System: Move present skip check to core

src/frontend-common/common_host.cpp

@@ -394,7 +394,7 @@ void Host::DisplayLoadingScreen(const char* message, int progress_min /*= -1*/,
   ImGui::End();
 
   ImGui::EndFrame();
-  g_host_display->Render();
+  g_host_display->Render(false);
   ImGui::NewFrame();
 }
 

src/frontend-common/d3d11_host_display.cpp

@@ -745,9 +745,9 @@ bool D3D11HostDisplay::UpdateImGuiFontTexture()
   return true;
 }
 
-bool D3D11HostDisplay::Render()
+bool D3D11HostDisplay::Render(bool skip_present)
 {
-  if (ShouldSkipDisplayingFrame() || !m_swap_chain)
+  if (skip_present || !m_swap_chain)
   {
     if (ImGui::GetCurrentContext())
       ImGui::Render();

src/frontend-common/d3d11_host_display.h

@@ -67,7 +67,7 @@ public:
 
   void SetVSync(bool enabled) override;
 
-  bool Render() override;
+  bool Render(bool skip_present) override;
   bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
                         HostDisplayPixelFormat* out_format) override;
 

src/frontend-common/d3d12_host_display.cpp

@@ -650,9 +650,9 @@ bool D3D12HostDisplay::UpdateImGuiFontTexture()
   return ImGui_ImplDX12_CreateFontsTexture();
 }
 
-bool D3D12HostDisplay::Render()
+bool D3D12HostDisplay::Render(bool skip_present)
 {
-  if (ShouldSkipDisplayingFrame() || !m_swap_chain)
+  if (skip_present || !m_swap_chain)
   {
     if (ImGui::GetCurrentContext())
       ImGui::Render();

src/frontend-common/d3d12_host_display.h

@@ -68,7 +68,7 @@ public:
 
   virtual void SetVSync(bool enabled) override;
 
-  virtual bool Render() override;
+  virtual bool Render(bool skip_present) override;
   virtual bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
                                 HostDisplayPixelFormat* out_format) override;
 

src/frontend-common/opengl_host_display.cpp

@@ -738,9 +738,9 @@ void OpenGLHostDisplay::DestroyResources()
   m_display_program.Destroy();
 }
 
-bool OpenGLHostDisplay::Render()
+bool OpenGLHostDisplay::Render(bool skip_present)
 {
-  if (ShouldSkipDisplayingFrame())
+  if (skip_present || m_window_info.type == WindowInfo::Type::Surfaceless)
   {
     if (ImGui::GetCurrentContext())
       ImGui::Render();

src/frontend-common/opengl_host_display.h

@@ -58,7 +58,7 @@ public:
 
   void SetVSync(bool enabled) override;
 
-  bool Render() override;
+  bool Render(bool skip_present) override;
   bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
                         HostDisplayPixelFormat* out_format) override;
 

src/frontend-common/vulkan_host_display.cpp

@@ -572,9 +572,9 @@ bool VulkanHostDisplay::DoneRenderContextCurrent()
   return true;
 }
 
-bool VulkanHostDisplay::Render()
+bool VulkanHostDisplay::Render(bool skip_present)
 {
-  if (ShouldSkipDisplayingFrame() || !m_swap_chain)
+  if (skip_present || !m_swap_chain)
   {
     if (ImGui::GetCurrentContext())
       ImGui::Render();

src/frontend-common/vulkan_host_display.h

@@ -63,7 +63,7 @@ public:
 
   void SetVSync(bool enabled) override;
 
-  bool Render() override;
+  bool Render(bool skip_present) override;
   bool RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
                         HostDisplayPixelFormat* out_format) override;