use true default settings

apps/openmw/mwgui/settingswindow.cpp

@@ -291,15 +291,12 @@ namespace MWGui
 
         if (lightingMethod == SceneUtil::LightingMethod::FFP || !Settings::Manager::getBool("force shaders", "Shaders"))
         {
-            std::string warningText =
-                "Unavailable with current settings."
-                "\n\nEnable \"force shaders\" and use either the \"shaders\" or \"shaders compatibility\" lighting method.";
             MyGUI::Widget* parent = mLightSettingOverlay->getParent();
             mLightSettingOverlay->setEnabled(false);
             mLightSettingOverlay->setAlpha(0.8);
             parent->setUserString("ToolTipType", "Layout");
             parent->setUserString("ToolTipLayout", "TextToolTip");
-            parent->setUserString("Caption_Text", warningText);
+            parent->setUserString("Caption_Text", "Unavailable with current settings.");
             parent->setEnabled(true);
         }
         else
@@ -408,18 +405,15 @@ namespace MWGui
     void SettingsWindow::onLightsResetButtonClicked(MyGUI::Widget* _sender)
     {
         std::vector<std::string> buttons = {"#{sYes}", "#{sNo}"};
-        std::string message = "This will reset all lighting settings to default, some changes will require a restart. Would you like to continue?";
+        std::string message = "Resets to default values, would you like to continue?";
         MWBase::Environment::get().getWindowManager()->interactiveMessageBox(message, buttons, true);
         int selectedButton = MWBase::Environment::get().getWindowManager()->readPressedButton();
         if (selectedButton == 1 || selectedButton == -1)
             return;
 
-        Settings::Manager::setString("lighting method", "Shaders", "shaders compatibility");
-        Settings::Manager::setFloat("light bounds multiplier", "Shaders", 1.75);
-        Settings::Manager::setInt("maximum light distance", "Shaders", 8192);
-        Settings::Manager::setFloat("light fade start", "Shaders", 0.85);
-        Settings::Manager::setFloat("minimum interior brightness", "Shaders", 0.1);
-        Settings::Manager::setInt("max lights", "Shaders", 8);
+        const std::vector<std::string> settings = {"light bounds multiplier", "maximum light distance", "light fade start", "minimum interior brightness", "max lights"};
+        for (const auto& setting : settings)
+            Settings::Manager::setString(setting, "Shaders", Settings::Manager::mDefaultSettings[{"Shaders", setting}]);
 
         apply();
         configureWidgets(mMainWidget, false);