diff --git a/rs/java/android/renderscript/FieldPacker.java b/rs/java/android/renderscript/FieldPacker.java
index 20b07e7..0f967fc 100644
--- a/rs/java/android/renderscript/FieldPacker.java
+++ b/rs/java/android/renderscript/FieldPacker.java
@@ -241,8 +241,7 @@
                 addI64(0);
                 addI64(0);
                 addI64(0);
-            }
-            else {
+            } else {
                 addI32((int)obj.getID(null));
             }
         } else {
@@ -619,6 +618,289 @@
         return mPos;
     }
 
+    private static void addToPack(FieldPacker fp, Object obj) {
+        if (obj instanceof Boolean) {
+            fp.addBoolean(((Boolean)obj).booleanValue());
+            return;
+        }
+
+        if (obj instanceof Byte) {
+            fp.addI8(((Byte)obj).byteValue());
+            return;
+        }
+
+        if (obj instanceof Short) {
+            fp.addI16(((Short)obj).shortValue());
+            return;
+        }
+
+        if (obj instanceof Integer) {
+            fp.addI32(((Integer)obj).intValue());
+            return;
+        }
+
+        if (obj instanceof Long) {
+            fp.addI64(((Long)obj).longValue());
+            return;
+        }
+
+        if (obj instanceof Float) {
+            fp.addF32(((Float)obj).floatValue());
+            return;
+        }
+
+        if (obj instanceof Double) {
+            fp.addF64(((Double)obj).doubleValue());
+            return;
+        }
+
+        if (obj instanceof Byte2) {
+            fp.addI8((Byte2)obj);
+            return;
+        }
+
+        if (obj instanceof Byte3) {
+            fp.addI8((Byte3)obj);
+            return;
+        }
+
+        if (obj instanceof Byte4) {
+            fp.addI8((Byte4)obj);
+            return;
+        }
+
+        if (obj instanceof Short2) {
+            fp.addI16((Short2)obj);
+            return;
+        }
+
+        if (obj instanceof Short3) {
+            fp.addI16((Short3)obj);
+            return;
+        }
+
+        if (obj instanceof Short4) {
+            fp.addI16((Short4)obj);
+            return;
+        }
+
+        if (obj instanceof Int2) {
+            fp.addI32((Int2)obj);
+            return;
+        }
+
+        if (obj instanceof Int3) {
+            fp.addI32((Int3)obj);
+            return;
+        }
+
+        if (obj instanceof Int4) {
+            fp.addI32((Int4)obj);
+            return;
+        }
+
+        if (obj instanceof Long2) {
+            fp.addI64((Long2)obj);
+            return;
+        }
+
+        if (obj instanceof Long3) {
+            fp.addI64((Long3)obj);
+            return;
+        }
+
+        if (obj instanceof Long4) {
+            fp.addI64((Long4)obj);
+            return;
+        }
+
+        if (obj instanceof Float2) {
+            fp.addF32((Float2)obj);
+            return;
+        }
+
+        if (obj instanceof Float3) {
+            fp.addF32((Float3)obj);
+            return;
+        }
+
+        if (obj instanceof Float4) {
+            fp.addF32((Float4)obj);
+            return;
+        }
+
+        if (obj instanceof Double2) {
+            fp.addF64((Double2)obj);
+            return;
+        }
+
+        if (obj instanceof Double3) {
+            fp.addF64((Double3)obj);
+            return;
+        }
+
+        if (obj instanceof Double4) {
+            fp.addF64((Double4)obj);
+            return;
+        }
+
+        if (obj instanceof Matrix2f) {
+            fp.addMatrix((Matrix2f)obj);
+            return;
+        }
+
+        if (obj instanceof Matrix3f) {
+            fp.addMatrix((Matrix3f)obj);
+            return;
+        }
+
+        if (obj instanceof Matrix4f) {
+            fp.addMatrix((Matrix4f)obj);
+            return;
+        }
+
+        if (obj instanceof BaseObj) {
+            fp.addObj((BaseObj)obj);
+            return;
+        }
+    }
+
+    private static int getPackedSize(Object obj) {
+        if (obj instanceof Boolean) {
+            return 1;
+        }
+
+        if (obj instanceof Byte) {
+            return 1;
+        }
+
+        if (obj instanceof Short) {
+            return 2;
+        }
+
+        if (obj instanceof Integer) {
+            return 4;
+        }
+
+        if (obj instanceof Long) {
+            return 8;
+        }
+
+        if (obj instanceof Float) {
+            return 4;
+        }
+
+        if (obj instanceof Double) {
+            return 8;
+        }
+
+        if (obj instanceof Byte2) {
+            return 2;
+        }
+
+        if (obj instanceof Byte3) {
+            return 3;
+        }
+
+        if (obj instanceof Byte4) {
+            return 4;
+        }
+
+        if (obj instanceof Short2) {
+            return 4;
+        }
+
+        if (obj instanceof Short3) {
+            return 6;
+        }
+
+        if (obj instanceof Short4) {
+            return 8;
+        }
+
+        if (obj instanceof Int2) {
+            return 8;
+        }
+
+        if (obj instanceof Int3) {
+            return 12;
+        }
+
+        if (obj instanceof Int4) {
+            return 16;
+        }
+
+        if (obj instanceof Long2) {
+            return 16;
+        }
+
+        if (obj instanceof Long3) {
+            return 24;
+        }
+
+        if (obj instanceof Long4) {
+            return 32;
+        }
+
+        if (obj instanceof Float2) {
+            return 8;
+        }
+
+        if (obj instanceof Float3) {
+            return 12;
+        }
+
+        if (obj instanceof Float4) {
+            return 16;
+        }
+
+        if (obj instanceof Double2) {
+            return 16;
+        }
+
+        if (obj instanceof Double3) {
+            return 24;
+        }
+
+        if (obj instanceof Double4) {
+            return 32;
+        }
+
+        if (obj instanceof Matrix2f) {
+            return 16;
+        }
+
+        if (obj instanceof Matrix3f) {
+            return 36;
+        }
+
+        if (obj instanceof Matrix4f) {
+            return 64;
+        }
+
+        if (obj instanceof BaseObj) {
+            if (RenderScript.sPointerSize == 8) {
+                return 32;
+            } else {
+                return 4;
+            }
+        }
+
+        return 0;
+    }
+
+    static FieldPacker createFieldPack(Object[] args) {
+        int len = 0;
+        for (Object arg : args) {
+            len += getPackedSize(arg);
+        }
+        FieldPacker fp = new FieldPacker(len);
+        for (Object arg : args) {
+            addToPack(fp, arg);
+        }
+        return fp;
+    }
+
     private final byte mData[];
     private int mPos;
     private int mLen;
diff --git a/rs/java/android/renderscript/RenderScript.java b/rs/java/android/renderscript/RenderScript.java
index f37519e..94aa857 100644
--- a/rs/java/android/renderscript/RenderScript.java
+++ b/rs/java/android/renderscript/RenderScript.java
@@ -313,6 +313,15 @@
           sizes, depClosures, depFieldIDs);
     }
 
+    native long rsnInvokeClosureCreate(long con, long invokeID, byte[] params,
+        long[] fieldIDs, long[] values, int[] sizes);
+    synchronized long nInvokeClosureCreate(long invokeID, byte[] params,
+        long[] fieldIDs, long[] values, int[] sizes) {
+      validate();
+      return rsnInvokeClosureCreate(mContext, invokeID, params, fieldIDs,
+          values, sizes);
+    }
+
     native void rsnClosureSetArg(long con, long closureID, int index,
       long value, int size);
     synchronized void nClosureSetArg(long closureID, int index, long value,
@@ -745,6 +754,12 @@
         return rsnScriptKernelIDCreate(mContext, sid, slot, sig);
     }
 
+    native long  rsnScriptInvokeIDCreate(long con, long sid, int slot);
+    synchronized long nScriptInvokeIDCreate(long sid, int slot) {
+        validate();
+        return rsnScriptInvokeIDCreate(mContext, sid, slot);
+    }
+
     native long  rsnScriptFieldIDCreate(long con, long sid, int slot);
     synchronized long nScriptFieldIDCreate(long sid, int slot) {
         validate();
diff --git a/rs/java/android/renderscript/Script.java b/rs/java/android/renderscript/Script.java
index eb1687a..d352130 100644
--- a/rs/java/android/renderscript/Script.java
+++ b/rs/java/android/renderscript/Script.java
@@ -66,6 +66,46 @@
     }
 
     /**
+     * @hide Pending API review
+     * InvokeID is an identifier for an invoke function. It is used
+     * as an identifier for ScriptGroup creation.
+     *
+     * This class should not be directly created. Instead use the method in the
+     * reflected or intrinsic code "getInvokeID_funcname()".
+     *
+     */
+    public static final class InvokeID extends BaseObj {
+        Script mScript;
+        int mSlot;
+        InvokeID(long id, RenderScript rs, Script s, int slot) {
+            super(id, rs);
+            mScript = s;
+            mSlot = slot;
+        }
+    }
+
+    private final SparseArray<InvokeID> mIIDs = new SparseArray<InvokeID>();
+    /**
+     * @hide Pending API review
+     * Only to be used by generated reflected classes.
+     */
+    protected InvokeID createInvokeID(int slot) {
+        InvokeID i = mIIDs.get(slot);
+        if (i != null) {
+            return i;
+        }
+
+        long id = mRS.nScriptInvokeIDCreate(getID(mRS), slot);
+        if (id == 0) {
+            throw new RSDriverException("Failed to create KernelID");
+        }
+
+        i = new InvokeID(id, mRS, this, slot);
+        mIIDs.put(slot, i);
+        return i;
+    }
+
+    /**
      * FieldID is an identifier for a Script + exported field pair. It is used
      * as an identifier for ScriptGroup creation.
      *
diff --git a/rs/java/android/renderscript/ScriptGroup2.java b/rs/java/android/renderscript/ScriptGroup2.java
index 366039e..113b896 100644
--- a/rs/java/android/renderscript/ScriptGroup2.java
+++ b/rs/java/android/renderscript/ScriptGroup2.java
@@ -34,6 +34,8 @@
     private Future mReturnFuture;
     private Map<Script.FieldID, Future> mGlobalFuture;
 
+    private FieldPacker mFP;
+
     private static final String TAG = "Closure";
 
     public Closure(long id, RenderScript rs) {
@@ -89,6 +91,44 @@
       setID(id);
     }
 
+    public Closure(RenderScript rs, Script.InvokeID invokeID,
+        Object[] args, Map<Script.FieldID, Object> globals) {
+      super(0, rs);
+      mFP = FieldPacker.createFieldPack(args);
+
+      mBindings = new HashMap<Script.FieldID, Object>();
+      mGlobalFuture = new HashMap<Script.FieldID, Future>();
+
+      int numValues = globals.size();
+
+      long[] fieldIDs = new long[numValues];
+      long[] values = new long[numValues];
+      int[] sizes = new int[numValues];
+      long[] depClosures = new long[numValues];
+      long[] depFieldIDs = new long[numValues];
+
+      int i = 0;
+      for (Map.Entry<Script.FieldID, Object> entry : globals.entrySet()) {
+        Object obj = entry.getValue();
+        Script.FieldID fieldID = entry.getKey();
+        fieldIDs[i] = fieldID.getID(rs);
+        if (obj instanceof UnboundValue) {
+          UnboundValue unbound = (UnboundValue)obj;
+          unbound.addReference(this, fieldID);
+        } else {
+          // TODO(yangni): Verify obj not a future.
+          retrieveValueAndDependenceInfo(rs, i, obj, values,
+              sizes, depClosures, depFieldIDs);
+        }
+        i++;
+      }
+
+      long id = rs.nInvokeClosureCreate(invokeID.getID(rs), mFP.getData(), fieldIDs,
+          values, sizes);
+
+      setID(id);
+    }
+
     private static void retrieveValueAndDependenceInfo(RenderScript rs,
         int index, Object obj, long[] values, int[] sizes, long[] depClosures,
         long[] depFieldIDs) {
@@ -99,6 +139,12 @@
         depClosures[index] = f.getClosure().getID(rs);
         Script.FieldID fieldID = f.getFieldID();
         depFieldIDs[index] = fieldID != null ? fieldID.getID(rs) : 0;
+        if (obj == null) {
+          // Value is originally created by the owner closure
+          values[index] = 0;
+          sizes[index] = 0;
+          return;
+        }
       } else {
         depClosures[index] = 0;
         depFieldIDs[index] = 0;
@@ -121,6 +167,10 @@
       Future f = mGlobalFuture.get(field);
 
       if (f == null) {
+        // If the field is not bound to this closure, this will return a future
+        // without an associated value (reference). So this is not working for
+        // cross-module (cross-script) linking in this case where a field not
+        // explicitly bound.
         f = new Future(this, field, mBindings.get(field));
         mGlobalFuture.put(field, f);
       }
@@ -160,7 +210,6 @@
           size = 8;
         }
       }
-
       public long value;
       public int size;
     }
@@ -297,6 +346,13 @@
       return c;
     }
 
+    public Closure addInvoke(Script.InvokeID invoke, Object[] args,
+        Map<Script.FieldID, Object> globalBindings) {
+      Closure c = new Closure(mRS, invoke, args, globalBindings);
+      mClosures.add(c);
+      return c;
+    }
+
     public UnboundValue addInput() {
       UnboundValue unbound = new UnboundValue();
       mInputs.add(unbound);
diff --git a/rs/jni/android_renderscript_RenderScript.cpp b/rs/jni/android_renderscript_RenderScript.cpp
index cbcba39..7387af0 100644
--- a/rs/jni/android_renderscript_RenderScript.cpp
+++ b/rs/jni/android_renderscript_RenderScript.cpp
@@ -242,6 +242,37 @@
       depFieldIDs, (size_t)depFieldIDs_length);
 }
 
+static jlong
+nInvokeClosureCreate(JNIEnv *_env, jobject _this, jlong con, jlong invokeID,
+                     jbyteArray paramArray, jlongArray fieldIDArray, jlongArray valueArray,
+                     jintArray sizeArray) {
+  jbyte* jParams = _env->GetByteArrayElements(paramArray, nullptr);
+  jsize jParamLength = _env->GetArrayLength(paramArray);
+
+  jlong* jFieldIDs = _env->GetLongArrayElements(fieldIDArray, nullptr);
+  jsize fieldIDs_length = _env->GetArrayLength(fieldIDArray);
+  RsScriptFieldID* fieldIDs =
+      (RsScriptFieldID*)alloca(sizeof(RsScriptFieldID) * fieldIDs_length);
+  for (int i = 0; i< fieldIDs_length; i++) {
+    fieldIDs[i] = (RsScriptFieldID)jFieldIDs[i];
+  }
+
+  jlong* jValues = _env->GetLongArrayElements(valueArray, nullptr);
+  jsize values_length = _env->GetArrayLength(valueArray);
+  uintptr_t* values = (uintptr_t*)alloca(sizeof(uintptr_t) * values_length);
+  for (int i = 0; i < values_length; i++) {
+    values[i] = (uintptr_t)jValues[i];
+  }
+
+  jint* sizes = _env->GetIntArrayElements(sizeArray, nullptr);
+  jsize sizes_length = _env->GetArrayLength(sizeArray);
+
+  return (jlong)(uintptr_t)rsInvokeClosureCreate(
+      (RsContext)con, (RsScriptInvokeID)invokeID, jParams, jParamLength,
+      fieldIDs, (size_t)fieldIDs_length, values, (size_t)values_length,
+      (size_t*)sizes, (size_t)sizes_length);
+}
+
 static void
 nClosureSetArg(JNIEnv *_env, jobject _this, jlong con, jlong closureID,
                jint index, jlong value, jint size) {
@@ -1488,6 +1519,16 @@
 }
 
 static jlong
+nScriptInvokeIDCreate(JNIEnv *_env, jobject _this, jlong con, jlong sid, jint slot)
+{
+    if (kLogApi) {
+        ALOGD("nScriptInvokeIDCreate, con(%p) script(%p), slot(%i), sig(%i)", (RsContext)con,
+              (void *)sid, slot);
+    }
+    return (jlong)(uintptr_t)rsScriptInvokeIDCreate((RsContext)con, (RsScript)sid, slot);
+}
+
+static jlong
 nScriptFieldIDCreate(JNIEnv *_env, jobject _this, jlong con, jlong sid, jint slot)
 {
     if (kLogApi) {
@@ -1935,6 +1976,7 @@
 {"rsnContextResume",                 "(J)V",                                  (void*)nContextResume },
 {"rsnContextSendMessage",            "(JI[I)V",                               (void*)nContextSendMessage },
 {"rsnClosureCreate",                 "(JJJ[J[J[I[J[J)J",                      (void*)nClosureCreate },
+{"rsnInvokeClosureCreate",           "(JJ[B[J[J[I)J",                         (void*)nInvokeClosureCreate },
 {"rsnClosureSetArg",                 "(JJIJI)V",                              (void*)nClosureSetArg },
 {"rsnClosureSetGlobal",              "(JJJJI)V",                              (void*)nClosureSetGlobal },
 {"rsnAssignName",                    "(JJ[B)V",                               (void*)nAssignName },
@@ -2009,6 +2051,7 @@
 {"rsnScriptCCreate",                 "(JLjava/lang/String;Ljava/lang/String;[BI)J",  (void*)nScriptCCreate },
 {"rsnScriptIntrinsicCreate",         "(JIJ)J",                                (void*)nScriptIntrinsicCreate },
 {"rsnScriptKernelIDCreate",          "(JJII)J",                               (void*)nScriptKernelIDCreate },
+{"rsnScriptInvokeIDCreate",          "(JJI)J",                                (void*)nScriptInvokeIDCreate },
 {"rsnScriptFieldIDCreate",           "(JJI)J",                                (void*)nScriptFieldIDCreate },
 {"rsnScriptGroupCreate",             "(J[J[J[J[J[J)J",                        (void*)nScriptGroupCreate },
 {"rsnScriptGroup2Create",            "(JLjava/lang/String;[J)J",               (void*)nScriptGroup2Create },