dxgi: Add IDXGISwapChain3 interface stub for D3D12.

dlls/dxgi/dxgi_private.h

@@ -31,8 +31,9 @@
 #include "objbase.h"
 #include "winnls.h"
 
-#include "d3d10_1.h"
 #include "dxgi1_6.h"
+#include "d3d10_1.h"
+#include "d3d12.h"
 #ifdef DXGI_INIT_GUID
 #include "initguid.h"
 #endif
@@ -178,6 +179,10 @@ HRESULT d3d11_swapchain_create(IWineDXGIDevice *device, HWND window, const DXGI_
 HRESULT d3d11_swapchain_init(struct d3d11_swapchain *swapchain, struct dxgi_device *device,
         struct wined3d_swapchain_desc *desc, BOOL implicit) DECLSPEC_HIDDEN;
 
+HRESULT d3d12_swapchain_create(IWineDXGIFactory *factory, ID3D12CommandQueue *queue, HWND window,
+        const DXGI_SWAP_CHAIN_DESC1 *swapchain_desc, const DXGI_SWAP_CHAIN_FULLSCREEN_DESC *fullscreen_desc,
+        IDXGISwapChain1 **swapchain) DECLSPEC_HIDDEN;
+
 /* IDXGISurface */
 struct dxgi_surface
 {

dlls/dxgi/factory.c

@@ -250,6 +250,7 @@ static HRESULT STDMETHODCALLTYPE dxgi_factory_CreateSwapChainForHwnd(IWineDXGIFa
         const DXGI_SWAP_CHAIN_FULLSCREEN_DESC *fullscreen_desc,
         IDXGIOutput *output, IDXGISwapChain1 **swapchain)
 {
+    ID3D12CommandQueue *command_queue;
     unsigned int min_buffer_count;
     IWineDXGIDevice *dxgi_device;
     HRESULT hr;
@@ -300,6 +301,13 @@ static HRESULT STDMETHODCALLTYPE dxgi_factory_CreateSwapChainForHwnd(IWineDXGIFa
         return hr;
     }
 
+    if (SUCCEEDED(IUnknown_QueryInterface(device, &IID_ID3D12CommandQueue, (void **)&command_queue)))
+    {
+        hr = d3d12_swapchain_create(iface, command_queue, window, swapchain_desc, fullscreen_desc, swapchain);
+        ID3D12CommandQueue_Release(command_queue);
+        return hr;
+    }
+
     ERR("This is not the device we're looking for.\n");
     return DXGI_ERROR_UNSUPPORTED;
 }