ShaderUtil

Description

Utility methods to assist with working with shaders from the Editor.

This class contains methods you can use to do the following:

• Manage shader compilation. Refer to CompilePass.
• Create shader assets. Refer to CreateShaderAsset.
• Access common shader information. Refer to GetShaderData.

Additional resources: Shader, ComputeShader, RayTracingShader, ShaderData.

using UnityEditor;
using UnityEngine;
using UnityEngine.Rendering;

// Adds a new Editor menu item called Example. Select a shader
// asset in the Project window, then select
// Example > PrintLightModeTagExample from the Editor menu. The value of all
// "LightMode" tags present in any pass of the shader will be printed to
// the console.
public class PrintLightModeTagExample
{
    [MenuItem("Example/PrintLightModeTagExample")]
    static void MenuCallback()
    {
        // If the selected object is a shader...
        if (Selection.activeObject is Shader selectedShader)
        {
            // For each subshader...
            ShaderData selectedShaderData = ShaderUtil.GetShaderData(selectedShader);
            for (int subShaderIndex = 0; subShaderIndex < selectedShaderData.SubshaderCount; ++subShaderIndex)
            {
                // For each pass...
                ShaderData.Subshader subShaderData = selectedShaderData.GetSubshader(subShaderIndex);
                for (int passIndex = 0; passIndex < subShaderData.PassCount; ++passIndex)
                {
                    ShaderData.Pass passData = subShaderData.GetPass(passIndex);

                    // If the pass has a "LightMode" tag, print its value
                    ShaderTagId lightModeValue = passData.FindTagValue(new ShaderTagId("LightMode"));
                    if (lightModeValue != ShaderTagId.none)
                    {
                        Debug.Log($"Pass '{passData.Name}' in SubShader {subShaderIndex} of "
                            + $"Shader '{selectedShader.name}' has LightMode '{lightModeValue.name}'.");
                    }
                }
            }
        }
    }
}

Static Properties

Static Methods