Android Native EGL example

This project demonstrates how to combine Java application with native C/C++ code for OpenGL rendering on Android 2.3 and newer. It shows how to do rendering without GLSurfaceView and GLSurfaceView.Renderer Java classes. The solution gives full control of the rendering for the native code while still allowing the convenience of using Java for calling Android APIs.

Java part of the sample application is responsible for the main UI and application lifecycle. It creates empty SurfaceView and passes that to the native code. Native code uses that for OpenGL rendering. The application is running standard Java activity and not the NativeActivity.

Native code starts a new thread using pthreads API to execute rendering code. It uses EGL API to set up rendering context for the thread.

Requirements

Android API level 9 and Android NDK r5

Acknowledgments

The EGL setup code was adapted from Android NDK native-activity sample.

The OpenGL cube was adapted from Android SDK Graphics ApiDemos.