List of Unreal Engine 4-5 games where HDR can be forced

Unreal Engine 4 and Unreal Engine 5 have native HDR output that can be forced in many newer games with mixed results.

Earlier versions of Unreal Engine 4 required running in Exclusive Fullscreen (FSE) in order for this to work, while newer versions supports it for windowed modes as well, though some more recent versions have broken HDR in DirectX 12,^{[citation needed]} requiring the use of -dx11 launch argument to run games in DirectX 11.^{[Note 1]}

General information

See the official engine documentation for more details.

See High dynamic range (HDR) for more information about HDR.

Instructions

Enable native HDR output

Using this guide on the UE4 engine page, change Engine.ini to include these lines:

[SystemSettings]
r.AllowHDR=1
r.HDR.EnableHDROutput=1
r.HDR.Display.OutputDevice=5
r.HDR.Display.ColorGamut=2

Optionally you can add these lines to boost the UI brightness. This might make the UI integrate better with HDR.

r.HDR.UI.CompositeMode=1
r.HDR.UI.Level=1.5

Supported games

The below is an attempt to list all known titles where Unreal Engine 4 and 5's native HDR output support can be forced.

Name	Render API	Notes
Blacktail	D3D11
Ghostrunner

Notes

↑ Running a game in D3D11 may not be officially supported and may experience additional unexpected issues unrelated to HDR.

References

[Note-1] Running a game in D3D11 may not be officially supported and may experience additional unexpected issues unrelated to HDR.

[Note 1]