Refactor OpenGL initialization and cleanup code

main.cpp

@@ -1,4 +1,3 @@
-// System/Qt headers
 #include <QGuiApplication>
 #include <QQmlApplicationEngine>
 #include <QOpenGLContext>
@@ -9,21 +8,18 @@
 #include <QQmlContext>
 #include <QSGRendererInterface>
 
-// App headers
 #include "app/game_engine.h"
 #include "ui/gl_view.h"
 
 int main(int argc, char *argv[])
 {
-    // Force desktop OpenGL + GLX path BEFORE any window is created.
     if (qEnvironmentVariableIsSet("WAYLAND_DISPLAY") && qEnvironmentVariableIsSet("DISPLAY")) {
-        qputenv("QT_QPA_PLATFORM", "xcb");   // prefer XCB/GLX over Wayland/EGL when XWayland is present
+        qputenv("QT_QPA_PLATFORM", "xcb");
     }
-    qputenv("QT_OPENGL", "desktop");         // desktop GL, not GLES/EGL
-    qputenv("QSG_RHI_BACKEND", "opengl");    // OpenGL RHI
+    qputenv("QT_OPENGL", "desktop");
+    qputenv("QSG_RHI_BACKEND", "opengl");
     QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGLRhi);
 
-    // Request desktop GL 3.3 core.
     QSurfaceFormat fmt;
     fmt.setVersion(3, 3);
     fmt.setProfile(QSurfaceFormat::CoreProfile);
@@ -37,9 +33,7 @@ int main(int argc, char *argv[])
     auto gameEngine = new GameEngine();
 
     QQmlApplicationEngine engine;
-    // Expose to QML BEFORE loading (safer if QML binds early).
     engine.rootContext()->setContextProperty("game", gameEngine);
-    // Register our GLView item so QML can embed the GL scene inside the scene graph
     qmlRegisterType<GLView>("StandardOfIron", 1, 0, "GLView");
     engine.load(QUrl(QStringLiteral("qrc:/StandardOfIron/ui/qml/Main.qml")));
     if (engine.rootObjects().isEmpty()) {
@@ -55,11 +49,8 @@ int main(int argc, char *argv[])
         return -2;
     }
 
-    // Let Qt Quick manage the clear; keep window color default.
-
     gameEngine->setWindow(window);
 
-    // Informative logging (no current-context check here).
     QObject::connect(window, &QQuickWindow::sceneGraphInitialized, window, [window]() {
         if (auto *ri = window->rendererInterface()) {
             auto api = ri->graphicsApi();
@@ -78,12 +69,8 @@ int main(int argc, char *argv[])
         app.exit(3);
     });
 
-
     qDebug() << "Application started successfully";
     qDebug() << "Assets directory:" << QDir::currentPath() + "/assets";
 
     return app.exec();
 }
-
-// no Q_OBJECT in this TU anymore
-