DualSense analog triggers unresponsive in Android RetroArch, PS4 controllers unaffected

Description

The Sony DualSense controller's analog triggers (L2/R2) are non-functional in RetroArch for Android. This issue affects pressure-sensitive controls in games and the Remote RetroPad feature. The analog trigger values should range from -10 to +10, but no input is registered regardless of configuration attempts. This problem is specific to the DualSense and does not occur with PS4 controllers.

Expected Behavior

• Analog triggers should provide pressure-sensitive input
• Values should range from -10 to +10
• Input should be recognized in Remote RetroPad

Actual Behavior

• No input is registered from analog triggers
• Issue persists across various configuration attempts
• Problem affects gameplay and testing tools

Steps to Reproduce

Pre-testing:

1. Test the L2/R2 triggers in any gamepad testing app outside of RetroArch
2. Confirm that the analog triggers function correctly in these tests
3. This verification establishes that the issue is specific to RetroArch and not a hardware problem

RetroArch testing:

1. Set the autoconfig directory to: /storage/emulated/0/RetroArch/autoconfig/
2. Generate /storage/emulated/0/RetroArch/autoconfig/android/DualSense Wireless Controller.cfg
3. Modify DualSense Wireless Controller.cfg by changing the L2/R2 configuration from buttons to axes since RetroArch cannot do this:

input_l2_axis = "+1"
input_r2_axis = "+2"

4. Restart RetroArch and test using "Start Remote RetroPad"
5. Repeat with different axis values (both positive and negative)

PS4 controller (control)

This section demonstrates that Remote RetroPad is working with L2/R2 analog pressure testing in Android.

RetroArch testing.

1. Plug a PS4-controller
2. Test the L2/R2 triggers in any gamepad testing app. They are working.
3. Use the provided autoconfig: https://github.com/libretro/retroarch-joypad-autoconfig/blob/f7a398e6ebd7c62aeebb932668295f76882db824/android/Wireless%20Controller.cfg
4. Restart RetroArch and test the analog trigger using "Start Remote RetroPad"
5. The rectangles on L2/R2 should indicate that they are working

Additional Information

• Tested axis values from -10 to +10
• Issue persists across RetroArch restarts
• May be related to RetroArch's handling of mixed input types

Version Information

• RetroArch: 1.19.1, 1.20.
• OS: Android

Hardware

Sony DualSense Wireless Controller

Notes

• Affects games relying on analog triggers (e.g., GameCube, Dreamcast)
• Problem likely related to RetroArch's input handling, not specific cores
• Manual configuration attempts have been unsuccessful

Reproduce the issue on Android with a Sony DualSense, first verifying L2/R2 in an external gamepad testing app. Then inspect the generated android/DualSense Wireless Controller.cfg and test the listed axis mappings through Start Remote RetroPad, comparing the result with the provided PS4 controller configuration. Done means the DualSense triggers report analog values from -10 to +10.