https://bugs.kde.org/show_bug.cgi?id=521290
Bug ID: 521290
Summary: Intel Haswell + Wayland + simple color correction =
degraded performance.
Classification: Plasma
Product: kwin
Version First 6.6.5
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: colour-management
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
When applying a simple ICC profile under Plasma Wayland, My Haswell IGP
performances degrades by about 10%.
Under Xorg, the same ICC profile can be applied via dispwin (I guess via RandR
CRTC gamma LUT / hardware 1D gamma ramp), with absolutely NO IMPACT.
Could you please consider supporting a "fast path” for ICC profiles that can
be mapped directly to hardware CRTC gamma LUT (1D), without forcing (i guess)
shader-based color transformation?
This would preserve Xorg-par performance for simple display calibration
profiles while still allowing full color management paths for advanced ICC
profiles requiring 3D LUTs.
Thanks.
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