opcions per defecte d'emscripten

source/core/rendering/screen.cpp

@@ -42,10 +42,9 @@ Screen::Screen() {
 
     window_ = SDL_CreateWindow(Locale::get("window.title"), w, h, fullscreen_ ? SDL_WINDOW_FULLSCREEN : 0);
     renderer_ = SDL_CreateRenderer(window_, nullptr);
-    SDL_SetRenderLogicalPresentation(renderer_, GAME_WIDTH, GAME_HEIGHT, SDL_LOGICAL_PRESENTATION_LETTERBOX);
 
     texture_ = SDL_CreateTexture(renderer_, SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STREAMING, GAME_WIDTH, GAME_HEIGHT);
-    SDL_SetTextureScaleMode(texture_, SDL_SCALEMODE_NEAREST);
+    applyFallbackPresentation();
 
     // Inicialitza backend GPU si l'acceleració està activada
     initShaders();
@@ -204,6 +203,8 @@ void Screen::toggleAspectRatio() {
     Options::video.aspect_ratio_4_3 = !Options::video.aspect_ratio_4_3;
     if (shader_backend_) {
         shader_backend_->setStretch4_3(Options::video.aspect_ratio_4_3);
+    } else {
+        applyFallbackPresentation();
     }
     if (!fullscreen_) {
         adjustWindowSize();
@@ -214,6 +215,8 @@ void Screen::toggleIntegerScale() {
     Options::video.integer_scale = !Options::video.integer_scale;
     if (shader_backend_) {
         shader_backend_->setScaleMode(Options::video.integer_scale);
+    } else {
+        applyFallbackPresentation();
     }
 }
 
@@ -228,6 +231,8 @@ void Screen::toggleStretchFilter() {
     Options::video.stretch_filter_linear = !Options::video.stretch_filter_linear;
     if (shader_backend_) {
         shader_backend_->setStretchFilter(Options::video.stretch_filter_linear);
+    } else {
+        applyFallbackPresentation();
     }
 }
 
@@ -383,6 +388,27 @@ void Screen::updateRenderInfo() {
         0b1001);
 }
 
+void Screen::applyFallbackPresentation() {
+    // Fallback SDL_Renderer (p.ex. emscripten/WebGL2 sense shaders GPU): tria
+    // el mode de presentació lògica segons 4:3 i integer_scale, i aplica el
+    // filtre de la textura segons stretch_filter_linear. Sense açò, el path
+    // fallback mostrava sempre LETTERBOX i ignorava les tres flags.
+    SDL_ScaleMode scale = Options::video.stretch_filter_linear ? SDL_SCALEMODE_LINEAR : SDL_SCALEMODE_NEAREST;
+    if (texture_) SDL_SetTextureScaleMode(texture_, scale);
+
+    SDL_RendererLogicalPresentation mode;
+    if (Options::video.aspect_ratio_4_3) {
+        // La finestra ja té aspect 4:3 (alçada × 1.2); STRETCH estira la
+        // textura 320×200 fins a omplir-la exactament.
+        mode = SDL_LOGICAL_PRESENTATION_STRETCH;
+    } else if (Options::video.integer_scale) {
+        mode = SDL_LOGICAL_PRESENTATION_INTEGER_SCALE;
+    } else {
+        mode = SDL_LOGICAL_PRESENTATION_LETTERBOX;
+    }
+    SDL_SetRenderLogicalPresentation(renderer_, GAME_WIDTH, GAME_HEIGHT, mode);
+}
+
 void Screen::adjustWindowSize() {
     int w = GAME_WIDTH * zoom_;
     // Si 4:3 actiu, l'alçada visual és 240 per zoom (200 * 1.2)

source/core/rendering/screen.hpp

@@ -53,6 +53,7 @@ class Screen {
     void adjustWindowSize();
     void calculateMaxZoom();
     void initShaders();
+    void applyFallbackPresentation();  // Logical presentation + scale mode per al path SDL_Renderer
 
     static Screen* instance_;