Android RenderScript support library  A while back I wrote about
RenderScript and the lack of a support library. Now Google has
released the support library for RenderScript, making it a lot
more accessible for a lot of developers. Usage is really simple,
just import the correct classes:    1. import*;  And target
Android API 18 when building:    3. sdk.buildtools=18.1.0  There
are unfortunately some limitations, but nothing that’s a real
show-stopper.  “Allocation.USAGE_IO_INPUT and
Allocation.USAGE_IO_OUTPUT are not currently available in the
RenderScript Support Library.”  “Devices running Android 4.2 and
earlier will always run their RenderScript applications on the
CPU, while devices running Android 4.3 or later will run their
RenderScript applications on whatever processors are available
on that particular device.”  “Support Library versions have to
be precompiled to support all possible platforms, there is a
performance hit when running the precompiled scripts compared to
runtime compilation on Android