Add convertRGBAtoA.

Change-Id: I358bc0517480883c470df51189f46fb238fde101

1 files changed, 22 insertions, 0 deletions

diff --git a/src/com/android/gallery3d/filtershow/filters/grey.rs b/src/com/android/gallery3d/filtershow/filters/grey.rs
new file mode 100644
index 000000000..e01880360
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/filters/grey.rs
@@ -0,0 +1,22 @@
+  /*
+ * Copyright (C) 2013 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.gallery3d.filtershow.filters)
+
+uchar __attribute__((kernel)) RGBAtoA(uchar4 in) {
+    return in.r;
+}