Code example for GL10

Methods: glFrustumfglLoadIdentityglMatrixModeglViewport

        public void onSurfaceChanged(GL10 gl, int width, int height) {
             gl.glViewport(0, 0, width, height);
              * Set our projection matrix. This doesn't have to be done 
              * each time we draw, but usually a new projection needs to 
              * be set when the viewport is resized. 
             float ratio = (float) width / height;
             gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10);
        public void onSurfaceCreated(GL10 gl, EGLConfig config) {
             * By default, OpenGL enables features that improve quality 
             * but reduce performance. One might want to tweak that 
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