ATI X1800 User Guide - Page 77

API Specific 69 Set Support DXT texture formats for Direct 3D® This option enables support for DirectX® compressed texture formats. DXT requires half the amount of memory to draw the same amount of textures. This frees up memory while achieving high quality graphics. 1 Expand 3D in Advanced View. 2 Click API Specific. 3 Select Support DXT texture formats to place a check mark in the check box. Set Alternate pixel center for Direct 3D® This might eliminate problems with certain Direct 3D® games that display vertical and horizontal lines around textures or display text incorrectly. This setting should only be enabled if you are experiencing these issues, as it may cause problems in other games. 1 Expand 3D in Advanced View. 2 Click API Specific. 3 Select Alternate pixel center to place a check mark in the check box. Set Triple buffering for OpenGL® Enabling Triple buffering will improve the frame rate of games when vertical sync is enabled, only if the frame rate is less than the vertical sync refresh rate. In low memory situations, enabling Triple buffering may decrease application performance as there will be less frame buffer memory available for texture and geometry data. If there is insufficient memory available to support Triple buffering, it will automatically be disabled. 1 Expand 3D in Advanced View. 2 Click API Specific. 3 Select Triple buffering to place a check mark in the check box. Set Force 24-bit Z-buffer depth for OpenGL® Enables you to explicitly set the Z-buffer depth. Most applications will work best with the Disabled setting. 1 Expand 3D in Advanced View. 2 Click API Specific.