https://bugs.kde.org/show_bug.cgi?id=478860
Bug ID: 478860
Summary: SDR Brightness slider affects HDR content
Classification: Plasma
Product: kwin
Version: 5.90.0
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: jbenn...@incomsystems.biz
Target Milestone: ---
SUMMARY
While playing HDR videos with MPV, the brightness is all wrong and highlights
are blown out, when using a very low SDR brightness setting in System
Settings/Display & Monitor
STEPS TO REPRODUCE
1. Use "ENABLE_HDR_WSI=1 mpv --vo=gpu-next --target-colorspace-hint
--gpu-api=vulkan --gpu-context=waylandvk" to play an HDR video on an HDR
capable monitor
2. Turn the SDR Brightness slider in Display Configuration up and down
3. Watch the hilights blow out and the video look terrible
Operating System: Fedora Linux 40
KDE Plasma Version: 5.90.0
KDE Frameworks Version: 5.246.0
Qt Version: 6.6.1
Kernel Version: 6.6.6-200.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 6700 XT
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: X570 AORUS ELITE
System Version: -CF
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