@ZappoMan So I'm thinking something like:
```
const int OBSCURED_WINDOW_FRAME_RATE = 15;
const int OBSCURED_WINDOW_FRAME_TIME = MSECS_PER_SECOND / OBSCURED_WINDOW_FRAME_RATE;

GLCanvas::GLCanvas() : QGLWidget(QGLFormat(QGL::NoDepthBuffer)),
    _throttleRendering(false),
    _idleRenderInterval(OBSCURED_WINDOW_FRAME_TIME)
{
}
```