Bug 455501 - Blend effect's transition is disruptive in full-screen windows like videos and games
Summary: Blend effect's transition is disruptive in full-screen windows like videos an...
Status: RESOLVED DUPLICATE of bug 467381
Alias: None
Product: kwin
Classification: Plasma
Component: effects-various (show other bugs)
Version: 5.25.0
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-06-17 17:23 UTC by w7lrom2ku
Modified: 2024-09-17 12:50 UTC (History)
2 users (show)

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Description w7lrom2ku 2022-06-17 17:23:57 UTC
SUMMARY
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When you use slideshow wallpaper changer and watch a video it won't be a good experience when the entire screen freezes out. because of the new blend effect.

Possible solution: I think the blend effect (new effect that makes the accent color transition smooth) should be disabled when an app is on fullscreen-mode.
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STEPS TO REPRODUCE
1. enable slideshow wallpaper
2. watch a Youtube video with adaptive accent color enabled

OBSERVED RESULT
Video stutter every 15 minutes
Possible solution: I think the blend effect (new effect that makes the accent color transition smooth) should be disabled when an app is on fullscreen-mode. 

EXPECTED RESULT
Smooth video playback

SOFTWARE/OS VERSIONS

Operating System: Arch Linux
KDE Plasma Version: 5.25.0
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.4
Kernel Version: 5.18.3-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-6400 CPU @ 2.70GHz
Memory: 7.7 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 750 Ti/PCIe/SSE2
Manufacturer: Gigabyte Technology Co., Ltd.

ADDITIONAL INFORMATION
Comment 1 Nate Graham 2022-06-17 19:04:50 UTC
The proposal makes a lot of sense when you're viewing a full-screen app that doesn't respect the color scheme at all like a game, or when the full-screen app is playing a video. It makes less sense when you're in a full-screen app that does respect the color scheme, like Kate or Gwenview.

Since we can't easily detect this, maybe on balance it makes more sense to suppress the effect for all fullscreen apps.
Comment 2 w7lrom2ku 2022-06-19 19:48:02 UTC
(In reply to Nate Graham from comment #1)
> The proposal makes a lot of sense when you're viewing a full-screen app that
> doesn't respect the color scheme at all like a game, or when the full-screen
> app is playing a video. It makes less sense when you're in a full-screen app
> that does respect the color scheme, like Kate or Gwenview.
> 
> Since we can't easily detect this, maybe on balance it makes more sense to
> suppress the effect for all fullscreen apps.

thank you for your response. I'm not really into KDE's development. But probably detecting windows that "constantly moving" or "playing a video" or "graphic intensive" and disabling the blend effect for them would be a better idea. that way apps like kate and Gwenview won't have the issue which you mentioned. plus non-fullscreen playback won't suffer anymore.
Comment 3 Nate Graham 2022-07-18 20:35:39 UTC
*** This bug has been marked as a duplicate of bug 455812 ***
Comment 4 Nate Graham 2024-09-17 12:50:36 UTC
*** This bug has been marked as a duplicate of bug 467381 ***