This Unity sample project shows how to write a native plugin in the Rust language.
The sample plugin constructs the Mandelbrot set in a big array (1024x1024x4 byte) shared from a C# script. Then the C# script converts it into a 2D texture to draw on the screen. See the plugin code and the caller script for further details.
This project was inspired by Jim Flemming's article. It's recommended to check the article if interested in the topic.
The source code for the plugin is contained in the Plugin directory.
You can simply run build.sh to build the plugin.
There are some different approaches for Windows. I prefer using WSL2 and the cross-compilation target.
For cross-compilation from WSL2 to Windows, you have to install MinGW-w64 and
the x86_64-pc-windows-gnu target.
sudo apt install gcc-mingw-w64-x86-64
rustup target add x86_64-pc-windows-gnu
Now you can run build.sh.
Install the aarch64-apple-ios target.
rustup target add aarch64-apple-ios
Run build.sh with passing ios to build the plugin.
./build.sh ios
You have to install NDK and set the ANDROID_NDK environment variable to
specify the installation directory.
Then, install the aarch64-linux-android target.
rustup target add aarch64-linux-android
Run build.sh with passing android to build the plugin.
./build.sh android