[English]
README.TXT                  MATROX GRAPHICS INC.              1999.03.16

                    Matrox G200 OpenGL ICD for Windows 95/98
                                 Beta2 


Contents
========

- Description of this release
- Installation
- Registry settings
- General notes, problems, and limitations
- Bug fixes
- Game specific notes

Description of this release
===========================
Please read the following information and FAQ closely to understand
the capabilities of the ICD Beta2. The ICD Beta2 release offers
support for six OpenGL-based games under Windows 95/98 including,
Quake II, Quake, Half-Life, Sin, Heretic II and Hexen II. Other 
games/apps may run but they have not been tested. 
The ICD is stable and is being optimized for performance. On the 
performance front, this beta2 driver is showing a 25% performance
increase over the beta1 when running Quake2 timedemo1. In terms of 
stability, although it has not been extensively tested with apps other
than those listed above, we believe that this beta2 driver is more 
stable and will run a wider variety of applications than did the beta1.

Matrox is committed to the development and optimization of its OpenGL
ICD. 

Please check the Matrox website for future updates at 
http://www.matrox.com/mga/drivers/home.htm

Installation
============
To install Matrox G200 OpenGL ICD for Windows 95/98, start the 
included "setup" program.

NOTE: if you have played a game with the D3D Wrapper in the past,
you need to delete or rename the file "opengl32.dll" in your
game directory.  If this file is present, it will have priority
over the ICD and the ICD will not be enabled.

Registry settings
=================
The installation creates the following registry switch:
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\OpenGLDrivers]
"MGA ICD Driver"="MGAICD.DLL"

General notes, problems, and limitations
========================================
- This release runs under Windows 95/98 only. Windows NT will be
  supported shortly in an upcoming release.
- This driver requires the currently released G200 Windows 95/98 display
  driver version 4.51.010. Please make sure that it is installed before
  installing and running the ICD. This driver can be downloaded from 
  http://www.matrox.com/mga/drivers/latest_drivers/.
- DirectX version 6.0 or higher must be installed on your computer.
- Both AGP and PCI G200 cards are supported by the ICD Beta2.
- Please make sure that the Bus Mastering option is enabled in your
  Matrox Display Properties: (Matrox Display Properties->Settings->
  Advanced->"Use bus mastering" checkbox is checked). The ICD Beta2
  will not work with bus mastering disabled.
- This driver is being further optimized for performance.
- Hardware acceleration is available in 16 or 32 bits per pixel graphics
  modes only. Refer to Matrox Display Properties->Settings.
- The games supported by this Beta2 ICD can also be accelerated with the
  Direct3D wrapper. Please consult the readme of the Direct3D Wrapper
  for additional details.
 
Bug fixes
=========
- This driver now handles resolution switching correctly so you will be
  able to play in any resolution supported by the game. The only 
  exception to this is Half-Life ... see the Games specific notes below.
- SIN: On a 32-bit desktop, we had sometimes seen that trying to skip
  the introduction movies will cause the monitor to lose synchronization.
  We are no longer seeing this.

Game specific notes
===================
Quake
-----
Known problems:
- None

To play Quake with the ICD:
- Install the ICD.
- Go to the ID Software web site (www.idsoftware.com) to download the
  latest GLQuake patch.
- Install this patch.
- Run "glquake.exe"

Quake II (Version 3.20 with "q2-3_20-x86-full-ctf.exe" patch)
-------------------------------------------------------------
Known problems:
- None

To play Quake II with the ICD:
- Install the ICD.
- Select "Default OpenGL" in the video options.

Half-Life (version 1.008 with "hl1008.exe" patch)
-------------------------------------------------
Known problems:
- In multi-player games only , we are seeing GPFs on exit when running
  the game at resolutions other than 640x480. At such resolutions we
  also occasionally see GPFs when escaping from the game to the menu.
  We are not seeing these problems in single player games.

To play Half-Life with the ICD:
- Install the ICD.
- Copy the included file "opengl.cfg" to the ...\valve\hw\ directory
  under the Half-Life program directory.
- Select "Default OpenGL" in the video options.

Sin (version 1.03 with "sin103.exe" patch)
------------------------------------------
Known problems:
- Some sound cards may experience problems with the MGA-G200 cards.  
  To resolve the problem, go to the console and type:
  >s_primary 0 [enter]
  >snd_restart [enter]

To play Sin with the ICD:
- Install the ICD.
- Select "Default OpenGL" in the video options.

Heretic II
----------
Known problems:
- None

To play Heretic II with the ICD:
- Install the ICD.
- Select "Default OpenGL" in the video options.

Hexen II (version 1.11 with "ph2v111.exe" patch)
------------------------------------------------
Known problems:
- None.

To play Hexen II with the ICD:
- Delete or rename the file "opengl32.dll" in the directory where 
  Hexen II is installed (for example C:\HEXEN2).
- Install the ICD.
- Run "glhexen2.exe"