From cdshaw@umbilicus.artsci.washington.edu Fri May 22 15:18:21 1998 Received: from burdell.cc.gatech.edu (root@burdell.cc.gatech.edu [130.207.3.207]) by lennon.cc.gatech.edu (8.8.4/8.6.9) with ESMTP id PAA05093 for ; Fri, 22 May 1998 15:18:19 -0400 (EDT) Received: from wheaten.hitl.washington.edu ([128.95.73.60]) by burdell.cc.gatech.edu (8.8.4/8.6.9) with ESMTP id PAA02756 for ; Fri, 22 May 1998 15:18:17 -0400 (EDT) Received: from umbilicus.artsci.washington.edu (umbilicus.artsci.washington.edu [128.95.248.206]) by wheaten.hitl.washington.edu (8.8.8/8.6.12) with SMTP id MAA09610 for <3d-ui@hitl.washington.edu>; Fri, 22 May 1998 12:17:46 -0700 (PDT) Received: (from cdshaw@localhost) by umbilicus.artsci.washington.edu (950413.SGI.8.6.12/8.6.10) id MAA14888; Fri, 22 May 1998 12:17:41 -0700 From: Chris Shaw Message-Id: <199805221917.MAA14888@umbilicus.artsci.washington.edu> Subject: Re: Osmose To: mconway@microsoft.com (Matt Conway) Date: Fri, 22 May 1998 12:17:41 -0700 (PDT) Cc: jpierce@cs.cmu.edu, 3d-ui@hitl.washington.edu In-Reply-To: <4FD6422BE942D111908D00805F3158DF05B2672D@red-msg-52.dns.microsoft.com> from "Matt Conway" at May 22, 98 12:03:05 pm Reply-To: cdshaw@cs.URegina.ca X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Status: RO > also known as a "dissolve" when you do it with film. The question isn't visual language, it's the details of implementation. During a typically dissolve, you double the amount of scene content and somehow manage your fog to do the cross-fade. The problems are that you have to load the target scene quickly, not overload texture ram, keep the update rate good, etc etc. Typically the scene is planned for decent update rate within a particular scene, which usually means that the transitions double the amount of stuff being drawn. Some of the Banff projects bypassed this difficulty by inserting a simple cross-fade scene, like a dark tunnel or something. Others just simply paused during loading. The pause turns out to be better than an instant transition. It prepares the viewer for the new world. -- Chris Shaw University of Regina cdshaw@cs.URegina.ca Assistant Professor http://www.cs.uregina.ca/~cdshaw