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#!N
#!N #!Rhardren Rendering
Approximations #!N #!N #!N Data Explorer provides access to the hardware
accelerators on the workstation, in addition to the default software rendering
techniques. The hardware enhancements are available only on workstations that are
equipped with 3-D graphic adapters. On systems without such adapters, only
the software rendering options are available. This enhancement is intended to
provide increased interactivity, especially in operations that involve only the rendering
process. #!N #!N Data Explorer can also provide accelerated rendering by
approximating the rendering using points, lines, and opaque surfaces. Such geometric
elements are often sufficient to approximate the appearance of the desired
image, and thus are useful for preliminary visualizations of the data.
#!N #!N The approximations fall into three main categories: bounding box,
dots, and wireframe. Wireframe is available only as a hardware rendering
technique. #!N #!N If you are using the graphical user interface
and the Image tool, you can access the rendering options by
using the #!F-adobe-times-bold-r-normal--18* Rendering Options #!EF option on the #!F-adobe-times-bold-r-normal--18* Options
#!EF pull-down menu in the Image window. This option invokes a
dialog box that allows you to set the rendering approximations for
continuous and one-time execution. (For more information, see #!Lglopt,dxall327 h Rendering Options... #!EL in IBM
Visualization Data Explorer User's Guide.) #!N #!N If you are not
using the Image tool, then you must use the Options module
to set various attributes that control the rendering approximations. The following
table lists the attributes that control rendering approximations, together with the
permissible values for each attribute. #!T,1,216,356,641 #!F-adobe-times-bold-r-normal--18* #!N TAB Attribute Name
TAB Values TAB Description #!EF #!N TAB "rendering mode" TAB "software"
TAB use software rendering #!N TAB - TAB "hardware" TAB use
hardware rendering #!N TAB "rendering approximation" TAB "none" "box" "dots" TAB
complete rendering object #!N TAB - TAB "wireframe" TAB bounding box
only #!N TAB - TAB - TAB dot approximation to object
#!N TAB - TAB - TAB wireframe approximation to object #!N
TAB "render every" TAB n TAB render every nth primitive #!N
TAB - TAB - TAB render everything (default) Note: If you
do not pass a camera to Display (i.e., if #!F-adobe-times-bold-r-normal--18* object
#!EF is already an image), Display will always use software to
display the image, regardless of the setting of any rendering options
using the Options tool. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF
#!N #!N #!Lhardsof,dxall825 h Differences between Hardware and Software Rendering #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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