Frame: remind users to release laser pointer focus

In flat Vulkan mode, Steam Frame controller buttons can appear not to
reach the game while the system's laser-pointer mode still owns focus.
This is an easy mistake to make when starting a game from the headset.

After a successful boot, show an informational dialog for explicit Flat
Display (Vulkan) mode and for legacy configurations with OpenXR disabled.
The check happens after boot metadata and per-game VR settings are loaded,
so immersive VR and Stereo 3D Screen launches are not interrupted.

Add the requested reminder text and a Never See This Dialog Again
checkbox. Persist the opt-out in Main.Interface, and leave it unchecked by
default so the reminder appears for new users.

Source/Core/Core/Config/MainSettings.cpp

@@ -426,6 +426,8 @@ const Info<bool> MAIN_ABORT_ON_PANIC_ALERT{{System::Main, "Interface", "AbortOnP
 const Info<bool> MAIN_OSD_MESSAGES{{System::Main, "Interface", "OnScreenDisplayMessages"}, true};
 const Info<int> MAIN_OSD_FONT_SIZE{{System::Main, "Settings", "OSDFontSize"}, 13};
 const Info<bool> MAIN_SKIP_NKIT_WARNING{{System::Main, "Interface", "SkipNKitWarning"}, false};
+const Info<bool> MAIN_SKIP_FLAT_MODE_INPUT_WARNING{
+    {System::Main, "Interface", "SkipFlatModeInputWarning"}, false};
 const Info<bool> MAIN_CONFIRM_ON_STOP{{System::Main, "Interface", "ConfirmStop"}, true};
 const Info<ShowCursor> MAIN_SHOW_CURSOR{{System::Main, "Interface", "CursorVisibility"},
                                         ShowCursor::OnMovement};

Source/Core/Core/Config/MainSettings.h

@@ -248,6 +248,7 @@ extern const Info<bool> MAIN_ABORT_ON_PANIC_ALERT;
 extern const Info<bool> MAIN_OSD_MESSAGES;
 extern const Info<int> MAIN_OSD_FONT_SIZE;
 extern const Info<bool> MAIN_SKIP_NKIT_WARNING;
+extern const Info<bool> MAIN_SKIP_FLAT_MODE_INPUT_WARNING;
 extern const Info<bool> MAIN_CONFIRM_ON_STOP;
 
 enum class ShowCursor

Source/Core/DolphinQt/CMakeLists.txt

@@ -339,6 +339,8 @@ add_executable(dolphin-emu
   NetPlay/PadMappingDialog.h
   NANDRepairDialog.cpp
   NANDRepairDialog.h
+  FrameFlatModeInputWarningDialog.cpp
+  FrameFlatModeInputWarningDialog.h
   NKitWarningDialog.cpp
   NKitWarningDialog.h
   QtUtils/AnalyticsPrompt.cpp

Source/Core/DolphinQt/FrameFlatModeInputWarningDialog.cpp

@@ -0,0 +1,44 @@
+// Copyright 2026 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "DolphinQt/FrameFlatModeInputWarningDialog.h"
+
+#include <QCheckBox>
+#include <QDialogButtonBox>
+#include <QLabel>
+#include <QVBoxLayout>
+
+#include "Common/Config/Config.h"
+#include "Core/Config/MainSettings.h"
+#include "DolphinQt/Resources.h"
+
+void FrameFlatModeInputWarningDialog::ShowUnlessDisabled(QWidget* parent)
+{
+  if (Config::Get(Config::MAIN_SKIP_FLAT_MODE_INPUT_WARNING))
+    return;
+
+  FrameFlatModeInputWarningDialog dialog(parent);
+  if (dialog.exec() == QDialog::Accepted && dialog.m_never_show_again->isChecked())
+    Config::SetBase(Config::MAIN_SKIP_FLAT_MODE_INPUT_WARNING, true);
+}
+
+FrameFlatModeInputWarningDialog::FrameFlatModeInputWarningDialog(QWidget* parent) : QDialog(parent)
+{
+  setWindowTitle(tr("Flat-Mode Input Reminder"));
+  setWindowIcon(Resources::GetAppIcon());
+
+  auto* const layout = new QVBoxLayout(this);
+  auto* const reminder = new QLabel(
+      tr("Remember, you must click out of laser pointing mode before trying to control the game! "
+         "Otherwise the game will seem like it has no controls."),
+      this);
+  reminder->setWordWrap(true);
+  layout->addWidget(reminder);
+
+  m_never_show_again = new QCheckBox(tr("Never See This Dialog Again"), this);
+  layout->addWidget(m_never_show_again);
+
+  auto* const buttons = new QDialogButtonBox(QDialogButtonBox::Ok, this);
+  connect(buttons, &QDialogButtonBox::accepted, this, &QDialog::accept);
+  layout->addWidget(buttons);
+}

Source/Core/DolphinQt/FrameFlatModeInputWarningDialog.h

@@ -0,0 +1,22 @@
+// Copyright 2026 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <QDialog>
+
+class QCheckBox;
+class QWidget;
+
+class FrameFlatModeInputWarningDialog final : public QDialog
+{
+  Q_OBJECT
+
+public:
+  static void ShowUnlessDisabled(QWidget* parent = nullptr);
+
+private:
+  explicit FrameFlatModeInputWarningDialog(QWidget* parent = nullptr);
+
+  QCheckBox* m_never_show_again = nullptr;
+};

Source/Core/DolphinQt/MainWindow.cpp

@@ -45,6 +45,7 @@
 #include "Core/BootManager.h"
 #include "Core/CommonTitles.h"
 #include "Core/Config/AchievementSettings.h"
+#include "Core/Config/GraphicsSettings.h"
 #include "Core/Config/MainSettings.h"
 #include "Core/Config/NetplaySettings.h"
 #include "Core/Config/UISettings.h"
@@ -94,6 +95,7 @@
 #include "DolphinQt/EmulatedUSB/LogitechMicWindow.h"
 #include "DolphinQt/EmulatedUSB/WiiSpeakWindow.h"
 #include "DolphinQt/FIFO/FIFOPlayerWindow.h"
+#include "DolphinQt/FrameFlatModeInputWarningDialog.h"
 #include "DolphinQt/GCMemcardManager.h"
 #include "DolphinQt/GameList/GameList.h"
 #include "DolphinQt/Host.h"
@@ -132,6 +134,7 @@
 #include "UICommon/UICommon.h"
 
 #include "VideoCommon/NetPlayChatUI.h"
+#include "VideoCommon/VideoConfig.h"
 
 #ifdef HAVE_XRANDR
 #include "UICommon/X11Utils.h"
@@ -1208,6 +1211,16 @@ void MainWindow::StartGame(std::unique_ptr<BootParameters>&& parameters)
     return;
   }
 
+#ifdef BAIJI_STEAMVR
+  const OpenXRPresentationMode presentation_mode = Config::Get(Config::GFX_VR_PRESENTATION_MODE);
+  if (presentation_mode == OpenXRPresentationMode::Vulkan ||
+      (presentation_mode == OpenXRPresentationMode::Legacy &&
+       !Config::Get(Config::GFX_VR_ENABLE_OPENXR)))
+  {
+    FrameFlatModeInputWarningDialog::ShowUnlessDisabled(this);
+  }
+#endif
+
 #ifdef USE_DISCORD_PRESENCE
   if (!NetPlay::IsNetPlayRunning())
     Discord::UpdateDiscordPresence();