render

Render the layer. This method is called once per frame. The implementation should not makeany assumptions about the GL state (other than that the correct context is active). It maymake changes to the state, and is not required to reset values such as the depth mask, stencilmask, and corresponding test flags to their original values.Make sure that you are drawing your fragments with a z value of 1 to take advantage of theopaque fragment culling in case there are opaque layers above your custom layer.

Parameters