HLOD system

It can replace multiple Static Mesh Actors with single, combined Static Mesh Actor at long view distances. This helps reduce the number of Actors that need to be rendered for the scene, increasing performance by lowering the number of draw calls per frame.

Render image	Show draw calls	Show draw calls of HLOD

Here is the result what the HLODSystem how can be helped it.

	DrawCalls	Tris
Normal	5642	8.0M
HLOD	952	3.9M
Rate	16.87%	48.75%

Prerequisites

Unity

Unity Version: 2021.3.3f1

Currently, I developed in 2021.2.19f1. Probably it works on the 2020.3 but I can't guarantee.

Git

You need Git Client which can work with GitHub.

If you don't have Git installed on your machine, download and install it from Git Home.

Connecting to GitHub with SSH

To clone the project, your Git must be configured to work with SSH Authentication, as HLODSystem uses SSH Authentication to work with Git Submodules. Check this link to set up your git to use SSH to connect to GitHub.

Getting the project

Cloning

The project uses a number of other projects as dependencies, and they are included into it as Git Submodules. To have a fully working project, you should those submodules included into the project after you clone the project.

First, run the following command to clone the project:

$ git clone [email protected]:Unity-Technologies/HLODSystem.git

After cloning is finished, navigate to the root folder of the project, and run the following command to initialize and clone all submodules:

$ git submodule update --init --recursive

How to use

Please refer to this document: https://docs.google.com/document/d/18HgBIr8oJweKaXtsIHZlh0s5HuXvQVmVfVcMPHAYS1A/edit#

Also, you can see this project to how to apply to 3D game kit.

License

Copyright (c) 2019 Unity Technologies ApS Licensed under the Unity Companion License for Unity-dependent projects see Unity Companion License. Unless expressly provided otherwise, the Software under this license is made available strictly on an “AS IS” BASIS WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. Please review the license for details on these and other terms and conditions.

Document: https://docs.google.com/document/d/1OPYDNpwGFpkBorZ3GCpL9Z4ck-6qRRD1tzelUQ0UvFc