enricobuehler 4b2d2d1e14 fix(gamescope/cursor): follow gamescope's own cursor verdict — the corner-parked pointer ...

gamescope hides its pointer by WARPING the X pointer to the root's bottom-right corner pixel;
it does not swap in a transparent X cursor, so XFixesGetCursorImage keeps handing back the last
opaque arrow. The XFixes source picked its display by "whichever pointer moved", and a parked
pointer never moves again — so it froze on the parked Xwayland and composited that arrow at
(w-1, h-1): a sliver of cursor welded to the corner of the stream for the rest of the session
while the real pointer went undrawn. Reported on-glass in every game (a game grabs the pointer,
so the hide is permanent): "part of cursor shows up on bottom right ... isn't where it really is".

Follow GAMESCOPE_CURSOR_VISIBLE_FEEDBACK instead — gamescope publishes it on every nested
Xwayland root: 1 on the server whose pointer it is drawing, 0 on the others and 0 on all of them
once the pointer is hidden. It answers both questions correctly for a STATIC pointer, which
motion cannot: which Xwayland owns it, and whether to draw it at all. Read at connect, re-read
on its root PropertyNotify (event drain now discriminates CursorNotify vs PropertyNotify) with a
250 ms resync as the self-heal. A pointer gamescope draws nowhere is published visible:false,
not dropped — the encode loop overwrites the frame's overlay from this slot and strips invisible
ones, so a None would leave the last visible overlay standing on repeat frames. Honouring the
atom also gives the stream gamescope's own idle auto-hide, which this source never had.

The pointer-motion heuristic stays as the fallback for a gamescope that publishes no verdict
(logged at session start via cursor_feedback=false), so nothing regresses to a cursorless stream.

Measured on a live 1920x1080 Steam Gaming Mode session (RTX 5070 Ti, gamescope c31743d+,
--xwayland-count 2 --hide-cursor-delay 3000): idle 3 s => pointer (1919,1079) + feedback 0;
real evdev motion => pointer live + feedback 1. End-to-end against that session the source now
publishes visible=false while parked and tracks the live pointer within one 250 ms sample of
motion. cargo clippy -p pf-capture --lib -D warnings and the 5 new pick_active tests are green
at cargo 1.96.1 (CI parity); cargo fmt --all --check clean.

2026-07-24 00:31:55 +02:00

..

src

fix(gamescope/cursor): follow gamescope's own cursor verdict — the corner-parked pointer

2026-07-24 00:31:55 +02:00

Cargo.toml

feat(capture): gamescope cursor via XFixes shape + QueryPointer position (Phase C)

2026-07-22 23:47:53 +02:00