feat(service-menu): submenu RESOLUCIO amb canvi en calent de l'offscreen

source/core/rendering/sdl_manager.cpp

@@ -385,6 +385,26 @@ void SDLManager::toggleAntialias() {
     }
 }
 
+void SDLManager::setRenderResolution(int w, int h) {
+    if (!Defaults::Rendering::isValidRenderResolution(w, h)) {
+        std::cerr << "[SDLManager] Resolucio no valida (" << w << "x" << h
+                  << "), ignorant.\n";
+        return;
+    }
+    if (w == cfg_->rendering.render_width && h == cfg_->rendering.render_height) {
+        return;  // ja era l'actual
+    }
+    if (!gpu_renderer_.resizeRenderTarget(static_cast<float>(w), static_cast<float>(h))) {
+        std::cerr << "[SDLManager] resizeRenderTarget ha fallat.\n";
+        return;
+    }
+    cfg_->rendering.render_width = w;
+    cfg_->rendering.render_height = h;
+    if (on_persist_) {
+        on_persist_();
+    }
+}
+
 void SDLManager::togglePostFx() {
     const bool NEW_STATE = !gpu_renderer_.isPostFxEnabled();
     gpu_renderer_.setPostFxEnabled(NEW_STATE);

source/core/rendering/sdl_manager.hpp

@@ -30,12 +30,16 @@ class SDLManager {
     auto operator=(const SDLManager&) -> SDLManager& = delete;
 
     // [NUEVO] Gestió de finestra dinàmica
-    void increaseWindowSize();                               // F2: +100px
-    void decreaseWindowSize();                               // F1: -100px
-    void toggleFullscreen();                                 // F3
-    void toggleVSync();                                      // F4
-    void toggleAntialias();                                  // F5
-    void togglePostFx();                                     // F6
+    void increaseWindowSize();  // F2: +100px
+    void decreaseWindowSize();  // F1: -100px
+    void toggleFullscreen();    // F3
+    void toggleVSync();         // F4
+    void toggleAntialias();     // F5
+    void togglePostFx();        // F6
+    // Canvia la resolució del render target offscreen (recrea la textura).
+    // Cal cridar-lo fora d'un frame (event phase, no draw phase). Si el
+    // valor no es un preset valid o ja es l'actual, es no-op.
+    void setRenderResolution(int w, int h);
     auto handleWindowEvent(const SDL_Event& event) -> bool;  // Per a SDL_EVENT_WINDOW_RESIZED
 
     // Funciones principals (renderizado).