<s>
RenderScript	B-Application
is	O
a	O
deprecated	B-General_Concept
component	O
of	O
the	O
Android	B-Application
operating	I-Application
system	I-Application
for	O
mobile	O
devices	O
that	O
offers	O
an	O
API	B-Application
for	O
acceleration	O
that	O
takes	O
advantage	O
of	O
heterogeneous	O
hardware	O
.	O
</s>
<s>
It	O
provides	O
the	O
developer	O
three	O
primary	O
tools	O
:	O
A	O
simple	O
3D	O
rendering	O
API	B-Application
,	O
a	O
compute	O
API	B-Application
similar	O
to	O
CUDA	B-Architecture
,	O
and	O
a	O
C99-derived	O
language	O
.	O
</s>
<s>
RenderScript	B-Application
was	O
added	O
in	O
Android	B-Application
3.0	I-Application
Honeycomb	I-Application
.	O
</s>
<s>
As	O
of	O
Android	B-Application
4.1	O
,	O
RenderScript	B-Application
's	O
experimental	O
3D	O
rendering	O
API	B-Application
has	O
been	O
deprecated	B-General_Concept
,	O
and	O
now	O
exists	O
solely	O
as	O
a	O
compute	O
API	B-Application
.	O
</s>
<s>
Android	B-Application
4.2	O
added	O
new	O
capabilities	O
to	O
script	O
intrinsics	O
,	O
such	O
as	O
Blend	O
and	O
Blur	O
;	O
as	O
well	O
as	O
ScriptGroups	O
which	O
allows	O
related	O
RenderScript	B-Application
scripts	O
to	O
be	O
grouped	O
and	O
executed	O
with	O
one	O
call	O
.	O
</s>
<s>
It	O
also	O
added	O
FilterScript	O
,	O
which	O
is	O
a	O
subset	O
of	O
RenderScript	B-Application
that	O
allows	O
developers	O
to	O
write	O
their	O
image	O
processing	O
operations	O
in	O
FilterScript	O
using	O
the	O
standard	O
RenderScript	B-Application
runtime	O
API	B-Application
,	O
but	O
within	O
stricter	O
constraints	O
that	O
ensure	O
wider	O
compatibility	O
and	O
improved	O
optimization	O
across	O
multi-core	B-Architecture
CPUs	I-Architecture
,	O
GPUs	O
,	O
and	O
DSPs	O
.	O
</s>
<s>
FilterScript	O
is	O
less	O
precise	O
in	O
floating	B-General_Concept
point	I-General_Concept
precision	I-General_Concept
,	O
and	O
more	O
cross	O
device	O
compatible	O
subset	O
of	O
RenderScript	B-Application
and	O
should	O
not	O
be	O
mistaken	O
for	O
a	O
RenderScript	B-Application
replacement	O
technology	O
.	O
</s>
<s>
On	O
April	O
19	O
,	O
2021	O
,	O
Google	B-Application
announced	O
that	O
RenderScript	B-Application
will	O
be	O
deprecated	B-General_Concept
in	O
Android	B-Application
12	I-Application
,	O
and	O
recommended	O
porting	O
existing	O
code	O
to	O
Vulkan	B-Application
.	O
</s>
<s>
RenderScript	B-Application
is	O
designed	O
to	O
always	O
run	O
on	O
the	O
various	O
Android	B-Application
platforms	I-Application
regardless	O
of	O
hardware	O
type	O
.	O
</s>
<s>
RenderScript	B-Application
portability	O
depends	O
upon	O
device-specific	O
drivers	O
:	O
a	O
basic	O
CPU-only	O
driver	O
is	O
provided	O
for	O
every	O
device	O
,	O
while	O
there	O
exist	O
some	O
specific	O
chipset-provided	O
RenderScript	B-Application
drivers	O
that	O
enable	O
GPU	O
usage	O
(	O
e.g.	O
</s>
<s>
Qualcomm	O
specific	O
drivers	O
,	O
which	O
are	O
provided	O
in	O
the	O
libRSDriver_adreno.so	O
Android	B-Application
library	O
)	O
.	O
</s>
<s>
RenderScript	B-Application
is	O
designed	O
to	O
tune	O
tasks	O
at	O
runtime	O
that	O
can	O
be	O
efficiently	O
split	O
and	O
run	O
concurrently	O
on	O
the	O
underlying	O
hardware	O
.	O
</s>
<s>
As	O
of	O
Android	B-Application
4.2	O
,	O
RenderScript	B-Application
has	O
been	O
expanded	O
to	O
run	O
on	O
the	O
GPU	O
in	O
addition	O
to	O
the	O
CPU	O
on	O
supported	O
systems	O
.	O
</s>
<s>
RenderScript	B-Application
cannot	O
yet	O
express	O
on-chip	O
inter-thread	O
communication	O
(	O
known	O
as	O
local	O
memory	O
in	O
OpenCL	B-Application
,	O
and	O
shared	O
memory	O
in	O
CUDA	B-Architecture
)	O
.	O
</s>
<s>
RenderScript	B-Application
cannot	O
yet	O
express	O
hardware-implemented	O
2D	O
and	O
3D	O
lookups	O
with	O
bilinear	O
interpolation	O
(	O
known	O
as	O
texture	O
in	O
CUDA	B-Architecture
,	O
and	O
image	O
read	O
in	O
OpenCL	B-Application
)	O
.	O
</s>
