The onSurfaceCreated() method in the Renderer is called every time the rendering starts or whenever the context is lost. This typically happens when the orientation changes or when the device wakes up after going to sleep. When the context is lost, all the textures are deleted from memory. This is not something Rajawali inflicts upon [...]

This small tutorial is going to focus on the syntax for creating materials only. If you want to go over the basics then please read this first: Rajawali Tutorial 1: Basic Setup & a Sphere Rajawali Tutorial 2: Creating a live wallpaper and importing a model Alright. Let’s create some materials Simple Material A basic [...]

I’m going to be lazy and make you download the zipped Eclipse project. Get it here. The basics of Android live wallpapers are well documented so I won’t go over that. I suggest you take a look at AndroidManifest.xml, /res/xml/preferencescreen.xml, /res/xml/settings.xml and com.rajawali.tutorials.WallpaperSettings for wallpaper specific stuff. Here are the specifics for Rajawali. The RajawaliTutorial2Wallpaper [...]

So here’s the first very basic Rajawali tutorial. Any questions, let me know Create a new project in Eclipse (Right-click in Package Explorer and choose New > Project … Android Project). Use these values in the configuration screen: project name: RajawaliTutorial1 the “Build Target” should be at least “2.2″ application name: RajawaliTutorial1 package name: rajawali.tutorials create [...]

I’ve been working on this on and off for the last couple of months. It is by no means a fully-featured 3D engine. It has some nice features and I figured I might as well move it to a public repository so other people can use it as well. The other 3D engine for Android [...]

NOTE: This OpenGL ES 1.1 framework isn’t maintained anymore. Check out the OpenGL ES 2.0 Rajawali framework which also supports live wallpapers. I haven’t done anything with Min3D for while. I know people have logged some bugs on Google Code but I haven’t had the time to look at them yet. Shame on me. Seeing the [...]

NOTE: This OpenGL ES 1.1 framework isn’t maintained anymore. Check out the OpenGL ES 2.0 Rajawali framework which also supports live wallpapers. I’ve justed committed a new class to the Min3D repository on Google Code: SkyBox. Here’s how to use it: public void initScene() { /** * Create a new Skybox. The first parameter specifies the [...]

I made this one for an internal presentation about WebGL. I did the presentation but for some reason I used plain old powerpoint slides. Don’t ask. It’s made with GLGE, JSTweener and the Blender to WebGL Exporter. I guess it could use a bit of optimisation here and there. Oh, and I have tested it [...]

Now here’s something that’s been done a thousand times before in a thousand different ways! Sometimes it’s good to re-invent the wheel so you can learn something new My purpose for this demo was to experiment with vertex and fragment shaders. They’re very powerful tools that allow you to create the most amazing effects. Click [...]

In my previous post about X3DOM I covered some of the very basics. I used a <Box> object and slapped a Twitter avatar on it. In this post I’m going to use the <IndexedFaceSet> element to create geometry dynamically. Read them pixels For this example I’ve used a PHP-script that loads an image, resizes it [...]