Setup

beginner concepts

Radiant GI (URP) · Core Concepts

URP Setup Guide

This page covers the full installation and configuration of Radiant GI for the Universal Render Pipeline.

Prerequisites

RequirementDetails
Unity version2022.3 LTS or newer
Render pipelineA URP asset must be assigned in Project Settings > Quality and/or Project Settings > Graphics.

Step 1 — Add the Renderer Feature

  1. Go to Project Settings > Quality and double-click the URP asset assigned to each quality level.
  2. In the URP Asset Inspector, double-click the Renderer asset to select it.
  3. In the Renderer Inspector, click "+" under Renderer Features and add Radiant Render Feature.
Important: URP assets can be assigned in both Project Settings > Graphics and Project Settings > Quality. Make sure you add the Renderer Feature to all active Renderer assets used across quality levels.

Step 2 — Choose the rendering path

In the Radiant Render Feature Inspector, select the rendering path:

PathDescription
ForwardWorks with URP forward rendering. GI quality is good but dark objects may appear slightly washed out.
DeferredRecommended. Uses albedo and specular data from the g-buffers for the most accurate and realistic results.
BothAutomatically adapts to whatever rendering path the camera uses.
Tip: If you choose Deferred in Radiant, make sure your URP Renderer is also configured for deferred rendering path.

Optional — Ignore Post Processing

The Radiant Render Feature includes an Ignore Post Processing option. When enabled, Radiant GI will execute even if post-processing is disabled on the camera. This is useful for performance: disabling post-processing on the camera saves a full-screen blit, while Radiant still renders independently.

Step 3 — Add the Volume Override

  1. In your scene, create or select a Volume (Global or Local).
  2. Click Add Override > Radiant Global Illumination.
  3. Customize the settings (see the Parameters Reference for details on every option).
Local Volumes: You can use multiple volumes to apply different GI settings in different areas of your scene. For example, reduce intensity outdoors and increase it indoors. Enable Limit to Volume Bounds to restrict GI strictly within a local volume's boundaries.

Quick Test with Demo Settings

The package includes a ready-to-use URP asset in the RadiantGI/Demos/URP Settings folder. You can use it to quickly verify that the installation is correct before configuring your own pipeline asset.

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