wined3d: Keep track of a context's current render target.
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 59b91b3..c76db79 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -1203,6 +1203,7 @@
     DWORD                   isStateDirty[STATE_HIGHEST/32 + 1]; /* Bitmap to find out quickly if a state is dirty */
 
     IWineD3DSurface         *surface;
+    IWineD3DSurface *current_rt;
     DWORD                   tid;    /* Thread ID which owns this context at the moment */
 
     /* Stores some information about the context state for optimization */