UnityEditor.ShaderUtil.GetAvailableShaderCompilerPlatforms C# (CSharp) Method

        internal static extern int GetAvailableShaderCompilerPlatforms();
        [MethodImpl(MethodImplOptions.InternalCall)]

 private static void InitializeShaderPlatforms()
 {
     if (s_ShaderPlatformNames == null)
     {
         int           availableShaderCompilerPlatforms = ShaderUtil.GetAvailableShaderCompilerPlatforms();
         List <string> list  = new List <string>();
         List <int>    list2 = new List <int>();
         for (int i = 0; i < 0x20; i++)
         {
             if ((availableShaderCompilerPlatforms & (((int)1) << i)) != 0)
             {
                 list.Add(((ShaderUtil.ShaderCompilerPlatformType)i).ToString());
                 list2.Add(i);
             }
         }
         s_ShaderPlatformNames   = list.ToArray();
         s_ShaderPlatformIndices = list2.ToArray();
     }
 }