root problem. > > > > --mitch > > > > _______________________________________________ > gimp-developer-list mailing list > gimp-developer-list@xxxxxxxxx > https://mail.gnome.org/mailman/listinfo/gimp-developer-list _______________________________________________ gimp-developer-list mailing list gimp-developer-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gimp-developer-list
