Path: utzoo!utgpu!water!watmath!clyde!rutgers!uwvax!uwmacc!uwmcsd1!marque!gryphon!pnet02!rleyden
From: rleyden@pnet02.cts.com (Rich Leyden)
Newsgroups: comp.sys.amiga
Subject: DBW_RENDER 2.0
Message-ID: <2543@gryphon.CTS.COM>
Date: 10 Dec 87 16:30:30 GMT
Sender: root@gryphon.CTS.COM
Organization: People-Net [pnet02], Redondo Beach, CA
Lines: 17


   I've been puzzling over a few features of DBW_Render 2.0, ray tracing
program.  Unlike Render 1.0, this version allows any size image up to 1024
x1024.  However, as far as I can tell, the display routine always uses a
312x400 screen.  So, for example, a 350x400 image will nicely be displayed
using the overscan region of the monitor screen but a 624x400 image will
only have the center most portion of the image visible.  If this file is
loaded into some other program capable of displaying a 640x400 HAM image,
Digi-View is handy, only the right half of the scene is shown.  This seemed
a little strange to me so I looked at the IFF file header.  It shows  the
width 612 and the height 400 (02700190 hexadecimal) for both the image and
the page.  Is there something else which defines how an image is displayed?
   I liked DBW_Render, both versions a lot.  But the manual for 2.0 seems a
little crytic.  Its really not a manual at all but a glossy of terms with
line numbers to serve as the "key" for their key word copy protection
scheme.  For example, there is no discussion that I could find of the "mode"
setting.