The support matrix said the desktop clients' Full chroma switch "has no effect today" and that only the Apple client asks for 4:4:4. Both stopped being true in July: `clients/session/src/main.rs` advertises VIDEO_CAP_444 whenever the setting is on, deliberately with no client-side probe, because every desktop decode rung can display full chroma — the Vulkan presenter samples the 2-plane 4:4:4 pool formats and swscale converts for the software rung. So Linux, Windows and Apple all ask; Android is the one that genuinely doesn't implement it. The other half was HDR. `9f72a3b6` gave the Windows IDD-push capturer a packed 10-bit BT.2020 PQ RGB output, so NVENC encodes HEVC Main 4:4:4 10 and the two compose — the matrix still said "4:4:4 and HDR together is refused", and hdr.md still called PyroWave the only exception. Linux is the side that keeps the trade: handshake.rs resolves the depth back to 8 for a 4:4:4 session, so full chroma wins and the stream is SDR. Three cells move ❌ → ⚠️ rather than ✅ on purpose. The client half is unconditional, but the host half is not: HEVC 4:4:4 means an NVIDIA host, or PyroWave on any vendor. The notes say which, and point at the stats overlay's `4:4:4→4:2:0` tag — this negotiation is the one that fails loudly. Also: C ABI version 13 → 14; PyroWave's ≈8K 4:4:4 block-index ceiling now has a note; and the roadmap no longer calls Intel 4:4:4 a hardware limit, which the matrix and vaapi.rs both contradict — VCN can't, VAAPI hasn't. Spot-checked and left alone as still accurate: the Linux client clipboard stub, VAAPI declining 4:4:4, Android having no 4:4:4 at all, and the wire / driver / gamepad-channel versions.
punktfunk-docs
The Punktfunk documentation site: Fumadocs on TanStack Start (Vite + Nitro/bun preset).
Content lives in content/docs/ as .md/.mdx. This site is the source of truth
for the user-facing guides; design rationale lives in the internal punktfunk-planning repo.
API reference
/api renders the host's management REST API as an interactive
Scalar reference (linked from the top nav, the docs
sidebar, and the landing page). It reads public/openapi.json — a
snapshot of the repo's generated spec. Refresh it after a management-API change:
# from the repo root — regenerate the spec, then copy the snapshot in:
cargo run -p punktfunk-host -- openapi > api/openapi.json
cp api/openapi.json docs-site/public/openapi.json
Nothing in CI diffs the two, so the snapshot goes stale silently — that manual cp is the only
thing keeping them in sync. Before publishing docs, check that they match:
diff <(jq -S . api/openapi.json) <(jq -S . docs-site/public/openapi.json)
That should print nothing. Right now it doesn't: the committed snapshot predates the
/api/v1/update/check, /api/v1/update/apply and /api/v1/update/status endpoints, so the
published /api reference is missing the host self-update surface — re-copy it.
Develop
bun install
bun run dev # http://localhost:3001 (docs at /docs)
CI gates every change on bun run build followed by bun run lint (the TypeScript typecheck), in
that order — the build emits the .source typegen the typecheck imports. Run both before you push.
Build & serve
bun run build
bun run start # serves .output/ via Bun
Layout
source.config.ts Fumadocs MDX collection (content/docs)
content/docs/ the docs content (.md/.mdx) + meta.json nav
src/
routes/
__root.tsx RootProvider + html shell
index.tsx landing page
docs/$.tsx catch-all docs renderer (Fumadocs DocsLayout)
api/index.tsx Scalar API reference (reads public/openapi.json)
api/search.ts Orama search endpoint
lib/source.ts Fumadocs loader over the generated collection
lib/layout.shared.tsx shared nav chrome
components/mdx.tsx MDX component map
styles/app.css Tailwind 4 + Fumadocs preset