dwm_lut VS MHC2

There is also this: https://github.com/ledoge/dwm_lut

If you want to use 3DLut, then I suggest using DWMLut, because Win10 DWM (Desktop Window Manager) is everywhere, even if it is exclusive full screen and the desktop optimization settings are turned off, it is possible to maintain calibration, and currently BattlEye and EAC do not block DWMLut ; please do not use it with ICC and VCGT calibration because it will cause secondary calibration problems.

You should be able to hack dwm_lut to apply your shader! Not sure how easily hackable the code is, but everything you need (hooking into DWM + the scaffolding for applying a shader) is in there.

I would also recommend investigating dwm_lut or novideo_srgb as alternatives to actually applying the profile, as they're actually a bit more robust than the native Windows color management system.

If you need color accuracy, then give dwm_lut a try. If you generate a 3D LUT properly in DisplayCal with a good colorimeter like a Calibrite (and a proper correction profile) and import the LUT into dwm_lut then you'll have accuracy that's likely beyond anything you've ever used before unless you're accustomed to using wide gamut displays with hardware 3D LUTs.

Material needed : - Your colorimeter with Diplaycal - A D65 light bulb with high color rendering index (Do your own researchs as IDK where you live and I don't want to ;-) ) - A colorchecker passport (Calibrite brand is good) - A digital camera - The software Lumariver profile designer to calibrate the digital camera : http://www.lumariver.com/ - The DWM_LUT here : https://github.com/ledoge/dwm_lut - Patience of cours ! :-)

https://github.com/ledoge/dwm_lut :)

For more information and links on MHC2 see here: https://github.com/dantmnf/MHC2

This reverse engineered documentation was the only real resource for a while, but since then Microsoft have published their own documentation here. The new ICC profile stuff is specifically the MHC2 tag.

There's not really much benefit to the HDR Calibration tool over just using CRU to set the max brightness. With better calibration tools MHC2 advanced color ICC profile extensions allows full GPU-based calibration using MHC2Gen as an alternative to tools like novideo_srgb but that's a bit pointless on LG with 3dlut support. Could be useful on monitors with wonky calibration and gamma though.