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.
Tried on device: with a session bus the client still sat on "Switching to Desktop..." and
never reached its legacy path (no "No SteamOSManager support" line, steamos-session-select not
called), so the bus was not what it waited on. Sign-in was unaffected.
This reverts commit 40fc5463f3.
Big Picture's Switch to Desktop asks SteamOS Manager over the session bus before falling back to
steamos-session-select (steamui.so). The Steam session had no session bus, the ask never
finished, and the client sat on "Switching to Desktop..."; the new stub was never called. A
bus with nothing on it answers at once, and the client takes its legacy path.
- The front end's "Steam Desktop UI" started a Steam session without -gamepadui, and the client
put itself into Big Picture under gamescope anyway. It now opens the desktop with Steam's
desktop client started in it (BL_DESKTOP_STEAM, the desktop's autostart, the same
bannerlator-steam-launch the menu's Steam entry uses).
- Big Picture's power menu "Switch to Desktop" runs steamos-session-select, which did not exist,
so it sat on "Switching to Desktop..." for ever. The new stub leaves the app a request
(session=desktop in the steam-launch file); the app ends the Steam session and starts the
desktop with Steam's desktop client open.
AutoPlace on its own left the resized window in the top-left corner; with policy="center" it
opens in the middle of the desktop. Tried in a running desktop (labwc --reconfigure).
melonDS remembers a 1x window for the front end's full-screen toggle, too small on a desktop.
A labwc window rule (only the desktop reads rc.xml) resizes it to 800x600 on open and places
it again by the desktop's centre policy.
The desktop set QT_QPA_PLATFORM=wayland for every program. The melonDS AppImage bundles only
Qt's xcb plugin, so from the desktop it exited at once: "Could not find the Qt platform plugin
wayland ... Available platform plugins are: xcb" (exit 127). "wayland;xcb" keeps LXQt on
Wayland and lets such an AppImage use Xwayland. Proven in a running desktop: labwc mapped
"melonDS 1.1".
The guide button's toggle returns to melonDS's saved window size. A 512x288 window (1x wide,
16:9) is stretched by gamescope to fill the panel, menu bar and cursor with it; at 2x and up
the menus stay at their real size, tiny on a handheld. Written once, with the layout.
Hybrid repeats the big screen, small, above the bottom one. Horizontal with the top screen
emphasised fills the panel's height with the top screen and centres the bottom screen in the
rest. Installs set up with Hybrid (or still on melonDS's defaults) move once.
- bannerlator-pad-defaults: new installs start on the Hybrid layout with sharp pixels; an
existing install is moved once, only where still on melonDS's defaults (marker keeps later
choices). Guide = HK_FullscreenToggle. The user's DS/DSi BIOS, firmware and NAND are found in
ROMs/nds/{bios,firmware} and filled in only where melonDS has no path.
- Front end starts melonDS with -f, at the panel's own resolution unless the user chose one.
- From the rail: -batch -bigpicture -fullscreen (the same flags as PCSX2's,
src/duckstation-qt/qthost.cpp) - straight into the game, gone when it is quit.
- bannerlator-pad-defaults: a new player starts on DuckStation's first-time setup
with the BIOS folder in the ROMs folder (psx/bios, created, or an existing one),
psx as the game list, Vulkan, the controller on Player 1 and the guide button
on the pause menu (not the analog toggle). An existing install gets the guide
and game-list changes, and once, its own empty BIOS folder moved to the ROMs
folder and Automatic made Vulkan; later choices are kept. Users bring their own
BIOS and games.
Quake III Arena, Team Arena, Return to Castle Wolfenstein and Jedi Academy set their own
resolution and switch the display to it. Under gamescope with the ARM64 Proton that switch is
refused ("calling CDS: failed, bad mode") and the game never gets OpenGL - device-seen on a
Retroid Pocket 5 on Proton Experimental build 25406135 - and a window left at the game's own size
draws small in a corner. Both wrappers (Valve's depot and an adopted GE or CachyOS) now add
+set r_fullscreen 0 +set r_mode -1 +set r_customwidth/height at BL_WIDTH x BL_HEIGHT for those
app ids, unless the user's launch options already set the video mode; the choice is logged.
The same choice as the Steam cog's, in the drawer's Now group, changed while the client runs:
the app writes it to ~/.droiddeck-fill (and again at every session start, so a file an earlier
session left never disagrees), and a watcher in the Steam session hands each change to gamescope
as GAMESCOPE_FORCE_WINDOWS_FULLSCREEN on the root window, which gamescope reads whenever it
changes. The session log says so when it does.
- From the rail ARMSX2 starts the game in its full-screen, controller-driven UI
and exits with it (-batch -bigpicture -fullscreen).
- bannerlator-pad-defaults: a PCSX2 player's settings and memory cards are
copied into ARMSX2 once; a new player starts on ARMSX2's first-time setup with
the BIOS folder in the ROMs folder (ps2/bios, created, or ps2/firmware), the
ps2 folder as the game list and the controller on Player 1; the guide button
opens the pause menu (how a rail game is left) instead of toggling analog.
Users bring their own BIOS and games.
- The catalog can name a file per memory page size ("pages"); the device's own
size picks it (ARMSX2 has 4K and 16K builds).
- On-screen controls: Auto keeps them off the desktop (the screen is a touchpad
there) and shows them for rail games and Steam when no controller is
connected; the drawer offers the setting in every session.
Upstream PCSX2 interprets the PS2's CPUs on ARM64 (pcsx2/arm64/RecStubs.cpp):
NFS Underground 2 ran at 17 fps with one core at 100%. ARMSX2 is the PCSX2 fork
with ARM64 recompilers. It is listed beside PCSX2 for the ps2 folder, installs
from the desktop catalog (package armsx2), and bannerlator-pad-defaults gives it
the PCSX2 profile under its own folder (ARMSX2/inis/PCSX2.ini).
vulkan is the default desktop renderer (settings list it first). When labwc
cannot start on a GPU renderer the desktop falls back to pixman as before, and
now records the renderer with the patched wlroots and Linux driver it failed
on, so later desktops go straight to pixman instead of waiting 20 s each time;
an app update, a different driver, or choosing a renderer again in the settings
(which deletes the record) retries.
- A program from the rail draws with the desktop's Linux driver instead of the
Steam session's. The driver's shader cache is keyed on its build, so with two
drivers an emulator compiled everything once per way of starting it; seen on
device: desktop on the imported Turnip 26.3.0, rail on the runtime's own.
- RPCS3's default shader mode builds 6650 interpreter pipelines every boot.
bannerlator-pad-defaults starts a new install on Async Recompiler
(multi-threaded) and moves an existing one still on the default once; a
marker leaves any later choice in RPCS3's settings alone. Enum strings from
rpcs3/Emu/system_config_types.cpp.
bannerlator-pad-defaults now covers DuckStation, PCSX2, Dolphin (GameCube and
Wii), Cemu, melonDS, PPSSPP and RetroArch as well as RPCS3, from each project's
source: files an emulator would otherwise fill with keyboard-only defaults are
seeded when missing (Dolphin, Cemu, PPSSPP, RPCS3), or given SDL bindings in the
config the emulator wrote itself when nothing binds a controller yet
(DuckStation, PCSX2 with its SettingsVersion, melonDS). RetroArch gets an Xbox
360 profile for its sdl2 driver and is moved off udev, which finds no pads in the
runtime. The desktop re-runs it every 30 s, so an emulator's first config is
covered for its next start.
The PC keyboard takes 47% of the screen height, header included.
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