HostInterface: Move ModifyResolutionScale() to base class

src/core/host_interface.cpp

@@ -559,6 +559,23 @@ void HostInterface::ToggleSoftwareRendering()
   m_system->RecreateGPU(new_renderer);
 }
 
+void HostInterface::ModifyResolutionScale(s32 increment)
+{
+  const u32 new_resolution_scale =
+    std::clamp<u32>(static_cast<u32>(static_cast<s32>(m_settings.gpu_resolution_scale) + increment), 1,
+                    m_settings.max_gpu_resolution_scale);
+  if (new_resolution_scale == m_settings.gpu_resolution_scale)
+    return;
+
+  m_settings.gpu_resolution_scale = new_resolution_scale;
+  if (m_system)
+    m_system->GetGPU()->UpdateSettings();
+
+  AddFormattedOSDMessage(2.0f, "Resolution scale set to %ux (%ux%u)", m_settings.gpu_resolution_scale,
+                         GPU::VRAM_WIDTH * m_settings.gpu_resolution_scale,
+                         GPU::VRAM_HEIGHT * m_settings.gpu_resolution_scale);
+}
+
 void HostInterface::RunFrame()
 {
   m_frame_timer.Reset();

src/core/host_interface.h

@@ -111,6 +111,9 @@ protected:
   /// Quick switch between software and hardware rendering.
   void ToggleSoftwareRendering();
 
+  /// Adjusts the internal (render) resolution of the hardware backends.
+  void ModifyResolutionScale(s32 increment);
+
   void RunFrame();
 
   /// Throttles the system, i.e. sleeps until it's time to execute the next frame.

src/duckstation/sdl_host_interface.cpp

@@ -426,9 +426,7 @@ void SDLHostInterface::HandleSDLKeyEvent(const SDL_Event* event)
     case SDL_SCANCODE_PAGEUP:
     case SDL_SCANCODE_PAGEDOWN: {
       if (pressed)
-      {
-        DoModifyInternalResolution(event->key.keysym.scancode == SDL_SCANCODE_PAGEUP ? 1 : -1);
-      }
+        ModifyResolutionScale(event->key.keysym.scancode == SDL_SCANCODE_PAGEUP ? 1 : -1);
     }
     break;
   }
@@ -1555,23 +1553,6 @@ void SDLHostInterface::DoToggleFullscreen()
   UpdateFullscreen();
 }
 
-void SDLHostInterface::DoModifyInternalResolution(s32 increment)
-{
-  const u32 new_resolution_scale =
-    std::clamp<u32>(static_cast<u32>(static_cast<s32>(m_settings.gpu_resolution_scale) + increment), 1,
-                    m_settings.max_gpu_resolution_scale);
-  if (new_resolution_scale == m_settings.gpu_resolution_scale)
-    return;
-
-  m_settings.gpu_resolution_scale = new_resolution_scale;
-  if (m_system)
-    m_system->GetGPU()->UpdateSettings();
-
-  AddFormattedOSDMessage(2.0f, "Resolution scale set to %ux (%ux%u)", m_settings.gpu_resolution_scale,
-                         GPU::VRAM_WIDTH * m_settings.gpu_resolution_scale,
-                         GPU::VRAM_HEIGHT * m_settings.gpu_resolution_scale);
-}
-
 void SDLHostInterface::Run()
 {
   m_audio_stream->PauseOutput(false);

src/duckstation/sdl_host_interface.h

@@ -100,7 +100,6 @@ private:
   void DoTogglePause();
   void DoFrameStep();
   void DoToggleFullscreen();
-  void DoModifyInternalResolution(s32 increment);
 
   void HandleSDLEvent(const SDL_Event* event);
   void HandleSDLKeyEvent(const SDL_Event* event);