enricobuehlerandClaude Fable 5 19392918ff feat(gamescope/hdr): HDR is attempted by default and every install path ships the patched gamescope ...

Field report (RX 5700 / SteamOS): 10-bit HEVC "unsupported" — but the GPU was
never the blocker (RADV probed Main10 fine on that box). The session stayed SDR
because stock gamescope offers no 10-bit PQ capture formats and nothing shipped
our pipewire-hdr build outside the Bazzite sysext, while PUNKTFUNK_GAMESCOPE_HDR
additionally defaulted off everywhere. Close all three gaps:

- PUNKTFUNK_GAMESCOPE_HDR now defaults ON (explicit-off grammar, the flip the
  config comment planned post-canary). Safe by construction: the +pfhdr banner
  probe, managed-spawn term, and client 10-bit cap keep stock-gamescope boxes on
  the exact 8-bit path. The nix module's gamescopeHdr (default true now) only
  controls whether the patched binary is on PATH; it no longer sets the env.
- SteamOS: new scripts/steamdeck/build-gamescope.sh builds the HDR gamescope in
  the same pf2 trixie distrobox (apt dep list validated by a full build in a
  debian:trixie container), installs ~/.local/bin/punktfunk-gamescope, and
  maintains PUNKTFUNK_GAMESCOPE_BIN in host.env ONLY while the binary passes its
  on-glass --version/+pfhdr check — a stale absolute override would break
  session spawning, not just HDR. Wired into install.sh (§3b), update.sh
  (retrofit), and rebuild-check.sh (ldd-probes it like the host binary).
- Arch: build-sysext.sh gains a --gamescope fold-in (banner-verified by
  execution, host-image-only), and punktfunk-host optdepends the companion.
  Deliberately NO CI-published host sysext: per the 2026-07-22 packaging
  verdict a prebuilt SteamOS host breaks on A/B soname bumps (and /var is
  per-partition-set), so arch.yml records that instead — SteamOS hosts use the
  distrobox flow above.

Also fixes a latent bug that made build-sysext.sh fail every invocation as
documented: a literal `}` inside `${1:?usage …{host,client}…}` terminates the
expansion early and corrupts $PKG (caught by the new synthetic-package test,
which also covers the fold-in, the unmarked-gamescope refusal, and the
client-image guard).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-31 13:50:31 +02:00

..

docs

feat(gamescope/hdr): HDR is attempted by default and every install path ships the patched gamescope

2026-07-31 13:50:31 +02:00