D2D1_VERTEX_OPTIONS_NONE

<summary> Default vertex processing. </summary>

<summary> Indicates that the output rectangle does not need to be cleared before drawing custom vertices. This must only be used by transforms whose custom vertices completely cover their output rectangle. </summary>

<summary> Causes a depth buffer to be used while drawing custom vertices. This impacts drawing behavior when primitives overlap one another. </summary>

<summary> Indicates that custom vertices do not form primitives which overlap one another. </summary>