Emulator

Can't reproduce. Can you show how you've mapped the controller, which controllers you've tested, and which games you've tested?

I think this is the same issue as #12874. Apparently several 8bitdo controllers are read by Android as an XBox One controller (vendor id 045e and productid 02e0).

The helper class Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/ControllerMappingHelper.java ends up applying the axis rescale fix even though it shouldn't.

As a result, the control stick cannot be properly mapped.

More info about this problem is also being discussed in PR 10795 on GitHub.

Overall, this axis scale issue seems complicated to solve. Some specific XBox controllers require the rescaling and others don't. This might also be influenced by the firmware version of the controller and possibly even the Android version.

IMHO, the ideal solution here would be to have Dolphin ask the end user to move the stick to the left AND to the right. Then Dolphin could see if the range being read is -1 (+ some epsilon) to +1 (- some epsilon). If the range is different than this (such as the one reported by some XBox One and Dualshock controllers), than Dolphin could apply the scale fix in the fly, automatically. Another option is to never apply scale fixes and let the user select this fix in the UI in case he's not able to map the controller. Anyways, my 2 cents... Hope this helps

Sorry, meant to say issue #12711

@JosJuice

Could you test if this is working properly in the input overhaul pull request?

Pull request: https://github.com/dolphin-emu/dolphin/pull/11385
APK: https://dl.dolphin-emu.org/prs/b0/82/pr-11385-dolphin-latest.apk