wined3d: Implement the varying map.
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 1fab9aa..56ba569 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -2084,6 +2084,7 @@
     /* Pixel shader input semantics */
     semantic semantics_in [MAX_REG_INPUT];
     DWORD                 input_reg_map[MAX_REG_INPUT];
+    BOOL                  input_reg_used[MAX_REG_INPUT];
 
     /* run time data */
     PSHADERDATA                *data;