penguinliong / taichi-unity2

Taichi Unity Native Plugin

This repository provides extension APIs listed in taichi/taichi_unity.h in the main Taichi repository. To build this plugin you can either manually or with Visual Studio.

Prerequisites

You need to set up environement variable TAICHI_REPO_DIR to the root directory of Taichi. For example, if you cloned Taichi with:

cd /path/to/respositories
git clone https://github.com/taichi-dev/taichi

Then you should set TAICHI_REPO_DIR to /path/to/respositories/taichi.

Build with Visual Studio

We recommend you to build with Visual Studio for debugging.

1. Open this directory in Visual Studio 2019+ with CMake Integration installed;
2. Wait for auto-configuration to complete;
3. Choose taichi_unity.dll (bin/taichi_unity.dll) in the drop-down list to the right of the green play button (▶).
4. Pick up your built library in out\build\x64-Debug\bin.

Note that if you also want to debug with symbols of taichi_c_api.dll, you need to build Taichi with Visual Studio CMake Integration too for the best experience.

Build with CMake

Run the following commands to build taichi_unity without Visual Studio.

mkdir build
cd build
cmake .. -DTAICHI_C_API_INSTALL_DIR="$env:TAICHI_REPO_DIR/build"
cmake --build .

Then you will find taichi_unity.dll in build/bin/Debug.

Integration to Unity

Copy taichi_unity.dll to Assets/Plugins/x86_64 of your Unity project. Language bindings (function interface and marshalling codes) can be generated with misc/generate_unity_language_binding.py in the main Taichi repository.