xref: /developers/samples/android/renderScript/RenderScriptIntrinsic

Android RenderScriptIntrinsic Sample
===================================

RenderScriptIntrinsic sample that demonstrates how to use RenderScript intrinsics.
Creates several RenderScript intrinsics and shows a filtering result with various parameters.
Also shows how to extends RedioButton with StateListDrawable.

Introduction
------------

[RenderScript][1] is a framework for running computationally intensive tasks at high performance on
Android. RenderScript is primarily oriented for use with data-parallel computation, although serial
computationally intensive workloads can benefit as well.

RenderScript **intrinsics** are built-in functions that perform well-defined operations often seen
in image processing. Intrinsics provide extremely high-performance implementations of standard
functions with a minimal amount of code.

This sample shows how to access and use the blur, convolve, and matrix intrinsics:

```java
mScriptBlur = ScriptIntrinsicBlur.create(mRS, Element.U8_4(mRS));
mScriptConvolve = ScriptIntrinsicConvolve5x5.create(mRS,
        Element.U8_4(mRS));
mScriptMatrix = ScriptIntrinsicColorMatrix.create(mRS,
        Element.U8_4(mRS));
```

RenderScript intrinsics will usually be the fastest possible way for a developer to perform these
operations. The Android team works closely with our partners to ensure that the intrinsics perform
as fast as possible on their architectures  often far beyond anything that can be achieved in a
general-purpose language.

[1]: http://developer.android.com/guide/topics/renderscript/compute.html

Pre-requisites
--------------

- Android SDK 28
- Android Build Tools v28.0.3
- Android Support Repository

Screenshots
-------------

<img src="screenshots/main.png" height="400" alt="Screenshot"/> 

Getting Started
---------------

This sample uses the Gradle build system. To build this project, use the
"gradlew build" command or use "Import Project" in Android Studio.

Support
-------

- Google+ Community: https://plus.google.com/communities/105153134372062985968
- Stack Overflow: http://stackoverflow.com/questions/tagged/android

If you've found an error in this sample, please file an issue:
https://github.com/googlesamples/android-RenderScriptIntrinsic

Patches are encouraged, and may be submitted by forking this project and
submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.

License
-------

Copyright 2019 The Android Open Source Project, Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements.  See the NOTICE file distributed with this work for
additional information regarding copyright ownership.  The ASF licenses this
file to you under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License.  You may obtain a copy of
the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
License for the specific language governing permissions and limitations under
the License.