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How To: Configure UNIX so ArcView takes advantage of a 24-bit graphics card when displaying images

Summary

ArcView can take advantage of 24-bit graphics cards on UNIX systems when displaying images.

Procedure

Configuring UNIX so that ArcView can display images in 24-bit mode differs for each video card and platform. Consult your system's documentation for more information. Some examples are listed below.

  • Rasterflex 32 video/graphics card on Solaris 1.x

    Start OpenWindows with the following command:

    Code:
    openwin -dev /dev/rfx0 defdepth 24 staticvis

  • SX graphics card on Solaris 2.x

    Start OpenWindows with the following command:

    Code:
    openwin -dev /dev/fbs/cgfourteen0 defdepth 24

  • Changing the resolution from 8-bit to 24-bit on the SGI platform

    1. Edit the /usr/lib/X11/xdm/Xservers file. If the workstation is running in 24-bit mode, this file will have the following entry:

    Code:
    -class TrueColor -depth 24


    2. Remove the above reference and replace with the following:

    Code:
    -pseudomap 4sight


    3. Stop Xsgi and restart so that the changes will take affect. Once you kill Xsgi, you will be logged out. Save and
    exit any applications.

    Code:
    #ps -ef | grep Xsgi
    root 389 387 1 Jul 06 ? 27:16 /usr/bin/X11/Xsgi -gamma 1.7
    -bs -nobitscale -c class TrueColor -depth 24 -solidroot sg

    #kill -15 389


    4. Login and check that Xsgi is running in 8-bit mode.

    Code:
    #ps -ef | grep Xsgi
    root 425 422 2 Jul 06 ? 18:00 /usr/bin/X11/Xsgi -gamma 1.7
    -bs -nobitscale -c -pseudomap 4sight -solidroot sg