Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!ucsd!cogsci!lopes
From: lopes@cogsci.ucsd.EDU (alann lopes)
Newsgroups: comp.sys.mac.programmer
Subject: How can I display graphics FAST?
Keywords: Graphics, pixel maps,copybits
Message-ID: <246@cogsci.ucsd.EDU>
Date: 2 Jan 91 17:01:08 GMT
Organization: University of California, San Diego
Lines: 26


  Hello everyone, 

  I need to dispaly images very fast on a Mac II, to 
  do some psychology experiments. I'm hoping for speeds <= 25 ms. How
  can I do this?  I've tryed building offscreen pixmaps and then
  using copybits. This method is just too slow! I want to stay away
  from palette tricks, because often I will need to display five or
  more images.

  I heard that the graphics card on the Mac II actually has two video
  pages, and that you can switch between them very fast ( on the
  order of what I need). The problem is that I haven't been able to
  find any documentation on how to do this, or if it's even possible.
  I've called Apple with no results.  Can somebody HELP ME PLEASE?
  

               Thanks very much -- alann


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   alann lopes:        alopes@ucsd.edu       -- internet
   Programmer/Analyst  lopes@cogsci.ucsd.edu -- internet
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