So local deployment on the simulator is not possible on Android. It makes it easier for me when reviewing the code. The emulator provided by the Android SDK supports only OpenGL ES 1.x, not OpenGL ES 2.0. I usually add a comment like the one above ( // 0x8080FFFF ) because I am used to read that. Then in the FlatColoredSquare function draw, add this line: gl.glColor4f(0.5f, 0.5f, 1.0f, 1.0f) // 0x8080FFFF Those values are white, and that’s why all the squares we previous made has a white color.Ĭreate a new class called FlatColoredSquare it should be identical to the Square class. The default values are: red = 1, green = 1, blue = 1 and alpha = 1. To tell OpenGL ES what color to work with you use this command: public abstract void glColor4f(float red, float green, float blue, float alpha) This means that if you have two different squares and you tell OpenGL ES to change the color right before the second square the first frame the two squares will have different color but the next rendered frame both squares will have the same color. One thing to remember is that when you set the color OpenGL ES uses this color until you change the color. Flat coloringįlat coloring is really easy just tell OpenGL ES what color to use when it is going to render.
ANDROID OPENGL ES 2.0 TUTORIAL HOW TO
Texturing is also a way of giving your mesh colors but it is not vertex coloring so I will show you how to do that in a later tutorial. Flat coloring that gives one solid color and smooth coloring that will blend colors specified for each vertex. The easiest way of coloring meshes is called vertex coloring and I am going to show you two different ways of doing that. You might be familiar with defining colors with hex (#FF00FF) or with decimals (255, 0, 255) we will use 0.1 where 0 map to 0 (#00) and 1 map against 255 (#FF). Where can I find some NDK OpenGL ES 2. The only tutorial/example I've found is the sample-stuff in the NDK itself. I want to use native code however so I want to do it through the NDK. If you like to read more about colors go to: RGB color model – Wikipedia, the free encyclopedia I'm looking to learn OpenGL ES 2.0 on Android and the tutorials I've found are nearly all for using the SDK with Java. The fourth is transparency, how solid the color should be. OpenGL ES uses a color model called RGBA ( Red, Green, Blue and Alpha ). Adding colorģD models with no colors are pretty boring so let’s add some color to it. I will continue with the source code from tutorial II. I’m going to talk about adding color to your mesh. This tutorial is all about transformations, how to move the polygons around. Last tutorial was about building your polygons. I have started a new updated serie of tutorials on OpenGL ES 2.0 for android.
ANDROID OPENGL ES 2.0 TUTORIAL FOR ANDROID
I have started a new updated serie of tutorials on OpenGL ES 2.0 for android. OpenGL ES Tutorial for Android Part III Transformations.