anchor.diff:  // *****************************************
   // *****************************************
   
  -type ShaderCache () =
  +type ShaderProgramCache () =
       let cache = Dictionary<string, ShaderProgram> ()
   
       member this.GetOrCreateShader (name: string) =
  
positive.code:             {
                  Buffer = buffer
              }
  
  // *****************************************
  // *****************************************
  
negative.code: 
  // *****************************************
  // *****************************************
  // Texture
  // *****************************************
  // *****************************************
  