Allocation copy functions.

Change-Id: Idce6d44a4f4bb2e399284a40c0f90dc1bff912fd
diff --git a/scriptc/rs_math.rsh b/scriptc/rs_math.rsh
index 6e3cfdb..584317e 100644
--- a/scriptc/rs_math.rsh
+++ b/scriptc/rs_math.rsh
@@ -136,6 +136,58 @@
 extern uint32_t __attribute__((overloadable))
     rsAllocationGetDimFaces(rs_allocation);
 
+/**
+ * Copy part of an allocation from another allocation.
+ *
+ * @param dstAlloc Allocation to copy data into.
+ * @param dstOff The offset of the first element to be copied in
+ *               the destination allocation.
+ * @param dstMip Mip level in the destination allocation.
+ * @param count The number of elements to be copied.
+ * @param srcAlloc The source data allocation.
+ * @param srcOff The offset of the first element in data to be
+ *               copied in the source allocation.
+ * @param srcMip Mip level in the source allocation.
+ */
+extern void __attribute__((overloadable))
+    rsAllocationCopy1DRange(rs_allocation dstAlloc,
+                            uint32_t dstOff, uint32_t dstMip,
+                            uint32_t count,
+                            rs_allocation srcAlloc,
+                            uint32_t srcOff, uint32_t srcMip);
+
+/**
+ * Copy a rectangular region into the allocation from another
+ * allocation.
+ *
+ * @param dstAlloc allocation to copy data into.
+ * @param dstXoff X offset of the region to update in the
+ *                destination allocation.
+ * @param dstYoff Y offset of the region to update in the
+ *                destination allocation.
+ * @param dstMip Mip level in the destination allocation.
+ * @param dstFace Cubemap face of the destination allocation,
+ *                ignored for allocations that aren't cubemaps.
+ * @param width Width of the incoming region to update.
+ * @param height Height of the incoming region to update.
+ * @param srcAlloc The source data allocation.
+ * @param srcXoff X offset in data of the source allocation.
+ * @param srcYoff Y offset in data of the source allocation.
+ * @param srcMip Mip level in the source allocation.
+ * @param srcFace Cubemap face of the source allocation,
+ *                ignored for allocations that aren't cubemaps.
+ */
+extern void __attribute__((overloadable))
+    rsAllocationCopy2DRange(rs_allocation dstAlloc,
+                            uint32_t dstXoff, uint32_t dstYoff,
+                            uint32_t dstMip,
+                            rs_allocation_cubemap_face dstFace,
+                            uint32_t width, uint32_t height,
+                            rs_allocation srcAlloc,
+                            uint32_t srcXoff, uint32_t srcYoff,
+                            uint32_t srcMip,
+                            rs_allocation_cubemap_face srcFace);
+
 // Extract a single element from an allocation.
 extern const void * __attribute__((overloadable))
     rsGetElementAt(rs_allocation, uint32_t x);