🚀 gpupatch

A highly optimized, dependency-free native engine for hot-patching Windows executables to force high-performance discrete GPU utilization.

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📥 Direct Download (Fastest)

For standard users, bypass the command line entirely:

1. Click the green Download Latest Release button above.
2. Under Assets, download gpupatch-windows-amd64.exe.
3. Put it on your desktop and you're ready to go!

Features

• ⚡ Blazing Fast: Native Rust implementation with no external dependencies.
• 💉 Safe Injection: Seamlessly injects NvOptimusEnablement and AmdPowerXpressRequestHighPerformance symbols.
• 🔥 In-Place Patching: Intelligently toggles symbols on previously patched binaries.
• 🖥️ Built-in GUI: Includes a native graphical interface for easy management.

💡 Key Improvements Over nvpatch

This tool is a from-scratch rewrite built to address edge-cases in the original nvpatch tool:

• ✅ Strict PE Compliance: Correctly implements Binary Ordinal Sorting and header alignment.
• ✅ Stand-Alone Binary: Entirely bypasses the heavy .NET runtime install requirement.
• ✅ Antivirus Safe: Cleanses corrupt digital signatures to avoid heuristic malware traps.
• ✅ Neophyte-Friendly: Adds graphical drag-and-drop support with persistent lock-screens.

Installation

Option 1: Direct Install via Cargo (Recommended)

If you have Rust installed, you can compile and install globally with a single command:

cargo install --git https://github.com/CynToolkit/gpupatch.git

Option 2: Building from Source

git clone https://github.com/CynToolkit/gpupatch.git
cd gpupatch
cargo build --release

The compiled binary will be available at ./target/release/gpupatch (or gpupatch.exe on Windows).

Usage

🔥 For Standard Users (Easy Mode)

The application includes an interactive mode designed for ease of use:

1. Double-click the downloaded gpupatch.exe binary to launch the console window.
2. Drag and drop your target game or application executable directly onto the window.
3. Hit Enter. That's it! 🎉 (Alternatively, you can simply drag and drop an executable file directly onto the gpupatch.exe icon in Windows Explorer).

💻 For Power Users (CLI Mode)

To force an executable to utilize the dedicated high-performance GPU:

gpupatch <input.exe> [<output.exe>]

To undo the patch:

gpupatch <input.exe> --disable

Testing

The test suite includes unit test verification and deterministic parity simulation:

cargo test