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Rewrite the README for frame-beta-3 and the update modes #13

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Merged
mitch030504 merged 1 commit into from
Oct 5, 2026
Merged

Rewrite the README for frame-beta-3 and the update modes #13

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2 changes: 1 addition & 1 deletion OPENXR.md
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Expand Up @@ -1291,7 +1291,7 @@ custom DLL's ABI through three borrowed-image copy/readback cycles; run it with
| Windows D3D12 | Implemented: same-adapter, same-device asynchronous OpenXR submission. |
| Windows Vulkan | Implemented, opt-in (`video.graphics_api = "vulkan"`): the runtime creates Dawn's Vulkan instance and device through `XR_KHR_vulkan_enable2`, eyes are copied on the same queue, and Dawn's device guard is held around the four queue-touching OpenXR calls. Needs the custom Dawn from `Launcher/Build-DawnVulkan.ps1`. Raced on SteamVR/PSVR2 at the headset's full rate; other runtimes unexercised. See [Windows Vulkan](#windows-vulkan). |
| Android Vulkan (Meta Quest) | Implemented and running on a Quest 3: the OpenXR side owns its own Vulkan device (`XR_KHR_vulkan_enable2`, `XR_KHR_vulkan_enable` fallback) and shares eyes with Dawn through `AHardwareBuffer`s ordered by sync-fd fences. Controllers arrive through OpenXR actions as a virtual SDL gamepad. See `docs/quest-port.md`. |
| Android Vulkan (Steam Frame) | The same backend in the `steamFrame` flavour, for SteamVR's Android runtime under Lepton: Frame controller profile, 120 Hz request, eye-tracked foveation. Blocked on the headset: Lepton's Turnip exposes no AHardwareBuffer or fd external memory, so the eyes cannot cross devices. The native build below is the supported route. See the README, The Android flavour. |
| Android Vulkan (Steam Frame) | The same backend in the `steamFrame` flavour, for SteamVR's Android runtime under Lepton: Frame controller profile, 120 Hz request, eye-tracked foveation. Blocked on the headset: Lepton's Turnip exposes no AHardwareBuffer or fd external memory, so the eyes cannot cross devices. The native build below is the supported route. See the README, How it works. |
| Linux Vulkan (Steam Frame, SteamOS) | Implemented and played on a Steam Frame (beta): the Windows Vulkan design compiled for Linux, so the runtime creates Dawn's own instance and device and the eyes are copied on Dawn's queue with no sharing. Adds the Frame controller profile, 120 Hz and gaze-centred foveation. Needs a Dawn built with Aurora's patches (`Launcher/build-dawn-linux.sh`), then `Launcher/local-build.sh --openxr --dawn-package <dir> --headset steam_frame`. See the README, Quick start. |
| Other platforms | Not wired yet. |

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