enricobuehler
4543a3f529
The client now advertises VIDEO_CAP_10BIT|HDR and carries the result all the way to glass: - csc_rows is bit-depth exact (10-bit limited code points differ from 8-bit by ~half a code) and folds in the P010/X6 MSB-packing factor; new 10-bit white/black tests. - The CSC shader grows a params block: mode 0 passes the transfer through (SDR as-is, or PQ onto an HDR10 swapchain); mode 1 tonemaps PQ→SDR in-shader (ST.2084 EOTF, 203-nit reference white exposure, BT.2020→709, soft maxRGB rolloff, sRGB encode) for desktops without an HDR surface. PUNKTFUNK_TONEMAP_PEAK tunes the rolloff. - The presenter probes VK_EXT_swapchain_colorspace + an HDR10/ST.2084 10-bit surface format and flips modes in-band with the stream's PQ signaling: fence-quiesce, then CSC pass + video image (10-bit A2B10G10R10 intermediate — PQ in 8 bits bands) + overlay pipe + swapchain rebuild through the deferred-destroy rules. - P010 decodes through all three paths: Vulkan Video (X6 multiplanar pool, R10X6 plane views), VAAPI dmabuf (R16/RG1616 plane imports), software (swscale as before). - session pump advertises the caps; the host still gates Main10 behind its PUNKTFUNK_10BIT policy. Probed on glass hardware: the KDE/NVIDIA surface exposes A2B10G10R10+HDR10_ST2084, so true PQ passthrough is available there. Known v1 gaps: software-decode PQ shows untonemapped (8-bit RGBA carries the transfer baked); the SDR overlay composites unscaled onto an HDR10 surface (dim OSD); no vkSetHdrMetadataEXT yet. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
52 lines
3.0 KiB
Markdown
52 lines
3.0 KiB
Markdown
# 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 (Ctrl+Alt+Shift+S toggles, `--stats` forces 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 toggles both the OSD and 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):
|
|
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;
|
|
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|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).
|