File: README_sgi4

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*
* README for IBM Visualization Data Explorer for SGI. 
*
*
*
 
 
The information contained in this file consists of hints for using the
system, help with functions that may not be apparent, and last minute updates
to the existing documentation.  It is advisable to review this file any time
Data Explorer updates are applied.
 
========================================================================
 
CONTENTS
 
    To go directly to an item, search for the item number beginning
    at the left margin.
 
 
    1. Hardware Rendering on SGI Platforms
       A. Exceeding System/Process Memory 
    2. Adding a Module
       A. Using the Module Builder 
       B. Bad File Magic Number error
    3. Gamma Correction
 
========================================================================
 
1. Hardware Rendering on SGI Platforms
 
A. Exceeding System/Process Memory 
The most recent object displayed is stored in system memory. If this object
is very large it is possible to exceed the system/process memory limits.
If this occurs you will receive many errors of the following form:
 ERR#2_gl_makeroom
 
The only known workaround is to reduce the size of the object(s).
 
 
2. Adding a Module
 
A. Using the Module Builder 
When using the module builder to build a full dxexec, at link time the
following warning message may appear:
   /usr/bin/ld:
   Warning: sscanf: multiply defined
            previous (used) definition from '/usr/lib/libmpc.a':
            new (ignored) definition from '/usr/lib/libmpc.a'
 
This message should be ignored.
 
B. Bad File Magic Number error
If IRIX 5 is not installed on the system, the linker will give
the error message "Object file format error, bad file magic number".
 
 
3. Gamma Correction
If you are displaying on an SGI display which already does gamma
correction, you can disable the gamma correction done by Data Explorer
by setting the DXGAMMA environment variable to 1.0 before starting DX.
 
 
----------------------------------------------------------------------
 
The following trademarks apply to this information:
 
IBM is a registered trademark of International Business Machines Corporation.
IBM Visualization Data Explorer is a trademark of International
    Business Machines Corporation.
IRIX and Silicon Graphics are registered trademarks of Silicon Graphics, Inc.