EnhancementsWidget:: Move to using ConfigControls and add new control for ComboBoxes that set two settings at once.

5 files changed, 319 insertions, 271 deletions

diff --git a/Source/Core/DolphinQt/Config/ConfigControls/ConfigChoice.cpp b/Source/Core/DolphinQt/Config/ConfigControls/ConfigChoice.cpp
index c2652563d1..b1c12a4172 100644
--- a/Source/Core/DolphinQt/Config/ConfigControls/ConfigChoice.cpp
+++ b/Source/Core/DolphinQt/Config/ConfigControls/ConfigChoice.cpp
@@ -71,3 +71,102 @@ void ConfigStringChoice::OnConfigChanged()
 {
   Load();
 }
+
+ConfigComplexChoice::ConfigComplexChoice(const InfoVariant setting1, const InfoVariant setting2,
+                                         Config::Layer* layer)
+    : m_setting1(setting1), m_setting2(setting2), m_layer(layer)
+{
+  connect(&Settings::Instance(), &Settings::ConfigChanged, this, &ConfigComplexChoice::Refresh);
+  connect(this, &QComboBox::currentIndexChanged, this, &ConfigComplexChoice::SaveValue);
+}
+
+void ConfigComplexChoice::Refresh()
+{
+  auto& location = GetLocation();
+
+  QFont bf = font();
+  if (m_layer != nullptr)
+  {
+    bf.setBold(m_layer->Exists(location.first) || m_layer->Exists(location.second));
+  }
+  else
+  {
+    bf.setBold(Config::GetActiveLayerForConfig(location.first) != Config::LayerType::Base ||
+               Config::GetActiveLayerForConfig(location.second) != Config::LayerType::Base);
+  }
+
+  setFont(bf);
+  UpdateComboIndex();
+}
+
+void ConfigComplexChoice::Add(const QString& name, const OptionVariant option1,
+                              const OptionVariant option2)
+{
+  const QSignalBlocker blocker(this);
+  addItem(name);
+  m_options.push_back(std::make_pair(option1, option2));
+}
+
+void ConfigComplexChoice::Reset()
+{
+  clear();
+  m_options.clear();
+}
+
+void ConfigComplexChoice::SaveValue(int choice)
+{
+  auto Set = [this, choice](auto& setting, auto& value) {
+    if (m_layer != nullptr)
+    {
+      m_layer->Set(setting.GetLocation(), value);
+      Config::OnConfigChanged();
+      return;
+    }
+
+    Config::SetBaseOrCurrent(setting, value);
+  };
+
+  std::visit(Set, m_setting1, m_options[choice].first);
+  std::visit(Set, m_setting2, m_options[choice].second);
+}
+
+void ConfigComplexChoice::UpdateComboIndex()
+{
+  auto Get = [this](auto& setting) {
+    if (m_layer != nullptr)
+      return static_cast<OptionVariant>(m_layer->Get(setting));
+
+    return static_cast<OptionVariant>(Config::Get(setting));
+  };
+
+  std::pair<OptionVariant, OptionVariant> values =
+      std::make_pair(std::visit(Get, m_setting1), std::visit(Get, m_setting2));
+
+  auto it = std::find(m_options.begin(), m_options.end(), values);
+  int index = static_cast<int>(std::distance(m_options.begin(), it));
+
+  const QSignalBlocker blocker(this);
+  setCurrentIndex(index);
+}
+
+const std::pair<Config::Location, Config::Location> ConfigComplexChoice::GetLocation() const
+{
+  auto visit = [](auto& v) { return v.GetLocation(); };
+
+  return {std::visit(visit, m_setting1), std::visit(visit, m_setting2)};
+}
+
+void ConfigComplexChoice::mousePressEvent(QMouseEvent* event)
+{
+  if (event->button() == Qt::RightButton && m_layer != nullptr)
+  {
+    auto& location = GetLocation();
+    m_layer->DeleteKey(location.first);
+    m_layer->DeleteKey(location.second);
+    Config::OnConfigChanged();
+  }
+  else
+  {
+    QComboBox::mousePressEvent(event);
+  }
+};
diff --git a/Source/Core/DolphinQt/Config/ConfigControls/ConfigChoice.h b/Source/Core/DolphinQt/Config/ConfigControls/ConfigChoice.h
index fa2bdf6f88..8134487402 100644
--- a/Source/Core/DolphinQt/Config/ConfigControls/ConfigChoice.h
+++ b/Source/Core/DolphinQt/Config/ConfigControls/ConfigChoice.h
@@ -51,3 +51,30 @@ private:
   const Config::Info<std::string>& m_setting;
   bool m_text_is_data = false;
 };
+
+class ConfigComplexChoice final : public ToolTipComboBox
+{
+  Q_OBJECT
+
+  using InfoVariant = std::variant<Config::Info<u32>, Config::Info<int>, Config::Info<bool>>;
+  using OptionVariant = std::variant<u32, int, bool>;
+
+public:
+  ConfigComplexChoice(const InfoVariant setting1, const InfoVariant setting2,
+                      Config::Layer* layer = nullptr);
+
+  void Add(const QString& name, const OptionVariant option1, const OptionVariant option2);
+  void Refresh();
+  void Reset();
+  const std::pair<Config::Location, Config::Location> GetLocation() const;
+
+private:
+  void SaveValue(int choice);
+  void UpdateComboIndex();
+  void mousePressEvent(QMouseEvent* event) override;
+
+  Config::Layer* m_layer;
+  const InfoVariant m_setting1;
+  const InfoVariant m_setting2;
+  std::vector<std::pair<OptionVariant, OptionVariant>> m_options;
+};
diff --git a/Source/Core/DolphinQt/Config/GameConfigWidget.cpp b/Source/Core/DolphinQt/Config/GameConfigWidget.cpp
index 30109f1b9c..c53e8e8379 100644
--- a/Source/Core/DolphinQt/Config/GameConfigWidget.cpp
+++ b/Source/Core/DolphinQt/Config/GameConfigWidget.cpp
@@ -363,4 +363,15 @@ void GameConfigWidget::SetItalics()
     italics(config);
   for (auto* config : findChildren<ConfigStringChoice*>())
     italics(config);
+
+  for (auto* config : findChildren<ConfigComplexChoice*>())
+  {
+    std::pair<Config::Location, Config::Location> location = config->GetLocation();
+    if (m_global_layer->Exists(location.first) || m_global_layer->Exists(location.second))
+    {
+      QFont ifont = config->font();
+      ifont.setItalic(true);
+      config->setFont(ifont);
+    }
+  }
 }
diff --git a/Source/Core/DolphinQt/Config/Graphics/EnhancementsWidget.cpp b/Source/Core/DolphinQt/Config/Graphics/EnhancementsWidget.cpp
index 3fd3ec42d8..9854a47b23 100644
--- a/Source/Core/DolphinQt/Config/Graphics/EnhancementsWidget.cpp
+++ b/Source/Core/DolphinQt/Config/Graphics/EnhancementsWidget.cpp
@@ -11,6 +11,8 @@
 #include <QPushButton>
 #include <QVBoxLayout>
 
+#include "Common/CommonTypes.h"
+
 #include "Core/Config/GraphicsSettings.h"
 #include "Core/ConfigManager.h"
 
@@ -32,40 +34,43 @@
 #include "VideoCommon/VideoCommon.h"
 #include "VideoCommon/VideoConfig.h"
 
-EnhancementsWidget::EnhancementsWidget(GraphicsWindow* parent) : m_block_save(false)
+EnhancementsWidget::EnhancementsWidget(GraphicsWindow* parent)
 {
   CreateWidgets();
-  LoadSettings();
+  LoadPPShaders();
   ConnectWidgets();
   AddDescriptions();
-  connect(parent, &GraphicsWindow::BackendChanged,
-          [this](const QString& backend) { LoadSettings(); });
-  connect(parent, &GraphicsWindow::UseFastTextureSamplingChanged, this,
-          &EnhancementsWidget::LoadSettings);
-  connect(parent, &GraphicsWindow::UseGPUTextureDecodingChanged, this,
-          &EnhancementsWidget::LoadSettings);
+
+  // BackendChanged is called by parent on window creation.
+  connect(parent, &GraphicsWindow::BackendChanged, this, &EnhancementsWidget::OnBackendChanged);
+  connect(parent, &GraphicsWindow::UseFastTextureSamplingChanged, this, [this]() {
+    m_texture_filtering_combo->setEnabled(ReadSetting(Config::GFX_HACK_FAST_TEXTURE_SAMPLING));
+  });
+  connect(parent, &GraphicsWindow::UseGPUTextureDecodingChanged, this, [this]() {
+    m_arbitrary_mipmap_detection->setEnabled(!ReadSetting(Config::GFX_ENABLE_GPU_TEXTURE_DECODING));
+  });
 }
 
 EnhancementsWidget::EnhancementsWidget(GameConfigWidget* parent, Config::Layer* layer)
     : m_game_layer(layer)
 {
   CreateWidgets();
-  LoadSettings();
+  LoadPPShaders();
   ConnectWidgets();
   AddDescriptions();
+
+  connect(&Settings::Instance(), &Settings::ConfigChanged, this,
+          &EnhancementsWidget::OnConfigChanged);
 }
 
-constexpr int TEXTURE_FILTERING_DEFAULT = 0;
-constexpr int TEXTURE_FILTERING_ANISO_2X = 1;
-constexpr int TEXTURE_FILTERING_ANISO_4X = 2;
-constexpr int TEXTURE_FILTERING_ANISO_8X = 3;
-constexpr int TEXTURE_FILTERING_ANISO_16X = 4;
-constexpr int TEXTURE_FILTERING_FORCE_NEAREST = 5;
-constexpr int TEXTURE_FILTERING_FORCE_LINEAR = 6;
-constexpr int TEXTURE_FILTERING_FORCE_LINEAR_ANISO_2X = 7;
-constexpr int TEXTURE_FILTERING_FORCE_LINEAR_ANISO_4X = 8;
-constexpr int TEXTURE_FILTERING_FORCE_LINEAR_ANISO_8X = 9;
-constexpr int TEXTURE_FILTERING_FORCE_LINEAR_ANISO_16X = 10;
+constexpr int ANISO_DEFAULT = 0;
+constexpr int ANISO_2X = 1;
+constexpr int ANISO_4X = 2;
+constexpr int ANISO_8X = 3;
+constexpr int ANISO_16X = 4;
+constexpr int FILTERING_DEFAULT = 0;
+constexpr int FILTERING_NEAREST = 1;
+constexpr int FILTERING_LINEAR = 2;
 
 void EnhancementsWidget::CreateWidgets()
 {
@@ -93,7 +98,7 @@ void EnhancementsWidget::CreateWidgets()
   // If the current scale is greater than the max scale in the ini, add sufficient options so that
   // when the settings are saved we don't lose the user-modified value from the ini.
   const int max_efb_scale =
-      std::max(Config::Get(Config::GFX_EFB_SCALE), Config::Get(Config::GFX_MAX_EFB_SCALE));
+      std::max(ReadSetting(Config::GFX_EFB_SCALE), ReadSetting(Config::GFX_MAX_EFB_SCALE));
   for (int scale = static_cast<int>(resolution_options.size()); scale <= max_efb_scale; scale++)
   {
     const QString scale_text = QString::number(scale);
@@ -117,45 +122,40 @@ void EnhancementsWidget::CreateWidgets()
   m_ir_combo = new ConfigChoice(resolution_options, Config::GFX_EFB_SCALE, m_game_layer);
   m_ir_combo->setMaxVisibleItems(visible_resolution_option_count);
 
-  m_aa_combo = new ToolTipComboBox();
-
-  m_texture_filtering_combo = new ToolTipComboBox();
-  m_texture_filtering_combo->addItem(tr("Default"), TEXTURE_FILTERING_DEFAULT);
-  m_texture_filtering_combo->addItem(tr("2x Anisotropic"), TEXTURE_FILTERING_ANISO_2X);
-  m_texture_filtering_combo->addItem(tr("4x Anisotropic"), TEXTURE_FILTERING_ANISO_4X);
-  m_texture_filtering_combo->addItem(tr("8x Anisotropic"), TEXTURE_FILTERING_ANISO_8X);
-  m_texture_filtering_combo->addItem(tr("16x Anisotropic"), TEXTURE_FILTERING_ANISO_16X);
-  m_texture_filtering_combo->addItem(tr("Force Nearest"), TEXTURE_FILTERING_FORCE_NEAREST);
-  m_texture_filtering_combo->addItem(tr("Force Linear"), TEXTURE_FILTERING_FORCE_LINEAR);
-  m_texture_filtering_combo->addItem(tr("Force Linear and 2x Anisotropic"),
-                                     TEXTURE_FILTERING_FORCE_LINEAR_ANISO_2X);
-  m_texture_filtering_combo->addItem(tr("Force Linear and 4x Anisotropic"),
-                                     TEXTURE_FILTERING_FORCE_LINEAR_ANISO_4X);
-  m_texture_filtering_combo->addItem(tr("Force Linear and 8x Anisotropic"),
-                                     TEXTURE_FILTERING_FORCE_LINEAR_ANISO_8X);
-  m_texture_filtering_combo->addItem(tr("Force Linear and 16x Anisotropic"),
-                                     TEXTURE_FILTERING_FORCE_LINEAR_ANISO_16X);
-
-  m_output_resampling_combo = new ToolTipComboBox();
-  m_output_resampling_combo->addItem(tr("Default"),
-                                     static_cast<int>(OutputResamplingMode::Default));
-  m_output_resampling_combo->addItem(tr("Bilinear"),
-                                     static_cast<int>(OutputResamplingMode::Bilinear));
-  m_output_resampling_combo->addItem(tr("Bicubic: B-Spline"),
-                                     static_cast<int>(OutputResamplingMode::BSpline));
-  m_output_resampling_combo->addItem(tr("Bicubic: Mitchell-Netravali"),
-                                     static_cast<int>(OutputResamplingMode::MitchellNetravali));
-  m_output_resampling_combo->addItem(tr("Bicubic: Catmull-Rom"),
-                                     static_cast<int>(OutputResamplingMode::CatmullRom));
-  m_output_resampling_combo->addItem(tr("Sharp Bilinear"),
-                                     static_cast<int>(OutputResamplingMode::SharpBilinear));
-  m_output_resampling_combo->addItem(tr("Area Sampling"),
-                                     static_cast<int>(OutputResamplingMode::AreaSampling));
+  m_aa_combo = new ConfigComplexChoice(Config::GFX_MSAA, Config::GFX_SSAA, m_game_layer);
+  m_aa_combo->Add(tr("None"), (u32)1, false);
+
+  m_texture_filtering_combo =
+      new ConfigComplexChoice(Config::GFX_ENHANCE_MAX_ANISOTROPY,
+                              Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING, m_game_layer);
+
+  m_texture_filtering_combo->Add(tr("Default"), ANISO_DEFAULT, FILTERING_DEFAULT);
+  m_texture_filtering_combo->Add(tr("2x Anisotropic"), ANISO_2X, FILTERING_DEFAULT);
+  m_texture_filtering_combo->Add(tr("4x Anisotropic"), ANISO_4X, FILTERING_DEFAULT);
+  m_texture_filtering_combo->Add(tr("8x Anisotropic"), ANISO_8X, FILTERING_DEFAULT);
+  m_texture_filtering_combo->Add(tr("16x Anisotropic"), ANISO_16X, FILTERING_DEFAULT);
+  m_texture_filtering_combo->Add(tr("Force Nearest"), ANISO_DEFAULT, FILTERING_NEAREST);
+  m_texture_filtering_combo->Add(tr("Force Linear"), ANISO_DEFAULT, FILTERING_LINEAR);
+  m_texture_filtering_combo->Add(tr("Force Linear and 2x Anisotropic"), ANISO_2X, FILTERING_LINEAR);
+  m_texture_filtering_combo->Add(tr("Force Linear and 4x Anisotropic"), ANISO_4X, FILTERING_LINEAR);
+  m_texture_filtering_combo->Add(tr("Force Linear and 8x Anisotropic"), ANISO_8X, FILTERING_LINEAR);
+  m_texture_filtering_combo->Add(tr("Force Linear and 16x Anisotropic"), ANISO_16X,
+                                 FILTERING_LINEAR);
+  m_texture_filtering_combo->Refresh();
+  m_texture_filtering_combo->setEnabled(ReadSetting(Config::GFX_HACK_FAST_TEXTURE_SAMPLING));
+
+  m_output_resampling_combo = new ConfigChoice(
+      {tr("Default"), tr("Bilinear"), tr("Bicubic: B-Spline"), tr("Bicubic: Mitchell-Netravali"),
+       tr("Bicubic: Catmull-Rom"), tr("Sharp Bilinear"), tr("Area Sampling")},
+      Config::GFX_ENHANCE_OUTPUT_RESAMPLING, m_game_layer);
 
   m_configure_color_correction = new ToolTipPushButton(tr("Configure"));
 
-  m_pp_effect = new ToolTipComboBox();
+  m_pp_effect = new ConfigStringChoice(VideoCommon::PostProcessing::GetShaderList(),
+                                       Config::GFX_ENHANCE_POST_SHADER, m_game_layer);
   m_configure_pp_effect = new NonDefaultQPushButton(tr("Configure"));
+  m_configure_pp_effect->setDisabled(true);
+
   m_scaled_efb_copy =
       new ConfigBool(tr("Scaled EFB Copy"), Config::GFX_HACK_COPY_EFB_SCALED, m_game_layer);
   m_per_pixel_lighting =
@@ -171,6 +171,7 @@ void EnhancementsWidget::CreateWidgets()
   m_arbitrary_mipmap_detection =
       new ConfigBool(tr("Arbitrary Mipmap Detection"),
                      Config::GFX_ENHANCE_ARBITRARY_MIPMAP_DETECTION, m_game_layer);
+  m_arbitrary_mipmap_detection->setEnabled(!ReadSetting(Config::GFX_ENABLE_GPU_TEXTURE_DECODING));
   m_hdr = new ConfigBool(tr("HDR Post-Processing"), Config::GFX_ENHANCE_HDR_OUTPUT, m_game_layer);
 
   int row = 0;
@@ -242,7 +243,7 @@ void EnhancementsWidget::CreateWidgets()
   stereoscopy_layout->addWidget(m_3d_swap_eyes, 3, 0);
   stereoscopy_layout->addWidget(m_3d_per_eye_resolution, 4, 0);
 
-  auto current_stereo_mode = Config::Get(Config::GFX_STEREO_MODE);
+  auto current_stereo_mode = ReadSetting(Config::GFX_STEREO_MODE);
   if (current_stereo_mode != StereoMode::SBS && current_stereo_mode != StereoMode::TAB)
     m_3d_per_eye_resolution->hide();
 
@@ -255,58 +256,53 @@ void EnhancementsWidget::CreateWidgets()
 
 void EnhancementsWidget::ConnectWidgets()
 {
-  connect(m_aa_combo, &QComboBox::currentIndexChanged, [this](int) { SaveSettings(); });
-  connect(m_texture_filtering_combo, &QComboBox::currentIndexChanged,
-          [this](int) { SaveSettings(); });
-  connect(m_output_resampling_combo, &QComboBox::currentIndexChanged,
-          [this](int) { SaveSettings(); });
-  connect(m_pp_effect, &QComboBox::currentIndexChanged, [this](int) { SaveSettings(); });
   connect(m_3d_mode, &QComboBox::currentIndexChanged, [this] {
-    m_block_save = true;
-    m_configure_color_correction->setEnabled(g_Config.backend_info.bSupportsPostProcessing);
-
-    auto current_stereo_mode = Config::Get(Config::GFX_STEREO_MODE);
-    LoadPPShaders(current_stereo_mode);
+    auto current_stereo_mode = ReadSetting(Config::GFX_STEREO_MODE);
+    LoadPPShaders();
 
     if (current_stereo_mode == StereoMode::SBS || current_stereo_mode == StereoMode::TAB)
       m_3d_per_eye_resolution->show();
     else
       m_3d_per_eye_resolution->hide();
-
-    m_block_save = false;
-    SaveSettings();
   });
+
+  connect(m_pp_effect, &QComboBox::currentIndexChanged, this, &EnhancementsWidget::ShaderChanged);
+
   connect(m_configure_color_correction, &QPushButton::clicked, this,
           &EnhancementsWidget::ConfigureColorCorrection);
   connect(m_configure_pp_effect, &QPushButton::clicked, this,
           &EnhancementsWidget::ConfigurePostProcessingShader);
+}
 
-  connect(&Settings::Instance(), &Settings::ConfigChanged, this, [this] {
-    const QSignalBlocker blocker(this);
-    m_block_save = true;
-    LoadPPShaders(Config::Get(Config::GFX_STEREO_MODE));
-    m_block_save = false;
-  });
+template <typename T>
+T EnhancementsWidget::ReadSetting(const Config::Info<T>& setting) const
+{
+  if (m_game_layer != nullptr)
+    return m_game_layer->Get(setting);
+  else
+    return Config::Get(setting);
 }
 
-void EnhancementsWidget::LoadPPShaders(StereoMode stereo_mode)
+void EnhancementsWidget::LoadPPShaders()
 {
+  auto stereo_mode = ReadSetting(Config::GFX_STEREO_MODE);
+
+  const QSignalBlocker blocker(m_pp_effect);
+  m_pp_effect->clear();
+
+  // Get shader list
   std::vector<std::string> shaders = VideoCommon::PostProcessing::GetShaderList();
+
   if (stereo_mode == StereoMode::Anaglyph)
-  {
     shaders = VideoCommon::PostProcessing::GetAnaglyphShaderList();
-  }
   else if (stereo_mode == StereoMode::Passive)
-  {
     shaders = VideoCommon::PostProcessing::GetPassiveShaderList();
-  }
-
-  m_pp_effect->clear();
 
+  // Populate widget
   if (stereo_mode != StereoMode::Anaglyph && stereo_mode != StereoMode::Passive)
     m_pp_effect->addItem(tr("(off)"));
 
-  auto selected_shader = Config::Get(Config::GFX_ENHANCE_POST_SHADER);
+  auto selected_shader = ReadSetting(Config::GFX_ENHANCE_POST_SHADER);
 
   bool found = false;
 
@@ -320,6 +316,7 @@ void EnhancementsWidget::LoadPPShaders(StereoMode stereo_mode)
     }
   }
 
+  // Force a shader for StereoModes that require it.
   if (!found)
   {
     if (stereo_mode == StereoMode::Anaglyph)
@@ -335,103 +332,20 @@ void EnhancementsWidget::LoadPPShaders(StereoMode stereo_mode)
     else
       m_pp_effect->setCurrentIndex(0);
 
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_POST_SHADER, selected_shader);
+    // Save forced shader, but avoid forcing an option into a game ini layer.
+    if (m_game_layer == nullptr && ReadSetting(Config::GFX_ENHANCE_POST_SHADER) != selected_shader)
+      Config::SetBaseOrCurrent(Config::GFX_ENHANCE_POST_SHADER, selected_shader);
   }
 
-  const bool supports_postprocessing = g_Config.backend_info.bSupportsPostProcessing;
-  m_pp_effect->setEnabled(supports_postprocessing);
-
-  m_pp_effect->setToolTip(supports_postprocessing ?
-                              QString{} :
-                              tr("%1 doesn't support this feature.")
-                                  .arg(tr(g_video_backend->GetDisplayName().c_str())));
-
-  VideoCommon::PostProcessingConfiguration pp_shader;
-  if (selected_shader != "" && supports_postprocessing)
-  {
-    pp_shader.LoadShader(selected_shader);
-    m_configure_pp_effect->setEnabled(pp_shader.HasOptions());
-  }
-  else
-  {
-    m_configure_pp_effect->setEnabled(false);
-  }
+  m_pp_effect->Load();
+  ShaderChanged();
 }
 
-void EnhancementsWidget::LoadSettings()
+void EnhancementsWidget::OnBackendChanged()
 {
-  m_block_save = true;
-  m_texture_filtering_combo->setEnabled(Config::Get(Config::GFX_HACK_FAST_TEXTURE_SAMPLING));
-  m_arbitrary_mipmap_detection->setEnabled(!Config::Get(Config::GFX_ENABLE_GPU_TEXTURE_DECODING));
-
-  // Anti-Aliasing
-
-  const u32 aa_selection = Config::Get(Config::GFX_MSAA);
-  const bool ssaa = Config::Get(Config::GFX_SSAA);
-  const int aniso = Config::Get(Config::GFX_ENHANCE_MAX_ANISOTROPY);
-  const TextureFilteringMode tex_filter_mode =
-      Config::Get(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING);
-
-  m_aa_combo->clear();
-
-  for (const u32 aa_mode : g_Config.backend_info.AAModes)
-  {
-    if (aa_mode == 1)
-      m_aa_combo->addItem(tr("None"), 1);
-    else
-      m_aa_combo->addItem(tr("%1x MSAA").arg(aa_mode), static_cast<int>(aa_mode));
-
-    if (aa_mode == aa_selection && !ssaa)
-      m_aa_combo->setCurrentIndex(m_aa_combo->count() - 1);
-  }
-  if (g_Config.backend_info.bSupportsSSAA)
-  {
-    for (const u32 aa_mode : g_Config.backend_info.AAModes)
-    {
-      if (aa_mode != 1)  // don't show "None" twice
-      {
-        // Mark SSAA using negative values in the variant
-        m_aa_combo->addItem(tr("%1x SSAA").arg(aa_mode), -static_cast<int>(aa_mode));
-        if (aa_mode == aa_selection && ssaa)
-          m_aa_combo->setCurrentIndex(m_aa_combo->count() - 1);
-      }
-    }
-  }
-
-  m_aa_combo->setEnabled(m_aa_combo->count() > 1);
-
-  switch (tex_filter_mode)
-  {
-  case TextureFilteringMode::Default:
-    if (aniso >= 0 && aniso <= 4)
-      m_texture_filtering_combo->setCurrentIndex(aniso);
-    else
-      m_texture_filtering_combo->setCurrentIndex(TEXTURE_FILTERING_DEFAULT);
-    break;
-  case TextureFilteringMode::Nearest:
-    m_texture_filtering_combo->setCurrentIndex(TEXTURE_FILTERING_FORCE_NEAREST);
-    break;
-  case TextureFilteringMode::Linear:
-    if (aniso >= 0 && aniso <= 4)
-      m_texture_filtering_combo->setCurrentIndex(TEXTURE_FILTERING_FORCE_LINEAR + aniso);
-    else
-      m_texture_filtering_combo->setCurrentIndex(TEXTURE_FILTERING_FORCE_LINEAR);
-    break;
-  }
-
-  // Resampling
-  const OutputResamplingMode output_resampling_mode =
-      Config::Get(Config::GFX_ENHANCE_OUTPUT_RESAMPLING);
-  m_output_resampling_combo->setCurrentIndex(
-      m_output_resampling_combo->findData(static_cast<int>(output_resampling_mode)));
-
   m_output_resampling_combo->setEnabled(g_Config.backend_info.bSupportsPostProcessing);
-
-  // Color Correction
   m_configure_color_correction->setEnabled(g_Config.backend_info.bSupportsPostProcessing);
-
-  // Post Processing Shader
-  LoadPPShaders(Config::Get(Config::GFX_STEREO_MODE));
+  m_hdr->setEnabled(g_Config.backend_info.bSupportsHDROutput);
 
   // Stereoscopy
   const bool supports_stereoscopy = g_Config.backend_info.bSupportsGeometryShaders;
@@ -440,105 +354,98 @@ void EnhancementsWidget::LoadSettings()
   m_3d_depth->setEnabled(supports_stereoscopy);
   m_3d_swap_eyes->setEnabled(supports_stereoscopy);
 
-  m_hdr->setEnabled(g_Config.backend_info.bSupportsHDROutput);
+  // PostProcessing
+  const bool supports_postprocessing = g_Config.backend_info.bSupportsPostProcessing;
+  if (!supports_postprocessing)
+  {
+    m_configure_pp_effect->setEnabled(false);
+    m_pp_effect->setEnabled(false);
+    m_pp_effect->setToolTip(
+        tr("%1 doesn't support this feature.").arg(tr(g_video_backend->GetDisplayName().c_str())));
+  }
+  else if (!m_pp_effect->isEnabled() && supports_postprocessing)
+  {
+    m_configure_pp_effect->setEnabled(true);
+    m_pp_effect->setEnabled(true);
+    m_pp_effect->setToolTip(QString{});
+    LoadPPShaders();
+  }
 
-  m_block_save = false;
+  UpdateAAOptions();
 }
 
-void EnhancementsWidget::SaveSettings()
+void EnhancementsWidget::ShaderChanged()
 {
-  if (m_block_save)
-    return;
+  auto shader = ReadSetting(Config::GFX_ENHANCE_POST_SHADER);
 
-  const u32 aa_value = static_cast<u32>(std::abs(m_aa_combo->currentData().toInt()));
-  const bool is_ssaa = m_aa_combo->currentData().toInt() < 0;
+  if (shader == "(off)" || shader == "")
+  {
+    shader = "";
 
-  Config::SetBaseOrCurrent(Config::GFX_MSAA, aa_value);
-  Config::SetBaseOrCurrent(Config::GFX_SSAA, is_ssaa);
+    // Setting a shader to null in a game ini could be confusing, as it won't be bolded. Remove it
+    // instead.
+    if (m_game_layer != nullptr)
+      m_game_layer->DeleteKey(Config::GFX_ENHANCE_POST_SHADER.GetLocation());
+    else
+      Config::SetBaseOrCurrent(Config::GFX_ENHANCE_POST_SHADER, shader);
+  }
 
-  const int texture_filtering_selection = m_texture_filtering_combo->currentData().toInt();
-  switch (texture_filtering_selection)
+  if (shader != "" && m_pp_effect->isEnabled())
   {
-  case TEXTURE_FILTERING_DEFAULT:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 0);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Default);
-    break;
-  case TEXTURE_FILTERING_ANISO_2X:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 1);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Default);
-    break;
-  case TEXTURE_FILTERING_ANISO_4X:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 2);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Default);
-    break;
-  case TEXTURE_FILTERING_ANISO_8X:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 3);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Default);
-    break;
-  case TEXTURE_FILTERING_ANISO_16X:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 4);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Default);
-    break;
-  case TEXTURE_FILTERING_FORCE_NEAREST:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 0);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Nearest);
-    break;
-  case TEXTURE_FILTERING_FORCE_LINEAR:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 0);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Linear);
-    break;
-  case TEXTURE_FILTERING_FORCE_LINEAR_ANISO_2X:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 1);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Linear);
-    break;
-  case TEXTURE_FILTERING_FORCE_LINEAR_ANISO_4X:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 2);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Linear);
-    break;
-  case TEXTURE_FILTERING_FORCE_LINEAR_ANISO_8X:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 3);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Linear);
-    break;
-  case TEXTURE_FILTERING_FORCE_LINEAR_ANISO_16X:
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_MAX_ANISOTROPY, 4);
-    Config::SetBaseOrCurrent(Config::GFX_ENHANCE_FORCE_TEXTURE_FILTERING,
-                             TextureFilteringMode::Linear);
-    break;
+    VideoCommon::PostProcessingConfiguration pp_shader;
+    pp_shader.LoadShader(shader);
+    m_configure_pp_effect->setEnabled(pp_shader.HasOptions());
   }
+  else
+  {
+    m_configure_pp_effect->setEnabled(false);
+  }
+}
 
-  const int output_resampling_selection = m_output_resampling_combo->currentData().toInt();
-  Config::SetBaseOrCurrent(Config::GFX_ENHANCE_OUTPUT_RESAMPLING,
-                           static_cast<OutputResamplingMode>(output_resampling_selection));
+void EnhancementsWidget::OnConfigChanged()
+{
+  // Only used for the GameConfigWidget. Bypasses graphics window signals and backend info due to it
+  // being global.
+  m_texture_filtering_combo->setEnabled(ReadSetting(Config::GFX_HACK_FAST_TEXTURE_SAMPLING));
+  m_arbitrary_mipmap_detection->setEnabled(!ReadSetting(Config::GFX_ENABLE_GPU_TEXTURE_DECODING));
+  UpdateAAOptions();
+
+  // Needs to update after deleting a key for 3d settings.
+  LoadPPShaders();
+}
 
-  const bool anaglyph = g_Config.stereo_mode == StereoMode::Anaglyph;
-  const bool passive = g_Config.stereo_mode == StereoMode::Passive;
-  Config::SetBaseOrCurrent(Config::GFX_ENHANCE_POST_SHADER,
-                           (!anaglyph && !passive && m_pp_effect->currentIndex() == 0) ?
-                               "" :
-                               m_pp_effect->currentText().toStdString());
+void EnhancementsWidget::UpdateAAOptions()
+{
+  const QSignalBlocker blocker_aa(m_aa_combo);
 
-  VideoCommon::PostProcessingConfiguration pp_shader;
-  if (Config::Get(Config::GFX_ENHANCE_POST_SHADER) != "")
+  m_aa_combo->Reset();
+  m_aa_combo->Add(tr("None"), (u32)1, false);
+
+  std::vector<u32> aa_modes = g_Config.backend_info.AAModes;
+  for (const u32 aa_mode : aa_modes)
   {
-    pp_shader.LoadShader(Config::Get(Config::GFX_ENHANCE_POST_SHADER));
-    m_configure_pp_effect->setEnabled(pp_shader.HasOptions());
+    if (aa_mode > 1)
+      m_aa_combo->Add(tr("%1x MSAA").arg(aa_mode), aa_mode, false);
   }
-  else
+
+  if (g_Config.backend_info.bSupportsSSAA)
   {
-    m_configure_pp_effect->setEnabled(false);
+    for (const u32 aa_mode : aa_modes)
+    {
+      if (aa_mode > 1)
+        m_aa_combo->Add(tr("%1x SSAA").arg(aa_mode), aa_mode, true);
+    }
   }
 
-  LoadSettings();
+  m_aa_combo->Refresh();
+
+  // Backend info can't be populated in the local game settings window. Only enable local game AA
+  // edits when the backend info is correct - global and local have the same backend.
+  const bool good_info =
+      m_game_layer == nullptr || !m_game_layer->Exists(Config::MAIN_GFX_BACKEND.GetLocation()) ||
+      Config::Get(Config::MAIN_GFX_BACKEND) == m_game_layer->Get(Config::MAIN_GFX_BACKEND);
+
+  m_aa_combo->setEnabled(m_aa_combo->count() > 1 && good_info);
 }
 
 void EnhancementsWidget::AddDescriptions()
@@ -727,7 +634,7 @@ void EnhancementsWidget::ConfigureColorCorrection()
 
 void EnhancementsWidget::ConfigurePostProcessingShader()
 {
-  const std::string shader = Config::Get(Config::GFX_ENHANCE_POST_SHADER);
+  const std::string shader = ReadSetting(Config::GFX_ENHANCE_POST_SHADER);
   PostProcessingConfigWindow dialog(this, shader);
   SetQWidgetWindowDecorations(&dialog);
   dialog.exec();
diff --git a/Source/Core/DolphinQt/Config/Graphics/EnhancementsWidget.h b/Source/Core/DolphinQt/Config/Graphics/EnhancementsWidget.h
index f7922ee424..b3eeca785b 100644
--- a/Source/Core/DolphinQt/Config/Graphics/EnhancementsWidget.h
+++ b/Source/Core/DolphinQt/Config/Graphics/EnhancementsWidget.h
@@ -9,19 +9,19 @@
 
 class ConfigBool;
 class ConfigChoice;
+class ConfigComplexChoice;
+class ConfigStringChoice;
 class ConfigSlider;
 class GameConfigWidget;
 class GraphicsWindow;
-class QCheckBox;
-class QComboBox;
 class QPushButton;
-class QSlider;
-class ToolTipComboBox;
 class ToolTipPushButton;
 enum class StereoMode : int;
 
 namespace Config
 {
+template <typename T>
+class Info;
 class Layer;
 }  // namespace Config
 
@@ -33,22 +33,28 @@ public:
   EnhancementsWidget(GameConfigWidget* parent, Config::Layer* layer);
 
 private:
-  void LoadSettings();
-  void SaveSettings();
+  template <typename T>
+  T ReadSetting(const Config::Info<T>& setting) const;
 
   void CreateWidgets();
   void ConnectWidgets();
   void AddDescriptions();
+
+  void OnBackendChanged();
+  void UpdateAAOptions();
+  void LoadPPShaders();
+  void ShaderChanged();
+  void OnConfigChanged();
+
   void ConfigureColorCorrection();
   void ConfigurePostProcessingShader();
-  void LoadPPShaders(StereoMode stereo_mode);
 
   // Enhancements
   ConfigChoice* m_ir_combo;
-  ToolTipComboBox* m_aa_combo;
-  ToolTipComboBox* m_texture_filtering_combo;
-  ToolTipComboBox* m_output_resampling_combo;
-  ToolTipComboBox* m_pp_effect;
+  ConfigComplexChoice* m_aa_combo;
+  ConfigComplexChoice* m_texture_filtering_combo;
+  ConfigChoice* m_output_resampling_combo;
+  ConfigStringChoice* m_pp_effect;
   ToolTipPushButton* m_configure_color_correction;
   QPushButton* m_configure_pp_effect;
   ConfigBool* m_scaled_efb_copy;
@@ -68,6 +74,4 @@ private:
   ConfigBool* m_3d_per_eye_resolution;
 
   Config::Layer* m_game_layer = nullptr;
-  int m_msaa_modes;
-  bool m_block_save;
 };