wstr! used `const W; W.as_ptr()` which points to a temporary dropped at the end of
the statement (dangling) — fixed to `static W` (stable address). On-glass it did NOT
change the IddCxAdapterInitAsync INVALID_PARAMETER, and a minimal SDR adapter
(Flags=NONE + required callbacks only) fails identically, so the caps content +
callbacks are NOT the blocker (offsets are byte-perfect vs C; sizes match the
framework table; dispatch + device are correct). Config restored to FP16 + full HDR
callbacks. Remaining suspects: IDARG_IN_ADAPTER_INIT layout, the missing DeviceContext
(oracle always sets one), or a box/framework regression.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
IddCxAdapterInitAsync still INVALID_PARAMETER. Logged offset_of! for every
IDDCX_ADAPTER_CAPS + IDDCX_ENDPOINT_DIAGNOSTIC_INFO field on the box: ALL match the
expected C x64 layout exactly (caps Flags=4 MaxRate=8 MaxMon=16 Diag=24 Static=80;
diag Trans=4 Friendly=8 Model=16 Manuf=24 HwVer=32 FwVer=40 Gamma=48). So the wdk-sys
bindgen lays the struct out correctly — NOT a layout bug. The caps are byte-identical
to C + match the framework size table + the oracle, yet rejected. Next: runtime
compare vs the oracle (does it init an adapter on this box now?) + WDK-docs deep-dive.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Major on-glass progress on the RTX box. The all-Rust wdk-sys IddCx driver now LOADS
under Secure Boot and runs the ENTIRE init chain: DriverEntry -> WdfDriverCreate ->
driver_add -> IddCxDeviceInitConfig(0x0) -> WdfDeviceCreate -> CreateDeviceInterface
-> IddCxDeviceInitialize -> D0Entry -> init_adapter. Findings:
- Signing was a RED HERRING (the driver loads); std works in WUDFHost (DualSense uses
it too).
- THE unblock: link the iddcx **1.10** IddCxStub (build.rs now picks the highest
version-aware), not 1.0 — the 1.0 stub lacks the version-table symbols AND its
dispatch table mismatched the 1.10 framework, which made IddCxDeviceInitConfig
return INVALID_PARAMETER. With 1.10 the whole chain runs.
- Added a file/OutputDebugString logger (log.rs, matches the DualSense driver) — the
driver was silent; this is how the chain was traced.
- size.rs: framework_struct_size() reads the frameworks authoritative struct sizes
from IddStructures[] (the config keeps size_of=208, validated working).
- adapter.rs: version ptrs + ObjectAttributes(InheritFromParent) + FP16 + framework
caps/diag/version sizes — matches the oracle.
KNOWN WIP: IddCxAdapterInitAsync still returns INVALID_PARAMETER though caps match
the framework size table (88/56/24) + the oracle exactly — likely a subtle wdk-sys
bindgen field-layout detail in IDDCX_ADAPTER_CAPS/IDDCX_ENDPOINT_DIAGNOSTIC_INFO.
CI gate (compile+link) stays green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
adapter.rs: init_adapter(device) builds IDDCX_ADAPTER_CAPS (CAN_PROCESS_FP16,
MaxMonitorsSupported=16, endpoint diagnostics with wstr! PCWSTR names) +
IDARG_IN_ADAPTER_INIT and calls IddCxAdapterInitAsync; EvtDeviceD0Entry triggers it
(idempotent), EvtIddCxAdapterInitFinished stashes the adapter in a OnceLock for
later DDIs. zeroed()+named-field construction dodges the Default-derive +
field-order questions. Compiles + links clean on the box (pf_vdisplay.dll 268KB).
CI gate = compile+link; the on-glass load/enumerate gate needs the box + an INF +
SwDeviceCreate (next).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
enricobuehler