Unhide new RS APIs.

This exposes the fast path handling of YUV data.

bug 8566866

Change-Id: Iaa3700100db61dd51d16d80ea8ae22f2dcc41bb0
diff --git a/graphics/java/android/renderscript/ScriptIntrinsic3DLUT.java b/graphics/java/android/renderscript/ScriptIntrinsic3DLUT.java
index 3e58b87..86f37d8 100644
--- a/graphics/java/android/renderscript/ScriptIntrinsic3DLUT.java
+++ b/graphics/java/android/renderscript/ScriptIntrinsic3DLUT.java
@@ -20,7 +20,11 @@
 
 /**
  *
- * @hide
+ * Intrinsic for converting RGB to RGBA by using a 3D lookup table.  The
+ * incoming r,g,b values are use as normalized x,y,z coordinates into a 3D
+ * allocation.  The 8 nearest values are sampled and linearly interpolated.  The
+ * result is placed in the output.
+ *
  **/
 public final class ScriptIntrinsic3DLUT extends ScriptIntrinsic {
     private Allocation mLUT;