Rajawali Tutorial 5: Skybox

Posted by on Feb 15, 2012 in 3D, Android, Rajawali • 15 comments

This tutorial is now on the Rajawali Wiki: Tutorial 04 – Skybox



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15 comments

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  1. Rajawali Tutorial 4: Optimisation | Rozengain.com - Creative Technology Blog on Feb 15, 2012, 10:21 pm:

    [...] to Rajawali Tutorial 5: Skybox. Tags: 3D, Android, OpenGL, OpenGL ES, optimization, [...]

  2. Announcing Rajawali: An OpenGL ES 2.0 Based 3D Framework For Android | Rozengain.com - Creative Technology Blog on Feb 17, 2012, 3:20 pm:

    [...] Rajawali Tutorial 5: Skybox [...]

  3. jetion on Jul 27, 2012, 8:43 am:

    Hi, Dennis!
    No matter how I adjust the Position, mCamera farPlane, nearPlane, or adjust the mSkybox Position, Scale, I see the box is always the same, but adjust the size of the FieldOfView after, depending on the mouth get bigger, and surface and surface of the joint between also appeared perspective effect, and now I don’t need this perspective effect, I need the ordinary Skybox effect, such as the Min3D Skybox effect, what have i got to do?

  4. Nicolas on Aug 2, 2012, 2:15 am:

    Does it always have to be animated/positioned individually or there’s a way to link it to the camera, so it moves according to it, like the rest of the scene?

    Thanks in advance

  5. John on Aug 15, 2012, 10:06 am:

    Hi, Dennis. I tried to use skybox in Min3D and Rajawali. Skybox in Min3D load much faster than in Rajawali. Even a low-res skybox in Rajawali loads about 10 seconds (in Min3D only 1-2 seconds).

  6. Dennis on Aug 16, 2012, 8:00 am:

    Hi,
    Yes, Rajawali uses 6 textures for the skybox. That’s the reason why it takes longer to load.
    This is a nicer way of doing things but not necessarily the best way. I will add the option to use a single texture to speed up things. Stay tuned :-)

  7. Dennis on Aug 17, 2012, 1:13 pm:

    Hi John,
    There’s a faster skybox now. Just grab the latest version of Rajawali and read this post :)
    http://www.rozengain.com/blog/2012/02/15/rajawali-tutorial-5-skybox/

  8. John on Sep 23, 2012, 1:20 pm:

    Thanks for Single Skybox, but it’s working very strange: after loading, the background image is too zoomed. I tried to use different images and change the parameter of “setFarPlane” method, but it makes no difference. Help please.

  9. MJ on Jan 4, 2013, 5:08 pm:

    Is it possible to completely remove a skybox from the scene?

  10. MJ on Jan 6, 2013, 4:05 pm:

    ^ Answered my own question. You should destroy it and set it to null.

  11. Girish on Feb 19, 2013, 1:27 pm:

    FATAL EXCEPTION: GLThread 727
    java.lang.NullPointerException
    at rajawali.materials.TextureManager.addTexture(TextureManager.java:257)
    at rajawali.materials.TextureManager.addTexture(TextureManager.java:204)
    at rajawali.materials.TextureManager.reload(TextureManager.java:661)
    at rajawali.renderer.RajawaliRenderer.onSurfaceCreated(RajawaliRenderer.java:246)
    at com.example.rajawalitut.RajawaliRendererThis.onSurfaceCreated(RajawaliRendererThis.java:37)

    I got this error and i have used below code.

    @Override
    protected void initScene() {
    mCamera.setFarPlane(1000);
    /*
    * Skybox images by Emil Persson, aka Humus. http://www.humus.name
    * humus@comhem.se
    */
    setSkybox(R.drawable.posz, R.drawable.posx, R.drawable.negz, R.drawable.negx, R.drawable.posy, R.drawable.negy);
    }

    @Override
    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    super.onSurfaceCreated(gl, config);

    mLight = new DirectionalLight(0.1f, 0.2f, 1.0f); //set the direction
    mLight.setPower(1.5f);

    Bitmap bg = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.selera_sari);
    mSphere = new Sphere(1, 12, 12);
    DiffuseMaterial material =new DiffuseMaterial();
    mSphere.setMaterial(material);
    mSphere.setLight(mLight);
    mSphere.addTexture(mTextureManager.addTexture(bg));
    addChild(mSphere);
    //mCamera.setZ(-4.2f);
    }

    @Override
    public void onDrawFrame(GL10 glUnused) {
    // TODO Auto-generated method stub
    super.onDrawFrame(glUnused);
    mSphere.setRotY(mSphere.getRotY() + 1);
    //mSphere.setRotX(mSphere.getRotX() + 1);
    }

  12. Girish on Feb 20, 2013, 12:59 pm:

    setSkybox method is not working in wallpaper template.

  13. Talha on Feb 24, 2013, 1:37 am:

    Hi, rajawali is really a cool framework
    btw
    I have experianced the issue above too while using the skyBox
    I was testing onPause and onResume behavior of my app then it crashed just after turning on the screen with the same nullpointer exception:
    java.lang.NullPointerException
    at rajawali.materials.TextureManager.addTexture(TextureManager.java:257)
    at rajawali.materials.TextureManager.addTexture(TextureManager.java:204)
    at rajawali.materials.TextureManager.reload(TextureManager.java:661)
    at rajawali.renderer.RajawaliRenderer.onSurfaceCreated(RajawaliRenderer.java:246)

    it seemed that cubemapmaterialInfos have “null” compression type by default.
    Ive just set my cubemapmaterialInfo’s compressiontype to NONE, then it worked.
    and I had to reset it to NONE in onSurfaceChanged method becuase it was turning null again.

    I dont know if this issue is just about the version of the android OS we used or if it is a bug. But this worked for me.

    cubeMapInfo.setCompressionType(rajawali.materials.TextureManager.CompressionType.NONE);

  14. Talha on Feb 24, 2013, 1:50 am:

    by saying cubeMapMaterialInfo, I meant the TextureInfo object that holds the cubemaptextures.

  15. Sumangala on Apr 2, 2013, 10:42 am:

    Hi,

    I dont know to load background image ,Pls can anyone help me on this

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