diff --git a/src/frontend-common/d3d11_host_display.h b/src/frontend-common/d3d11_host_display.h
index 9d64361f4..2d2777eb3 100644
--- a/src/frontend-common/d3d11_host_display.h
+++ b/src/frontend-common/d3d11_host_display.h
@@ -16,7 +16,7 @@
 
 namespace FrontendCommon {
 
-class D3D11HostDisplay : public HostDisplay
+class D3D11HostDisplay final : public HostDisplay
 {
 public:
   template<typename T>
@@ -25,31 +25,31 @@ public:
   D3D11HostDisplay();
   ~D3D11HostDisplay();
 
-  virtual RenderAPI GetRenderAPI() const override;
-  virtual void* GetRenderDevice() const override;
-  virtual void* GetRenderContext() const override;
+  RenderAPI GetRenderAPI() const override;
+  void* GetRenderDevice() const override;
+  void* GetRenderContext() const override;
 
-  virtual bool HasRenderDevice() const override;
-  virtual bool HasRenderSurface() const override;
+  bool HasRenderDevice() const override;
+  bool HasRenderSurface() const override;
 
-  virtual bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device,
-                                  bool threaded_presentation) override;
-  virtual bool InitializeRenderDevice(std::string_view shader_cache_directory, bool debug_device,
-                                      bool threaded_presentation) override;
-  virtual void DestroyRenderDevice() override;
+  bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device,
+                          bool threaded_presentation) override;
+  bool InitializeRenderDevice(std::string_view shader_cache_directory, bool debug_device,
+                              bool threaded_presentation) override;
+  void DestroyRenderDevice() override;
 
-  virtual bool MakeRenderContextCurrent() override;
-  virtual bool DoneRenderContextCurrent() override;
+  bool MakeRenderContextCurrent() override;
+  bool DoneRenderContextCurrent() override;
 
-  virtual bool ChangeRenderWindow(const WindowInfo& new_wi) override;
-  virtual void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
-  virtual bool SupportsFullscreen() const override;
-  virtual bool IsFullscreen() override;
-  virtual bool SetFullscreen(bool fullscreen, u32 width, u32 height, float refresh_rate) override;
-  virtual AdapterAndModeList GetAdapterAndModeList() override;
-  virtual void DestroyRenderSurface() override;
+  bool ChangeRenderWindow(const WindowInfo& new_wi) override;
+  void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
+  bool SupportsFullscreen() const override;
+  bool IsFullscreen() override;
+  bool SetFullscreen(bool fullscreen, u32 width, u32 height, float refresh_rate) override;
+  AdapterAndModeList GetAdapterAndModeList() override;
+  void DestroyRenderSurface() override;
 
-  virtual bool SetPostProcessingChain(const std::string_view& config) override;
+  bool SetPostProcessingChain(const std::string_view& config) override;
 
   std::unique_ptr<HostDisplayTexture> CreateTexture(u32 width, u32 height, u32 layers, u32 levels, u32 samples,
                                                     HostDisplayPixelFormat format, const void* data, u32 data_stride,
@@ -65,11 +65,11 @@ public:
 
   bool GetHostRefreshRate(float* refresh_rate) override;
 
-  virtual void SetVSync(bool enabled) override;
+  void SetVSync(bool enabled) override;
 
-  virtual bool Render() override;
-  virtual bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
-                                HostDisplayPixelFormat* out_format) override;
+  bool Render() override;
+  bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
+                        HostDisplayPixelFormat* out_format) override;
 
   static AdapterAndModeList StaticGetAdapterAndModeList();
 
@@ -78,12 +78,12 @@ protected:
 
   static AdapterAndModeList GetAdapterAndModeList(IDXGIFactory* dxgi_factory);
 
-  virtual bool CreateResources() override;
-  virtual void DestroyResources() override;
+  bool CreateResources() override;
+  void DestroyResources() override;
 
-  virtual bool CreateImGuiContext() override;
-  virtual void DestroyImGuiContext() override;
-  virtual bool UpdateImGuiFontTexture() override;
+  bool CreateImGuiContext() override;
+  void DestroyImGuiContext() override;
+  bool UpdateImGuiFontTexture() override;
 
   bool CreateSwapChain(const DXGI_MODE_DESC* fullscreen_mode);
   bool CreateSwapChainRTV();
@@ -108,8 +108,8 @@ protected:
   bool CheckPostProcessingRenderTargets(u32 target_width, u32 target_height);
   void ApplyPostProcessingChain(ID3D11RenderTargetView* final_target, s32 final_left, s32 final_top, s32 final_width,
                                 s32 final_height, void* texture_handle, u32 texture_width, s32 texture_height,
-                                s32 texture_view_x, s32 texture_view_y, s32 texture_view_width,
-                                s32 texture_view_height, u32 target_width, u32 target_height);
+                                s32 texture_view_x, s32 texture_view_y, s32 texture_view_width, s32 texture_view_height,
+                                u32 target_width, u32 target_height);
 
   ComPtr<ID3D11Device> m_device;
   ComPtr<ID3D11DeviceContext> m_context;
diff --git a/src/frontend-common/opengl_host_display.h b/src/frontend-common/opengl_host_display.h
index f95e18523..23e8d7009 100644
--- a/src/frontend-common/opengl_host_display.h
+++ b/src/frontend-common/opengl_host_display.h
@@ -19,37 +19,37 @@
 
 namespace FrontendCommon {
 
-class OpenGLHostDisplay : public HostDisplay
+class OpenGLHostDisplay final : public HostDisplay
 {
 public:
   OpenGLHostDisplay();
-  virtual ~OpenGLHostDisplay();
+  ~OpenGLHostDisplay();
 
-  virtual RenderAPI GetRenderAPI() const override;
-  virtual void* GetRenderDevice() const override;
-  virtual void* GetRenderContext() const override;
+  RenderAPI GetRenderAPI() const override;
+  void* GetRenderDevice() const override;
+  void* GetRenderContext() const override;
 
-  virtual bool HasRenderDevice() const override;
-  virtual bool HasRenderSurface() const override;
+  bool HasRenderDevice() const override;
+  bool HasRenderSurface() const override;
 
-  virtual bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device,
-                                  bool threaded_presentation) override;
-  virtual bool InitializeRenderDevice(std::string_view shader_cache_directory, bool debug_device,
-                                      bool threaded_presentation) override;
-  virtual void DestroyRenderDevice() override;
+  bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device,
+                          bool threaded_presentation) override;
+  bool InitializeRenderDevice(std::string_view shader_cache_directory, bool debug_device,
+                              bool threaded_presentation) override;
+  void DestroyRenderDevice() override;
 
-  virtual bool MakeRenderContextCurrent() override;
-  virtual bool DoneRenderContextCurrent() override;
+  bool MakeRenderContextCurrent() override;
+  bool DoneRenderContextCurrent() override;
 
-  virtual bool ChangeRenderWindow(const WindowInfo& new_wi) override;
-  virtual void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
-  virtual bool SupportsFullscreen() const override;
-  virtual bool IsFullscreen() override;
-  virtual bool SetFullscreen(bool fullscreen, u32 width, u32 height, float refresh_rate) override;
-  virtual AdapterAndModeList GetAdapterAndModeList() override;
-  virtual void DestroyRenderSurface() override;
+  bool ChangeRenderWindow(const WindowInfo& new_wi) override;
+  void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
+  bool SupportsFullscreen() const override;
+  bool IsFullscreen() override;
+  bool SetFullscreen(bool fullscreen, u32 width, u32 height, float refresh_rate) override;
+  AdapterAndModeList GetAdapterAndModeList() override;
+  void DestroyRenderSurface() override;
 
-  virtual bool SetPostProcessingChain(const std::string_view& config) override;
+  bool SetPostProcessingChain(const std::string_view& config) override;
 
   std::unique_ptr<HostDisplayTexture> CreateTexture(u32 width, u32 height, u32 layers, u32 levels, u32 samples,
                                                     HostDisplayPixelFormat format, const void* data, u32 data_stride,
@@ -64,22 +64,22 @@ public:
   void EndSetDisplayPixels() override;
   bool SetDisplayPixels(HostDisplayPixelFormat format, u32 width, u32 height, const void* buffer, u32 pitch) override;
 
-  virtual void SetVSync(bool enabled) override;
+  void SetVSync(bool enabled) override;
 
-  virtual bool Render() override;
-  virtual bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
-                                HostDisplayPixelFormat* out_format) override;
+  bool Render() override;
+  bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
+                        HostDisplayPixelFormat* out_format) override;
 
 protected:
   const char* GetGLSLVersionString() const;
   std::string GetGLSLVersionHeader() const;
 
-  virtual bool CreateResources() override;
-  virtual void DestroyResources() override;
+  bool CreateResources() override;
+  void DestroyResources() override;
 
-  virtual bool CreateImGuiContext() override;
-  virtual void DestroyImGuiContext() override;
-  virtual bool UpdateImGuiFontTexture() override;
+  bool CreateImGuiContext() override;
+  void DestroyImGuiContext() override;
+  bool UpdateImGuiFontTexture() override;
 
   void BindDisplayPixelsTexture();
   void UpdateDisplayPixelsTextureFilter();
diff --git a/src/frontend-common/vulkan_host_display.h b/src/frontend-common/vulkan_host_display.h
index c394bf05e..9edd12b11 100644
--- a/src/frontend-common/vulkan_host_display.h
+++ b/src/frontend-common/vulkan_host_display.h
@@ -16,37 +16,37 @@ class SwapChain;
 
 namespace FrontendCommon {
 
-class VulkanHostDisplay : public HostDisplay
+class VulkanHostDisplay final : public HostDisplay
 {
 public:
   VulkanHostDisplay();
-  virtual ~VulkanHostDisplay();
+  ~VulkanHostDisplay();
 
-  virtual RenderAPI GetRenderAPI() const override;
-  virtual void* GetRenderDevice() const override;
-  virtual void* GetRenderContext() const override;
+  RenderAPI GetRenderAPI() const override;
+  void* GetRenderDevice() const override;
+  void* GetRenderContext() const override;
 
-  virtual bool HasRenderDevice() const override;
-  virtual bool HasRenderSurface() const override;
+  bool HasRenderDevice() const override;
+  bool HasRenderSurface() const override;
 
-  virtual bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device,
+  bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device,
                                   bool threaded_presentation) override;
-  virtual bool InitializeRenderDevice(std::string_view shader_cache_directory, bool debug_device,
+  bool InitializeRenderDevice(std::string_view shader_cache_directory, bool debug_device,
                                       bool threaded_presentation) override;
-  virtual void DestroyRenderDevice() override;
+  void DestroyRenderDevice() override;
 
-  virtual bool MakeRenderContextCurrent() override;
-  virtual bool DoneRenderContextCurrent() override;
+  bool MakeRenderContextCurrent() override;
+  bool DoneRenderContextCurrent() override;
 
-  virtual bool ChangeRenderWindow(const WindowInfo& new_wi) override;
-  virtual void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
-  virtual bool SupportsFullscreen() const override;
-  virtual bool IsFullscreen() override;
-  virtual bool SetFullscreen(bool fullscreen, u32 width, u32 height, float refresh_rate) override;
-  virtual AdapterAndModeList GetAdapterAndModeList() override;
-  virtual void DestroyRenderSurface() override;
+  bool ChangeRenderWindow(const WindowInfo& new_wi) override;
+  void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
+  bool SupportsFullscreen() const override;
+  bool IsFullscreen() override;
+  bool SetFullscreen(bool fullscreen, u32 width, u32 height, float refresh_rate) override;
+  AdapterAndModeList GetAdapterAndModeList() override;
+  void DestroyRenderSurface() override;
 
-  virtual bool SetPostProcessingChain(const std::string_view& config) override;
+  bool SetPostProcessingChain(const std::string_view& config) override;
 
   std::unique_ptr<HostDisplayTexture> CreateTexture(u32 width, u32 height, u32 layers, u32 levels, u32 samples,
                                                     HostDisplayPixelFormat format, const void* data, u32 data_stride,
@@ -61,10 +61,10 @@ public:
                              u32* out_pitch) override;
   void EndSetDisplayPixels() override;
 
-  virtual void SetVSync(bool enabled) override;
+  void SetVSync(bool enabled) override;
 
-  virtual bool Render() override;
-  virtual bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
+  bool Render() override;
+  bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
                                 HostDisplayPixelFormat* out_format) override;
 
   static AdapterAndModeList StaticGetAdapterAndModeList(const WindowInfo* wi);
@@ -97,14 +97,14 @@ protected:
                                 u32 target_width, u32 target_height);
 
   // Can be overridden by frontends.
-  virtual VkRenderPass GetRenderPassForDisplay() const;
+  VkRenderPass GetRenderPassForDisplay() const;
 
-  virtual bool CreateResources() override;
-  virtual void DestroyResources() override;
+  bool CreateResources() override;
+  void DestroyResources() override;
 
-  virtual bool CreateImGuiContext() override;
-  virtual void DestroyImGuiContext() override;
-  virtual bool UpdateImGuiFontTexture() override;
+  bool CreateImGuiContext() override;
+  void DestroyImGuiContext() override;
+  bool UpdateImGuiFontTexture() override;
 
   void BeginSwapChainRenderPass(VkFramebuffer framebuffer, u32 width, u32 height);
   void RenderDisplay();