Select a shader parameter from a shader, material or renderer. (Requires Unity 2021.2+)

It supports string/ShaderParam fields and saves the shader parameter.

Parameters:

• [Optional] string name: the target. Be a property or a callback that returns a shader, material or renderer. When omitted, it will try to get the Renderer component from the current component.
• [Optional] ShaderPropertyType propertyType: filter the shader parameters by type. Omitted to show all types.
• [Optional] int index=0: which material index to use when the target is a Renderer.

[ShaderParam] public string shaderParamString;
[ShaderParam(0)] public string shaderParamAtIndex;
[ShaderParam(ShaderPropertyType.Texture)] public string shaderParamFilter;

[Separator("By Target")]
[GetComponent] public Renderer targetRenderer;

[ShaderParam(nameof(targetRenderer))] public string shaderParamRenderer;

private Material GetMat() => targetRenderer.sharedMaterial;
[ShaderParam(nameof(GetMat))] public string shaderParamMat;

private Shader GetShader() => targetRenderer.sharedMaterial.shader;
[ShaderParam(nameof(GetShader))] public string shaderParamShader;

It's recommended to use ShaderParam type because it can auto convert to hash id, which is much faster than using string.

public ShaderParam shaderParamType;
// attribute is also supported
[ShaderParam(ShaderPropertyType.Float)] public ShaderParam shaderParamTypeWithFilter;

private void Awake()
{
    // directly put into `Set*()` in material, it'll convert & cache the hash id
    material.SetFloat(shaderParamTypeWithFilter, 2f);
}

It works with ShowInInspector

[ShowInInspector, ShaderParam]
public string ShowShaderParamString
{
    get => shaderParamString;
    set => shaderParamString = value;
}

It works with ShowInInspector/Button parameters and return value

[ShowInInspector]
private string ShowShaderParam([ShaderParam] string shaderS) => shaderS;

[Button]
private string ShowShaderParam([ShaderParam] string shaderS) => shaderS;