User's Manual

User Guide for Chrome 500 Series Graphics
SG195-A.1 10/20/2008
Page 113
that is then applied to a single pixel.
3X,4X,…– Select intermediate sampling levels to
match your preferred balance between quality and
performance. The higher the sampling level, the
greater the degree of filtering. Visual quality will
improve at the expense of performance.
16X – Select 16X to force use of classic anisotropic
sampling using 128 taps in a non-square sampling
pattern. This level of filtering will produce very high
quality visual output, usually with a decrease in
rendering speed.
Features:
Advanced
Warning: Configuration of the following fetaures should
be done only by experienced users, as unexpected
behaviors or appearance may result.
Fast destination
clear
Outputs from texture filtering and pixel shading activities
are sent to rendering target destination buffers. S3
Graphics hardware can quickly respond to a DirectX
application’s request to clear a destination buffer by
providing a hardware-assisted fast clear mechanism for
the clearing operation. Efficient clearing of the
destination buffers helps speed target rendering.
Setting options include:
Auto (default) – Select Auto if you want S3
Graphics software to own the decision whether it is
appropriate to use hardware assisted fast clear of
the destination buffer. Hardware assist is usually
enabled (ON).
ON – Select ON to force use of Fast Destination
Clear for optimum performance. All requests to clear
the destination buffer are done through hardware.
This will usually speed rendering, and is the
preferred setting. If an application has display issues
with the fast clear, then you may wish to disable this
feature to improve visual quality for that specific
application.
OFF – Select OFF to disable Fast Destination Clear.
Requests will use a traditional method and clear the
whole destination buffer. This will result in a slower
clearing cycle, but may resolve unexpected visual
quality issues.
Fast Z + Stencil
clear
This option can be used to enable or disable the use of
S3 Graphics’ hardware-assisted fast clearing
mechanism for the Z and Stencil buffers.
The Z buffer is an area of video memory which stores a