diff --git a/graphics/java/android/renderscript/SimpleMesh.java b/graphics/java/android/renderscript/SimpleMesh.java
index b422702..0ad093e 100644
--- a/graphics/java/android/renderscript/SimpleMesh.java
+++ b/graphics/java/android/renderscript/SimpleMesh.java
@@ -290,6 +290,11 @@
         }
 
         public void addTriangle(int idx1, int idx2, int idx3) {
+            if((idx1 >= mVtxCount) || (idx1 < 0) ||
+               (idx2 >= mVtxCount) || (idx2 < 0) ||
+               (idx3 >= mVtxCount) || (idx3 < 0)) {
+               throw new IllegalStateException("Index provided greater than vertex count.");
+            }
             if ((mIndexCount + 3) >= mIndexData.length) {
                 short t[] = new short[mIndexData.length * 2];
                 System.arraycopy(mIndexData, 0, t, 0, mIndexData.length);
diff --git a/libs/rs/rsContext.h b/libs/rs/rsContext.h
index b56e7d7..3570e10 100644
--- a/libs/rs/rsContext.h
+++ b/libs/rs/rsContext.h
@@ -99,6 +99,7 @@
 
     uint32_t getMessageToClient(void *data, size_t *receiveLen, size_t bufferLen, bool wait);
     bool sendMessageToClient(void *data, uint32_t cmdID, size_t len, bool waitForSpace);
+    bool runScript(Script *s, uint32_t launchID);
 
     void initToClient();
     void deinitToClient();
@@ -212,7 +213,6 @@
 
     void initEGL();
 
-    bool runScript(Script *s, uint32_t launchID);
     bool runRootScript();
 
     static void * threadProc(void *);
diff --git a/libs/rs/rsScriptC_Lib.cpp b/libs/rs/rsScriptC_Lib.cpp
index 9a96290..436f48b 100644
--- a/libs/rs/rsScriptC_Lib.cpp
+++ b/libs/rs/rsScriptC_Lib.cpp
@@ -1008,6 +1008,13 @@
     return rsc->sendMessageToClient(data, cmdID, len, waitForSpace != 0);
 }
 
+static void SC_scriptCall(int scriptID)
+{
+    GET_TLS();
+    rsc->runScript((Script *)scriptID, 0);
+}
+
+
 //////////////////////////////////////////////////////////////////////////////
 // Class implementation
 //////////////////////////////////////////////////////////////////////////////
@@ -1289,6 +1296,9 @@
     { "debugHexI32", (void *)&SC_debugHexI32,
         "void", "(void *, int)" },
 
+    { "scriptCall", (void *)&SC_scriptCall,
+        "void", "(int)" },
+
 
     { NULL, NULL, NULL, NULL }
 };