Created attachment 167175 [details] P3 Webkit Logo on Red Background Should Be Visiable STEPS TO REPRODUCE 1. Open Gwenview 2. Click the attatched photo. OBSERVED RESULT PNG wide gamut photos (P3) cannot be displayed. It should display webkit logo on a red background. This is a test file from google/webkit/blink and joint picture expert group (google phones, browsers, apple phones can make such photos, importing and viewing them in KDE will fail). There's no logo. NO LOGO = FAIL. EXPECTED RESULT Fix the support for google/android and apple phones and their photos (wide gamut png, aka P3- see wikipedia, you know there's not only Adobe on this world...adobe srgb...). Webikit logo on Red should be visible. If there is no logo, then there's no support. NO LOGO=NO SUPPORT. SOFTWARE/OS VERSIONS: KDE Plasma Version: 6.0.1 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Graphics Platform: X11 Graphics Processor: Intel Only ADDITIONAL INFORMATION: $ pacman Qs 'xxxx': kdesdk-thumbnailers 24.02 kdegraphics-thumbnailers 24.02 ffmpegthumbs 24.02 qt6-imageformats 6.6.2 kimageformats 6.0.0 libpng 1.6.43 libavif 1.0.4 libheif 1.17.6 libwebp 1.3.2 libjxl 0.10.2 webp-pixbuf-loader 0.2.7 P.S. Gwenview displays thumbnails (click "browse" in top left) correctly. There is red background and webkit logo on it, but Gwenview cannot display this photo. It displays only red background, but no logo, hence fail.
Created attachment 167274 [details] Confirmed on latest Neon I confirm same behavior using the latest Neon.
*** Bug 483565 has been marked as a duplicate of this bug. ***
Thank you for the bug report. Unfortunately we were not able to get to it yet. Can we ask you to please check if this is still an issue with Gwenview 25.08.0 (the latest released version)?
Hey, I am also experiencing this issue, I am on 25.08.1 currently, using Arch Linux. I am using a 98% DCI-P3 coverage screen, which should be able to handle 10 bit input. I had to manually toggle WCG from kscreen-doctor, as it was set to inactive by default. Colors did lose saturation after this, so it had some effect, but was not able to verify if it's working. I tried using Gwenview and these webkit comparison images, but it's just flat red like others described. I am not sure if the issue lies in Gwenview or KWin, or what other apps should I check that are likely to work, but I can share I experience the same
(In reply to David from comment #4) So I bumped into something which might provide a lead here. I tried opening the same test images with Krita, and they behaved the same. That said, opening Krita, and it showing a recent files view, I have seen a tonemapped image here, or at least an image that had the patterns visible, albeit opening it was still showing just plain red. After playing around with Krita settings, what I've found is, "Use system monitor profile" was not working correctly. If it's ticked and you change the selected icc, it doesn't save at all, but it's more of a Krita issue, but manually selecting the correct ICC profiles ended up with the patterns on the image visible. That leads me to the guess, that maybe this is an issue with how applications load the system-wide ICC profile set?