d3dx: VertexBuffer should keep reference to the parent device object.

dlls/d3d8/d3d8_private.h

@@ -295,6 +295,9 @@ struct IDirect3DVertexBuffer8Impl
 
     /* IDirect3DResource8 fields */
     IWineD3DVertexBuffer             *wineD3DVertexBuffer;
+
+    /* Parent reference */
+    LPDIRECT3DDEVICE8                 parentDevice;
 };
 
 /* --------------------- */

dlls/d3d8/device.c

@@ -418,6 +418,8 @@ HRESULT WINAPI IDirect3DDevice8Impl_CreateVertexBuffer(LPDIRECT3DDEVICE8 iface,
         HeapFree(GetProcessHeap(), 0, object);
         *ppVertexBuffer = NULL;
     } else {
+        IUnknown_AddRef(iface);
+        object->parentDevice = iface;
         *ppVertexBuffer = (LPDIRECT3DVERTEXBUFFER8) object;
     }
     return hrc;

dlls/d3d8/vertexbuffer.c

@@ -57,6 +57,7 @@ ULONG WINAPI IDirect3DVertexBuffer8Impl_Release(LPDIRECT3DVERTEXBUFFER8 iface) {
 
     if (ref == 0) {
         IWineD3DVertexBuffer_Release(This->wineD3DVertexBuffer);
+        IUnknown_Release(This->parentDevice);
         HeapFree(GetProcessHeap(), 0, This);
     }
 

dlls/d3d9/d3d9_private.h

@@ -353,6 +353,9 @@ typedef struct IDirect3DVertexBuffer9Impl
 
     /* IDirect3DResource9 fields */
     IWineD3DVertexBuffer   *wineD3DVertexBuffer;
+
+    /* Parent reference */
+    LPDIRECT3DDEVICE9       parentDevice;
 } IDirect3DVertexBuffer9Impl;
 
 /* --------------------- */

dlls/d3d9/vertexbuffer.c

@@ -58,6 +58,7 @@ ULONG WINAPI IDirect3DVertexBuffer9Impl_Release(LPDIRECT3DVERTEXBUFFER9 iface) {
 
     if (ref == 0) {
         IWineD3DVertexBuffer_Release(This->wineD3DVertexBuffer);
+        IUnknown_Release(This->parentDevice);
         HeapFree(GetProcessHeap(), 0, This);
     }
     return ref;
@@ -180,6 +181,8 @@ HRESULT WINAPI IDirect3DDevice9Impl_CreateVertexBuffer(LPDIRECT3DDEVICE9 iface,
         FIXME("(%p) call to IWineD3DDevice_CreateVertexBuffer failed\n", This);
         HeapFree(GetProcessHeap(), 0, object);
     } else {
+        IUnknown_AddRef(iface);
+        object->parentDevice = iface;
         TRACE("(%p) : Created vertex buffer %p\n", This, object);
         *ppVertexBuffer = (LPDIRECT3DVERTEXBUFFER9) object;
     }