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Logitech G27 update bit 86 shifter_pressed behavior

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Katharine Chui 2025-05-16 15:01:59 +02:00 • committed by Megamouse
parent 5deb0fcbc6
commit c5e40dde74
1 changed files with 10 additions and 2 deletions
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12
rpcs3/Emu/Io/LogitechG27.cpp
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@ -751,8 +751,16 @@ void usb_device_logitech_g27::interrupt_transfer(u32 buf_size, u8* buf, u32 endp
set_bit(buf, 82, true);
// shifter connected
set_bit(buf, 83, true);
// shifter stick down
set_bit(buf, 86, shifter_press);
/*
* shifter pressed/down bit
* mechanical references:
* - G29 shifter mechanical explanation https://youtu.be/d7qCn3o8K98?t=1124
* - same mechanism on the G27 https://youtu.be/rdjejtIfkVA?t=760
* - same mechanism on the G25 https://youtu.be/eCyt_4luwF0?t=130
* on healthy G29/G27/G25 shifters, shifter is mechnically kept pressed in reverse, the bit should be set
* the shifter_press mapping alone captures instead a shifter press without going into reverse, ie. neutral press, just in case there are games using it for input
*/
set_bit(buf, 86, shifter_press | shifter_r);
buf[3] = (steering << 2) | buf[3];
buf[4] = steering >> 6;