protected override void OnReadyForInitGLShaderProgram()
 {
     frameBuffer           = _glsx.CreateFrameBuffer(this.Width, this.Height);
     frameBufferNeedUpdate = true;
     //------------
     frameBuffer2 = _glsx.CreateFrameBuffer(this.Width, this.Height);
 }
        protected override void OnReadyForInitGLShaderProgram()
        {
            int max = Math.Max(this.Width, this.Height);

            frameBuffer = _glsx.CreateFrameBuffer(max, max);
        }