🚀 gpupatch

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

📥 Direct Download (Fastest)

For standard users, bypass the command line entirely:

⚡ 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.

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.

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

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

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).

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

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

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

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

To undo the patch:

gpupatch <input.exe> --disable

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

cargo test