Example project for integration Rajawali and Cardboard SDK.

Sample photo is from http://eje-c.com/vr_promotion/.

There are 3 modules in this project.

• rajawali is a copy of Rajawali (see below).
• rajawalicardboard is a glue module which integrates Cardboard SDK and Rajawali. This module provides two classes RajawaliCardboardView and RajawaliCardboardRenderer. Your renderer should extend RajawaliCardboardRenderer and you should put RajawaliCardboardView to render your scene.
• app is an example app. This simply shows 360 panorama photo.

1. Download in ZIP or clone this repository.
2. Create new project with Android Studio. Cardboard SDK requires SDK Level 16 so you should select API 16 or higher.
3. Select File->Import Module...
4. Browse to rajawalicardboard directory and click Finish button. rajawali directory is also required. But it is automatically imported when rajawalicardboard is imported.
5. Add module dependency in app module. Open %Project ROOT%/app/build.gradle and add compile project(':rajawalicardboard') in dependencies block.
6. Edit AndroidManifest.xml to launch MainActivity in landscape mode. Open %Project ROOT%/app/src/main/AndroidManifest.xml and add android:screenOrientation="landscape" attribute to <activity>.
7. Modify your MainActivity like this.

public class MainActivity extends CardboardActivity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    RajawaliCardboardView view = new RajawaliCardboardView(this);
    setContentView(view);
    setCardboardView(view);

    RajawaliCardboardRenderer renderer = new MyRenderer(this); // your renderer
    view.setRenderer(renderer);        // required for CardboardView
    view.setSurfaceRenderer(renderer); // required for RajawaliSurfaceView
  }
  
  private static class MyRenderer extends RajawaliCardboardRenderer {
    
    public MyRenderer(Context context) {
      super(context);
    }

    @Override
    protected void initScene() {

      // create your scene

    }
  }
}

Your renderer should extend RajawaliCardboardRenderer and create your scene in initScene(). Nothing is special. Just create an normal scene like you did in RajawaliRenderer.

Camera is automatically rotated with gyro sensor. You should not set camera's orientation manually.

This project has own copy of Rajawali because I have to edit one line of codes. Edited line is #1011 line of org.rajawali3d.scene.RajawaliScene.

...
} else {
  GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
  GLES20.glClearColor(mRed, mGreen, mBlue, mAlpha);
}
...

to

...
} else {
  // GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
  GLES20.glClearColor(mRed, mGreen, mBlue, mAlpha);
}
...

I do not guarantee that my copy of rajawali is up to date. Rajawali will support VR soon. This project is considered for temporary use.