Five pages asserted "gamescope's capture output is 8-bit" as a flat fact. It is
a fact about the STOCK binary, so say that instead, and say what to install to
change it: a new "HDR on gamescope" section covering the extra package, the two
knobs, what has to line up for a session to go HDR at all, and the two things
that surprise people — SDR content rides the same PQ stream at
`--hdr-sdr-content-nits`, and AMD/Intel HDR sessions currently lose the
composited pointer (the encode path that carries 10-bit is the one that cannot
blend it).
The roadmap's "parked / blocked" entry keeps the half that is still blocked
(Mutter's `RecordVirtual` is SDR-only through the GNOME 51 dev branch) and
drops the half that no longer is.
enricobuehler
86f4f950ba