diff --git a/tests/RenderScriptTests/tests/src/com/android/rs/test/RSTestCore.java b/tests/RenderScriptTests/tests/src/com/android/rs/test/RSTestCore.java
index 36f13b17bc708..f0ce458b91958 100644
--- a/tests/RenderScriptTests/tests/src/com/android/rs/test/RSTestCore.java
+++ b/tests/RenderScriptTests/tests/src/com/android/rs/test/RSTestCore.java
@@ -67,6 +67,7 @@ public class RSTestCore {
         unitTests.add(new UT_primitives(this, mRes, mCtx));
         unitTests.add(new UT_constant(this, mRes, mCtx));
         unitTests.add(new UT_vector(this, mRes, mCtx));
+        unitTests.add(new UT_unsigned(this, mRes, mCtx));
         unitTests.add(new UT_array_init(this, mRes, mCtx));
         unitTests.add(new UT_array_alloc(this, mRes, mCtx));
         unitTests.add(new UT_clamp(this, mRes, mCtx));
diff --git a/tests/RenderScriptTests/tests/src/com/android/rs/test/UT_unsigned.java b/tests/RenderScriptTests/tests/src/com/android/rs/test/UT_unsigned.java
new file mode 100644
index 0000000000000..2164766bec7d9
--- /dev/null
+++ b/tests/RenderScriptTests/tests/src/com/android/rs/test/UT_unsigned.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.rs.test;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.renderscript.*;
+
+public class UT_unsigned extends UnitTest {
+    private Resources mRes;
+
+    protected UT_unsigned(RSTestCore rstc, Resources res, Context ctx) {
+        super(rstc, "Unsigned", ctx);
+        mRes = res;
+    }
+
+    private boolean initializeGlobals(ScriptC_unsigned s) {
+        short pUC = s.get_uc();
+        if (pUC != 5) {
+            return false;
+        }
+        s.set_uc((short)129);
+
+        long pUI = s.get_ui();
+        if (pUI != 37) {
+            return false;
+        }
+        s.set_ui(0x7fffffff);
+
+        return true;
+    }
+
+    public void run() {
+        RenderScript pRS = RenderScript.create(mCtx);
+        ScriptC_unsigned s = new ScriptC_unsigned(pRS, mRes, R.raw.unsigned);
+        pRS.setMessageHandler(mRsMessage);
+        if (!initializeGlobals(s)) {
+            failTest();
+        } else {
+            s.invoke_unsigned_test();
+            pRS.finish();
+            waitForMessage();
+        }
+        pRS.destroy();
+    }
+}
diff --git a/tests/RenderScriptTests/tests/src/com/android/rs/test/unsigned.rs b/tests/RenderScriptTests/tests/src/com/android/rs/test/unsigned.rs
new file mode 100644
index 0000000000000..2c056f49c2c23
--- /dev/null
+++ b/tests/RenderScriptTests/tests/src/com/android/rs/test/unsigned.rs
@@ -0,0 +1,36 @@
+#include "shared.rsh"
+
+// Testing unsigned types for Bug 6764163
+unsigned int ui = 37;
+unsigned char uc = 5;
+
+static bool test_unsigned() {
+    bool failed = false;
+
+    rsDebug("ui", ui);
+    rsDebug("uc", uc);
+    _RS_ASSERT(ui == 0x7fffffff);
+    _RS_ASSERT(uc == 129);
+
+    if (failed) {
+        rsDebug("test_unsigned FAILED", -1);
+    }
+    else {
+        rsDebug("test_unsigned PASSED", 0);
+    }
+
+    return failed;
+}
+
+void unsigned_test() {
+    bool failed = false;
+    failed |= test_unsigned();
+
+    if (failed) {
+        rsSendToClientBlocking(RS_MSG_TEST_FAILED);
+    }
+    else {
+        rsSendToClientBlocking(RS_MSG_TEST_PASSED);
+    }
+}
+