ofer@gandalf.Berkeley.EDU (Ofer Licht) (04/26/89)
In article <8904242330.AA20426@fenris.idt.unit.no> bjornmu@idt.unit.no writes: >BTW, has anyone tried to compile DBW_Render (I'm talking about the >modified version by Ofer Licht) with Lattice 5.02 and run it on a >68020? Several people have asked me for the executables to dbw with many interested in in-line FP. If you have compiled dbw with lattice or manx with 68881 code, please put a zoo of the executable by anonymous ftp to bach.berkeley.edu in the directory /pub/incoming. I would like to reiterate in public some things I have mentioned to a couple of people about dbw. My modifications to dbw fall into 2 categories. 1. changes in the internal representation and outputting of scanlines. The original code used ints but bit twiddled them as if they were 16bits long. This was for the normal 16bit manx libraries. To make dbw behave "normally" -- while still perserving output that would be readable by the ray2 postproccessor, I changed many integer structures to shorts. This is the minimal needed to make dbw work on un*x boxes. 2. adding the capability for dbw to read scanline ranges on the commandline. This was done to facilitate distributed processing with the "distpro" module. As you can see, my mods were minimal. I think most people are happy about being able to run dbw on their office workstations. Some people, however, would like to see dbw recompiled to run on an '020 amiga with an '881. To those people I say "go fiddle with your compilers and hack the code some more." (if you do manage this, please send me a copy for distribution purposes--see above). To people who are "serious" about ray tracing I say "find yourself a LAN of MFLOP workstations and go distributing." To the people who only have their original amigas with no add ons I say "I'm sorry. you will probably be wasting your time trying to do good ray tracing on your machines. It just takes too long!" (to the eyes I say "why couldn't the distribution of photoreceptors in the fovia be simpler to simulate?") -Ofer Licht ofer@gandalf.berkeley.edu