treballant en sdl3gpu

source/core/rendering/screen.hpp

@@ -3,6 +3,9 @@
 #include <SDL3/SDL.h>
 
 #include <cstdint>
+#include <memory>
+
+#include "core/rendering/shader_backend.hpp"
 
 class Screen {
    public:
@@ -19,9 +22,20 @@ class Screen {
     void decZoom();
     void setZoom(int zoom);
 
+    // Shaders i vídeo
+    void toggleShaders();
+    void toggleSupersampling();
+    void toggleAspectRatio();
+    void toggleIntegerScale();
+    void nextShaderPreset();  // Futur: ciclar presets
+    void setActiveShader(Rendering::ShaderType type);
+    void applyCurrentPostFXPreset();
+    void applyCurrentCrtPiPreset();
+
     // Getters
     [[nodiscard]] auto isFullscreen() const -> bool { return fullscreen_; }
     [[nodiscard]] auto getZoom() const -> int { return zoom_; }
+    [[nodiscard]] auto isHardwareAccelerated() const -> bool;
     [[nodiscard]] auto getWindow() -> SDL_Window* { return window_; }
     [[nodiscard]] auto getRenderer() -> SDL_Renderer* { return renderer_; }
 
@@ -31,12 +45,16 @@ class Screen {
 
     void adjustWindowSize();
     void calculateMaxZoom();
+    void initShaders();
 
     static Screen* instance_;
 
     SDL_Window* window_{nullptr};
     SDL_Renderer* renderer_{nullptr};
-    SDL_Texture* texture_{nullptr};  // 320x200 streaming, ARGB8888
+    SDL_Texture* texture_{nullptr};  // 320x200 streaming, ABGR8888 (fallback SDL_Renderer)
+
+    // Backend GPU (nullptr si no disponible o desactivat)
+    std::unique_ptr<Rendering::ShaderBackend> shader_backend_;
 
     int zoom_{3};
     int max_zoom_{6};