From: furiop@vccsouth28.its.rpi.edu (Paul Joseph Furio)
Subject: Re: Imagine2.0 anims lagging... :(
Message-ID: <1#z1mwg@rpi.edu>
Nntp-Posting-Host: vccsouth28.its.rpi.edu
Reply-To: furiop@rpi.edu
Organization: Rensselaer Polytechnic Institute, Troy, NY.
References: <Bxz690.GDF@usenet.ucs.indiana.edu>
Date: Thu, 19 Nov 1992 19:23:22 GMT
Lines: 7
It sould like your problem is standard Delta Compression slowness. All anims that are feasable on the Amiga use Delta Compression, that is, they only store the changes from one frame to the next. If you have a ultrahires 50 billion color animation with almost no changes, it may run very fast. But if you have a lores anim with everty other pixel changing color each frame, it will run slowly. The only solutions are 1) get the fastest damn processor you can afford, 2) work in lower resolutions with less c
olors (less delta usually, except in case mentioned above which was for effect) 3) single frame it. Usually, the less data that must be uncompressed (lower resolutions and less colors) the faster it will run. Anims with a lot of camera motion also tend to run more slowly because by the nature of the program, moving the camera produces a lot of delta.
You can cheat the system verious ways. DCTV gives you apparantly many millions of colors but only works with an 8 or 16 color hires screen. This runs fairly fast, perhaps even faster than the same anim in overscanned HAM. Play around with different settings and different rendering techniques. When Brad Schenk was doing "The Sentinal", he had to redo the opening scene 5 times until he could figure out a way to get it to run fullspeed on a 68000 based machine. If you can't find his article in that old
Amazing Amiga magazine, write back and I will post the highlights.
