QtGUI: Add buttton to toggle the filter.

src/common/settings.h

@@ -70,6 +70,7 @@ enum class ScalingFilter : u32 {
     Gaussian = 3,
     ScaleForce = 4,
     Fsr = 5,
+    LastFilter = Fsr,
 };
 
 struct ResolutionScalingInfo {

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -24,6 +24,7 @@
 #include "video_core/host_shaders/opengl_present_frag.h"
 #include "video_core/host_shaders/opengl_present_vert.h"
 #include "video_core/host_shaders/present_bicubic_frag.h"
+#include "video_core/host_shaders/present_gaussian_frag.h"
 #include "video_core/host_shaders/present_scaleforce_frag.h"
 #include "video_core/renderer_opengl/gl_rasterizer.h"
 #include "video_core/renderer_opengl/gl_shader_manager.h"

src/yuzu/configuration/configure_graphics.ui

@@ -429,7 +429,7 @@
              </item>
              <item>
               <property name="text">
-               <string>FidelityFX Super Resolution [Vulkan Only]</string>
+               <string>AMD's FidelityFX™️ Super Resolution [Vulkan Only]</string>
               </property>
              </item>
             </widget>

src/yuzu/main.cpp

@@ -774,6 +774,34 @@ void GMainWindow::InitializeWidgets() {
     tas_label->setFocusPolicy(Qt::NoFocus);
     statusBar()->insertPermanentWidget(0, tas_label);
 
+    // Setup Filter button
+    filter_status_button = new QPushButton();
+    filter_status_button->setObjectName(QStringLiteral("TogglableStatusBarButton"));
+    filter_status_button->setFocusPolicy(Qt::NoFocus);
+    connect(filter_status_button, &QPushButton::clicked, [&] {
+        auto filter = Settings::values.scaling_filter.GetValue();
+        if (filter == Settings::ScalingFilter::LastFilter) {
+            filter = Settings::ScalingFilter::NearestNeighbor;
+        } else {
+            filter = static_cast<Settings::ScalingFilter>(static_cast<u32>(filter) + 1);
+        }
+        if (Settings::values.renderer_backend.GetValue() == Settings::RendererBackend::OpenGL &&
+            filter == Settings::ScalingFilter::Fsr) {
+            filter = Settings::ScalingFilter::NearestNeighbor;
+        }
+        Settings::values.scaling_filter.SetValue(filter);
+        filter_status_button->setChecked(true);
+        UpdateFilterText();
+    });
+    auto filter = Settings::values.scaling_filter.GetValue();
+    if (Settings::values.renderer_backend.GetValue() == Settings::RendererBackend::OpenGL &&
+        filter == Settings::ScalingFilter::Fsr) {
+        Settings::values.scaling_filter.SetValue(Settings::ScalingFilter::NearestNeighbor);
+    }
+    UpdateFilterText();
+    filter_status_button->setCheckable(true);
+    statusBar()->insertPermanentWidget(0, filter_status_button);
+
     // Setup Dock button
     dock_status_button = new QPushButton();
     dock_status_button->setObjectName(QStringLiteral("TogglableStatusBarButton"));
@@ -3033,11 +3061,39 @@ void GMainWindow::UpdateGPUAccuracyButton() {
     }
 }
 
+void GMainWindow::UpdateFilterText() {
+    const auto filter = Settings::values.scaling_filter.GetValue();
+    switch (filter) {
+    case Settings::ScalingFilter::NearestNeighbor:
+        filter_status_button->setText(tr("NEAREST"));
+        break;
+    case Settings::ScalingFilter::Bilinear:
+        filter_status_button->setText(tr("BILINEAR"));
+        break;
+    case Settings::ScalingFilter::Bicubic:
+        filter_status_button->setText(tr("BICUBIC"));
+        break;
+    case Settings::ScalingFilter::Gaussian:
+        filter_status_button->setText(tr("GAUSSIAN"));
+        break;
+    case Settings::ScalingFilter::ScaleForce:
+        filter_status_button->setText(tr("SCALEFORCE"));
+        break;
+    case Settings::ScalingFilter::Fsr:
+        filter_status_button->setText(tr("AMD'S FIDELITYFX SR"));
+        break;
+    default:
+        filter_status_button->setText(tr("BILINEAR"));
+        break;
+    }
+}
+
 void GMainWindow::UpdateStatusButtons() {
     dock_status_button->setChecked(Settings::values.use_docked_mode.GetValue());
     renderer_status_button->setChecked(Settings::values.renderer_backend.GetValue() ==
                                        Settings::RendererBackend::Vulkan);
     UpdateGPUAccuracyButton();
+    UpdateFilterText();
 }
 
 void GMainWindow::UpdateUISettings() {

src/yuzu/main.h

@@ -302,6 +302,7 @@ private:
     void MigrateConfigFiles();
     void UpdateWindowTitle(std::string_view title_name = {}, std::string_view title_version = {},
                            std::string_view gpu_vendor = {});
+    void UpdateFilterText();
     void UpdateStatusBar();
     void UpdateGPUAccuracyButton();
     void UpdateStatusButtons();
@@ -336,6 +337,7 @@ private:
     QPushButton* gpu_accuracy_button = nullptr;
     QPushButton* renderer_status_button = nullptr;
     QPushButton* dock_status_button = nullptr;
+    QPushButton* filter_status_button = nullptr;
     QTimer status_bar_update_timer;
 
     std::unique_ptr<Config> config;