config: Add option for specifying screen resolution scale factor.

src/citra/config.cpp

@@ -63,8 +63,7 @@ void Config::ReadValues() {
     // Renderer
     Settings::values.use_hw_renderer = sdl2_config->GetBoolean("Renderer", "use_hw_renderer", true);
     Settings::values.use_shader_jit = sdl2_config->GetBoolean("Renderer", "use_shader_jit", true);
-    Settings::values.use_scaled_resolution =
-        sdl2_config->GetBoolean("Renderer", "use_scaled_resolution", false);
+    Settings::values.resolution_factor = sdl2_config->GetReal("Renderer", "resolution_factor", 1.0);
     Settings::values.use_vsync = sdl2_config->GetBoolean("Renderer", "use_vsync", false);
     Settings::values.toggle_framelimit =
         sdl2_config->GetBoolean("Renderer", "toggle_framelimit", true);

src/citra/default_ini.h

@@ -51,9 +51,10 @@ use_hw_renderer =
 # 0: Interpreter (slow), 1 (default): JIT (fast)
 use_shader_jit =
 
-# Whether to use native 3DS screen resolution or to scale rendering resolution to the displayed screen size.
-# 0 (default): Native, 1: Scaled
-use_scaled_resolution =
+# Resolution scale factor
+# 0: Auto (scales resolution to window size), 1: Native 3DS screen resolution, Otherwise a scale
+# factor for the 3DS resolution
+resolution_factor =
 
 # Whether to enable V-Sync (caps the framerate at 60FPS) or not.
 # 0 (default): Off, 1: On

src/citra_qt/config.cpp

@@ -44,8 +44,7 @@ void Config::ReadValues() {
     qt_config->beginGroup("Renderer");
     Settings::values.use_hw_renderer = qt_config->value("use_hw_renderer", true).toBool();
     Settings::values.use_shader_jit = qt_config->value("use_shader_jit", true).toBool();
-    Settings::values.use_scaled_resolution =
-        qt_config->value("use_scaled_resolution", false).toBool();
+    Settings::values.resolution_factor = qt_config->value("resolution_factor", 1.0).toFloat();
     Settings::values.use_vsync = qt_config->value("use_vsync", false).toBool();
     Settings::values.toggle_framelimit = qt_config->value("toggle_framelimit", true).toBool();
 
@@ -152,7 +151,7 @@ void Config::SaveValues() {
     qt_config->beginGroup("Renderer");
     qt_config->setValue("use_hw_renderer", Settings::values.use_hw_renderer);
     qt_config->setValue("use_shader_jit", Settings::values.use_shader_jit);
-    qt_config->setValue("use_scaled_resolution", Settings::values.use_scaled_resolution);
+    qt_config->setValue("resolution_factor", (double)Settings::values.resolution_factor);
     qt_config->setValue("use_vsync", Settings::values.use_vsync);
     qt_config->setValue("toggle_framelimit", Settings::values.toggle_framelimit);
 

src/citra_qt/configure_graphics.cpp

@@ -18,10 +18,81 @@ ConfigureGraphics::ConfigureGraphics(QWidget* parent)
 
 ConfigureGraphics::~ConfigureGraphics() {}
 
+enum class Resolution : int {
+    Auto,
+    Scale1x,
+    Scale2x,
+    Scale3x,
+    Scale4x,
+    Scale5x,
+    Scale6x,
+    Scale7x,
+    Scale8x,
+    Scale9x,
+    Scale10x,
+};
+
+float ToResolutionFactor(Resolution option) {
+    switch (option) {
+    case Resolution::Auto:
+        return 0.f;
+    case Resolution::Scale1x:
+        return 1.f;
+    case Resolution::Scale2x:
+        return 2.f;
+    case Resolution::Scale3x:
+        return 3.f;
+    case Resolution::Scale4x:
+        return 4.f;
+    case Resolution::Scale5x:
+        return 5.f;
+    case Resolution::Scale6x:
+        return 6.f;
+    case Resolution::Scale7x:
+        return 7.f;
+    case Resolution::Scale8x:
+        return 8.f;
+    case Resolution::Scale9x:
+        return 9.f;
+    case Resolution::Scale10x:
+        return 10.f;
+    }
+    return 0.f;
+}
+
+Resolution FromResolutionFactor(float factor) {
+    if (factor == 0.f) {
+        return Resolution::Auto;
+    } else if (factor == 1.f) {
+        return Resolution::Scale1x;
+    } else if (factor == 2.f) {
+        return Resolution::Scale2x;
+    } else if (factor == 3.f) {
+        return Resolution::Scale3x;
+    } else if (factor == 4.f) {
+        return Resolution::Scale4x;
+    } else if (factor == 5.f) {
+        return Resolution::Scale5x;
+    } else if (factor == 6.f) {
+        return Resolution::Scale6x;
+    } else if (factor == 7.f) {
+        return Resolution::Scale7x;
+    } else if (factor == 8.f) {
+        return Resolution::Scale8x;
+    } else if (factor == 9.f) {
+        return Resolution::Scale9x;
+    } else if (factor == 10.f) {
+        return Resolution::Scale10x;
+    }
+    return Resolution::Auto;
+}
+
 void ConfigureGraphics::setConfiguration() {
     ui->toggle_hw_renderer->setChecked(Settings::values.use_hw_renderer);
+    ui->resolution_factor_combobox->setEnabled(Settings::values.use_hw_renderer);
     ui->toggle_shader_jit->setChecked(Settings::values.use_shader_jit);
-    ui->toggle_scaled_resolution->setChecked(Settings::values.use_scaled_resolution);
+    ui->resolution_factor_combobox->setCurrentIndex(
+        static_cast<int>(FromResolutionFactor(Settings::values.resolution_factor)));
     ui->toggle_vsync->setChecked(Settings::values.use_vsync);
     ui->toggle_framelimit->setChecked(Settings::values.toggle_framelimit);
     ui->layout_combobox->setCurrentIndex(static_cast<int>(Settings::values.layout_option));
@@ -31,7 +102,8 @@ void ConfigureGraphics::setConfiguration() {
 void ConfigureGraphics::applyConfiguration() {
     Settings::values.use_hw_renderer = ui->toggle_hw_renderer->isChecked();
     Settings::values.use_shader_jit = ui->toggle_shader_jit->isChecked();
-    Settings::values.use_scaled_resolution = ui->toggle_scaled_resolution->isChecked();
+    Settings::values.resolution_factor =
+        ToResolutionFactor(static_cast<Resolution>(ui->resolution_factor_combobox->currentIndex()));
     Settings::values.use_vsync = ui->toggle_vsync->isChecked();
     Settings::values.toggle_framelimit = ui->toggle_framelimit->isChecked();
     Settings::values.layout_option =

src/citra_qt/configure_graphics.ui

@@ -36,13 +36,6 @@
           </property>
          </widget>
         </item>
-        <item>
-         <widget class="QCheckBox" name="toggle_scaled_resolution">
-          <property name="text">
-           <string>Enable scaled resolution</string>
-          </property>
-         </widget>
-        </item>
         <item>
          <widget class="QCheckBox" name="toggle_vsync">
           <property name="text">
@@ -57,6 +50,76 @@
           </property>
          </widget>
         </item>
+        <item>
+          <layout class="QHBoxLayout" name="horizontalLayout">
+            <item>
+              <widget class="QLabel" name="label">
+                <property name="text">
+                  <string>Internal Resolution:</string>
+                </property>
+              </widget>
+            </item>
+            <item>
+              <widget class="QComboBox" name="resolution_factor_combobox">
+                <item>
+                  <property name="text">
+                    <string notr="true">Auto (Window Size)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">Native (400x240)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">2x Native (800x480)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">3x Native (1200x720)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">4x Native (1600x960)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">5x Native (2000x1200)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">6x Native (2400x1440)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">7x Native (2800x1680)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">8x Native (3200x1920)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">9x Native (3600x2160)</string>
+                  </property>
+                </item>
+                <item>
+                  <property name="text">
+                    <string notr="true">10x Native (4000x2400)</string>
+                  </property>
+                </item>
+              </widget>
+            </item>
+          </layout>
+        </item>
        </layout>
       </widget>
      </item>
@@ -128,5 +191,12 @@
   </layout>
  </widget>
  <resources/>
- <connections/>
+ <connections>
+  <connection>
+   <sender>toggle_hw_renderer</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>resolution_factor_combobox</receiver>
+   <slot>setEnabled(bool)</slot>
+  </connection>
+ </connections>
 </ui>

src/core/settings.cpp

@@ -20,7 +20,6 @@ void Apply() {
 
     VideoCore::g_hw_renderer_enabled = values.use_hw_renderer;
     VideoCore::g_shader_jit_enabled = values.use_shader_jit;
-    VideoCore::g_scaled_resolution_enabled = values.use_scaled_resolution;
     VideoCore::g_toggle_framelimit_enabled = values.toggle_framelimit;
 
     if (VideoCore::g_emu_window) {

src/core/settings.h

@@ -88,7 +88,7 @@ struct Values {
     // Renderer
     bool use_hw_renderer;
     bool use_shader_jit;
-    bool use_scaled_resolution;
+    float resolution_factor;
     bool use_vsync;
     bool toggle_framelimit;
 

src/video_core/renderer_opengl/gl_rasterizer_cache.cpp

@@ -556,14 +556,21 @@ RasterizerCacheOpenGL::GetFramebufferSurfaces(const Pica::Regs::FramebufferConfi
     color_params.width = depth_params.width = config.GetWidth();
     color_params.height = depth_params.height = config.GetHeight();
     color_params.is_tiled = depth_params.is_tiled = true;
-    if (VideoCore::g_scaled_resolution_enabled) {
-        auto layout = VideoCore::g_emu_window->GetFramebufferLayout();
 
-        // Assume same scaling factor for top and bottom screens
+    // Set the internal resolution, assume the same scaling factor for top and bottom screens
+    const Layout::FramebufferLayout& layout = VideoCore::g_emu_window->GetFramebufferLayout();
+    if (Settings::values.resolution_factor == 0.0f) {
+        // Auto - scale resolution to the window size
         color_params.res_scale_width = depth_params.res_scale_width =
             (float)layout.top_screen.GetWidth() / VideoCore::kScreenTopWidth;
         color_params.res_scale_height = depth_params.res_scale_height =
             (float)layout.top_screen.GetHeight() / VideoCore::kScreenTopHeight;
+    } else {
+        // Otherwise, scale the resolution by the specified factor
+        color_params.res_scale_width = Settings::values.resolution_factor;
+        depth_params.res_scale_width = Settings::values.resolution_factor;
+        color_params.res_scale_height = Settings::values.resolution_factor;
+        depth_params.res_scale_height = Settings::values.resolution_factor;
     }
 
     color_params.addr = config.GetColorBufferPhysicalAddress();

src/video_core/video_core.cpp

@@ -19,7 +19,6 @@ std::unique_ptr<RendererBase> g_renderer; ///< Renderer plugin
 
 std::atomic<bool> g_hw_renderer_enabled;
 std::atomic<bool> g_shader_jit_enabled;
-std::atomic<bool> g_scaled_resolution_enabled;
 std::atomic<bool> g_vsync_enabled;
 std::atomic<bool> g_toggle_framelimit_enabled;
 

src/video_core/video_core.h

@@ -37,7 +37,6 @@ extern EmuWindow* g_emu_window;                  ///< Emu window
 // qt ui)
 extern std::atomic<bool> g_hw_renderer_enabled;
 extern std::atomic<bool> g_shader_jit_enabled;
-extern std::atomic<bool> g_scaled_resolution_enabled;
 extern std::atomic<bool> g_toggle_framelimit_enabled;
 
 /// Start the video core