Hall Effect Sticks dont read Diagonals at full range

[RinMaru]

Bug Description

Ive recently gotten a Hyperkin DuchesS Wired controller and in some games like Ty the Tasmanian Tiger for instances the Diagonals aren't in full range. this is not an issue with standard potentiometer gamepads

Games Affected -
Ty the Tasmainian Tiger
Grand Theft Auto 3
Grand Theft Auto Vice City
Grand Theft Auto San Andreas
Crash Bandicoot The Wrath of Cortex

Expected Behavior

Ty Should keep a running pace while moving diagonally instead of slowing to a walking pace

xemu Version

All versions v0.8.10

System Information

Windows 11 24H2
RX 6700XT 12GB
20GB DDR4 RAM
Ryzen 5 5600X

Additional Context

No response

[BiatuAutMiahn]

I noticed this with GTA: Vice City

[FireBlast07]

I have this problem with Crash Tag Team Racing, both on a gamepad with hall effect and potentiometer

[RinMaru]

I have this problem with Crash Tag Team Racing, both on a gamepad with hall effect and potentiometer

if its both than its probably a diff issue

[RinMaru]

libsdl-org/SDL#12067
This wont be fixed on their side so the only way to fix this is have some sort of calibration in xemu i guess

[faha223]

Can you test the circularity of your sticks?
https://hardwaretester.com/gamepad

Go here and check the "Test Circularity" checkbox in the bottom right corner, and then move your sticks in a circle and take a screenshot. Here's one I did with one of my Xbox Series S controllers

[RinMaru]

Can you test the circularity of your sticks? https://hardwaretester.com/gamepad

[faha223]

I realized it'd probably be better to show data from an actual Xbox Controller, so here's what it looks like with my Xbox Controller S through a USB adapter

[RinMaru]

I realized it'd probably be better to show data from an actual Xbox Controller, so here's what it looks like with my Xbox Controller S through a USB adapter

So I guess Xemu is expecting stronger values and not a perfect circle?

[faha223]

I don't think this is a bug in Xemu, or in SDL for that matter. I think this would be more appropriate as a feature request. As you can see from the screenshots I sent, the output data even of an Xbox Series controller is significantly more circular than that of an original Xbox controller. This would be beneficial for a lot of different controllers.

I think the best approach to solve this would be to introduce a global scaling factor for each stick where it just scales the output range by a number ranging from 50% to 150%, defaulting to 100% for no change. It would still be clamped to the normal range though so you wouldn't magically just be able to run faster.

A workaround that might work for you for now would be to use something like Joystick Gremlin to map your controller as-is to a virtual gamepad, but with axis curves defined for the joystick axes such that it scales the output the way you want. Then you could use the virtual gamepad in Xemu.

[maxymax13]

would it be possible to implement a joystick correction feature similar to Dolphin, where you spin the sticks around and it maps any controller's max ranges to the expected max ranges of a gamecube/wii controller

[RinMaru]

Thats what SDL suggested themselves. Or wait for a firmware update so Hyperkin can make it work. Dont think they will make a update for this.

[BiatuAutMiahn]

I noticed this with GTA: Vice City

Apologies for the misinformation, this was noticed using the analog sticks on my Xbox One Controller