dxgi: Read back the swapchain size assigned by wined3d.

dlls/dxgi/swapchain.c

@@ -873,6 +873,7 @@ static HRESULT d3d11_swapchain_create_d3d11_textures(struct d3d11_swapchain *swa
 HRESULT d3d11_swapchain_init(struct d3d11_swapchain *swapchain, struct dxgi_device *device,
         struct wined3d_swapchain_desc *desc)
 {
+    struct wined3d_swapchain_state *state;
     BOOL fullscreen;
     HRESULT hr;
 
@@ -907,6 +908,9 @@ HRESULT d3d11_swapchain_init(struct d3d11_swapchain *swapchain, struct dxgi_devi
         goto cleanup;
     }
 
+    state = wined3d_swapchain_get_state(swapchain->wined3d_swapchain);
+    wined3d_swapchain_state_get_size(state, &desc->backbuffer_width, &desc->backbuffer_height);
+
     if (FAILED(hr = d3d11_swapchain_create_d3d11_textures(swapchain, &device->IWineDXGIDevice_iface, desc)))
     {
         ERR("Failed to create d3d11 textures, hr %#lx.\n", hr);
@@ -916,10 +920,7 @@ HRESULT d3d11_swapchain_init(struct d3d11_swapchain *swapchain, struct dxgi_devi
     swapchain->target = NULL;
     if (fullscreen)
     {
-        struct wined3d_swapchain_state *state;
-
         desc->windowed = FALSE;
-        state = wined3d_swapchain_get_state(swapchain->wined3d_swapchain);
 
         if (FAILED(hr = IDXGISwapChain1_GetContainingOutput(&swapchain->IDXGISwapChain1_iface,
                 &swapchain->target)))
@@ -3130,6 +3131,8 @@ static HRESULT d3d12_swapchain_init(struct d3d12_swapchain *swapchain, IWineDXGI
         return hr;
     }
 
+    wined3d_swapchain_state_get_size(swapchain->state, &swapchain->desc.Width, &swapchain->desc.Height);
+
     if (fullscreen)
     {
         wined3d_desc.windowed = FALSE;

dlls/wined3d/swapchain.c

@@ -2427,6 +2427,15 @@ BOOL CDECL wined3d_swapchain_state_is_windowed(const struct wined3d_swapchain_st
     return state->desc.windowed;
 }
 
+void CDECL wined3d_swapchain_state_get_size(const struct wined3d_swapchain_state *state,
+        unsigned int *width, unsigned int *height)
+{
+    TRACE("state %p.\n", state);
+
+    *width = state->desc.backbuffer_width;
+    *height = state->desc.backbuffer_height;
+}
+
 void CDECL wined3d_swapchain_state_destroy(struct wined3d_swapchain_state *state)
 {
     wined3d_swapchain_state_cleanup(state);

dlls/wined3d/wined3d.spec

@@ -292,6 +292,7 @@
 
 @ cdecl wined3d_swapchain_state_create(ptr ptr ptr ptr ptr)
 @ cdecl wined3d_swapchain_state_destroy(ptr)
+@ cdecl wined3d_swapchain_state_get_size(ptr ptr ptr)
 @ cdecl wined3d_swapchain_state_is_windowed(ptr)
 @ cdecl wined3d_swapchain_state_resize_target(ptr ptr)
 @ cdecl wined3d_swapchain_state_set_fullscreen(ptr ptr ptr)

include/wine/wined3d.h

@@ -2854,6 +2854,8 @@ HRESULT __cdecl wined3d_swapchain_state_create(const struct wined3d_swapchain_de
         HWND window, struct wined3d *wined3d, struct wined3d_swapchain_state_parent *state_parent,
         struct wined3d_swapchain_state **state);
 void __cdecl wined3d_swapchain_state_destroy(struct wined3d_swapchain_state *state);
+void __cdecl wined3d_swapchain_state_get_size(const struct wined3d_swapchain_state *state,
+        unsigned int *width, unsigned int *height);
 BOOL __cdecl wined3d_swapchain_state_is_windowed(const struct wined3d_swapchain_state *state);
 HRESULT __cdecl wined3d_swapchain_state_resize_target(struct wined3d_swapchain_state *state,
         const struct wined3d_display_mode *mode);