enricobuehlerandClaude Fable 5
248e1cbf08
Field report (iPad via GameStream, 2026-07-23): cursor missing from the stream. The session's fresh target 257 reported cursor_excluded=false (DECLARED_TARGETS is keyed per target and only 259 had declared), so the host skipped forced-composite — but DWM's pointer exclusion after an IddCx hardware-cursor declare reaches EVERY later monitor of the adapter, not just the declaring target (proven on-glass: declare on 259 under WUDFHost 2192, then 257's frames streamed pointer-free with CURSOR_SHOWING set and SM_MOUSEPRESENT true). GameStream/Moonlight clients cannot draw a forwarded cursor, so those sessions were silently cursor-less. ADD replies now report any-declare-this-WUDFHost-life (the state's real scope — it dies with the adapter reset, same as before); per-target ids stay only as the dbglog audit trail. Channel-less sessions on a declared adapter then hit the existing forced-composite gate (GDI poller + blend) and carry the pointer in-video. Host code unchanged. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
pf-driver-proto
The shared host ↔ driver binary contract for punktfunk's Windows pf-vdisplay virtual display — the control IOCTLs and the IDD-push frame transport, defined exactly once.
It's a path dependency of both the host workspace (crates/punktfunk-host)
and the out-of-workspace driver workspace (packaging/windows/drivers/),
so it must resolve identically from either build graph. That's why it's deliberately self-contained:
no_std (+ alloc), platform-neutral (GUID/LUID are plain integers each side converts to its own OS
type), and free of *.workspace = true inheritance.
Defining every wire struct here — with const size/offset asserts and bytemuck round-trips — turns
host↔driver ABI drift into a compile error instead of a silent frame or IOCTL corruption.
See the crate root (src/) for the wire types; the Windows virtual-display design is in
the internal planning repo (punktfunk-planning: windows-virtual-display-rust-port.md).