Commit Graph
100 Commits
Author SHA1 Message Date
enricobuehlerandClaude Opus 5 69bc92afed fix(vdisplay/mutter): a create timeout no longer abandons the session thread with the desktop dark
`create` gave up after 45 s and dropped its `stop` flag WITHOUT setting it — the
`StopGuard` that owns the only `store(true)` was built on the success path only. The
thread meanwhile discarded its own send failure with `let _ =`, so it sailed past the
dead channel, made the virtual output PRIMARY, and parked in `while !stop` for the
rest of the process's life holding the D-Bus connection that IS the monitor's
lifetime. Its teardown was unreachable.

Under the default topology that orphan applies a SOLE-monitor APPLY_TEMPORARY config.
Every physical head goes dark, and Mutter reverts such a config only once the virtual
monitor disappears — which the parked thread prevents. There is no in-process
recovery: each retry adds another orphan and another virtual monitor.

The other three portal/D-Bus backends never had this — kwin.rs, hyprland.rs and
wlroots.rs all `?` on that exact send. Mutter is now the same shape, via a shared
`report_node` that stops the session when the opener has gone. Two more layers behind
it, because the send can also LAND in the moment `recv_timeout` gives up: `create`
and `stream_existing_output` build their guards BEFORE the wait, so every error arm
signals the thread on its way out, and the thread re-checks the flag before it touches
topology — so a doomed session never applies a sole-monitor config at all, rather than
applying one and reverting it a tick later.

The fix lands once because the duplication that caused it is gone first: `connect` and
`connect_monitor` shared ~72 verbatim lines, and the mirror path repeating the session
path's `let _ = send` is precisely what that copy bought. Both now share `open_rd_sc`
(steps 1-2) and `start_and_await_node` (step 4).

Also stops a physical hotplug stealing the virtual monitor's identity.
`wait_virtual_connector` took "any connector absent from the pre-snapshot" across a
window spanning a ~10 s stream wait plus 6 s of polling; TOPOLOGY_LOCK keeps sibling
sessions out of it but a hotplug is not ours to serialise, and the session's topology
apply and scale persistence would then be aimed at the operator's new panel. It now
prefers the connector advertising the client's exact WxH — the discriminator
`make_virtual_primary` already matches on — falls back to the old behaviour when that
singles nothing out, and warns when more than one candidate appears.

Tests: `pick_virtual` split out of the polling loop so the choice is testable without
a session bus. Verified on Linux (192.168.1.25): 99 passed, and the hotplug case FAILS
against the old first-new-connector logic, so it is not vacuous.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:45:11 +02:00
enricobuehlerandClaude Opus 5 e7dc7e9d18 fix(win-display): every CCD/GDI operation now carries a proof, not just the blocks that needed one
Companion to c16f2850, which closed the same hole in pf-vdisplay. The file header
claims "Every `unsafe` block in this file carries a `// SAFETY:` proof", and that
was true — it just did not cover the 84 unsafe OPERATIONS sitting directly in
`unsafe fn` bodies, which under edition 2021 need no block and so carry no proof.
That is the whole CCD surface: every QueryDisplayConfig, every SetDisplayConfig,
every DISPLAYCONFIG union read.

Rather than 84 restatements of the same argument, the shared contract is stated ONCE
at the top — how the buffer-size/query pair keeps pointer and count in agreement, and
why the two obligations the compiler cannot see (arrays only ever come from the OS or
from a SavedConfig this module built; SetDisplayConfig serialised under the manager
`state` lock and bound to the input desktop) hold at every site. Per-site comments
then name the site-specific fact instead of repeating the invariant.

The union reads justify differently and the header says so: `modeInfoIdx` and
`ADVANCED_COLOR_INFO.value` overlay same-sized POD, so no discriminant can be got
wrong, while `MODE_INFO.Anonymous.sourceMode` IS discriminated by `infoType` — and
every read of it is guarded by that check. Writing that down found the one place the
guard does NOT gate the read: the `then_some` in set_virtual_primary_ccd evaluates
eagerly, so POD-ness is what carries it there, not the check. The comment says so
rather than implying a guard that is not doing the work.

Two shape changes, both deliberate. `wait_mode_settled`'s two calls are nested rather
than `&&`-joined so the second CCD query stays short-circuited — it polls every 25 ms
and must not run while the target has no active path. And the eager union read in
`set_virtual_primary_ccd` is hoisted to a `let` so its proof has somewhere to attach;
`then_some` already evaluated it eagerly, so nothing changes.

Union field ASSIGNMENTS are safe in Rust — only reads are — so two of them keep no
block. Verified on the Windows CI runner: clippy -D warnings clean across pf-frame,
pf-win-display, pf-capture and pf-vdisplay, and both crates' tests pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:45:11 +02:00
enricobuehlerandClaude Opus 5 6782aa0054 fix(vdisplay): stop the suite reporting ok for tests that never ran, and let clippy see the KWin backends
Three coverage holes, all of the same shape — a gate that looks green because
nothing is behind it.

The Windows half (~3,400 lines) had no executed tests. Its only two `#[test]`s
opened with `if env::var("PUNKTFUNK_PF_VDISPLAY_LIVE").is_err() { return; }`, so
without the hardware they passed without running, and no CI job compiled the
crate's test targets at all — `-p punktfunk-host` builds pf-vdisplay as a
dependency, which never reaches a `#[cfg(test)]` module. Both live tests are
`#[ignore]`d now (an unrun hardware test should say `ignored`), and windows-host.yml
gains the `--all-targets` lint plus a real test step. The link question that keeps
the host and pf-encode on clippy-only does not apply: pf-encode is `default = []`
and nothing here turns on nvenc/amf-qsv/qsv. Settled on the runner to the same
standard as pf-capture's step — 46 passed, 2 ignored.

`#![allow(clippy::all, ...)]` at the top of kwin.rs and kwin_output_mgmt.rs was
meant for wayland-scanner output, but the generated modules already carry their own
copy of that attribute — so the file-level one was only ever silencing 2,366 lines
of hand-written backend, with `clippy::correctness` (deny-by-default) among the
casualties. Dropping it found a dead match arm in the `kde_output_configuration_v2`
dispatch; that one is now exhaustive on purpose, so a re-vendored XML that adds an
event fails the build instead of dropping it silently. (The sibling `_ => {}` in the
DeviceMode dispatch is NOT dead — `ModeEvent::Removed` really does reach it and get
swallowed, which is a separate defect.)

`dead_code` is now enforced on Linux, where ~10k of the ~17k lines live, instead of
allowed crate-wide behind a rationale that had stopped being true. It turned up no
genuinely dead code: four items, every one live from tests or another platform, now
annotated with which. One deserved the comment most — `Entry::keepalive` is "never
read" because it is an RAII guard whose `Drop` releases the compositor output, so
deleting it as unused would release every pooled display the moment it was created.

Two tests were not testing what they claimed. `another_uids_socket_is_ignored`
asserted the sway-socket ownership guard but never reached it — `find_sway_socket`
filters on the `sway-ipc.<uid>.` filename prefix first, so the foreign-uid file was
rejected by name and the assertion held even with `md.uid() != uid` deleted. It is
renamed to what it does cover, and the real leg is a new `#[ignore]`d root test that
chowns a correctly-named socket (querying with a non-matching pid, or the exact-path
shortcut would return before the guard and make it vacuous all over again). And
proc.rs's tests were ungated while the module is compiled everywhere, so they would
have gone red on Windows the first time anyone ran them: `#[cfg(all(test, unix))]`
now, with a `cmd /c` twin that does run there.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:45:11 +02:00
enricobuehlerandClaude Opus 5 995cac5d03 fix(vdisplay): the three hardest FFI calls were exempt from the crate's own unsafe-proof rule
`#![deny(clippy::undocumented_unsafe_blocks)]` cannot see an unsafe operation that
sits directly in an `unsafe fn` body — in edition 2021 `unsafe_op_in_unsafe_fn` is
allow-by-default, so a bare call inside such a body needs no block and therefore
carries no proof. The file headers claim "every unsafe block carries a SAFETY
proof", and that was true; it just did not cover the calls that needed it most.

Turning the lint on named exactly three: `DeviceIoControl` and the `ioctl` wrapper
in pf_vdisplay.rs — the whole host<->driver control channel — and
`restore_displays_ccd` in manager.rs, the call the teardown path depends on to give
the operator their physical panels back. Each now carries a real proof, and `ioctl`
and `set_render_adapter` grew the `# Safety` heading their callers were owed.

Also teaches scripts/wincheck.sh to cover pf-vdisplay, which is what let the above
be compile-verified rather than reasoned: the crate's Windows half is ~3,400 lines
that Linux CI never compiles. That needed a stub pf-encode (the real one drags
ffmpeg-sys, and the admission gate calls exactly one predicate from it) and
CompositorPref on the stub core. Verified non-vacuous with a planted type error.

pf-win-display's half of the same lint is a separate change — it flags 62 further
operations, and they want proofs written one at a time, not in bulk.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:45:11 +02:00
enricobuehlerandClaude Opus 5 9b38b6a22d feat(stats): a capture records which encoder and GPU produced it
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The stage split is the thing an fps-shortfall report is diagnosed from, and
it cannot be read without knowing the backend behind it: a p50 `submit` of
10 ms means "the GPU's CSC+encode throughput is the ceiling" on one backend
and something else entirely on another. The capture's meta carried the mode,
codec and client but neither the encoder nor the GPU, so every report so far
cost a round-trip asking which one it was.

Both come from `pf_gpu::active()` — the record the encoder open itself
writes — so they name the branch that really opened rather than a re-derived
guess that goes stale the moment a backend gains an internal fallback. Read
once per capture, not per frame.

The console shows them next to the mode in the recording's header. Both
fields are `serde(default)`, so a recording made before this still loads and
simply omits them.

Refs #9

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:14:10 +02:00
enricobuehlerandClaude Opus 5 eb4ab91627 feat(host): a frame limiter for the game, not for the stream
PUNKTFUNK_MAX_FPS caps how fast the compositor lets the game render. It
deliberately does NOT touch the session: the client still negotiates and
receives its full rate, because the encode loop re-encodes the held frame
whenever the compositor produced no new one, and a repeat of an unchanged
picture is an almost-empty P-frame. So a 60-capped game on a 120 Hz session
still puts 120 frames a second on the wire — and the GPU time the game gives
up goes to capture and encode instead, which is the point (on a laptop or a
handheld, it goes to heat and battery too).

Capping the stream would be a different and mostly unwanted feature: it
hands the client fewer frames than it asked for and saves the game's GPU
nothing.

gamescope is the compositor that has the lever, so it is the one that gets
it: the rate becomes --nested-refresh, which is what gamescope clamps the
game to. All three sessions we own take it — the bare spawn's -r, the
managed gamescope-session-plus wrapper's PF_HZ, and the SteamOS PATH shim's.
In the managed path the limit lands on PF_HZ alone and NOT on
CUSTOM_REFRESH_RATES, so the mode the session advertises stays the client's
— that is what makes games see the real refresh rather than the box's EDID.

Two scoping notes. Under gamescope the cap is the nested output's rate, so
everything it composites moves at it, not the game alone; there is only the
one output. And the attach path (PUNKTFUNK_GAMESCOPE_NODE) mirrors a
gamescope we do not own, so it has no lever to pull and is untouched.

Closes #13

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:14:10 +02:00
enricobuehlerandClaude Opus 5 86b605f01f feat(host): run the virtual display faster than the stream needs
PUNKTFUNK_VDISPLAY_HZ_MULT runs the virtual display at a multiple of the
session's rate without putting one extra frame on the wire. A compositor
paints on its own vblank, so a frame finished just after the capture sampled
waits nearly a full interval to be picked up — the jittery part of the
latency budget, not the steady part; at 2 that worst case halves. It costs
the compositor and GPU the extra composites, so it stays opt-in at 1.

The pacing rate was previously just "whatever the backend achieved". It is
now the session's rate floored by the achieved one — the same value as
before whenever the knob is unset, and the only correct answer when it is
set: never above what the client negotiated, never above what the display
actually produces. Both build sites get it, the initial build and the
in-place resize, so a mid-stream resize can't silently drop back to 1x.

A backend that won't give the multiplied rate now says so at info rather
than warn, since that is the expected outcome of an opt-in knob; falling
short of the SESSION's own rate still warns, because that one costs the
client frames.

Closes #14

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:13:19 +02:00
enricobuehlerandClaude Opus 5 a4aa89be31 fix(decky): drive a native client install, not only the flatpak
Every headless call went through `flatpak run io.unom.Punktfunk`, and the
launch wrapper exec'd the same. On a Deck whose client came from a sysext, a
.deb/rpm, an AUR build or a nix profile there is no such app: discovery
worked (it is mDNS), and everything that needed the client — pairing, the
library fetch, the host store, the stream launch itself — failed.

Resolve the client once. The flatpak still wins when it is actually
installed, so an existing Deck is byte-for-byte unchanged, and a native
`punktfunk-client` is the fallback; `PF_DECKY_CLIENT` forces one on a machine
with both. Both kinds share ~/.config/punktfunk — the flatpak's sandbox HOME
is the real home — so identity, known-hosts and settings need no divergence.

The wrapper takes the resolved binary as PF_CLIENT_BIN and execs it in place
of `flatpak run`; kill_stream sends a name-matched SIGTERM where there is no
flatpak instance to kill; and the client-update check, which reads the
flatpak's tracked remote, simply reports nothing for a native install, whose
updates belong to whatever installed it.

Installed-ness is now decided by the app's exported directory rather than by
the presence of the `flatpak` binary, so a machine that has flatpak but not
this app no longer resolves to a client that cannot run.

Closes #11

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:13:19 +02:00
enricobuehlerandClaude Opus 5 f98547c41f fix(web-console): the paired-clients card counts both pairing planes
GameStream and native (punktfunk/1) clients pair into separate stores, and
`/status` only ever reported the GameStream certificate count. Native is the
DEFAULT plane, so a host whose clients had all paired normally — and which
Moonlight had never touched — showed "0 paired" on the dashboard.

Report the native count alongside it, the way the tray's own summary route
already does, and sum the two in the card.

Closes #10

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:13:19 +02:00
enricobuehlerandClaude Opus 5 198b1d5e80 fix(apple): iPad mouse buttons, held-key repeat, and the scroll direction
Three separate things an iPad's keyboard and mouse got wrong.

Every mouse button past the first two clicked LEFT on the host. UIKit's
button mask is 1-based over the HID order, and only `.secondary` was read —
middle, back and forward all fell into the `else` and became button 1. Map
3/4/5 through `.button(_:)`; only middle and right swap places, because the
wire numbers them the other way round.

Holding a key deleted exactly one character. GameController reports a key
once on press and once on release — it has no repeat channel — and the host
injects exactly what it is told, so nothing downstream ever turned a held key
into a stream of presses. Generate the repeat client-side at the usual
delay-then-rate, newest key only, with modifiers and lock keys excluded.
macOS was never affected: NSEvent hands it the window server's own repeats.

Scrolling ignored the system's Natural Scrolling switch. UIKit has already
applied that preference by the time it hands over a pan translation — it is
what makes every UIScrollView on the device turn the right way — so negating
y pinned the stream to traditional scrolling and inverted the setting for
everyone on the default. Pass the sign through, exactly as the macOS path
passes `NSEvent.scrollingDeltaY` through, and let that one recognizer own
scroll under pointer lock too: it is the only way trackpad two-finger
scrolling ever arrives, so gating it on the lock had been dropping it
entirely there, and the raw GameController axis it deferred to carries no
such preference. iOS installs no GCMouse scroll handler now, so nothing
double-sends; tvOS, which has no scroll pan, keeps it.

Closes #7, closes #15

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:13:19 +02:00
enricobuehlerandClaude Opus 5 580ea0d338 fix(android): a mouse's side buttons work even when they arrive as keys
Not every mouse reports back/forward the same way. One that carries them on
the HID button page (BTN_SIDE/BTN_EXTRA) gets BUTTON_BACK/BUTTON_FORWARD in
the motion button state, which is the only shape the forwarder listened for.
A mouse that carries them on the consumer page (AC Back / AC Forward — the
common Bluetooth shape, and what Android TV boxes tend to see) produces only
synthesized KEYCODE_BACK/KEYCODE_FORWARD, and those were swallowed outright
to stop them doubling as Android navigation. On that hardware both side
buttons were simply dead.

Route the key shape into the same wire buttons, deciding by the DEVICE (it
has to be able to be a mouse) rather than by the event's source, since the
consumer-page collection is a separate sub-device that may be stamped
SOURCE_KEYBOARD. A D-pad-capable device is excluded so an air-mouse remote's
BACK stays the couch user's way out of the stream.

Both paths now funnel through one press/release helper whose held-set guard
collapses a device that reports BOTH into a single wire press.

Closes #8

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 19:13:19 +02:00
enricobuehlerandClaude Opus 5 2f39e15e88 fix(ci): the shader drift gate never ran — dash has no process substitution
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`diff <(spirv-dis …) <(spirv-dis …)` is bash syntax, and Gitea's runner executes
a step's `run:` under `sh -e`. dash rejected the script at PARSE time, so the
gate compared nothing — and, being step 2 of the `rust` job, it took Format,
Clippy, Build, Test, the feature-gated encode backends, the C ABI harness and
the committed-header check down with it. Every one of those has been skipped on
the 35 commits between the gate landing (143a707f) and this one.

A gate that cannot run looks exactly like a gate that passes, which is the
precise failure mode it was written to prevent.

Disassemble to files instead. That is dash-clean without depending on whether
act_runner honours a `shell: bash` override, which is the other way to fix it
and the more fragile one.

Verified in CI's own container (ubuntu:resolute, glslang 16.2.0, spirv-tools
2026.1) by running the step body extracted from this YAML under `sh -e`: it
passes on the current tree, and — the half worth checking — it still FAILS on a
deliberately corrupted blob, so it is not passing vacuously.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 18:28:29 +02:00
enricobuehlerandClaude Opus 5 4065b5bd03 docs(gamescope): the missing cursor was never the whole story
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"The mouse cursor isn't included in the captured image" sat in Known Limits
contradicting the section above it, which already explained that the host draws
the pointer back in. Both are half-true and the difference matters to a reader
choosing whether to install anything: gamescope does leave the pointer out, you
do still see one, and what it costs is a full pass over every frame — plus, on
the fastest encode paths, the pointer itself, because a fixed-function front
end has nowhere to blend it.

Which is the real argument for `punktfunk-gamescope` on a box that will never
turn HDR on, and the page never made it.

Release notes gain the spawn-flag verification and the packaging wiring.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 18:03:30 +02:00
enricobuehlerandClaude Opus 5 c801465469 fix(packaging): every channel that ships punktfunk-gamescope now builds it
The docs already told users where to get it — the Bazzite sysext, an Arch
package, a NixOS option — and none of the three were true. `rpm.yml` built the
sysext without ever passing `--gamescope`, `arch.yml` did not know the PKGBUILD
existed, and the nix derivation had never been evaluated once.

Evaluating it found its central assumption wrong: `gamescope.unwrapped` does
not exist on current nixpkgs, where `gamescope` IS the buildable derivation, so
the override threw on every build. It now prefers `.unwrapped` where a future
nixpkgs wraps it and checks the RESULT is patchable — `overrideAttrs` on a
symlinkJoin succeeds and does nothing, which would install an UNPATCHED
gamescope under a name the host reads as a promise of HDR.

Both it and the PKGBUILD had also drifted to a stale patch list: two patches
named where three exist, one of them under the level-1 filename retired when
the cursor patch landed. Both read the patch directory now, so the list cannot
go stale again. The PKGBUILD additionally delegates the whole build to
`build-punktfunk-gamescope.sh` rather than re-deriving the meson invocation —
its copy had already lost `force_fallback_for=wlroots`, and unlike Fedora 43,
Arch ships wlroots, so that package would have linked it shared and shipped a
binary that starts only on machines carrying the dev library. It asserts its
own pinned rev matches the script's, the one thing makepkg needs statically.

Both CI builds are cached on `packaging/gamescope/**`, which is the only reason
this is affordable: that tree depends on nothing else in the repo, so a normal
push restores a binary instead of spending ten minutes on someone else's C++.
And both are best-effort. punktfunk works without this binary — SDR on the
gamescope backend, which is what every release before this one did — so a
hiccup building gamescope must not cost the packages those workflows exist to
publish. A failure warns and is never cached, so the next run retries.

`rpm.yml` also installs Fedora's own gamescope for its runtime libraries: the
sysext verifies our binary by executing `--version`, and on a cache hit nothing
else in the job would have pulled libavif/luajit/seatd in.

Verified by evaluating and patch-phase-building the nix derivation against
nixos-unstable: all three patches apply to nixpkgs' already-patched 3.16.25
tree, and the banner stamps +pfhdr2.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 18:03:30 +02:00
enricobuehlerandClaude Opus 5 0c4e582b29 fix(gamescope): a managed session now proves our flags reached it
The bare spawn builds gamescope's argv itself. The two managed modes hand the
flags over indirectly — `gamescope-session-plus` through `GAMESCOPE_BIN` +
`PF_HDR_ARGS`, SteamOS through a PATH shim — and a session free to ignore
either would exec the distro's gamescope carrying none of them.

Half of that failure was already loud: HDR dies on the bit depth the Welcome
fixed before the display existed. The other half was silent. The host had been
told the compositor would paint the pointer, so it stopped painting one, and
nobody did — a stream that is correct in every respect except that it has no
cursor, which nothing in the logs would have said.

So both managed paths now read the running compositor's `/proc/<pid>/cmdline`
once its node appears, and refuse the session when a flag we passed is missing.
The plan is fixed by then (`cursor_blend` feeds the encoder open, which
precedes the display), so this session cannot be corrected in place; instead
the capability is latched off for the process and the spawn fails, and the
retry resolves a correct SDR host-composited session. One rejected attempt per
boot, then it converges.

Fails OPEN at every ambiguity: no flags expected, or no readable gamescope in
`/proc`, says nothing. And it accepts ANY running gamescope carrying the flags,
because a box commonly has a second one — the Nobara test box runs its own
game-mode `/usr/bin/gamescope --steam` beside ours. That leaves only false
PASSES possible, and the flag that matters cannot produce one:
`--pipewire-composite-cursor` exists nowhere but our patch set.

Two things fell out of writing it. `gamescope_argvs` matches argv[0]'s basename
with `ends_with`, not `==` — the old equality test would have missed our own
`punktfunk-gamescope`, which is what `current_gamescope_output_size` was
already scanning for. And `hdr-probe` gained a line for who paints the cursor,
the one capability with no symptom of its own until you compare two streams.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 18:03:30 +02:00
enricobuehlerandClaude Opus 5 ee716d0137 fix(encode): pf-encode did not build on Linux without vulkan-encode
`vulkan_encode_available_at` and `vulkan_encode_caps` were gated on bare
`target_os = "linux"`, but the second returns `vulkan_video::VulkanEncodeCaps`
and both reference that module — which only exists under the feature. Every
CALL SITE was already correctly gated, so nothing pointed at them; the two
definitions alone were enough to fail the build.

That is CI's default-feature line (`cargo clippy --workspace --all-targets`),
so this was going to be caught — it was caught on a Fedora 44 box first.

`cursor_blend_capable`'s `ten_bit` goes unused in the featureless arm for the
same reason, which `-D warnings` also rejects.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 18:03:30 +02:00
enricobuehler 0d2cc65f17 fix(gamescope): force the VENDORED wlroots — the binary's portability was luck
Built the patches on a second distro (Nobara 44 / Fedora 44, for the NVIDIA
leg) and the resulting binary would not start on its own host:

    libwlroots-0.19.so: cannot open shared object file

gamescope vendors wlroots as a submodule, but meson prefers a SYSTEM one when
the build host has `wlroots-devel` — and links it shared. Fedora 43 has no such
package, so the `.116` build fell back to the submodule and linked it
statically; Fedora 44's `dnf builddep gamescope` pulls one in, so the same
script produced a binary bound to a library that exists only inside the build
container.

Confirmed rather than assumed: `ldd` on the f43 binary lists no wlroots at all
and its log says `Subproject wlroots finished`, while the f44 log says
`Dependency wlroots-0.19 found` from the system.

The consequence, had Fedora 43 ever shipped `wlroots-devel`: the sysext payload
would have carried a gamescope that cannot start, and it would have surfaced to
users as "HDR just doesn't work" rather than as a build failure. `-Dforce_
fallback_for=libliftoff,vkroots,wlroots` makes every distro produce the same
self-contained binary. All three entries go together — gamescope's own
meson.build hard-errors if the first two are dropped from that list.

Verified after the fix: `ldd` shows no wlroots/liftoff/vkroots and no missing
deps, the binary starts on the Nobara host, and its node offers the same four
formats with the colorimetry props — same result as Bazzite f43.
2026-07-28 18:03:30 +02:00
enricobuehler 3d3ecf1e82 test(encode/nvenc): the NVIDIA HDR leg, verified on an RTX 5070 Ti
The NVIDIA half of "zero-copy, no host CSC, 10-bit HDR" had never met a GPU.
Two `#[ignore]`d smokes now drive it, run on `.41` (Bazzite f43, RTX 5070 Ti,
driver 595.58.03):

* `nvenc_cuda_hdr10_packed_rgb` — a packed 2:10:10:10 CUDA payload straight
  into NVENC as `ARGB10`, HEVC **and** AV1. Asserts what would catch a
  mislabelled stream: the encoder DERIVED 10-bit and HDR from the input format
  rather than being told, and picked `ARGB10` for `X2Rgb10`. That derivation is
  what selects Main10 / AV1-at-10 and the BT.2020 PQ signalling.
* `nvenc_cuda_hdr10_cursor_blend` — `cursor_blend.comp` MODE 3/4, the 10-bit
  channel-unpacking twin. Asserts the blend targets `SlotFormat::X2Rgb10` and
  not the 8-bit layout, which would tint the pointer and shift its channels.

Both green, and the dumped bitstreams decode 0-error reporting `Main 10` /
AV1 `Main`, `yuv420p10le`, `bt2020nc` / `smpte2084` / `bt2020`.

There is no host colour conversion anywhere on this path: the frame arrives as
a LINEAR dmabuf, crosses to CUDA through the Vulkan bridge, and NVENC's ASIC
does the BT.2020 conversion following the VUI the session configured. The
"no CSC" property AMD gets from the EFC, NVIDIA gets from the encoder itself.

The whole pre-existing `nvenc_` suite was re-run alongside them — 16/16, no
regression from the depth-derivation and buffer-format changes underneath it.

Capture half checked too: the patched gamescope binary built on the AMD box
runs unmodified on the NVIDIA one (same Fedora 43 base) and its node offers the
same four formats with the colorimetry props — so headless gamescope + 10-bit
PQ is not AMD-specific.
2026-07-28 18:03:30 +02:00
enricobuehler 576bf7e294 test(encode/vulkan): 10-bit smokes — and they pass on a real AMD GPU
The Vulkan Video 10-bit path was the least-exercised code on this branch:
nothing had ever created a Main10 video session, so the profile query, the
`G10X6…3PACK16` picture allocation, the scratch→plane copy, the hand-packed
AV1 sequence header and the colour signalling were all first-run-on-glass.
Three `#[ignore]`d smokes now drive them, and they were run.

`.116` (Bazzite f43, AMD 780M, RADV / Mesa 26.0.4), all three green:

* `vulkan_smoke_10bit` — HEVC Main10 through the compute CSC;
* `vulkan_smoke_10bit_av1` — AV1 at 10 bits;
* `vulkan_smoke_rgb_10bit` — HDR with NO host CSC, the EFC converting BT.2020
  off the packed 10-bit source. It did **not** soft-skip, which answers the one
  capability in this whole feature I had only ever read in a registry: RADV's
  VCN EFC really does advertise `MODEL_YCBCR_2020` and accept a 10-bit
  packed-RGB encode source.

Every stream decodes 0-error and reports `yuv420p10le` + `bt2020nc` /
`smpte2084` / `bt2020`. The AV1 one parsing at all is the load-bearing result
there: `high_bitdepth` precedes the CICP bytes in `color_config()`, so a wrong
bit would have thrown every later field out of phase rather than merely
mislabelling the depth.

Round-trip on solid frames, fed (160,160,800) as 10-bit codes:

    compute CSC  -> (159, 158, 796)
    EFC          -> (159, 158, 796)
    AV1          -> (158, 159, 794)

Under 0.5%, all of it limited-range quantisation and lossy encode. The compute
and EFC results being IDENTICAL is the strongest check available: two
independent BT.2020 NCL implementations — my shader and AMD's fixed-function
block — agreeing to within rounding.

The smokes deliberately assert structure (submits encode, AU count, the depth
the encoder settled on), not colour: a shader writing the 10 bits into the
wrong end of the word still produces a decodable stream. Colour is the dump +
ffmpeg round-trip above, which is what actually caught nothing this time.

Also corrects a comment: I claimed a wrong store factor was a "~1.6% luminance
error". It is not. The `<< 6` PLACEMENT is the load-bearing part (dropping it
is 64x too dark); `1/1023` vs `64/65535` is ~0.1% and harmless.
2026-07-28 18:03:30 +02:00
enricobuehler 9eb9f74893 fix(gamescope): the patch did not compile on Fedora/Bazzite — three real defects
Built it for the first time, on the AMD Bazzite box (`.116`, RADV 780M,
Fedora 43 toolbox). The patches applied cleanly to the pinned rev and the
configure got all the way through wlroots — then found three things no amount
of reading would have:

**1. `SPA_VIDEO_TRANSFER_SMPTE2084` does not exist on Fedora 43.** PipeWire
1.4.11's transfer-function enum stops at `ADOBERGB`: SPA grew
BT2020_10 / SMPTE2084 / ARIB_STD_B67 as one later block. So the patch simply
did not compile on the distro it is primarily FOR. This is the same trap
punktfunk's own consumer documents and works around — `pf-capture`'s
`pw_pods.rs` spells the value out as `14` for exactly this reason — and the
fix is the same: spell out both colorimetry values, because the enum is wire
ABI mirroring GStreamer's, not a private detail. `SPA_VIDEO_COLOR_PRIMARIES_BT2020`
is present here but gets the same treatment, since its own header comment says
`\since 1.6` and there is no reason to depend on that.

The `PW_CHECK_VERSION(1, 0, 0)` guard was also just wrong: it tests the library
version, which says nothing about which enum members a header names. It now
guards only the FORMAT constants, which are what it was actually right about.

**2. The build pulled in three subprojects we never ship.** gamescope's own
unit tests want Catch2 **v3** (`catch2-with-main`) and Fedora ships v2, so the
configure died on a test suite that is not ours to build. Also disabled: the
OpenVR integration (a code path a headless capture session never enters) and
the WSI layer — which would have been WORSE than wasted work, since the distro
gamescope package installs that same layer and ours would have collided with
it file-for-file.

**3. `dnf builddep gamescope` is not sufficient.** It resolves Fedora's
*packaged* gamescope, which is older than the master we pin, and misses
`xorg-x11-server-Xwayland-devel` — without which wlroots fails several minutes
in with a `xserver.wrap` error that names nothing useful. Documented with the
symptom, so the next person recognises it in one line instead of ten minutes.
2026-07-28 18:03:30 +02:00
enricobuehler fd648aa776 feat(gamescope): put the cursor in the node, so a session can be zero-copy
gamescope keeps the pointer out of its PipeWire node — it lives on a hardware
plane for scanout, and `paint_pipewire()` composites a separate, reduced frame
that never includes it. So punktfunk has always reconstructed it from XFixes
and blended it in host-side.

That blend is what has been blocking the zero-CSC encode path, and the cost is
larger than it sounds: `VulkanVideoEncoder::open` refuses the RGB-direct (EFC)
source for any session with `cursor_blend`, because that front end is
fixed-function and has no blend stage. `cursor_blend_for` sets it
unconditionally for gamescope. Net effect: a gamescope session paid a
full-frame colour-conversion pass per frame, forever, for a pointer.

So put the cursor where it belongs. A second carried gamescope patch adds
`--pipewire-composite-cursor` (off by default — the node has never carried it,
and a consumer that draws its own would get two), painting it with the same
`MouseCursor::paint` call the scanout composite uses. It scales for free:
paint_pipewire has already set `currentOutputWidth/Height` to the capture size,
which is what that function scales against. The repaint test grows the cursor's
state beside the commit ids — a pointer-only move produces no commit, so
without it the composited cursor would freeze on a static screen while the real
one moved, and a cursor that became hidden would never be erased.

Host side, the `+pfhdr` marker becomes a monotonic PATCH LEVEL, so one probe
answers every capability the session must know before it is planned (level 1 =
HDR formats, level 2 = the cursor flag). `cursor_blend_for` and the
`gamescope_cursor` resolver both consult it through one helper, because they
have to agree: the reader without the blend is a wasted X11 connection, the
blend without the reader is a stream with no pointer, and both together with a
gamescope that paints its own would draw two.

⚠ The two indirect spawn modes carry the flag through `PF_HDR_ARGS`, so this
shares a dependency with the HDR flags: a session that ignores
`GAMESCOPE_BIN`/`PATH` and execs the distro's gamescope gets neither. HDR fails
loudly there (negotiation timeout + SDR latch); a missing cursor would be
silent. Noted in packaging/gamescope/README.md as worth a post-spawn
`/proc/<pid>/cmdline` check if it ever bites.
2026-07-28 18:03:30 +02:00
enricobuehler 2a13bc5252 fix(gamestream): advertise AV1 Main10, and honour HDR per negotiated codec
`ServerCodecModeSupport` layered `SCM_HEVC_MAIN10` and never `SCM_AV1_MAIN10`,
on the stated theory that "the GameStream AV1 path is left off until
live-confirmed". But the SDR baseline has always offered AV1 **Main8** to every
client, so that path is either live or it is not — the DEPTH was never the
uncertain part, and the omission only cost AV1-preferring clients their HDR.

Now that the encoders probe 10-bit per codec, each bit is gated on that codec's
own `can_encode_10bit` AND the SDR baseline already advertising it. A box that
does HEVC Main10 but not 10-bit AV1 — or the reverse — advertises the truth
instead of one bit standing in for both.

Two gates follow from that:

* `host_hdr_capable` becomes codec-agnostic (ANY 10-bit-capable codec makes the
  host HDR-capable). It was asking about HEVC alone, which would have hidden
  HDR entirely on a hypothetical AV1-only-10-bit box;
* the RTSP honor gains the per-session half: a client that negotiated the codec
  this host CANNOT do 10-bit with degrades to 8-bit SDR there, rather than
  being handed a PQ label over an 8-bit stream. H.264 always lands there —
  there is no 10-bit H.264 encode anywhere.

The unit test now pins each bit independently, including the two one-without-
the-other cases a single shared flag got wrong in both directions.
2026-07-28 18:03:30 +02:00
enricobuehler cb4690f216 feat(encode/vulkan): probe the device instead of guessing — AV1 10-bit + zero-CSC HDR
Three fixes to the same mistake: deciding what the Vulkan Video backend can do
from a table in our heads rather than from the driver, and routing everything
that didn't fit to libav VAAPI — where a session loses real RFI recovery and
the cursor blend for no reason the hardware asked for.

**Capability probe, per codec AND depth.** `probe_encode_support`'s "is there
an encode queue" boolean becomes `VulkanEncodeCaps { supported, eight_bit,
ten_bit }`, answered by `vkGetPhysicalDeviceVideoCapabilitiesKHR` against the
very profile chain the session open builds. So the dispatcher's prediction
cannot disagree with reality: a capable device keeps the Vulkan path, an
incapable one routes to VAAPI BEFORE burning a failed open, and the
cursor-blend mirror stays honest for free. This is the shape the direct-SDK
NVENC path already uses for its codec GUIDs.

**AV1 10-bit.** It was excluded on a guess about driver coverage; now the
device answers. `color_config()` carries `high_bitdepth` + the BT.2020/PQ CICP
triplet in both the `StdVideoAV1ColorConfig` and the sequence-header OBU we
bit-pack ourselves — they must stay identical or the driver's frame OBUs parse
against a header we didn't write. `high_bitdepth` sits BEFORE the CICP bytes,
so getting it wrong doesn't just mislabel the depth, it puts every following
field one bit out of phase; the new test reads the packed bits back.

**Zero-CSC RGB-direct in HDR.** The EFC probe assumed BT.709 and BGRA. It now
asks for the model this session's colourimetry needs (`MODEL_YCBCR_2020` for
10-bit — the extension has always had it) and for the CAPTURED format as an
encode-source format, and the session create-info selects the matching model.
An HDR session with no pointer to composite therefore hands the captured
buffer straight to the fixed-function front end and runs no host CSC at all.
Sessions that DO composite a pointer keep the compute CSC, unchanged: the EFC
cannot blend, and that rule outranks everything.

Also: `can_encode_10bit` on AMD/Intel now reports the union of VAAPI's and
Vulkan Video's answers instead of VAAPI's alone. `open_amd_intel` tries Vulkan
first and falls back, so either one being able to encode Main10 makes the
session 10-bit-capable — answering `false` because only one of them said yes
stranded encodable HDR sessions at 8 bits.
2026-07-28 18:03:30 +02:00
enricobuehler 479f0965ee feat(encode/vulkan): Vulkan Video encodes 10-bit, so AMD/Intel HDR keeps the good path
The Vulkan Video backend was 8-bit for no structural reason — the API has
`VK_VIDEO_COMPONENT_BIT_DEPTH_10_BIT` and `PROFILE_IDC_MAIN_10` in the very
fields this pinned to 8 and MAIN, and AMD VCN and Intel both encode Main10.
It was six hardcoded sites, and the cost of leaving them was paid twice over:
an HDR session had to take libav VAAPI, losing real RFI loss recovery AND the
compute CSC's cursor blend — which on gamescope is the only way the pointer
reaches the stream at all, since gamescope has no embedded-cursor mode.

An HDR session now opens a Main10 profile with 10-bit component depths, a
`G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16` picture + DPB, and an SPS carrying
`bit_depth_*_minus8 = 2` with the BT.2020/PQ CICP triplet instead of BT.709.

`rgb2yuv10.comp` is the CSC's twin, and the two interesting parts of it are:

* it is a PURE 3x3 matrix. The samples arrive already PQ-encoded (gamescope
  composites into the PQ container), so BT.2020 NCL applies to the code values
  as they are — there is no transfer function to apply here and applying one
  would be wrong;
* the scratch planes are `R16`/`RG16`, not the picture's plane formats. The
  10-bit ycbcr plane formats are not storage-image formats, so the shader
  writes the value into the HIGH bits by hand (`code10 << 6`, hence the
  `64/65535` factor and not `1/1023`) into planes that are merely
  SIZE-compatible with the picture's — which is all `vkCmdCopyImage` requires.

Scope and safety:

* HEVC only. AV1 10-bit encode has far thinner driver coverage, and a session
  open is not the place to gamble on it — those stay on VAAPI, as does a device
  that fails the Main10 profile query inside the open (the pre-existing "failed
  Vulkan open falls back to VAAPI" net, no new probe needed).
* HDR pins the compute-CSC arm over the EFC RGB-direct one, which the EFC could
  not serve anyway: its fixed-function conversion is 8-bit BT.709 narrow with
  no knob for BT.2020.
* `open_inner` binds `hdr` to the parameter-set HEADER bytes, so the depth flag
  is `ten_bit` there — the one name collision this change had to route around.
2026-07-28 18:03:30 +02:00
enricobuehler 86f4f950ba docs: the gamescope path is no longer 8-bit-only
Five pages asserted "gamescope's capture output is 8-bit" as a flat fact. It is
a fact about the STOCK binary, so say that instead, and say what to install to
change it: a new "HDR on gamescope" section covering the extra package, the two
knobs, what has to line up for a session to go HDR at all, and the two things
that surprise people — SDR content rides the same PQ stream at
`--hdr-sdr-content-nits`, and AMD/Intel HDR sessions currently lose the
composited pointer (the encode path that carries 10-bit is the one that cannot
blend it).

The roadmap's "parked / blocked" entry keeps the half that is still blocked
(Mutter's `RecordVirtual` is SDR-only through the GNOME 51 dev branch) and
drops the half that no longer is.
2026-07-28 18:03:30 +02:00
enricobuehler 17f824c3e9 feat(encode/nvenc): an HDR capture stays zero-copy on NVIDIA
AMD/Intel needed no new encoder code for HDR — the VAAPI path already ingests
an XR30 dmabuf into `format=p010:out_color_matrix=bt2020`. NVIDIA did: the
10-bit formats were excluded from the GPU import outright, so an HDR session
fell back to a CPU readback plus swscale, which is the one thing the capture
path is not allowed to ship.

It turns out no CSC kernel is needed. NVENC ingests packed 10-bit RGB natively
as `ARGB10`/`ABGR10` and does the conversion itself following the configured
VUI matrix — which `apply_low_latency_config` already sets to BT.2020 NCL for
an HDR session. So the frame travels LINEAR dmabuf → Vulkan bridge → CUDA →
NVENC unconverted: no host CSC pass, no depth loss, no extra work on a
contended SM.

* invariant 1 is restated rather than dropped: HDR must never take the TILED
  EGL de-tile blit (it renders into an 8-bit `GL_RGBA8` texture). The HDR pods
  are LINEAR-only by construction, so the plan may build the importer; the
  per-frame gate — which sees the negotiated modifier the plan cannot — is what
  enforces the tiled half, and falls back to the CPU path if a producer ever
  ignores our offer.
* …but only where the encoder can actually take the payload
  (`linux_hdr_cuda_ok`). libav's HDR route builds a P010 hardware frames
  context and swscales into it, so on a host without the direct-SDK backend a
  packed-2:10:10:10 CUDA buffer would land in a P010 surface as garbage. Those
  keep the CPU path.
* `nvenc_cuda` stops pinning 8-bit/SDR. Depth and HDR now follow the INPUT
  format, like the Windows backend: a 10-bit session whose capture came back
  8-bit encodes AND labels 8-bit rather than mislabelling.
* the cursor-blend compute shader gains two 10-bit modes, so the pointer
  gamescope leaves out of its node survives the HDR path. Same display-referred
  blend the CPU path's `composite_cursor_rgb10` already does — the samples are
  PQ, and a real sRGB→PQ cursor LUT is polish, not correctness for a pointer.
2026-07-28 18:03:30 +02:00
enricobuehler 689297c86e feat(hdr): a gamescope session streams true HDR10, decided before the Welcome
The Linux native plane has been 8-bit for a reason that stopped being true:
`capturer_supports_hdr()` returned a flat `false` because Mutter's virtual
monitors are SDR-only upstream. That is still right for Mutter, KWin and
wlroots — and wrong for gamescope, whose node can now offer 10-bit BT.2020 PQ
(packaging/gamescope). Open the three gates that held it off, together:

* the capture-side gate becomes SOURCE-AWARE (`capturer_supports_hdr_for`):
  Windows keeps its platform answer, gamescope asks whether the resolved binary
  offers the formats, everything else stays false. It must be truthful rather
  than optimistic — the Welcome is irrevocable, and PQ frames on an 8-bit
  encoder are a deliberate hard error — so every term is a static fact resolved
  before anything is spawned, including "do we spawn gamescope at all" (an
  attach inherits someone else's flags and can promise nothing);
* `want_hdr` reaches the capturer: `open_virtual_output` grew the parameter it
  never had, and the host arm stopped dropping `want.hdr` on the floor;
* the spawn gains `--hdr-enabled --hdr-debug-force-support` on all three
  sub-modes (bare args, the `GAMESCOPE_BIN` wrapper, the SteamOS PATH shim),
  from one shared `hdr_args` — the force flag is what makes it work headless,
  and forgetting it looks exactly like a negotiation failure.

Two things that would have gone wrong quietly:

* the keep-alive reuse key gains `hdr`. gamescope cannot turn HDR on live, so a
  kept SDR display handed to an HDR session would give the game no HDR surfaces
  while the stream negotiated PQ over an SDR composite — wrong, and not
  obviously broken. Same for the managed session-plus/SteamOS reuse check.
* the HDR-negotiation-failure latch becomes PER SOURCE. It was one
  process-wide flag, so a monitor that left HDR mode would have disabled
  gamescope HDR until the host restarted, and vice versa — two facts with
  nothing in common but the word HDR.

GameStream follows the same shape: `host_hdr_capable` gains the gamescope arm,
and the RTSP gate's live BT.2100 monitor probe is scoped to the portal source —
a headless box has no monitor to be in HDR mode, so running it there would
hard-refuse every gamescope HDR session.

Off by default for one release (`PUNKTFUNK_GAMESCOPE_HDR=1`), and
`punktfunk-host hdr-probe` now answers for both Linux HDR sources.
2026-07-28 18:02:13 +02:00
enricobuehler d6818263ce feat(gamescope): a build of gamescope whose capture output can be HDR
gamescope's built-in PipeWire node has always been SDR-only: it offers BGRx
and NV12, and `paint_pipewire()` hardcodes a Gamma-2.2 composite with the SDR
screenshot LUT set. So an HDR game reaches punktfunk already tone-mapped down,
and the whole gamescope backend streams 8-bit no matter what the client can
decode. Games CAN render HDR on a headless gamescope today — only the capture
half is missing.

Carry the two patches that close it (packaging/gamescope/patches): the node
additionally offers `xRGB_210LE`/`xBGR_210LE` with MANDATORY SMPTE ST.2084 +
BT.2020 props, mapped to the same 10-bit capture texture the HDR AVIF
screenshot path already allocates, and `paint_pipewire()` composites into them
with the HDR screenshot LUTs + `EOTF_PQ` — which is exactly the in-tree
`bHDRScreenshot` branch. The new formats are listed LAST, so every existing
consumer keeps negotiating the 8-bit stream bit-for-bit. Offered upstream
against ValveSoftware/gamescope#2126.

Ship it as `punktfunk-gamescope`, beside the distro's own binary rather than
replacing it: a Bazzite sysext payload (`build-sysext.sh --gamescope`, which
refuses a binary without the marker), an Arch package, a nix derivation +
`services.punktfunk.host.gamescopeHdr`, and one distro-agnostic build script
the rest call.

The second patch stamps `+pfhdr1` into the `--version` banner. That is not
cosmetic: punktfunk fixes a session's bit depth in the Welcome, before the
display exists and with no way to take it back, so its capability answer has to
be a static property of the binary it will spawn.
2026-07-28 18:01:20 +02:00
enricobuehler 28c50d1c5b fix(encode): every backend signals its colour, so no decoder has to guess
audit / cargo-audit (push) Successful in 2m38s
audit / bun-audit (push) Successful in 13s
ci / rust (push) Failing after 12s
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docker / build-push (--build-arg FEDORA_VERSION=44, ci, ci/fedora-rpm.Dockerfile, punktfunk-fedora44-rpm) (push) Successful in 10s
arch / build-publish (push) Failing after 14m19s
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deb / build-publish-host (push) Failing after 4m36s
docker / build-push (., web/Dockerfile, punktfunk-web) (push) Successful in 44s
docker / build-push (ci, ci/fedora-rpm.Dockerfile, punktfunk-fedora-rpm) (push) Successful in 11s
docker / build-push (ci, ci/rust-ci.Dockerfile, punktfunk-rust-ci) (push) Successful in 11s
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apple / screenshots (push) Successful in 22m57s
Three encode paths shipped a bitstream with no colour description at all,
leaving primaries/transfer/matrix/range "unspecified":

- Vulkan Video HEVC (`vk_build.rs`) built an SPS with no VUI whatsoever.
  This is the DEFAULT backend for AMD/Intel Linux hosts on HEVC/AV1.
- Vulkan Video AV1 packed `color_description_present_flag = 0`.
- The openh264 software path wrote nothing (it converts BT.709 limited and
  relied on decoders defaulting to that).
- The libav-NVENC Linux path excluded packed-RGB 4:2:0, on the belief that
  "NVENC's internal CSC writes its own VUI". It doesn't: libavcodec derives
  `colourDescriptionPresentFlag` from the AVCodecContext colour fields, so
  leaving them unspecified emits none. Reachable on a CPU/dmabuf capture, a
  build without `--features nvenc`, or PUNKTFUNK_NVENC_DIRECT=0.

Unsignalled looks fine on every punktfunk client — `csc_rows` falls back to
BT.709 on "unspecified" — which is why this survived. Vendor TV decoders do
not: they guess colorimetry from RESOLUTION, and an LG webOS panel reads a
4K SDR stream as BT.2020 and renders it visibly washed out.

All four now signal BT.709 limited, which is what every host CSC actually
produces (`rgb2yuv.comp`, `convert_bt709`, the swscale paths) and what the
Welcome's `ColorInfo::SDR_BT709` already advertises out-of-band. NVENC,
VAAPI, QSV, AMF and the Windows libav path were already correct.

Two tests, both parsing the REAL emitted bitstream rather than re-asserting
the constants: an independent bit-walk of the AV1 sequence header (the
packed OBU must stay identical to the `StdVideoAV1ColorConfig` handed to the
driver), and an H.264 SPS/VUI parse proving openh264 honours the request
instead of dropping it.

Not yet verified on hardware: the HEVC VUI depends on the driver's SPS
writer emitting `vui_parameters()`. PUNKTFUNK_VULKAN_ENCODE=0 falls back to
VAAPI if a driver mishandles it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit 3c56ff5717b2c9a0871953127da3dadd6a84220d)
2026-07-28 17:01:59 +02:00
enricobuehler 1db8f7631b fix(nix): move the bun packages to bun2nix — no more hand-bumped deps hash
`nix build .#punktfunk-web` has been broken since 1e9957d9 re-resolved
web/bun.lock: the console's node_modules came from a fixed-output derivation
whose single aggregate `outputHash` was last refreshed in 4094f620, so every
lockfile change silently invalidated it and the fix required a round-trip on a
Linux nix box (build, read the `got:` hash, paste it back). The runner
(sdk/bun.lock) had the same latent trap.

Replace both FODs with bun2nix (github:nix-community/bun2nix, pinned to 2.1.2).
`fetchBunDeps` turns a generated, committed `bun.nix` into bun's global install
cache — ONE `fetchurl` per package, keyed by the integrity hash already in the
lockfile — and the setup hook then runs a fully offline `bun install` in
`bunRoot`. There is no aggregate hash left to go stale. The `@unom` scope needs
no special handling: bun.lock records those tarballs' full git.unom.io URLs and
the registry is read-public.

`bun.nix` keeps itself in step: `bun2nix` is now a devDependency of both
packages and regenerates the file on every `bun install` — web via
`postinstall`, the SDK via `prepare`, because sdk/ is the published
@punktfunk/host package and a postinstall would fire on consumers' installs.
Both the flake input and the npm devDependency are pinned to the same exact
version; `bun.nix` has no schema stability guarantee across bun2nix releases, so
they move together (README documents this).

Dropped along the way: the manual `cp -R ${deps}/node_modules` + `chmod -R u+w`
+ `patchShebangs web/node_modules` dance, since bun2nix patches shebangs inside
the cache. `dontUseBunPatch` keeps the hook from running `patchShebangs .` over
the whole repo checkout (it would rewrite scripts/web-init.sh, which we ship
verbatim); `dontRunLifecycleScripts` preserves the old `--ignore-scripts`
behaviour, so playwright still never tries to download browsers.

Verified on a Linux nix box (Determinate Nix 3.21.5): `.#punktfunk-web` and
`.#punktfunk-scripting` both build green, offline; the i18n guard reports its
421 compiled messages, the `Bun.serve` bundle guard passes, and
`nix run .#punktfunk-scripting -- --list` discovers an installed plugin.
`nix flake show --all-systems` evaluates every output.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit 4cfe7f05ee608868857be9e7eec079044448a965)
2026-07-28 17:01:59 +02:00
enricobuehler 0d8862457b style(nix): run the repo's own nix fmt (nixfmt-rfc-style) over the flake
flake.nix, packaging/nix/packages.nix and packaging/nix/nixos-module.nix had
drifted from the formatter the flake itself declares (`formatter =
nixfmt-rfc-style`). Pure reformat — no expression changes — split out so the
bun2nix migration that follows is reviewable.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit 927b27c4fade6d646e3ef822678b6738f1e2f28a)
2026-07-28 17:01:59 +02:00
enricobuehler 347c106498 fix(packaging/tray): the .deb must build the tray in its own cargo invocation
punktfunk-tray panicked at every launch on Debian/Ubuntu:

  zbus-5.16.0/src/abstractions/executor.rs:190
  there is no reactor running, must be called from the context of a Tokio 1.x runtime

Not a code bug — cargo feature unification. zbus picks its executor from
its own feature flags; the host's ashpd enables zbus/tokio while the tray
runs ksni's async-io executor with no tokio runtime by design. Features
are additive across everything built in ONE invocation, and deb.yml built
`-p punktfunk-host -p punktfunk-tray` together, handing the tray a
tokio-flavoured zbus with no runtime anywhere near it.

The invariant is already established and explained inline in the RPM spec,
the Arch PKGBUILD and the Nix packages.nix — all three build the tray
alone, and their comments even claim "(Same split the .deb does.)" The
.deb did not, in two places at once: the workflow co-built it, and
build-deb.sh's own correct standalone build was skipped by an
`if [ ! -x "$TRAY_BIN" ]` guard, so it packaged the poisoned artifact.
That is also why only Debian/Ubuntu users saw it.

Drops the tray from the workflow's host build and makes build-deb.sh's
tray build unconditional — cargo no-ops when the artifact is already
async-io-resolved and rebuilds it when it is not, so a stale co-built
binary can no longer be shipped. Corrects the Nix README note that had
recorded deb/rpm/arch as sharing a "latent" crash, and its nix develop
recipe, which co-built all four.

Verified on a Linux box: co-built reproduces the panic exactly; built
alone, the tray reaches the session bus and exits with the intended
"no StatusNotifier tray available".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit f91983a84c56464bd2c18d537963cb7fb3a6e059)
2026-07-28 17:01:59 +02:00
enricobuehler 0868b6a364 fix(vdisplay): compositor availability follows the live session, not the env
GNOME/Mutter reported "Unavailable" on a host sitting in a live Mutter
session — and, on the same request, "Default", because the two columns had
different sources. available() asked each backend, and those probes read
the process env (XDG_CURRENT_DESKTOP for Mutter, WAYLAND_DISPLAY for
KWin's registry handshake, SWAYSOCK for sway) — env a host started outside
the session (systemd --user, a TTY, ssh) never inherited. It is only
retargeted at the live session on the connect path, so the answer also
flipped depending on whether anyone had connected yet.

Both columns now come from the same /proc scan detect() already used: the
live session's compositor is usable by definition, as is an explicit
operator pin, and the per-backend probe stays as the fallback for backends
that are not the live session (gamescope, which spawns its own). A live
KWin without the zkde_screencast grant now surfaces as available and fails
at create with that probe's precise message, which beats "no usable
compositor" on a box visibly running KDE.

Mutter's env sniff stays deliberately narrow — one var, not three.
XDG_CURRENT_DESKTOP is the one apply_session_env owns end to end (written
per connect, scrubbed when nothing is live); sniffing DESKTOP_SESSION
alongside would resurrect the bug that scrub exists to prevent, where a
stale value after a gnome-shell crash routes the next client into a dead
session.

Non-Linux hosts now report no compositors at all rather than five Linux
backends flagged unavailable with no default — on Windows the pf-vdisplay
driver is the only backend and vdisplay::open ignores the argument, so the
old list read as broken detection instead of "not applicable here". The
console says so explicitly.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit eb7ba3d6177552f5c3ed6a15439404084869c636)
2026-07-28 17:01:59 +02:00
enricobuehler 3b11288c97 fix(web): unsaved custom display settings are visible and recoverable
Everything else on the Displays page auto-applies — a preset click, the
game-session choice, the experimental toggles — but the Custom block does
not, and its Save button sat at the bottom of a block taller than most
viewports. People edited, never scrolled far enough to find it, navigated
away, and silently lost the lot.

The draft is now compared against the last-seeded server value, and that
one boolean drives the whole affordance: a badge in the card header
(visible without scrolling), an amber ring plus a title on the block, and
a sticky action bar pinned to the viewport for as long as any part of the
block is on screen. The bar states which of the two states you are in
rather than leaving it implied, Save disables when there is nothing to
save, and Discard changes puts the stored policy back.

Two ways edits could still vanish are closed: a preset click now confirms
before overwriting pending edits, and a reload/close warns. Re-picking
Custom while already on Custom is a no-op instead of re-seeding, which
would otherwise fill in defaults for unset fields and report "unsaved
changes" for a click that changed nothing.

Adds a `warning` badge variant + --warning token for the pending state —
attention, not failure, and distinct from the destructive red.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit c4318609c0da5ae1313081c5e488f685504f70d1)
2026-07-28 17:01:59 +02:00
enricobuehler 5ea087ca47 feat(session): the stats overlay scales with the display's DPI
The stream chrome — stats OSD, capture hint, start banner, resize label —
was hardcoded at 14 px with 12/10/8 px insets. The overlay composites into
the swapchain 1:1 in PHYSICAL pixels, so on a 4K panel at 200 % all of it
rendered at half its intended physical size: fine on a 1080p monitor, a
squint on a HiDPI laptop.

FrameCtx now carries a scale — SDL's window display scale (DPI × the
display's content scale) times a PUNKTFUNK_OSD_SCALE preference — and every
metric moved into a `base` module that is multiplied by it. Re-read per
frame and quantized into the damage key, so dragging the window to a
differently-scaled monitor re-renders at the new size rather than keeping
the stale one. Sanitized because SDL returns 0.0 when it cannot resolve the
window's display, which would collapse the panel to nothing.

Two details worth keeping: the face is re-derived at the scaled size rather
than the canvas transformed, because Skia rasterizes glyphs at the
requested size where a magnified 14 px bitmap would be mush; and the long
capture hint is fit-clamped to the window — at 2× it is wider than a 1080p
screen, so scaling it naively would have traded a small OSD for a truncated
one. Linux and Windows share this path.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit 744467d13a28b91ba88a23d6038da70263e9b502)
2026-07-28 17:01:59 +02:00
enricobuehler b444308592 feat(host): PUNKTFUNK_HOST_NAME names the host in Moonlight and the clients
A box called `bazzite-htpc` had no way to present itself as "Living Room"
short of renaming the machine. The new knob overrides the name everywhere
a human sees it: the GameStream serverinfo <hostname> element and the
mDNS service instance name both adverts carry. Unset (the default) is the
machine's own hostname, exactly as before.

Free text is the point, so the DNS-level name is now a separate concern
from the display name. The instance label may contain spaces and accents;
an A-record target may not, and mdns-sd rejects the whole ServiceInfo if
the target is not a legal name — which would take discovery down rather
than merely look wrong. dns_label() sanitizes the target and passes an
already-legal name through byte-for-byte, so hosts without the override
advertise precisely what they always did. The display name loses `.` (it
would split the label, and clients derive the name as the first label of
the fullname, so "Ben's PC v1.2" would arrive as "Ben's PC v1") and is
capped at the 63-byte DNS-SD ceiling on a char boundary.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit bbf72261a12e0e67601f549d40db65ae61979268)
2026-07-28 17:01:59 +02:00
enricobuehler 40714317a8 fix(web): empty-state cards get their top padding back
"No games found yet." sat flush against the top edge of its card on any
screen ≥640px. The call sites overrode CardContent's padding with a bare
`p-8`, but tailwind-merge only resolves conflicts within a variant: `p-8`
cancels `p-4` and leaves `sm:p-6 sm:pt-0` standing, so the desktop
breakpoint kept the zero top inset that exists for cards WITH a header.
These three have none.

Uses `flush` — the escape hatch CardContent documents for exactly this —
so the padding is owned outright at every breakpoint instead of fought
from the outside. The library grid is the one that was reported; the
store catalogue and the recordings list are the same idiom with the same
bug. PairedDevices deliberately keeps its `p-6`: it is a table under a
header, where pt-0 is the intended look.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit 71fc47f32af7c74327a26425035298f8e6464c96)
2026-07-28 17:01:59 +02:00
enricobuehler 188f55d3b1 fix(encode/nvenc): the host advertises what the driver lists, not a superset
Every NVIDIA host advertised a static H.264|HEVC|AV1 superset, so a 1st-gen
Maxwell (GTX 960M, no HEVC/AV1 encode) offered HEVC — a client that believed
it got ~15 s of blank video and a disconnect instead of a stream. Both OSes
now ask the driver itself (nvEncGetEncodeGUIDs) on one throwaway direct-SDK
session: Linux on the shared CUDA context, Windows on the selected render
adapter, wired into host_wire_caps AND the GameStream serverinfo mask (which
had been left on the superset for NVIDIA on both OSes). Fails open — an
unanswerable probe keeps the historical superset, so it can only ever narrow
the advertisement to codecs the GPU really encodes.

The HEVC 4:4:4 answer rides the same session on Linux instead of opening a
libav hevc_nvenc FREXT probe: that open is the prime suspect for the field
bug where one probe wedges NVENC process-wide (NV_ENC_ERR_INVALID_VERSION on
every later session until a host restart), and the direct backend re-checks
the same caps bit at session open anyway. The ffmpeg probe remains only for
hosts that really stream over libav (PUNKTFUNK_NVENC_DIRECT=0 or a build
without the nvenc feature), where ffmpeg's NVENC client runs regardless. The
10-bit probe deliberately stays libav — Linux HDR rides the libav P010 path.

On-hardware: .136 (RTX 5070 Ti) 14/14 nvenc tests in one process incl. the
probe followed by real sessions and dirty teardown; .173 (Windows RTX) probe
+ 47 release lib tests. The Windows probe test documents the pre-existing
MSVC debug-link failure (LNK2019 via the sdk crate's unused lazy loader) —
run it with --release, the same reason windows-host.yml gates with clippy.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
(cherry picked from commit 0346ec8090568eb499e8cb7d735305b28471185e)
2026-07-28 17:01:59 +02:00
enricobuehlerandClaude Opus 5 560e663aef fix(drivers): the pad channel asks the devnode who to trust, not the mailbox
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A LocalService principal could take over a virtual pad's shared input section and
forge HID input into the interactive desktop.

The host duplicates each pad's unnamed DATA section into the driver's WUDFHost, and
through gamepad proto v2 it learned that process from `driver_pid` in the named
bootstrap mailbox. That mailbox has to be LocalService-writable — that is what the
driver's own WUDFHost runs as — and the delivery gate, verify_is_wudfhost, only checks
that the target's IMAGE is %SystemRoot%\System32\WUDFHost.exe. That image is
world-executable. So anything running as LocalService — notably the deliberately
de-privileged plugin runner — could spawn its own WUDFHost (CREATE_SUSPENDED parks it
indefinitely with the right image path), publish that pid, and be handed
SECTION_MAP_READ|WRITE on a live section. For pf-mouse that section drives a real
absolute pointer, so it was desktop control; for the pads it was forged gamepad input
plus a read of the remote user's controller state.

The module docs claimed mailbox tampering "yields at worst a gamepad DoS, never a read
or an injection". That was wrong, and the reasoning behind it — that a LocalService
token is DACL-denied OpenProcess on a UMDF WUDFHost — only covers the REAL host, not
one the attacker spawned itself.

The pid now comes from the device stack (ChannelProof, proto 2 -> 3). The host asks the
devnode it SwDeviceCreate'd who is serving it, looked up by the instance id PnP handed
back, so a planted look-alike devnode is not a candidate and the kernel — not anything
the attacker supplies — does the routing. Only the driver PnP actually bound to that
device can answer. `driver_pid` survives as a liveness hint; a tamperer can still deny a
pad, which squatting the name always allowed, but can no longer choose the recipient.
Two rules keep the state machine honest around it: a delivery stands until its target
process EXITS (judged on a retained SYNCHRONIZE handle, so a recycled pid cannot fake
it, and UMDF's restart-after-driver-crash still re-attaches), and a pad with no
SwDeviceCreate devnode refuses to deliver rather than fall back — unless an operator
sets PUNKTFUNK_PAD_CHANNEL_TRUST_MAILBOX, which says so loudly.

Three transports, because Windows carries different things to different driver shapes,
and the obvious two did not survive contact with hidclass. Measured on .173 (Win11
26200): HidD_GetIndexedString is NOT forwarded to a UMDF HID minidriver at all — it
failed for every index including ones the driver demonstrably serves through the named
wrappers; and a private device interface registers and enumerates but cannot be OPENED
(ERROR_GEN_FAILURE), because hidclass owns IRP_MJ_CREATE on a devnode it is the FDO for.
That is exactly why pf-xusb was never affected: it is not a HID minidriver, so nothing
sits above it. What works:

  * pf-xusb   — a private IOCTL on its own GUID_DEVINTERFACE_XUSB.
  * pf-mouse  — the HID serial string. Verified: PFCP:3:0:7296, and 7296 was a genuine
                service-spawned WUDFHost.exe. Safe here alone: nothing reads the virtual
                mouse's serial, whereas a pad's is SDL/Steam dedup material.
  * pf-gamepad — a HID feature report, and it cost NO report-descriptor change. The
                captured descriptors already declare far more Feature ids than the driver
                ever served: 0x85 is declared on DualSense, DualShock 4 and Edge alike and
                used to fail with STATUS_INVALID_PARAMETER, so hidclass lets it through and
                nothing can have depended on the old failure. The Deck's one feature report
                is unnumbered and Steam drives it command->response, so its proof rides that
                existing contract via a private two-byte command. Verified: feature 0x85
                returned magic "PFCP", proto 3, pad_index 0, wudf_pid 18456 — and 18456 was
                a WUDFHost — with the product string still 'DualSense Wireless Controller'.

Also renamed pf-dualsense -> pf-gamepad. One driver has always served four identities, so
the old name read as if the other three lived elsewhere. ONLY the package identity moved
(crate, INF/CAT/DLL, UMDF service, build script, CI lines, log file, env var). The four
HARDWARE IDS are deliberately unchanged — they bind every devnode the host creates and
every installed system — as are the Global\pfds-boot-<i> mailbox and PAD_MAGIC, which are
wire contract. `driver install --gamepad` now retires the pre-rename store package first,
matched on pf_dualsense.dll because that string appears only in the OLD inf; matching on
the hardware ids would delete what we are about to install. On .173 that separated 14
stale packages from the 1 new one with 0 ambiguous, and the renamed package binds the old
hwid (devgen root\pf_dualsense -> oem143.inf = pf_gamepad.inf).

The repo's own pre-commit/pre-push rustfmt hooks named the old crate, so they caught the
rename before the commit did — they now check pf-gamepad, and pf-mouse alongside it, which
they had been missing relative to the CI line.

Host and drivers MUST ship together: v2<->v3 fails closed in both directions by design,
with the existing "update host + drivers together" diagnostic.

The rename moved files that also carry the security change, so splitting this into two
commits would mean reconstructing an intermediate state that was never gated. It is one
commit on purpose.

Gated on the windows-amd64 runner with cargo clean first (the box's clock lags, so stale
artifacts would read as a vacuous green): clippy -D warnings clean for pf-inject,
pf-capture and pf-driver-proto, drivers workspace build + the CI clippy line clean,
cargo check --release -p punktfunk-host clean, 19 + 58 tests green. Also fixes pf-mouse
still writing its debug log to world-writable C:\Users\Public, which the 2026-07-17
review moved for the other three drivers and missed here.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-28 16:54:40 +02:00
enricobuehlerandClaude Fable 5 9b3ec9204c fix(capture): a refused EGL→CUDA dmabuf offer stops being asked
ci / rust (push) Failing after 41s
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The raw-dmabuf passthrough has had a negotiation-timeout latch since the
hybrid-Intel case: one conclusive timeout and later captures negotiate the
CPU path instead of re-paying it. The EGL→CUDA dmabuf-only offer had no
equivalent — a compositor that accepts none of the importer's modifiers
timed out the same 10 s negotiation on every session, forever, under the
generic 'format negotiation never completed' diagnosis.

Now the symmetric latch (note_gpu_dmabuf_negotiation_failed) gates
build_importer in the one negotiation resolver, scoped to this offer alone
(raw passthrough, worker-death latch, encoder untouched), with the same
operator escape as the raw arm: an explicit PUNKTFUNK_ZEROCOPY=1 keeps
erroring loudly instead of downgrading.

One correctness detail beyond the handoff's sketch: whether the GPU offer
was ACTUALLY advertised is a runtime fact of the PipeWire thread (the
importer may fail to construct — no CUDA — in which case no dmabuf was
offered and a timeout must not latch it off). plan.build_importer alone
cannot answer that, so the thread records the made-offer on CaptureSignals
(gpu_dmabuf_offer) and the timeout diagnosis branches on the offer that
really happened, not the plan's intent.

Also renames vaapi_dmabuf_forced → zerocopy_forced (it now guards both
timeout arms; single caller). New plan invariant pinned in tests: the
latch gates only the importer, never the raw passthrough.

(V3 from design/pf-zerocopy-sweep-handoff.md — the deferred design call,
now decided in favour of the symmetric latch.)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 13:15:36 +02:00
enricobuehlerandClaude Fable 5 e92a0aaa00 fix(zerocopy/vkslot): a timed-out blend can't corrupt its slot, and NV12 cursor chroma sits on the grid
Two [GPU]-class defects from design/pf-zerocopy-sweep-handoff.md; the code
is compile- and unit-verified, the visual halves still owe on-glass time.

- blend_ref reused a fence and command buffer after a wait timeout: on
  TIMEOUT it reset a fence that still had a pending signal and re-recorded
  a command buffer the GPU might still be executing — reached exactly in
  the contended case the CPU-synced path exists for (no timeline export +
  visible cursor + a >1 s GPU stall). A failed wait now drains the device
  before the reset (the VkBridge::import_linear precedent), and free_slots
  quiesces unconditionally instead of only when a timeline exists, so
  teardown after a timed-out sync blend no longer frees objects an
  outstanding submission references. (C1)

- cursor_blend.comp anchored NV12 chroma blocks to the cursor's oy, not
  the surface chroma grid: for odd oy every UV sample averaged luma rows
  one below the rows it covers (a one-row colour fringe on the cursor's
  edges, ~half of all cursor positions) and the cursor's last row's chroma
  was never written. Block rows now anchor to the chroma grid the same way
  spans anchor to the word grid — y0 = floor(oy/2)*2, per-row cy guards
  for the straddle block — and blend_geometry counts blocks from the same
  anchor (one extra block when oy is odd; covered by new tests, including
  negative oy). cursor_blend.spv rebuilt (glslangValidator, spirv-val
  clean, drift gate passes). (C6)

Owed on-glass: a stalled-GPU cursor session for C1; an odd-oy cursor
colour check for C6 (subtle fringe on the cursor's top/bottom edge).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 13:01:46 +02:00
enricobuehlerandClaude Fable 5 fa083f50d3 fix(zerocopy): unsafe fn bodies join the unsafe-proof program
#![deny(clippy::undocumented_unsafe_blocks)] never inspected the body of an
unsafe fn — operations there are not "unsafe blocks" — so roughly 20
functions' worth of raw GL/CUDA/Vulkan driver calls sat outside the
invariant the crate advertises. Concretely, that blind spot is why the
constructor-leak and teardown-ordering shapes fixed earlier in this series
could ship without ever prompting a reviewer.

#![deny(unsafe_op_in_unsafe_fn)] now closes the gap: every unsafe fn body
is an explicit unsafe block carrying a SAFETY comment that names the
caller contract it relies on (the dlopen'd CUDA wrapper table gets a
uniform forward-to-live-table proof). Mechanical; no behavior change.

(V2 from design/pf-zerocopy-sweep-handoff.md.)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 12:59:15 +02:00
enricobuehlerandClaude Fable 5 c677732c60 fix(zerocopy/client): a wedged worker can't park the reaper, and no worker outlives the host
Three related reaper problems (R5 from design/pf-zerocopy-sweep-handoff.md):

- sweep_reaper called kill() + blocking wait() while holding the global
  REAPER mutex. A worker wedged in a driver ioctl is in D state and ignores
  SIGKILL, so wait() never returned — parking every later spawn() and every
  importer drop() behind the lock. Expired entries are now drained under the
  lock and killed outside it, with a bounded (~100 ms) try_wait poll; a
  worker that still won't die is parked again for a later sweep (re-killing
  is harmless) instead of blocking anyone.
- No PR_SET_PDEATHSIG: if the host died, the worker survived holding its
  CUcontext + BufferPool — by the code's own comment, hundreds of MB of
  VRAM. The pre_exec closure (async-signal-safe: prctl/getppid/dup2/fcntl
  only, no allocation) now arms SIGKILL-on-parent-death with the standard
  getppid race guard.

Not taken: arming the 20 s kill deadline from a timer instead of the next
spawn/drop (the handoff's optional third leg). PDEATHSIG closes the
worst-case orphan; a wedged worker after the LAST capture of a session
still waits for the next spawn to be swept.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 12:53:43 +02:00
enricobuehlerandClaude Fable 5 3c62da3b8e fix(zerocopy/client): renegotiation retires the old generation's IPC mappings
Shared::mappings only ever grew: clear_cache reset sent_keys and told the
worker to drop its fd cache, but nothing closed the host-side CUDA IPC
mappings for the previous pool generation. A session that renegotiates
repeatedly (mode changes, HDR toggles, client reconnects) accumulated a
pool's worth of stale mappings each time, each pinning a host VA
reservation to peer memory the worker had already freed.

Mappings now carry a refcount and a retired flag. clear_cache closes every
unreferenced mapping immediately and marks the rest retired; a retired
mapping closes when its last in-flight DeviceBuffer releases. The worker's
half of the contract: ClearCache also forgets its VA→id map, so anything
delivered after the boundary gets a fresh id WITH its descriptor — without
that, a same-shape renegotiation (worker keeps its pool) would re-deliver
an old id whose host mapping was just closed, and the host would misread
it as a desync. Ids never repeat (next_id only counts up), so fresh ids
cannot collide with the graveyard.

(R6 from design/pf-zerocopy-sweep-handoff.md.)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 12:52:42 +02:00
enricobuehlerandClaude Fable 5 a2033d6c82 fix(zerocopy/vulkan): VkBridge bring-up and the CSC build unwind instead of leaking
VkBridge::new leaked its instance (and past device creation, the device and
command pool too) on every error path — reached repeatedly, because a box
whose Vulkan device refuses the external-memory extensions retries the
bridge on every LINEAR frame. Pre-device failures now destroy the instance
explicitly (the VkSlotBlend::new shape); after device creation the
remaining objects build into an incrementally-filled struct whose existing
Drop tolerates the nulls a partial init leaves (Vulkan destroy calls are
defined no-ops on VK_NULL_HANDLE).

ensure_csc had the same hole across its six-object pipeline build; the
fallible half now fills the Csc front to back and a mid-build failure
destroys exactly what was created, leaving self.csc None for a clean retry.

(R3 from design/pf-zerocopy-sweep-handoff.md.)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 12:49:42 +02:00
enricobuehlerandClaude Fable 5 8d02255703 fix(zerocopy/egl): construction can fail late, so teardown must be structural
Three unwind holes in the EGL side, all of the same shape — fallible
construction over raw handles with no Drop to unwind through — and all
retried per frame, so a sustained failure (VRAM pressure is the realistic
one) leaked unboundedly:

- The GlBlit/Nv12Blit/Yuv444Blit constructors interleave GL-object creation
  with fallible steps (FBO completeness, CUDA registration, pool
  allocation). A GlNameGuard now owns every bare GL name until the final
  struct exists; on unwind it deletes them AFTER the RegisteredTexture
  locals unregister (declaration order), preserving the
  unregister-before-delete invariant. gl.rs gets the same treatment for its
  compile paths: the vertex shader on a fragment-compile failure, the
  program on a link failure. (R1)
- EglImporter::new leaked the DRM render-node fd and the whole gbm_device on
  every '?' after their creation (most realistically cuda::context() failing
  on a host where EGL comes up but CUDA does not). Both now live in a
  GbmDevice with its own Drop: destroy the device, then close the fd. (R2)
- EglImporter's manual Drop destroyed the gbm device and closed the fd
  BEFORE field drops ran the blit destructors, which then called
  cuGraphicsUnregisterResource/glDeleteTextures against a dead native
  display — the stale-driver-state class this path once crashed on. The
  Drop impl is gone; teardown is now purely field order (blits and bridge
  first, GbmDevice last), and the blit SAFETY comments cite that order
  instead of the previously-false claim. (R4)

(R1/R2/R4 from design/pf-zerocopy-sweep-handoff.md.)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 12:47:54 +02:00
enricobuehlerandClaude Fable 5 8de5ba4092 test(zerocopy): the fd must actually cross the socket, not just claim to
SCM_RIGHTS descriptor passing is the mechanism the whole worker isolation
design rests on, and no test verified it end to end: both suites asserted
only the has_fd boolean parsed from the JSON body. Setting the send-site's
descriptor to None — zero-copy broken in production — stayed green; so did
dropping the received fd in the worker's dispatch loop.

Now the client-side scripted peer records the st_ino of every descriptor
that arrives and the tests assert the sequence against dmabuf_key() of the
sent plane (SCM_RIGHTS re-numbers the fd but preserves the open file
description, so the inode is the identity the worker keys its cache on);
the worker dispatch test sends one import with a live fd and asserts the
backend received a descriptor with the sender's identity. (T1 from
design/pf-zerocopy-sweep-handoff.md)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 12:43:39 +02:00
enricobuehlerandClaude Fable 5 143a707f76 fix(zerocopy): the mechanical sweep batch — truthful fence waits, forgiving env flags, no leaked planes
From the pf-zerocopy review sweep (design/pf-zerocopy-sweep-handoff.md), the
compile-verifiable batch:

- dmabuf_fence: the blocking poll's result was discarded — EINTR silently
  skipped the wait (reopening the stale-frame race a SIGCHLD away) and a
  timeout reported as waited. Now EINTR retries with the remaining budget
  and the caller gets Signaled/TimedOut/NoFence, so the one diagnostic
  operators have about implicit fencing stops lying. (C2)
- env flags: PUNKTFUNK_ZEROCOPY=TRUE meant *off* — values are case-folded
  now, and an unrecognised spelling falls back to the flag's default with a
  one-shot warning instead of silently inverting the operator's intent. (C3)
- cuda: alloc_pitched_nv12 leaked the Y plane when the UV allocation failed
  (per-frame under VRAM pressure — the worst possible time to leak); a failed
  async-copy enqueue now drains the stream before returning, so a recycled
  pool buffer can't race an orphaned in-flight copy. (C4, C5)
- worker: --fd is validated (>= 3, fstat + S_ISSOCK) before OwnedFd adoption
  — 'zerocopy-worker --fd -1' was constructing OwnedFd's niche value. (V1)
- docs: all 15 rustdoc warnings fixed, including the link to the renamed
  note_raw_dmabuf_negotiation_failed. (D1)
- CI: a SPIR-V drift gate — the committed .spv blobs are include_bytes!'d and
  rebuilt by hand; the gate diffs disassembly (filtering only the
  shaderc/glslang generator difference) so a forgotten rebuild fails CI
  instead of shipping the old kernel. Both blobs verified in sync. (S1)
- tests: bt709_limited pinned to external BT.709 anchors (it is the sole
  oracle for the GPU colour self-test); blend_geometry gets its first tests —
  empty rect, CURSOR_MAX clamp, per-format group counts, and negative-ox
  floor alignment. (T2, T3)

Verified on .25: clippy -D warnings clean, 27/27 tests, cargo doc 0 warnings.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 12:40:37 +02:00
enricobuehlerandClaude Sonnet 5 c4e80fd455 docs(release): v0.21.0 notes should only cover its own delta
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Duplicated the entire v0.20.1 fix bundle verbatim instead of
following house convention (each vX.Y.Z.md covers only what changed
since the immediately preceding release file — see v0.19.1 -> v0.19.2,
neither restates the other). v0.20.1 is a real, already-tagged
release with its own notes file; 0.21.0 only needed to add the
monitor-streaming feature, the KDE registry fix found while building
it, and the CI-only winget fix, with a pointer back to v0.20.1 for
the rest.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-28 09:08:47 +02:00
enricobuehlerandClaude Opus 5 d08893383a chore(release): bump workspace version to 0.21.0
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42 commits since v0.20.0 (v0.20.1 was tagged but never announced;
superseded by this release rather than repointed, since real new
functionality landed after it was cut). Minor, not patch: the
headline is streaming one of the machine's own physical monitors
instead of always creating a virtual display — pick it from a new
console card or pin it in host.env, on KWin, Mutter, sway and
Hyprland, in both the Punktfunk app and Moonlight.

Also folds in the full v0.20.1 fix bundle: three Windows install
blockers found within hours of 0.20.0, GameStream/Moonlight compat
back to opt-in on fresh installs, three gamescope Game Mode takeover
faults, a laptop-panel stall misdiagnosis, and the PyroWave
high-bitrate latency-creep bundle — plus a KWin 6.7 regression found
while building the monitor feature (silent kscreen-doctor fallback
on every session) and a winget release-verification CI fix.

Wire protocol stays at 2, the embeddable C ABI at 13 and the Windows
virtual-display driver protocol at 6. GET /display/monitors is a new
additive endpoint; the display policy gains an optional
capture_monitor field. No embedder rebuild required.

Notes authored ahead of the tag per docs/releases/README.md.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-28 00:03:44 +02:00
enricobuehlerandClaude Sonnet 5 74179c4c2e fix(ci/winget): envs: must live under with:, not as a step sibling
24d2f97e added envs: GITHUB_REF_NAME to fix "Verify the served
catalogue" failing on every tag with `GITHUB_REF_NAME: unbound
variable` — but placed it as a sibling of with:/env: on the step,
which is not part of the step schema and is silently ignored by
Gitea's runner. appleboy/ssh-action never received it as an input,
so the step kept failing identically on v0.20.1's first tag run.

docker.yml and deploy-services.yml already forward REGISTRY_TOKEN
this way correctly: envs: nested inside with:. Moved to match.
Confirmed by parsing the workflow and checking envs lands in the
step's with: dict, not as a bare step key.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-28 00:01:45 +02:00
enricobuehlerandClaude Opus 5 8fe71be424 fix(web): applying a saved preset kept switching the streamed screen off
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`applyCustomPreset` builds a FRESH policy object instead of spreading the
draft, so every field it doesn't name is dropped. `capture_monitor` was
not named — so picking one of your own saved presets silently took a host
that was mirroring a real monitor and put it back on a virtual display.
The same omission in the Custom switch would have done it there too.

Found on-glass against a running serve on .136: the PUT is whole-object,
so the console is the only thing keeping the orthogonal axes alive, and
these two sites were the ones building a policy from scratch rather than
from what was already in force.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 a98174ebfa feat(host): anchor-test, and libei says which output absolute input landed on
The absolute-region ladder existed for one case a unit test can only
simulate — two heads of the SAME size, where matching a libei region by
the streamed mode is a coin flip — and that case had never been run
against a real compositor. It was also unobservable: the log said which
regions the EIS server offered, never which one a coordinate went into,
so "the pointer is on the wrong monitor" could only be discovered by
looking at a monitor.

libei now reports the chosen region once per distinct answer, beside the
existing miss warning: one covers an anchor that named nothing, this one
covers an anchor that matched something, by saying which.

`anchor-test` is the gate that reads it, in the shape mirror-test
established: it enumerates the heads, SAYS whether the rig actually has
two of the same size (a green run on a single-head box proves nothing),
anchors at a named one (or `--none` for the A/B that makes the anchored
run mean anything), and walks the corners. It refuses to run off libei
rather than emitting a green result about a ladder that isn't there.

On-glass on KWin 6.7.3 with `kwin_wayland --virtual --output-count 2`
(regions 1920x1080+0+0 and +1920+0): unanchored picks +0+0, anchored at
Virtual-1 picks +1920+0, anchored at Virtual-0 picks +0+0. That is open
item 3 of design/per-monitor-portal-capture.md §8b, closed.

Clearing the pin now logs too — setting one always did, and the streamed
screen going back to virtual is the same size of change.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 ea0c61fb0f docs: streaming a real monitor, and the CLI that names one
The console grew a "Streamed screen" card and the host grew a
PUNKTFUNK_CAPTURE_MONITOR knob and a list-monitors command, and the docs
knew about none of it — a control with no explanation anywhere.

virtual-displays.md gets the feature section: what it is for, that the
monitor is never touched, that its resolution wins and a client scales,
that a bad name is a hard error rather than a different screen, and that
there is no chooser dialog on any of the four backends (which is what
makes it work unattended). Plus the three troubleshooting entries the
shape of the feature predicts: settings that do nothing while mirroring,
a console card the env var has locked, and a pin that names no head.

host-cli.md documents list-monitors and mirror-test; configuration.md
gets the knob, including that it outranks the console on purpose;
running-as-a-service.md gets the desktop-session drop-in and states that
the host needs nothing exported to find its session.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 19deac75fe feat(packaging): a desktop-login host restarts with its desktop
The shipped unit's PartOf=punktfunk-kde-session.service covers the
APPLIANCE route, where we start the compositor ourselves. A host on a
machine somebody logs into has no such unit: when Plasma or GNOME
restarts, the daemon keeps running while holding a Wayland socket and a
portal D-Bus connection that both died with the old compositor, and it
cannot recover either in-process. It fails quietly — the host still
listens, still answers, and every session it then serves dies at capture.
A host that mirrors a monitor idles for days between sessions, which is
the shape that finds this at the worst moment.

The drop-in binds the host to graphical-session.target: PartOf takes it
down with the session, WantedBy brings it back with the new one. Shipped
under /usr/share rather than as an active drop-in, because it is wrong
for the appliance route (which may never reach that target at all, and
would then leave the host permanently stopped) — the operator opts in.

Closes the restart half of design/per-monitor-portal-capture.md §6.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 45f04f50fe test(mgmt): gamescope reports no monitors, and that is not a missing explanation
/display/monitors must never answer empty AND silent — the console reads
that as "the host is broken". But gamescope is nested: it owns no
physical heads by construction, so empty-and-silent is the correct answer
there, not an unexplained one.

Any dev box that has ever been in game mode keeps gamescope-0 sockets in
its runtime dir, so detect() resolves gamescope and the test failed on
the machine rather than on the code (found running the suite on .136).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 6afc05155b feat(vdisplay/session): derive SWAYSOCK — the last session var a --user host lacked
Session detection already hands every backend the live session's env:
WAYLAND_DISPLAY from a socket scan, XDG_RUNTIME_DIR from the uid, the
session bus, XDG_CURRENT_DESKTOP, and Hyprland's instance signature. sway
was the exception — SWAYSOCK had to be INHERITED from the login shell, so
a systemd --user host that never saw one had no sway IPC at all: no
output enumeration, no capture chooser, no wlroots backend (its
is_available() keys off that very variable).

It is derivable, and by identity rather than guess: sway names its socket
sway-ipc.<uid>.<pid>.sock, and detection already knows the compositor
PID. Ladder: a valid inherited value, then the exact PID's socket, then
the newest one we own (a sway re-exec can leave the name pointing at a
PID we didn't see). None on river — the other wlroots desktop ships no
sway IPC, and saying so is what stops apply_session_env exporting a
SWAYSOCK that points at nothing.

Closes the session-env half of design/per-monitor-portal-capture.md §6
for a desktop-login host: nothing has to be exported for the host to find
its session.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 829bcb7962 fix(gamestream): the streamed-screen pin applies to the portal source too
PUNKTFUNK_CAPTURE_MONITOR is documented as "instead of creating a virtual
display OR taking whichever head the portal hands back", and the console
presents it as a host-wide setting. The compat plane's portal source did
neither: it went straight to the chooser, so a Moonlight client on a
pinned host silently got whatever screen the portal picked. That is the
one outcome the whole feature exists to prevent — showing the wrong
monitor is worse than showing none.

The portal arm now mirrors the pinned head instead, through the same
MirrorDisplay the virtual source reaches via vdisplay::open. It launches
nothing and creates no virtual output, so it needs neither the
game-lifetime machinery nor the registry (External ownership passes
through it anyway).

Which screen a pooled capturer is showing is now the third reuse key
beside HDR-ness and cursor mode. The pin is a LIVE setting — the console
can re-aim the host between two connects — so without it in the key the
second connect would keep streaming the previous screen, which is the
same silent-wrong-monitor failure by another route (§7.3, open item 5).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 de3ef50434 fix(native): a mirrored monitor has a fixed mode — refuse to resize it
A physical head runs at the mode its owner set, and MirrorDisplay::create
ignores the requested one on purpose. So a mid-stream Reconfigure against
a mirror could only ever tear the cast down and rebuild the identical one
at the identical size — a hitch that buys nothing, and an invitation to
the worse reflex of reconfiguring the display someone is sitting at.

reconfig_allowed grows a third gate beside gamescope and per-client-mode
identity, and the session captures it at bring-up like the others: this
session opened its display under whatever the pin said then, so a console
change mid-session must not retroactively change the answer it gives.

Linux-only, because vdisplay::open only routes to the mirror there — a
pin left in a Windows host's settings streams nothing different and must
not disable resize as a side effect.

design/per-monitor-portal-capture.md §7.3, open item 4.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 b08226dbf1 feat(vdisplay): mirror a pinned monitor on sway and Hyprland
P5 of design/per-monitor-portal-capture.md, and the end of a hole worth
naming: the pin was accepted, persisted and offered in the console while
`create` bailed on these two backends, so a sway or Hyprland host with a
monitor selected failed EVERY session.

Both already ship the mechanism — a managed portal-chooser config plus a
per-session selection file (xdpw's `Monitor: NAME`, xdph's
`[SELECTION]screen:NAME`) — so mirroring is that same chooser pointed at a
physical connector instead of a headless output we created. The keepalive
stops the cast and nothing else; the monitor is the compositor's.

The selection write is now serialized against the handshake that reads it
(SELECTION_LOCK, applied to the virtual-output paths too). That file is one
per-user path: whoever writes last before the portal reads wins, and the
loser does not fail — it silently captures the other session's output.

`managed` is no longer grounds for refusal everywhere. It is conclusive
only where the name is ours by construction (KWin's `Virtual-punktfunk`,
Hyprland's `PF-N`); sway names EVERY headless output `HEADLESS-N`, its own
included, so the old rule would have refused to mirror any output on a
headless sway box — exactly the remote setup this feature serves. Found
on-glass, and now a test.

Verified on a two-output headless sway: asking for HEADLESS-1 yields
1280x720 frames and HEADLESS-2 yields 1920x1080, so the chooser really does
steer per request. Hyprland is compile-only — no Hyprland box exists.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 d461d889c3 feat: the streamed screen is a persisted setting, pickable from the console
P4 of design/per-monitor-portal-capture.md. The pin was an env var read
once at startup, which a console picker can never write — so it becomes a
field of the display policy (orthogonal to presets, like game_session), and
`vdisplay::capture_monitor()` resolves env-over-policy: an appliance that
pinned in its unit's host.env stays pinned there, and a console click
cannot re-aim a machine whose operator already declared the answer.

Read per `open` rather than cached, so a picker change takes effect on the
next session instead of the next host restart. The host re-resolves the
input anchor on every policy write — including clearing it when the pin is
cleared, or a later virtual-display session inherits an anchor aimed at a
monitor it is not showing.

`with_manual_layout` carries the pin through like the other orthogonal
axes: without that, saving a display ARRANGEMENT would silently swap the
streamed screen back to virtual.

Console: a "Streamed screen" card listing the host's real monitors beside
"Virtual screen (default)", saving on selection. A disabled head is listed
but not selectable (so "why isn't it here?" has an answer), and an
env-pinned host renders read-only with the reason rather than offering
controls that silently lose to the environment.

Verified on GNOME/Mutter: pinning via the policy file alone (no env) routes
sessions to the mirror and anchors input; setting the env to a different
connector overrides it, exactly as documented.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 358cfa4be4 feat(host): mirror-test — the on-glass gate for per-monitor capture
Opens the display backend exactly as a session would, attaches a capturer
and reports the frames a named head actually produces, with no client
involved. `--monitor` names the head explicitly (it cannot go through
PUNKTFUNK_CAPTURE_MONITOR: pf_host_config parses the environment once and
startup already read it, so a tool setting it for itself would still see
the old snapshot — hence vdisplay::open_mirror); with no argument it
exercises the production routing through the pin.

A frame timeout is NOT treated as failure. Compositor capture is
damage-driven — the host's own capture diag logs new_fps=0 for virtual
outputs on an idle desktop for exactly this reason — so the first version
of this tool ended its measurement on the first idle gap and made a working
mirror look like a 2-frame stall.

Verified on KWin 6.7.3 (home-nobara-1), mirroring HDMI-A-1: 346 frames in
20s at 1920x1080, arriving while input was injected and pausing when the
desktop went quiet, on both the CPU (BGRx/MemFd) and zero-copy (NV12
dmabuf) paths, ownership=External.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 045deaf77a fix(vdisplay/kwin): bind the output-device REGISTRY — KWin 6.7 stopped
advertising per-output globals

Found on-glass while testing monitor enumeration: KWin 6.7.3 advertises
kde_output_device_registry_v2 and NOT one kde_output_device_v2 global per
output. This module only ever bound the globals, so on a current KWin it
saw zero devices.

That is not just an enumeration gap — it silently disabled the whole
in-process output-management path, which exists precisely because
kscreen-doctor wedges. The live 0.19.2 host on the test box logs
"kde_output_management unavailable — kscreen-doctor fallback" on EVERY
session, so every topology apply there has been going through the tool this
module was written to stop using.

Both models are supported now: the per-output globals older KWin sends, and
the registry's `output` events. Devices from the registry arrive a round
later than globals do, so the handshake takes one more barrier — skipped
when nothing is still awaiting its `done`, so the classic path costs
nothing.

Verified on KWin 6.7.3: enumeration now reports HDMI-A-1 1920x1080@60 at
+0,+0 scale 1.35 primary, matching kscreen-doctor exactly.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 bf2f54a5fe feat(vdisplay): mirror a pinned monitor on Mutter, and scope the HDR probe
P3 of design/per-monitor-portal-capture.md. Mutter's mirror is the same
private ScreenCast session the virtual path already drives, one call
different — RecordMonitor instead of RecordVirtual — so it inherits what
makes that path work headlessly: a direct D-Bus API that needs no
interactive approval, unlike the xdg portal a background service could
never answer.

Deliberately not under TOPOLOGY_LOCK: that serializes operations which add
or remove a monitor or apply a monitor configuration, and mirroring does
neither. Nothing is created, no layout changes, and teardown is just Stop —
the SIGSEGV-adjacent ordering the virtual path must observe cannot arise
when no monitor is being removed.

The GNOME HDR probe now honors the pin. Asking "is ANY monitor in BT.2100
mode" was fair while capture took whatever head it was handed; once the
operator names one, an HDR TV on the next connector must not talk the host
into offering PQ formats for the SDR panel it is actually streaming. A pin
that names no live head reports SDR rather than falling back to "any" — the
session is about to fail on that same missing monitor, and an over-claimed
HDR offer would be a second, quieter wrong answer.

⚠️ RecordMonitor's exact signature is read from the interface, not yet
confirmed against a live gnome-shell; no GNOME box was reachable.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 53c772702f feat(host): list-monitors CLI, and two bugs it caught on-glass
An operator configuring an unattended host has to learn the connector
names from somewhere, and "curl the management API before the host is
configured" is not it. `punktfunk-host list-monitors` prints them with
geometry and flags the pinned one.

Running it under a real sway immediately caught two defects the unit tests
could not:

  - the query used the `swaymsg` command helper, which inserts `--`, so
    `-t get_outputs` came back as "Unknown/invalid command '-t'". Queries
    now go through a `swaymsg_query` helper that cannot make that mistake.
  - compositors write the literal "Unknown" rather than leaving make/model
    empty, so the picker label read "Unknown Unknown". One `describe`
    helper now treats that as absent, for all four backends.

Verified on a headless two-output sway: names, modes, positions, scale and
the case-insensitive pin all resolve.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 93c2765db7 feat(vdisplay): mirror a pinned physical monitor on KWin
P2 of design/per-monitor-portal-capture.md. zkde_screencast's
stream_output records an output KWin already has — the connector name IS
the selection, so there is no dialog, no portal and no chooser for a
background service to answer.

It arrives as a VirtualDisplay reporting DisplayOwnership::External, which
already means "someone else's display, merely mirrored: no keep-alive, no
topology, no reuse". So the rule that we must never disable, move or
"restore" a monitor the user is sitting in front of holds by construction
rather than by everyone remembering it — and create() ignores the client's
requested mode for the same reason: a panel runs at the mode its owner set.

Routing lives in vdisplay::open, the one place every session opens a
display, so the pin cannot be honored on one plane and ignored on another.
The host sets the libei anchor from the same pin (pf-vdisplay must not
depend on pf-inject), which is what makes absolute input land on the
mirrored head instead of a same-sized neighbour.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 2eeee650b9 fix(inject/libei): absolute coordinates resolve by identity, not by size
libei hands the injector one region per logical monitor with no output
name attached, so picking one meant matching the streamed mode's SIZE —
a coin flip the moment two heads share a mode, and it already resolved
wrong on-glass once (GNOME, a dummy HDMI beside the virtual primary: the
seat cursor never entered the streamed monitor, so neither cursor path
could see it).

The ladder is now mapping_id -> origin -> size -> first. Two outputs can
share a size but never a top-left, and a mirrored head's region is not the
client's size at all, so the size rung cannot find it — this is what makes
per-monitor capture land its input on the monitor it is showing.

An anchor that matches nothing falls back down the ladder rather than
stranding input: the region set is the truth and the anchor is our belief
about it. It warns once per distinct anchor, because the failure this
exists to prevent is a pointer that silently lands elsewhere.

P1 of design/per-monitor-portal-capture.md — mechanism and tests only.
Nothing sets an anchor yet; the pin wires it in P2, and the doc comment
records why it is host-level and not per-session.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Opus 5 95e3314d9a feat(vdisplay): enumerate the host's physical monitors
P0 of per-monitor capture (design/per-monitor-portal-capture.md): nothing
in the tree could answer "what heads does this host have?", which both a
monitor pin and a console picker need first.

One read per compositor, each beside the code that already speaks that
dialect: KWin's kde_output_device_v2 (the topology session now also records
geometry + scale), Mutter's DisplayConfig.GetCurrentState, swaymsg
get_outputs, hyprctl monitors. Logical geometry throughout, because x/y is
what identifies a head — two monitors can share a size but never an origin.

PUNKTFUNK_CAPTURE_MONITOR parses here and is reported at startup, loudly
including that it is not yet enforced: a knob that is read but inert has to
say so, or "it didn't work" reads as a bug. GET /display/monitors always
answers 200 with an explained empty list, so a compositor-less host renders
as "nothing to pick", not as a broken console.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 23:51:41 +02:00
enricobuehlerandClaude Sonnet 5 3721b6816d chore(release): bump workspace version to 0.20.1
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24 commits since v0.20.0. Patch, not minor: entirely fixes and
hardening on top of last release's session⇄game work, nothing new to
opt into. Headline fixes: three Windows install blockers reported
within hours of 0.20.0 (a false conflicting-host detection, a broken
winget log-path switch, missing package-source instructions),
GameStream/Moonlight compat flipped back to opt-in on fresh installs,
three gamescope Game Mode takeover faults that could black out a
Linux machine or strand it on a host restart, a deactivated laptop
panel misdiagnosed as a blind spot instead of a named stall cause,
and the PyroWave high-bitrate latency-creep bundle (clock re-sync
starvation, wire bitrate overshoot, backlog buildup, ABR probe
false-congestion).

Wire protocol stays at 2, the embeddable C ABI at 13 and the Windows
virtual-display driver protocol at 6, unchanged from 0.20.0 — no
embedder rebuild required, 0.18/0.19/0.20 hosts and clients mix
freely.

Notes authored ahead of the tag per docs/releases/README.md.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-27 19:25:47 +02:00
enricobuehler 0e0d5b8b4d chore(api): regenerate openapi.json — the stats description drifted
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`2c69cbda` rewrote StatsSample::mbps's doc comment (goodput → attempted
sealed wire bytes) without regenerating the snapshot, so
`openapi_document_is_complete_and_checked_in` fails on main today. Pure
regeneration, no API surface change: the description and the version stamp
are the only differences.
2026-07-27 19:04:20 +02:00
enricobuehler 6be865f33f fix(host): a host that is stopped hands the box's session back first
Until now the host had no signal handling at all: SIGTERM killed it
outright. That is fine for a host that owns nothing — but a managed
gamescope takeover owns the box's session, and on a mask-fragile display
manager (Nobara's plasmalogin) it has STOPPED that display manager for the
length of the stream. Killed there, the host leaves a box with no graphical
session and nothing left to restart it: the crash-restore state lives in
$XDG_RUNTIME_DIR, which logind removes along with the user manager, so not
even the next host start can heal it. `systemctl --user restart
punktfunk-host` mid-stream — or a package update doing it for you — was
enough to strand a box until someone reached a VT.

So SIGTERM and SIGINT now restore first and exit after. The restore runs on
a blocking thread (it shells out) under a 20s grace, well inside systemd's
TimeoutStopSec, and a host that took nothing over exits immediately.

`restore_takeover_now` is the synchronous sibling of the debounced
disconnect restore, and deliberately ignores the keep-alive policy the
latter honors: `keep_alive=forever` pins a session for the NEXT client,
which means nothing once the host that would serve them is exiting. Both
paths now share one `takeover_live()` predicate instead of repeating the
four-way "is anything ours" test.

Checked on Linux: clippy -D warnings on punktfunk-host + pf-vdisplay, tests,
rustfmt.
2026-07-27 19:04:20 +02:00
enricobuehler f3615f83a5 fix(gamescope): the takeover no longer kills the host it is running in
Field report, Nobara + 0.20.0: switching into Game Mode mid-stream
disconnects the client and the box never lights up again. His journal has
the whole mechanism, ten seconds apart:

  12:34:18.9  freed Steam: stopped the display manager for this stream
  12:34:29.0  systemd[1685]: Stopping punktfunk-host.service

Stopping the display manager ends the user's last login session. The
packaged host is a `systemd --user` unit, so logind then stops
user@1000.service once UserStopDelaySec elapses — 10s by default on Nobara
— and takes the host with it. The stream dies, the scheduled restore never
runs, and the display manager stays down with nothing left to restart it:
a black box that needs a VT to recover. Exactly the two symptoms reported,
and the intermittency is just whether an active Gaming Mode session was
there to trigger the takeover at all.

It never showed on the repro VM because lingering was enabled there for the
earlier sessionless tests (`Linger=yes` — confirmed on the VM today), which
is precisely the thing that breaks the dependency: logind keeps the user
manager alive with no session. Our KDE/GNOME/Arch setup guides already ask
for it; his box, following the KDE route, did not have it.

So the takeover now ensures lingering BEFORE it touches the display
manager: `loginctl enable-linger` directly (allow_active in logind's own
policy — verified working unprivileged on Nobara), else the packaged helper
gains a `linger` verb that enables it for PKEXEC_UID alone, never a
caller-named user. If neither works the takeover is refused with an
actionable error and managed degrades to attach — mirroring the box's own
session is strictly better than a screen that needs a VT. Hosts that cannot
be reached this way (root, a system unit) skip the check: the cgroup test
is a pure `cgroup_under_user_manager` with a unit test, matched against the
real shapes on a Nobara box (`user@1000.service/app.slice/...` vs a
`session-N.scope`).

Also documents the requirement in the gamescope guide's Nobara section.

Checked on Linux: clippy -D warnings, 78 tests, rustfmt; helper verified
with `sh -n`, and the linger enable/disable round-trip run live on the
Nobara VM.
2026-07-27 19:04:20 +02:00
enricobuehler eae1837a3a fix(gamescope): a managed takeover never waits on a dialog nobody can see, nor acts on a months-old sentinel
Two ways the Nobara DM-stop takeover could end a session and leave the box
dark, both found while triaging a 0.20.0 field report (managed round-trip:
"my client disconnects and my monitor doesn't turn back on", intermittent).
0.20.0 is the first release where that box runs the takeover for real —
before it, no package shipped the polkit privilege, so managed always
degraded to attach and never touched the display manager.

Privileged verbs are non-interactive now. `try_stop_display_manager` and
`restore_display_manager` try a plain system-bus `systemctl` first, and
without `--no-ask-password` that asks polkit for INTERACTIVE authorization.
On a box where the host runs inside the user's graphical session, polkit
hands that to the session's agent: a password dialog on the box's own
screen, which during a takeover is off or mid-switch. Nobody sees it,
nobody answers it, and the call blocks on the stream's own thread — the
capture-loss rebuild, or the restore worker — while the rebuild budget
burns. The takeover then lands after the session it was for already ended.
With the flag it fails immediately ("interactive authentication required"),
which is what both callers are already written for: the packaged pkexec
helper (allow_any, no agent needed) takes it from there.

A sentinel with no baseline is not a request. `session_select_requested`
read "no baseline recorded" as "the sentinel appeared during the session" —
but `~/.config/steamos-session-select` is a permanent file, so every box
whose user has ever switched sessions has one. The baseline was recorded
only after a SUCCESSFUL launch, leaving a real window: takeover succeeds,
launch fails, the client retries inside the 5s restore debounce (which the
retry cancels), and the honor gate fires on a months-old write — pushing
the box to the desktop the user never asked for, plus a 120s grace refusing
to relaunch game mode. Now the baseline is taken at takeover too (setting
STOPPED_DM is what arms the gate), and "never baselined" reads as no
request. `SESSION_SELECT_BASELINE` carries both states explicitly, and the
decision is a pure `sentinel_advanced` with a unit test for all six cases.

Checked on Linux: cargo check --all-targets, clippy -D warnings, 77 tests,
rustfmt.
2026-07-27 19:04:20 +02:00
enricobuehlerandClaude Fable 5 ba89b9fcd0 feat(tools): display-disturb learns the bench moves the field sessions needed
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Three upgrades from the on-glass rounds on .173/.221:

- `ddc-open` timing: the handle-ACQUISITION cost per monitor is reported even
  when it yields no physical handles — the poller's first contact with a
  virtual display, exactly what the DDC-fail-fast driver work changes; the
  old code silently skipped handle-less monitors, which on a streaming host
  in exclusive topology is every monitor there is.
- Monitors are labeled by GDI device name (\\.\DISPLAYn) so a virtual
  display and a panel are tellable apart in the correlation log.
- `extend` mode: one SDC_TOPOLOGY_EXTEND poke — re-activates every
  attachable display, i.e. the exact 'non-managed display re-activated'
  event the exclusive watchdog evicts. One shot, not a loop: trigger a
  reassert round, observe the recovery.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 17:52:31 +02:00
enricobuehlerandClaude Fable 5 622817954a fix(capture/win-display): a deactivated laptop panel is a named stall suspect, not a blind spot
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Field A/B (reporter, Legion 5 Pro hybrid, 2026-07-27): the ~2 s capture-stall
metronome IS the exclusive isolate's own doing — deactivating the laptop panel
leaves a dark-but-connected eDP head whose driver-level servicing disturbs the
capture path (~1.7-2.8 s period); `topology: primary` (panel stays active)
stopped it outright (16.3 stalls/min → 0). Our own .221 logged the identical
signature the day before. The detector then steered AWAY from the cause:
connected_inactive filtered to EXTERNAL physicals only, so the one display
that mattered — on a hybrid laptop, the default config — reported as `none`.

- TargetInventory: new `internal_panel` class bit (eDP/LVDS/embedded).
- connected_inactive_externals → connected_inactive_physicals: internal
  panels join the suspect list (virtual/indirect stay excluded); a nameless
  panel renders as "laptop panel".
- The below-OS METRONOMIC warn names the dark-panel case and its actual
  cures (`topology: primary`, `pnp_disable_monitors`) — the old text's
  "unplug it" prescriptions are impossible for an internal panel.
- ddc_power_off: a zero-ack sweep now says at INFO that the axis did nothing
  (internal panels have no DDC/CI) instead of silently no-op'ing.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 17:04:08 +02:00
enricobuehlerandClaude Fable 5 ab58fd2f0e feat(vdisplay/driver): DDC/CI against the virtual monitor fails fast
In exclusive topology the virtual display is the ONLY monitor on the desktop,
so monitor-control software (the Twinkle Tray / PowerToys PowerDisplay /
Monitorian class) aims its entire DDC traffic — brightness polls,
capabilities-string requests — at OUR monitor. There is no bus and no sink;
the only wrong answer is a slow one (a timeout-shaped failure occupies
win32k's physical-monitor path, serialized per monitor, for its full
duration). Register EvtIddCxMonitorI2CTransmit/Receive and answer every probe
with an immediate STATUS_NOT_SUPPORTED, making the virtual monitor the
cheapest thing on the "bus" to poll. (The receive DDI has no out-arg at the
callback — refusing synchronously refuses the whole transaction.) EDID needs
no equivalent: the OS serves descriptor queries from the blob supplied at
monitor creation without calling the driver.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 15:37:06 +02:00
enricobuehlerandClaude Fable 5 1945052e66 fix(capture/vdisplay): descriptor-following defers while a topology reassert is in flight
The exclusive-topology reassert's forced re-commit transiently bounces the
virtual display's mode; the descriptor poller can sample that EVICTION state
and recreate the ring at a mode the recovery chain is about to undo (field
log 2026-07-27 10:30:44Z: hdr=true → false → recreate → recovery restores
true → second recreate). New pf-win-display::topology_churn latch (deadline
semantics — self-expiring, so a lost release can never wedge descriptor-
following off): the watchdog holds it for interval+3s each fighting round and
releases on "stable again"; poll_display_hdr consumes samples but acts on
nothing while held — which also keeps the negotiated-depth pin-back from
issuing a CCD write mid-eviction, where it would fight the reassert itself.
The deliberate recreate_ring_in_place recovery path is unaffected.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 15:37:05 +02:00
enricobuehlerandClaude Fable 5 9e1a686795 feat(tools): display-disturb — deterministic display-stack disturbance generator
The stall-immunity bench needs both stall classes on demand, without a standby
TV or a monitor-tool storm: `ddc` replays the Twinkle-Tray/PowerDisplay-class
DDC/CI traffic (VCP reads, optional capabilities-string requests) through the
win32k I2C path; `modeset` re-commits the current mode with CDS_RESET — the
Level-Two modeset entry that idles the whole adapter with nothing Win32-visible
changing. Every op prints an epoch-stamped took_ms line so host.log stall
reports correlate line-for-line, and the op duration itself measures the
driver's service time per disturbance.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 15:24:20 +02:00
enricobuehlerandClaude Fable 5 19d6f79d2d feat(vdisplay/driver): the frame pump survives MMCSS refusal and outranks GPU contention
Two stall-immunity hardenings for the swap-chain drain thread (branch-2 of the
disturbance-immunity program — failures in OUR delivery leg, as opposed to
adapter-wide display servicing, which no priority survives):

- MMCSS registration fails under the restricted WUDFHost token on some boxes;
  the drain thread then ran UNPRIORITIZED — the whole display's frame pump at
  normal priority, starvable by DDC/HPD-servicing DPC pressure into
  multi-hundred-ms delivery holes. Fall back to TIME_CRITICAL.

- IddCxSetRealtimeGPUPriority (IddCx 1.9) raises the processing device above
  every regular application's GPU priority. Slot availability comes from
  raising the exported IddMinimumVersionRequired 4 → 10, which was overdue
  independently: the drain loop already calls ReleaseAndAcquireBuffer2 (1.10)
  unconditionally, so binding a pre-1.10 framework would dispatch past the
  populated IddFunctions table — with 10 an old framework fails the bind
  cleanly instead. The product floor is already Win11 22H2 (installer
  MinVersion=10.0.22621, whose framework is 1.10), so no supported system
  changes behavior.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 15:24:10 +02:00
enricobuehlerandClaude Fable 5 94f0207cbd feat(windows/client): logs persist — %LOCALAPPDATA%\punktfunk\logs\client.log
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The shell is a windows_subsystem binary and spawns punktfunk-session with
CREATE_NO_WINDOW + inherited stderr: a normal GUI/MSIX launch has no
console, so every log line — the shell's and the session's whole
receive/decode/present forensic trail — evaporated exactly when a user
hit something worth reporting. The 2026-07 PyroWave latency-sawtooth
report had to be triaged from host logs alone; the deciding evidence
(clock re-sync vs backlog-flush lines) lives client-side.

- New logfile module: %LOCALAPPDATA%\punktfunk\logs\client.log,
  the host's rotation convention (10 MB cap -> .old at next start, one
  generation), best-effort (no dir -> plain stderr, never a startup
  failure).
- The tracing subscriber tees to stderr AND the file (ANSI off — the
  file is what users send); startup logs the path.
- The spawned session's stderr is piped through the same tee,
  line-buffered — dev-terminal runs keep their interleaved output,
  GUI runs finally keep anything at all.
- The --console path and the punktfunk-console.exe MSIX shim forward
  the same way (a couch launch has no console either).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 12:51:11 +02:00
enricobuehlerandClaude Fable 5 2c69cbdab9 docs(host/stats): say what the stats actually measure — three field-triage traps
Three lines that each sent the 2026-07 PyroWave field triage down a wrong
path, made honest:

- The 'client accepts streamed AUs … will stream per-slice' log fires
  before the encoder exists and regardless of backend support (only Linux
  direct-NVENC implements chunked polling) — it now states the client
  capability only.
- StatsSample::mbps was documented as 'transmit goodput'; it is attempted
  sealed wire bytes at seal time — AU bytes + shard framing + FEC parity
  (+ PyroWave window padding), not reduced by socket send drops.
- The per-stage split's 'encode' stage is the poll() duration, which is
  ~0 by construction for synchronous backends (PyroWave encodes inside
  submit → its time shows as 'submit') — documented at the split's
  definition so 'encode 0.00' stops reading as an instrumentation hole.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 12:51:11 +02:00
enricobuehlerandClaude Fable 5 d8d8c6c43d fix(core/abr): the capacity probe's own overload no longer reads as session congestion
The startup speed-test probe deliberately overloads the link (2 Gb/s for
800 ms) to measure capacity. The report tick is suppressed while it runs
and the window anchors are rebased when it ends — but two residues leak
past the rebase: probe frames still pending in the reassembler age out as
frames_dropped for another ~120 ms (the loss-window fuse), and the burst
can latch flush_in_window (a jump-to-live it caused itself). Either one
reads as a SEVERE window: the controller backs off ×0.7 and — worse —
slow start ends at the first congestion signal, permanently.

That is precisely the 2026-07 field report's Automatic session: 20→14
Mb/s exactly one report tick after the probe, then a purely additive
+6 %/4.5 s crawl that took the whole 4.5-minute match to reach 308 Mb/s
on a link the probe had just measured at ~1.2 Gb/s. Slow start (doubling
per clean window to the probed ceiling, 'seconds instead of minutes')
never got to run.

The first post-probe report window is now discarded outright: no
LossReport (probe residue would also spike the host's adaptive FEC), the
standing-latency detector closes it as not-loss-free (its clean-run just
resets), and the ABR is fed nothing.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 12:51:11 +02:00
enricobuehlerandClaude Fable 5 b8b8ac336c feat(core/client): all-intra streams drain the frame channel to the newest AU
The pre-decode FrameChannel is strictly FIFO because H.26x reference
chains forbid mid-stream drops — falling behind is only recoverable via
the coarse jump-to-live thresholds (depth ≥6 sustained, or 400 ms behind
the capture clock) at the cost of a keyframe round-trip.

PyroWave has no reference chains: every AU decodes independently, so a
slow consumer can skip straight to the newest queued AU with zero
recovery cost. The pump now flags the channel all-intra for PyroWave
sessions and pop() drains to the newest, which caps any standing
pre-decode queue at ~1 frame structurally — the 2026-07 field report's
780M client could otherwise ratchet a real multi-frame backlog (and with
it the OSD latency) between those coarse thresholds.

Skips are counted separately from losses (they were delivered, just
superseded) and surfaced at debug on the report tick — the OSD 'lost'
line keeps meaning wire loss.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 12:51:11 +02:00
enricobuehlerandClaude Fable 5 6d1baa0add fix(pf-encode/pyrowave): the bitrate pin holds on the WIRE, not the raw bitstream
A datagram-aligned PyroWave session inflates the codec bitstream ×1.2–1.3
on its way to the wire — greedy packing of few-hundred-byte atomic block
packets into 1408 B windows zero-pads most window tails, plus the 4-byte
prefixes and FRAG chains. The 2026-07 field report's 1440p60 10-bit
"Automatic" pin of 407 Mb/s put a measured 550 Mb/s on a 1 GbE link;
nothing enforced the pin past the rate controller.

New shared WireBudget (pyrowave_wire.rs, both backends): tracks the real
per-frame AU/bitstream ratio as a ×1024 fixed-point EMA (prior ×1.25,
weight 1/8, clamped ×1.0–×2.0) and deflates the budget handed to
pyrowave's rate control by it, so the windowed AU lands on the configured
rate. Sealed-datagram framing (+4.5%) and FEC parity stay uncompensated —
H.26x sessions carry those on top of the configured bitrate too, and the
pin must mean the same thing for every codec.

Dense (non-chunked) sessions are untouched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 12:51:11 +02:00
enricobuehlerandClaude Fable 5 53640b8754 fix(core/clock): re-sync survives loaded links — floor baseline, spaced rounds, bounded staleness
The mid-stream clock re-sync starved on high-bitrate LAN sessions (2026-07
PyroWave-sawtooth field report, RX 9070 XT -> 780M @ 550 Mb/s): every batch
was judged against the CONNECT-TIME RTT, measured before the video data
plane existed, with a 2 ms floor — mid-stream control RTTs on a loaded GbE
link sit above that almost permanently, so batches were rejected for
minutes while the wall clocks drifted apart and the OSD e2e figure ramped
19->150 ms before snapping back on a lucky batch.

Three changes:
- Rounds are spaced 7 ms apart (stamped at send time, so the spacing never
  lands in the RTT). An 8-round batch used to complete inside ONE ~6 ms
  video burst — all rounds sampled the same congestion state; spacing walks
  them across the frame cycle so the min-RTT round finds a quiet gap.
- ResyncGuard replaces the static baseline: the guard band follows the best
  RTT the session has evidenced (connect RTT, then min over every completed
  batch — rejected ones included).
- Rejection streaks are bounded: after 3 consecutive rejections the best
  (min-RTT) batch of the streak is applied anyway. Its queueing bias is at
  most ~half its RTT; unbounded wall-clock drift costs more per minute.

Rejections now log at warn with the streak and floor — the starvation
signature is grep-able in exactly the logs users send.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 12:51:11 +02:00
enricobuehler 94b7a834cb fix(installer/windows): GameStream is opt-in, not on by default
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A user found this in their log and had never been offered a choice:

  WARN GameStream/Moonlight compat ENABLED (--gamestream): its pairing runs over
  plain HTTP and its legacy control encryption can reuse GCM nonces
  (security-review #5/#9) — an on-path LAN attacker could MITM pairing or
  recover input. Enable only on a TRUSTED network.

They were right. The `gamestream` task carried no `Flags: unchecked`, so it was
pre-ticked; and since a silent install takes the wizard's own task defaults
(1839d756), a winget install turned it on with no checkbox ever shown. The host
warns that this plane is a security downgrade on every single start, so having
the installer enable it by default cannot be squared with our own advice — least
of all on the path where nobody sees a wizard.

Now unchecked, matching `allowpublicfw`, the other task with a security
consequence. A default install therefore lands `PUNKTFUNK_HOST_CMD=serve`, the
native-only host; Punktfunk's own clients are unaffected, since the native
punktfunk/1 plane is always on. Unattended opt-in is `/MERGETASKS=gamestream`.

Scope, deliberately: this changes FRESH installs only. `GamestreamParam` already
omits the flag entirely unless `FreshHostInstall`, so no existing host has its
choice touched by an upgrade, and anyone relying on Moonlight today keeps it.
`DEFAULT_HOST_CMD` (the service's fallback when host.env carries no
PUNKTFUNK_HOST_CMD line at all) is deliberately NOT flipped here: the installer
always writes the line explicitly, so it does not affect a normal install, and
inverting it would silently disable Moonlight for anyone whose host.env lost that
line — a runtime regression that belongs in its own change, if at all.

Docs corrected everywhere they stated the old default, since three of them now
told users the opposite of what ships: the winget Agreement shown BEFORE install
(it said "enabled by default" and gave the opt-OUT override), the Windows
packaging README, and host.env.example. The `--override` example in the installer
manifest is inverted with it (`/MERGETASKS=gamestream` to add, `!` to remove).

Verified: [Tasks] + [Code] compile with ISCC 6.7.1 on the windows-amd64 runner
(all optional features defined), and the winget catalogue rebuilds and passes
29/29 with the edited manifests.
2026-07-27 12:26:47 +02:00
enricobuehler 4114dfeff7 fix(winget): the Log switch used |LOGPATH|, which winget never substitutes
Second field report on 0.20.0's winget path, and independent of the conflict
abort in 37781a61: an INTERACTIVE install through UniGetUI dies before the
wizard with Inno's "Error creating log file: The filename, directory name, or
volume label syntax is incorrect."

`<LOGPATH>` is winget's own token and the only spelling it replaces — the
schema this manifest declares says so verbatim ("<LOGPATH> token can be included
in the switch value so that winget will replace the token with user provided
path"). We shipped `|LOGPATH|`, which is not a token, so winget passed the
literal string to Inno; `|` is not legal in a Windows filename, and Inno refuses
before doing anything else.

Worse than the conflict abort in two ways: it is not confined to silent installs
— it fires in EVERY mode for any caller that requests a log — and UniGetUI
requests one by default, so a GUI user cannot install at all. Confirmed against
the live source, which is serving the broken switch to everyone right now:
  curl -s https://winget.punktfunk.unom.io/packageManifests/unom.PunktfunkHost
  → "Log": "/LOG=\"|LOGPATH|\""

Guarded by the suite that exists for exactly this class of defect (a wrong
response shape does not fail loudly — winget just says "no package found"). The
new check accepts an absent Log switch, requires <LOGPATH> when present, and
rejects any |TOKEN| spelling. Mutation-verified: restoring |LOGPATH| fails the
check naming the offending value, and the corrected manifest passes 29/29.

⚠ Fixing the template does NOT fix the live catalogue: it is derived from the
manifest trio attached to each release, so the corrected switch only reaches
users when a release carries it.
2026-07-27 10:28:59 +02:00
enricobuehler 37781a610f fix(installer/windows): only a host that will actually RUN is a conflict
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Field report within hours of 0.20.0 (HitFrostbite): `winget install
unom.PunktfunkHost` fails with "Installer failed with exit code: 1",
0x8A150006, after the hash verifies and the install starts.

That is Setup aborting on purpose. `StreamHostPresent` counted a conflicting
host as present if its SCM service key existed at ANY start type, OR if a bare
Program Files\<Name> directory existed — so a disabled service, or a folder left
behind by an uninstall, read as a live conflict. 3d893013 then made the warning
a SuppressibleMsgBox defaulting to IDNO so unattended installs could not hang on
it; under winget's /VERYSILENT /SUPPRESSMSGBOXES that default aborts
InitializeSetup, and Inno exits "failed to initialize" = code 1. Net effect:
anyone with Sunshine on disk — the exact audience most likely to migrate — could
not install via winget at all, with no visible reason.

The other candidate for exit 1 is excluded rather than assumed: the manifest
declares MinimumOSVersion 10.0.22621.0 matching the script's MinVersion, so
winget refuses an unsupported OS BEFORE downloading, and the report shows the
hash verified and the install starting. The conflict check is also the only
`Result := False` in InitializeSetup.

Detection now keys on the service's `Start` value (0 boot / 1 system /
2 automatic / 3 manual / 4 disabled), counting only 0-2 — a host that comes up
on its own is the only kind that can take the GameStream ports or load a second
virtual-display driver. Directories no longer count at all: they were the
noisiest signal and the one that survives an uninstall. This makes the installer
agree with the tray, which dropped its always-on warning over a merely-INSTALLED
Sunshine in this same release (3e782852) for exactly the same reason. The
message now says "installed and set to start automatically" and offers disabling
the service as a remedy, both of which are what is actually detected.

A conflicting host running as a plain user process is deliberately not detected:
pure Pascal cannot enumerate processes, it is a runtime rather than install-time
condition, and the host already reports it via the `punktfunk::detect` startup
warning, `detect-conflicts`, and /api/v1/local/summary.

Verified by compiling the [Code] section with ISCC 6.7.1 on the windows-amd64
runner (WithWeb defined, as CI does). That caught two defects in my own first
draft that review would not have: a continuation line STARTING with #13#10, which
ISPP reads as a preprocessor directive ("Unknown preprocessor directive", compile
aborted), and `{commonpf}` written inside a `{ }` comment, which closes it early
since Inno comments do not nest. Both are noted at the sites so they are not
reintroduced.
2026-07-27 09:00:34 +02:00
enricobuehler ec9aa415f6 chore(web): override brace-expansion to 5.0.8 — clears GHSA-mh99-v99m-4gvg
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bun-audit has been red since the advisory published, so it was already failing
before v0.20.0 was cut (same failure on 0323158a). High-severity DoS: unbounded
expansion length causing an OOM crash. All three paths are dev tooling —
orval→typedoc→minimatch, @storybook/react-vite→glob→minimatch, and
nitro-v2-vite-plugin→nitropack→archiver→archiver-utils→glob→minimatch — so
nothing shipped to a user was exposed, but the leg gates every lockfile change.

Done as an `overrides` entry, joining the eight already there for exactly this
purpose. `bun update brace-expansion` is NOT the fix and was reverted: for a
package that is only transitive it adds a spurious DIRECT dependency, and it
does not even resolve the advisory — it hoists 5.0.8 for the new direct dep and
leaves `minimatch/brace-expansion` pinned at the vulnerable 5.0.7.

The advisory's affected range is `<= 5.0.7` across ALL majors with 5.0.8 the
only patched version, so the two nested 2.1.2 copies had to move too — a major
bump for consumers declaring ^2.0.1/^2.0.2. Checked rather than assumed: 5.0.8
is dual ESM/CJS with a real `require` branch in its exports map (2.1.2 was
plain CJS), so those consumers still resolve. Proven by building: the nitro
build is itself one of the forced consumers.

Verified: `bun audit` reports no vulnerabilities, both nested entries are gone
from the lock, and the full CI web sequence is green —
`bun install --frozen-lockfile --ignore-scripts`, `bun run build`, `bun run lint`.
2026-07-27 07:32:08 +02:00
enricobuehler 24d2f97eae fix(ci/winget): forward GITHUB_REF_NAME into the remote shell
The catalogue-verify step has failed on every stable tag since it landed,
v0.20.0 included: `bash: line 6: GITHUB_REF_NAME: unbound variable`, twice,
then exit 1.

`env:` populates the RUNNER's environment. appleboy/ssh-action executes its
`script` on the REMOTE host over SSH, which inherits none of it — the action
has a separate `envs:` input naming the variables to forward. Without it the
`set -u` at the top of the script turns the first expansion into a fatal, and
the two `curl`s either side report only the collateral: `Failed writing body`
is curl losing its pipe when the `grep` it was feeding died.

The failure is maximally misleading, because everything it guards ALREADY
WORKED: the catalogue is built, tested and shipped in the preceding steps, and
only the proof-of-serving fails. Confirmed by hand against the live source
during the v0.20.0 release — it serves unom.PunktfunkHost 0.20.0 correctly.

The pattern was already right everywhere else: both "Pull and start docs" steps
(deploy-services.yml, docker.yml) pair `env:` with `envs:`. A sweep of the
other three ssh-action steps found no further instance — the remaining two pass
no variables at all.
2026-07-27 07:31:55 +02:00
enricobuehler c9b8f666cd docs(release): winget needs its source added first — say so
Reported within an hour of the announcement: `winget install unom.PunktfunkHost`
answers "no package found". That is correct behaviour, not a broken package —
Punktfunk is served from its own REST source, and winget only searches sources
it has been told about. The notes said "after adding Punktfunk's package source
once" without ever giving the command, so there was no way to act on it.

Both commands are now spelled out, the `winget source add` one flagged as
needing an Administrator terminal (it does), and the failure mode is stated
explicitly so someone who hits it recognises it rather than filing it as a bug.

The lead-in is untouched, so the Discord embed for v0.20.0 stays accurate and
this needs no re-announcement — the release body is re-synced from this file.
2026-07-27 07:31:37 +02:00
enricobuehler 35b6c835fd docs: on a gamescope session the display outranks the end-game setting
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On-glass on .41: with `game_on_session_end: keep` — "leave it running, nothing
is ever closed" — a deliberate stop ended the game, and a drop ended it ~14 s
later. Both times the LEASE did the right thing (no `ending the launched game`
line); the game died because the virtual display was torn down, and a nested
launch runs inside that gamescope.

So on a dedicated gamescope session the game's lifetime IS the display's, and
keep-alive decides it — not this setting:

  * a deliberate stop skips the linger by design, so the game goes at once,
  * a drop lingers the keep-alive window, then takes the game with it,
  * only keep-alive Forever actually keeps it — and `always` still ends it at
    the reconnect window, which is the documented precedence and was verified
    (a `forever`-pinned display released at grace expiry, 60.006 s).

That makes the console's promise untrue on the most common Linux setup, so the
card now says so for every option rather than only warning about `always`, and
the docs get the three cases as a table. Worded so a non-gamescope host reads it
and moves on — a desktop-session launch is an ordinary process and none of it
applies.

Not changing behavior here: making `keep` pin the display would pit it against
"a stop must not leave a ghost display", and which wins is a product call rather
than something to decide silently mid-test.

web: codegen + tsc + biome clean, en/de complete. docs-site: build + tsc clean.
2026-07-27 01:43:40 +02:00
enricobuehler 39a9f09f04 fix(mgmt/web): the running-game cover slot says "game" when there is no art
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Rendered the Dashboard stories headlessly and looked at them, which is how this
turned up: with no cover the slot was an empty grey rectangle, reading as
something that failed to load rather than something absent.

Plenty of rows will never have art — an operator-typed command has no catalog
entry behind it, a custom entry may carry none, and nothing does until
`/library` has loaded. The slot keeps its fixed size so rows stay aligned when
only some titles have covers; it just holds a gamepad glyph instead of nothing.
2026-07-27 00:47:05 +02:00
enricobuehlerandClaude Opus 5 f57fc85d34 chore(release): bump workspace version to 0.20.0
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117 commits since v0.19.2. Minor rather than patch: the headline is the
session⇄game lifetime binding on both planes and both platforms — the
stream ends when the game does, and optionally the reverse — plus
library metadata, winget packaging for the Windows host, a 64-bit ARM
Linux client, headless `--pair` enrolment, DRM card selection for the
compositor-less presenter, and the ABR/latency de-escalation work, which
changes runtime behaviour on every session.

Wire protocol stays at 2, the embeddable C ABI at 13 and the Windows
virtual-display driver protocol at 6, so 0.18/0.19/0.20 hosts and
clients mix freely and no embedder rebuild is required. The new GameMeta
library fields are optional and flat on the wire.

Notes authored ahead of the tag per docs/releases/README.md, so the
release is born with a body.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 00:33:45 +02:00
enricobuehlerandClaude Fable 5 0323158a3e fix(vdisplay/gamescope): a fresh dedicated launch streams from the first second
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A freshly spawned headless gamescope never delivered a single PipeWire
buffer when a game was launched: gamescope only composites (and only on a
composite pushes a capture buffer) when a client paints, and a nested
Steam bootstrap paints nothing until its UI's first frame — far longer
than the 10 s first-frame budget. The native plane's retry ladder then
killed the half-booted Steam on every attempt and started from zero; the
GameStream plane died on its single wait. Reused live displays worked,
which pointed away from the real cause (root-caused on .41 with a raw
pw_stream probe: `sleep infinity` nested → 0 buffers ever, `vkcube`
nested → 60/s immediately).

Every bare spawn now backgrounds the host's own splash client
(`gamescope-splash`, hidden subcommand) beside the nested app: a dark
window with a subtle breathing bar painted at ~2.5 Hz — damage from the
first second, so capture gets its first frame within the budget on both
planes. In `--steam` mode gamescope composites only windows whose appid
is in the root `GAMESCOPECTRL_BASELAYER_APPID` list (live-proven: even a
painting vkcube gets zero composites without it), so the splash declares
itself as the Steam UI (STEAM_GAME=769) and seeds the baselayer iff
unset; Steam's own rewrite at game launch hands composite focus to the
game with no action on our side. PUNKTFUNK_GAMESCOPE_SPLASH=0 is the
escape hatch.

The dedicated Steam launch is also shaped with `-gamepadui` instead of
`-silent`: the nested Steam is Big Picture — the identity gamescope's
`--steam` integration is built around — so the boot shows the gamepad UI
instead of the desktop client window flashing through the stream, and
gamescope's focus rules (game outranks the Steam UI appid) cover what
`-silent` was working around.

On-glass on .41 (Bazzite, RTX 5070 Ti, gamescope c31743d): cold connect +
Balatro launch delivers frames on the first attempt on both a cold and a
torn-down-then-fresh spawn; Big Picture boot → game handover confirmed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-27 00:28:59 +02:00
enricobuehler 980b399ea8 test(session/gamelease): the live-process test waits out the shim window
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Its child is `sh` running a script that `exec`s a binary outside the install
dir, so neither the image path nor the command line carries the directory — the
host's own child is the only signal there is. Which is exactly the case the shim
window now gates: a live child that might still turn out to be a launcher is not
called the game until that window passes.

So "running" legitimately arrives up to SHIM_WINDOW later than it used to, and
the assertion at 1.5 s was asserting the old behavior. Waiting it out is the
point now, not an accident of timing.

The delay is the deliberate cost of the fix: until the window passes there is no
way to tell "the child IS the game" from "the child is about to hand off". It
shows as a few seconds of `launching` in the console, and only for a title whose
store gave us signals.

.25: the ignored live test passes (Child -> Running -> terminate via the
SIGTERM->SIGKILL group ladder -> Exited, session-end action correctly NOT fired),
full suite 305 passed.
2026-07-26 22:33:42 +02:00
enricobuehler d5857abd91 fix(session/gamelease): a launcher handing off is not the game exiting
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On glass (.41), launching any Steam title over the compat plane ended the
session ~7 s later, before the game had started:

  launched app  command=steam steam://rungameid/2379780  pid=12699
  watching the launched game  kind="child"
  the launched game is running  kind="child"  procs=0      <- 3 ms in, zero game procs
  the launched game exited  ->  session ended

Linux launches are `Child` leases: the host spawns the launcher itself. The
watcher counts "my child is alive" as the game running, so the lease left the
waiting phase on its FIRST poll — and the shim reclassification lives in that
phase, so it never got to run. When `steam` handed off and exited, that read as
the game exiting.

The design always called for the shim window ("never fires B from a shim exit")
and the code implements it; the lease had simply moved past where it applies. So
when the store gave us signals to recognize the real game by, a bare live child
no longer counts as the game until that window has passed. With no signals the
child is all we have and still counts immediately — custom commands are
unchanged.

Windows could not reproduce this: it holds no child, so its leases are always
`Matched`, and the whole .173 pass was structurally blind to it. Both planes on
Linux were affected — which is most of the audience for this feature.

Also fixes the live-process fixture, which was CI-red for an unrelated reason:
it copied `/bin/sleep` to a file named `game`, and modern coreutils (uutils on
Ubuntu 25.10+, busybox elsewhere) is a MULTI-CALL binary dispatching on argv[0]
— under any other name it exits instantly, leaving nothing in /proc and looking
exactly like a broken matcher. Verified by A/B: the same test fails identically
on a tree predating these changes.

.25 (Ubuntu 26.04): 305 passed, 0 failed.
2026-07-26 21:24:12 +02:00
enricobuehler 0c261de636 ci(plugin-kit): quote the step name that contains a colon
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`- name: Repair the file: dependency (…)` is not valid YAML — the unquoted
`file: ` reads as a second mapping key — so the workflow has been unparseable
since it was added, which is why re-pushing the tag never triggered a run and a
manual dispatch 500'd. I had put that down to a Gitea tag quirk; it was this.

The failure is invisible from the repo side: nothing validates workflow YAML on
push, and an unparseable workflow simply never runs.
2026-07-26 20:45:58 +02:00
enricobuehler 6e07d063c3 fix(session/gamelease): Windows had no launch reference, so it adopted old games
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On glass (.173), with a copy of Buckshot Roulette already running: a session
launched the same title, Steam focused the existing instance rather than
starting one, the lease adopted THAT process — and a deliberate stop closed the
player's pre-existing game.

That is the one thing the design says must never happen. The rule was written
and the matcher implements it; the reference instant it filters against just
never arrived. `procscan::launch_stamp` supports Windows, but the wrapper every
launch site calls was gated `#[cfg(target_os = "linux")]` and answered `None`
everywhere else — and `None` doesn't fail, it turns the filter OFF (`find` skips
it), so every process under the install dir became adoptable.

Windows is where this matters most: the host runs as SYSTEM and can see every
process on the box, which is why `procscan/windows.rs` calls rule 1
load-bearing rather than a nicety. Both planes were affected.

No unit test could have caught it — the Linux fixtures pass an explicit
`min_start`, and the Windows live test passes `None` deliberately. So the guard
added here asserts the reference EXISTS wherever processes can be matched, which
is the shape of the failure: silent, and invisible from downstream.

.133: 282 passed (+1), same 4 environmental native::tests failures.
2026-07-26 20:30:20 +02:00
enricobuehlerandClaude Fable 5 dff63b2a29 fix(encode/nvenc): a visible cursor no longer serializes submit — the blend goes stream-ordered
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Report: iPad on a gamescope/NVIDIA 120 fps session capped at ~80 fps with
repeat_fps 0, zero loss, capture 0 µs, ASIC 15 µs — and submit p50 at
10.2 ms, ~81 % of the loop period. Under gamescope the host composites
the live pointer into EVERY frame, and a cursor-bearing frame forced the
CPU-synced submit path: a blocking CUDA copy plus a fence-waited Vulkan
blend, both exposed to the running game's GPU load. The "games hide the
cursor" assumption the gate relied on does not hold under gamescope.

The blend is now stream-ordered end to end. VkSlotBlend exports a
timeline semaphore (VK_KHR_timeline_semaphore + external_semaphore_fd)
into CUDA (cuImportExternalSemaphore, new dlopen entries): the enqueued
copy signals it on the encode thread's copy stream, the blend submission
waits for and advances it on the Vulkan queue, and a CUDA-side wait
orders the encode after the blend on the session's bound IO stream — no
CPU sync anywhere, so cursor frames keep the stream-ordered fast path.
Each ring slot gets its own command buffer + descriptor set (written
once) so several ordered blends can be in flight; cursor-bitmap uploads
and teardown quiesce through the timeline. Drivers without the timeline
export keep the previous CPU-synced blend, and any bring-up or per-frame
failure still degrades to "no cursor", never a dropped frame.

Also: the blocking multi-plane copies (the escalated/pipelined mode and
the non-stream-ordered fallback) now enqueue every plane and pay ONE
stream sync instead of one per plane (NV12 2→1, YUV444 3→1) — each
exposed wait costs scheduling latency under GPU contention, which is
what makes the escalation's blocking copies self-reinforcing.

Verified on the RTX 5070 Ti box (driver 610.43.03): all 12 nvenc_cuda
on-hardware smokes green, including the new
nvenc_cuda_cursor_blend_stream_ordered (6 cursor AUs, all ordered,
across a bitmap-serial flip); host suite 301/301; clippy --all-targets
-D warnings clean; struct layouts of the hand-flattened cuda.h params
asserted in tests.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-26 20:05:27 +02:00