dxgi: Slightly simplify d3d11_swapchain_init().

dlls/dxgi/device.c

@@ -474,7 +474,7 @@ static HRESULT STDMETHODCALLTYPE dxgi_swapchain_factory_create_swapchain(IWineDX
         return E_OUTOFMEMORY;
     }
 
-    if (FAILED(hr = d3d11_swapchain_init(object, device, &wined3d_desc, FALSE)))
+    if (FAILED(hr = d3d11_swapchain_init(object, device, &wined3d_desc)))
     {
         WARN("Failed to initialise swapchain, hr %#x.\n", hr);
         heap_free(object);
@@ -578,7 +578,7 @@ HRESULT dxgi_device_init(struct dxgi_device *device, struct dxgi_device_layer *l
         return E_OUTOFMEMORY;
     }
 
-    if (FAILED(hr = d3d11_swapchain_init(swapchain, device, &swapchain_desc, TRUE)))
+    if (FAILED(hr = d3d11_swapchain_init(swapchain, device, &swapchain_desc)))
     {
         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
         heap_free(swapchain);

dlls/dxgi/dxgi_private.h

@@ -178,7 +178,7 @@ struct d3d11_swapchain
 };
 
 HRESULT d3d11_swapchain_init(struct d3d11_swapchain *swapchain, struct dxgi_device *device,
-        struct wined3d_swapchain_desc *desc, BOOL implicit) DECLSPEC_HIDDEN;
+        struct wined3d_swapchain_desc *desc) 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,

dlls/dxgi/swapchain.c

@@ -779,16 +779,14 @@ static const struct wined3d_parent_ops d3d11_swapchain_wined3d_parent_ops =
 };
 
 HRESULT d3d11_swapchain_init(struct d3d11_swapchain *swapchain, struct dxgi_device *device,
-        struct wined3d_swapchain_desc *desc, BOOL implicit)
+        struct wined3d_swapchain_desc *desc)
 {
     HRESULT hr;
 
-    /*
-     * A reference to the implicit swapchain is held by the wined3d device.
-     * In order to avoid circular references we do not keep a reference
-     * to the device in the implicit swapchain.
-     */
-    if (!implicit)
+    /* A reference to the implicit swapchain is held by the wined3d device. In
+     * order to avoid circular references we do not keep a reference to the
+     * device in the implicit swapchain. */
+    if (!(desc->flags & WINED3D_SWAPCHAIN_IMPLICIT))
     {
         if (desc->backbuffer_format == WINED3DFMT_UNKNOWN)
             return E_INVALIDARG;