##Screen('Preference', 'Verbosity', 0);
##Screen('Preference', 'SkipSyncTests',1);
##Screen('Preference', 'VisualDebugLevel',0);

try
  
  screen=0;
  [wPtr,rect]=Screen('OpenWindow',screen);
  HideCursor;
  black=BlackIndex(wPtr);
  white=WhiteIndex(wPtr);
  Screen('FillRect',wPtr,white);
  Screen(wPtr, 'Flip');
  tic
  while toc<5
  end
  
  disgustface = imread('040.tif');
  textureIndex=Screen('MakeTexture', wPtr, disgustface);
  ret=Screen('PreloadTextures', wPtr, textureIndex);
  Screen('DrawTexture', wPtr, textureIndex );
  Screen(wPtr, 'Flip');
  tic
  while toc<6
  end
  
  Screen('Close', wPtr);
  ShowCursor;
catch
  Screen('CloseAll');
  rethrow(lasterror)
end