fix build break

Change-Id: I51603e7c645ce7aaa632e88bdc44578094785fdd
diff --git a/tests/RenderScriptTests/ImageProcessing/src/com/android/rs/image/blend.rs b/tests/RenderScriptTests/ImageProcessing/src/com/android/rs/image/blend.rs
new file mode 100644
index 0000000..87b56f7
--- /dev/null
+++ b/tests/RenderScriptTests/ImageProcessing/src/com/android/rs/image/blend.rs
@@ -0,0 +1,24 @@
+// Copyright (C) 2011 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.
+
+#pragma version(1)
+#pragma rs java_package_name(com.android.rs.image)
+
+uchar alpha = 0x0;
+
+void setImageAlpha(uchar4 *v_out, uint32_t x, uint32_t y) {
+  v_out->rgba = convert_uchar4((convert_uint4(v_out->rgba) * alpha) >> (uint4)8);
+  v_out->a = alpha;
+}
+