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>
enricobuehler
5fc06247b7