With [vr] eye_tracked_foveation (on by default on the Steam Frame, off elsewhere) the runtime asks for XR_EXT_eye_gaze_interaction. When the system reports an eye tracker, OpenXRInput binds the gaze pose and locates it for each packet's display time, in the space the eye views are located in; vr/eye_gaze.h turns it into tangents of each eye's own view, which AuroraStereoFrame now carries (appended, after the existing prefix). Aurora centres the eye's fragment density map on the gaze snapped to a cell of two map texels (about 3 degrees). Each eye keeps up to 32 maps, one per cell looked at, so a glance back reuses its map; a new map is bound once its upload completes, and until then the eye keeps the map it had. Without a tracked gaze (a blink, no tracker, the setting off) foveation centres on the forward direction exactly as before: the forward maps are byte-identical. Also logs every extension the OpenXR runtime offers at startup, so the first Steam Frame session shows what SteamVR's Android runtime has. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019HBRGKTE1GnN2ah8gcZKr3
WiiCompiled VR for Meta Quest (Android)
Standalone Android/OpenXR build of the Mario Kart Wii recompilation for Quest 1,
Quest 2, Quest 3, Quest 3S and Quest Pro. The full design, build walkthrough and current
status live in docs/quest-port.md; this directory only
holds the Gradle project, its helper scripts, the game kit tooling
(QuestGameKit.psm1, Build-QuestGame.ps1), the on-headset build toolchain
(Prepare-QuestToolchain.ps1, toolchain/) and nod-jni.
powershell -ExecutionPolicy Bypass -File android/Prepare-QuestDependencies.ps1 # stages the SDL3 3.4.4 AAR once
powershell -ExecutionPolicy Bypass -File android/Build-Quest.ps1 -Install # the app, debug-signed, installs over adb
powershell -ExecutionPolicy Bypass -File android/Build-Quest.ps1 -Headset quest1 -Install # Quest 1 flavour
One app offers both games, with a toggle on Home: Mario Kart Wii and, when your
translation includes the mod, Retro Rewind. The translated game (the translator's
generated/ tree for your own PAL RMCP01 disc) is passed with
-Generated <dir>; it defaults to the installer workspace next to this checkout.
No game data is ever part of the APK, and neither is any translated game code:
the APK carries one game kit holding a recipe per game, and your libmain.so is
built from your own disc, either on the headset (Build on this Quest, about
half an hour) or on a PC and imported:
powershell -ExecutionPolicy Bypass -File android/Build-QuestGame.ps1 -Product base -Install
powershell -ExecutionPolicy Bypass -File android/Build-QuestGame.ps1 -Headset quest1 -Product base -Install
powershell -ExecutionPolicy Bypass -File android/Build-QuestGame.ps1 -Product retro_rewind -Mod <RetroRewind6> -Install
-Mod puts the Retro Rewind pack in the package; Import from computer takes
the same .wcgame from the Import folder. The headset can also fetch that pack
itself with Download Retro Rewind on Home, from Retro Rewind's own
distribution server, the way the PC launcher does.
Copy your disc image to the headset (for example adb push MarioKart.iso /sdcard/Download/) and press Select disc image in the launcher, which checks
and extracts it with nod, as the PC installer does. Or push an already extracted
disc to
/sdcard/Android/data/org.wiicompiled.quest/files/WiiCompiledOpenXRVR/DATA
Config.toml, saves and logs live in the same WiiCompiledOpenXRVR directory.
The app opens on a 2D launcher panel modelled on the PC launcher (WheelWizard VR):
Home picks the game with a toggle, starts it in the headset and says what is
still missing (the disc files, the game itself, or Retro Rewind's pack), and
Settings edits Config.toml (VR camera, render scale, virtual screen,
resolution, controllers, audio), with an Other tab for the files and the
games built from them, with a Reset installation action that removes the game files (and
on request the built games and the Retro Rewind pack) so they can be set up again, and an
About tab carrying the credits. The game itself is QuestActivity, in its own
:game process; adb shell am start -n org.wiicompiled.quest/.QuestActivity
still starts it directly.