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Use P3 (D65) XYZ <-> RGB conversion matrix in display-p3
sample instead of the one currently being used, which is
for P3 (DCI) XYZ <-> RGB conversion.

BTW, all the matrices in display-p3 sample are updated to
high precision floats (rounded to 10 decimal digits).

 Author:    Tony Guo <>
 Date:      Mon Mar 21 12:39:34 2022 +0800

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NDK Samples build

This repository contains Android NDK samples with Android Studio C++ integration.

These samples use the new CMake Android plugin with C++ support.

Samples could also be built with other build systems:

  • for ndk-build with Android Studio, refer to directory other-builds/ndkbuild
  • for gradle-experimental plugin, refer to directory other-builds/experimental. Note that gradle-experimental does not work with unified headers yet: use NDK version up to r15 and Android Studio up to version 2.3. When starting new project, please use CMake or ndk-build plugin.

Additional Android Studio samples:


Known Issues

For samples using build system with ndk-build see the android-mk branch.

Build Steps

  • With Android Studio: "Open An Existing Android Studio Project" or "File" > "Open", then navigate to & select project's build.gradle file.
  • On Command Line: set up ANDROID_HOME and ANDROID_NDK_HOME to your SDK and NDK path, cd to individual sample dir, and do "gradlew assembleDebug"


For any issues you found in these samples, please

For Android NDK generic questions, please ask on Stack Overflow, Android teams are periodically monitoring questions there.


Copyright 2018 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

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.