Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!neat.cs.toronto.edu!mgreen
From: mgreen@cs.toronto.edu (Marc Green)
Newsgroups: comp.graphics
Subject: RE: IRIS ANIMATION QUESTIONS
Message-ID: <90Aug4.130538edt.7478@neat.cs.toronto.edu>
Date: 4 Aug 90 17:05:58 GMT
Organization: Department of Computer Science, University of Toronto
Lines: 13

I've received a number of responses to my question on IRIS animation.
Every one suggested the same solution: hide images in the back and z
buffers and lrectwrite to the front buffer. This is far too slow. 

It appears that the Personal IRIS is simply not very good for
animation. You can only copy a 200x200 area in one sweep. The only
reasonable way to do animation of large, complex scenes is to hardware
pan and scroll to by changing the entry point in memory. The IRIS,
strangely, does not have this feature, although it is common in lower
powered systems, such as those based on the TI34020 chip and other AT
boards.

Thanks to all who resonded