Better support for secondary stick in DirectInput driver #1463
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I've updated the PR. Disclaimer: I've absolutely no real experience or knowledge of DirectInput. All I know for sure is that this patch makes my Stadia controller (and some others I have) correctly detect the second stick. Also, I've been shipping this in https://github.com/ZQuestClassic/ZQuestClassic/ for a couple years now and haven't heard any issues. But I highly recommend asking someone with more experience w/ DirectInput to double check this. |
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As referenced here: #1462 (comment)
This patch fixes detection of the secondary thumbstick. I tested on two devices: a PS4 Dualshock, and a Stadia controller.
The code assumed that Rx, Ry, Rz will always be what maps to the secondary stick. However, that apparently was too hard for controller manufacturers to do. For example, my above mentioned controllers use Z and Rz for the second stick. Short of including a database of controller mappings, this patch introduces a heuristic to guess how to map to a secondary stick.
The idea for the solution came from https://www.gamedev.net/forums/topic/613913-directinput-identifying-second-thumbstick/
happens to fix #1700