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Install dwm_eotf_rs using WinGet - wingetCollections
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dwm_eotf_rs SERGEYDJUM

Use this command to install dwm_eotf_rs with WinGet:
winget install --id=SERGEYDJUM.dwmEOTFrs -e

dwm_eotf_rs is a utility designed to correct SDR-to-HDR color conversions in Windows by patching shaders within the dwmcore.dll module. This tool serves as an enhanced alternative to its predecessor, offering improved reliability and additional functionality.

Key Features:

  • System tray controls for easy toggling of shader patches
  • Autostart capability via Task Scheduler for seamless operation
  • Shader dumping feature for research purposes
  • Compatibility mode for simplified console usage
  • More reliable performance compared to previous versions

Audience & Benefit:
Ideal for Windows users experiencing incorrect color reproduction in HDR content. It provides a user-friendly solution to ensure accurate display calibration, eliminating the need for multiple attempts or manual intervention. The tool is particularly beneficial for gamers and professionals requiring precise color accuracy.

This software can be installed via winget, ensuring straightforward setup for end-users.

README

About

dwm_eotf_rs fixes washed out look in Windows' UI, applications and some SDR games, when HDR is enabled, by replacing DWM's piecewise sRGB transfer function with proper gamma curve.

It does that by reading memory of the loaded dwmcore.dll module, patching shaders that are responsible for incorrect SDR to HDR conversions and writing it back.

This is an alternative implementation of the same idea that is behind dwm_eotf. dwm_eotf_rs is a major upgrade in terms of QoL, it also provides additional features, such as system tray controls, autostart and shader dumping. It's more reliable as well, as it does not require multiple retries for it to work.

You do not need to disable/revert the patch (or restart DWM) when playing HDR games or videos. It only affects DWM composed SDR content!

Usage

Help Output

Patches DWM's shaders to use proper EOTF (gamma)

Usage: dwm_eotf_rs.exe [OPTIONS] [GAMMA] [COMMAND]

Commands:
  restore         Restores original sRGB EOTF (by restarting DWM)
  schedule        Creates a task ('dwm_eotf_rs') that runs the app on user logon
  unschedule      Removes the startup task ('dwm_eotf_rs') from Task Scheduler
  unschedule-all  Removes the startup task ('dwm_eotf_rs') from Task Scheduler for all users
  dump            Dumps DWM's original shaders as DXBC
  help            Print this message or the help of the given subcommand(s)

Arguments:
  [GAMMA]  Exponent to use during EOTF patching [default: 2.2]

Options:
  -c, --compatibility-mode       Patches DWM and exits (disables tray mode)
  -s, --skip-patching            Prevents automatic patching on app start (tray mode)
  -w, --wait-time     Delay (in seconds) before automatic patching on app start (tray mode) [default: 5]
  -i, --ignore-whitelist         Patch every shader that contains sRGB EOTF patterns
      --brightness   Brightness multiplier (factor for nits) [default: 1]
  -h, --help                     Print help
  -V, --version                  Print version

Tray Mode

By default, the app runs in system tray, where you can toggle patch as needed as well as select a gamma value (2.0/2.2/2.4/[GAMMA]).

When it launches, it will wait a few seconds (specified by -w option) before inital patching to avoid problems in some edge cases.

Versions
0.14.1
0.13.0
0.11.2
0.11.0
Website
github.com
License
Last updated
8/18/2026
Download latest version

Compatibility Mode

When supplied with the -c flag, dwm_eotf_rs works like a simple console app - it patches DWM and exits.

Startup

The app can register itself to run automatically when user logs in, using the Windows Task Scheduler (task named dwm_eotf_rs).

The -c schedule option combination schedules dwm_eotf_rs to autostart in Compatibility Mode. This is the intended way to use the app.

In tray mode, the context menu includes an "Autostart" checkable item that toggles the startup task on or off. If the gamma value is changed while autostart is on, the task is updated to use the new gamma.

Whitelist

By default, dwm_eotf_rs will patch only 4 shaders selected by ledoge. I think this covers most use cases, but it's possible to patch all shaders with same patterns by using --ignore-whitelist flag.

Shader Dumping

The app can dump DWM's shaders as DXBC files for research purposes.

These shaders are nested. There are 30 top-level shaders and hundreds of sub-shaders. Use --big-shaders flag to dump only former.

Library

dwm_eotf_rs depends on shader_patcher library from this repository that can be used to implement patching of other apps.

Known Issues

  • Chromium-based apps (Web browsers, VS Code, etc) also use incorrect curves and will switch back and forth between original and fixed look sometimes. Setting #force-color-profile flag to hdr10 or scrgb-linear will help somewhat.
  • Some SDR games bypass DWM when in fullscreen, so the dwm_eotf_rs will not help. You can use ReShade and Lilium's "SDR TRC Fix" shader in such cases.

Acknowledgements

  • Many thanks to ledoge for original C implementation.