Matthias JanetschekandClaude Opus 5.5
b22c35ae29
- manifest.vrmanifest: binary_path_linux and binary_path_linux_arm. The Steam Frame's SteamVR reads only binary_path_linux_arm. - handleManifests(): connect as Utility app first (works without a running SteamVR, e.g. from the Windows installer); if SteamVR refuses Utility apps, as on the Steam Frame, connect as Background app. Fail right away on other errors instead of going through initializeOpenVR()'s retry loop. - main(): check --graphics-api before connecting to OpenVR, so a wrong value fails right away. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
125 lines
6.2 KiB
Markdown
125 lines
6.2 KiB
Markdown
# Steam Frame port: progress
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## Iteration 1
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### Step 1: build fixes, bytecode-only QML (2026-10-07)
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**Changes:**
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- **`CMakeLists.txt`:**
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- `Core5Compat` removed (unused, not on the Frame).
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- `GuiPrivate` requested explicitly. This is temporary, until step 3 replaces QRhi.
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- `QT_QMLCACHEGEN_ARGUMENTS --only-bytecode`.
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- OpenVR library directory per architecture (`linux64` / `linuxarm64` / `win64`), for
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linking and for the copy next to the binary.
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- `RPATH $ORIGIN`.
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- `libXtst` linked.
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- **`overlaycontroller.cpp`:** `d3d11.h` and `case QRhi::D3D11` only under `_WIN32`.
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- **Logging:** 8 active easylogging `LOG(INFO)` calls became `qInfo()`
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(`overlaycontroller.cpp` 6, `ChaperoneTabController.cpp` 1,
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`MoveCenterTabController.cpp` 1). Commented-out `LOG` lines are left unchanged.
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- Only changed lines are formatted (`git clang-format`).
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**Results (x86_64, Arch, Qt 6.11.1, GCC):**
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- The build succeeds, with 1463 compiler warnings, as in `qt6`.
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- `objdump -T`: 7 `Qt_6_PRIVATE_API` symbols, all `QRhi…` (step 3). The
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`QQmlPrivate::AOTCompiledContext` symbols are gone (bytecode-only QML).
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- `libopenvr_api.so` is resolved from the binary's directory (`ldd`).
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- Not started: without a running SteamVR the start hangs in OpenVR init (expected; tested
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on the Frame in step 5).
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### Step 2: platform option, R7, tick (2026-10-07)
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**Changes:**
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- **Platform option:**
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- CMake option `OVRAS_STEAM_FRAME` (default OFF) sets the compile definition
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`OVRAS_STEAM_FRAME=1`.
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- New `src/utils/platform_capabilities.h` evaluates it as the only place. It holds
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`k_chaperoneCommitSupported`, `k_defaultVsyncDisabled` and `k_defaultCustomTickRateMs`.
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- **Tick (R6):**
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- In "vsync disabled" mode, `m_pumpEventsTimer` runs directly at `customTickRateMs`
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(`applyTickInterval()`, `Qt::PreciseTimer`); the 1 ms counting is gone.
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- Changing the setting restarts the timer.
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- Setting defaults in `settings_controller.h` come from the constants: Frame `true`/11 ms,
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otherwise unchanged `false`/20 ms.
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- **R7:** with `!k_chaperoneCommitSupported`:
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- `updateChaperoneResetData()` and `applyChaperoneResetData()` skip
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`CommitWorkingCopy`/`RevertWorkingCopy`. Each logs once per function.
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- The init autosave profile is skipped.
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**Results:**
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- Both variants (default and `-DOVRAS_STEAM_FRAME=ON`) build on x86_64. The definition is
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only set in the Frame variant (`compile_commands.json`).
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- Not tested at runtime yet (Frame, step 5).
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**Notes:**
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- Another commit at start-up remains, but only on opt-in. `SetWidget()` applies a chaperone
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profile and commits when "auto-apply chaperone" (`autoApplyChaperoneToggle`, default
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`false`) is on. That's a chaperone-profile feature, so it belongs to R5 (iteration 2).
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- clang-format reflows comment blocks next to new comments. Separate new comments from
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existing commented-out code with a blank line, otherwise the diff grows.
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### Step 3: rendering through public API, `--graphics-api`, mouse y, shutdown order (2026-10-07)
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**Changes:**
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- **`src/render/`** (new): `RenderBackend`, `OpenGLRenderBackend`, `VulkanRenderBackend` from
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the template (`4a5b090`).
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- Changes to the template code: `VRDASH_*` → `OVRAS_*` names, origin note in the file
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header, references to `OverlayController`.
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- Formatted completely in OVRAS style.
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- One comment in `VulkanRenderBackend.h` was wrapped by hand, because the automatic
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wrapping had broken its column layout.
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- **`OverlayController`:**
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- QRhi block replaced by `configureWindow` → `renderControl.initialize` →
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`attachWindow` → `createRenderTarget`.
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- `renderOverlay()` wraps the frame in `beginFrame`/`finishFrame`. It submits
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`vrTextureBounds` + `vrTexture` while the context is current.
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- `SetOverlayFromQRhiTexture`, the QRhi members and `QVulkanInstance` are removed.
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- Render delay 5 → 16 ms (about 60 fps).
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- **Shutdown:** `Shutdown()` runs only once. It calls `VR_Shutdown()`, then frees the
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backend's render target (`releaseRenderTarget`, `detachWindow`).
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- **Mouse y:** always flipped; the Linux un-flip and its TODO are removed.
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- **`openvr_init::renderInterop()`:** Vulkan extensions and HMD GPU from SteamVR.
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- **`main.cpp`:** parses `--graphics-api`, then `createRenderBackend` → `initialize` →
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`QQuickWindow::setGraphicsApi` → `OverlayController`.
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- **`setup.*`:** `--graphics-api opengl|vulkan` (default `opengl`). Unknown or not built in
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→ error, exit code `GENERAL_FAILURE`.
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- **CMake:**
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- `GuiPrivate` is gone.
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- The Vulkan backend is built when `QT_FEATURE_vulkan` is set (`OVRAS_HAS_VULKAN`).
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**Results (x86_64, Qt 6.11.1):**
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- The build succeeds. The Vulkan backend is built in.
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- `objdump -T`: only `QVulkanDeviceFunctions::*` / `QVulkanFunctions::*` remain as
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`Qt_6_PRIVATE_API`. Acceptance criterion R1 (symbols) is met.
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- Warnings 1463 → 1630. The new code itself has none; the additional ones come from
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`openvr.h` in the three new translation units.
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- **Not tested yet:**
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- running both backends, Vulkan validation, the snapshot test (step 5, with the
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containers)
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- mouse direction (Frame)
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**Risk:**
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- `MyTextField` opens the SteamVR keyboard on `activeFocus`. The template had to send the
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offscreen window an explicit `FocusIn`, otherwise `activeFocusItem` stayed null. The `qt6`
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branch doesn't send it. If text fields don't respond on the Frame, that is the cause (R4).
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### Step 4: manifest and installation (2026-10-07)
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**Changes:**
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- **`manifest.vrmanifest`:** `binary_path_linux` and `binary_path_linux_arm` →
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`AdvancedSettings_app`.
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- **`manifest::handleManifests`:**
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- `VR_Init(Utility)`; on `VRInitError_Init_NotAvailableToUtilityApps`,
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`VR_Init(Background)`.
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- Other errors: message and exit code `OPENVR_INIT_ERROR`, instead of
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`initializeOpenVR`'s retry loop.
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- **`main.cpp`:** `--graphics-api` is checked before connecting to OpenVR. A wrong value
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used to fail only after `initializeOpenVR`'s retry loop.
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**Results (x86_64, without SteamVR):**
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- `--force-install-manifest` exits right away with `OPENVR_INIT_ERROR` (−2).
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- `--graphics-api foo` exits right away with `GENERAL_FAILURE` (−1).
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- The build tree contains the binary, `libopenvr_api.so`, both manifests,
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`default_action_manifests/` and `res/`.
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- Not tested yet: `Background` on the Frame (step 5).
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