Are there any packages available to do what auto-HDR does on Windows*? It’ll be pretty limited if not - HDR support in games is still quite disappointing on PC.
*ideally better - my own experience of Windows auto-HDR hasn’t been great, although others seem to have a good time with it
No. HDR is really something that Valve added. I’m sure there was an attempt before, but it didn’t get very far. KDE is currently in the process of adding HDR to the desktop.