GSDEVICEMODE

Sets the preferred graphics device to use in the program. If set to use a graphics device that is not supported by the system, the graphics device that is actually used can be different and is reported by the GSUSEDDEVICEMODE system variable.

0 = Undetected

1 = Software (BMP mode)

2 = OpenGL (recommended for working with 2D and 3D wireframe visual styles)

3 = OpenGL ES (recommended for 3D rendering as it supports advanced visual styles and high quality transparency)

4 = Custom graphics device

Type:     Integer

Saved:     In the registry

Range:     0 to 4

Default:     3