DOCUMENT:Q164158  09-AUG-2001  [winnt]
TITLE   :OpenGL Diffuse Settings Revert to Default
PRODUCT :Microsoft Windows NT
PROD/VER:winnt:4.0
OPER/SYS:
KEYWORDS:kbdisplay kbinterop

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The information in this article applies to:

 - Microsoft Windows NT Workstation version 4.0 
 - Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

When using OpenGL with Windows NT, the diffuse parameter changes back to the
default when the color material changes from AMBIENT_AND_DIFFUSE to AMBIENT.

CAUSE
=====

There is a problem in Windows NT with the above OpenGL command sequence where
the diffuse material parameter is incorrect.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT versions 4.0. This
problem was corrected in the latest Microsoft Windows NT 4.0 U.S. Service Pack.
For information on obtaining the service pack, query on the following word in
the Microsoft Knowledge Base (without the spaces):

   S E R V P A C K


Additional query words: glEnable glMaterial glColor3f GL_AMBIENT COLOR MATERIAL Emissive Specular

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Keywords          : kbdisplay kbinterop 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : winnt:4.0
Issue type        : kbbug
Solution Type     : kbfix

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