> ## Name

> VertexProgramTwoSideEnable - 3D API vertex program two side enable

> ## Usage

> VertexProgramTwoSideEnable = bool(enable)

> ## Valid Enumerants

> enable: true, false

> ## Description

> Enable/disable OpenGL vertex program color selection based on the polygon face direction. See the GL_VERTEX_PROGRAM_TWO_SIDE description on the OpenGL glEnable manual page for details.

> The standard reset callback sets the VertexProgramTwoSideEnable state to bool(false).

> ## Opengl Functionality Requirements

> OpenGL 1.0

> ## Direct3D Functionality Requirements

> Not applicable.

> ## See Also

> FrontFace