Improve RS documentation.

bug 8570568
Change-Id: I465fcc8ec3e2cc892dc3cb0067aacf5224338102
diff --git a/graphics/java/android/renderscript/ScriptIntrinsicBlend.java b/graphics/java/android/renderscript/ScriptIntrinsicBlend.java
index 65c69c0..0e05bc8 100644
--- a/graphics/java/android/renderscript/ScriptIntrinsicBlend.java
+++ b/graphics/java/android/renderscript/ScriptIntrinsicBlend.java
@@ -18,8 +18,7 @@
 
 
 /**
- * Intrinsic kernels for blending two buffers. Each blend function is a separate
- * kernel to make it easy to change between blend modes.
+ * Intrinsic kernels for blending two {@link android.renderscript.Allocation} objects.
  **/
 public class ScriptIntrinsicBlend extends ScriptIntrinsic {
     ScriptIntrinsicBlend(int id, RenderScript rs) {
@@ -27,11 +26,10 @@
     }
 
     /**
-     * Supported elements types are uchar4
+     * Supported elements types are {@link Element#U8_4}
      *
-     *
-     * @param rs
-     * @param e
+     * @param rs The RenderScript context
+     * @param e Element type for inputs and outputs
      *
      * @return ScriptIntrinsicBlend
      */
@@ -53,7 +51,7 @@
     }
 
     /**
-     * dst = {0, 0, 0, 0}
+     * Sets dst = {0, 0, 0, 0}
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -73,7 +71,7 @@
 
 
     /**
-     * dst = src
+     * Sets dst = src
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -92,8 +90,9 @@
     }
 
     /**
-     * dst = dst
-     * This is a NOP
+     * Sets dst = dst
+     *
+     * This is a NOP.
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -112,7 +111,7 @@
     }
 
     /**
-     * dst = src + dst * (1.0 - src.a)
+     * Sets dst = src + dst * (1.0 - src.a)
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -131,7 +130,7 @@
     }
 
     /**
-     * dst = dst + src * (1.0 - dst.a)
+     * Sets dst = dst + src * (1.0 - dst.a)
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -150,7 +149,7 @@
     }
 
     /**
-     * dst = src * dst.a
+     * Sets dst = src * dst.a
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -169,7 +168,7 @@
     }
 
     /**
-     * dst = dst * src.a
+     * Sets dst = dst * src.a
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -188,7 +187,7 @@
     }
 
     /**
-     * dst = src * (1.0 - dst.a)
+     * Sets dst = src * (1.0 - dst.a)
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -207,7 +206,7 @@
     }
 
     /**
-     * dst = dst * (1.0 - src.a)
+     * Sets dst = dst * (1.0 - src.a)
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -266,7 +265,7 @@
     }
 
     /**
-     * dst = {src.r ^ dst.r, src.g ^ dst.g, src.b ^ dst.b, src.a ^ dst.a}
+     * Sets dst = {src.r ^ dst.r, src.g ^ dst.g, src.b ^ dst.b, src.a ^ dst.a}
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -295,7 +294,7 @@
     }
 */
     /**
-     * dst = src * dst
+     * Sets dst = src * dst
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -391,7 +390,7 @@
     }
 */
     /**
-     * dst = min(src + dst, 1.0)
+     * Sets dst = min(src + dst, 1.0)
      *
      * @param ain The source buffer
      * @param aout The destination buffer
@@ -410,7 +409,7 @@
     }
 
     /**
-     * dst = max(dst - src, 0.0)
+     * Sets dst = max(dst - src, 0.0)
      *
      * @param ain The source buffer
      * @param aout The destination buffer