r/GIMP • u/Gr6462 • 3d ago

outils texte gimp 3.0 / Gimp 2.10

Lorsque j'importe un fichier Gimp 2.10 en 3.0, le calque texte apparait dans un premier temps avec la bonne couleur puis lorsque je clique sur la sélection de la couleur, elle donne bien la bonne référence couleur de GIMP 2.10 mais en validant la couleur qui apparait dans l'ensemble de la fenêtre texte n'est plus du tout la même, plus claire pour le rouge foncé, plus pale pour le pourpre voire terne. Quelqu'un a -t-il déjà eu le problème d'autant plus gênant que le retour à 2.10 n'est plus possible.

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u/ofnuts 3d ago

Can we have the full UI (in particular the Layers list?) The problem could be there (blend mode!=Normal).

PS: ce sub est en Anglais. Il est poli d'utiliser la langue du sub, au besoin en passant par un traducteur genre Google. Ce n'est pas au autres de traduire dans les deux sens...

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u/Gr6462 2d ago

In this set of 4 successive screenshots, I started with GIMP 3.02 rev 1, created a new image, and then wrote the text "essai d'écriture" in two sizes with the color references I had in GIMP 2.10.

The color appears different but still close.

Next, I looked in the file from GIMP 2.10 for a text layer written in the same font, size, and color, and pasted it below. The color already appears different, even though it has the same color reference displayed by GIMP 3.02.

Finally, after opening the color modification window and selecting just a portion of the text from GIMP 2.10 (not the entire layer), without changing anything else (same color reference), I simply validated. Then the text appears in a third color, much paler, with the same color reference.

I started with a blank file, not one from GIMP 2.10, and simply pasted a layer from an image from GIMP 2.10.

I hope my explanations were clear enough, and if you have any idea about the problem and, more importantly, the solution so that a color reference matches just one color, please let me know.

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u/ofnuts 2d ago

I can't reproduce.. What I notice however is that your selected color is (37.3%,9.4%,13.3%) and shows as the paler (roughly, because no two pixels are exactly the same) (64%,33%,40%). And this is pretty much the conversion between linear and sRGB (64.5%,34%,40%).

So there is one conversion too many somewhere. What happens if you work in 8-bit non-linear encoding?

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u/Gr6462 2d ago

Indeed, I was using linear on Gimp 2.10 and non-linear on Gimp 3.10. By switching to non-linear on Gimp 2.10, the colors are preserved. The issue seems to be resolved. Thank you very much for your quick and effective help.