Gaussian Splatting

Standalone runtime Gaussian Splatting support for Unity.

Requirements

• Unity 6.3 or later
• Input System 1.11.2

Installation

Install the package from npm by adding the npm registry to your project's Packages/manifest.json:

{
  "scopedRegistries": [
    {
      "name": "koiusa",
      "url": "https://registry.npmjs.org",
      "scopes": ["com.koiusa"]
    }
  ],
  "dependencies": {
    "com.koiusa.gaussiansplatting": "0.2.2"
  }
}

The npm package automatically installs its com.koiusa.placement dependency.

Alternatively, install both packages from Git by adding the following entries to your project's Packages/manifest.json:

{
  "dependencies": {
    "com.koiusa.placement": "https://github.com/koiusa/GaussianSplatting.git?path=/Assets/com.koiusa.placement",
    "com.koiusa.gaussiansplatting": "https://github.com/koiusa/GaussianSplatting.git?path=/Assets/com.koiusa.gaussiansplatting"
  }
}

Contents

The Gaussian Splatting package contains the renderer, PLY parser, GPU/CPU sorting, GPU frustum culling, shaders, and the default material. Reusable transform placement and manipulation components are provided by the separate com.koiusa.placement package.

Optional integrations

• Add GaussianSplatOffAxisController beside GaussianSplatRenderer when an Off-Axis system overrides the camera view/projection matrices. Without it, the renderer uses the normal camera transform and has no Off-Axis-specific behavior.
• Add GaussianMeshShadowRenderer only when MMD or another animated mesh should cast a shadow onto the splats. Assign its ShadowSource from the project-specific model adapter; the base renderer does not depend on LibMMD.