You can add a graph object into a mCL shader in below. A graph can be an avi video, a mp3 audio, or a jpeg picture.

• In the shader class declares a graph variable graph
  

  variable graph

• In InitDeviceObjects method of the shader class inserts lines
  

  set userid 0xACDCADCD
  set filename [$app dialog file "*.mp3" $initfolder] 
  set graph [$app graph $filename $userid]

• In the RestoreDeviceObjects method inserts following line that starts the graph.
  

  $graph start

• In the InvalidateDeviceObjects method inserts following line that ends the graph.
  

  $graph end

• In the DeleteDeviceObjects method inserts following line that free the graph.
  

  $graph release