[dxgi] Query device interface from the presenter

Removes the coupling between IDXGISwapChain and IDXGIDevice.
This is necessary because D3D12 devices don't support IDXGIDevice.

src/d3d11/d3d11_swapchain.cpp

@@ -73,6 +73,13 @@ namespace dxvk {
   }
 
 
+  HRESULT STDMETHODCALLTYPE D3D11SwapChain::GetDevice(
+          REFIID                    riid,
+          void**                    ppDevice) {
+    return m_parent->QueryInterface(riid, ppDevice);
+  }
+
+
   HRESULT STDMETHODCALLTYPE D3D11SwapChain::GetImage(
           UINT                      BufferId,
           REFIID                    riid,

src/d3d11/d3d11_swapchain.h

@@ -40,6 +40,10 @@ namespace dxvk {
     HRESULT STDMETHODCALLTYPE GetDesc(
             DXGI_SWAP_CHAIN_DESC1*    pDesc);
 
+    HRESULT STDMETHODCALLTYPE GetDevice(
+            REFIID                    riid,
+            void**                    ppDevice);
+    
     HRESULT STDMETHODCALLTYPE GetImage(
             UINT                      BufferId,
             REFIID                    riid,

src/dxgi/dxgi_interfaces.h

@@ -29,6 +29,10 @@ IDXGIVkSwapChain : public IUnknown {
 
   virtual HRESULT STDMETHODCALLTYPE GetDesc(
           DXGI_SWAP_CHAIN_DESC1*    pDesc) = 0;
+  
+  virtual HRESULT STDMETHODCALLTYPE GetDevice(
+          REFIID                    riid,
+          void**                    ppDevice) = 0;
 
   virtual HRESULT STDMETHODCALLTYPE GetImage(
           UINT                      BufferId,

src/dxgi/dxgi_swapchain.cpp

@@ -35,7 +35,6 @@ namespace dxvk {
     if (FAILED(device->GetAdapter(&adapter)))
       throw DxvkError("DXGI: DxgiSwapChain: Failed to retrieve adapter");
     
-    m_device  = static_cast<DxgiDevice*>(device.ptr());
     m_adapter = static_cast<DxgiAdapter*>(adapter.ptr());
     
     // Initialize frame statistics
@@ -93,7 +92,7 @@ namespace dxvk {
   
   
   HRESULT STDMETHODCALLTYPE DxgiSwapChain::GetDevice(REFIID riid, void** ppDevice) {
-    return m_device->QueryInterface(riid, ppDevice);
+    return m_presenter->GetDevice(riid, ppDevice);
   }
   
   

src/dxgi/dxgi_swapchain.h

@@ -136,7 +136,6 @@ namespace dxvk {
 
     Com<DxgiFactory>                m_factory;
     Com<DxgiAdapter>                m_adapter;
-    Com<DxgiDevice>                 m_device;
     
     HWND                            m_window;
     DXGI_SWAP_CHAIN_DESC1           m_desc;