diff -r 000000000000 -r 6474c204b198 gfx/angle/src/compiler/timing/RestrictVertexShaderTiming.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/compiler/timing/RestrictVertexShaderTiming.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+//
+// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#include "compiler/timing/RestrictVertexShaderTiming.h"
+
+void RestrictVertexShaderTiming::visitSymbol(TIntermSymbol* node)
+{
+    if (IsSampler(node->getBasicType())) {
+        ++mNumErrors;
+        mSink.message(EPrefixError,
+                      node->getLine(),
+                      "Samplers are not permitted in vertex shaders");
+    }
+}