Revised 9-4-93. Recompiled with updated version of the compiler and
with further optimizations.

                    Notes for QRTPRO.EXE
==============================================================================

  This archive contains a port of QRT version 1.5 for use on IBM
compatible machines with *at least* an 80386(SX) CPU. The program will
use a math coprocessor if one is installed in the machine, if not
a protected mode '387 emulator will be loaded and used. The program 
*may* execute in a machine with 2 megs of RAM although 4 is better.
The program POVMOD included in the archive of POV-Ray 1.0 or 2.0 may 
be used to change the amount of disk space the virtual memory manager will
use. (POVMOD.EXE is in the POVIBM.ZIP file in the POVSOURCES library
of the Graphics Developers Forum (GO GRAPHDEV) on CompuServe) The 
region size is currently set to 2048K in this EXE which should be 
enough for QRT. See the doc file with POVMOD (POVMOD.DOC) for further 
information. 

For further documentation on QRT download the file QRT15E.ZIP from 
the raytrace libs in GRAPHDEV on CompuServe. That file contains Doc's 
as well as a Turbo C 2.0 real mode compile of the program that will run 
on any IBM compatible machine. (No use duplicating Doc files in several 
files, the real mode executable program is quite a bit smaller than 
this one, a good part of the file size of that ZIP is Docs.) This compile 
runs approximatly 40% faster than the real mode version in QRT15E.ZIP
however. It will also report the time required to trace the image, in
seconds, in the statistics report at the end of the run.

For a quick starter the syntax to run one of the example files 
included here (from the command line prompt) is:

QRTPRO < MIRRORS.QRT

This will generate a 24 bit TARGA file called MIRROR.TGA. 

=========================================================================

If you get a message about a conflicting protected mode environment
being detected, reboot your machine with *no TSR's or memory management*
programs. QRTPRO should now run with most *current versions* of memory 
managers on the market installed. Some VCPI applications, however, are
still incompatible. This version will run under OS/2 2.x as a background
task. DPMI_MEMORY_LIMIT (under DOS SETTINGS) must be set for 2+ Megs.
    To run stand-alone under Windows 3.x your machine *MUST* have a 
coprocessor installed. If your machine does not have a coprocessor
installed you must copy the VEMD.386 file to your Windows subdirectory
and add the following line to your SYSTEM.INI file in the [386enh]
section:

device=<path>\VEMD.386

Where <path> is the DRIVE and PATH to the directory that contains VEMD.386.
Case is not significant.
=========================================================================

   This version of QRT writes a TARGA type 2 (uncompressed) file
*ONLY*. It also assumes the video display is EGA or VGA for text
output, although any should work. You may end up with wierd
attributes on a mono display. Various programs can be used to
convert the output to an S-VGA viewable file. Lee Crocker's program
"PICLAB", available in the Graphics Support Forum on Compuserve, will
do an excellent conversion to a GIF file which can then be viewed
with any GIF viewing program. The image can be edited and/or
converted with a commercial paint program such as ColoRix. 


See READ_ME.TXT for information on QRT's author and the program.

 
Have Fun! 

Bill Pulver, 9/4/93
CIS EMAIL: 70405,1152
InterNet : 70405.1152@compuserve.com   
 
