fix(pf-vdisplay/driver): report cursor_excluded adapter-wide — the declare's exclusion is not per-target

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>
2026-07-23 15:58:54 +02:00
parent 35c2c1450e
commit 248e1cbf08
4 changed files with 39 additions and 29 deletions
@@ -165,9 +165,11 @@ unsafe fn add(request: WDFREQUEST) {
        // This WUDFHost's pid — where the host duplicates the sealed frame channel's handles INTO
        // (`ProcessSharingDisabled`: this process is exclusively ours and dies with the device).
        wudf_pid: std::process::id(),
-        // The target already carries an irrevocable hardware-cursor declare from an earlier
-        // session — a channel-less session must self-composite the pointer (§8.6 gap).
-        cursor_excluded: crate::monitor::target_declared(target_id) as u32,
+        // The ADAPTER already carries an irrevocable hardware-cursor declare from an earlier
+        // session — DWM's exclusion reaches every later monitor, not just the declaring target
+        // (on-glass 2026-07-23: declare on 259 left a fresh GameStream 257 cursor-less) — so a
+        // channel-less session must self-composite the pointer (§8.6 gap, adapter-wide).
+        cursor_excluded: crate::monitor::any_declared() as u32,
    };
    // Dual-size reply (the `cursor_excluded` tail ext): an un-upgraded host retrieves only the
    // legacy 20-byte buffer — write the prefix it asked for instead of failing its ADD.