High-performance GPU-accelerated C# scripting for Rhino Grasshopper, powered by ILGPU.
Macho is a C# scripting component for Rhino Grasshopper that enables users to write and execute GPU-accelerated parallel code directly inside Grasshopper, using ILGPU.
It allows you to write custom GPU kernels, compile them in real-time, and leverage the massive parallel computing power of modern GPUs — all within the Grasshopper environment.
Macho is designed to make GPU programming accessible to designers, developers, and technical artists without the need to build separate .gha plugins or precompiled libraries.
You can customize and experiment with GPU kernels directly in your Grasshopper definitions.
Macho builds upon and extends the excellent work of HotLoader by @camnewnham.
HotLoader manages the Visual Studio integration, source code editing, and real-time compilation workflow — allowing users to edit and compile C# code directly inside Grasshopper.
Macho enhances this workflow by integrating ILGPU support, enabling GPU kernel scripting, compilation, and execution in real-time.
Additionally, Macho adopts HotLoader’s distributable architecture: source code and compiled binaries are bundled into a ZIP file, embedded inside the Grasshopper .gh definition. This makes it easy to share and distribute custom GPU scripts — anyone can open your Grasshopper file and the scripts will just work, without any additional setup other than downloading the Macho plugin.
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GPU Kernel Scripting & Real-time Compilation
Write and execute ILGPU-based parallel code directly in Grasshopper. -
Customizable GPU Kernels & Memory Management
Fine-tune your GPU logic with direct access to ILGPU APIs. -
Intuitive API for Parallel Programming
Designed for ease of use without sacrificing performance. -
Visual Studio Integration
Built-in editing and debugging workflow based on HotLoader. -
Distributable Scripts
Source code and binaries are packed into your.ghfiles — no external dependencies required for others to run your scripts other than Macho.
- Rhino 7 or later
- Visual Studio 2019 or later
Macho is licensed under the Apache 2.0.
Acknowledgements
This project would not be possible without the foundational work of HotLoader by @camnewnham, which powers the real-time editing and compilation workflow in Macho.