Don't use partial-restart unless debugger is present.

Works around #9666 for most practical purposes.

Core/Config.cpp

@@ -495,6 +495,9 @@ static ConfigSetting graphicsSettings[] = {
 	ReportedConfigSetting("AutoFrameSkip", &g_Config.bAutoFrameSkip, false, true, true),
 	ConfigSetting("FrameRate", &g_Config.iFpsLimit, 0, true, true),
 	ConfigSetting("FrameSkipUnthrottle", &g_Config.bFrameSkipUnthrottle, &DefaultFrameskipUnthrottle, true, false),
+#if defined(USING_WIN_UI)
+	ConfigSetting("RestartRequired", &g_Config.bRestartRequired, false, false),
+#endif
 	ReportedConfigSetting("ForceMaxEmulatedFPS", &g_Config.iForceMaxEmulatedFPS, 60, true, true),
 
 	// TODO: Hm, on fast mobile GPUs we should definitely default to at least 4 (setting = 2)...

Core/Config.h

@@ -113,6 +113,7 @@ public:
 	bool bTopMost;
 	std::string sFont;
 	bool bIgnoreWindowsKey;
+	bool bRestartRequired;
 #endif
 
 	bool bPauseWhenMinimized;

UI/DevScreens.cpp

@@ -360,6 +360,12 @@ void SystemInfoScreen::CreateViews() {
 	deviceSpecs->Add(new InfoItem("Name", System_GetProperty(SYSPROP_NAME)));
 	deviceSpecs->Add(new InfoItem("Lang/Region", System_GetProperty(SYSPROP_LANGREGION)));
 	deviceSpecs->Add(new InfoItem("ABI", GetCompilerABI()));
+#ifdef _WIN32
+	if (IsDebuggerPresent()) {
+		deviceSpecs->Add(new InfoItem("Debugger Present", "Yes"));
+	}
+#endif
+
 	deviceSpecs->Add(new ItemHeader("CPU Information"));
 	deviceSpecs->Add(new InfoItem("Name", cpu_info.brand_string));
 #if defined(ARM) || defined(ARM64) || defined(MIPS)

Windows/MainWindowMenu.cpp

@@ -566,6 +566,15 @@ namespace MainWindow {
 		NativeMessageReceived("gpu_resized", "");
 	}
 
+	static void RestartApp() {
+		if (IsDebuggerPresent()) {
+			PostMessage(MainWindow::GetHWND(), WM_USER_RESTART_EMUTHREAD, 0, 0);
+		} else {
+			g_Config.bRestartRequired = true;
+			PostMessage(MainWindow::GetHWND(), WM_CLOSE, 0, 0);
+		}
+	}
+
 	void MainWindowMenu_Process(HWND hWnd, WPARAM wParam) {
 		std::string fn;
 
@@ -770,22 +779,22 @@ namespace MainWindow {
 
 		case ID_OPTIONS_DIRECT3D9:
 			g_Config.iGPUBackend = GPU_BACKEND_DIRECT3D9;
-			PostMessage(MainWindow::GetHWND(), WM_USER_RESTART_EMUTHREAD, 0, 0);
+			RestartApp();
 			break;
 
 		case ID_OPTIONS_DIRECT3D11:
 			g_Config.iGPUBackend = GPU_BACKEND_DIRECT3D11;
-			PostMessage(MainWindow::GetHWND(), WM_USER_RESTART_EMUTHREAD, 0, 0);
+			RestartApp();
 			break;
 
 		case ID_OPTIONS_OPENGL:
 			g_Config.iGPUBackend = GPU_BACKEND_OPENGL;
-			PostMessage(MainWindow::GetHWND(), WM_USER_RESTART_EMUTHREAD, 0, 0);
+			RestartApp();
 			break;
 
 		case ID_OPTIONS_VULKAN:
 			g_Config.iGPUBackend = GPU_BACKEND_VULKAN;
-			PostMessage(MainWindow::GetHWND(), WM_USER_RESTART_EMUTHREAD, 0, 0);
+			RestartApp();
 			break;
 
 		case ID_OPTIONS_NONBUFFEREDRENDERING:   setRenderingMode(FB_NON_BUFFERED_MODE); break;

Windows/main.cpp

@@ -242,7 +242,12 @@ void System_SendMessage(const char *command, const char *parameter) {
 			PostMessage(MainWindow::GetHWND(), WM_CLOSE, 0, 0);
 		}
 	} else if (!strcmp(command, "graphics_restart")) {
+		if (IsDebuggerPresent()) {
 			PostMessage(MainWindow::GetHWND(), MainWindow::WM_USER_RESTART_EMUTHREAD, 0, 0);
+		} else {
+			g_Config.bRestartRequired = true;
+			PostMessage(MainWindow::GetHWND(), WM_CLOSE, 0, 0);
+		}
 	} else if (!strcmp(command, "setclipboardtext")) {
 		if (OpenClipboard(MainWindow::GetDisplayHWND())) {
 			std::wstring data = ConvertUTF8ToWString(parameter);
@@ -575,6 +580,10 @@ int WINAPI WinMain(HINSTANCE _hInstance, HINSTANCE hPrevInstance, LPSTR szCmdLin
 
 	LogManager::Shutdown();
 
+	if (g_Config.bRestartRequired) {
+		W32Util::ExitAndRestart();
+	}
+
 	net::Shutdown();
 	CoUninitialize();
 

ext/native/thin3d/thin3d_vulkan.cpp

@@ -922,6 +922,7 @@ void VKContext::SetScissorRect(int left, int top, int width, int height) {
 }
 
 void VKContext::SetViewports(int count, Viewport *viewports) {
+	if (count > 0) {
 		viewport_.x = viewports[0].TopLeftX;
 		viewport_.y = viewports[0].TopLeftY;
 		viewport_.width = viewports[0].Width;
@@ -929,6 +930,7 @@ void VKContext::SetViewports(int count, Viewport *viewports) {
 		viewport_.minDepth = viewports[0].MinDepth;
 		viewport_.maxDepth = viewports[0].MaxDepth;
 		viewportDirty_ = true;
+	}
 }
 
 void VKContext::SetBlendFactor(float color[4]) {