Video Common: Use correct aspect ratio when saving screenshots / video

Source/Core/VideoCommon/RenderBase.cpp

@@ -518,13 +518,26 @@ void Renderer::UpdateDrawRectangle()
 
 void Renderer::SetWindowSize(int width, int height)
 {
-  width = std::max(width, 1);
-  height = std::max(height, 1);
-
   // Scale the window size by the EFB scale.
   if (g_ActiveConfig.iEFBScale != EFB_SCALE_AUTO_INTEGRAL)
     std::tie(width, height) = CalculateTargetScale(width, height);
 
+  std::tie(width, height) = CalculateOutputDimensions(width, height);
+
+  // Track the last values of width/height to avoid sending a window resize event every frame.
+  if (width != m_last_window_request_width || height != m_last_window_request_height)
+  {
+    m_last_window_request_width = width;
+    m_last_window_request_height = height;
+    Host_RequestRenderWindowSize(width, height);
+  }
+}
+
+std::tuple<int, int> Renderer::CalculateOutputDimensions(int width, int height)
+{
+  width = std::max(width, 1);
+  height = std::max(height, 1);
+
   float scaled_width, scaled_height;
   std::tie(scaled_width, scaled_height) = ScaleToDisplayAspectRatio(width, height);
 
@@ -556,13 +569,7 @@ void Renderer::SetWindowSize(int width, int height)
   width -= width % 4;
   height -= height % 4;
 
-  // Track the last values of width/height to avoid sending a window resize event every frame.
-  if (width != m_last_window_request_width || height != m_last_window_request_height)
-  {
-    m_last_window_request_width = width;
-    m_last_window_request_height = height;
-    Host_RequestRenderWindowSize(width, height);
-  }
+  return std::make_tuple(width, height);
 }
 
 void Renderer::CheckFifoRecording()
@@ -620,9 +627,11 @@ void Renderer::Swap(u32 xfbAddr, u32 fbWidth, u32 fbStride, u32 fbHeight, const
   // The FinishFrameData call here is necessary even after frame dumping is stopped.
   // If left out, screenshots are "one frame" behind, as an extra frame is dumped and buffered.
   FinishFrameData();
-  if (IsFrameDumping())
+  if (IsFrameDumping() && m_last_xfb_texture)
   {
-    auto result = m_last_xfb_texture->Map();
+    UpdateFrameDumpTexture(horizontal_scale);
+
+    auto result = m_dump_texture->Map();
     if (result.has_value())
     {
       auto raw_data = result.value();
@@ -679,6 +688,26 @@ bool Renderer::IsFrameDumping()
   return false;
 }
 
+void Renderer::UpdateFrameDumpTexture(float horizontal_scale)
+{
+  int target_width, target_height;
+  std::tie(target_width, target_height) = CalculateOutputDimensions(m_last_xfb_texture->GetConfig().width, m_last_xfb_texture->GetConfig().height);
+  if (m_dump_texture == nullptr ||
+      m_dump_texture->GetConfig().width != static_cast<u32>(target_width) ||
+      m_dump_texture->GetConfig().height != static_cast<u32>(target_height))
+  {
+    TextureConfig config;
+    config.width = target_width;
+    config.height = target_height;
+    config.rendertarget = true;
+    m_dump_texture = g_texture_cache->CreateTexture(config);
+  }
+  auto source_rect = m_last_xfb_texture->GetConfig().GetRect();
+  source_rect.right /= horizontal_scale;
+  m_dump_texture->CopyRectangleFromTexture(m_last_xfb_texture, source_rect,
+                                           EFBRectangle{0, 0, target_width, target_height});
+}
+
 void Renderer::ShutdownFrameDumping()
 {
   if (!m_frame_dump_thread_running.IsSet())

Source/Core/VideoCommon/RenderBase.h

@@ -181,6 +181,8 @@ protected:
 private:
   void RunFrameDumps();
   void ShutdownFrameDumping();
+  std::tuple<int, int> CalculateOutputDimensions(int width, int height);
+  void UpdateFrameDumpTexture(float horizontal_scale);
 
   PEControl::PixelFormat m_prev_efb_format = PEControl::INVALID_FMT;
   unsigned int m_efb_scale = 1;
@@ -209,6 +211,8 @@ private:
   AbstractTexture * m_last_xfb_texture;
   u64 m_last_xfb_id = 0;
 
+  std::unique_ptr<AbstractTexture> m_dump_texture;
+
   // Note: Only used for auto-ir
   u32 m_last_xfb_width = MAX_XFB_WIDTH;
   u32 m_last_xfb_height = MAX_XFB_HEIGHT;

Source/Core/VideoCommon/TextureCacheBase.h

@@ -216,6 +216,8 @@ public:
 
   void ScaleTextureCacheEntryTo(TCacheEntry* entry, u32 new_width, u32 new_height);
 
+  virtual std::unique_ptr<AbstractTexture> CreateTexture(const TextureConfig& config) = 0;
+
 protected:
   TextureCacheBase();
 
@@ -257,8 +259,6 @@ private:
   std::pair<TexAddrCache::iterator, TexAddrCache::iterator>
   FindOverlappingTextures(u32 addr, u32 size_in_bytes);
 
-  virtual std::unique_ptr<AbstractTexture> CreateTexture(const TextureConfig& config) = 0;
-
   virtual void CopyEFBToCacheEntry(TCacheEntry* entry, bool is_depth_copy,
                                    const EFBRectangle& src_rect, bool scale_by_half,
                                    unsigned int cbuf_id, const float* colmat) = 0;