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Added the CRC of the joystick name to the GUID

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This will make it possible to have mappings for different controllers
that have the same VID/PID. This happens frequently with some generic
controller boards that have been reused in many products.

Fixes https://github.com/libsdl-org/SDL/issues/6004
This commit is contained in:
Sam Lantinga
2022-08-22 16:46:55 -07:00
parent 20715fa014
commit c1e0873940
21 changed files with 179 additions and 117 deletions
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2
src/joystick/windows/SDL_windows_gaming_input.c
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@@ -320,7 +320,7 @@ static HRESULT STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_InvokeAdde
/* FIXME: Is there any way to tell whether this is a Bluetooth device? */
*guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_USB);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(SDL_crc16(0, name, SDL_strlen(name)));
*guid16++ = SDL_SwapLE16(vendor);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(product);