The Steam menu is an overlay that takes input without changing gamescope's focus
window. A fullscreen wine game minimizes itself when it loses input, and gamescope
only takes a window out of iconic when the focus window changes, so after Resume
the game stayed minimized: a black screen with its caption in the top-left corner
(Titanfall 2 on GE-Proton 11, proven on device).
gamescope patch 0112 remembers the iconify request and puts the window back to
NormalState before input returns to it, then hands focus over again so wine
restores and activates it. The session script also asks gamescope to restore the
game once input comes back from the client (GAMESCOPE_RESTORE_FOCUS_WINDOW);
BL_RESTORE_ON_RESUME=0 turns that off.
The gamepad-cursor port queried the X pointer on every vblank, a
blocking round trip to Xwayland on the paint thread. With no cursor
image the position comes from wlserver as upstream; while the cursor is
hidden for inactivity X is asked every 50 ms. The realtime-queue comment
now says it is a no-op on KGSL Turnip.
In touchpad mode the cursor moved but Big Picture highlighted nothing and a tap-to-click
selected nothing: the nested pointer's motion reaches wlserver as touch 0, and in Passthrough
(the touch mode Big Picture sets) a motion for a touch that is not down moves nothing, so the X
pointer stayed where it was. 0111 passes bAlwaysWarpCursor, as the other touch modes already warp.
3.16.29's Wayland backend bound only wl_pointer and wl_keyboard; touch from DroidDeck's
compositor was never read, so Steam could not be touched. 0110 binds wl_touch in the input
thread and feeds each finger to wlserver_touchdown/touchmotion/touchup, the Steam Deck
touchscreen's path, so Big Picture's Passthrough touch mode gets real touches.
Four of Armada's patches apply to 3.16.29 as they are (appid-focus fallback, ARM64 night mode,
ARM64 colour-temperature slider, P3 red); two more are ported by hand: realtime-priority Vulkan
queues on GAMESCOPE_FORCE_VULKAN_REALTIME=1 without CAP_SYS_NICE, and the gamepad cursor sprite
following the X pointer. build-gamescope.yml builds Arch Linux ARM's package with them in an
Arch container, checks every NEEDED library against the runtime's own list, and publishes the
binary as a release asset for the apk to stage over /usr/local/bin/gamescope.
Kurt Himebauch