enricobuehler
d6818263ce
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.
11 lines
405 B
Plaintext
11 lines
405 B
Plaintext
# gamescope raises its own scheduling priority; without CAP_SYS_NICE it still runs, just with
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# worse frame pacing and a warning per launch. Same capability Arch's own `gamescope` package sets
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# — set here too so our binary behaves identically to the one it stands beside.
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post_install() {
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setcap 'CAP_SYS_NICE=eip' usr/bin/punktfunk-gamescope 2>/dev/null || true
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}
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post_upgrade() {
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post_install
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}
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