Update documentation about copyTo and copyFrom.

Bug: 23159764
Bug: 26862970

  - Add detailed description of AutoPadding
  - Add comments to all the copy related APIs.
  - Fix typos in the comments.

Change-Id: I2d045e0d90efd94f1407f88d3e35bcd42ea93fb9
(cherry picked from commit 3231e8e0220614f7b1628493da5f276f19faab7c)
diff --git a/rs/java/android/renderscript/Allocation.java b/rs/java/android/renderscript/Allocation.java
index 7619e79..4cd2354 100644
--- a/rs/java/android/renderscript/Allocation.java
+++ b/rs/java/android/renderscript/Allocation.java
@@ -297,13 +297,50 @@
     }
 
     /**
-     * Enable/Disable AutoPadding for Vec3 Elements.
+     * Specifies the mapping between the Allocation's cells and an array's elements
+     * when data is copied from the Allocation to the array, or vice-versa.
      *
-     * <p> Vec3 Elements, such as {@link Element#U8_3} are treated as Vec4 Elements
-     * with the fourth vector element used as padding. Enabling the AutoPadding feature
-     * will automatically add/remove the padding when you copy to/from an Allocation
-     * with a Vec3 Element.
-     * <p> By default: Disabled.
+     * Only applies to an Allocation whose Element is a vector of length 3 (such as
+     * {@link Element#U8_3} or {@link Element#RGB_888}). Enabling this feature may make
+     * copying data from the Allocation to an array or vice-versa less efficient.
+     *
+     * <p> Vec3 Element cells are stored in an Allocation as Vec4 Element cells with
+     * the same {@link android.renderscript.Element.DataType}, with the fourth vector
+     * component treated as padding. When this feature is enabled, only the data components,
+     * i.e. the first 3 vector components of each cell, will be mapped between the array
+     * and the Allocation. When disabled, explicit mapping of the padding components
+     * is required, as described in the following example.
+     *
+     * <p> For example, when copying an integer array to an Allocation of two {@link
+     * Element#I32_3} cells using {@link #copyFrom(int[])}:
+     * <p> When disabled:
+     *     The array must have at least 8 integers, with the first 4 integers copied
+     *     to the first cell of the Allocation, and the next 4 integers copied to
+     *     the second cell. The 4th and 8th integers are mapped as the padding components.
+     *
+     * <p> When enabled:
+     *     The array just needs to have at least 6 integers, with the first 3 integers
+     *     copied to the the first cell as data components, and the next 3 copied to
+     *     the second cell. There is no mapping for the padding components.
+     *
+     * <p> Similarly, when copying a byte array to an Allocation of two {@link
+     * Element#I32_3} cells, using {@link #copyFromUnchecked(int[])}:
+     * <p> When disabled:
+     *     The array must have at least 32 bytes, with the first 16 bytes copied
+     *     to the first cell of the Allocation, and the next 16 bytes copied to
+     *     the second cell. The 13th-16th and 29th-32nd bytes are mapped as padding
+     *     components.
+     *
+     * <p> When enabled:
+     *     The array just needs to have at least 24 bytes, with the first 12 bytes copied
+     *     to the first cell of the Allocation, and the next 12 bytes copied to
+     *     the second cell. There is no mapping for the padding components.
+     *
+     * <p> Similar to copying data to an Allocation from an array, when copying data from an
+     * Allocation to an array, the padding components for Vec3 Element cells will not be
+     * copied/mapped to the array if AutoPadding is enabled.
+     *
+     * <p> Default: Disabled.
      *
      * @param useAutoPadding True: enable AutoPadding; False: disable AutoPadding
      *
@@ -665,12 +702,27 @@
         }
     }
 
+
     /**
      * Copy into this Allocation from an array. This method does not guarantee
      * that the Allocation is compatible with the input buffer; it copies memory
      * without reinterpretation.
      *
-     * @param array The source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param array The source array
      */
     public void copyFromUnchecked(Object array) {
         try {
@@ -687,7 +739,21 @@
      * that the Allocation is compatible with the input buffer; it copies memory
      * without reinterpretation.
      *
-     * @param d the source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param d the source array
      */
     public void copyFromUnchecked(int[] d) {
         copyFromUnchecked(d, Element.DataType.SIGNED_32, d.length);
@@ -698,7 +764,21 @@
      * that the Allocation is compatible with the input buffer; it copies memory
      * without reinterpretation.
      *
-     * @param d the source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param d the source array
      */
     public void copyFromUnchecked(short[] d) {
         copyFromUnchecked(d, Element.DataType.SIGNED_16, d.length);
@@ -709,7 +789,21 @@
      * that the Allocation is compatible with the input buffer; it copies memory
      * without reinterpretation.
      *
-     * @param d the source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param d the source array
      */
     public void copyFromUnchecked(byte[] d) {
         copyFromUnchecked(d, Element.DataType.SIGNED_8, d.length);
@@ -720,7 +814,21 @@
      * that the Allocation is compatible with the input buffer; it copies memory
      * without reinterpretation.
      *
-     * @param d the source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param d the source array
      */
     public void copyFromUnchecked(float[] d) {
         copyFromUnchecked(d, Element.DataType.FLOAT_32, d.length);
@@ -733,7 +841,21 @@
      * android.renderscript.Element} does not match the array's
      * primitive type.
      *
-     * @param array The source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param array The source array
      */
     public void copyFrom(Object array) {
         try {
@@ -748,9 +870,24 @@
     /**
      * Copy into this Allocation from an array.  This variant is type checked
      * and will generate exceptions if the Allocation's {@link
-     * android.renderscript.Element} is not a 32 bit integer type.
+     * android.renderscript.Element} is not a 32 bit integer nor a vector of 32 bit
+     * integers {@link android.renderscript.Element.DataType}.
      *
-     * @param d the source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param d the source array
      */
     public void copyFrom(int[] d) {
         validateIsInt32();
@@ -760,9 +897,24 @@
     /**
      * Copy into this Allocation from an array.  This variant is type checked
      * and will generate exceptions if the Allocation's {@link
-     * android.renderscript.Element} is not a 16 bit integer type.
+     * android.renderscript.Element} is not a 16 bit integer nor a vector of 16 bit
+     * integers {@link android.renderscript.Element.DataType}.
      *
-     * @param d the source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param d the source array
      */
     public void copyFrom(short[] d) {
         validateIsInt16OrFloat16();
@@ -772,9 +924,24 @@
     /**
      * Copy into this Allocation from an array.  This variant is type checked
      * and will generate exceptions if the Allocation's {@link
-     * android.renderscript.Element} is not an 8 bit integer type.
+     * android.renderscript.Element} is not an 8 bit integer nor a vector of 8 bit
+     * integers {@link android.renderscript.Element.DataType}.
      *
-     * @param d the source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param d the source array
      */
     public void copyFrom(byte[] d) {
         validateIsInt8();
@@ -784,9 +951,24 @@
     /**
      * Copy into this Allocation from an array.  This variant is type checked
      * and will generate exceptions if the Allocation's {@link
-     * android.renderscript.Element} is not a 32 bit float type.
+     * android.renderscript.Element} is neither a 32 bit float nor a vector of
+     * 32 bit floats {@link android.renderscript.Element.DataType}.
      *
-     * @param d the source data array
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
+     *
+     * @param d the source array
      */
     public void copyFrom(float[] d) {
         validateIsFloat32();
@@ -972,13 +1154,28 @@
         }
     }
 
+
     /**
-     * Copy an array into part of this Allocation.  This method does not
+     * Copy an array into a 1D region of this Allocation.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param array The source data array
+     * @param array The source array
      */
     public void copy1DRangeFromUnchecked(int off, int count, Object array) {
         copy1DRangeFromUnchecked(off, count, array,
@@ -987,62 +1184,132 @@
     }
 
     /**
-     * Copy an array into part of this Allocation.  This method does not
+     * Copy an array into a 1D region of this Allocation.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeFromUnchecked(int off, int count, int[] d) {
         copy1DRangeFromUnchecked(off, count, (Object)d, Element.DataType.SIGNED_32, d.length);
     }
 
     /**
-     * Copy an array into part of this Allocation.  This method does not
+     * Copy an array into a 1D region of this Allocation.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeFromUnchecked(int off, int count, short[] d) {
         copy1DRangeFromUnchecked(off, count, (Object)d, Element.DataType.SIGNED_16, d.length);
     }
 
     /**
-     * Copy an array into part of this Allocation.  This method does not
+     * Copy an array into a 1D region of this Allocation.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeFromUnchecked(int off, int count, byte[] d) {
         copy1DRangeFromUnchecked(off, count, (Object)d, Element.DataType.SIGNED_8, d.length);
     }
 
     /**
-     * Copy an array into part of this Allocation.  This method does not
+     * Copy an array into a 1D region of this Allocation.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeFromUnchecked(int off, int count, float[] d) {
         copy1DRangeFromUnchecked(off, count, (Object)d, Element.DataType.FLOAT_32, d.length);
     }
 
-
     /**
-     * Copy an array into part of this Allocation.  This variant is type checked
-     * and will generate exceptions if the Allocation type does not
-     * match the component type of the array passed in.
+     * Copy an array into a 1D region of this Allocation.  This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} does not match the component type
+     * of the array passed in.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param array The source data array.
+     * @param array The source array.
      */
     public void copy1DRangeFrom(int off, int count, Object array) {
         copy1DRangeFromUnchecked(off, count, array,
@@ -1051,13 +1318,28 @@
     }
 
     /**
-     * Copy an array into part of this Allocation.  This variant is type checked
-     * and will generate exceptions if the Allocation type is not a 32 bit
-     * integer type.
+     * Copy an array into a 1D region of this Allocation.  This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is not an 32 bit integer nor a vector of 32 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeFrom(int off, int count, int[] d) {
         validateIsInt32();
@@ -1065,13 +1347,28 @@
     }
 
     /**
-     * Copy an array into part of this Allocation.  This variant is type checked
-     * and will generate exceptions if the Allocation type is not a 16 bit
-     * integer type.
+     * Copy an array into a 1D region of this Allocation.  This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is not an 16 bit integer nor a vector of 16 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeFrom(int off, int count, short[] d) {
         validateIsInt16OrFloat16();
@@ -1079,13 +1376,28 @@
     }
 
     /**
-     * Copy an array into part of this Allocation.  This variant is type checked
-     * and will generate exceptions if the Allocation type is not an 8 bit
-     * integer type.
+     * Copy an array into a 1D region of this Allocation.  This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is not an 8 bit integer nor a vector of 8 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeFrom(int off, int count, byte[] d) {
         validateIsInt8();
@@ -1093,13 +1405,28 @@
     }
 
     /**
-     * Copy an array into part of this Allocation.  This variant is type checked
-     * and will generate exceptions if the Allocation type is not a 32 bit float
-     * type.
+     * Copy an array into a 1D region of this Allocation.  This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is neither a 32 bit float nor a vector of
+     * 32 bit floats {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array.
+     * @param d the source array.
      */
     public void copy1DRangeFrom(int off, int count, float[] d) {
         validateIsFloat32();
@@ -1172,7 +1499,23 @@
 
     /**
      * Copy from an array into a rectangular region in this Allocation.  The
-     * array is assumed to be tightly packed.
+     * array is assumed to be tightly packed. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} does not match the input data type.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to update in this Allocation
      * @param yoff Y offset of the region to update in this Allocation
@@ -1193,7 +1536,24 @@
 
     /**
      * Copy from an array into a rectangular region in this Allocation.  The
-     * array is assumed to be tightly packed.
+     * array is assumed to be tightly packed. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is not an 8 bit integer nor a vector of 8 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to update in this Allocation
      * @param yoff Y offset of the region to update in this Allocation
@@ -1209,7 +1569,24 @@
 
     /**
      * Copy from an array into a rectangular region in this Allocation.  The
-     * array is assumed to be tightly packed.
+     * array is assumed to be tightly packed. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is not a 16 bit integer nor a vector of 16 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to update in this Allocation
      * @param yoff Y offset of the region to update in this Allocation
@@ -1225,7 +1602,24 @@
 
     /**
      * Copy from an array into a rectangular region in this Allocation.  The
-     * array is assumed to be tightly packed.
+     * array is assumed to be tightly packed. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is not a 32 bit integer nor a vector of 32 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to update in this Allocation
      * @param yoff Y offset of the region to update in this Allocation
@@ -1241,7 +1635,24 @@
 
     /**
      * Copy from an array into a rectangular region in this Allocation.  The
-     * array is assumed to be tightly packed.
+     * array is assumed to be tightly packed. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is neither a 32 bit float nor a vector of
+     * 32 bit floats {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to update in this Allocation
      * @param yoff Y offset of the region to update in this Allocation
@@ -1364,8 +1775,24 @@
     }
 
     /**
-     * Copy a rectangular region from the array into the allocation.
-     * The array is assumed to be tightly packed.
+     * Copy from an array into a 3D region in this Allocation.  The
+     * array is assumed to be tightly packed. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} does not match the input data type.
+     *
+     * <p> The size of the region is: w * h * d * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to update in this Allocation
      * @param yoff Y offset of the region to update in this Allocation
@@ -1455,10 +1882,23 @@
     }
 
     /**
-     * Copy from the Allocation into an array.  The array must be at
-     * least as large as the Allocation.  The
-     * {@link android.renderscript.Element} must match the component
-     * type of the array passed in.
+     * Copy from the Allocation into an array. The method is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} does not match the input data type.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells will be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
      *
      * @param array The array to be set from the Allocation.
      */
@@ -1468,9 +1908,24 @@
     }
 
     /**
-     * Copy from the Allocation into a byte array.  The array must be at least
-     * as large as the Allocation.  The allocation must be of an 8 bit integer
-     * {@link android.renderscript.Element} type.
+     * Copy from the Allocation into a byte array. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is neither an 8 bit integer nor a vector of 8 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells will be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
      *
      * @param d The array to be set from the Allocation.
      */
@@ -1480,9 +1935,24 @@
     }
 
     /**
-     * Copy from the Allocation into a short array.  The array must be at least
-     * as large as the Allocation.  The allocation must be of an 16 bit integer
-     * {@link android.renderscript.Element} type.
+     * Copy from the Allocation into a short array. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is not a 16 bit integer nor a vector of 16 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells will be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
      *
      * @param d The array to be set from the Allocation.
      */
@@ -1492,9 +1962,24 @@
     }
 
     /**
-     * Copy from the Allocation into a int array.  The array must be at least as
-     * large as the Allocation.  The allocation must be of an 32 bit integer
-     * {@link android.renderscript.Element} type.
+     * Copy from the Allocation into a int array. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is not a 32 bit integer nor a vector of 32 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells will be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
      *
      * @param d The array to be set from the Allocation.
      */
@@ -1504,9 +1989,24 @@
     }
 
     /**
-     * Copy from the Allocation into a float array.  The array must be at least
-     * as large as the Allocation.  The allocation must be of an 32 bit float
-     * {@link android.renderscript.Element} type.
+     * Copy from the Allocation into a float array. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is neither a 32 bit float nor a vector of
+     * 32 bit floats {@link android.renderscript.Element.DataType}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the Allocation {@link
+     * #getBytesSize getBytesSize()}.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells will be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the Allocation {@link #getBytesSize getBytesSize()}. The padding bytes for
+     * the cells must not be part of the array.
      *
      * @param d The array to be set from the Allocation.
      */
@@ -1609,12 +2109,26 @@
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
+     * Copy a 1D region of this Allocation into an array.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param array The dest data array
+     * @param array The dest array
      */
     public void copy1DRangeToUnchecked(int off, int count, Object array) {
         copy1DRangeToUnchecked(off, count, array,
@@ -1623,62 +2137,132 @@
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
+     * Copy a 1D region of this Allocation into an array.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeToUnchecked(int off, int count, int[] d) {
         copy1DRangeToUnchecked(off, count, (Object)d, Element.DataType.SIGNED_32, d.length);
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
+     * Copy a 1D region of this Allocation into an array.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeToUnchecked(int off, int count, short[] d) {
         copy1DRangeToUnchecked(off, count, (Object)d, Element.DataType.SIGNED_16, d.length);
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
+     * Copy a 1D region of this Allocation into an array.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeToUnchecked(int off, int count, byte[] d) {
         copy1DRangeToUnchecked(off, count, (Object)d, Element.DataType.SIGNED_8, d.length);
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
+     * Copy a 1D region of this Allocation into an array.  This method does not
      * guarantee that the Allocation is compatible with the input buffer.
      *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
+     *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeToUnchecked(int off, int count, float[] d) {
         copy1DRangeToUnchecked(off, count, (Object)d, Element.DataType.FLOAT_32, d.length);
     }
 
-
     /**
-     * Copy part of this Allocation into an array.  This method does not
-     * and will generate exceptions if the Allocation type does not
-     * match the component type of the array passed in.
+     * Copy a 1D region of this Allocation into an array.  This method is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} does not match the component type
+     * of the array passed in.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param array The source data array.
+     * @param array The source array.
      */
     public void copy1DRangeTo(int off, int count, Object array) {
         copy1DRangeToUnchecked(off, count, array,
@@ -1687,13 +2271,28 @@
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
-     * and will generate exceptions if the Allocation type is not a 32 bit
-     * integer type.
+     * Copy a 1D region of this Allocation into an array. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is neither a 32 bit integer nor a vector of 32 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeTo(int off, int count, int[] d) {
         validateIsInt32();
@@ -1701,13 +2300,28 @@
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
-     * and will generate exceptions if the Allocation type is not a 16 bit
-     * integer type.
+     * Copy a 1D region of this Allocation into an array. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is neither a 16 bit integer nor a vector of 16 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeTo(int off, int count, short[] d) {
         validateIsInt16OrFloat16();
@@ -1715,13 +2329,28 @@
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
-     * and will generate exceptions if the Allocation type is not an 8 bit
-     * integer type.
+     * Copy a 1D region of this Allocation into an array. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is neither an 8 bit integer nor a vector of 8 bit
+     * integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array
+     * @param d the source array
      */
     public void copy1DRangeTo(int off, int count, byte[] d) {
         validateIsInt8();
@@ -1729,13 +2358,28 @@
     }
 
     /**
-     * Copy part of this Allocation into an array.  This method does not
-     * and will generate exceptions if the Allocation type is not a 32 bit float
-     * type.
+     * Copy a 1D region of this Allocation into an array. This variant is type checked
+     * and will generate exceptions if the Allocation's {@link
+     * android.renderscript.Element} is neither a 32 bit float nor a vector of
+     * 32 bit floats {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: count * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param off The offset of the first element to be copied.
      * @param count The number of elements to be copied.
-     * @param d the source data array.
+     * @param d the source array.
      */
     public void copy1DRangeTo(int off, int count, float[] d) {
         validateIsFloat32();
@@ -1772,7 +2416,24 @@
     }
 
     /**
-     * Copy from a rectangular region in this Allocation into an array.
+     * Copy from a rectangular region in this Allocation into an array. This
+     * method is type checked and will generate exceptions if the Allocation's
+     * {@link android.renderscript.Element} does not match the component type
+     * of the array passed in.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to copy in this Allocation
      * @param yoff Y offset of the region to copy in this Allocation
@@ -1787,7 +2448,24 @@
     }
 
     /**
-     * Copy from a rectangular region in this Allocation into an array.
+     * Copy from a rectangular region in this Allocation into an array. This
+     * variant is type checked and will generate exceptions if the Allocation's
+     * {@link android.renderscript.Element} is neither an 8 bit integer nor a vector
+     * of 8 bit integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to copy in this Allocation
      * @param yoff Y offset of the region to copy in this Allocation
@@ -1802,7 +2480,24 @@
     }
 
     /**
-     * Copy from a rectangular region in this Allocation into an array.
+     * Copy from a rectangular region in this Allocation into an array. This
+     * variant is type checked and will generate exceptions if the Allocation's
+     * {@link android.renderscript.Element} is neither a 16 bit integer nor a vector
+     * of 16 bit integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to copy in this Allocation
      * @param yoff Y offset of the region to copy in this Allocation
@@ -1817,7 +2512,24 @@
     }
 
     /**
-     * Copy from a rectangular region in this Allocation into an array.
+     * Copy from a rectangular region in this Allocation into an array. This
+     * variant is type checked and will generate exceptions if the Allocation's
+     * {@link android.renderscript.Element} is neither a 32 bit integer nor a vector
+     * of 32 bit integers {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to copy in this Allocation
      * @param yoff Y offset of the region to copy in this Allocation
@@ -1832,7 +2544,24 @@
     }
 
     /**
-     * Copy from a rectangular region in this Allocation into an array.
+     * Copy from a rectangular region in this Allocation into an array. This
+     * variant is type checked and will generate exceptions if the Allocation's
+     * {@link android.renderscript.Element} is neither a 32 bit float nor a vector
+     * of 32 bit floats {@link android.renderscript.Element.DataType}.
+     *
+     * <p> The size of the region is: w * h * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to copy in this Allocation
      * @param yoff Y offset of the region to copy in this Allocation
@@ -1848,7 +2577,8 @@
 
 
     /**
-     * Copy from a rectangular region in this Allocation into an array.
+     * Copy from a 3D region in this Allocation into an array. This method does
+     * not guarantee that the Allocation is compatible with the input buffer.
      * The array is assumed to be tightly packed.
      *
      * The data type of the array is not required to be the same as
@@ -1883,7 +2613,24 @@
     }
 
     /*
-     * Copy from a rectangular region in this Allocation into an array.
+     * Copy from a 3D region in this Allocation into an array. This
+     * method is type checked and will generate exceptions if the Allocation's
+     * {@link android.renderscript.Element} does not match the component type
+     * of the array passed in.
+     *
+     * <p> The size of the region is: w * h * d * {@link #getElement}.{@link
+     * Element#getBytesSize}.
+     *
+     * <p> If the Allocation does not have Vec3 Elements, then the size of the
+     * array in bytes must be at least the size of the region.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is disabled, then the size of the array in bytes must be at least the size
+     * of the region. The padding bytes for the cells must be part of the array.
+     *
+     * <p> If the Allocation has Vec3 Elements and {@link #setAutoPadding AutoPadding}
+     * is enabled, then the size of the array in bytes must be at least 3/4 the size
+     * of the region. The padding bytes for the cells must not be part of the array.
      *
      * @param xoff X offset of the region to copy in this Allocation
      * @param yoff Y offset of the region to copy in this Allocation
@@ -2094,7 +2841,7 @@
     /**
      * @hide
      * Gets or creates a ByteBuffer that contains the raw data of the current Allocation.
-     * If the Allocation is created with USAGE_IO_INPUT, the returned ByteBuffer
+     * <p> If the Allocation is created with USAGE_IO_INPUT, the returned ByteBuffer
      * would contain the up-to-date data as READ ONLY.
      * For a 2D or 3D Allocation, the raw data maybe padded so that each row of
      * the Allocation has certain alignment. The size of each row including padding,
@@ -2171,7 +2918,7 @@
      * Creates a new Allocation with the given {@link
      * android.renderscript.Allocation}. The same data layout of
      * the input Allocation will be applied.
-     * If the input allocation is of usage: USAGE_IO_INPUT, the created
+     * <p> If the input allocation is of usage: USAGE_IO_INPUT, the created
      * Allocation will be sharing the same BufferQueue.
      *
      * @param rs Context to which the allocation will belong.