Changelog:

Comp Mod:

• Emissive surfaces now support UV animations
• Fixed an issue with alpha-blended emissive surfaces being too transparent
• Fixed effect artifacts in front of emissive surfaces (#11)
• Now shipping a tweaked visualSettings.dat to adjusts some emissive intensities
• Added raindrops to character meshes and fixed characters getting wet inside + adjustable game settings (#12)
• Added raindrops to vehicles + adjustable game settings (#13)
• Fixed decals not getting wet when it rains
• The v-shaped sirens of police cars now spawn actual, spinning lights (the siren color is still wip)
• Added a new anti-cull option for interior objects. Nico's bed lamp should no longer get culled :)
• Fixed "texture issues" on vehicle rear lights that were caused by stochastic alpha blending
• Fixed a few white - emissive surfaces that were missing vertex colors
• Vehicle glass should now be transparent by default even if no translucent remix override is used (they will be missing reflections tho)
• Added a wip tab to the F4 menu
• Installer now requests UAC so manually starting with admin permissions is no longer required
• Updated the remix runtime to the very latest commit with gta iv changes on-top

Remix Mod:

• Fixed the translucent funfair stairs (#22)
• Made a few glass textures translucent (grotti, cafe)
• Added rain via a remix particle system which is attached to a map marker that follows the player (#23)
  • 4 rain variants in total. Heavy rain & light rain for day and night
  • wip ... collision detection isn't great so it might rain where it shouldn't.

Installation:

Install using the installer:

1. Download GTAIV-Remix-CompatibilityMod-1.1.0.zip

2. Download GTAIV-Remix-CompMod-Installer.exe

3. Place both files in the same folder (no need to copy them to your game folder) and run GTAIV-Remix-CompMod-Installer.exe

4. Use the File Dialog to select your GTAIV.exe which is located in your GTAIV install folder

5. The installer will ask if you want to install a custom Fork of FusionFix
   If you already have FusionFix installed, it's definitely recommended to install this because the original, unmodified version has a few incompatibilities with RTX Remix. If you do not have FusionFix installed, you are free to choose. It's not a requirement.

6. Make sure that you remove all custom launch arguments for GTAIV in Steam (if you have any set)

OR Install manually (no need to do this if you've used the installer):

1. Download GTAIV-Remix-CompatibilityMod-1.1.0.zip

2. Open the zip and extract all files contained inside the GTAIV-Remix-CompatibilityMod folder into your GTAIV directory (next to the GTAIV.exe). Overwrite all when prompted.

3. If you want to use FusionFix or have it installed already, it's definitely recommended to install my custom fork of FusionFix because the original, unmodified version has a few incompatibilities with RTX Remix.
   You can find the files inside _installer_options/FusionFix_RTXRemixFork. Extract the plugins & update into your GTAIV directory and override any existing files.

Usage and general Info

• Run the game like normal or use the provided batch files (mentioned further down) if you notice heavy stuttering.

• It's recommended to adjust distance and quality sliders in the GTA4 graphic options (higher values => earlier CPU bottleneck).
  Try 30 for view distance and 50 for quality and adjust from there. The first launch might cause problems, simply re-try a second time.

  Press Alt + X to open the Remix menu
  Press F4 to open the Compatibility Mod menu

Troubleshooting / Tips

• Running Windowed
  Open the commandline.txt in the main game folder and add -windowed

  If using FF: Adjust the Borderless setting in the game options to your liking
  (plugins/GTAIV.EFLC.FusionFix.cfg -> BorderlessWindowed = 0/1)

• Forcing a Resolution (if something goes wrong with resolution selection)
  Either go to your GTAIV folder and open rtx_comp/game_settings.toml (after running the game once)

  • Set manual_game_resolution_enabled to true
  • Adjust the resolution using manual_game_resolution = [ .. ]

  OR Open the commandline.txt in the main game folder and add -width 1920 and -height 1080 (adjust for your resolution)

• Crashing on startup or similar
  Please try the following before creating an issue on GitHub:
  1. Make sure that you try the mod on a fresh, clean install - do not install FusionFix before installing the mod
  2. Try to install the game in a path that is not inside Program Files
  3. Make sure that you have no custom launch arguments for GTAIV defined in steam

Issues / Performance / Tweaks

• Stuttering
  If you notice heavy stuttering, launch the game with the included _LaunchWithProcessorAffinity_2Cores_GTA4.bat
  Doing this will assign 2 cores to GTA4 and the rest to Remix.
  If you want a 50/50 split, use _LaunchWithProcessorAffinity_Half_GTA4__Half_Remix.bat

• Lower Pathtracing settings
  Open the Remix menu by pressing Alt + X and use Graphics Settings Menu at the top.
  Switch to the Graphics tab and adjust the Graphics Preset dropdown to adjust various quality settings

• Alpha Settings for Trees
  Open the CompMod menu by pressing F4 and open the Rendering Related Settings container under the Game Settings tab.
  Increasing the Tree Alpha Cutout Value value will improve performance but will make leafs look more blocky.

Notes

• The release includes a custom remix runtime build that contains a few necessary changes.
  Current active branch is this one: https://github.com/xoxor4d/dxvk-remix/tree/game/gta4_rebase5