Make the virtual gamepad deployable on owned cabinets and wire the real user-mode feeder: - driver/sign.ps1 (non-admin): create a self-signed code-signing cert, build the catalog with inf2cat, and SHA-256-sign RioGamepad.sys + .cat (embed-sign the sys before cataloguing so the .cat matches). Exports RIOJoyTest.cer. Verified end-to-end against the EWDK (signability + catalog clean; both files signed). - driver/install.ps1 (admin, two-phase): trust the cert (LocalMachine Root + TrustedPublisher), stage the package (pnputil /add-driver), enable test signing; after reboot, -CreateDevice runs devgen to create root\RioGamepad so PnP installs it. uninstall.ps1 reverses it. - RioJoy.Core.Output.HidFeederJoystickSink: opens the driver by GUID_DEVINTERFACE_RIOGAMEPAD (SetupAPI), maintains a RioHidReport, and submits it via DeviceIoControl(IOCTL_RIO_SUBMIT_REPORT) on each axis/button/hat change. RioCoordinator now uses it when the driver is present and falls back to the no-op sink otherwise (status shows "[no joystick driver]"). - gitignore the signing outputs (driver/package/, *.cat); driver/README.md gets the full build → sign → install → joy.cpl workflow. Remaining = the actual elevated install + reboot + joy.cpl verification on the cabinet (admin steps), and on-hardware confirmation of the feeder. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
RioGamepad — virtual HID driver
The RioGamepad virtual HID device replaces the legacy vJoy dependency. It
is a KMDF driver built on the Windows Virtual HID Framework (VHF, vhf.sys)
that presents a single HID game controller to Windows matching the layout the
old app drove through vJoy:
| Report field | Count | Notes |
|---|---|---|
| Axes | 6 | X, Y, Z, Rx, Ry, Rz — 16-bit |
| Hat switch | 1 | 4-direction POV with null state |
| Buttons | 96 | 12 bytes of button bits |
The C# tray app feeds input reports to the driver through a custom
DeviceIoControl IOCTL on the driver's control device; the driver relays them
to Windows via VhfReadReportSubmit.
Status
Phase 1 — implemented and compiling. The driver source under
RioGamepad/ builds cleanly to RioGamepad.sys against the EWDK
(KMDF 1.15 + VHF, x64). It is a thin VHF relay: it creates the virtual HID device
from the report descriptor and, on each IOCTL_RIO_SUBMIT_REPORT, forwards the
caller's 25-byte report to VhfReadReportSubmit. All report packing lives in the
C# client (RioJoy.Core.Hid.RioHidReport, unit-tested) so the wire format is
pinned on both sides (RioGamepad/Public.h).
Not yet done: test-signing + install + verify in joy.cpl (the on-cabinet
step), and wiring the real DeviceIoControl feeder sink (replacing the C# side's
NullJoystickSink).
Building
With the EWDK mounted (e.g. drive E:), from this folder:
RioGamepad\build.cmd E:
This sources the EWDK env (<EWDK>\BuildEnv\SetupBuildEnv.cmd) and runs MSBuild,
producing RioGamepad\x64\Release\RioGamepad.sys. The project is a WDK/MSBuild
.vcxproj; it is not part of RioJoy.sln (different toolchain).
EWDK note: the build disables the managed catalog task (
/p:DriverCatalog_Enable=false) and auto-signing (/p:SignMode=Off). On this EWDK image the in-buildDrvCattask can't loadMicrosoft.Kits.Logger, so the.catis produced separately withinf2cat.exeand signed withsigntool.exeas part of install (below), rather than during compilation.
Test-signing & install (cabinets you own)
Scripts in this folder automate the test-signing flow. Steps marked (admin) need an elevated shell; everything else is non-admin.
:: 1. Build the driver (non-admin), EWDK mounted at E:
RioGamepad\build.cmd E:
:: 2. Test-sign: makes a self-signed cert, builds + signs the .cat and .sys,
:: and exports RIOJoyTest.cer (non-admin)
powershell -ExecutionPolicy Bypass -File sign.ps1 -Ewdk E:
:: 3. (admin) Trust the cert, stage the driver, enable test signing
powershell -ExecutionPolicy Bypass -File install.ps1 -Ewdk E:
:: 4. REBOOT (test signing only takes effect after a restart)
:: 5. (admin) Create the device; PnP then installs the staged driver
powershell -ExecutionPolicy Bypass -File install.ps1 -Ewdk E: -CreateDevice
Then open joy.cpl and confirm "RIOJoy Virtual Gamepad" appears with 6
axes / POV / 96 buttons. To roll back: uninstall.ps1 [-DisableTestSigning] [-RemoveCert].
The signed package (package/) and the exported cert are local artifacts and are
git-ignored. Redistribution beyond owned hardware would instead use Microsoft
attestation signing via Partner Center (see ../docs/PLAN.md,
Phase 6).
The user-mode side opens this device by GUID_DEVINTERFACE_RIOGAMEPAD and feeds
reports via IOCTL_RIO_SUBMIT_REPORT — implemented by
RioJoy.Core.Output.HidFeederJoystickSink, which the tray app uses automatically
when the driver is present (falling back to a no-op sink when it is not).