L4D2 VR Prototype

Use this mod at your own risk of getting VAC banned. Use the -insecure launch option to help protect yourself.

Video demo

Things that work

• Singleplayer w/ bots
• 6DoF VR view
• Motion controls for guns
• Multiplayer (only if the host has the mod and the server is set to local)

Things that need fixing

• GUI/HUD is broken (use arrow keys to navigate pause menu)
• Melee weapons and interactions require you to aim with your face
• No roomscale movement
• CPU is underutilized

How to use

1. Download L4D2VR.zip and extract the files to your Left 4 Dead 2 directory (steamapps\common\Left 4 Dead 2)
2. Launch SteamVR, then launch Left 4 Dead 2 with these launch options:
   • -insecure -window -novid +mat_motion_blur_percent_of_screen_max 0 +crosshair 0
3. In settings, turn off vsync and multicore rendering, and set the display to windowed mode. The rest of the settings are up to you.
4. Load into a campaign and press A on your controller (or F6) to activate VR.
5. If the camera starts clipping into walls, press down on the left stick to recenter.

Troubleshooting

If the game is stuttering, try:

• Steam Settings -> Shader Pre-Caching -> Allow background processing of Vulkan shaders

If the game is crashing, try:

• Lowering video settings
• Disabling SteamVR theater in Steam settings
• Disabling all add-ons then verifying integrity of game files
• Re-installing the game

Build instructions

1. git clone --recurse-submodules https://github.com/sd805/l4d2vr.git
2. Open l4d2vr.sln
3. Set to x86 Debug or Release
4. Build -> Build Solution

Note: After building, it will attempt to copy the new d3d9.dll to your L4D2 directory.

Utilizes code from

• VirtualFortress2
• gmcl_openvr
• dxvk
• source-sdk-2013