The capture-latched client (console.rs latched_mouse) never advertises
CLIENT_CAP_CURSOR, so its session resolved cursor_blend=false and asked
Mutter to EMBED the pointer. On a Mutter virtual stream that is a
fiction: since Mutter 48 (7ff5334a, hw-cursor inhibition removed) the
software cursor overlay is suppressed stage-globally whenever any
physical head realizes a HW cursor — dmabuf-recorded frames blit the
view without a pointer, and cursor-only motion schedules no re-record
either (mutter#4939). Probed on-glass on Mutter 50.3: embedded +
relative motion = frozen frame counter; SPA_META_Cursor positions kept
flowing in the same setup.
So the no-channel session now takes the path that was verified end to
end: cursor-as-metadata + the host composites, permanently — the same
arm a channel session lands in after its capture-model flip. Embedded
remains only the can't-blend fallback (libav VAAPI/NVENC, software).
- session_plan::cursor_blend_for grows the no-channel arm (codec +
depth in, the same CUDA-payload prediction handshake makes);
gamescope excluded so patch-2+ keeps its native-NV12 zero-copy shape
- the encode loop's composite refresh + one-shot breadcrumbs now cover
the no-channel session; the park schedule keeps retrying while its
composite is starved (relative-only clients cannot park themselves)
- the compositor retarget re-applies set_hw_cursor — the rebuilt
display used to come up EMBEDDED even for channel sessions
- the GameStream virtual source takes the same rule (it never has a
channel); its stream_body blend flag mirrors the request
- punktfunk-probe grows --cursor-nochannel (the latched-capture client,
headless); cursor-probe grows --dump (PPM frames + a content-change
counter, the pixel evidence the embedded A/B lacked)
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
punktfunk-probe grows --cursor-capture: advertise CLIENT_CAP_CURSOR,
flip the channel to the capture model (CursorRenderMode client_draws=
false), and wiggle RELATIVE pointer motion for the whole dump — decode
the .h265 and the host-composited pointer must be in the pixels. Plus
--codec pyrowave (advertised only on request so the dump format of
existing recipes never changes).
tools/cursor-probe stands up the capture side alone: virtual output with
the out-of-band cursor, production PipeWire capturer, production
injector, absolute then relative motion — and reports whether
SPA_META_Cursor ever yields an overlay. It is how Mutter's
pointer-in-stream metadata gate was isolated on-glass.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehlerandClaude Fable 5