[D3DX8] Use Interlocked* functions in AddRef and Release

[Paul Vriens]

Hi,

my install works again :-), so here's the next one.

Wherever possible, I changed the TRACE's not to contain This->*ref*
(without changing the text-part).

Changelog:
- use Interlocked* functions in AddRef and Release.
- store the result of the Interlocked functions and use only this.

Cheers,

Paul Vriens

Index: dlls/d3dx8/d3dxbuffer.c
===================================================================
RCS file: /home/wine/wine/dlls/d3dx8/d3dxbuffer.c,v
retrieving revision 1.6
diff -u -p -r1.6 d3dxbuffer.c
--- dlls/d3dx8/d3dxbuffer.c     23 Dec 2004 18:33:45 -0000      1.6
+++ dlls/d3dx8/d3dxbuffer.c     21 Jan 2005 07:35:40 -0000
@@ -51,14 +51,19 @@ HRESULT WINAPI ID3DXBufferImpl_QueryInte
                                                                                                                                               
 ULONG WINAPI ID3DXBufferImpl_AddRef(LPD3DXBUFFER iface) {
   ID3DXBufferImpl *This = (ID3DXBufferImpl *)iface;
-  TRACE("(%p) : AddRef from %ld\n", This, This->ref);
-  return ++(This->ref);
+  ULONG ref = InterlockedIncrement(&This->ref);
+
+  TRACE("(%p) : AddRef from %ld\n", This, ref - 1);
+
+  return ref;
 }
                                                                                                                                               
 ULONG WINAPI ID3DXBufferImpl_Release(LPD3DXBUFFER iface) {
   ID3DXBufferImpl *This = (ID3DXBufferImpl *)iface;
-  ULONG ref = --This->ref;
-  TRACE("(%p) : ReleaseRef to %ld\n", This, This->ref);
+  ULONG ref = InterlockedDecrement(&This->ref);
+
+  TRACE("(%p) : ReleaseRef to %ld\n", This, ref);
+
   if (ref == 0) {
     HeapFree(GetProcessHeap(), 0, This->buffer);
     HeapFree(GetProcessHeap(), 0, This);