An experimental browser for Android that lets developers create Augmented Reality (AR) experiences using web technologies. An iOS version is also available.
WebARonARCore is still built on top of the Android ARCore Developer Preview 1 APK and because of that, only a certain number of devices are supported officially: Google Pixel 1 and 2 (both standard and XL) and Samsung Galaxy S8. The check to only detect these devices at runtime has been removed but the behavior on other ARCore models (supported by newer ARCore versions) is undefined.
Install the ARCore APK, either directly from a device:
- Visit this link from a web browser on your Android device to download and install the ARCore Developer Preview 1 APK.
...or by using ADB:
- Download the ARCore Developer Preview 1 APK to your computer from here and install the APK on your device:
$ adb install -r path/to/arcore_preview.apk
Directly from a device:
- Visit this link from a web browser on your Android device to download and install the WebARonARCore APK.
...or by using ADB:
- Download the WebARonARCore APK.
- Install the APK to your device:
$ adb install -r /path/to/WebARonARCore.apk
Alternatively, the WebARonARCore APK can be built and installed from source.
To build AR web experiences that work with WebARonARCore (or WebARonARKit for iOS), we recommend three.ar.js, a helper library that works with the popular three.js WebGL framework. Three.ar.js provides common AR building blocks, such as a visible reticle that draws on top of real world surfaces, and example scenes.
WebARonARCore uses WebViews, which is a similar debugging process to debugging Chrome for Android tabs. Check out the prereqs for your device at Get Started with Remote Debugging Android Devices, and learn more about Remote Debugging WebViews by opening
chrome://inspect in the desktop browser while your device is connected via USB.
- Linux machine
We recommend the following steps:
- Open a terminal window
- Install depot_tools. You can follow this tutorial or simply follow these 2 steps:
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
- Create a folder to contain
chromiumand move to it:
$ mkdir ~/chromium && cd ~/chromium
- Checkout the Chromium repo:
~/chromium$ fetch --nohooks android. Note: This process may take a long time (an hour?)
- Enter the
$ cd src.
- Download the dependencies:
$ gclient sync. Note: This process may take some time too.
- Install the build dependencies:
- Setup the environment:
~/chromium/src$ . build/android/envsetup.sh
- Add this git repo as a remote (we are going to call it 'github'):
git remote add github https://github.com/google-ar/WebARonARCore.git
- Fetch the newly added remote:
git fetch github
- Checkout the webarcore branch from the github remote:
git checkout --track github/webarcore_57.0.2987.5
- Synchronize the dependencies with this command:
~/chromium/src$ gclient sync --disable-syntax-validation. Note: This process may take some time too.
- Create a folder where to make the final product compilation:
~/chromium/src$ mkdir -p out/build.
- Create and edit a new file
out/build/args.gn. Copy and paste the following content in the
target_os = "android" target_cpu = "arm64" is_debug = false is_component_build = true enable_webvr = true proprietary_codecs = false ffmpeg_branding = "Chromium" enable_nacl = false remove_webcore_debug_symbols = true
- Prepare to build:
~/chromium/src$ gn args out/build. Note: once the command is executed, the vi editor will show you the content of the
args.gnfile just edited a few steps before. Just exit by pressing ESC and typing colon and
Build, install and run
The line below not only compiles Chromium but also installs the final APK on to a connected device and runs it, so it is convenient that you to connect the device via USB before executing it. The project that will be built by default is the Chromium WebView project, the only one that has been modified to provide AR capabilities.
You can review the content of the script to see what it does (it is a fairly simple script) but if you would like to compile the final APK on your own you could do it by executing the following command:
~/chromium/src$ ninja -C out/build android_webview_apk
The final APK will be built in the folders
WebARonARCore is built of two essential technologies: ARCore and Chromium. We also extend the WebVR 1.1 API, which gives us much of what we need for augmented reality, with a few more essentials, such as motion tracking, rendering of the camera's video feed, and basic understanding of the real world. For details, see WebVR API extension for smartphone AR
- The current implementation of WebARonARCore is built on top of the Chromium WebView flavor. This has some implementation advantages but some performance and use disadvantages. We are working on making the implementation on a full version of Chromium.
- The current implementation of WebARonARCore is built on top of the ARCore Developer Preview version 1. This may lead to uncertain behavior in some devices that were not supported by that ARCore version.
- Pausing/resuming/switching away from the app causes screen to turn black. This is a consequence of having built the implementation on top of the WebView flavor of Chromium. A proper implementation on full Chromium or a rebase to a more recent Chromium WebView version (>57.0.2987.5) might solve this problem.
- The Web Speech API is a standard web API for text to speech and speech to text conversion that is available in Chromium. As WebARonARCore is built on top of the WebView version of Chromium, does not provide this functionality by default. There is a solution though, using a polyfill we provide, but in order to use it, you need to either a) include the three.ar.js library before making any use of the Web Speech API or b) include the ARSpeechRecognition.js file also before making any reference to the Web Speech API. Only speech recognition is suspported, not speech synthesis for now.
- Add more AR-related features.
- Adapt the implementation to the WebXR spec proposal.
- Implement the prototype on full Chromium (not on the WebView flavor) and to a newer tag version (>57.0.2987.5).
- Improve the VRPassThroughCamera rendering pipeline either making it obscure for the developer or by using regular WebGL textures and shader samplers without having to use the external image texture extension.
- Adapt the prototype to the latest ARCore.
Apache License Version 2.0 (see the
LICENSE file inside this repo).