Steps to reproduce: * [enable the kscreen effect]; * Set "Animation speed" to "Very slow"; * Lock screen. Expected results: * The panel fades to black; Actual results: * The panel stays bright.
The problem is that content of the panel is translucent. W.r.t. the blur effect, it makes sense to not modulate blurred stuff with "brightness and saturation". On the other hand, with the background contrast effect, things are a little bit different... I'm not sure whether that's a bug at all. Anyway, I can think of 2 potential solutions: * copy and increase contrast in a single pass, then use a shader from libkwineffects to map and also modulate the result; * copy what's underneath, then increase contrast and "modulate" in a single pass(e.g. by tweaking color matrix). I'm lowering priority of this bug report because it's really hard to notice this bug(?).
> I'm not sure whether that's a bug at all. It If you draw custom content for a window, it should follow the relevant WindowPaintData. Contrast already follows translations and opacity, it does makes sense that it should follow brightness/whatever elese. As for the suggestions, I don't think 2 is too difficult, we just add a uniform and one multiply of the rgb... but I also agree that you can't really see it, so it's not really worth doing too much.
This issue report is quite old. Can you please confirm, that it still persists with KDE 5.23?
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!