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RedBear-OS/local/recipes/system/redbear-greeter/source/redbear-greeter-compositor
T
vasilito 7d96c20b28 feat: add KWin compositor integration with QML-free build
Add P0-disable-qml-quick.patch for building KWin without QML/Quick
dependencies. Update greeter scripts to prefer kwin_wayland. Enable
kwin in redbear-full config.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-05-11 10:09:58 +01:00

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#!/usr/bin/env bash
set -euo pipefail
export DISPLAY=""
export WAYLAND_DISPLAY="${WAYLAND_DISPLAY:-wayland-0}"
export XDG_SESSION_TYPE=wayland
export LIBSEAT_BACKEND=seatd
export SEATD_SOCK=/run/seatd.sock
export QT_PLUGIN_PATH="${QT_PLUGIN_PATH:-/usr/plugins}"
export QT_QPA_PLATFORM_PLUGIN_PATH="${QT_QPA_PLATFORM_PLUGIN_PATH:-/usr/plugins/platforms}"
export QML2_IMPORT_PATH="${QML2_IMPORT_PATH:-/usr/qml}"
export QT_WAYLAND_SHELL_INTEGRATION="${QT_WAYLAND_SHELL_INTEGRATION:-xdg-shell}"
export XCURSOR_THEME="${XCURSOR_THEME:-Pop}"
export XKB_CONFIG_ROOT="${XKB_CONFIG_ROOT:-/usr/share/X11/xkb}"
if [ -z "${XDG_RUNTIME_DIR:-}" ]; then
export XDG_RUNTIME_DIR="/tmp/run/redbear-greeter"
fi
mkdir -p "$XDG_RUNTIME_DIR"
parse_drm_devices() {
local devices="${1:-}"
local part=""
IFS=':' read -r -a parts <<< "$devices"
for part in "${parts[@]}"; do
if [ -n "$part" ]; then
printf '%s\n' "$part"
fi
done
}
drm_devices_ready() {
local devices="${1:-}"
local device=""
for device in $(parse_drm_devices "$devices"); do
if [ ! -e "$device" ]; then
return 1
fi
done
return 0
}
wait_for_drm_devices() {
local devices="${1:-}"
local wait_seconds="${REDBEAR_DRM_WAIT_SECONDS:-2}"
local attempts=0
if [ -z "$devices" ]; then
return 1
fi
if [ "$wait_seconds" -le 0 ] 2>/dev/null; then
drm_devices_ready "$devices"
return $?
fi
attempts=$((wait_seconds * 2))
if ! drm_devices_ready "$devices"; then
echo "redbear-greeter-compositor: waiting up to ${wait_seconds}s for DRM device(s): ${devices}" >&2
fi
while [ "$attempts" -gt 0 ]; do
if drm_devices_ready "$devices"; then
return 0
fi
sleep 0.5
attempts=$((attempts - 1))
done
drm_devices_ready "$devices"
}
if [ -z "${DBUS_SESSION_BUS_ADDRESS:-}" ] && command -v dbus-launch >/dev/null 2>&1; then
eval "$(dbus-launch --sh-syntax)"
fi
# Prefer kwin_wayland (real KWin compositor). Fall back to redbear-compositor only if
# KWin is not installed (e.g. text-only target accidentally includes greeter).
COMPOSITOR=""
if command -v kwin_wayland >/dev/null 2>&1; then
COMPOSITOR="kwin_wayland"
elif command -v /usr/bin/kwin_wayland >/dev/null 2>&1; then
COMPOSITOR="/usr/bin/kwin_wayland"
elif command -v redbear-compositor >/dev/null 2>&1; then
COMPOSITOR="redbear-compositor"
echo "redbear-greeter-compositor: kwin_wayland not found, falling back to redbear-compositor" >&2
else
echo "redbear-greeter-compositor: no compositor found (need kwin_wayland or redbear-compositor)" >&2
exit 1
fi
# pcid-spawner is intentionally async in Red Bear OS, so service ordering only guarantees that
# spawning has started. Wait for the DRM scheme root first, then the selected card node.
if [ -n "${KWIN_DRM_DEVICES:-}" ]; then
desired_drm_devices="/scheme/drm:${KWIN_DRM_DEVICES}"
else
desired_drm_devices="/scheme/drm:/scheme/drm/card0"
fi
if wait_for_drm_devices "$desired_drm_devices"; then
export KWIN_DRM_DEVICES="${KWIN_DRM_DEVICES:-/scheme/drm/card0}"
echo "redbear-greeter-compositor: using DRM compositor backend (KWIN_DRM_DEVICES=${KWIN_DRM_DEVICES})" >&2
if [ "$COMPOSITOR" = "kwin_wayland" ] || [ "$COMPOSITOR" = "/usr/bin/kwin_wayland" ]; then
exec "$COMPOSITOR" --drm
else
exec "$COMPOSITOR" --drm
fi
else
unset KWIN_DRM_DEVICES
echo "redbear-greeter-compositor: DRM device not ready after wait, using virtual compositor backend" >&2
if [ "$COMPOSITOR" = "kwin_wayland" ] || [ "$COMPOSITOR" = "/usr/bin/kwin_wayland" ]; then
exec "$COMPOSITOR" --virtual
else
exec "$COMPOSITOR" --virtual
fi
fi