In addition it shows how to use quaternions for representing 3D object. It shows how to handle polygon geometries efficiently and how to write a simple vertex and fragment shader for a programmable graphics pipeline. 1, 1.0) //same for each in this caseĪnd when you are finished with all you want to update just present the frame buffer. The Cube OpenGL ES 2.0 example shows how to manually rotate a textured 3D cube with user input, using OpenGL ES 2.0 with Qt. For instance if you split the view with buffer having dimensions bWidth and bHeight into 4 equal rectangles and you want to refresh the top right: glViewport(bWidth*.5f. In this case you need to set glViewport for a specific part, setting ortho or frustum (if view segments are of different size) and that is it. If you need multiple contexts you will need to find a way to share resources between them though.Īnother approach is having a single view and simply using glViewport to draw to different parts. You might also need to have different contexts for each view and setting them as current before drawing (also before binding the frame buffer). Game and Graphics Programming for iOS and Android with OpenGL ES 2.0 offers important, need-to-know information if youre interested in striking a perfect. In this case all you need to do is bind the correct frame buffer before drawing to each of the views. Agregar un widget GLSurfaceView a tu archivo layout no es diferente a agregar cualquier otro widget. You can usually have multiple views with each having its own frame buffer. Para la app que estaremos creando en este tutorial, GLSurfaceView será suficiente.
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