Font 8bithud, classe Text i overlay RenderInfo (F3, persistit a config.yaml) (v0.7.0)

source/core/rendering/screen.hpp

@@ -62,6 +62,10 @@ class Screen {
     [[nodiscard]] auto getCanvasWidth() const -> int { return canvas_width_; }
     [[nodiscard]] auto getCanvasHeight() const -> int { return canvas_height_; }
 
+    // Mètriques per a overlays de debug (RenderInfo).
+    [[nodiscard]] auto getLastFPS() const -> int { return fps_.last_value; }
+    [[nodiscard]] auto getGPUDriver() const -> const std::string& { return gpu_driver_; }
+
    private:
     Screen() = default;
     ~Screen() = default;
@@ -69,6 +73,23 @@ class Screen {
     void destroySdl();
     void createSdl();
 
+    // Comptador intern de frames per segon. S'incrementa a cada present() i
+    // es recalcula quan ha passat un segon complet (SDL_GetTicks en ms).
+    struct FPS {
+        std::uint32_t ticks{0};
+        int frame_count{0};
+        int last_value{0};
+
+        void increment() { ++frame_count; }
+        void calculate(std::uint32_t current_ticks) {
+            if (current_ticks - ticks >= 1000) {
+                last_value = frame_count;
+                frame_count = 0;
+                ticks = current_ticks;
+            }
+        }
+    };
+
     bool subsystem_initialized_{false};
 
     Config config_{};
@@ -83,4 +104,7 @@ class Screen {
     int canvas_width_{0};
     int canvas_height_{0};
     std::vector<std::uint32_t> canvas_;
+
+    FPS fps_{};
+    std::string gpu_driver_;
 };