3DFX (Banshee, Voodoo 1, Voodoo 2, Voodoo 2 SLI)
Half-Life ships with the current, tested GL mini-driver. Make sure that you have Glide version 2.54 or above. Half-Life does not support Direct3D on Voodoo cards.

The Voodoo 2 running in SLI mode on Windows/NT is prone to crashing. The solution to this instability is to either get an updated driver from 3DFX, disable SLI mode, or run under Windows 95/98.

3DFX Rush
With the current drivers, Half-Life supports the Voodoo rush in software mode only. Check with 3DFX for an updated driver that offers support for Half-Life.

NVIDIA Riva 128
You must have Windows 95 OSR 2 or later, Windows 98 or Windows NT. As of shipping, Half-Life Riva 128 OpenGL support requires the latest reference driver from NVIDIA. Direct3D support is currently unavailable.

NVIDIA TNT
Half-Life supports the TNT in software, OpenGL and Direct3D modes. Get the latest driver from the NVIDIA website.

Matrox G200
Half-Life supports the G200 in software and Direct3D. Get the latest driver from Matrox's site. Matrox will also be providing a GL mini-driver that will support OpenGL in Half-Life. Check with Matrox for details.

S3 Virge
Half-Life supports the Virge in software mode only.

S3 Savage
Half-Life supports the Savage in software and Direct3D. You can get the latest drivers from S3's site. S3 will be providing a GL driver that will support Half-Life. Check with S3 for details.

Quantum 3D Obsidian card
Quantum3D will be releasing drivers with support for DirectX 6 and Glide 3.x for Q1/99. Users may install the 3Dfx reference drivers while waiting. For Quantum3D to release updated drivers. However, Quantum3D's advanced features and functionality will not be available. These advanced features include Property Page settings, TV output, SwapLock (200SB only) and Performance Tuning. Please follow this simple procedure to install the Reference driver.

Procedure for installing 3Dfx Windows 95/98 Reference drivers with the Obisidean2 S/X serious and 90/200SB series:

1. Download the 3Dfx reference drivers for Voodoo2 from the 3Dfx website. http://www.3dfx.com
2. Extract the downloaded file into a temporary directory. Review the 3Dfx installation procedure in the readme file.
3. Remove the Obsidian2 adapter from the Device Manager in the System Properties Dialog.
   • From the Start menu, select Settings and then Control Panel.
   • Double-click on System, select the Device Manager tab.
   • Double-click on the Display adapter, secondary listing.
   • Select the Obsidian2 3D Graphics Card and click on the Remove button.
   • If you have an Obsidian2 X-Series (or 200SB), select the second Obsidian2 listing and remove it as well.
4. Uninstall the Obsidian2 drivers from Add/Remove Programs in the Control Panel.
   • From the Start menu, select Settings and then Control Panel.
   • Double-click on Add/Remove Programs, select the Install/Uninstall tab.
   • Scroll through the list and select the Quantum3D Obsidian2 adapter listed.
   • Click on the Add/Remove button.
   • Restart the computer. When Windows is restarted, the last portion of the removal is done automatically.
5. Install the 3Dfx Reference Drivers as describe by the 3Dfx readme file.

If you experience display anomalies (corrupted images, purple colors) with the 3Dfx Reference drivers, use the following REG file for the Obsidian2 adapter to solve the problems.

Obsidian2 Series: OB2X_3Dfx_Ref.reg

OB2X_3Dfx_Ref.reg

After the download, right-click on the REG file and select Merge. The necessary modifications will be made automatically.

Missing Decals (i.e. bullet holes) Half-Life uses a feature of OpenGL and Direct3D that some video card drivers do not support correctly. To override the default settings for this feature, put this line in your opengl32.cfg or d3d.cfg file:

gl_polyoffset 0.1

If this doesn't work, try -0.1, 1 or 20. This tells the driver how far to offset the decal from the surface of the polygon that the decal is being applied to.

Direct3D or OpenGL are running very slow. On some cards that don't fully support Direct3D or OpenGL, Half-Life will fall back to a software emulation mode. These modes are very slow. If your Direct3D support is slow, try selecting OpenGL, and vice versa. If neither work, change your settings to use Half-Life's software video mode instead and the speed will improve.

Direct3D input seems lagged. If your input seems to lag behind the visual display on occasion, add this line to your d3d.cfg file:

gl_d3dflip 1

Note: The latest release of DirectX, version 6.0, is included on the Half-Life CD. It should be automatically installed as part of the Half-Life installation process. If you need to reinstall at a later time, open the DirectX folder on your Half-Life installation CD and run dxsetup.exe.