Displaying graphics with EGL

Besides the GLSurfaceView display mechanism we described in the previous recipe, it is also possible to display OpenGL graphics using EGL.

Getting ready

Readers are recommended to read the Drawing 3D Graphics and Lighting up the Scene with OpenGL ES 1.x API recipe before going through this one.

How to do it...

The following steps describe how to create an Android project that demonstrates the usage of EGL:

1. Create an Android application named EGLDemo. Set the package name as cookbook.chapter4.egl. Please refer to the Loading native libraries and registering native methods recipe in Chapter 2, Java Native Interface, if you want more detailed instructions.

2. Right-click on the project EGLDemo, select Android Tools | Add Native Support.

3. Add two Java files, namely EGLDemoActivity.java and MySurfaceView.java. EGLDemoActivity.java sets ContentView as an instance of MySurfaceView, and starts and stops rendering at the Android activity callback functions:

   … …
   public void onCreate...