#!F-adobe-helvetica-medium-r-normal--18*
#!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 
