enricobuehler
35d97ae6ac
design/windows-parallel-virtual-displays.md (display-management Stage 7 / §6.6): N simultaneously-live pf-vdisplay monitors, one sealed ring each, every idd-push-security invariant preserved per-ring. - proto v3: SharedHeader._pad → target_id — the ring NAMES its monitor, host-stamped before the magic; the driver publisher refuses a cross-bound ring via the shared, unit-tested frame::check_attach (new DRV_STATUS_BIND_FAIL — the gamepad pad_index validation applied to frames, invariant #10); the host's wait_for_attach surfaces the refusal loudly and self-checks its own stamp. - manager: the one-monitor MgrState becomes a slot map keyed by the client's identity slot (0 = anonymous/GameStream); per-slot reconnect + dead-WUDFHost preempts, slot-scoped begin_idd_setup (a different identity is an admission question, never a preempt), ONE device-level watchdog pinger, per-slot /display/state + /display/release. - group topology: isolate_displays_ccd takes the managed target SET (a sibling slot is never deactivated); SavedConfig + the DDC/PnP axes move to the group record (first-in captures, last-out restores); desktop layout via CCD source origins from the pure layout::arrange (auto-row default, manual pins win), re-applied on create + reconfigure. - admission: the Windows separate→reject override now sits behind the PUNKTFUNK_WIN_SEPARATE=1 validation hatch (the wedge it guarded is structurally gone — a second identity gets its own monitor + ring; default flips in W5 after soak); max_displays and NVENC session-unit budgets decline an unaffordable display AT admission; kick_dwm_compose is process-globally throttled and per-display — cursor jump + 35 ms dwell (a sub-tick jump composes nothing; DWM reads dirties from current state at the next vsync tick). On-glass on the RTX box: V1/V2/V4/V5/V6/V9 green — two paired clients on two monitors streaming ~60 fps each with zero mismatches and zero bind failures, churn-hammer clean (no 0x80070490), per-ring mode-change recreate leaves the sibling untouched, typed budget rejection, fault-injected cross-bind refused loudly with the sibling undisturbed. V7: WUDFHost-kill shared fate is clean; in-process device recovery is a known follow-up (the retired-never-closed control handles block the adapter cycle — reset-pf-vdisplay.ps1 recovers). DWM composes two IDD monitors concurrently at 60 fps — the plan's load-bearing unknown, answered yes. Also carries the client-HDR EDID forwarding that shared this working tree (Hello::display_hdr → AddRequest luminance tail → the monitor's CTA-861.3 HDR block, PUNKTFUNK_CLIENT_PEAK_NITS hatch) and the Deck client fixes (40 ms rumble keep-alive with 1-LSB jitter, HDR self-diagnosing presenter warn, flatpak HDR env). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
punktfunk-session
The Vulkan session binary: one stream per invocation in an SDL3 window — no UI toolkit,
no widgets, terminal stats. The power-user / gamescope stream client, and the stage-2
presenter of the Linux client re-architecture (punktfunk-planning:
linux-client-rearchitecture.md).
punktfunk-session --connect host[:port] [--fp HEX] [--launch id] [--fullscreen] [--stats]
punktfunk-session --browse host[:port] [--mgmt PORT] [--fullscreen]
--browse opens the console game library (the Skia coverflow over the animated aurora)
instead of connecting: A launches the focused title as a stream in the same window,
session end returns to the library, B quits (Gaming Mode returns). Paired hosts only —
pairing is the desktop client / Decky plugin's job. PUNKTFUNK_FAKE_LIBRARY=<file.json>
feeds canned entries with no host (portrait paths starting with / load from disk).
Reads the same identity / known-hosts / settings stores as the desktop client
(punktfunk-client) — pair there (or via its headless --pair) first; this binary never
connects to a host it has no pinned fingerprint for (--fp HEX overrides the store).
Stdout is the machine interface: {"ready":true} after the first presented frame,
stats: … once per second while the overlay tier isn't Off (always the full detailed
text, whatever the OSD shows; --stats forces the overlay on), one
{"error"|"ended": …} JSON line on the way out. Logs go to stderr. Exit codes: 0
clean end, 2 connect failed, 3 trust rejected / pairing required, 4 presenter
init failed.
In-stream keys match the desktop client: click captures input (Ctrl+Alt+Shift+Q releases), Ctrl+Alt+Shift+D disconnects, F11 toggles fullscreen; the controller escape chord (L1+R1+Start+Select, hold to disconnect) works the same.
The default build carries the Skia console UI (ui feature): the stats OSD and capture
hint render in-window. Ctrl+Alt+Shift+S cycles the OSD tier live — Off → Compact (one
line: fps · latency · Mb/s) → Normal (mode + end-to-end percentiles) → Detailed (decoder
path + per-stage latency equation); any tier but Off also emits the stdout mirror.
--no-default-features is the ~5 MB power-user build — same streaming, stats on stdout
only, no Skia anywhere in the dependency tree.
Decode follows the Settings preference (auto: Vulkan Video → VAAPI → software on Linux,
Vulkan Video → D3D11VA → software on Windows): FFmpeg's Vulkan Video decoder runs on the
presenter's own device where the stack supports it (every vendor, zero copy); VAAPI
dmabufs import per-plane elsewhere (D3D11VA textures on Windows); software is the
universal fallback. 10-bit Main10 and HDR10 are advertised
(VIDEO_CAP_10BIT|HDR): P010 decodes through all three paths, and PQ streams present
on an HDR10/ST.2084 swapchain when the desktop offers one (KDE HDR, gamescope) or
tone-map in-shader to SDR when it doesn't (PUNKTFUNK_TONEMAP_PEAK tunes the rolloff,
default ≈1000 nits). The host still gates the upgrade behind its PUNKTFUNK_10BIT
policy.
Debug/bisect knobs: PUNKTFUNK_DECODER=vulkan|vaapi|d3d11va|software, PUNKTFUNK_PRESENT_MODE= mailbox|immediate (default FIFO), PUNKTFUNK_VK_DEVICE=<index> (multi-GPU), and
PUNKTFUNK_HW_FAULT=import (fault every VAAPI dmabuf import — proves the three-strike
demotion to software on healthy hardware).