address comment

src/core/frontend/framebuffer_layout.cpp

@@ -27,8 +27,10 @@ FramebufferLayout DefaultFrameLayout(u32 width, u32 height) {
     // so just calculate them both even if the other isn't showing.
     FramebufferLayout res{width, height};
 
-    const float emulation_aspect_ratio{static_cast<float>(ScreenUndocked::Height) /
-                                       ScreenUndocked::Width};
+    const float emulation_aspect_ratio =
+        Settings::values.stretch_to_fullscreen
+            ? static_cast<float>(height) / width
+            : static_cast<float>(ScreenUndocked::Height) / ScreenUndocked::Width;
     const auto window_aspect_ratio = static_cast<float>(height) / width;
 
     const Common::Rectangle<u32> screen_window_area{0, 0, width, height};

src/core/settings.cpp

@@ -94,6 +94,7 @@ void LogSettings() {
     LogSetting("Renderer_UseAccurateGpuEmulation", Settings::values.use_accurate_gpu_emulation);
     LogSetting("Renderer_UseAsynchronousGpuEmulation",
                Settings::values.use_asynchronous_gpu_emulation);
+    LogSetting("Renderer_StretchToFullscreen", Settings::values.stretch_to_fullscreen);
     LogSetting("Audio_OutputEngine", Settings::values.sink_id);
     LogSetting("Audio_EnableAudioStretching", Settings::values.enable_audio_stretching);
     LogSetting("Audio_OutputDevice", Settings::values.audio_device_id);

src/core/settings.h

@@ -434,6 +434,7 @@ struct Values {
     bool use_disk_shader_cache;
     bool use_accurate_gpu_emulation;
     bool use_asynchronous_gpu_emulation;
+    bool stretch_to_fullscreen;
     bool force_30fps_mode;
 
     float bg_red;

src/core/telemetry_session.cpp

@@ -188,6 +188,7 @@ void TelemetrySession::AddInitialInfo(Loader::AppLoader& app_loader) {
              Settings::values.use_accurate_gpu_emulation);
     AddField(field_type, "Renderer_UseAsynchronousGpuEmulation",
              Settings::values.use_asynchronous_gpu_emulation);
+    AddField(field_type, "Renderer_StretchToFullscreen", Settings::values.stretch_to_fullscreen);
     AddField(field_type, "System_UseDockedMode", Settings::values.use_docked_mode);
 }
 

src/yuzu/configuration/config.cpp

@@ -639,6 +639,8 @@ void Config::ReadRendererValues() {
         ReadSetting(QStringLiteral("use_accurate_gpu_emulation"), false).toBool();
     Settings::values.use_asynchronous_gpu_emulation =
         ReadSetting(QStringLiteral("use_asynchronous_gpu_emulation"), false).toBool();
+    Settings::values.stretch_to_fullscreen =
+        ReadSetting(QStringLiteral("stretch_to_fullscreen"), false).toBool();
     Settings::values.force_30fps_mode =
         ReadSetting(QStringLiteral("force_30fps_mode"), false).toBool();
 
@@ -1073,6 +1075,8 @@ void Config::SaveRendererValues() {
                  Settings::values.use_accurate_gpu_emulation, false);
     WriteSetting(QStringLiteral("use_asynchronous_gpu_emulation"),
                  Settings::values.use_asynchronous_gpu_emulation, false);
+    WriteSetting(QStringLiteral("stretch_to_fullscreen"), Settings::values.stretch_to_fullscreen,
+                 false);
     WriteSetting(QStringLiteral("force_30fps_mode"), Settings::values.force_30fps_mode, false);
 
     // Cast to double because Qt's written float values are not human-readable

src/yuzu/configuration/configure_graphics.cpp

@@ -102,6 +102,8 @@ void ConfigureGraphics::SetConfiguration() {
     ui->use_accurate_gpu_emulation->setChecked(Settings::values.use_accurate_gpu_emulation);
     ui->use_asynchronous_gpu_emulation->setEnabled(runtime_lock);
     ui->use_asynchronous_gpu_emulation->setChecked(Settings::values.use_asynchronous_gpu_emulation);
+    ui->stretch_to_fullscreen->setEnabled(runtime_lock);
+    ui->stretch_to_fullscreen->setChecked(Settings::values.stretch_to_fullscreen);
     ui->force_30fps_mode->setEnabled(runtime_lock);
     ui->force_30fps_mode->setChecked(Settings::values.force_30fps_mode);
     UpdateBackgroundColorButton(QColor::fromRgbF(Settings::values.bg_red, Settings::values.bg_green,
@@ -118,6 +120,7 @@ void ConfigureGraphics::ApplyConfiguration() {
     Settings::values.use_accurate_gpu_emulation = ui->use_accurate_gpu_emulation->isChecked();
     Settings::values.use_asynchronous_gpu_emulation =
         ui->use_asynchronous_gpu_emulation->isChecked();
+    Settings::values.stretch_to_fullscreen = ui->stretch_to_fullscreen->isChecked();
     Settings::values.force_30fps_mode = ui->force_30fps_mode->isChecked();
     Settings::values.bg_red = static_cast<float>(bg_color.redF());
     Settings::values.bg_green = static_cast<float>(bg_color.greenF());

src/yuzu/configuration/configure_graphics.ui

@@ -91,6 +91,13 @@
           </property>
          </widget>
         </item>
+        <item>
+         <widget class="QCheckBox" name="stretch_to_full">
+          <property name="text">
+           <string>Stretch to full screen</string>
+          </property>
+         </widget>
+        </item>
         <item>
          <widget class="QCheckBox" name="force_30fps_mode">
           <property name="text">

src/yuzu_cmd/config.cpp

@@ -388,6 +388,8 @@ void Config::ReadValues() {
         sdl2_config->GetBoolean("Renderer", "use_accurate_gpu_emulation", false);
     Settings::values.use_asynchronous_gpu_emulation =
         sdl2_config->GetBoolean("Renderer", "use_asynchronous_gpu_emulation", false);
+    Settings::values.stretch_to_fullscreen =
+        sdl2_config->GetBoolean("Renderer", "stretch_to_fullscreen", false);
 
     Settings::values.bg_red = static_cast<float>(sdl2_config->GetReal("Renderer", "bg_red", 0.0));
     Settings::values.bg_green =

src/yuzu_cmd/default_ini.h

@@ -146,6 +146,10 @@ use_accurate_gpu_emulation =
 # 0 : Off (slow), 1 (default): On (fast)
 use_asynchronous_gpu_emulation =
 
+# Whether to stretch to full screen
+# 0 (default): Off, 1 : On
+stretch_to_fullscreen =
+
 # The clear color for the renderer. What shows up on the sides of the bottom screen.
 # Must be in range of 0.0-1.0. Defaults to 1.0 for all.
 bg_red =