Updated browseable samples for april push

Change-Id: Idd8cc6b7c43ab93f05f0a5d69d5379631721d185

samples/browseable/BasicRenderScript/src/rs/saturation.rs

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2014 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.example.android.basicrenderscript)
+#pragma rs_fp_relaxed
+
+const static float3 gMonoMult = {0.299f, 0.587f, 0.114f};
+
+float saturationValue = 0.f;
+
+/*
+RenderScript kernel that performs saturation manipulation.
+*/
+uchar4 __attribute__((kernel)) saturation(uchar4 in)
+{
+    float4 f4 = rsUnpackColor8888(in);
+    float3 result = dot(f4.rgb, gMonoMult);
+    result = mix( result, f4.rgb, saturationValue );
+
+    return rsPackColorTo8888(result);
+}
+