Setting Up Portal for RTX Remix Compatibility#

Important

Portal with RTX is required for this tutorial.

Ensure that both Portal and Portal with RTX are installed and fully updated.

Many games require specific modifications to properly integrate with the RTX Remix Runtime. In the case of Portal, the following modifications, implemented in Portal with RTX, enhance compatibility with RTX Remix. Other Source Engine games (such as Half-Life 2) will also necessitate similar configuration steps to achieve RTX Remix compatibility.

Warning

These steps should be considered specific to making Portal compatible.

Copying Required Files#

  1. CFG Folder Backup: Navigate to the Portal cfg folder (common\Portal\portal\cfg) and rename it (e.g., to original-cfg) to preserve the original data.

  2. CFG Contents Copy: Copy all files from the Portal with RTX cfg folder ( common\Portal with RTX\portal_rtx\cfg) and paste them into the Portal cfg folder (common\Portal\portal\cfg).

  3. BIN Folder Backup: Similarly, go to the Portal bin folder (common\Portal\bin) and rename it (e.g., to original-bin) to preserve the original data.

  4. BIN Contents Copy: Copy all files from the Portal with RTX bin folder (common\Portal with RTX\bin) and paste them into the Portal bin folder (common\Portal\bin).

  5. Configuration Files Copy: Copy the files named rtx.conf and dxvk.conf from the Portal with RTX folder (common\Portal with RTX) and paste them into the Portal folder (common\Portal).

  6. RTX Remix Runtime Files Copy: Copy the latest RTX Remix Runtime files to common\Portal\bin, overwriting any existing files if prompted.

Updating Game Variables#

After launching the game from the Steam library, certain variables may need to be set. These can be configured via the in-game developer console or Steam launch options.

  1. Set dxlevel to 70

  2. Set r_3dsky to 0

  3. Set viewmodel_fov to 90

  4. Set cl_first_person_uses_world_model to 0

Steam Launch Options#

  1. Open Steam.

  2. Go to the “Library.”

  3. Right-click the game to be reconfigured.

  4. Select “Properties…” from the menu.

  5. Go to the “Launch Options” section.

  6. Remove any launch options currently displayed in the input box.

  7. Set the launch options as detailed above. The Steam Launch Options should appear as follows:

    -dxlevel 70 -r_3dsky 0 -viewmodel_fov 90 -cl_first_person_uses_world_model 0

Tip

Launching the game with different DirectX levels may resolve certain issues but could introduce problems in other games.

To change the DirectX Level Launch Options, use the following variable values:

  1. -dxlevel 90 (DirectX v9.0)

  2. -dxlevel 81 (DirectX v8.1)

  3. -dxlevel 80 (DirectX v8.0)

  4. -dxlevel 70 (DirectX v7.0)

Launching the Game#

Portal should now be playable with RTX Remix.

To launch the game, launch it normally from the Steam library.

For assistance with setting up RTX Remix for other games, visit the RTX Remix Showcase Discord Community and check out the remix-projects channel.

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