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Portal RTX Adjustments

This guide assumes you have already installed the NVIDIA Bridge and DXVK and are currently in your Dark Messiah directory

Portal RTX Bridge

Due to the Portal RTX Bridge being tailor made to work with the source engine, and especially those older executables, we need to install the bridge client.

Prepackaged Core Files

For speed of installation, we have packaged together the core NVIDIA Bridge files from the Portal RTX release. This is the most recent as of June 16th 2023 and may be subject to change. If you would like the latest file, carry on reading. Otherwise, you can simply download this zip and move on.

Core Files: https://cdn.discordapp.com/attachments/960897817176588348/1119193864654291024/portal_rtx_core.zip

If you do not care about having a potentially outdated NVIDIA Bridge, you can use this

Installing Portal RTX

If you haven't already, you need to install Portal RTX from Steam. You can do so by heading over to the steam page and clicking install. Portal RTX is free for all to download, regardless of if you own Portal!

Steam Page: https://store.steampowered.com/app/2012840/Portal_with_RTX/

Finding your Portal RTX Binary Directory

As this is a steam release, you'll want to head over to the Steam installation of Portal RTX and go through the bin/ folder. The directory will be something like Steam/common/Portal RTX/bin

As an example, my copy is located in E:\Program Files\Steam\steamapps\common\Portal RTX\bin

It is recommended that you launch the game at least once to make sure all files have correctly loaded in.

Grabbing the Bridge Binaries

There will be a lot of binary files here, but we are only looking for two.

The first is d3d9.dll

The second is NvRemixBridge32.dll

Copy both of these files to your Dark Messiah of Might and Magic Single Player directory. It will sit along side your mm.exe file. Overwrite any conflicts.

Grabbing the Bridge Executable

Now that we have binaries, we need the Bridge executable so we can finally launch the game. In the Portal RTX/bin folder you will now need to navigate into the .trex folder. You will find a bunch of files here, but we are only taking the NvRemixBridge.exe file.

Copy it and put it into your Dark Messiah of Might and Magic Single Player/.trex directory and make sure to overwrite any conflicts. Note that we are now putting this .exe into the .trex folder, not the main Dark Messiah folder!

Dark Messiah RTX