WindowInfo: Don't clear display when going surfaceless

Fixes panic when a popup occurs when using GLX.

src/common/window_info.cpp

@@ -2,6 +2,21 @@
 #include "common/log.h"
 Log_SetChannel(WindowInfo);
 
+void WindowInfo::SetSurfaceless()
+{
+  type = Type::Surfaceless;
+  window_handle = nullptr;
+  surface_width = 0;
+  surface_height = 0;
+  surface_refresh_rate = 0.0f;
+  surface_scale = 1.0f;
+  surface_format = SurfaceFormat::None;
+
+#ifdef __APPLE__
+  surface_handle = nullptr;
+#endif
+}
+
 #if defined(_WIN32)
 
 #include "common/windows_headers.h"

src/common/window_info.h

@@ -39,5 +39,8 @@ struct WindowInfo
   void* surface_handle = nullptr;
 #endif
 
+  // Changes the window to be surfaceless (i.e. no handle/size/etc).
+  void SetSurfaceless();
+
   static bool QueryRefreshRateForWindow(const WindowInfo& wi, float* refresh_rate);
 };

src/frontend-common/d3d11_host_display.cpp

@@ -459,6 +459,7 @@ bool D3D11HostDisplay::ChangeRenderWindow(const WindowInfo& new_wi)
 
 void D3D11HostDisplay::DestroyRenderSurface()
 {
+  m_window_info.SetSurfaceless();
   if (IsFullscreen())
     SetFullscreen(false, 0, 0, 0.0f);
 

src/frontend-common/d3d12_host_display.cpp

@@ -348,6 +348,8 @@ bool D3D12HostDisplay::ChangeRenderWindow(const WindowInfo& new_wi)
 
 void D3D12HostDisplay::DestroyRenderSurface()
 {
+  m_window_info.SetSurfaceless();
+
   // For some reason if we don't execute the command list here, the swap chain is in use.. not sure where.
   g_d3d12_context->ExecuteCommandList(true);
 

src/frontend-common/opengl_host_display.cpp

@@ -408,7 +408,7 @@ void OpenGLHostDisplay::DestroyRenderSurface()
   if (!m_gl_context)
     return;
 
-  m_window_info = {};
+  m_window_info.SetSurfaceless();
   if (!m_gl_context->ChangeSurface(m_window_info))
     Log_ErrorPrintf("Failed to switch to surfaceless");
 }

src/frontend-common/vulkan_host_display.cpp

@@ -130,7 +130,7 @@ HostDisplay::AdapterAndModeList VulkanHostDisplay::GetAdapterAndModeList()
 
 void VulkanHostDisplay::DestroyRenderSurface()
 {
-  m_window_info = {};
+  m_window_info.SetSurfaceless();
   g_vulkan_context->WaitForGPUIdle();
   m_swap_chain.reset();
 }