d3d8: Add a separate function for volume initialization.

dlls/d3d8/d3d8_private.h

@@ -218,7 +218,6 @@ struct IDirect3DDevice8Impl
 /*****************************************************************************
  * IDirect3DVolume8 implementation structure
  */
-extern const IDirect3DVolume8Vtbl Direct3DVolume8_Vtbl;
 struct IDirect3DVolume8Impl
 {
     /* IUnknown fields */
@@ -235,6 +234,9 @@ struct IDirect3DVolume8Impl
     IUnknown                    *forwardReference;
 };
 
+HRESULT volume_init(IDirect3DVolume8Impl *volume, IDirect3DDevice8Impl *device, UINT width, UINT height,
+        UINT depth, DWORD usage, WINED3DFORMAT format, WINED3DPOOL pool);
+
 /* ------------------- */
 /* IDirect3DSwapChain8 */
 /* ------------------- */

dlls/d3d8/device.c

@@ -2753,15 +2753,11 @@ static HRESULT STDMETHODCALLTYPE device_parent_CreateVolume(IWineD3DDeviceParent
         return D3DERR_OUTOFVIDEOMEMORY;
     }
 
-    object->lpVtbl = &Direct3DVolume8_Vtbl;
-    object->ref = 1;
-    hr = IWineD3DDevice_CreateVolume(This->WineD3DDevice, width, height, depth, usage,
-            format, pool, &object->wineD3DVolume, (IUnknown *)object);
+    hr = volume_init(object, This, width, height, depth, usage, format, pool);
     if (FAILED(hr))
     {
-        ERR("(%p) CreateVolume failed, returning %#x\n", iface, hr);
+        WARN("Failed to initialize volume, hr %#x.\n", hr);
         HeapFree(GetProcessHeap(), 0, object);
-        *volume = NULL;
         return hr;
     }
 
@@ -2769,7 +2765,7 @@ static HRESULT STDMETHODCALLTYPE device_parent_CreateVolume(IWineD3DDeviceParent
     object->container = superior;
     object->forwardReference = superior;
 
-    TRACE("(%p) Created volume %p\n", iface, *volume);
+    TRACE("(%p) Created volume %p\n", iface, object);
 
     return hr;
 }

dlls/d3d8/volume.c

@@ -202,7 +202,7 @@ static HRESULT WINAPI IDirect3DVolume8Impl_UnlockBox(LPDIRECT3DVOLUME8 iface) {
     return hr;
 }
 
-const IDirect3DVolume8Vtbl Direct3DVolume8_Vtbl =
+static const IDirect3DVolume8Vtbl Direct3DVolume8_Vtbl =
 {
     /* IUnknown */
     IDirect3DVolume8Impl_QueryInterface,
@@ -228,3 +228,22 @@ ULONG WINAPI D3D8CB_DestroyVolume(IWineD3DVolume *pVolume) {
     volumeParent->forwardReference = NULL;
     return IDirect3DVolume8_Release((IDirect3DVolume8*) volumeParent);
 }
+
+HRESULT volume_init(IDirect3DVolume8Impl *volume, IDirect3DDevice8Impl *device, UINT width, UINT height,
+        UINT depth, DWORD usage, WINED3DFORMAT format, WINED3DPOOL pool)
+{
+    HRESULT hr;
+
+    volume->lpVtbl = &Direct3DVolume8_Vtbl;
+    volume->ref = 1;
+
+    hr = IWineD3DDevice_CreateVolume(device->WineD3DDevice, width, height, depth, usage,
+            format, pool, &volume->wineD3DVolume, (IUnknown *)volume);
+    if (FAILED(hr))
+    {
+        WARN("Failed to create wined3d volume, hr %#x.\n", hr);
+        return hr;
+    }
+
+    return D3D_OK;
+}