diff --git a/Source/Core/VideoBackends/Vulkan/Renderer.cpp b/Source/Core/VideoBackends/Vulkan/Renderer.cpp
@@ -624,7 +624,8 @@ void Renderer::BlitScreen(VkRenderPass render_pass, const TargetRectangle& dst_r
                           const TargetRectangle& src_rect, const Texture2D* src_tex)
 {
   VulkanPostProcessing* post_processor = static_cast<VulkanPostProcessing*>(m_post_processor.get());
-  if (g_ActiveConfig.iStereoMode == STEREO_SBS || g_ActiveConfig.iStereoMode == STEREO_TAB)
+  if (g_ActiveConfig.stereo_mode == StereoMode::SBS ||
+      g_ActiveConfig.stereo_mode == StereoMode::TAB)
   {
     TargetRectangle left_rect;
     TargetRectangle right_rect;
@@ -633,7 +634,7 @@ void Renderer::BlitScreen(VkRenderPass render_pass, const TargetRectangle& dst_r
     post_processor->BlitFromTexture(left_rect, src_rect, src_tex, 0, render_pass);
     post_processor->BlitFromTexture(right_rect, src_rect, src_tex, 1, render_pass);
   }
-  else if (g_ActiveConfig.iStereoMode == STEREO_QUADBUFFER)
+  else if (g_ActiveConfig.stereo_mode == StereoMode::QuadBuffer)
   {
     post_processor->BlitFromTexture(dst_rect, src_rect, src_tex, -1, render_pass);
   }
@@ -712,21 +713,22 @@ void Renderer::CheckForSurfaceChange()
 void Renderer::CheckForConfigChanges()
 {
   // Save the video config so we can compare against to determine which settings have changed.
-  int old_anisotropy = g_ActiveConfig.iMaxAnisotropy;
-  int old_aspect_ratio = g_ActiveConfig.iAspectRatio;
-  int old_efb_scale = g_ActiveConfig.iEFBScale;
-  bool old_force_filtering = g_ActiveConfig.bForceFiltering;
+  const int old_anisotropy = g_ActiveConfig.iMaxAnisotropy;
+  const AspectMode old_aspect_mode = g_ActiveConfig.aspect_mode;
+  const int old_efb_scale = g_ActiveConfig.iEFBScale;
+  const bool old_force_filtering = g_ActiveConfig.bForceFiltering;
 
   // Copy g_Config to g_ActiveConfig.
   // NOTE: This can potentially race with the UI thread, however if it does, the changes will be
   // delayed until the next time CheckForConfigChanges is called.
   UpdateActiveConfig();
 
   // Determine which (if any) settings have changed.
-  bool anisotropy_changed = old_anisotropy != g_ActiveConfig.iMaxAnisotropy;
-  bool force_texture_filtering_changed = old_force_filtering != g_ActiveConfig.bForceFiltering;
-  bool efb_scale_changed = old_efb_scale != g_ActiveConfig.iEFBScale;
-  bool aspect_changed = old_aspect_ratio != g_ActiveConfig.iAspectRatio;
+  const bool anisotropy_changed = old_anisotropy != g_ActiveConfig.iMaxAnisotropy;
+  const bool force_texture_filtering_changed =
+      old_force_filtering != g_ActiveConfig.bForceFiltering;
+  const bool efb_scale_changed = old_efb_scale != g_ActiveConfig.iEFBScale;
+  const bool aspect_changed = old_aspect_mode != g_ActiveConfig.aspect_mode;
 
   // Update texture cache settings with any changed options.
   TextureCache::GetInstance()->OnConfigChanged(g_ActiveConfig);
@@ -765,7 +767,7 @@ void Renderer::CheckForConfigChanges()
 
   // For quad-buffered stereo we need to change the layer count, so recreate the swap chain.
   if (m_swap_chain &&
-      (g_ActiveConfig.iStereoMode == STEREO_QUADBUFFER) != m_swap_chain->IsStereoEnabled())
+      (g_ActiveConfig.stereo_mode == StereoMode::QuadBuffer) != m_swap_chain->IsStereoEnabled())
   {
     g_command_buffer_mgr->WaitForGPUIdle();
     m_swap_chain->RecreateSwapChain();

diff --git a/Source/Core/VideoBackends/Vulkan/ShaderCache.cpp b/Source/Core/VideoBackends/Vulkan/ShaderCache.cpp
@@ -971,7 +971,7 @@ std::string ShaderCache::GetUtilityShaderHeader() const
       ss << "#define SSAA_ENABLED 1" << std::endl;
   }
 
-  u32 efb_layers = (g_ActiveConfig.iStereoMode != STEREO_OFF) ? 2 : 1;
+  u32 efb_layers = (g_ActiveConfig.stereo_mode != StereoMode::Off) ? 2 : 1;
   ss << "#define EFB_LAYERS " << efb_layers << std::endl;
 
   return ss.str();
@@ -1126,7 +1126,7 @@ bool ShaderCache::CompileSharedShaders()
     return false;
   }
 
-  if (g_ActiveConfig.iStereoMode != STEREO_OFF && g_vulkan_context->SupportsGeometryShaders())
+  if (g_ActiveConfig.stereo_mode != StereoMode::Off && g_vulkan_context->SupportsGeometryShaders())
   {
     m_screen_quad_geometry_shader =
         Util::CompileAndCreateGeometryShader(header + SCREEN_QUAD_GEOMETRY_SHADER_SOURCE);

diff --git a/Source/Core/VideoBackends/Vulkan/SwapChain.cpp b/Source/Core/VideoBackends/Vulkan/SwapChain.cpp
@@ -321,7 +321,7 @@ bool SwapChain::CreateSwapChain()
   }
 
   // Select the number of image layers for Quad-Buffered stereoscopy
-  uint32_t image_layers = g_ActiveConfig.iStereoMode == STEREO_QUADBUFFER ? 2 : 1;
+  uint32_t image_layers = g_ActiveConfig.stereo_mode == StereoMode::QuadBuffer ? 2 : 1;
 
   // Store the old/current swap chain when recreating for resize
   VkSwapchainKHR old_swap_chain = m_swap_chain;

diff --git a/Source/Core/VideoCommon/GeometryShaderGen.cpp b/Source/Core/VideoCommon/GeometryShaderGen.cpp
@@ -20,7 +20,7 @@ constexpr std::array<const char*, 4> primitives_d3d = {{"point", "line", "triang
 
 bool geometry_shader_uid_data::IsPassthrough() const
 {
-  const bool stereo = g_ActiveConfig.iStereoMode > 0;
+  const bool stereo = g_ActiveConfig.stereo_mode != StereoMode::Off;
   const bool wireframe = g_ActiveConfig.bWireFrame;
   return primitive_type >= static_cast<u32>(PrimitiveType::Triangles) && !stereo && !wireframe;
 }

diff --git a/Source/Core/VideoCommon/GeometryShaderManager.cpp b/Source/Core/VideoCommon/GeometryShaderManager.cpp
@@ -41,7 +41,7 @@ void GeometryShaderManager::Dirty()
 
 void GeometryShaderManager::SetConstants()
 {
-  if (s_projection_changed && g_ActiveConfig.iStereoMode > 0)
+  if (s_projection_changed && g_ActiveConfig.stereo_mode != StereoMode::Off)
   {
     s_projection_changed = false;
 

diff --git a/Source/Core/VideoCommon/PostProcessing.cpp b/Source/Core/VideoCommon/PostProcessing.cpp
@@ -70,7 +70,8 @@ std::string PostProcessingShaderConfiguration::LoadShader(std::string shader)
     shader = g_ActiveConfig.sPostProcessingShader;
   m_current_shader = shader;
 
-  const std::string sub_dir = (g_Config.iStereoMode == STEREO_ANAGLYPH) ? ANAGLYPH_DIR DIR_SEP : "";
+  const std::string sub_dir =
+      (g_Config.stereo_mode == StereoMode::Anaglyph) ? ANAGLYPH_DIR DIR_SEP : "";
 
   // loading shader code
   std::string code;

diff --git a/Source/Core/VideoCommon/RenderBase.cpp b/Source/Core/VideoCommon/RenderBase.cpp
@@ -185,7 +185,7 @@ Renderer::ConvertStereoRectangle(const TargetRectangle& rc) const
 {
   // Resize target to half its original size
   TargetRectangle draw_rc = rc;
-  if (g_ActiveConfig.iStereoMode == STEREO_TAB)
+  if (g_ActiveConfig.stereo_mode == StereoMode::TAB)
   {
     // The height may be negative due to flipped rectangles
     int height = rc.bottom - rc.top;
@@ -202,7 +202,7 @@ Renderer::ConvertStereoRectangle(const TargetRectangle& rc) const
   // Create two target rectangle offset to the sides of the backbuffer
   TargetRectangle left_rc = draw_rc;
   TargetRectangle right_rc = draw_rc;
-  if (g_ActiveConfig.iStereoMode == STEREO_TAB)
+  if (g_ActiveConfig.stereo_mode == StereoMode::TAB)
   {
     left_rc.top -= m_backbuffer_height / 4;
     left_rc.bottom -= m_backbuffer_height / 4;
@@ -312,19 +312,20 @@ void Renderer::DrawDebugText()
       break;
     }
     const char* ar_text = "";
-    switch (g_ActiveConfig.iAspectRatio)
+    switch (g_ActiveConfig.aspect_mode)
     {
-    case ASPECT_AUTO:
+    case AspectMode::Auto:
       ar_text = "Auto";
       break;
-    case ASPECT_STRETCH:
+    case AspectMode::Stretch:
       ar_text = "Stretch";
       break;
-    case ASPECT_ANALOG:
+    case AspectMode::Analog:
       ar_text = "Force 4:3";
       break;
-    case ASPECT_ANALOG_WIDE:
+    case AspectMode::AnalogWide:
       ar_text = "Force 16:9";
+      break;
     }
 
     const char* const efbcopy_text = g_ActiveConfig.bSkipEFBCopyToRam ? "to Texture" : "to RAM";
@@ -381,15 +382,15 @@ void Renderer::DrawDebugText()
 
 float Renderer::CalculateDrawAspectRatio() const
 {
-  if (g_ActiveConfig.iAspectRatio == ASPECT_STRETCH)
+  if (g_ActiveConfig.aspect_mode == AspectMode::Stretch)
   {
     // If stretch is enabled, we prefer the aspect ratio of the window.
     return (static_cast<float>(m_backbuffer_width) / static_cast<float>(m_backbuffer_height));
   }
 
   // The rendering window aspect ratio as a proportion of the 4:3 or 16:9 ratio
-  if (g_ActiveConfig.iAspectRatio == ASPECT_ANALOG_WIDE ||
-      (g_ActiveConfig.iAspectRatio != ASPECT_ANALOG && m_aspect_wide))
+  if (g_ActiveConfig.aspect_mode == AspectMode::AnalogWide ||
+      (g_ActiveConfig.aspect_mode != AspectMode::Analog && m_aspect_wide))
   {
     return AspectToWidescreen(VideoInterface::GetAspectRatio());
   }
@@ -428,21 +429,20 @@ void Renderer::UpdateDrawRectangle()
     float source_aspect = VideoInterface::GetAspectRatio();
     if (m_aspect_wide)
       source_aspect = AspectToWidescreen(source_aspect);
-    float target_aspect;
+    float target_aspect = 0.0f;
 
-    switch (g_ActiveConfig.iAspectRatio)
+    switch (g_ActiveConfig.aspect_mode)
     {
-    case ASPECT_STRETCH:
+    case AspectMode::Stretch:
       target_aspect = win_width / win_height;
       break;
-    case ASPECT_ANALOG:
+    case AspectMode::Analog:
       target_aspect = VideoInterface::GetAspectRatio();
       break;
-    case ASPECT_ANALOG_WIDE:
+    case AspectMode::AnalogWide:
       target_aspect = AspectToWidescreen(VideoInterface::GetAspectRatio());
       break;
-    default:
-      // ASPECT_AUTO
+    case AspectMode::Auto:
       target_aspect = source_aspect;
       break;
     }
@@ -475,10 +475,10 @@ void Renderer::UpdateDrawRectangle()
   draw_height = crop_height = 1;
 
   // crop the picture to a standard aspect ratio
-  if (g_ActiveConfig.bCrop && g_ActiveConfig.iAspectRatio != ASPECT_STRETCH)
+  if (g_ActiveConfig.bCrop && g_ActiveConfig.aspect_mode != AspectMode::Stretch)
   {
-    float expected_aspect = (g_ActiveConfig.iAspectRatio == ASPECT_ANALOG_WIDE ||
-                             (g_ActiveConfig.iAspectRatio != ASPECT_ANALOG && m_aspect_wide)) ?
+    float expected_aspect = (g_ActiveConfig.aspect_mode == AspectMode::AnalogWide ||
+                             (g_ActiveConfig.aspect_mode != AspectMode::Analog && m_aspect_wide)) ?
                                 (16.0f / 9.0f) :
                                 (4.0f / 3.0f);
     if (crop_width / crop_height >= expected_aspect)
@@ -550,8 +550,8 @@ std::tuple<int, int> Renderer::CalculateOutputDimensions(int width, int height)
   {
     // Force 4:3 or 16:9 by cropping the image.
     float current_aspect = scaled_width / scaled_height;
-    float expected_aspect = (g_ActiveConfig.iAspectRatio == ASPECT_ANALOG_WIDE ||
-                             (g_ActiveConfig.iAspectRatio != ASPECT_ANALOG && m_aspect_wide)) ?
+    float expected_aspect = (g_ActiveConfig.aspect_mode == AspectMode::AnalogWide ||
+                             (g_ActiveConfig.aspect_mode != AspectMode::Analog && m_aspect_wide)) ?
                                 (16.0f / 9.0f) :
                                 (4.0f / 3.0f);
     if (current_aspect > expected_aspect)

diff --git a/Source/Core/VideoCommon/ShaderGenCommon.cpp b/Source/Core/VideoCommon/ShaderGenCommon.cpp
@@ -13,7 +13,7 @@ ShaderHostConfig ShaderHostConfig::GetCurrent()
   bits.msaa = g_ActiveConfig.iMultisamples > 1;
   bits.ssaa = g_ActiveConfig.iMultisamples > 1 && g_ActiveConfig.bSSAA &&
               g_ActiveConfig.backend_info.bSupportsSSAA;
-  bits.stereo = g_ActiveConfig.iStereoMode > 0;
+  bits.stereo = g_ActiveConfig.stereo_mode != StereoMode::Off;
   bits.wireframe = g_ActiveConfig.bWireFrame;
   bits.per_pixel_lighting = g_ActiveConfig.bEnablePixelLighting;
   bits.vertex_rounding = g_ActiveConfig.UseVertexRounding();

diff --git a/Source/Core/VideoCommon/TextureCacheBase.cpp b/Source/Core/VideoCommon/TextureCacheBase.cpp
@@ -130,7 +130,7 @@ void TextureCacheBase::OnConfigChanged(VideoConfig& config)
                                        g_ActiveConfig.bTexFmtOverlayCenter);
   }
 
-  if ((config.iStereoMode > 0) != backup_config.stereo_3d ||
+  if ((config.stereo_mode != StereoMode::Off) != backup_config.stereo_3d ||
       config.bStereoEFBMonoDepth != backup_config.efb_mono_depth)
   {
     g_texture_cache->DeleteShaders();
@@ -222,7 +222,7 @@ void TextureCacheBase::SetBackupConfig(const VideoConfig& config)
   backup_config.texfmt_overlay_center = config.bTexFmtOverlayCenter;
   backup_config.hires_textures = config.bHiresTextures;
   backup_config.cache_hires_textures = config.bCacheHiresTextures;
-  backup_config.stereo_3d = config.iStereoMode > 0;
+  backup_config.stereo_3d = config.stereo_mode != StereoMode::Off;
   backup_config.efb_mono_depth = config.bStereoEFBMonoDepth;
   backup_config.gpu_texture_decoding = config.bEnableGPUTextureDecoding;
 }

diff --git a/Source/Core/VideoCommon/VideoConfig.cpp b/Source/Core/VideoCommon/VideoConfig.cpp
@@ -61,11 +61,11 @@ void VideoConfig::Refresh()
   iAdapter = Config::Get(Config::GFX_ADAPTER);
 
   bWidescreenHack = Config::Get(Config::GFX_WIDESCREEN_HACK);
-  const int aspect_ratio = Config::Get(Config::GFX_ASPECT_RATIO);
-  if (aspect_ratio == ASPECT_AUTO)
-    iAspectRatio = Config::Get(Config::GFX_SUGGESTED_ASPECT_RATIO);
+  const auto config_aspect_mode = static_cast<AspectMode>(Config::Get(Config::GFX_ASPECT_RATIO));
+  if (config_aspect_mode == AspectMode::Auto)
+    aspect_mode = static_cast<AspectMode>(Config::Get(Config::GFX_SUGGESTED_ASPECT_RATIO));
   else
-    iAspectRatio = aspect_ratio;
+    aspect_mode = config_aspect_mode;
   bCrop = Config::Get(Config::GFX_CROP);
   iSafeTextureCache_ColorSamples = Config::Get(Config::GFX_SAFE_TEXTURE_CACHE_COLOR_SAMPLES);
   bShowFPS = Config::Get(Config::GFX_SHOW_FPS);
@@ -122,7 +122,7 @@ void VideoConfig::Refresh()
   sPostProcessingShader = Config::Get(Config::GFX_ENHANCE_POST_SHADER);
   bForceTrueColor = Config::Get(Config::GFX_ENHANCE_FORCE_TRUE_COLOR);
 
-  iStereoMode = Config::Get(Config::GFX_STEREO_MODE);
+  stereo_mode = static_cast<StereoMode>(Config::Get(Config::GFX_STEREO_MODE));
   iStereoDepth = Config::Get(Config::GFX_STEREO_DEPTH);
   iStereoConvergencePercentage = Config::Get(Config::GFX_STEREO_CONVERGENCE_PERCENTAGE);
   bStereoSwapEyes = Config::Get(Config::GFX_STEREO_SWAP_EYES);
@@ -162,14 +162,14 @@ void VideoConfig::VerifyValidity()
       backend_info.AAModes.end())
     iMultisamples = 1;
 
-  if (iStereoMode > 0)
+  if (stereo_mode != StereoMode::Off)
   {
     if (!backend_info.bSupportsGeometryShaders)
     {
       OSD::AddMessage(
           "Stereoscopic 3D isn't supported by your GPU, support for OpenGL 3.2 is required.",
           10000);
-      iStereoMode = 0;
+      stereo_mode = StereoMode::Off;
     }
   }
 }

diff --git a/Source/Core/VideoCommon/VideoConfig.h b/Source/Core/VideoCommon/VideoConfig.h
@@ -24,22 +24,22 @@
 
 constexpr int EFB_SCALE_AUTO_INTEGRAL = 0;
 
-enum AspectMode
+enum class AspectMode
 {
-  ASPECT_AUTO = 0,
-  ASPECT_ANALOG_WIDE = 1,
-  ASPECT_ANALOG = 2,
-  ASPECT_STRETCH = 3,
+  Auto,
+  AnalogWide,
+  Analog,
+  Stretch,
 };
 
-enum StereoMode
+enum class StereoMode
 {
-  STEREO_OFF = 0,
-  STEREO_SBS,
-  STEREO_TAB,
-  STEREO_ANAGLYPH,
-  STEREO_QUADBUFFER,
-  STEREO_3DVISION
+  Off,
+  SBS,
+  TAB,
+  Anaglyph,
+  QuadBuffer,
+  Nvidia3DVision
 };
 
 struct ProjectionHackConfig final
@@ -63,7 +63,7 @@ struct VideoConfig final
   // General
   bool bVSync;
   bool bWidescreenHack;
-  int iAspectRatio;
+  AspectMode aspect_mode;
   bool bCrop;  // Aspect ratio controls.
   bool bShaderCache;
 
@@ -130,7 +130,7 @@ struct VideoConfig final
   int iSaveTargetId;  // TODO: Should be dropped
 
   // Stereoscopy
-  int iStereoMode;
+  StereoMode stereo_mode;
   int iStereoDepth;
   int iStereoConvergence;
   int iStereoConvergencePercentage;