| |
| Android BasicRenderScript Sample |
| =================================== |
| |
| This sample demonstrates using RenderScript to perform basic image manipulation. Specifically, it allows users |
| to dynamically adjust the saturation for an image using a slider. A custom RenderScript kernel performs the saturation |
| adjustment, running the computation on the device\'s GPU or other compute hardware as deemed appropriate by the system. |
| |
| 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. |
| |
| The RenderScript runtime will parallelize work across all processors available on a device, such as multi-core CPUs, |
| GPUs, or DSPs, allowing you to focus on expressing algorithms rather than scheduling work or load balancing. |
| RenderScript is especially useful for applications performing image processing, computational photography, or computer |
| vision. |
| |
| This sample demonstrates the fundamentals of writing a RenderScript compute kernel, and using it to perform basic image |
| manipulation. In this case, each pixel is transformed based on a liner interpolation between its original |
| RGB value and it's luminance (black-and-white) value, weighted based on the user's specified saturation target. |
| |
| [1]: http://developer.android.com/guide/topics/renderscript/compute.html |
| [2]: http://developer.android.com/reference/renderscript/rs__cl_8rsh.html#a254612a612ff7539b01a1478e03d8697 |
| |
| Pre-requisites |
| -------------- |
| |
| - Android SDK v23 |
| - Android Build Tools v23.0.0 |
| - 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-BasicRenderScript |
| |
| 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 2014 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. |
