public void Init(IntPtr windowHandle, Size size) { //CreateOpenGLContext((IntPtr)windowHandle);//done in Xamarin.Android //InitGLEW();//done in Xamarin.Android this.shapeMaterial.Init(); this.imageMaterial.Init(); this.glyphMaterial.Init(); // Other state GL.Disable(GL.GL_CULL_FACE); GL.Disable(GL.GL_DEPTH_TEST); GL.DepthFunc(GL.GL_NEVER); GL.Enable(GL.GL_SCISSOR_TEST); Utility.CheckGLESError(); }