Force "smooth" interpolation qualification when in a fragment shader.

BuildLinux.sh

@@ -8,6 +8,7 @@ LD_LIBRARY_PATH=`pwd`/glslang/MachineIndependent/lib:${LD_LIBRARY_PATH}
 export LD_LIBRARY_PATH
 
 # run using test data
-cd StandAlone
-./StandAlone -i sample.vert sample.frag
+cd Test
+../StandAlone/StandAlone -i sample.vert sample.frag
+
 

glslang/MachineIndependent/glslang.y

@@ -1601,6 +1601,9 @@ fully_specified_type
         $$.qualifier = $1.qualifier;
         if ($$.qualifier.precision == EpqNone)
             $$.qualifier.precision = $2.qualifier.precision;
+
+        if (! $$.qualifier.isInterpolation() && parseContext.language == EShLangFragment)
+            $$.qualifier.smooth = true;
     }
     ;