forked from unom/punktfunk
enricobuehlerandClaude Opus 4.8
cd701a9594
When a second client got its own virtual display mid-stream, the FIRST client's IDD-push stream froze (video only; `new_fps=0 repeat_fps=240` forever). Adding/removing/resizing a sibling display re-commits the CCD topology, which makes the OS unassign+reassign the first monitor's IddCx swap chain. `unassign_swap_chain` dropped the SwapChainProcessor, dropping `run_core`'s local FramePublisher and closing the sealed-channel handles. The fresh worker then polled the frame-channel stash — but that stash is consumed once at session open, and the host only re-delivers on a ring recreate (a descriptor change). The first monitor's descriptor didn't change and WUDFHost stayed alive, so no watchdog fired: the driver drained the swap chain without publishing and the host repeated its last frame indefinitely. Confirmed twice on the .173 box (host.log 21:12 & 21:15). Preserve the live FramePublisher across the flap instead of dropping it: the host-owned ring (header/event/textures) it holds stays valid — only the swap chain died. - frame_transport.rs: FramePublisher records its render-adapter LUID + exposes render_adapter(). - monitor.rs: MonitorObject.preserved_publisher + preserve_publisher() (mirrors set_frame_channel) + take_preserved_publisher() (mirrors take_frame_channel). Monitor teardown drops the stashed publisher and closes its ring handles, so nothing leaks. - swap_chain_processor.rs run_core: after SetDevice OK, re-adopt a preserved publisher ONLY when the new swap chain renders on the same LUID (same pooled Direct3DDevice → its context + opened textures are valid); on loop exit, stash the publisher back on the monitor. Safe: the old worker is fully joined (drop-outside-lock discipline) before the new one runs, so no concurrent context use; a stale re-adopted publisher is superseded by the existing is_stale() + has_frame_channel() newest-wins checks at the loop top. Verified clippy -D warnings clean on rustc 1.96.0 via a faithful mock crate (the real crate needs the WDK to compile). Needs a driver rebuild + reinstall on the host to take effect; not yet hardware-validated. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>