[PATCH v2 0/1] MR4830: dinput: implement DIPROP_AUTOCENTER

[Tyson Whitehead (＠twhitehead)]

Autocenter is a default effect playing on the device following power up or reset. It is disabled by stopping all effects. On at least some devices (all?) it is a spring effect playing in slot 1. Capturing Windows USB packets reveals it dinput acquire does (1) a reset (this enabled autocenter) and, if autocenter is disabled, (2) a stop all effects (this disabled autocenter).

This logic works regardless of whether autocenter is a spring effect playing in slot 1 or not. It does mean autocenter can only be set when the device is not acquired. Testing on Windows reveals setting autocenter properties while acquired returns DIERR_ACQUIRED even if the device is exclusively acquired, so this is consistent.

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  v2: dinput: implement DIPROP_AUTOCENTER

https://gitlab.winehq.org/wine/wine/-/merge_requests/4830