3DLABS Oxygen VX1 - Manual (Page 25)

The Oxygen VX1/Oxygen GVX1 Driver
16
OpenGL Support Screen
This screen controls OpenGL-application-specific driver settings and enables you to create
your own settings. When the panel initially appears the New and Remove Settings buttons, as
well as the Advanced Options section, are hidden. They appear when you click the Advanced
button at the top of the screen.
• Click Driver is optimized for application to reach a drop down list of applications,
then select the one you want to use. The rest of your actions on this screen will apply
to that choice. You can also click Select optimized application in the Configuration
Manager and select your application from that pop-up list.
• Click New to add an application to the list and customize its settings. Remove Setting
will remove a user created setting, but will not remove default settings created at
driver installation time.
• Number of DMA Buffers lets you configure the number of visible 3D windows that
can be supported with full speed acceleration. For most applications, 8 buffers is
sufficient.
• Size of each DMA buffer controls the size (in bytes) of the Direct Memory Access
(DMA) buffer. DMA is a technique whereby a device can directly read commands
from host memory.
• Number of DMA Sub-Buffers lets you set the number of Direct Memory Access
(DMA) buffers allocated for use by OpenGL. (DMA is a technique whereby a device
can directly access memory without having to go through the CPU). Each DMA