wined3d: Store an IWineD3DClipperImpl pointer in IWineD3DSurfaceImpl.

dlls/wined3d/surface.c

@@ -3507,16 +3507,16 @@ static HRESULT IWineD3DSurfaceImpl_BltOverride(IWineD3DSurfaceImpl *dst_surface,
             }
 
             /* Destination must be full surface or match the clipping rectangle */
-            if (dst_surface->clipper && ((IWineD3DClipperImpl *)dst_surface->clipper)->hWnd)
+            if (dst_surface->clipper && dst_surface->clipper->hWnd)
             {
                 RECT cliprect;
                 POINT pos[2];
-                GetClientRect(((IWineD3DClipperImpl *)dst_surface->clipper)->hWnd, &cliprect);
+                GetClientRect(dst_surface->clipper->hWnd, &cliprect);
                 pos[0].x = dst_rect.left;
                 pos[0].y = dst_rect.top;
                 pos[1].x = dst_rect.right;
                 pos[1].y = dst_rect.bottom;
-                MapWindowPoints(GetDesktopWindow(), ((IWineD3DClipperImpl *)dst_surface->clipper)->hWnd, pos, 2);
+                MapWindowPoints(GetDesktopWindow(), dst_surface->clipper->hWnd, pos, 2);
 
                 if(pos[0].x != cliprect.left  || pos[0].y != cliprect.top   ||
                    pos[1].x != cliprect.right || pos[1].y != cliprect.bottom)

dlls/wined3d/surface_base.c

@@ -471,7 +471,7 @@ HRESULT WINAPI IWineD3DBaseSurfaceImpl_SetClipper(IWineD3DSurface *iface, IWineD
     IWineD3DSurfaceImpl *This = (IWineD3DSurfaceImpl *) iface;
     TRACE("(%p)->(%p)\n", This, clipper);
 
-    This->clipper = clipper;
+    This->clipper = (IWineD3DClipperImpl *)clipper;
     return WINED3D_OK;
 }
 
@@ -480,10 +480,10 @@ HRESULT WINAPI IWineD3DBaseSurfaceImpl_GetClipper(IWineD3DSurface *iface, IWineD
     IWineD3DSurfaceImpl *This = (IWineD3DSurfaceImpl *) iface;
     TRACE("(%p)->(%p)\n", This, clipper);
 
-    *clipper = This->clipper;
-    if(*clipper) {
+    *clipper = (IWineD3DClipper *)This->clipper;
+    if (*clipper)
         IWineD3DClipper_AddRef(*clipper);
-    }
+
     return WINED3D_OK;
 }
 

dlls/wined3d/wined3d_private.h

@@ -2140,7 +2140,7 @@ struct IWineD3DSurfaceImpl
     SIZE ds_current_size;
 
     /* DirectDraw clippers */
-    IWineD3DClipper           *clipper;
+    struct IWineD3DClipperImpl *clipper;
 
     /* DirectDraw Overlay handling */
     RECT                      overlay_srcrect;