Initial code for supporting an alternative QtQuick based UI for OpenVR

src/vr/openvr_init.cpp

@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright (c) 2020-2021, The Monero Project.
+// Copyright (c) OpenVR Advanced Settings
+
+#include <string>
+#include <openvr.h>
+#include <QDebug>
+#include <QMessageBox>
+#include "openvr_init.h"
+
+namespace openvr_init
+{
+bool initializeProperly(const OpenVrInitializationType initType) {
+    auto initializationType = vr::EVRApplicationType::VRApplication_Other;
+    if (initType == OpenVrInitializationType::Overlay) {
+        initializationType = vr::EVRApplicationType::VRApplication_Overlay;
+    } else if (initType == OpenVrInitializationType::Utility) {
+        initializationType = vr::EVRApplicationType::VRApplication_Utility;
+    }
+
+    auto initError = vr::VRInitError_None;
+    vr::VR_Init(&initError, initializationType);
+    if (initError != vr::VRInitError_None) {
+        if (initError == vr::VRInitError_Init_HmdNotFound || initError == vr::VRInitError_Init_HmdNotFoundPresenceFailed) {
+            QMessageBox::critical(nullptr, "Wowlet VR", "Could not find HMD!");
+        }
+        qCritical() << "Failed to initialize OpenVR: " << std::string(vr::VR_GetVRInitErrorAsEnglishDescription(initError)).c_str();
+        return false;
+    }
+
+    qInfo() << "OpenVR initialized successfully.";
+    return true;
+}
+
+bool initializeOpenVR(const OpenVrInitializationType initType)
+{
+    bool res = initializeProperly(initType);
+    if(!res)
+        return false;
+
+    // Check whether OpenVR is too outdated
+    if (!vr::VR_IsInterfaceVersionValid(vr::IVRSystem_Version)) {
+        return reportVersionError(vr::IVRSystem_Version);
+    } else if (!vr::VR_IsInterfaceVersionValid(vr::IVRSettings_Version)) {
+        return reportVersionError(vr::IVRSettings_Version);
+    } else if (!vr::VR_IsInterfaceVersionValid(vr::IVROverlay_Version)) {
+        return reportVersionError(vr::IVROverlay_Version);
+    } else if (!vr::VR_IsInterfaceVersionValid(vr::IVRApplications_Version)) {
+        return reportVersionError(vr::IVRApplications_Version);
+    } else if (!vr::VR_IsInterfaceVersionValid(vr::IVRChaperone_Version)) {
+        return reportVersionError(vr::IVRChaperone_Version);
+    } else if (!vr::VR_IsInterfaceVersionValid(vr::IVRChaperoneSetup_Version)) {
+        return reportVersionError(vr::IVRChaperoneSetup_Version);
+    } else if (!vr::VR_IsInterfaceVersionValid(vr::IVRCompositor_Version)) {
+        return reportVersionError(vr::IVRCompositor_Version);
+    } else if (!vr::VR_IsInterfaceVersionValid(vr::IVRNotifications_Version)) {
+        return reportVersionError(vr::IVRNotifications_Version);
+    } else if (!vr::VR_IsInterfaceVersionValid(vr::IVRInput_Version)) {
+        return reportVersionError(vr::IVRInput_Version);
+    }
+    
+    return true;
+}
+
+bool reportVersionError(const char* const interfaceAndVersion) {
+    // The function call and error message was the same for all version checks.
+    // Specific error messages are unlikely to be necessary since both the type
+    // and version are in the string and will be output.
+    auto msg = "OpenVR version is too outdated. Please update OpenVR: " + QString(interfaceAndVersion);
+    QMessageBox::critical(nullptr, "Wowlet VR", msg);
+    return false;
+}
+
+} // namespace openvr_init