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Discover how to configure projects, materials, and shaders to use the Lightweight Render Pipeline for better real-time performance.

Creating LWRP Materials - 2019.2

LWRP stands for “Lightweight Render Pipeline,” which aims to optimize real-time performance on performance-constrained platforms, such as mobile devices or low-end consoles and PCs. It does this by making some tradeoffs in the lighting and shading sections of the pipeline. In this tutorial, you will learn about creating and updating projects, materials, and shaders to use LWRP. 

. If you are using Unity 2019.3 or above, 

Introduced in Unity 2018.1, the Lightweight Render Pipeline (LWRP) aims to optimize real-time performance on traditionally performance-constrained platforms, such as mobile devices or low-end consoles and PCs. It does this by making some tradeoffs in the lighting and shading sections of the pipeline.

If you wish to target a wide range of mobile devices, virtual reality, or your project has a limited need for real-time lighting, then using LWRP will be incredibly beneficial.

Introduction

 Name your project and set the location for the project.

Once that’s done, your new Unity Project with the LWRP will be ready to go.

Creating a new project with LWRP

To upgrade an existing project, first download LWRP using Unity’s Package Manager.

 Find “Lightweight RP” in the list and select it.

After the package has been installed from the Package Manager, you have to add the Lightweight Asset to the Scriptable Render Pipeline Graphics settings field.

Open the Project settings window by clicking 

Select Player settings on the left side of the new window.

Create a pipeline asset by selecting the Asset dropdown and select 

Select Graphic settings on the left side of the new window.

In the Graphics Inspector, drag and drop 

 into the Scriptable Render Pipeline field. (

 With that done, your existing project will now use LWRP. 

Upgrading an existing project to use LWRP

The LWRP has its own process for rendering and requires shaders that are written with that in mind. Unity developed a new set of Standard Shaders that are located in a new category. 

Right-click inside of your Project and go to 

Click the Shader dropdown under New Material in the Inspector window.

Go to LightweightPipeline to expand the submenu for the available shaders. (

Creating LWRP Materials

You will notice there are several shaders to select from.

: The Lit Shader lets you render real-world surfaces like stone, wood, glass, plastic, and metals in photo-realistic quality. Your light levels and reflections look lifelike and react properly across various lighting conditions, for example bright sunlight, or a dark cave. This Shader uses the most computationally heavy

 Use this Shader when performance is more important than photorealism. This Shader uses a simple approximation for lighting.

 Use this Shader for stylised games or apps that only require baked lighting via lightmaps and Light Probes. This shader does not use Physically Based Shading and has no real-time lighting, so all real-time relevant shader keywords and variants are stripped from the Shader code, which makes it faster to calculate.

: Replaces the legacy mobile/lit shaders. It performs a non-energy conserving Blinn-Phong shading and should be used for games that target devices with limited bandwidth.

: An unlit shader with the option to sample Global Illumination. This replaces Unity’s stock unlit shaders.

: Contains the same three lightweight shaders for your particles.

: The same as Unity’s stock terrain shader.

2D: Use this shader when developing 2D projects.

Nature: Contains shaders specialized for Speed Trees.

Autodesk Interactive: Shaders optimized to provide live updates to your shaders when you make an adjustment in an Autodesk application, and vice versa.

All Unity unlit stock shaders work with the Lightweight Pipeline, which means you can use legacy particles, UI, skybox, and sprite shaders with the pipeline with no additional setup required. Also, when the LWRP is set as the active render, all the game objects will be created with the correct shaders — the pipeline will override the default materials.

Lightweight Pipeline Shaders

To upgrade stock lit shaders to Lightweight shaders:

 > Upgrade Project Materials to Lightweight Materials or Upgrade Selected Materials to Lightweight Materials.

A window will pop up warning you that the upgrade will overwrite Materials in your project. Ensure you have made backups before proceeding and then click 

 This process will upgrade all Materials in the project or only the Materials you’ve selected. 

Upgrading Materials

Now you should have a better understanding of how to create and upgrade existing projects and materials to the LWRP. This pipeline is focused on performance and usability, allowing developers to create projects for performance-constrained platforms. 

Unity バージョン 2019.2