HDR support for screenshot capture feature in ReShade

Hello.
Maybe it is possible to add HDR support for screenshot capture feature in ReShade?
I think JXR format can store HDR data and maybe some other formats can do this too?

Perhaps if native HDR detected or forced/modded HDR with some other methods (ReShade addon or Nvidia RTX HDR or Auto-HDR or something else) then ReShade could auto-save not in PNG or JPEG but switch to these formats...
Or it can be a toggle in the ReShade setting that saved in the ReShade game INI, just like you can select PNG format currently. So if you have some HDR game you just tick that toggle.

I know that you can use some external tools to capture HDR screenshots, but they are slow in capturing action-packed scenes or even pops some UI elements while capturing screens.

I second this. Reshade is the best way to take consistent screenshots that I've found, but it not working in HDR leaves things like the Nvidia App (literally horrible quality) and other very intrusive capture methods.

+1

When you play with in game HDR and taken screenshot with Reshade, the game HDR isn't captured, result in washed out picture ...

+1
Reshade screeonshot is the best one for people playing many games, because you can set custom screenshot path for different games.
What a pitty HDR is not supported.

Is there anything that can be done? Is there a worthwhile hdr imitation?

I have implemented HDR screenshots in ReShade, there's plenty that can be done

github.com/crosire/reshade/pull/333

Pre-built binaries with that pull request built-in:
sk-data.special-k.info/misc/ReShade-HDR_PNG.7z

Special K supports HDR PNG, JXR, JXL, AVIF, UltraHDR and OpenEXR. Of those formats, only two have any sort of practicality: AVIF and PNG.

I opted to integrate HDR PNG into ReShade because it has a number of unique advantages, including the ability to paste them directly into Discord and everyone gets an HDR image they can see. There's also an embedded ICC profile that allows browsers and applications like Special K Image Viewer (included with Special K) to tonemap the image to SDR for non-HDR users.

Kaldaien, thank you for trying to improve ReShade! I hope that someday we will see this awesome addition in the official non-addon version.