Qt: Portable mode. Fix hang on close.

external/SPIRV-Cross

@@ -1 +1 @@
-Subproject commit 197a273fd494321157f40a962c51b5fa8c9c3581
+Subproject commit 4e2fdb25671c742a9fbe93a6034eb1542244c7e1

external/glslang

@@ -1 +1 @@
-Subproject commit 9c7fd1a33e5cecbe465e1cd70170167d5e40d398
+Subproject commit 3ebb72cc7429f0ab8218104dc3687c659c0f364d

external/imgui/snes9x_imgui.cpp

@@ -297,6 +297,7 @@ void S9xImGuiInit(S9xImGuiInitInfo *init_info)
     }
 
     ImGui::CreateContext();
+    ImGui::GetIO().IniFilename = nullptr;
     ImGui::GetIO().ConfigFlags |= ImGuiConfigFlags_NoMouse;
     ImGui::StyleColorsLight();
     ImFontGlyphRangesBuilder builder;

qt/CMakeLists.txt

@@ -11,6 +11,11 @@ set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 set(CMAKE_GLOBAL_AUTOGEN_TARGET ON)
 
+
+if(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
+set(CMAKE_PREFIX_PATH "../external/qt6-mingw-clang-bin")
+endif()
+
 set(DEFINES SNES9X_QT)
 set(SNES9X_CORE_SOURCES
     ../fxinst.cpp

qt/src/EmuApplication.cpp

@@ -215,6 +215,8 @@ void EmuApplication::stopThread()
     {
         std::this_thread::yield();
     }
+
+    emu_thread = nullptr;
 }
 
 void EmuApplication::unpause()

qt/src/EmuConfig.cpp

@@ -8,6 +8,8 @@ namespace fs = std::filesystem;
 #include "EmuBinding.hpp"
 #include <functional>
 #include <QSettings>
+#include <QGuiApplication>
+#include <QDir>
 
 static const char *shortcut_names[] =
 {
@@ -142,6 +144,11 @@ std::string EmuConfig::findConfigDir()
     char *dir;
     fs::path path;
 
+    auto app_dir_path = QGuiApplication::applicationDirPath();
+    auto config_file = QDir(app_dir_path).absoluteFilePath("snes9x.conf");
+    if (QFile::exists(config_file))
+        return app_dir_path.toStdString();
+
 #ifndef _WIN32
     if ((dir = getenv("XDG_CONFIG_HOME")))
     {