Green Instance Renderer

Green Instance Renderer – BRG Renderer & Culling System for Unity

Online Documentation

A lightweight, code-driven GPU instance renderer built on Unity's Batch Renderer Group (BRG).

Green Instance Renderer makes high-performance mesh instancing accessible in just three function calls — no inspector setup, no complex configuration. Register your meshes, upload your transforms, and let the GPU handle the rest.

How It Works

- Call Generate to make an uploader, this will return the uploader ID

- Call Register with the uploader ID, the max amount of objects to render, the mesh you wish the uploader to use and if it should be Lit or Unlit, it needs 3 mesh for LODs

- Call Upload with the ID and the positions you wish to render

That's it. Instances are rendered immediately, with LOD, shadows, and culling handled automatically.

Features

• Up to 3 LOD meshes per registration
• Multi-submesh support — each submesh has independent visual controls
• Lit and Unlit shader variants included
• Custom shaders with per-submesh visual customization: saturation, contrast, brightness, normal map, wind influence, subsurface, rim light, shadow color, etc
• Built on Unity's Batch Renderer Group (BRG) for maximum GPU instancing efficiency
• Jobs-based parallel culling for both camera and shadow pass
• Burst-compiled culling jobs via injected scheduler interface
• LOD-aware shadow culling with configurable shadow distance and radius
• Frame-skip support for culling jobs to reduce CPU overhead
• Runtime position and state updates — move, show, or hide instances at any time
• Per-submesh visual controls independent of each other
• Shadow casting and receiving controls per registration

Some demo scenes (WebGPU don't work on some browsers, Chrome based ones are recommended)

https://play.unity.com/en/games/93426df5-29be-4866-ba28-f12866b539ed/instance-re...

https://play.unity.com/en/games/91ddf759-cc33-4bc9-9327-475aaa9c45f1/v134-brg-te...