3DLABS Oxygen GVX210 - Manual (Page 24)

Software Configuration
3Dlabs Oxygen GVX210 User's Guide 14
For best performance this option should only be enabled for applications that will not operate
correctly otherwise.
Disable Direct3D Gamma Controls lets you turn off DirectX gamma control if you experience an
extremely dark screen, potentially caused by an application’s use of an incorrect default.
Gamma adjustment for this application affects the entire screen display. As with the contrast on your
television, you can adjust this value if your application causes the display to consistently look too dark
or too light.