OptiScaler (was CyberXeSS) is drop-in DLSS2 to XeSS/FSR2 replacement for games.

This project is based on PotatoOfDoom's excellent CyberFSR2.

Official Discord Server: DLSS2FSR

Do not use this mod with online games, it might trigger anti-cheat software and cause bans!

How it works?

OptiScaler implements all necessary API methods of DLSS2 & NVAPI to act as a man in the middle. So from games perspective it's using DLSS2 but actually using OptiScaler and calls are interpreted/redirected to XeSS & FSR2.

Features

• Multiple upscaling backends (XeSS, FSR 2.1.2 and FSR 2.2.1)
• Supports XeSS v1.3's new modes (Ultra Performance, NativeAA), but uses standard DLSS/FSR internal resolutions (not using XeSS 1.3 Performance (2.3x) mode, not matching any of the DLSS quality presets).
• An in-game menu for tuning and saving settings (Only on DirectX 11 & DirectX 12 APIs, shortcut key is HOME)
• Full integration with DLSS Enabler for DLSS-FG support
• CAS (Contrast Adaptive Sharpening) support for XeSS to mitigate relatively soft image upscaler generates
• Pseudo-supersampling option for backends running on DirectX 12
• Autofixing colored lights on Unreal Engine & AMD graphics cards
• Autofixing wrong motion vector init information
• Autofixing missing exposure texture information
• Ability to modify MipmapLodBias value of game

Configuration

Please check this document for configuration parameters and explanations.

Known Issues

Please check this document for known issues and possible solutions for them.

Which APIs and Upscalers are Supported?

Currently OptiScaler can be used with DirectX 11, DirectX 12 and Vulkan but each API has different sets of upscaler options.

For DirectX 11

• FSR2 2.2.1 native Direct11 implementation (Default upscaler)
• XeSS 1.x.x with background DirectX12 processing [*]
• FSR2 2.1.2 with background DirectX12 processing [*]
• FSR2 2.2.1 with background DirectX12 processing [*]

[*] This implementations uses a background DirectX12 device to be able to use Dirext12 only upscalers. There is %10-15 performance penalty for this method but allows much more upscaler options. Also native DirectX11 implementation of FSR 2.2.1 is a backport from Unity renderer and has it's own problems which some of them avoided by OptiScaler.

For DirectX 12

• XeSS 1.x.x (Default upscaler)
• FSR2 2.1.2
• FSR2 2.2.1

For Vulkan

• FSR2 2.1.2 (Default upscaler)
• FSR2 2.2.1

Installation

• Download the latest relase from releases.
• Extract the contents of the archive next to the game executable file in your games folder. [1]
• Run EnableSignatureOverride.reg and confirm merge. [2][3]
• DLSS option should be appeared/enabled in games settings. If it's not, you may try using methods explained here.

[1] This package contains latest version of libxess.dll and if game folder contains any older version of same library it would be overwritten. Consider backing up or renaming existing file.

[2] Normally Streamline and games check if nvngx.dll is signed, by merging this .reg file we are overriding this signature check.

[3] Adding signature override on Linux - There are many possible setups, this one will focus on steam games:

• Make sure you have protontricks installed
• Run in a terminal protontricks regedit, replace with an id for your game
• Press "registry" in the top left of the new window -> Import Registry File -> navigate to and select EnableSignatureOverride.reg
• You should see a message saying that you successfully added the entries to the registry

If your game is not on Steam, it all boils down to opening regedit inside your game's prefix and importing the file.

Uninstallation

• Run DisableSignatureOverride.reg file
• Delete EnableSignatureOverride.reg, DisableSignatureOverride.reg, nvngx.dll, nvngx.ini files
• If there were a libxess.dll file and you have backed it up delete the new file and restore the backed up file. If you have overwrote old file DO NOT delete libxess.dll file. If there were no libxess.dll file it's safe to delete.

Compilation

Requirements

• Visual Studio 2022

Instructions

• Clone this repo with all of its submodules.
• Open the OptiScaler.sln with Visual Studio 2022.
• Build the project

Thanks

• @PotatoOfDoom for CyberFSR2
• @Artur for DLSS Enabler and helping me to implement NVAPI correctly
• @LukeFZ & @Nukem for their great mods and sharing their knowledge
• @FakeMichau for support, testing and feature creep
• @QM for continous testing efforts and helping me to reach games
• @Cryio, @krispy, @krisshietala, @Lordubuntu, @scz, @Veeqo for their hard work on compatibility matrix
• @RazzerBrazzer and DLSS2FSR community for all their support