Shader.isSupported

説明

エンドユーザーのグラフィックスカード上で実行できるかどうか（読み取り専用）

Returns true if the shader itself or any fallbacks setup in the shader are supported. Most often you use this when implementing special effects. For example, image effects automatically disable themselves if the shader is not supported.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Start() {
        Renderer rend = GetComponent<Renderer>();
        if (!rend.material.shader.isSupported)
            rend.enabled = false;
        
    }
}

関連項目: Material class、ShaderLab ドキュメント.