ATI Technologies 9000 Direct 3D Compatibility Settings, Support W, Buffer, Support 32-bit

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Direct 3D® Compatibility Settings

	This will enable W-Buffer support for 3D games. It is
Support W-	recommended to disable this for games that do not
	support this feature. Certain applications require the
buffer
	increased precision of W-Buffering and will exhibit
	artifacts unless the W-Buffer is enabled.
	Z-Buffer Bit Depth can be 16 bits, 24 bits, or 32 bits. 16
Support 32-bit	and 24 are selected by default to achieve optimum
Z-buffer depth	performance. Very few applications require a 32 bit Z-
	Buffer, so in most cases this feature should be disabled.