Files
riojoy/driver/RioGamepad/RioGamepad.vcxproj
T
CydandClaude Opus 4.8 24cdf495e3 Phase 1: RioGamepad virtual HID driver (KMDF + VHF) + C# report packer
Author the custom virtual HID gamepad that replaces vJoy, and pin its wire
format on both sides. Builds clean to RioGamepad.sys against the EWDK
(KMDF 1.15 + VHF, x64, warnings-as-errors).

driver/RioGamepad/:
- ReportDescriptor.h: 6x16-bit axes (X,Y,Z,Rx,Ry,Rz), one 4-direction hat with
  null state, and 96 buttons — the legacy vJoy layout. 25-byte input report.
- Device.c/Driver.c: KMDF root-enumerated device that creates the VHF virtual HID
  device (VhfCreate in DeviceAdd, VhfStart in D0Entry, VhfDelete on cleanup) and
  exposes a device interface + IOCTL_RIO_SUBMIT_REPORT that forwards the caller's
  report bytes to VhfReadReportSubmit. Thin relay: no report logic in the kernel.
- Public.h: device-interface GUID, IOCTL, and the report byte layout shared with
  the C# client. RioGamepad.inf + build.cmd (EWDK build, catalog/sign disabled).

src/RioJoy.Core/Hid/RioHidReport.cs: packs AxisOutputs + hat + 96 buttons into
the exact 25-byte report (LE axes, hat nibble with 0x0F=centered, button bitmap).
13 new xUnit tests (136 total).

Remaining (deploy-side): test-sign + pnputil install + verify in joy.cpl, and
wire the real DeviceIoControl feeder sink (replacing NullJoystickSink). The
EWDK's in-build catalog task (DrvCat) can't load Microsoft.Kits.Logger on this
image, so the .cat is produced with inf2cat/signtool at install time instead.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-26 21:06:16 -05:00

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