Built-In Render Pipeline prebuilt shaders in URP reference

After you use the Material Shader Converter in the Render Pipeline Converter, Unity converts the selected prebuilt shaders to its corresponding Universal Render Pipleine (URP) shaders.

Note: This page is about converting prebuilt shaders to URP only. For more information on how to convert custom shaders to URP, refer to Convert custom shaders for URP compatibility.

Shader mapping

The following table shows which URP shaders the Built-In Render Pipeline shaders convert to when you use the Render Pipeline Converter.

Built-In Render Pipeline shader	URP shader
Standard	Universal Render Pipeline/Lit
Standard (Specular Setup)	Universal Render Pipeline/Lit
Standard Terrain	Universal Render Pipeline/Terrain/Lit
Particles/Standard Surface	Universal Render Pipeline/Particles/Lit
Particles/Standard Unlit	Universal Render Pipeline/Particles/Unlit
Mobile/Diffuse	Universal Render Pipeline/Simple Lit
Mobile/Bumped Specular	Universal Render Pipeline/Simple Lit
Mobile/Bumped Specular(1 Directional Light)	Universal Render Pipeline/Simple Lit
Mobile/Unlit (Supports Lightmap)	Universal Render Pipeline/Simple Lit
Mobile/VertexLit	Universal Render Pipeline/Simple Lit
Legacy Shaders/Diffuse	Universal Render Pipeline/Simple Lit
Legacy Shaders/Specular	Universal Render Pipeline/Simple Lit
Legacy Shaders/Bumped Diffuse	Universal Render Pipeline/Simple Lit
Legacy Shaders/Bumped Specular	Universal Render Pipeline/Simple Lit
Legacy Shaders/Self-Illumin/Diffuse	Universal Render Pipeline/Simple Lit
Legacy Shaders/Self-Illumin/Bumped Diffuse	Universal Render Pipeline/Simple Lit
Legacy Shaders/Self-Illumin/Specular	Universal Render Pipeline/Simple Lit
Legacy Shaders/Self-Illumin/Bumped Specular	Universal Render Pipeline/Simple Lit
Legacy Shaders/Transparent/Diffuse	Universal Render Pipeline/Simple Lit
Legacy Shaders/Transparent/Specular	Universal Render Pipeline/Simple Lit
Legacy Shaders/Transparent/Bumped Diffuse	Universal Render Pipeline/Simple Lit
Legacy Shaders/Transparent/Bumped Specular	Universal Render Pipeline/Simple Lit
Legacy Shaders/Transparent/Cutout/Diffuse	Universal Render Pipeline/Simple Lit
Legacy Shaders/Transparent/Cutout/Specular	Universal Render Pipeline/Simple Lit
Legacy Shaders/Transparent/Cutout/Bumped Diffuse	Universal Render Pipeline/Simple Lit
Legacy Shaders/Transparent/Cutout/Bumped Specular	Universal Render Pipeline/Simple Lit

Define upgrade paths for shaders

To define upgrade paths for shaders, do the following:

Map an old shader to a new one with a custom MaterialUpgrader.
Expose the upgrader to the system with IMaterialUpgradersProvider.

// This class defines the upgrade rule from an old shader to a new shader
public class MaterialUpgraderExample : MaterialUpgrader
{
    // Priority determines order — higher values override lower-priority upgraders
    public int priority => 1000;
    public MaterialUpgraderExample(string oldShaderName, string newShaderName)
    {
        if (oldShaderName == null)
            throw new ArgumentNullException(nameof(oldShaderName));

        // Maps the old shader to the new shader with optional property remapping (null here)
        RenameShader(oldShaderName, newShaderName, null);
    }
}

// This provider makes the upgrader discoverable by the upgrader system.
// It declares support for the Universal Render Pipeline and exposes the custom upgrade rule.
[SupportedOnRenderPipeline(typeof(UniversalRenderPipeline))]
private class ExampleMaterialProvider : IMaterialUpgradersProvider
{

    public IEnumerable<MaterialUpgrader> GetUpgraders()
    {
        // Replace "SomePathToShader" and "MappingShaderPath" with actual shader names/paths
        yield return new MaterialUpgraderExample("SomePathToShader", "MappingShaderPath");

        // Add as many upgraders you need
    }
}

Additional resources

Built-In Render Pipeline material references in URP reference

Built-In Render Pipeline quality settings in URP reference