Unity URP" stands for Unity Universal Render Pipeline. It is a lightweight, more easily configurable rendering pipeline that comes with a suite of renderer features and is designed to be scalable across various platforms.
URP aims to provide great graphics performance whether you’re on a high-end PC or a mobile device. It's optimized for work with less powerful hardware and offers a balance between rendering capabilities and performance.
Here's how you might typically set up the URP in a Unity project:
Assets > Create > Rendering > Universal Render Pipeline > Pipeline Asset.
Edit > Project Settings > Graphics, setting the "Scriptable Render Pipeline Settings" to your newly created URP asset.
An example of creating and setting up a URP asset through script might look like this:
Keep in mind that with URP, you can also customize the renderer for different platforms and use a wide range of shader graph features that come built-in. It's worth noting that when switching to URP, you may need to upgrade existing shaders or materials in your project to be compatible with URP.
URP is part of Unity's Scriptable Render Pipeline (SRP) technology, which allows developers to customize the rendering pipeline according to their specific game needs. SRP provides a C# API for creating custom rendering loops, of which URP is a pre-built implementation geared towards broad platform support and ease-of-use.