public HelloOpenGLES20SurfaceView(Context context) : base(context) { // Create an OpenGL ES 2.0 context. setEGLContextClientVersion(2); // set the mRenderer member mRenderer = new HelloOpenGLES20Renderer(); setRenderer(mRenderer); // Render the view only when there is a change setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY); }