Disable Oculus plugin by default and add a setting to enable it

interface/resources/qml/hifi/dialogs/GeneralPreferencesDialog.qml

@@ -17,7 +17,7 @@ PreferencesDialog {
     id: root
     objectName: "GeneralPreferencesDialog"
     title: "General Settings"
-    showCategories: ["User Interface", "Mouse Sensitivity", "HMD", "Snapshots", "Privacy"]
+    showCategories: ["User Interface", "Mouse Sensitivity", "HMD", "Snapshots", "Privacy", "Plugins"]
     property var settings: Settings {
         category: root.objectName
         property alias x: root.x

interface/resources/qml/hifi/tablet/TabletGeneralPreferences.qml

@@ -38,6 +38,6 @@ StackView {
     TabletPreferencesDialog {
         id: root
         objectName: "TabletGeneralPreferences"
-        showCategories: ["User Interface", "Mouse Sensitivity", "HMD", "Snapshots", "Privacy"]
+        showCategories: ["User Interface", "Mouse Sensitivity", "HMD", "Snapshots", "Privacy", "Plugins"]
     }
 }

interface/src/ui/PreferencesDialog.cpp

@@ -15,6 +15,7 @@
 #include <OffscreenUi.h>
 #include <Preferences.h>
 #include <plugins/PluginUtils.h>
+#include <plugins/PluginManager.h>
 #include <display-plugins/CompositorHelper.h>
 #include <display-plugins/hmd/HmdDisplayPlugin.h>
 #include "scripting/RenderScriptingInterface.h"
@@ -637,4 +638,12 @@ void setupPreferences() {
             preferences->addPreference(preference);
         }
     }
+
+    static const QString PLUGIN_CATEGORY{ "Plugins" };
+    auto pluginManager = PluginManager::getInstance();
+    {
+        auto getter = [pluginManager]()->bool { return pluginManager->getEnableOculusPluginSetting(); };
+        auto setter = [pluginManager](bool value) { pluginManager->setEnableOculusPluginSetting(value); };
+        preferences->addPreference(new CheckPreference(PLUGIN_CATEGORY, "Enable Oculus Platform Plugin", getter, setter));
+    }
 }

libraries/plugins/src/plugins/PluginManager.cpp

@@ -211,18 +211,24 @@ const OculusPlatformPluginPointer PluginManager::getOculusPlatformPlugin() {
     static OculusPlatformPluginPointer oculusPlatformPlugin;
     static std::once_flag once;
     std::call_once(once, [&] {
-        // Now grab the dynamic plugins
+        // Now grab the dynamic plugins if the setting allows it
-        for (auto loader : getLoadedPlugins()) {
+        if (_enableOculusPluginSetting.get()) {
-            OculusPlatformProvider* oculusPlatformProvider = qobject_cast<OculusPlatformProvider*>(loader->instance());
+            for (auto loader : getLoadedPlugins()) {
-            if (oculusPlatformProvider) {
+                OculusPlatformProvider* oculusPlatformProvider = qobject_cast<OculusPlatformProvider*>(loader->instance());
-                oculusPlatformPlugin = oculusPlatformProvider->getOculusPlatformPlugin();
+                if (oculusPlatformProvider) {
-                break;
+                    oculusPlatformPlugin = oculusPlatformProvider->getOculusPlatformPlugin();
+                    break;
+                }
             }
         }
     });
     return oculusPlatformPlugin;
 }
 
+void PluginManager::setEnableOculusPluginSetting(bool value) {
+    _enableOculusPluginSetting.set(value);
+}
+
 DisplayPluginList PluginManager::getAllDisplayPlugins() {
     return _displayPlugins;
 }

libraries/plugins/src/plugins/PluginManager.h

@@ -54,6 +54,9 @@ public:
     void setPluginFilter(PluginFilter pluginFilter) { _pluginFilter = pluginFilter; }
     Q_INVOKABLE DisplayPluginList getAllDisplayPlugins();
 
+    bool getEnableOculusPluginSetting() { return _enableOculusPluginSetting.get(); }
+    void setEnableOculusPluginSetting(bool value);
+
 signals:
     void inputDeviceRunningChanged(const QString& pluginName, bool isRunning, const QStringList& runningDevices);
     
@@ -76,6 +79,8 @@ private:
     Setting::Handle<bool> _enableScriptingPlugins {
         "private/enableScriptingPlugins", (bool)qgetenv("enableScriptingPlugins").toInt()
     };
+
+    Setting::Handle<bool> _enableOculusPluginSetting { "enableOculusPluginSetting", false };
 };
 
 // TODO: we should define this value in CMake, and then use CMake

plugins/openvr/src/OpenVrHelpers.cpp

@@ -50,15 +50,18 @@ static const uint32_t RELEASE_OPENVR_HMD_DELAY_MS = 5000;
 
 bool isOculusPresent() {
     bool result = false;
-#ifdef Q_OS_WIN 
+#ifdef Q_OS_WIN
-    HANDLE oculusServiceEvent = ::OpenEventW(SYNCHRONIZE, FALSE, L"OculusHMDConnected");
+    // Only check for Oculus presence if Oculus plugin is enabled
-    // The existence of the service indicates a running Oculus runtime
+    if (PluginManager::getInstance()->getEnableOculusPluginSetting()) {
-    if (oculusServiceEvent) {
+        HANDLE oculusServiceEvent = ::OpenEventW(SYNCHRONIZE, FALSE, L"OculusHMDConnected");
-        // A signaled event indicates a connected HMD
+        // The existence of the service indicates a running Oculus runtime
-        if (WAIT_OBJECT_0 == ::WaitForSingleObject(oculusServiceEvent, 0)) {
+        if (oculusServiceEvent) {
-            result = true;
+            // A signaled event indicates a connected HMD
+            if (WAIT_OBJECT_0 == ::WaitForSingleObject(oculusServiceEvent, 0)) {
+                result = true;
+            }
+            ::CloseHandle(oculusServiceEvent);
         }
-        ::CloseHandle(oculusServiceEvent);
     }
 #endif
     return result;