Created attachment 167177 [details] JPG Wide Gamut P3 - Logo on Red Should Be Visable STEPS TO REPRODUCE 1. Open Gwenview 2. Click the attatched photo. OBSERVED RESULT JPG wide gamut photos (P3) cannot be displayed. It should display webkit logo on a red background. This is a test 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 libjpeg-turbo 3.0.2 openjpeg2 2.5.2 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 167271 [details] Confirmed behaviour. I can confirm the same issue running the latest Neon.
From what I'm understanding according to this: https://www.wide-gamut.com/, you need to have a monitor that supports wide gamut to be able to see it. My monitor doesn't support it, so I'm unable to see anything. If you have a monitor with support for wide gamut, can you provide an example that does work for you? In any case, I think Gwenview uses libjpeg to display JPEG images, so its support is entirely dependent on libjpeg, I suppose? I tried looking for some information on whether libjpeg supports wide gamut or not and I found it to be a difficult. Some people[1] say it does, but it seems[2] most builds have it disabled by default. I feel like this should be an upstream bug. [1]: https://github.com/libjpeg-turbo/libjpeg-turbo/issues/222#issuecomment-382093583 [2]: https://news.ycombinator.com/item?id=37798069