[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 --- Comment #10 from Ye Jingchen --- (In reply to Toby from comment #6) > I can confirm that the 5.27 update fixed my issue (Wayland, 1.75 scale, > single monitor), so I suggest marking this as solved. > > The multi-monitor case is more tricky and maybe should have its own separate > issue. You're right, it works fine on a single monitor. I will open another issue. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 --- Comment #9 from Toby --- (In reply to Toby from comment #8) > (In reply to Ye Jingchen from comment #4) > > (In reply to Vlad Zahorodnii from comment #3) > > > The reason why screenshots are blurry is that kwin downscales the window > > > contents. 5.27 should be better. Note that the client side should also > > > support fractional scaling. Qt should support fractional scaling in 6.5+ > > > > I think the situation is a bit frustrating even in 5.27, because I still > > can't get a screenshot that looks the same as what is on screen. > > > > My theory is the same as what Toby described initially, that screenshots by > > Spectacle are way blurrier that on screen, not only because window content > > is scaled down (from 2x), but it's *scaled down and up again*, creating > > artifacts not present on screen. > > > > Though I wonder whether this is caused by kwin sending blurry images to > > Spectacle, or Spectacle mess up scaling stuff internally. > > 5.27 worked for me on Fedora KDE. I tested by displaying an image with > single-pixel dots on the screen and taking a screenshot, all dots are > clearly visible and not blurry. I guess it could be a distribution-specific > issue. Or might be related to multi-monitor setups -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 --- Comment #8 from Toby --- (In reply to Ye Jingchen from comment #4) > (In reply to Vlad Zahorodnii from comment #3) > > The reason why screenshots are blurry is that kwin downscales the window > > contents. 5.27 should be better. Note that the client side should also > > support fractional scaling. Qt should support fractional scaling in 6.5+ > > I think the situation is a bit frustrating even in 5.27, because I still > can't get a screenshot that looks the same as what is on screen. > > My theory is the same as what Toby described initially, that screenshots by > Spectacle are way blurrier that on screen, not only because window content > is scaled down (from 2x), but it's *scaled down and up again*, creating > artifacts not present on screen. > > Though I wonder whether this is caused by kwin sending blurry images to > Spectacle, or Spectacle mess up scaling stuff internally. 5.27 worked for me on Fedora KDE. I tested by displaying an image with single-pixel dots on the screen and taking a screenshot, all dots are clearly visible and not blurry. I guess it could be a distribution-specific issue. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 Nate Graham changed: What|Removed |Added Status|REPORTED|RESOLVED Resolution|--- |FIXED --- Comment #7 from Nate Graham --- Indeed, that would make sense. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 --- Comment #6 from Toby --- I can confirm that the 5.27 update fixed my issue (Wayland, 1.75 scale, single monitor), so I suggest marking this as solved. The multi-monitor case is more tricky and maybe should have its own separate issue. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 Nate Graham changed: What|Removed |Added Resolution|FIXED |--- Version|5.25.5 |5.27.0 Status|RESOLVED|REPORTED -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 --- Comment #5 from Ye Jingchen --- Created attachment 156301 --> https://bugs.kde.org/attachment.cgi?id=156301=edit Dolphin window across screen border I have two monitors side by side, the left one scaled at 200% and the right one 150%. This is what Spectacle takes after putting a Dolphin window at screen border: left half is pixel sharp, but the right half is weirdly scaled. To the eye, the right half roughly similar to the left half. Using Plasma Wayland 5.27 on Arch Linux. GPU is AMD Radeon 680m (integrated graphics), mesa 22.3.4-1. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 --- Comment #4 from Ye Jingchen --- (In reply to Vlad Zahorodnii from comment #3) > The reason why screenshots are blurry is that kwin downscales the window > contents. 5.27 should be better. Note that the client side should also > support fractional scaling. Qt should support fractional scaling in 6.5+ I think the situation is a bit frustrating even in 5.27, because I still can't get a screenshot that looks the same as what is on screen. My theory is the same as what Toby described initially, that screenshots by Spectacle are way blurrier that on screen, not only because window content is scaled down (from 2x), but it's *scaled down and up again*, creating artifacts not present on screen. Though I wonder whether this is caused by kwin sending blurry images to Spectacle, or Spectacle mess up scaling stuff internally. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 Nate Graham changed: What|Removed |Added Resolution|WORKSFORME |FIXED Version Fixed In||5.27 -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 Vlad Zahorodnii changed: What|Removed |Added Status|REPORTED|RESOLVED Resolution|--- |WORKSFORME --- Comment #3 from Vlad Zahorodnii --- The reason why screenshots are blurry is that kwin downscales the window contents. 5.27 should be better. Note that the client side should also support fractional scaling. Qt should support fractional scaling in 6.5+ -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 Ye Jingchen changed: What|Removed |Added CC||ye.jingc...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 zvova7...@gmail.com changed: What|Removed |Added CC||zvova7...@gmail.com --- Comment #2 from zvova7...@gmail.com --- kwin 5.26.5 and related components is achieved support for fractional scale protocol, and now content on the screen looks not blurry with non power of two scales! This bug was my critical blocker before I can move to wayland session. And now finally we have some initial support, that is great :) But spectacle continues to take blurry screenshot. Also final image resolution is not match to monitor resolution. With 150% scale on monitor with resolution 2560x1440 - final spectacle image resolution is 2561x1440. This is some rounding issue, I assume. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 460675] blurry screenshot under wayland with fractional scaling
https://bugs.kde.org/show_bug.cgi?id=460675 Nate Graham changed: What|Removed |Added CC||n...@kde.org Component|General |wayland-generic Version|22.08.1 |5.25.5 Product|Spectacle |kwin Assignee|m...@baloneygeek.com |kwin-bugs-n...@kde.org --- Comment #1 from Nate Graham --- In fact that's exactly what's happening; this is how fractional scaling works on Wayland for the time being. It's an active area of work though, so hopefully it will be better with Plasma 5.27. -- You are receiving this mail because: You are watching all bug changes.
