3Dlabs GVX1, User Manual

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The Oxygen VX1/GVX1 Driver
Chapter 2 - Software Configuration 14
formats. If you have problems such as incorrect colors or poor quality texturing, try
disabling this option.
• “Disable 16-bit alpha-luminance” textures enables Direct3D support for
monochrome (luminance) textures. These can be useful for applications which use
the new features of DirectX 6, but older applications can misinterpret these new
formats. If you have problems such as incorrect colors or poor quality texturing, try
disabling this option.
• “Enable Palettized textures” enables Direct3D support for 8bit textures which use a
separate 'look-up' table to specify the color.
These are useful for graphics cards with a
small amount of memory. However, they can be slower than the alternatives available
on cards with large amounts of memory. For best performance this option should
only be enabled for applications that will not operate correctly otherwise.
• “Disable D 3D 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.
• “No wait for Vblank” lets you achieve the highest rendering frame rates possible with
double-buffered applications. Checking this can result in higher frame rates and
benchmark scores, especially the OPC Viewperf benchmark. The slight performance
penalty associated with the default (unchecked) setting, however, can be well worth
the image quality enhancement.
• “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.