Getting list of GPU only when application starts

src/qt_gui/main_window.cpp

@@ -16,6 +16,7 @@
 #include "game_install_dialog.h"
 #include "main_window.h"
 #include "settings_dialog.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
 
 MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent), ui(new Ui::MainWindow) {
     ui->setupUi(this);
@@ -39,6 +40,7 @@ bool MainWindow::Init() {
     CreateConnects();
     SetLastUsedTheme();
     SetLastIconSizeBullet();
+    GetPhysicalDevices();
     // show ui
     setMinimumSize(350, minimumSizeHint().height());
     setWindowTitle(QString::fromStdString("shadPS4 v" + std::string(Common::VERSION)));
@@ -158,6 +160,17 @@ void MainWindow::LoadGameLists() {
     }
 }
 
+void MainWindow::GetPhysicalDevices() {
+    if (m_physical_devices.size() == 0) {
+        Vulkan::Instance instance(false, false);
+        auto physical_devices = instance.GetPhysicalDevices();
+        for (const vk::PhysicalDevice physical_device : physical_devices) {
+            const QString name = QString::fromUtf8(physical_device.getProperties().deviceName, -1);
+            m_physical_devices.push_back(name);
+        }
+    }
+}
+
 void MainWindow::CreateConnects() {
     connect(this, &MainWindow::WindowResized, this, &MainWindow::HandleResize);
     connect(ui->mw_searchbar, &QLineEdit::textChanged, this, &MainWindow::SearchGameTable);
@@ -187,7 +200,7 @@ void MainWindow::CreateConnects() {
             &MainWindow::StartGame);
 
     connect(ui->settingsButton, &QPushButton::clicked, this, [this]() {
-        auto settingsDialog = new SettingsDialog(this);
+        auto settingsDialog = new SettingsDialog(this, &m_physical_devices);
         settingsDialog->exec();
     });
 

src/qt_gui/main_window.h

@@ -54,6 +54,7 @@ private:
     void CreateActions();
     void CreateRecentGameActions();
     void CreateDockWindows();
+    void GetPhysicalDevices();
     void LoadGameLists();
     void CreateConnects();
     void SetLastUsedTheme();
@@ -79,6 +80,9 @@ private:
     QScopedPointer<ElfViewer> m_elf_viewer;
     // Status Bar.
     QScopedPointer<QStatusBar> statusBar;
+    // Available GPU devices
+	std::vector<QString> m_physical_devices;
+
 
     PSF psf;
 

src/qt_gui/settings_dialog.cpp

@@ -3,15 +3,20 @@
 
 #include "settings_dialog.h"
 #include "ui_settings_dialog.h"
-#include "video_core/renderer_vulkan/vk_instance.h"
 
-SettingsDialog::SettingsDialog(QWidget* parent) : QDialog(parent), ui(new Ui::SettingsDialog) {
+SettingsDialog::SettingsDialog(QWidget* parent, std::vector<QString>* physical_devices) : QDialog(parent), ui(new Ui::SettingsDialog) {
     ui->setupUi(this);
     ui->tabWidgetSettings->setUsesScrollButtons(false);
     const auto config_dir = Common::FS::GetUserPath(Common::FS::PathType::UserDir);
 
     ui->buttonBox->button(QDialogButtonBox::StandardButton::Close)->setFocus();
 
+    // Add list of available GPUs
+    ui->graphicsAdapterBox->addItem("Auto Select"); // -1, auto selection
+    for (auto device = physical_devices->begin(); device != physical_devices->end(); ++device) {
+        ui->graphicsAdapterBox->addItem(*device);
+    }
+
     LoadValuesFromConfig();
 
     connect(ui->buttonBox, &QDialogButtonBox::rejected, this, &QWidget::close);
@@ -102,15 +107,6 @@ SettingsDialog::SettingsDialog(QWidget* parent) : QDialog(parent), ui(new Ui::Se
 void SettingsDialog::LoadValuesFromConfig() {
     ui->consoleLanguageComboBox->setCurrentIndex(Config::GetLanguage());
 
-    // Add list of available GPUs
-    ui->graphicsAdapterBox->addItem("Auto Select"); // -1, auto selection
-    Vulkan::Instance instance(false, false);
-    auto physical_devices = instance.GetPhysicalDevices();
-    for (const vk::PhysicalDevice physical_device : physical_devices) {
-        const QString name = QString::fromUtf8(physical_device.getProperties().deviceName, -1);
-        ui->graphicsAdapterBox->addItem(name);
-    }
-
     ui->graphicsAdapterBox->setCurrentIndex(Config::getGpuId() + 1);
     ui->widthSpinBox->setValue(Config::getScreenWidth());
     ui->heightSpinBox->setValue(Config::getScreenHeight());

src/qt_gui/settings_dialog.h

@@ -16,7 +16,8 @@ class SettingsDialog;
 class SettingsDialog : public QDialog {
     Q_OBJECT
 public:
-    explicit SettingsDialog(QWidget* parent = nullptr);
+    explicit SettingsDialog(QWidget* parent = nullptr,
+                            std::vector<QString>* physical_devices = nullptr);
     ~SettingsDialog();
 
     int exec() override;